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T / S Patent Date Description Patentee Category Assigned To
 1863
U 38,820 June 9, 1863 Improvement in Caps for Fruit Jars
Wrench lug sheetmetal fruit jar cap
GRAY, Ralph
HEMINGRAY, Robert
HI  
 1888
U 391,512 October 23, 1888 Electric Switch
Wooden switch (Brown p. 21)
CLEVELAND, William B.
Wood  
 1931
U 1,815,598 July 21, 1931 Insulating Member for High Tension Construction
Wooden shaft with metal fittings to insulate guy wires on high voltage transmission poles
STROUP, Charles L.
Wood  
 1885
U 328,929 October 27, 1885 Electric Wire Insulator and Supporter
Wooden self-tying cleat
FAWCETT, William N.
HUNTLEY, George F.
Wood  
 1929
U 1,738,875 December 10, 1929 Insulator Pin
Wooden pin strengthened with a metal collar
DUFFY, Ralph E.
Pin  
 1886
U 348,792 September 7, 1886 Electric Tramway System
Wooden insulators for third rail and other various designs for electric tramway
SMITH, Michael Holroyd
Wood/third Rail  
 1880
U 228,077 May 25, 1880 Telegraphic and Telephonic Insulator
Wooden insulator with paper thimble and covering
JOBBINS, William F.
Wood  
 1890
U 443,174 December 23, 1890 Insulator
Wooden insulator used in a trolley wire hanger
EMMET, William Le Roy
Wood  
 1886
U 346,475 August 3, 1886 Insulator Block for Electric Conductors
Wooden insulator mounted on wire to prevent wire touching other
HAWKEN, Thomas
Wood  
 1872
U Specimen known 122,961 January 23, 1872 Improvement in Telegraph Insulators
Wooden insulator coated with tar with metal cap
POND, Chester H.
Wood  
 1884
U 306,718 October 21, 1884 Insulator
Wooden block with wire projections for holding wire
CLARK, Eduard
Wood  
U 306,719 October 21, 1884 Insulator
Wooden block with wire projections for holding wire
CLARK, Eduard
Wood  
 1932
U 1,848,501 March 8, 1932 Caster Base
Wood, cork, and felt support for piano legs
STEVENS, Charles Whitney
Piano  
 1890
U 426,203 April 22, 1890 Insulator
Wood tree insulator with line wire running through the center of a rod of wood
MUNSIE, James F.
Wood Thomas L. Coles
 1906
U Specimen known 822,642 June 5, 1906 Wood Strain Insulator
Wood strain insulator with metal caps on the ends
WHITE, Thomas C.
Strain  
 1908
U 882,979 March 24, 1908 Strain Insulator
Wood strain insulator with metal caps on each end and special eye to receive a hook
TERRY, William C.
Strain The MacAllen Co.
 1911
U 1,010,077 November 28, 1911 Strain Insulator
Wood strain insulator with metal caps and eyelet on one end
SCHAAKE, William
Strain Westinghouse Electric & Mfg. Co.
 1930
U 1,764,434 June 17, 1930 Insulator
Wood strain insulator with coating such as rubber over the metal ends and extending only a short distance to prevent burning the insulator from corona
COCHRAN, Paul B.
Strain Westinghouse Electric & Mfg. Co.
 1932
D 86,659 April 5, 1932 Design for a Bottle or Similar Article
Wishing well refrigerator bottle
BILBY, Ernest E.
HI Hemingray Glass Co.
 1913
D 44,117 May 27, 1913 Design for a Wiring Cleat
Wiring cleat
WATERMAN, Charles H.
Cleat  
 1912
U 1,014,720 January 16, 1912 Wiring Block
Wiring block for main circuit wires that provides for connection for branch circuits
PEREYRA, Eugene S.
Wiring Block  
 1942
U 2,292,948 August 11, 1942 Insulator and the Like
Wireholder with slot for attaching lag screw
KENDALL, Earl H.
Wireholder  
 1940
U 2,219,727 October 29, 1940 Insulator Structure
Wireholder with multiple grooves and lag screw
STEWART, Lory B.
Wireholder 1/3 to Karl Thielscher
 1941
U 2,237,717 April 8, 1941 Insulator Structure
Wireholder with multiple grooves and lag screw
STEWART, Lory B.
STEWART, Alvin J.
Wireholder 1/3 to Karl Thielscher
 1939
U Specimen known 2,174,723 October 3, 1939 Insulator
Wireholder with metal loop, base & lag screw
HOCHER, Andrew A.
Wireholder Hubbard & Co.
 1936
U 2,050,898 August 11, 1936 Electrical Insulator
Wireholder with large hole and lag screw
SELLYE, Howard P.
Wireholder  
 1928
U 1,674,905 June 26, 1928 Insulator
Wireholder with lag screw embedded in eye-shaped insulator
KYLE, William D.
HENDEE, Lem E.
Wireholder Line Material Co.
 1926
U 1,594,207 July 27, 1926 Insulator
Wireholder with lag screw and ring
KYLE, William D.
Wireholder Line Material Co.
 1927
U 1,613,464 January 4, 1927 Reinforced Insulator
Wireholder with lag screw and or U-shaped metal bracket
KYLE, William D.
Wireholder Line Material Co.
 1924
U 1,505,730 August 19, 1924 Insulator and Support Therefor
Wireholder with lag screw and metal bracket
ROCKWELL, Herbert O.
Wireholder Brady Electric & Mfg. Co.
 1925
U 1,527,346 February 24, 1925 Flexible Insulator
Wireholder with lag screw and metal bracket
BRADY, William P.
Wireholder Brady Electric & Mfg. Co.
 1928
U 1,663,011 March 20, 1928 Line Conductor Insulator
Wireholder with lag screw and bolt attachment
KYLE, William D.
Wireholder Line Material Co.
 1941
U 2,259,526 October 21, 1941 Insulator
Wireholder with lag screw (see reissue 22,269 on 4-11-1944)
LEMONT, Clarence J.
Wireholder Line Material Co.
 1944
R 22,469 April 11, 1944 Insulator
Wireholder with lag screw (reissue of 2,259,526)
LEMONT, Clarence J.
Wireholder Line Material Co.
 1927
U 1,651,704 December 6, 1927 Line Insulator
Wireholder with lag screw
HENDEE, Lem E.
Wireholder Line Material Co.
 1929
U Specimen known 1,709,477 April 16, 1929 Insulator
Wireholder with lag screw
KYLE, William D.
Wireholder Line Material Co.
U 1,736,044 November 19, 1929 Screw Insulator
Wireholder with lag screw
KYLE, William D.
Wireholder Line Material Co.
 1930
U 1,779,501 October 28, 1930 Insulator
Wireholder with lag screw
STEINMAYER, Alwin G.
Wireholder Line Material Co.
 1931
U 1,838,319 December 29, 1931 Insulator
Wireholder with lag screw
MILLER, Charles E.
Wireholder  
 1933
U 1,914,437 June 20, 1933 Insulator
Wireholder with lag screw
KYLE, William D.
Wireholder Line Material Co.
 1937
U 2,099,098 November 16, 1937 Bracket for Electrical Wires
Wireholder with lag screw
BINKLEY, William J.
Wireholder James R. Kearney Corp.
 1938
U 2,139,332 December 6, 1938 Wire Holder
Wireholder with lag screw
PITTMAN, Ralph R.
WALSH, Carroll H.
Wireholder  
U 2,139,333 December 6, 1938 Sealed Screw Wire Holder
Wireholder with lag screw
PITTMAN, Ralph R.
WALSH, Carroll H.
Wireholder  
 1939
U 2,155,189 April 18, 1939 Electrical Wire Bracket
Wireholder with lag screw
HEINRICH, Walter A.
Wireholder James R. Kearney Corp.
 1940
U 2,191,171 February 20, 1940 Insulator
Wireholder with lag screw
LEE, Leffman H.
GUTHRIE, James M.
Wireholder Line Material Co.
U 2,218,004 October 15, 1940 Porcelain Insulator Screw Bracket
Wireholder with lag screw
LEMONT, Clarence J.
Wireholder Line Material Co.
U 2,224,361 December 10, 1940 Insulator
Wireholder with lag screw
SEELYE, Howard P.
Wireholder  
 1941
U Specimen known 2,228,196 January 7, 1941 Insulator
Wireholder with lag screw
BOCH, Oscar A.
Wireholder  
 1942
U 2,269,409 January 6, 1942 Wire Holder
Wireholder with lag screw
MCCHESNEY, JR., Samuel Waldrop
Wireholder Porcelain Products, Inc.
U 2,286,496 June 16, 1942 Wire Holder
Wireholder with lag screw
MEYER, Edwin M.
Wireholder Porcelain Products, Inc.
 1931
U 1,790,273 January 27, 1931 Insulator
Wireholder with internal threaded metal core to receive a threaded shank that can be fixed to a wall
LEE, Leffman H.
Wireholder  
 1929
U 1,706,237 March 19, 1929 Secondary Rack
Wireholder with hole near the bottom for attaching to a metal rack and hole near the top for securing the drop wire.
KYLE, William D.
Wireholder Line Material Co.
 1937
U 2,081,832 May 25, 1937 Insulator
Wireholder with hole and lag screw
MORGENSTERN, Joseph
BRASTY, Joseph
Wireholder  
 1929
U 1,709,555 April 16, 1929 Insulator Support
Wireholder with bracket designed to be cemented between bricks
BLACKBURN, Jasper
ALBRECHT, Arthur A.
PEELE, Hereward J.
Wireholder Jasper Blackburn
 1934
U 1,960,171 May 22, 1934 Line Holder for Electric Wires
Wireholder that allows tie-off without the use of tie wires by means of a hole in the insulator and slotted top and crown grooves
SEEGER, Adolph M.
Wireholder  
 1930
U 1,749,915 March 11, 1930 Insulator Rack
Wireholder mounted on a rack
KYLE, William D.
Wireholder Line Material Co.
 1909
U 930,527 August 10, 1909 Automatically Adjustable Strain Insulator House Fixture
Wireholder for strain service and attached to a house for a drop wire
BURGE, Charles S.
Wireholder  
 1910
U Specimen known 964,737 July 19, 1910 Insulated Distributor for Electric Service Wires
Wireholder for multiple drop wires suspended under the crossarm
ASHLEY, John B.
Wireholder  
 1932
U 1,858,045 May 10, 1932 Wire Support
Wireholder for duplex street lighting conductor running down poles
HENDEE, Lem E.
Wireholder Line Material Co
 1908
U 889,884 June 2, 1908 Insulator
Wireholder comprising two spools and metal holder
STRONG, M. Harrison
Wireholder 1/2 to Solomon E. Bronson
 1939
U 2,150,995 March 21, 1939 Wire Bracket
Wireholder bracket with lag screw that allows bracket and insulator movement.
TALLMAN, Oscar F.
Bracket/wireholder James R. Kearney Corp.
 1951
U 2,571,495 October 16, 1951 Adjustable Insulator Bracket
Wireholder bracket for secondary rack insulators that also functions to aid in stringing the wire without damage to the bracket.
STEINMAYER, Alwin G.
Wireholder/bracket/rack Spool McGraw Electric Co.
 1953
U 2,650,263 August 25, 1953 Bracket Construction
Wireholder bracket for secondary rack insulators that also functions to aid in stringing the wire without damage to the bracket.
STEINMAYER, Alwin G.
Wireholder/bracket/rack Spool McGraw Electric Co.
 1956
U 2,740,827 April 3, 1956 Insulator Bracket
Wireholder bracket for secondary rack insulators that also functions to aid in stringing the wire without damage to the bracket.
SMALLEY, Burton M.
Wireholder/bracket/rack Spool Joslyn Mfg. & Supply Co.
 1932
U 1,866,104 July 5, 1932 Insulator Bracket
Wireholder bracket for rack spools
HEIM, Warren M.
Bracket Oliver Iron & Steel Corp.
 1891
U 465,961 December 29, 1891 Insulator
Wireholder (G.S.A.) (see Electrical Engineer 1-20-1892)
ALBANESE, Giuseppe Sacco
Wireholder  
 1897
U 587,614 August 3, 1897 Electric Wire Holder
Wireholder
STRAM, Charlie J.
Wireholder  
 1929
U 1,720,181 July 9, 1929 Insulator
Wireholder
KYLE, William D.
Wireholder Line Material Co.
 1934
U 1,954,592 April 10, 1934 Wire Support
Wireholder
KLINGEL, Edward L.
Wireholder  
 1868
U 75,492 March 10, 1868 Improvement in Telegraph Poles
Wire wrapped pole and crossarms to carry leaking electricity to ground
VARLEY, Cromwell F.
Wire  
 1903
U 746,469 December 8, 1903 Electrical Wire Support
Wire support of cylindrical shape & metal support bolt to underhang wire
CULLEN, Beauregard
Wire  
 1895
U 544,959 August 20, 1895 Insulator
Wire sheath fit in insulator groove
COLLINS, Reuben G.
FOLEY, Frank W.
Wire  
 1916
U Specimen known 1,169,246 January 25, 1916 Insulator
Wire hanger [only 5 known]
FOLSTAD, Almer J.
Wire  
 1891
U 463,756 November 24, 1891 Wire Hanger
Wire hanger using two spool insulators in a bracket to secure the line wire
JACOBS, Charles A.
Hanger  
 1916
U 1,193,521 August 8, 1916 Wire Hanger
Wire hanger for catenary suspension of trolley wires
CUNNINGHAM, Edward Robert
Wire Hanger  
 1909
U 927,321 July 6, 1909 Insulator
Wire grooves undercut to hold wire
BOND, John T.
Wire  
 1885
U 319,447 June 9, 1885 Insulator
Wire groove projections through metal cover to contact wire
BROOMHALL, George L.
Wire  
 1910
U 954,350 April 5, 1910 Insulator
Wire groove on top with enlarged crown to aid in tying (see 1,229,272)
SILER, Andrew J.
Wire 1/3 to Aaron Siler & 1/3 to Sumner Siler
 1908
U 887,107 May 12, 1908 Wire Fastener for Insulators
Wire fastener for crown wire groove of insulator
LOCKE, Fred M.
Wire  
 1905
U 794,645 July 11, 1905 Insulator Bracket for Telephone Poles, etc.
Wire device to secure a side pin to a pole
SPRINGEN, Knudt G.
Pin  
 1956
U 2,768,556 October 30, 1956 Control of Daylighting
Window design uitilizing glass blocks
BOYD, Robert A.
OI Owens-Illinois Glass Co.
 1957
U 2,812,692 November 12, 1957 Control of Daylighting
Window design uitilizing glass blocks
BOYD, Robert A.
OI Owens-Illinois Glass Co.
 1933
U 1,925,058 August 29, 1933 Process for Forming Plastic Clay Masses
Wet process clay reflocculation method to eliminate pugging process
ROWLAND, Davidge H.
WETZEL, Kurt
Wet Process Locke Insulator Corp.
 1964
U 3,127,278 March 31, 1964 Low-Melting Glass Sealant and Article Made Therefrom
Welding of glass block and TV Tube parts
FRANCEL, Josef
HAGEDORN, Erwin C.
OI Owens-Illinois Glass Co.
 1884
U 296,485 April 8, 1884 Means for Supporting and Insulating Electrical Wires
Wedge block for side of pole or driven in hole in crossarm
TRINGHAM, John Watson
Wedge  
 1918
D 52,341 August 27, 1918 Design for a Weather Vane or Lightning Rod Ornament
Weathervane with an ear of corn attached
MOHRMANN, Paul
Weathervane Friedley-Voshardt Co.
D 52,361 August 27, 1918 Design for a Weather Vane or Lightning Rod Ornament
Weathervane with a witch and crescent moon attached
MOHRMANN, Paul
Weathervane Friedley-Voshardt Co.
D 52,339 August 27, 1918 Design for a Weather Vane or Lightning Rod Ornament
Weathervane with a winged wheel attached
MOHRMANN, Paul
Weathervane Friedley-Voshardt Co.
D 52,340 August 27, 1918 Design for a Weather Vane or Lightning Rod Ornament
Weathervane with a stork bird attached
MOHRMANN, Paul
Weathervane Friedley-Voshardt Co.
 1931
D 85,082 September 15, 1931 Design for a Bottle or Similar Article
Waterfall refrigerator bottle
BILBY, Ernest E.
HI Hemingray Glass Co.
 1884
U 298,593 May 13, 1884 Insulator
Washer around pin in pinhole
LEWIS, Joseph Slater
Washer 1/2 to William P. Thompson
 1900
U Specimen known 651,680 June 12, 1900 Electric Battery Attachment
Ware battery rest
WARE, Henry Bowles
CORNELL, Chauncey Cortez
Battery  
 1915
U 1,158,105 October 26, 1915 Insulating Tube
Wall tube with wedge projections (made by Illinois Electric Porcelain Co.)
CALLENDER, Edwin F.
Wall Tube 1/2 to Belle Callender
 1916
U 1,206,882 December 5, 1916 Insulating Tube
Wall tube with wedge projections
MORENE, Carl T.
Wall Tube  
 1907
U 870,187 November 5, 1907 Wall Insulator
Wall tube with skirts
LOCKE, Fred M.
Wall Tube  
 1904
U 773,733 November 1, 1904 Insulator
Wall tube with ribs and metal clip
GREENE, Leon W.
Wall Tube  
 1916
U 1,171,267 February 8, 1916 Insulator for Electrically Charged Wires
Wall tube with metal gripping strip
SMITH, George R.
Wall Tube  
 1913
U 1,080,257 December 2, 1913 Insulator
Wall tube with metal clip
BRUCHSALER, Karl
Wall Tube  
 1894
U 517,591 April 3, 1894 Insulating Tube
Wall tube with longitudinal fin ribs
ROBINSON, Miner
Wall Tube  
U 522,428 July 3, 1894 Insulator
Wall tube secured with a clip
MACE, Romaine
Wall Tube The Interior Conduit & Insulation Co.
 1898
U 615,896 December 13, 1898 Vacuum Insulator for Electric Conductors
Wall tube sealed in vacuum and protected from weather (see 608,906)
POCHE, Joseph Arthur
Wall Tube  
 1892
U Specimen known 476,964 June 14, 1892 Insulating Tube for Electric Conductors
Wall tube Patent was owned by Pass & Seymour.
SEYMOUR, Albert P.
Wall Tube  
 1898
U 607,315 July 12, 1898 Insulator
Wall tube of two split pieces [Scientific American 8-6-1898]
WINGARD, Charles L.
Wall Tube 1/2 to Luella Wingard
 1908
U 878,646 February 11, 1908 High Potential Insulator
Wall through bushing with multitude of petticoats
LOCKE, Fred M.
Wall Tube  
 1924
U 1,491,385 April 22, 1924 Insulator
Wall or roof bushing to bring conductor into the building
FACCILOI, Giuseppe
Miscellaneous General Electric Co.
 1934
U 1,949,898 March 6, 1934 Building Block
Various forms of glass window block
COCHRANE, Samuel S.
KADOW, August
OI Owens-Illinois Glass Co.
 1926
U 1,589,617 June 22, 1926 Process for Preparing Material for Ceramic Articles
Vacuum pugging after mixing dry ingredients with exact percent water needed
AUSTIN, Arthur O.
Vacuum The Ohio Brass Co.
 1922
U Specimen known 1,424,924 August 8, 1922 Method of Producing Clay Bodies
Vacuum process for removing air from the clay. Patent was owned by Lapp Insulator Co.
LAPP, Grover W.
Vacuum  
 1925
U 1,561,002 November 10, 1925 Method of Producing Clay Bodies and Apparatus Used
Vacuum process for removing air from the clay
LAPP, Grover W.
Vacuum Lapp Insulator Co., Inc.
 1947
U 2,415,462 February 11, 1947 Ceramic Molding Press
Vacuum molding of clay articles such as insulators. This may be the patent used by Locke to make their ""vacuum dry pressing"" porcelain insulators.
CHERRY, George L.
VEALE, Charles C.
Press Western Electric Co.
 1898
U 608,906 August 9, 1898 Insulation of Electric Wires
Uses glass tube sealed from the weather to allow conductor to enter a building (see reissue 11,759))
POCHE, Joseph Arthur
Wall Tube  
 1899
R 11,759 July 11, 1899 Insulation of Electric Wires
Uses glass tube sealed from the weather to allow conductor to enter a building (see 608,906)
POCHE, Joseph Arthur
Wall Tube  
 1924
U 1,512,299 October 21, 1924 Temporary Binder for Ceramic Bodies
Use of wheat flour to act as an organic binder to aid in holding the shape of a ceramic material before it is fired
NAGLE, Josehp A.
Manufacturing Jeffery-Dewitt Co.
 1912
U 1,035,231 August 13, 1912 Insulator
Use of varnish residue to secure hold metal suspension parts to a porcelain hood or skirt
RANDOLPH, Leonard M.
Miscellaneous  
 1909
U 911,973 February 9, 1909 Insulating High-Voltage Transmission-Lines
Use of steel coil attached to insulator (instead of the conductor) to offer resistance to control lightning surge and protect the insulator
GODDARD, Walter T.
Lightning The Locke Insulator Mfg. Co.
 1871
U 114,911 May 16, 1871 Improvement in Galvanic Batteries
Use of paraffin or paraffinic oil to coat surface of battery acid to prevent evaporation
BROOKS, David
Battery  
 1908
U 875,902 January 7, 1908 Means for Insulating the Supports of Electric Conduits
Use of multiple caps made of paper, felt, etc. over the threads of a pin in order to make the insulator fit tight on the pin and provide additional insulation
EGNER, Carl Emil
Pin  
 1926
U 1,611,871 December 28, 1926 High Tension Installation
Use of flux control insulators and arcing horns on transmission lines
AUSTIN, Arthur O.
Transmission The Ohio Brass Co.
 1930
U 1,783,271 December 2, 1930 High Potential Installation
Use of flux control arcing horns (see 1,552,664) to control flashover on towers using strings of suspension disks (see 1,783,272)
AUSTIN, Arthur O.
Transmission The Ohio Brass Co.
 1914
U 1,116,303 November 3, 1914 Arc Extinguisher
Use of explosive to break the arcing around a multipart insulator (see 1,127,043)
LOCKE, Fred M.
Transmission  
 1915
U 1,127,043 February 2, 1915 Electric Arc Extinguisher
Use of explosive to break the arcing around a multipart insulator (see 1,116,303)
LOCKE, Fred M.
Transmission  
 1883
U 279,289 June 12, 1883 Telegraph and Telephone Line
Use of copper wire instead of iron and crossarms between poles to keep the wires separated
VALE, Theodore N.
Miscellaneous  
 1938
U 2,106,667 January 25, 1938 Mounting of Electric Insulators
Use of an elastic ring around pin to absorb tension and strain to prevent breaking insulator
THIRY, Leon
Pin  
 1869
U 98,270 December 28, 1869 Improvement in Machine for Grinding Glass Jars
Use of adjustable arms to grind the mouth of glass jars
KELLY, Alexander W.
SAMUEL, John B.
Jar  
 1964
U 3,118,967 January 21, 1964 Transposing Device
Unusual circular transposition insulator device
ROSENVOLD, Carl
Transposition Transadean Associates, Inc.
 1931
D 84,313 June 2, 1931 Design for a Bottle or Similar Article
Universal Home Bottle
ZIMMERMAN, Willard P.
HI Hemingray Glass Co.
 1925
U 1,528,580 March 3, 1925 Insulator Pin
Unique hollow steel pin with bottom halves that widen when the insulator is screwed down on the pin thus gripping the hole in the crossarm and securing the pin and allowing a tap wire to run from the line conductor down through the center of the pin
STAUB, Arthur J.
Pin  
 1875
U 165,535 July 13, 1875 Improvement in Underground Telegraph Lines
Underground cable insulated by wrapping with cotton, hemp, or jute and saturating it with paraffin.
BROOKS, David
Cable  
 1878
U 199,506 January 22, 1878 Improvement in Insulating Underground Telegraph Wires
Underground cable insulated by wrapping with cotton, hemp, or jute and saturating it with paraffin and inserting the wires in heated metal pipes flushed with air to remove moisture.
BROOKS, David
Cable  
 1928
U 1,694,415 December 11, 1928 Insulator
Under crossarm type (see 955,661)
GORDON, Chester S.
Under American Telephone & Telegraph Co.
 1910
U 955,661 April 19, 1910 Insulator
Under crossarm type (see 1,694,415)
MOORE, William Enoch
Under Crossarm  
 1889
U 401,343 April 16, 1889 Electric Wire Nail
U-shaped wire nail that is round at the top to protect the wooden covering over the wire. (see article 12125)
GILDEMEYER, Charles A.
Nail 1/2 to Madison Rush
 1904
U 771,334 October 4, 1904 Third Rail Insulator
U-shaped third rail insulator metal caps fitting over each part to support rails.
STEWART, JR., Samuel B.
Third Rail General Electric Co.
 1951
U Specimen known 2,540,608 February 6, 1951 Strain Insulator
U-shaped strain used to support the conductor from a fence post.
BUSSMANN, Aloysius B.
Strain  
 1913
U 1,054,690 March 4, 1913 Electric Wire Supporting Device
U-shaped block insulator fitted into slots in the crossarm to hold telegraph and telephone lines.
HICKS, Henry A.
Block  
 1901
D Specimen known 34,211 March 12, 1901 Design for an Insulating Support for Electric Conductors
U-966 (see 689,218)
STILLWELL, Lewis B.
Pin-type  
 1907
U Specimen known 852,730 May 7, 1907 Insulator
U-957, broad skirt extending to crossarm with small threaded porcelain thimble
LOCKE, Fred M.
Insulator  
 1897
U Specimen known 590,806 September 28, 1897 Insulator
U-937, eave trough above crossarm
LOCKE, Fred M.
Insulator  
 1934
U Specimen known 1,955,609 April 17, 1934 Insulator
U-856A fogbowl
ROWLAND, Davidge H.
Insulator Locke Insulator Corp.
 1937
U Specimen known 2,088,433 July 27, 1937 Fog and Dust Insulator
U-816 series
PLIMPTON, Bentley A.
Insulator Locke Insulator Corp.
U Specimen known 2,084,866 June 22, 1937 High Voltage Insulator
U-796 styles and CD 221 Hi-Top design
PLIMPTON, Bentley A.
Insulator Locke Insulator Corp.
 1908
U Specimen known 894,616 July 28, 1908 Insulator and Wire Clamp
U-401 and U-401A, insulator & wire clamp
FAY, John L.
Insulator  
 1901
U Specimen known 676,881 June 25, 1901 Self-Locking Insulator and Pin
U-376, U-376A, U-376B, U-376C, U-376D
ETHERIDGE, Harry
Insulator  
 1915
U Specimen known 1,140,050 May 18, 1915 Insulator
U-189 & U-189A, CD 175.5 The insulator was designed to support the power line to street lights. Only pieces of a specimen have been found. (see 1,101,802)
MANWARING, Robert A.
HESSEL, James T.
Insulator  
 1910
U Specimen known 971,785 October 4, 1910 Tree Insulator
U-187
PIERCE, Alfred L.
Insulator 1/2 to Spalding K. Long
 1917
U Specimen known 1,251,416 December 25, 1917 Insulator
U-186 (improved)
PURKEY, Benjamin S.
U-186  
 1914
U Specimen known 1,107,111 August 11, 1914 Insulator
U-186
PURKEY, Benjamin S.
Insulator  
 1908
U Specimen known 881,967 March 17, 1908 Electric Insulator
U-185
SLUSSER, Charles R.
Insulator  
 1909
U Specimen known 929,878 August 3, 1909 Insulator
U-183
RANSON, Joseph W.
Insulator  
 1903
U Specimen known 726,846 May 5, 1903 Insulator for Electric Wires
U-181 & CD 207 (sim) self-tying screw top (see 664,432)
BELL, Joseph R.
Insulator  
 1892
U Specimen known 476,813 June 14, 1892 Porcelain Insulator
U-141, pin type insulator with cemented metal thimble. Patent was owned by Pass & Seymour.
PASS, James
SEYMOUR, Albert P.
Insulator  
 1919
U Specimen known 1,305,168 May 27, 1919 Insulator
U-124A/B, U-182A/B self-tying screw top similar to Prenzel patent 315,660
ROBERTS, Omer L.
Insulator  
 1901
U Specimen known 669,691 March 12, 1901 Insulator for Electric Wires
Two-piece self-tying insulator (found on U-184)
HARLOE, Morton
Self-tying Miscellaneous 1/2 to Wilton S. Bloes
 1876
U 179,340 June 27, 1876 Improvement in Glass Bottle Molds
Two-part mold for making glass bottles. Jacob Pease later assigned three patents to Brookfield. (see patents 416,703; 419,875; 477,447)
PEASE, Jacob
TESTER, Abraham
Bottle Mold  
 1889
U 400,552 April 2, 1889 Telegraph Wire Carrier
Two spools mounted together to secure telegraph wire between them and mounted on a crossarm
DONALDSON, Robert S.
Spool  
 1942
U 2,278,330 March 31, 1942 Multipost Line Insulator
Two post insulators joined together with elongated metal bottom cap
MEYER, Edwin M.
Insulator Porcelain Products, Inc.
 1916
U 1,176,590 March 21, 1916 Protected Insulator
Two part round or ball-shaped insulator secured with a metal cover. The line wire is clamped between the two insulator parts and the metal protective cover holds the parts securely against the wire.
MOCK, John H.
Protective Shield  
 1930
U 1,760,786 May 27, 1930 Coupling for Insulators
Two part metal coupling to link Hewlett disks together
SLEEMAN, Harold P.
Suspension The R. Thomas & Sons Co.
 1910
U 945,350 January 4, 1910 Insulator
Two part insulator fitted in the underside of the crossarm.
TINSLEY, Addison B.
Under Crossarm  
 1964
U 3,148,047 September 8, 1964 Press-Molding Machine With Heat Flow Control
TV Faceplate molding machine
TOROK, Julius J.
OI Owens-Illinois Glass Co.
 1919
U 1,303,739 May 13, 1919 Lightning Rod
Tubular lightning rod with flat end that is folded around the conductor and secured with a screw
SWENSON, John S.
STEHLIK, Frank E.
Lightning Rod  
 1917
U 1,214,652 February 6, 1917 Lightning Rod Structure
Tubular lightning rod points with Y-shaped attachment to conductor by means of a sheet metal connector folded at various points during installation to secure the rod to the conductor
CURTI, John E.
Lightning Rod  
 1916
U 1,170,260 February 1, 1916 Lightning Rod
Tubular lightning rod points with Y-shaped attachment to conductor
HOOVENS, Amasa G.
Lightning Rod  
 1915
U 1,159,798 November 9, 1915 Insulating Tube
Tubes (insulating) made by winding long strips of paper (machine for making)
REYNDERS, Arthur B.
Wall Tube Westinghouse Electric & Mfg. Co.
 1899
U 637,282 November 21, 1899 Electric Insulator
Tube of asbestos to lead conductor through a wall is made water tight (see 608,906) (see 615,896)
POCHE, Joseph Arthur
Insulator  
 1909
U 912,364 February 16, 1909 Insulator for Electrically Charges Wires
Tube for routing wires through wood with spring clip attached to the outside of the tube to prevent the tube from slipping out.
CONRAD, Stonewall Jackson
Wall Tube  
 1898
D 28,743 May 31, 1898 Design for an Insulator Plate
Truncated triangular glass plate with three wiring knobs for arc lights
MCDONALD, William B.
Misc  
 1891
U 463,824 November 24, 1891 Trolley Wire Hanger
Trolley wire hanger with insulator with threads on inside and outside to screw into bell
BIRDSALL, Edward T.
SERRELL, Lemuel William
Hanger  
 1897
U 579,725 March 30, 1897 Insulator and Holder for Electric Railways
Trolley hanger insulator suspended from a cable. It is composed of an inverted insulator cup and a metal cover.
KEITHLY, Willie C.
Trolley Hanger  
 1916
U 1,185,700 June 6, 1916 Insulator for Trolley Wires
Trolley hanger insulator
MOSS, Benton C.
Trolley 1/2 to Charles Fritts
 1897
U 576,392 February 2, 1897 Insulator
Trolley hanger
BILLINGS, Harry E.
Trolley Hanger The Billings & Spencer Co.
 1883
U 271,733 February 6, 1883 Tripod Standard for Lightning Rods
Tripod stand for lightning rod with brackets to hold the rod
PATEE, Theodorus H.
RIDGE, Thomas D.
Lightning Rod Theodorus H. Patee
 1885
U 332,383 December 15, 1885 Lightning Rod Stand
Tripod stand for lightning rod with brackets to hold the rod
COLE, James W.
KNUDSEN, Henry
Lightning Rod James W. Cole
 1887
U 359,940 March 22, 1887 Lightning Rod Standard or Brace
Tripod stand for lightning rod with brackets to hold the rod
PATEE, Theodorus H.
LAWSHE, Thomas D.
Lightning Rod  
 1939
U 2,181,810 November 28, 1939 Glass Block Trimmer
Trimmer to remove excess bonding agent from glass blocks
HAWK, Charles E.
OI Owens-Illinois Glass Co.
 1871
U 121,368 November 28, 1871 Improvement in Telegraph Insulators
Triangular insulator to reduce surface contact of tie wire
HOLLEY, Minard Y.
Triangular  
 1918
U Specimen known 1,258,802 March 12, 1918 Insulator Support
Tree type - swinging type with bracket and roller on pin type insulator
MORGAN, Andrew J.
Tree  
 1908
U 887,578 May 12, 1908 Hanger for Electric Wires
Tree type - swinging
BEYER, David S.
Tree  
 1944
U 2,361,109 October 24, 1944 Insulating Protector for Conducting Wires
Tree insulator to protect the wire
KENNEALLY, Martin M.
Tree The Porcelain Insulator Corp.
 1917
U 1,230,521 June 19, 1917 Bracket
Tree insulator similar to the Cutter CD 1038 except with diagonal slot to secure wire, two holes for nails and two holes for tying to tree limbs
ROSS, George
Insulator  
 1903
U Specimen known 725,044 April 14, 1903 Insulator
Tree insulator composed of a ball of glass with embedded wire loops
CLAYDON, Charles
Tree  
 1889
U 413,146 October 15, 1889 Insulator
Tree insulator bracket holding wire with two spool type insulator
MCCARTHY, Louis
Tree Charles Lee & The Gould & Watson Co.
 1927
U Specimen known 1,620,804 March 15, 1927 Insulator
Tree insulator bracket for CD 1038 (see 1,721,657)
CUTTER, Scott C.
Insulator  
 1929
U Specimen known 1,721,657 July 23, 1929 Insulator
Tree insulator (porcelain) improved with ribs - strengthening (see 1,620,804)
CUTTER, Scott C.
Tree  
 1892
U 482,913 September 20, 1892 Insulator
Tree insulator
BROOKS, Herbert H.
Tree 1/2 to Augustus T. Clark
 1918
U 1,282,876 October 29, 1918 Line Conductor Support
Tree hanger with spool and lag screw
KYLE, William D.
Tree  
 1889
U Specimen known 403,491 May 14, 1889 Insulating Device for Line Wires
Tree hanger split octagon shaped forestry insulator referred to as the Victor
SMITH, Thomas J.
Tree The E. S. Greeley & Co.
 1932
U 1,882,486 October 11, 1932 Insulator
Tree hanger grips the wire like a hand
COLE, William H.
Tree  
 1910
U 951,505 March 8, 1910 Insulating Tube
Tree hanger comprised of split tube
MATHER, Thomas T.
Tree  
U 973,409 October 18, 1910 Insulated Hanger
Tree hanger comprised of cylinder with center groove
CRABBE, Edward
Tree  
 1926
U Specimen known 1,595,653 August 10, 1926 Tree Insulator
Tree hanger - self-tying twist lock with lag screw
GAMMON, Thomas E.
AVERILL, Henry D.
Tree 1/2 to Line Material Co.
 1891
U 444,879 January 20, 1891 Insulator
Tree hanger
ELKINS, Charles
Tree  
 1899
U Specimen known 626,065 May 30, 1899 Insulator
Tree hanger
HOLMES, Welles E.
Tree  
 1904
U 756,026 March 29, 1904 Insulator
Tree hanger
KINSLEY, William S.
BELL, Stewart S.
Tree  
 1905
U 802,096 October 17, 1905 Tree Insulator
Tree hanger
DUNTON, Charles W.
Tree 1/2 to Frank Field
 1916
U 1,176,629 March 21, 1916 Tree Insulator and Wire Supporter
Tree hanger
WALLACE, William H.
Tree  
 1943
U 2,331,041 October 5, 1943 Method of Surface Treating Glass Containers
Treatment of interior surfaces of glass block
NOBLE, Burton A.
OI Owens-Illinois Glass Co.
 1925
U 1,556,570 October 6, 1925 Impregnated Wood and Process of Treating Wood
Treating wood pins and the like under high temperature with Montan wax and a solvent that penetrates the grain and protects it from weather and decay
COOLIDGE, Joseph R.
Pin Montan, Inc.
 1883
U Specimen known 289,449 December 4, 1883 Insulator
Transposition style but not intended for transposition (CD 199 & U-197)
ROUSSEAU, Necter
Insulator 1/2 to James W. Brennan
 1930
U 1,761,046 June 3, 1930 Transposition Device
Transposition ring for radio line
PFAUTZ, Christian E.
Transposition RCA
 1948
U 2,455,227 November 30, 1948 Wire Transposing Device
Transposition midspan bracket, 2 rotatable CD 1049 spools
CASE, Rogers
Transposition Transadean Associates, Inc.
 1889
U 402,810 May 7, 1889 Supporting and Cross-Connecting Electric Wires
Transposition method using double crossarms with long and short pins
DENVER, William J.
Transposition  
 1903
U 731,239 June 16, 1903 Telephone Circuit
Transposition metal connector for forming loops in line wire
SORG, Frederich W.
Transposition  
 1924
U 1,492,496 April 29, 1924 Insulator and Transposition Device
Transposition insulator with internal channels to transpose the wires
VERNOR, Thomas A.
Transposition  
 1941
U 2,248,044 July 8, 1941 Transposition Insulator
Transposition insulator with channels for two line wires to cross over within the insulator
DEHMEL, Richard C.
Transposition Bell Telephone Laboratories, Inc.
 1894
U Specimen known 520,367 May 22, 1894 Insulator
Transposition insulator CD 204 & U-192A
LOCKE, Fred M.
Insulator 1/2 to G. Paddock & W. Page
 1938
U 2,138,571 November 29, 1938 Insulator
Transposition for telephone line
DEHMEL, Richard C.
Transposition Bell Telephone Laboratories, Inc.
 1936
U 2,043,754 June 9, 1936 Transposition Insulator
Transposition for radio line
JOHNSON, Edgar F.
Transposition  
 1938
U 2,135,344 November 1, 1938 Transposed Lead-In
Transposition for radio line
JOHNSTON, Fred E.
Transposition Crosley Radio Corp.
 1944
U 2,356,750 August 29, 1944 Wire Transposing Device
Transposition bracket using spools for carrier telephone circuits
CASE, Rogers
Transposition  
 1946
U 2,406,663 August 27, 1946 Wire Transposing Device
Transposition bracket using spools for carrier telephone circuits
CASE, Rogers
Transposition  
 1948
U 2,436,789 March 2, 1948 Wire Transposing Device
Transposition bracket using spools for carrier telephone circuits
CASE, Rogers
Transposition  
U Specimen known 2,437,593 March 9, 1948 Reinforced Wire-Contacting Insulator Assembly
Transposition bracket using spool insulators
CASE, Rogers
Transposition  
 1953
U 2,634,313 April 7, 1953 Line Wire Transposition Bracket
Transposition bracket pressed out of a square of steel to hold four insulators
RIDGERS, Frederick G.
Transposition N. Slater Co. LTD
 1946
U 2,394,575 February 12, 1946 Transposition Bracket
Transposition bracket holding one insulator above the crossarm and one below
WHEELER, Herbert H.
Transposition Western Union Telegraph Co.
 1948
U Specimen known 2,455,229 November 30, 1948 Transposition Bracket
Transposition bracket for fixed mounting on support
CASE, Rogers
Transposition Transadean Associates, Inc.
 1953
U Specimen known 2,655,553 October 13, 1953 Line Transposition Bracket with Reinforcing Gussets
Transposition bracket (see 2,455,228)
CASE, Rogers
Transposition  
 1902
U 710,206 September 30, 1902 Apparatus for Transposing Electric Circuit Wires so as to Equalize Induction
Transposition bracket
O'BRIEN, James
MATTIMORE, John
Transposition  
 1908
U 902,455 October 27, 1908 Transposition Bracket for Insulators
Transposition bracket
SKINNER, James E.
Transposition  
 1942
U Specimen known 2,299,960 October 27, 1942 Bracket and Method of Transposing Wires
Transposition bracket
BREWSTER, Truman P.
MCKAHAN, Alexander C.
Transposition  
 1955
U 2,717,274 September 6, 1955 Transposition Bracket
Transposition bracket
CASE, Rogers
Transposition Transadean Associates, Inc.
 1956
U 2,747,010 May 22, 1956 Transposition Bracket
Transposition bracket
MILNE, Winford G.
RIDGERS, Frederick G.
Transposition N. Slater Co., LTD
U 2,757,224 July 31, 1956 Transposition Bracket
Transposition bracket
MILNE, Winford G.
RIDGERS, Frederick G.
Transposition N. Slater Co., LTD
 1940
U Specimen known 2,195,986 April 2, 1940 Transmission Line Transposition
Transposition block (flat) for short wave radio antenna made of Faradite
GODDARD, DeWitt Rugg
Transposition Radio Corporation of America
 1942
U Specimen known 2,305,688 December 22, 1942 Transposition Block
Transposition block (flat) for short wave radio antenna
GODDARD, DeWitt Rugg
Transposition Radio Corporation of America
 1958
U 2,862,990 December 2, 1958 Combination Point and Span Transposition Bracket
Transposition and span bracket for carrier circuits
CASE, JR., Rogers
Transposition  
 1948
U Specimen known 2,455,228 November 30, 1948 Transposition Bracket
Transposition 4-spool bracket (see 2,455,229 and 2,655,553)
CASE, Rogers
Transposition Transadean Associates, Inc.
 1928
U Specimen known 1,687,495 October 16, 1928 Insulator
Transposition (1-piece) for telephone line shaped like CD 194.5, CD 195.5
GORDON, Chester S.
LOWE, James T.
Insulator American Telephone & Telegraph Co.
 1849
U 6,907 November 27, 1849 Improvement in Glazing Pottery-Ware
Transparent and colored glaze for pottery and stone ware
FENTON, Christopher W.
Flint  
 1882
T No text available 9,720 October 10, 1882 Trademark
Trademark of barrel shaped tobacco jar
HU  
 1931
T No text available 285,930 May 26, 1931 Trademark
Trademark for HB Trademark (serial 312,912)
 
HI  
 1910
T No text available 78,096 May 31, 1910 Trademark
Trademark for ""HEMINGRAY""
 
HI  
 1903
T No text available 39,727 February 3, 1903 Trademark
Trademark for ""GLOBE""
 
HI  
 1961
U 2,972,783 February 28, 1961 Method for Fabricating Glass Block Panels
Toplite skylight glass block panels
RUSSELL, Richard G.
THEISEN, Jean P.
STARK, Charles H.
KI Kimble Glass Co.
 1901
D 34,450 April 30, 1901 Design for an Insulator
Top skirt for U-675
LOCKE, Fred M.
Pin-type  
 1928
U 1,689,073 October 23, 1928 Indenting Tool
Tool used to roll across the surface of a clay insulatot to form indentions or a rough surface to produce a better griping surface for cement.
HARVEY, William F.
Tool  
 1940
U 2,207,342 July 9, 1940 Glass Building Block Manufacture
Tool to align glass block halves
EASTUS, Harold L.
OI Owens-Illinois Glass Co.
 1887
U 373,393 November 15, 1887 Tool for Cutting Seats for Insulator Attachments for Musical Instruments
Tool for cutting circular slot in piano legs in order to insert the piano insulator.
DEWING, James
BENNETT, Delbert F.
Piano Insulator  
 1909
U 914,837 March 9, 1909 Line Support
Tie wires wrapped around the neck of the insulator and clamped to the conductor on each end.
HILLIARD, John D.
Tie Wire  
 1905
U 802,015 October 17, 1905 Device for Attaching Telephone and Other Wires to Insulators
Tie wire with loop and clip to hold line wire
MCDANIEL, Esek
BARR, Michael
Tie Wire  
 1872
U 126,038 April 23, 1872 Improvement in Fastening Telegraph Wires to Insulators
Tie wire with insulated sheath or saddle to insulate it from conductor
DOREN, Dennis
Tie Wire  
 1932
U 1,858,873 May 17, 1932 Wire Support for Insulators
Tie wire using complicate preformed tie wire
ASP, Knoch
Tie Wire  
 1959
U 2,911,695 November 10, 1959 Tie for Fastening a Line Wire to an Insulator
Tie wire using a preformed helical wire with tie wire loop crimped several times to make points of contact with the insulator and secured in place with an interlocking clip
KNIGHT, Robert D.
MELVILLE, Thomas
Tie Wire United States Steel Corp.
 1920
U 1,358,521 November 9, 1920 Device for Attaching Wires to Insulators
Tie wire using a double loop of wire
CLARK, Robert L.
Tie Wire  
 1888
U 394,380 December 11, 1888 Wire Holder for Insulators
Tie wire standard method
LLOYD, Edwin L.
Tie Wire  
 1918
U 1,276,228 August 20, 1918 Line Wire Connector
Tie wire replacement using a preformed sheet metal loop with curved ends that fit over the line wire
KEENAN, James Condon
KEENAN, Michael Henry
Tie Wire  
 1958
U 2,843,653 July 15, 1958 Conductor Insulator Clamp
Tie wire replacement using a preformed bail wire design
MIX, Chauncey C.
Tie Wire  
 1957
U 2,816,155 December 10, 1957 Insulator Clamp
Tie wire replacement using a preformed adjustable sheet metal loop
BARNES, Robert I.
Tie Wire  
 1938
U 2,117,381 May 17, 1938 Insulator Cap
Tie wire replacement using a cap or collar that fits around the insulator to hold the line wire that can be installed from the ground
WARD, Leonard
Tie Wire  
 1952
U 2,585,249 February 12, 1952 Clip for Holding Electrical Conducting Wires to Insulating Supports
Tie wire replacement made from preformed spring metal clip
JOHNSON, Lawrence
Tie Wire  
 1946
U 2,396,895 March 19, 1946 Conductor Grip for Insulators
Tie wire replacement for Hi-Top styles using a preformed sheet metal strap and ears that fold over the line wire
SINES, Harold S.
Tie Wire  
 1908
U 888,763 May 26, 1908 Line Wire Fastener
Tie wire replacement consisting of wire, metal strap, and lever
STANTON, Fafayette
Tie Wire 5/100 to Forsyth Mfg. Co.
 1913
U 1,061,311 May 13, 1913 Line Wire Fastener
Tie wire replacement consisting of a metal U that clips the wire and lever to tighten around the insulator
MORGAN, Arthur M.
Tie Wire  
 1917
U 1,235,592 August 7, 1917 Device for Attaching Conductors to Insulators
Tie wire preformed in such a way to make attachment easier
PARRA, Henri
Tie Wire Soc. H. Parra & Cie.
 1908
U 880,971 March 3, 1908 Insulator
Tie wire over top seat & through pin
CARTER, George W.
Tie Wire  
 1940
U 2,202,538 May 28, 1940 Line Conductor Reinforcement and Tie
Tie wire or line reinforcement made of a stiff drawn wire preformed helix to fit around the diameter of the line wire without bending
SELQUIST, Rolf
Tie Wire Copperweld Steel Co.
 1908
U 878,520 February 11, 1908 Means for Tying Wires to Insulators, etc.
Tie wire method
GERDON, Lewis W.
Tie Wire 1/2 to Edwin P. Barnes
 1892
U 475,781 May 31, 1892 Electric Wire Holder
Tie wire made of a loop of wire with pre-formed loops on the ends to connect together and curved to interlock with the line wire
LLOYD, Edwin L.
Tie Wire  
 1946
U 2,411,007 November 12, 1946 Means for Fastening Conductors to Insulators
Tie wire made from hard metal wire that fits in the top conductor groove with line wire wrapped around the ends
SHAW, Douglas Thomas
Tie Wire  
 1904
U Specimen known 749,867 January 19, 1904 Method of Securing Electric Wires
Tie wire made from flat ribbon
KLINE, Alexander
Tie Wire  
 1912
U 1,042,199 October 22, 1912 Wire Clamp
Tie wire loop and lever
CARROLL, Harry L.
Tie Wire  
 1884
U 298,753 May 20, 1884 Insulated Telegraph Tie Wire
Tie wire insulated with strips of fabric coated with gutta percha
HINSDALE, Charles C.
Tie Wire  
 1934
U 1,967,616 July 24, 1934 Insulator
Tie wire for high voltage multipart pintype insulators using a conductive sleeve between conductor and insulator with tie wire wrapped around the sleeve
HILLEBRAND, William A.
Tie Wire The Ohio Brass Co.
 1913
U 1,061,823 May 13, 1913 Tie Wire for High Voltage Circuits
Tie wire for high voltage multipart insulators that can be changed safely with power still on
CRONIN, Jeremiah
Tie Wire The Cronin Electrical Appliances Co.
 1886
U 340,734 April 27, 1886 Electric Wire Insulator
Tie wire embedded in insulator
SEABOLDT, Bert
Tie Wire 3/4 to George Goss, Samuel Gilson, Andrew Horner
 1914
U 1,119,049 December 1, 1914 Insulator Clamp
Tie wire crank lever
SMITH, Amos L.
Tie Wire  
 1903
U 742,890 November 3, 1903 Telephone Tie Wire
Tie wire consisting of loop of wire with preformed ends to wrap around the line wire
MOORE, JR., George F.
Tie Wire  
 1908
U 877,101 January 21, 1908 Clip for Fixing Conducting Wires to Insulators
Tie wire consisting of long links that fits around the insulator with a plate to secure the line wire against the insulator
MACEK, Johann
Tie Wire  
U 886,774 May 5, 1908 Wire Tie
Tie wire consisting of a J-shaped wire looped on each end to secure it to the line wire
DREW, Harry A.
Tie Wire  
 1909
U 934,352 September 14, 1909 Line Wire Connector
Tie wire clip (U.S. Army)
PRATT, John Sedgwick
Tie Wire  
 1890
U 434,144 August 12, 1890 Electric Insulator
Tie wire clip
DUNBAR, John K.
Tie Wire  
 1893
U 491,208 February 7, 1893 Insulator Clip
Tie wire clip
EDMUNDS, William H.
Tie Wire  
 1899
U 619,915 February 21, 1899 Tie-Wire or Clasp for Insulators
Tie wire clip
WENTWORTH, Fred W.
Tie Wire The Inventor's Novelty Mfg. Co.
 1905
U 782,676 February 14, 1905 Arrangement for Securing Wires on Insulators
Tie wire clip
MACEK, Johann
Tie Wire  
 1908
U 882,095 March 17, 1908 Wire Tie for Insulators
Tie wire clip
CALLANE, Waldo E.
Tie Wire  
U 887,930 May 19, 1908 Means for Attaching Line Wires to Insulators
Tie wire clip
ELLIOTT, Chester J.
Tie Wire  
U 907,788 December 29, 1908 Insulator Clip
Tie wire clip
HALL, Alphonso R.
Tie Wire 1/2 to Lynn Maxson
 1909
U 940,034 November 16, 1909 Wire-supporting Device
Tie wire clip
LEADON, JR., John M.
Tie Wire  
 1910
U 966,882 August 9, 1910 Attachment of Telegraph and similar Line Wires to Insulators
Tie wire clip
BANDFIELD, William E.
Tie Wire  
 1911
U 992,595 May 16, 1911 Insulator Line Attaching Device
Tie wire clip
RIDENOUR, Lertin W.
Tie Wire  
 1912
U 1,048,587 December 31, 1912 Wire Holder for Insulators
Tie wire clip
REIFFER, Anthony J.
MAYS, David P.
Tie Wire  
 1917
U 1,215,245 February 6, 1917 Tie Wire for Insulators
Tie wire clip
BOYTER, Robert L.
Tie Wire  
U 1,247,531 November 20, 1917 Support for Line Wires
Tie wire clip
HEAD, Vernon
Tie Wire  
 1920
U 1,346,128 July 13, 1920 Device for Attachment of Electric Conductors to Insulators
Tie wire clip
KREBS, Frederick H.
Tie Wire  
 1898
U 609,888 August 30, 1898 Clamp for Electric Wires
Tie wire clamp with wing nut
LEONARD, Sylvester S.
Tie Wire  
 1896
U 558,509 April 21, 1896 Wire Clamp for Telegraph or Similar Wires
Tie wire clamp with cam lever
MIDDLETON, George
Tie Wire  
 1915
U 1,140,603 May 25, 1915 Insulator Clamp
Tie wire clamp for multipart insulator that clamps around the crown and hold the cable in the top groove
LEE, William S.
Tie Wire  
 1885
U 313,377 March 3, 1885 Clamp for Binding Wires to Insulators
Tie wire clamp (non-mechanical)
SAWYER, William H.
Tie Wire  
 1907
U 864,599 August 27, 1907 Insulator Tie for Electric Wires
Tie wire clamp
BECKETT, James W.
BECKETT, William R.
Tie Wire  
 1914
U 1,105,521 July 28, 1914 Insulator Attachment
Tie wire clamp
KEPHART, John A.
Tie Wire  
 1889
U 406,041 July 2, 1889 Insulator for Electric Wires
Tie wire cast into insulator
GILL, James C.
Tie Wire Hemingray Glass Co.
 1906
U 814,887 March 13, 1906 Insulator Attachment
Tie wire camming lever
SWANSON, Hans
Tie Wire  
 1913
U 1,067,246 July 15, 1913 Wire Clamp for Insulators
Tie wire camming lever
HUBBARD, John H.
Tie Wire 1/2 to H. A. Dusky
 1889
U 410,637 September 10, 1889 Insulator
Tie wire bridle for wire in insulator groove
DAVIS, William M.
Tie Wire  
 1959
U 2,897,256 July 28, 1959 Line Wire Support
Tie wire and line reinforcement using a preformed hard drawn wire helix designed to allow adjustment of line wire after installation
KITSELMAN, Harry L.
HOLMES, Alvin W.
Tie Wire Indiana Steel & Wire Co.
 1925
U 1,546,591 July 21, 1925 Cushion Head Insulator Pin
Threads on a pin made of soft metal wire such as lead
KYLE, William D.
Pin Line Material Co.
 1878
U 201,544 March 19, 1878 Improvement in Insulators for Telegraph Wires
Threads of segmented internal threads to match segmented pin
MATTHEWMAN, Joseph
Thread  
 1933
U 1,931,626 October 24, 1933 Insulator
Threads molded from cement in finished insulator
STEVENS, Frank J.
Thread Locke Insulator Corp.
 1884
U Specimen known 304,748 September 9, 1884 Mold for Making Glass Insulators
Threads formed with hinged thread forming tool
OAKMAN, Samuel
Thread  
 1855
U 13,402 August 7, 1855 Forming Screw Threads, etc., in the Necks of Glass Bottles and Similar Articles
Threads formed internally in necks of bottles and insulators
STONE, Amasa
Thread  
 1865
U Specimen known 48,906 July 25, 1865 Improvement in Insulators for Telegraph Wires
Threads formed internally for screw pin (see reissue 3,847 on 2-22-1870)
CAUVET, Louis A.
Thread  
 1870
R Specimen known 3,847 February 22, 1870 Improvement in Insulators
Threads formed internally for screw pin (reissue of 48,906)
CAUVET, Louis A.
Thread  
 1885
U Specimen known 324,157 August 11, 1885 Method of Forming Screw Threads on Glass
Threads formed in glass (plunger remains in glass during annealing)
PENNYCUICK, James G.
Thread  
 1916
U 1,205,971 November 28, 1916 Electric Insulator
Threads (metallic) or sleeve attached electrolytically
BUSCHETTI, Claudis
Thread  
 1871
U 115,521 May 30, 1871 Improvement in Insulators for Telegraph Wires
Threadless insulator with metal thimble cemented in pinhole
READ, Horatio
Thimble 1/2 to B. B. Hagerty
 1870
U 107,303 September 13, 1870 Improvement in Attaching Insulators to Telegraph Poles
Threadless insulator mounted on pin via horizontally inserted keeper pin
STEARNS, Joseph B.
Threadless  
 1905
U 807,459 December 19, 1905 Process of Forming Glass Articles
Threading process using fusible metal to form threads in glass before it melts
HARLOE, Morton
Threads 1/3 to Harry P. Decker
 1881
U Specimen known 247,100 September 13, 1881 Process of Forming Screws in Articles of Glass
Threading process inserts hollow blown glass thimble for threads
OAKMAN, Samuel
Thread Edward C. Sherburne
 1922
U Specimen known 1,407,550 February 21, 1922 Method and Machine for Forming Impressions in Plastic Articles
Threading porcelain by gyrating the thread mandrel (""wobbler"" method)
LAPP, John
Thread  
 1925
U 1,553,356 September 15, 1925 Machine for Producing Threads or Grooves in Plastic Articles
Threading method whereby mandrel rotates (similar to Lapp wobbler method)
BENNETT, Cornelius Van Dyke
Thread The Porcelain Insulator Corp.
 1870
U 107,075 September 6, 1870 Improvement in Telegraph Insulators
Threaded screw top (external) for mounting in hole in crossarm or pole
MCKEE, Samuel
Thread  
 1892
U 482,297 September 6, 1892 Electric Insulator
Threaded externally with saddle groove and square hole
CLARK, William H.
Thread  
 1931
U 1,824,766 September 29, 1931 Insulator
Thread insert of dry process porcelain, split & secured by glazewelding
BARROW, George M.
Thread Westinghouse Electric & Mfg. Co.
 1904
U 775,592 November 22, 1904 Insulating Support for Electric Third Rails
Third rail with two bolts to secure it to the support and a metal cap to secure the rail.
BARARD, Walter Hubbard
Third Rail  
 1899
U Specimen known 628,667 July 11, 1899 Insulated Rail Support
Third rail type (see stoneware specimen in 1989 CJ)
KING, Charles K.
MEAD, George A.
Third Rail  
 1896
U 563,482 July 7, 1896 Insulating Support for Rails or Electric Railways
Third rail pin type insulator
HALEY, Patrick
Third Rail  
 1909
U 932,523 August 31, 1909 Insulator for Third Rails
Third rail insulator.
WEAVER, Eugene M.
Third Rail  
 1900
U Specimen known 664,470 December 25, 1900 Construction for Third Rail Electric Railways
Third rail insulator, support, and fastening device. Insulator was made by the Reconstructed Granite Co. as shown in their advertisement in EWE dated April 15, 1905.
COURTENAY, William
Third Rail  
 1896
U 556,971 March 24, 1896 Insulated Support for Contact Rails
Third rail insulator with top and side brackets (see reissue 11,613 on 6-22-1897)
HANSON, Augustus
CHAPMAN, James R.
Third Rail  
 1897
R 11,613 June 22, 1897 Insulator Support for Contact Rails
Third rail insulator with top and side brackets (reissue of 556,971)
HANSON, Augustus
CHAPMAN, James R.
Third Rail General Electric Co.
 1885
U 320,631 June 23, 1885 Insulator for Tracks
Third rail insulator with rubber under the rail and below the insulator. The rail is bolted to the insulator.
DAFT, Leo
Third Rail  
U 320,632 June 23, 1885 Electric Conductor
Third rail insulator with rubber under the rail and below the insulator. The rail is bolted to the insulator.
DAFT, Leo
Third Rail  
 1897
U 595,089 December 7, 1897 Third Rail Insulator
Third rail insulator with metal protective covering.
ANDERSON, Albert
Third Rail 1/2 to Johan M. Anderson
 1908
U 888,318 May 19, 1908 Third Rail Insulator
Third rail insulator with metal cap to secure the rail.
DELLOYE, Lucien Henri
Third Rail Societe Anonyme des Manufactures Des Glaces et Produits Chimiques de Saint-Gobain
 1904
U 770,960 September 27, 1904 Third Rail Insulator
Third rail insulator with metal cap to hold the rail and a metal clip to secure the insulator to the metal support.
DUNBAR, Robert V.
Third Rail  
 1899
U 619,974 February 21, 1899 Rail Insulator
Third rail insulator with metal cap that secures the rail to the insulator.
MARTIN, Charles B.
Third Rail  
 1904
U 763,434 June 28, 1904 Insulating Support for Electric Third Rails
Third rail insulator with metal bracket that fits in grooves on the upper sides of the insulator.
SLATER, Frederick R.
Third Rail 1/2 to Robert W. Lyle
 1901
U 675,615 June 4, 1901 Insulator
Third rail insulator with iron mounting bracket and cap to support the rail
ANDERSEN, Johan M.
ANDERSEN, Albert
Third Rail  
U 678,195 July 9, 1901 Third Rail Insulator
Third rail insulator with iron mounting bracket and cap to support the rail
POTTER, William B.
Third Rail General Electric Co.
 1934
U Specimen known 1,984,245 December 11, 1934 Insulator Support for Power Rails
Third rail insulator with interlocking pin and pinhole and side grooves to secure the rail on top
BANKS, William C.
Third Rail  
 1904
U 762,297 June 14, 1904 Third Rail Insulator
Third rail insulator with enameled top and bottom plate
FRITZE, Henry L.
Third Rail  
 1903
U 723,062 March 17, 1903 Third Rail Insulator
Third rail insulator with ears that move in to secure the rail.
STEWART, JR., Samuel B.
Third Rail General Electric Co.
 1891
U 455,107 June 30, 1891 Insulator
Third rail insulator with cup to hold hygroscopic chemical and means to heat insulator to drive off moisture
MUNSIE, James F.
Third Rail  
 1914
U 1,111,570 September 22, 1914 Insulator
Third rail insulator with bolt holes on top and bottom side and flange projecting out in the center of the side designed to carry the rail on top
FRIEDLAENDER, Eugene
Third Rail  
 1897
U 584,476 June 15, 1897 Insulator
Third rail insulator with a metal base to prevent movement of the insulator and rail.
LIBBY, Sam H.
Third Rail General Electric Co.
 1906
U 829,416 August 28, 1906 Third Rail Insulator
Third rail insulator with 2-part metal cap to secure the rail.
MCGILL, John J.
Third Rail 1/2 to Frank J. Guernsey
 1904
U 764,384 July 5, 1904 Insulating Support for Electric Third Rails
Third rail insulator that screws into metal support ahd has a threaded hole in top to receive the metal rail support.
SLATER, Frederick R.
Third Rail Bleecker S. Barnard
 1905
U 808,222 December 26, 1905 Third Rail Insulator
Third rail insulator that fits in metal support and cemented metal cap to secure the rail.
STEWART, JR., Samuel B.
Third Rail General Electric Co.
 1908
U 908,180 December 29, 1908 Third Rail
Third rail insulator system (Ohio Brass)
WILGUS, William J.
SPRAGUE, Frank J.
Third Rail  
 1902
U 717,389 December 30, 1902 Third Rail Insulator
Third rail insulator mounted on pedestal with metal cap to secure the rail.
GONZENBACH, Ernest
Third Rail  
 1898
U 606,830 July 5, 1898 Insulator
Third rail insulator mounted on a wooden block with metal cap on top to support the rail
WILLARD, Ben
Third Rail General Electric Co.
D 28,981 July 5, 1898 Design for a Cap for Insulators
Third rail insulator metal cap
WILLARD, Ben
Third Rail General Electric Co.
 1908
U 877,804 January 28, 1908 Insulator for Heavy Conductors
Third rail insulator made of Electrose.
STEINBERGER, Louis
Third Rail  
 1904
U 761,553 May 31, 1904 Third Rail Support
Third rail insulator made of Electrose
STEINBERGER, Louis
Third Rail  
 1909
U 928,709 July 20, 1909 Insulator for Third Rails
Third rail insulator made of Electrose
STEINBERGER, Louis
Third Rail  
 1885
U 320,633 June 23, 1885 Electric Conductor
Third rail insulator flared down away from the pin.
DAFT, Leo
Third Rail  
 1900
U 648,057 April 24, 1900 Third Rail Insulator
Third rail insulator designed to allow insulator to rise and fall with movement of the rail.
RICE, JR, Edwin W.
Third Rail General Electric Co.
 1889
U 402,836 May 7, 1889 Insulator and Holder for Electric Railways
Third rail insulator clamps the rail upsidedown.
JENNINGS, Byron
Third Rail  
 1905
U 796,501 August 8, 1905 Conductor Rail Holder for Electric Railways
Third rail insulator and metal clips and rail holder
COURTENAY, George L.
Third Rail  
 1908
U 908,136 December 29, 1908 Third Rail Insulator
Third rail insulator (Ohio Brass)
RANDOLPH, Leonard M.
Third Rail Essex Co.
 1905
U 786,472 April 4, 1905 Insulator for the Conductors of Electric Railways
Third rail insulator (England; Ohio Brass) (Brown p. 75)
WARD, Frank D.
FURNISS, Harry C.
Third Rail 1/3 to Henry Bradford
 1896
U 570,034 October 27, 1896 Insulator
Third rail insulator
MARTIN, Charles B.
HEWLETT, Edward M.
Third Rail General Electric Co.
U 574,101 December 29, 1896 Insulator
Third rail insulator
MARTIN, Charles B.
Third Rail General Electric Co.
 1898
D 29,741 November 29, 1898 Design for a Third Rail Insulator
Third rail insulator
HEWLETT, Edward M.
Third Rail General Electric Co.
 1900
U 644,646 March 6, 1900 Insulator for Use on Electric Railways
Third rail insulator
THOMAS, James
THOMAS, William R.
Third Rail  
 1907
U 843,844 February 12, 1907 Third Rail Insulator
Third rail insulator
REDMAYNE, Robert Norman
Third Rail  
 1919
U 1,315,998 September 16, 1919 Insulator Support Thimble
Thimble with standard external threads pressed out of sheet metal and attached to a steel pin
SOUTHGATE, George T.
Thimble  
 1929
U 1,737,999 December 3, 1929 Insulator
Thimble that screws into the pinhole and screws onto a special steel pin
GODDARD, Walter T.
Thimble Locke Insulator Corp.
 1910
U 949,604 February 15, 1910 System of Insulation
Thimble shaped suspension insulator separated by tubular insulator
STEINBERGER, Louis
Thimble  
 1920
U 1,328,687 January 20, 1920 Insulator Support
Thimble of metal for multipart insulator
PLIMPTON, Bentley A.
Thimble  
 1917
U 1,219,862 March 20, 1917 Separable Insulator Thimble Structure
Thimble designed to be removable with external & internal threads
PEIRCE, JR., Charles L.
Thimble Hubbard & Co.
 1918
U 1,268,315 June 4, 1918 Insulator Thimble
Thimble (threaded) for cementing in pin hole
BECKER, Raymond A.
MADDEX, Thomas E.
Thimble  
 1912
U 1,019,451 March 5, 1912 Sectional Insulator
The GE breakaway insulator, M-2202 or M-2505, is shown in the catenary design
GILLETTE, John C.
Sectional Insulator General Electric Co.
 1924
U 1,515,864 November 18, 1924 Method of Testing Insulators
Testing method by extending the flashover distance
LAPP, Grover W.
Testing  
 1933
U 1,930,735 October 17, 1933 Terminal Mounting for Lighting Fixtures
Terminal mounting for lighting fixture.
YARSLEY, Thomas G.
Fixture The Harford Faience Co.
 1908
U 893,285 July 14, 1908 Electric Cable Insulator
Terminal insulator providing a tight seal between conductor running down through the center of the insulator
TOMPKINS, Edward M.
Insulator  
 1942
U 2,301,266 November 10, 1942 Method and Means for Transposing Electrical Conductors
Tensioning device before and after transposition brackets for carrier circuits
FOX, Arthur L.
Transposition Bell Telephone Laboratories, Inc.
 1874
U 157,717 December 15, 1874 Improvement in Tempering Glass, and Furnaces Therefor
Tempering glass by dropping into oil (see patent 169,783)
LA BASTIE, Francois B. A. Royer de
Glass  
 1877
D Specimen known 9,858 March 20, 1877 Design for Telegraph Insulator
Telegraph insulator
BROOKFIELD, James M.
Pin-type  
D 9,956 May 8, 1877 Design for Telegraph Insulators
Telegraph insulator
BROOKFIELD, James M.
Pin-type  
 1867
U 69,585 October 8, 1867 Improvement in Telegraph Apparatus
Telegraph
POND, C. H.
Telegraph  
 1893
U 494,286 March 28, 1893 Apparatus for Protecting Buildings from Lightning
System replaces lightning rods by using batteries to put a charge on wires run along the edges of the roof to prevent a lightning strike
BARTLETT, Jonathan B. L.
Lightning Rod  
 1908
U 903,875 November 17, 1908 System of Electrical Insulation
System of multipart insulator arranged in sequence to support high tension lines
LOCKE, Fred M.
Suspension  
 1880
U 234,484 November 16, 1880 Lightning Guard for Oil Tanks
System of lightning rods to protect oil tanks with the protection wires brought up high above the center of the tank
KNUDSON, Adolphus A.
Lightning Rod  
 1917
U 1,244,118 October 23, 1917 System of Lightning Conductors
System of lightning rods to form a metallic cage surrounding the building
MULLEN, George Allen
Lightning Rod  
 1871
U Specimen known 120,387 October 31, 1871 Improvement in Tops for Sirup Pitchers
Syrup jug top
LANG, George Ph.
LAUSTER, Peter
HU  
U Specimen known 120,748 November 7, 1871 Improvement in Tops for Molasses Pitchers
Syrup jug top
IRWIN, George M.
HU  
 1884
U 292,660 January 29, 1884 Jug Top
Syrup jug top
LANG, George P.
LAUSTER, Peter
HU  
U 301,946 July 15, 1884 Jug Top
Syrup jug top
WRIGHT, Homer
HU  
 1926
U 1,574,495 February 23, 1926 Beverage Dispenser
Syrup dispenser for beverages
LOOK, Carrol A.
McLaughlin  
 1914
U 1,109,586 September 1, 1914 Line Disconnecting Switch
Switch to disconnect line for repairs. Composed of several multipart insulators, knife switch, and handles near the ground to operate the switch.
HEWLETT, Edward M.
Switch General Electric Co.
 1928
U 1,690,989 November 6, 1928 Multiple String Insulator Suspension
Suspensions made up of several strings of disks
MARVIN, Richard H.
Suspension The R. Thomas & Sons Co.
 1916
U 1,182,940 May 16, 1916 High Voltage Insulator
Suspension, two part made of Electrose
STEINBERGER, Louis
Suspension  
 1927
U 1,637,374 August 2, 1927 Insulator
Suspension, tubular with ribs and cap on both ends
FORTESCUE, Charles Le G.
Suspension Westinghouse Electric & Mfg. Co.
 1922
U 1,429,110 September 12, 1922 Insulator
Suspension, special U-bolt links and hook for Hewlett disks
SEAVEY, Haller D.
Suspension Maxwell Engr & Mfg. Co.
 1924
U 1,515,755 November 18, 1924 Suspension Insulator
Suspension, special pin design
ROHDE, Fritz
SCHWINNING, Max
Suspension Nora Pfannenstiel
 1948
U 2,443,435 June 15, 1948 Insulator
Suspension, pin design to prevent expansion stress from corrosion
TAYLOR, John J.
Suspension The Ohio Brass Co.
 1926
U 1,578,508 March 30, 1926 Insulator
Suspension, multipart with top/bottom grooves to attach support rings
GARBUTT, Harry L.
Suspension Westinghouse Electric & Mfg. Co.
 1962
U 3,054,704 September 18, 1962 Insulator Assembly Method and Apparatus
Suspension, method of sealing cement to improve strength during curing
RUOFF, George M.
Suspension A. B. Chance Co.
 1923
U 1,446,067 February 20, 1923 Method of Connecting Insulator Units
Suspension, method of cementing pin
REAGAN, Frank H.
Suspension Locke Insulator Corp.
 1927
U 1,645,447 October 11, 1927 Suspension Insulator
Suspension, method of cementing metal bolt using flexible thimble
PECK, John M.
Suspension The Porcelain Insulator Corp.
U 1,653,117 December 20, 1927 Suspension Insulator
Suspension, method of cementing metal bolt using flexible thimble
PECK, John M.
Suspension The Porcelain Insulator Corp.
 1988
U 4,782,199 November 1, 1988 Insulators Having Improved Steep Wave Front Characteristics
Suspension, head treated with special glaze to strengthen cap/cement
SEIKE, Shoji
TOTOKI, Takao
MIMA, Toshiyuki
Suspension NGK Insulators, Ltd.
 1937
U 2,072,201 March 2, 1937 Insulator and Method of Making It
Suspension, glass, coat crown with graphite prevents cement adhesion
DIBBLE, Clarence H.
Suspension Corning Glass Works
 1934
U 1,960,147 May 22, 1934 Insulator and Method of Treating It
Suspension, glass under cap is etched & treated with graphite
FULCHER, Gordon S.
Suspension Corning Glass Works
 1920
U 1,348,248 August 3, 1920 Disk Suspension Insulator
Suspension, Electrose similar to Hewlett
STEINBERGER, Louis
Suspension  
 1923
U 1,446,523 February 27, 1923 Insulator
Suspension, disk made of Electrose with metal cap
STEINBERGER, Louis
Suspension  
 1925
U 1,556,029 October 6, 1925 Method of Connecting Insulator Units
Suspension, card used to keep cement off top surface around cap
REAGAN, Frank H.
Suspension Locke Insulator Corp.
 1913
U 1,075,217 October 7, 1913 High Voltage Insulator
Suspension, cap design to allow easy connection using a spring-loaded clip
MAXWELL, Marshall P.
Suspension  
 1922
U 1,406,953 February 14, 1922 Strain Insulator
Suspension with special slotted cap and pin to improve cement joint
GODDARD, Walter T.
Suspension Locke Insulator Corp.
 1928
U 1,684,441 September 18, 1928 High Tension Insulator
Suspension with special ribbed cap and pin
GOUVERNEUR, Minor F. H.
Suspension Locke Insulator Corp.
 1933
U 1,910,333 May 23, 1933 Insulator Connection
Suspension with special cotter pin to prevent cap and pin from coming disconnected
HAWLEY, Kent A.
Suspension Locke Insulator Corp.
 1927
U 1,650,034 November 22, 1927 Insulator
Suspension with slotted metal cap for pin linkage
OSBORNE, David H.
Suspension Locke Insulator Corp.
 1917
U 1,241,528 October 2, 1917 Insulator
Suspension with shells nested together by means of external threads
LINCOLN, Paul M.
Suspension Westinghouse Electric & Mfg. Co.
 1984
U 4,443,659 April 17, 1984 Glaze to Pin Connection for an Electrical Insulator with Embedded Metal Fitting
Suspension with semi-conducting glaze & conducting coating on cement
TATEM, William A.
Suspension Interpace Corp.
 1924
U 1,489,690 April 8, 1924 Insulator and Method of Assembling the Same
Suspension with sanded joints & soft coating for better adhesion of cement
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
 1916
U 1,173,994 February 29, 1916 High Tension Insulator
Suspension with ribbed tubes and interlocking links
BARFOED, Svend
Suspension 2/5 to Otis Gibson
 1924
U 1,489,809 April 8, 1924 Insulator
Suspension with ribbed sheet metal in pin and cap for better adhesion of cement
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
U 1,489,689 April 8, 1924 Insulator
Suspension with ribbed pin and cap for better adhesion of cement
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
U 1,490,080 April 15, 1924 Insulator
Suspension with ribbed pin and cap & notched cap for better adhesion of cement
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
 1968
U 3,389,214 June 18, 1968 Coated Insulator
Suspension with RFI coating composed of semiconducting ceramic of silicon carbide
SMOTHERS, William J.
RFI The Ohio Brass Co.
 1929
U 1,737,749 December 3, 1929 Insulator
Suspension with reinforcing band around cap and ribbed pin
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
 1908
U 884,641 April 14, 1908 Hanging Insulator
Suspension with multipart shells and cable clamp
CLARK, Walter G.
Suspension  
 1948
U 2,443,436 June 15, 1948 Insulator
Suspension with moisture resistant cushion at bottom of cap and pin
TAYLOR, John J.
Suspension The Ohio Brass Co.
 1917
U 1,215,549 February 13, 1917 Electric Conductor Insulating Support
Suspension with method of balancing the electrical load across the string
KOONTZ, JR., John A.
Suspension 1/2 to Beardsley/1/4 to Shoemaker
 1928
U 1,659,183 February 14, 1928 Insulator
Suspension with metal flanges to balance electrical field
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
 1927
U 1,617,154 February 8, 1927 Insulator
Suspension with metal eye-bolt pin and cap with special securing clips
GOUVERNEUR, Minor F. H.
Suspension Locke Insulator Corp.
 1926
U 1,579,174 March 30, 1926 Insulator
Suspension with metal eye-bolt pin
GOUVERNEUR, Minor F. H.
Suspension Locke Insulator Corp.
 1924
U 1,506,863 September 2, 1924 Suspension Insulator
Suspension with metal cap on top and underneath
PLIMPTON, Bentley A.
Suspension  
 1928
U 1,684,066 September 11, 1928 Insulator
Suspension with metal and porcelain shaped to conform with electric field
MINOR, Douglas F.
Suspension Westinghouse Electric & Mfg. Co.
 1920
U 1,363,673 December 28, 1920 Insulator
Suspension with internal ribbed cap and ribbed pin to improve cement joint
SCHAAKE, William
Suspension Westinghouse Electric & Mfg. Co.
 1917
U 1,219,450 March 20, 1917 Insulator
Suspension with interlocking linkage similar to Hewlett and hog liver
FOWLE, Frank F.
Suspension  
 1929
U 1,719,945 July 9, 1929 Insulator
Suspension with cutout metal cap and split spring metal eye-pin
SCHOENTHALER, George Henry
Suspension Locke Insulator Corp.
 1920
U 1,333,640 March 16, 1920 Electric Insulator
Suspension with bolted on metal cap (Italy)
SEMENZA, Guido
Suspension  
 1910
U Specimen known 947,274 January 25, 1910 Suspension Device for Insulators
Suspension with ball and socket coupling
AUSTIN, Arthur O.
Suspension The Akron Hi-Potential Porcelain Co.
 1911
U 1,006,040 October 17, 1911 Insulator
Suspension using multiple parts connected with a cable
ALSBERG, Julius
Suspension  
U 1,006,041 October 17, 1911 Insulator
Suspension using multiple parts connected with a cable
ALSBERG, Julius
Suspension  
U 1,006,042 October 17, 1911 Insulator
Suspension using multiple parts connected with a cable
ALSBERG, Julius
Suspension  
 1912
U 1,015,229 January 16, 1912 Insulator
Suspension using multiple parts cemented together on tubular core. The patent is similar to the commonly referred ""Micarta Core"" insulators, but experts believe the patent was not used for those insulators. The glass insulators may have been made by Hem
HILLIARD, John D.
PARSONS, Charles E.
Suspension J. E. Way
 1917
U 1,251,097 December 25, 1917 Strain Insulator
Suspension using metal rings to secure pin and cap
PECK, John M.
Suspension Locke Insulator Mfg. Co.
U 1,234,205 July 24, 1917 Strain Insulator
Suspension using metal jaws inside to secure pin instead of using cement
OSBORNE, David H.
Suspension Locke Insulator Mfg. Co.
 1929
U 1,712,432 May 7, 1929 Electrical Insulator Assembly
Suspension using Hewletts for novel electric switch
HAGERMAN, Alva Lloyd
Suspension  
 1892
U 467,942 February 2, 1892 Insulator
Suspension type using mica sheets with metal case
LEE, Charles T.
Suspension 1/2 to The Gould & Watson Co.
 1920
U Specimen known 1,329,770 February 3, 1920 Insulator
Suspension type for J-D
JOHNSTON, Robert M.
Suspension Jeffery-Dewitt Co.
 1891
U 448,395 March 17, 1891 Insulator
Suspension type (2-part wooden) for trolley wires
WHEELER, George K.
Suspension  
 1905
U 779,659 January 10, 1905 Insulator
Suspension type
LOCKE, Fred M.
Suspension  
 1911
U 998,359 July 18, 1911 High Voltage Insulator
Suspension type
LOCKE, Fred M.
Suspension Locke Insulator Mfg. Co.
 1919
U 1,303,324 May 13, 1919 Electric Insulator
Suspension tubular insulator with flanged top metal cap and bottom metal cap
JACKSON, Ray P.
Suspension Westinghouse Electric & Mfg. Co.
 1909
U Specimen known 925,561 June 22, 1909 Suspension of High Tension Lines
Suspension system for high tension transmission
BUCK, Harold W.
HEWLETT, Edward M.
Suspension General Electric Co.
U 917,785 April 13, 1909 Insulating Support for High Tension Conductors
Suspension support system
MERSHON, Ralph D.
Suspension  
 1928
U 1,661,823 March 6, 1928 Insulator
Suspension string with insulators having conducting surface to balance electrical field
HAWLEY, Kent A.
Suspension Locke Insulator Corp.
U 1,691,330 November 13, 1928 Insulator
Suspension string with flange attachment to balance electric field
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
 1917
U 1,245,940 November 6, 1917 Insulator
Suspension string of various size disks to balance electrical capacitance
MARVIN, Richard H.
Suspension The R. Thomas & Sons Co.
 1926
U 1,578,526 March 30, 1926 Insulator
Suspension string composed of multiple porcelain disks with a hook-like link on top and bottom to allow them to be quickly strung together
JACKSON, Ray P.
Suspension Westinghouse Electric & Mfg. Co.
 1927
U 1,622,648 March 29, 1927 Insulator
Suspension similar to Hewlett with uniform thickness of porcelain
JACKSON, Ray P.
Suspension Westinghouse Electric & Mfg. Co.
 1920
U Specimen known 1,360,352 November 30, 1920 Insulator
Suspension sanded under cap and pin to improve cement adhesion
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
 1932
U 1,848,622 March 8, 1932 Insulator
Suspension rod with metallic shields to keep upper and lower parts dry to prevent electrical leakage
GOUVERNEUR, Minor F. H.
Suspension Locke Insulator Corp.
 1910
U Specimen known 966,584 August 9, 1910 Protecting Apparatus for Insulators
Suspension protected by arcing ring
NICHOLSON, Lloyd C.
Suspension  
 1929
U 1,704,005 March 5, 1929 Insulator Mounting
Suspension pin with lugs that fits in slot and turned to lock it inside the insulator
KATZENBERGER, Bernard
JANSEN, Theodor
Suspension Aktiengesellschaft Brown Boveri & Cie.
 1917
U 1,248,498 December 4, 1917 Suspension Device for Insulators
Suspension pin to link disks
JACKSON, Ray P.
SCHAAKE, William
Suspension Westinghouse Electric & Mfg. Co.
 1918
U 1,286,010 November 26, 1918 Suspension Device
Suspension pin to link disks
JACKSON, Ray P.
Suspension Westinghouse Electric & Mfg. Co.
 1935
U 1,988,155 January 15, 1935 Insulator
Suspension pin
BOVARD, Floyd G.
Suspension The Ohio Brass Co.
 1920
U 1,362,388 December 14, 1920 High Tension Insulator
Suspension or strain of resin rod covered with ceramic to keep rod dry
BLACKWELL, Francis O.
BUCK, Harold W.
Suspension General Electric Co.
 1887
U 362,682 May 10, 1887 Loop Insulator
Suspension or strain insulator with shield
SANDS, Horace Van
Suspension  
 1923
U 1,454,634 May 8, 1923 Insulator
Suspension or multipart attachment using wire lacing
GODDARD, Walter T.
Suspension Locke Insulator Corp.
 1917
U 1,212,706 January 16, 1917 Disk Strain Insulator
Suspension or disk strain made of Electrose with spring bar to allow slight vertical movement
STEINBERGER, Louis
Suspension  
U 1,223,909 April 24, 1917 Disk Strain Insulator
Suspension or disk strain made of Electrose with spiraling ridges on each side
STEINBERGER, Louis
Suspension  
U 1,212,704 January 16, 1917 Disk Strain Insulator
Suspension or disk strain made of Electrose with corrugations top and bottom
STEINBERGER, Louis
Suspension  
 1931
U 1,819,748 August 18, 1931 Insulator
Suspension of the cap and pin design specially designed to make a strong joint for the cap and pin
HAWLEY, Kent A.
OSBORNE, David H.
Suspension Locke Insulator Corp.
 1915
U 1,128,424 February 16, 1915 Insulator
Suspension multipart insulator fitted with arcing horns
DUNCAN, John D. E.
Suspension  
 1925
U 1,543,313 June 23, 1925 Insulator
Suspension metal pin and cementing technique
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
 1969
U 3,444,314 May 13, 1969 Suspension Insulator Having a Cap With Internal Load Transmitting Surfaces
Suspension metal cap designed with steps to aid in holding cement on insulator
VAN TUYL, Thomas Oliver
Suspension  
 1917
U 1,246,461 November 13, 1917 Strain Insulator
Suspension metal cap design
PLIMPTON, Bentley A.
Suspension  
 1918
U 1,266,711 May 21, 1918 Strain Insulator
Suspension metal cap design
PLIMPTON, Bentley A.
Suspension  
 1917
U 1,250,387 December 18, 1917 Electric Insulator
Suspension made of several parts bolted together
THOMAS, Percy H.
Suspension  
 1918
U 1,273,015 July 16, 1918 Electric Insulator
Suspension made of several parts bolted together
THOMAS, Percy H.
Suspension  
 1916
U 1,206,158 November 28, 1916 Safety Strain Insulator
Suspension made of Electrose with special interlocking links
STEINBERGER, Louis
Suspension  
 1917
U 1,212,703 January 16, 1917 Disk Type Chain Insulator
Suspension made of Electrose with special interlocking links
STEINBERGER, Louis
Suspension  
 1915
U 1,160,543 November 16, 1915 High Voltage Strain Insulator
Suspension made of Electrose units
STEINBERGER, Louis
Electrose  
 1916
U 1,205,812 November 21, 1916 Strain Insulator
Suspension made of Electrose similar to Hewlett with interlocking links
STEINBERGER, Louis
Suspension  
 1914
U 1,118,694 November 24, 1914 Disk Strain Insulator
Suspension made of Electrose like fishtail Hewlett
STEINBERGER, Louis
Suspension  
 1915
U 1,160,546 November 16, 1915 Disk Strain Insulator
Suspension made of Electrose like fishtail Hewlett
STEINBERGER, Louis
Electrose  
 1910
U 974,610 November 1, 1910 Strain Insulator
Suspension made from Electrose
STEINBERGER, Louis
Suspension  
 1929
U 1,712,556 May 14, 1929 Insulator Suspension Link
Suspension links for Hewlett disks that are ductile and pliable
GOUVERNEUR, Minor F. H.
Suspension Locke Insulator Corp.
 1925
U Specimen known 1,526,168 February 10, 1925 Insulator Link
Suspension links for Hewlett disks
MARVIN, Richard H.
Suspension The R. Thomas & Sons Co.
 1924
U Specimen known 1,500,814 July 8, 1924 Link Insulator
Suspension link strain
HEWLETT, Edward M.
Suspension General Electric Co.
 1917
U 1,228,711 June 5, 1917 Connecting Device for Chain-Type Insulators
Suspension link coupling
STEINBERGER, Louis
Suspension  
 1916
U 1,177,354 March 28, 1916 Line Insulator
Suspension interconnecting linking device
RANSOM, Daniel Parke
Suspension  
 1914
U 1,106,797 August 11, 1914 Electric Insulator
Suspension insulators
FAY, John L.
WAY, Sylvester B.
Suspension  
 1929
U 1,699,063 January 15, 1929 Method of Making Insulators
Suspension insulator, method to attach skirts to a central shank
HAWLEY, Kent A.
Suspension Locke Insulator Corp.
 1910
U 974,177 November 1, 1910 Insulator for High Tension transmission systems
Suspension insulator with yieldable slugs to distribute strain pressure
NOEGGERATH, Jakob E.
Suspension General Electric Co.
 1934
U 1,941,749 January 2, 1934 Insulator
Suspension insulator with upwardly projecting wings on the cap to serve as flux control
HILLEBRAND, William A.
Suspension The Ohio Brass Co.
 1918
U 1,282,481 October 22, 1918 Multiple Section Suspension Insulator
Suspension insulator with symmetrical metal parts to reduce electrical strain
SONNEBORN, Sol S.
Suspension  
 1939
U 2,162,288 June 13, 1939 Insulator
Suspension insulator with stepped rings to allow washing by rain and greater leakage length
TAYLOR, John J.
Suspension  
 1908
U Specimen known 880,203 February 25, 1908 Insulator
Suspension insulator with petticoat
DUNCAN, John D. E.
Suspension  
 1931
U 1,794,111 February 24, 1931 Multiple Skirt Insulator
Suspension insulator with multiple skirts and pins or hooks embedded in the ends
HAWLEY, Kent A.
Suspension Locke Insulator Corp.
U 1,810,424 June 16, 1931 Means for Sealing Insulators
Suspension insulator with metal connectors cemented in the insulator with molten metal under a vacuum to remove entrapped air in the joint
HAWLEY, Kent A.
Suspension Locke Insulator Corp.
 1932
U 1,851,671 March 29, 1932 High Tension Insulator
Suspension insulator with metal attachments fixed with zinc, lead/antimony alloys
JOHNSTON, Robert M.
MCLACHLAN, Alexander
Suspension  
 1945
U 2,383,090 August 21, 1945 Electric Insulator
Suspension insulator with improved cementing methods
TOROK, Julius J.
Suspension Corning Glass Works
 1933
U 1,927,639 September 19, 1933 Electric Insulator
Suspension insulator with hole in top to insert pin, plug to cement in the hole, and cap cemented over the top
GRAMSS, Ernst
Suspension  
 1930
U 1,784,392 December 9, 1930 Manufacture of Insulators
Suspension insulator with glazed sanded surfaces to improve strength of cap
ROWLAND, Davidge H.
Suspension Locke Insulator Corp.
 1962
U Specimen known 3,024,303 March 6, 1962 Glazed Insulator Which Comprises a Ceramic Body and a Primary Coat Under the Glaze Which has a Lower Coefficient of Thermal Expansion than the Ceramic Body
Suspension insulator with compression glaze coating under outer glaze surface
SMOTHERS, William J.
SELSING, Jorgen
Suspension The Ohio Brass Co.
 1916
U 1,198,137 September 12, 1916 Insulator
Suspension insulator with an outer covering of spun steel or iron.
LINCOLN, Paul M.
Suspension Westinghouse Electric & Mfg. Co.
 1987
U 4,658,092 April 14, 1987 Explosion Preventing Suspension Insulator
Suspension insulator using cement to prevent damage to insulator from expansion
NAKAMURA, Itsushi
MORI, Shigeo
Suspension NGK Insulators, Ltd.
 1985
U 4,559,414 December 17, 1985 Electrolytic Corrosion Resistant Insulator
Suspension insulator that is corrosion resistant
KITO, Kuniji
WATANABE, Akihiro
Suspension NGK Insulators, Ltd.
U 4,524,404 June 18, 1985 High Voltage Insulator Assemblage Having Specially Chosen Series Resistance
Suspension insulator that eliminates flashover due to dirty insulators
VERMA, Mandranjan
Suspension  
 1931
U 1,832,157 November 17, 1931 Insulator
Suspension insulator pin that is coated and designed to prevent stress from temperature changes
VAN ATTA, Cloyd B.
Suspension Locke Insulator Corp.
 1912
U 1,015,224 January 16, 1912 Insulator
Suspension insulator of insulating rope, hoods, and arcing rods. [This looks very close to the handful of glass suspension insulators found in 2002 in northern CA by Paul Greaves and Mike Spadafora. The glass was most probably made by Hemingray. No markin
ALSBERG, Julius
Suspension  
U 1,038,473 September 10, 1912 Insulator
Suspension insulator of insulating rope and hoods
ALSBERG, Julius
Suspension  
 1910
U 973,204 October 18, 1910 Insulating System for High Potential Electric Conductors
Suspension insulator multiples
LOCKE, Fred M.
Suspension Locke Insulator Mfg. Co.
 1927
U 1,625,601 April 19, 1927 Insulator
Suspension insulator made of multiple sections that are clamped together in the field
GODDARD, Walter T.
Suspension Locke Insulator Corp.
 1929
U 1,730,180 October 1, 1929 Insulator
Suspension insulator made of cylindrical insulator and metal hoods on each end
WAHLBERG, Nils A.
Suspension Westinghouse Electric & Mfg. Co.
 1908
U 907,406 December 22, 1908 Insulator for High Tension Lines
Suspension insulator made of a thick rod of glass or porcelain with an inner rod made of hickory wood, which has a high tensile strength. There is a metal cap on each end screwed onto each end of the wooden rod and over the glass or porcelain rod.
ROWE, Norman
Suspension  
U 883,397 March 31, 1908 Insulator
Suspension insulator made of a rod of porcelain
GODDARD, Walter T.
LAPP, John S.
Suspension The Locke Insulator Mfg. Co.
 1931
U 1,799,580 April 7, 1931 Insulator
Suspension insulator composed of wood fibers impregnated with tar
BURKE, Edmund
Suspension Brown Co.
 1921
U 1,373,576 April 5, 1921 Electric Insulator
Suspension insulator composed of several parts to withstand tension
THOMAS, Percy H.
Suspension  
 1924
U 1,520,984 December 30, 1924 Electric Insulator
Suspension insulator composed of several parts to withstand tension
THOMAS, Percy H.
Suspension Westinghouse Electric & Mfg. Co.
 1932
U 1,868,479 July 26, 1932 Compensating Strut Type Insulator
Suspension insulator cap and pin with special rings to aid strength of cement joint
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
 1931
U 1,819,380 August 18, 1931 Insulator Connection
Suspension insulator cap and pin that can be locked in securely
OSBORNE, David H.
Suspension Locke Insulator Corp.
 1934
U 1,958,880 May 15, 1934 Suspension Insulator
Suspension insulator cap and pin design to reduce stress (see 1,822,485)
ARNOLD, Edwin E.
Suspension Westinghouse Electric & Mfg. Co.
 1932
U 1,891,708 December 20, 1932 Insulator Cotter and Mode of Use
Suspension insulator cap and cotter pin permanent assembled that cannot be removed except with a special device
GALLOWAY, Howard L.
Suspension Locke Insulator Corp.
 1930
U 1,759,253 May 20, 1930 Insulator
Suspension insulator assembly with porcelain insulator in compression without the need for cement.
GERHARDT, Roy C.
Suspension  
 1941
U 2,239,809 April 29, 1941 Insulator
Suspension insulator and method of applying RFI coating
BURLESON, Wade H.
RFI The Ohio Brass Co.
 1910
U 947,885 February 1, 1910 Insulator
Suspension insulator and clamp support system
CONE, William S.
Suspension  
 1918
U 1,259,385 March 12, 1918 Suspension Insulator
Suspension insulator (see 1,129,520)
FORTESCUE, Charles Le G.
Suspension Westinghouse Electric & Mfg. Co.
 1910
U 974,672 November 1, 1910 Insulator
Suspension insulator
JOHNSTON, Robert M.
Suspension The Ohio Brass Co.
 1915
D 47,208 April 13, 1915 Design for an Insulator
Suspension insulator
AUSTIN, Arthur O.
Suspension  
 1926
U 1,608,029 November 23, 1926 Insulator
Suspension insulator
LOCKE, Fred M.
Suspension  
 1930
U 1,768,948 July 1, 1930 High Voltage Insulator
Suspension insulator
BAUM, Frank G.
Suspension Westinghouse Electric & Mfg. Co.
 1939
D 114,352 April 18, 1939 Design for an Electric Insulator
Suspension insulator
TAYLOR, John L.
Suspension  
 1927
U Specimen known 1,651,201 November 29, 1927 Insulator
Suspension Hewlett type
GOUVERNEUR, Minor F. H.
Suspension Locke Insulator Corp.
 1929
U 1,708,876 April 9, 1929 Insulator
Suspension Hewlett links made of formed sheet metal
ECKERT, Grandon E.
Suspension The R. Thomas & Sons Co.
 1922
U 1,413,023 April 18, 1922 Method and Means for Forming Passages in Plastic Material
Suspension Hewlett design, method of cutting ring hole
GOUVERNEUR, Minor F. H.
Suspension Locke Insulator Corp.
 1925
U 1,543,779 June 30, 1925 Manufacture of Insulators
Suspension glass insulator with pin molded in the glass
LITTLETON, Jesse T.
FULCHER, Gordon S.
Suspension Corning Glass Works
U 1,542,588 June 16, 1925 Method of Making Suspension Insulators of Glass
Suspension glass insulator with glass pressed around mounting pin
SCHOTT, Erich
Suspension Jenaer Glaswerk Schott & Gen.
 1930
U 1,780,246 November 4, 1930 Glass Insulator and Method of Making Same
Suspension glass Hewlett design with embedded/loose fitting metal brackets
ROWLAND, Davidge H.
Suspension Locke Insulator Corp.
 1935
U 1,994,291 March 12, 1935 Insulator
Suspension for heavy loads with improved cap and pin design; improvement of A. O. Austin patent (see 1,994,265)
SMITH, William A.
Suspension  
 1928
U 1,669,529 May 15, 1928 Insulator
Suspension fog-type with wood strain insulator for connecting to another insulator
MILLER, Frederick H.
Suspension Westinghouse Electric & Mfg. Co.
U 1,664,208 March 27, 1928 Insulator
Suspension fog-type with ceramic covered wood/fiber connecting tube
GILCHREST, George Irving
Suspension Westinghouse Electric & Mfg. Co.
U Specimen known 1,690,291 November 6, 1928 Insulator
Suspension flying saucer type with special link design
GOUVERNEUR, Minor F. H.
Suspension Locke Insulator Corp.
 1922
U 1,412,759 April 11, 1922 Cementless Strain Insulator
Suspension disks connected by circular clamps
STEVENS, Frank J.
Suspension Locke Insulator Corp.
 1929
U 1,728,522 September 17, 1929 Insulator for High Voltage Systems
Suspension disk with strips of high resistance conductive material embedded in the upper surface to produce a uniform distribution of voltage across each disk in a string
BAUM, Frank G.
Suspension Westinghouse Electric & Mfg. Co.
 1917
U Specimen known 1,233,296 July 17, 1917 High Tension Insulator
Suspension disk with petticoats and metal cap with projecting flange
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
 1935
U 2,008,342 July 16, 1935 Insulator
Suspension disk with metal spider cap over crown cemented in porcelain
STROUP, Charles L.
Suspension Jeffery-Dewitt Insulator Co.
 1930
U 1,778,153 October 14, 1930 Insulator Pin Centering Means
Suspension disk with large opening for additional cement around the pin and a means to keep the pin centered
HAWLEY, Kent A.
Suspension Locke Insulator Corp.
 1940
U 2,198,734 April 30, 1940 Insulator
Suspension disk with crown more tempered than skirt for strength
LITTLETON, Jesse T.
Suspension Corning Glass Works
 1919
U 1,291,217 January 14, 1919 Adjustable Suspension Insulator
Suspension disk with adjustable length pin to equalize the potential across each disk to reduce arc-over
SONNEBORN, Sol S.
Suspension  
 1935
U 2,008,341 July 16, 1935 High Tension Insulator
Suspension disk with additional cement in pinhole with asphalt coating
STROUP, Charles L.
Suspension Jeffery-Dewitt Insulator Co.
 1929
U 1,702,236 February 12, 1929 High Tension Insulator Construction
Suspension disk with ""capacity gland"" to prevent electrical streamers and provide a balanced electrical field
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
 1936
U 2,043,523 June 9, 1936 Insulator
Suspension disk using metal malleable liner to aid cement expansion under the metal cap
VAN ATTA, Cloyd B.
Suspension Locke Insulator Corp.
 1934
U 1,975,297 October 2, 1934 Insulator
Suspension disk strengthen by acid etching glass under cap
SHAVER, William W.
Suspension Corning Glass Works
 1927
U 1,645,266 October 11, 1927 Insulator Connector
Suspension disk pin connector and shield around it to compensate for electrostatic field
WAHLBERG, Nils A.
Suspension Westinghouse Electric & Mfg. Co.
 1930
U 1,778,154 October 14, 1930 Cushion for Insulator Pins and Method of Applying
Suspension disk or pin-type pin with asphalt disk at top of pin to cushion strain of pin
HAWLEY, Kent A.
Suspension Locke Insulator Corp.
 1917
U 1,232,278 July 3, 1917 Insulator
Suspension disk cementing method & split, eye-ring pin design
GODDARD, Walter T.
Suspension  
 1914
U Specimen known 1,110,934 September 15, 1914 Insulator
Suspension disk
HEWLETT, Edward M.
Suspension General Electric Co.
 1930
U 1,778,176 October 14, 1930 Insulator
Suspension design using soft metal liner to prevent strain between cap and insulator
VAN ATTA, Cloyd A.
Suspension Locke Insulator Corp.
 1929
U Specimen known 1,716,963 June 11, 1929 Insulator
Suspension coupling device (see 1,329,770)
JOHNSTON, Robert M.
Suspension Jeffery-Dewitt Co.
 1915
U 1,166,394 December 28, 1915 Spool Type Disk Strain Insulator
Suspension composed of ribbed spools made of Electrose
STEINBERGER, Louis
Electrose  
 1912
U Specimen known 1,039,799 October 1, 1912 Insulator Chain for High Pressure Electric Transmission Lines
Suspension chain (pork liver)
PRIESTLEY, Charles M. E.
Suspension Societe Vedovelli Priestley
 1939
U 2,146,344 February 7, 1939 Electric Insulator
Suspension cementing technique to reduce damage from expansion
MEISSE, Louis A.
Suspension The Ohio Brass Co.
 1935
U 2,023,808 December 10, 1935 Shielded Cemented Type Insulator
Suspension cementing procedure using metal cap (disc, J-D type & bus)
HAWLEY, Kent A.
Suspension Locke Insulator Corp.
U 2,008,414 July 16, 1935 Insulator
Suspension cementing procedure
FISCHER, Eugene H.
Suspension  
 1916
U 1,170,287 February 1, 1916 Method of Making Insulators
Suspension cementing method (high temp and humidity)
LAPP, John S.
Suspension Locke Insulator Mfg. Co.
 1928
U 1,657,035 January 24, 1928 Suspension Insulator with Hood and Deformable Pivoting System Forming an Articulated Joint
Suspension cemented pin with pivot joint
RICHARD, Augusto
Suspension  
 1929
U 1,738,188 December 3, 1929 Insulating Support
Suspension cap, pin and connector
LANYON, Samuel Herbert
Suspension Lapp Insulator Co.
 1935
U 2,011,137 August 13, 1935 Insulator
Suspension cap with spring rollers to allow slippage of the cap and cement to improve strength
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
 1919
U 1,305,712 June 3, 1919 Insulator Cap
Suspension cap to receive hook with pin to fin in cap
GODDARD, Walter T.
Suspension  
 1965
U 3,217,095 November 9, 1965 Cast Aluminum Insulator Cap
Suspension cap made of cast aluminum
ROSS, Frank S.
VAN TUYL, Thomas Oliver
Suspension American-International Aluminum Corp.
 1935
U 1,994,265 March 12, 1935 Insulator
Suspension cap design to allow for expansion of the cap without breaking off the insulator head
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
U 1,994,266 March 12, 1935 Insulator
Suspension cap design to allow for expansion of the cap without breaking off the insulator head
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
 1939
U 2,173,292 September 19, 1939 Insulator
Suspension cap design to allow for expansion of the cap without breaking off the insulator head
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
 1917
U 1,238,768 September 4, 1917 Insulator
Suspension cap and pin to improve strength of connection
HILL, Gregory C.
Suspension  
U 1,242,907 October 16, 1917 Insulator
Suspension cap and pin to improve strength of connection
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
 1918
U 1,281,268 October 15, 1918 Insulator
Suspension cap and pin to improve strength of connection
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
 1919
U 1,306,670 June 10, 1919 Insulating Support
Suspension cap and pin to improve strength of connection
LANYON, Samuel H.
Suspension  
U 1,324,559 December 9, 1919 Insulating Support
Suspension cap and pin to improve strength of connection
LANYON, Samuel H.
Suspension  
 1934
U 1,979,092 October 30, 1934 Insulator
Suspension cap and pin designed with slipping cement joints to improve strength
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
U 1,981,717 November 20, 1934 Insulator
Suspension cap and pin designed to improve strength of cement joint
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
 1933
U 1,937,620 December 5, 1933 Insulator
Suspension cap and pin designed to improve and strengthen the cement joint
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
 1911
U Specimen known 1,010,920 December 5, 1911 High Tension Insulator
Suspension cap and pin design using simple locking pin
KENNEY, Benjamin D.
Suspension The R. Thomas & Sons Co.
 1927
U 1,652,506 December 13, 1927 Link-Type Insulator
Suspension bell-shaped link type with special U-shaped cable links
WAHLBERG, Nils A.
Suspension Westinghouse Electric & Mfg. Co.
 1916
U 1,168,031 January 11, 1916 Suspension Type Insulator
Suspension bell-shaped insulators
RANDALL, Karl C.
Suspension Westinghouse Electric & Mfg. Co.
 1925
U 1,521,743 January 6, 1925 Insulator
Suspension arcing horn system and insulator (see 1,552,664 and 1,783,271)
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
U Specimen known 1,552,664 September 8, 1925 Insulator
Suspension arcing horn insulator (see 1,521,743 and 1,783,271)
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
 1988
U 4,782,198 November 1, 1988 Suspension Insulators
Suspension (porcelain) with glazed head for cementing metal cap
MORIYA, Tsutomu
SHINOKUBO, Hiroyuki
Suspension NGK Insulators, Ltd.
 1932
U 1,861,316 May 31, 1932 Insulator
Suspension (Hewlett type) with oil reservoir
MONTANDON, Arthur
Suspension 1/2 to Societe Gen. D'Entr.
 1984
U 4,427,844 January 24, 1984 Metal Capped Electrical Insulator and Method of Making Same
Suspension (glass) where the aluminum alloy cap is molded in place
SABY, Charles
JEANNIN, Serge
PERRIER, Jean-Paul
Suspension Ceraver
 1989
U 4,814,551 March 21, 1989 Anticorrosive Insulator
Suspension (anticorrosive), cementing metal cap for DC service (Japan)
WATANABE, Akihiro
MORI, Shigeo
Suspension NGK Insulators, Ltd.
 1944
U Specimen known 2,350,420 June 6, 1944 Insulator Mounting
Surge porcelain electric fence insulator with drip points and special mounting bracket (see design 126,721) (see design 126,722) [see picture 170540955] (see 2,311,779) (see 2,454,348)
SCHILLING, Lorell J.
Electric Fence Babson Bros. Co.
 1941
D Specimen known 126,721 April 22, 1941 Design for a Strain Insulator
Surge fence knob
SCHILLING, Lorell John
Knob Babson Brothers Co.
D Specimen known 126,722 April 22, 1941 Design for a Line Insulator
Surge fence knob
SCHILLING, Lorell John
Knob Babson Brothers Co.
 1915
U 1,140,582 May 25, 1915 Bracket for Lightning Rod Points
Support or bracket for lightning rod point made of flat copper that can be easily bent for installation
DODD, Thomas W.
Lightning Rod Dodd & Struthers
 1905
U 790,957 May 30, 1905 Insulating Support for Third Rails
Support for third rail with insulating material between the support and the rail.
FARNHAM, Wilson
Third Rail  
 1871
U 121,686 December 5, 1871 Improvement in Sounding Boards for Pianos
Support for piano comprised of three layers of wooden boards
TAYLOR, Edward L.
Piano  
 1889
U 411,749 September 24, 1889 Electric Insulator
Support for overhead wires for electric railways made of a block coated inside with composition material
MCCARTHY, Louis
Composition The Gould & Watson Co. and Charles Tennant Lee
 1959
U 2,912,482 November 10, 1959 Aerial Cable Support and Spacer
Support and spacer for multiple electrical power lines
HORROCKS, Raymond G.
MILLER, Carroll de V.
BRENNER, Theodore J.
Spacer PLM Products, Inc.
 1958
U 2,857,505 October 21, 1958 Method of welding TV tube studs
Stud Welding Apparatus
SMITH, Ralph H.
OI Owens-Illinois Glass Co.
 1893
U 508,068 November 7, 1893 Lightning Conductor
Strong, durable lightning rod easily attached to a building with conductor passing through the hollow casing (also patented in England, Switzerland, Belgium, Italy, Spain, France)
WALCH, Gustav Theodor
Lightning Rod  
 1948
U 2,454,677 November 23, 1948 Secondary Rack
Strong secondary rack bracket that is shorter yet easily bolted in place.
SMALLEY, Burt M.
Bracket/secondary Rack Joslyn Mfg and Supply Co.
 1911
U 1,011,652 December 12, 1911 Strain Insulator
Strain, ribbed made of Electrose
STEINBERGER, Louis
Strain  
 1912
U 1,046,868 December 10, 1912 Strain Insulator
Strain, interlocking type with ribs and metal connectors
SCHMID, Ernest Emmel
Strain Shield Electric Co.
U Specimen known 1,048,992 December 31, 1912 Insulator
Strain, interlocking type (OB hog liver)
MEAD, George A.
Strain The Ohio Brass Co.
 1918
U Specimen known 1,284,974 November 19, 1918 Strain Insulator
Strain, guy insulator attachment
AUSTIN, Arthur O.
Strain The Ohio Brass Co.
 1911
U 1,000,535 August 15, 1911 Insulator
Strain, ball with eye-loops on each end
MCCARTHY, Louis
Strain  
 1898
U 605,741 June 14, 1898 Strain Insulator
Strain, adjustable insulator of composition & iron (Brown p. 30)
MCCARTHY, Louis
Strain  
 1917
U Specimen known 1,216,000 February 13, 1917 Electrical Insulator
Strain with drain holes
SCULLY, Thomas
Strain  
 1891
U 445,790 February 3, 1891 Insulator
Strain type with ramshorn ends
WINTON, Henry D.
Strain  
 1900
U Specimen known 650,445 May 29, 1900 Insulator
Strain type with ""Z"" shaped groove
ZERTUCHE, Emilio
Strain  
 1894
U 530,498 December 11, 1894 Insulator for Electric Overhead Construction
Strain type ball shaped
BALL, Henry Price
Strain General Electric Co.
 1929
U 1,707,054 March 26, 1929 Insulator
Strain type (impractical)
DOELTER, Otto
Strain  
 1886
U 352,436 November 9, 1886 Electric Insulator
Strain type
WINTON, Henry D.
Strain  
U 352,437 November 9, 1886 Electric Insulator
Strain type
WINTON, Henry D.
Strain  
 1891
U 459,686 September 15, 1891 Insulator
Strain type
GERRARD, Clarence L.
Strain  
 1892
U 467,941 February 2, 1892 Insulator
Strain type
LEE, Charles T.
Strain 1/2 to The Gould & Watson Co.
U 474,319 May 3, 1892 Insulator
Strain type
GOODRICH, Charles F.
Strain 1/2 to John G. Thompson
U 482,872 September 20, 1892 Insulator
Strain type
LEE, Charles T.
Strain The Johns-Pratt Co.
U 488,046 December 13, 1892 Insulator
Strain type
WIRT, Charles
Strain  
 1893
U 489,658 January 10, 1893 Strain Insulator
Strain type
MCCARTHY, Louis
Strain  
 1894
U 515,779 March 6, 1894 Strain Insulator
Strain type
LUSCOMB, Henry H.
Strain The Johns Pratt Co.
 1912
U 1,028,104 June 4, 1912 Strain Insulator
Strain type
FLETCHER, Olive L.
Strain The Peru Electric Mfg. Co.
 1908
U Specimen known 905,141 December 1, 1908 Insulator
Strain similar to CD 1130, CD 1131, CD 1138, CD 1140, CD 1142 but with intersecting grooves
BOGUE, Lawrence L.
Insulator  
 1922
U 1,403,717 January 17, 1922 Insulator
Strain or suspension in compression
STEINBERGER, Louis
Electrose  
 1916
U 1,206,159 November 28, 1916 Safety Strain Disk Insulator
Strain made of Electrose with special interlocking links
STEINBERGER, Louis
Strain  
 1927
U 1,654,047 December 27, 1927 Strain Insulator
Strain insulator with steel covering whereby the porcelain insulator is in compression
LAPP, John S.
Strain Lapp Insulator Co.
 1932
U 1,873,750 August 23, 1932 Insulator Structure
Strain insulator with parts coated and metal fitting soldered to the coating
FORTESCUE, Charles Le G.
Strain Westinghouse Electric & Mfg. Co.
 1923
U 1,458,756 June 12, 1923 Strain Insulator
Strain insulator with improved method of connecting the metal caps
GODDARD, Walter T.
Strain Locke Insulator Corp.
 1908
U 904,069 November 17, 1908 Insulator
Strain insulator to electrically disconnect the circuit. (see reissue 13,526)
KEMPTON, Williard H.
Strain The Johns-Pratt Co.
 1907
U Specimen known 869,403 October 29, 1907 Strain Insulator
Strain insulator made of a ball with two loop connectors
ANDERSON, Albert
Strain Albert & J M Anderson Mfg. Co
U Specimen known 869,404 October 29, 1907 Strain Insulator
Strain insulator made of a ball with two loop connectors
ANDERSON, Albert
Strain Albert & J M Anderson Mfg. Co
 1937
U 2,093,875 September 21, 1937 Strain Insulator
Strain insulator for radio antennas
STEVENS, Leland James
Strain Locke Insulator Corp.
 1924
U 1,498,622 June 24, 1924 Strain Insulator
Strain insulator for high tension lines that is strong and lightweight
GODDARD, Walter T.
Strain Locke Insulator Corp.
 1925
U 1,555,289 September 29, 1925 Insulator
Strain insulator connecting hardware
JACKSON, Ray P.
Strain Westinghouse Electric & Mfg. Co.
 1930
U 1,782,790 November 25, 1930 Insulator
Strain insulator composed of a wooden strain sealed inside porcelain tubular shell that is filled with non-conducting oil
MILLER, Frederic H.
JACKSON, Ray P.
Strain Westinghouse Electric & Mfg. Co.
 1908
U 896,934 August 25, 1908 Insulator
Strain insulator (assigned to Westinghouse) (see article 12236)
NIKONOW, John P.
Strain  
 1895
U 535,660 March 12, 1895 Insulator
Strain in the shape of a ball
BELCHER, Warren J.
Strain The Billings & Spencer Co.
 1925
U 1,524,407 January 27, 1925 Insulator for Suspended High Tension Electric Wires
Strain for horizontal with cupped ends with downward drip edges
RENAUDIN, Alfred
Strain  
 1928
U 1,688,011 October 16, 1928 Insulator
Strain for guy wires with special wire connecting links
GOUVERNEUR, Minor F. H.
Strain Locke Insulator Corp.
U 1,688,015 October 16, 1928 Insulator
Strain for guy wires with special wire connecting links
GOUVERNEUR, Minor F. H.
Strain Locke Insulator Corp.
 1924
U 1,509,279 September 23, 1924 Strain Insulator
Strain for guy wires using special connecting hardware
AUSTIN, Arthur O.
Strain The Ohio Brass Co.
 1902
U 706,194 August 5, 1902 Insulator
Strain composed of a ball of composition material with metal members embedded in the ball
MCCARTHY, Louis
Strain  
 1892
U Specimen known 476,828 June 14, 1892 Circuit Breaking Insulator
Strain circuit breaking insulator. Patent was owned by Pass & Seymour.
SEYMOUR, Albert P.
Strain  
 1917
U 1,217,508 February 27, 1917 Insulator
Strain and suspension with special metal links for superior strength
SCHAAKE, William
Strain/suspension Westinghouse Electric & Mfg. Co.
 1894
U 524,850 August 21, 1894 Insulator
Strain and hanger block
HAMMOND, Charles N.
Strain  
 1913
D Specimen known 44,118 May 27, 1913 Design for an Insulator
Strain
WHITE, Thomas C.
Strain  
 1914
D Specimen known 45,172 January 20, 1914 Design for an Insulator
Strain
WHITE, Thomas C.
Strain  
D Specimen known 46,014 June 30, 1914 Design for an Insulator
Strain
AUSTIN, Arthur O.
Strain  
D 46,243 August 11, 1914 Design for an Insulator
Strain
BUNDY, Clifton L.
Strain  
D Specimen known 46,451 September 22, 1914 Design for an Insulator
Strain
SCHAAKE, William
Strain Westinghouse Electric & Mfg. Co.
 1916
D Specimen known 49,365 July 11, 1916 Design for a Strain Insulator
Strain
MULLER, Henry N.
Strain  
 1918
D Specimen known 52,139 July 2, 1918 Design for a Strain Insulator
Strain
KENDIG, Julian H.
Strain  
 1919
D Specimen known 53,522 July 8, 1919 Design for an Insulator
Strain
PIERCE, JR., Charles L.
Strain 1/2 to Hubbard & Co.
 1920
D Specimen known 56,262 September 14, 1920 Design for an Insulator
Strain
AUSTIN, Arthur O.
Strain The Ohio Brass Co.
 1921
D Specimen known 59,947 December 13, 1921 Design for an Insulator
Strain
AUSTIN, Arthur O.
Strain The Ohio Brass Co.
 1905
U 800,935 October 3, 1905 Electric Wire Tower
Steel tower composed of triangular structure
NOYES, La Verne W.
Tower  
 1936
U 2,032,017 February 25, 1936 Sheet Metal Insulator Support Pin and Method of Making the Same
Steel sheet metal pin easily manufactured
HOCHER, Andrew A.
LASHER, Marshall
Pin Hubbard and Co.
 1921
U 1,381,838 June 14, 1921 Insulator Support
Steel pins for crossarm made from one metal rod integral to the wooden crossarm and acts a braces for the crossarm.
JACKSON, Berry B.
Pin  
 1933
U 1,911,031 May 23, 1933 Insulator Support
Steel pin, support base, and threads made of a spring coil
MILLER, Charles E.
Pin Hubbard & Co.
 1932
U 1,880,766 October 4, 1932 Support for Insulators
Steel pin with waterproof fiber threads and cone cover
BURKE, Edmund
Pin Brown Company
 1933
U 1,911,558 May 30, 1933 Insulator Pin
Steel pin with threads made of a spring coil
DRIGGS, Lorenzo J.
Pin Frank F. Winters
 1952
U 2,592,698 April 15, 1952 Insulator Supporting Pin and Cob
Steel pin with threaded cob made of cellulose acetate butyrate molded into threads (see reissue 23,885 on 10-5-1954)
HUBBARD, David C.
Pin A. B. Chance Co.
 1954
R 23,885 October 5, 1954 Insulator Supporting Pin and Cob
Steel pin with threaded cob made of cellulose acetate butyrate molded into threads (reissue of 2,592,698)
HUBBARD, David C.
Pin A. B. Chance Co.
 1930
U 1,750,770 March 18, 1930 Insulator Pin
Steel pin with supporting base that fits over top and edge of wooden crossarm
AUSTIN, Arthur O.
Pin The Ohio Brass Co.
 1932
U 1,863,539 June 14, 1932 Pole Top Pin
Steel pin with strap to attach to top of pole
HAWLEY, Kent A.
Pin Locke Insulator Corp.
 1931
U 1,807,878 June 2, 1931 Insulator Supporting Post
Steel pin with sheet metal threads
SEYLER, Carl P.
Pin  
 1944
U 2,345,404 March 28, 1944 Reinforced Insulator Pin
Steel pin with sheet metal reinforcing down to crossarm to provide bracing against horizontal strain
MACK, Edward A.
Pin Oliver Iron & Steel Corp.
 1931
U 1,829,926 November 3, 1931 Insulator Pin
Steel pin with saddle that fits over a curved-top crossarm
HAWLEY, Kent A.
Pin Locke Insulator Corp.
 1928
U Specimen known 1,690,596 November 6, 1928 Insulator Pin
Steel pin with saddle and U-bracket to secure to the crossarm
SEYLER, Carl P.
Pin  
 1930
U 1,750,769 March 18, 1930 Insulator Pin
Steel pin with rolled threads and support on top of crossarm
AUSTIN, Arthur O.
Pin The Ohio Brass Co.
 1904
U 758,179 April 26, 1904 Supporting Pin for Line Insulators
Steel pin with porcelain base and metal cap
HILLIARD, JR., John D.
Pin  
 1929
U 1,715,507 June 4, 1929 Insulator Mounting
Steel pin with malleable threaded thimble and coil spring for threads to contact the insulator pinhole
KYLE, William D.
Pin Line Material Co.
 1934
U 1,960,681 May 29, 1934 Insulating Support Pin
Steel pin with malleable thread thimble with limited contact with the pin to aid in cushioning insulator
PEIRCE, JR., Charles L.
Pin 1/2 to Hubbard & Co.
 1921
U 1,385,638 July 26, 1921 Supporting Bracket
Steel pin with lag screw and spring for threads
MILLER, Charles E.
Pin  
 1926
U 1,591,883 July 6, 1926 Insulator Pin
Steel pin with lag screw and spring for threads
PEIRCE, JR., Charles L.
Pin  
 1884
U 297,677 April 29, 1884 Device for Attaching Telegraph Wires to Posts and Insulating Them Therefrom
Steel pin with lag screw and holder for insulator
COTTRELL, Herbert
Pin  
 1941
U 2,260,917 October 28, 1941 Insulator Pin
Steel pin with flanges to fit in top and bottom of hole drilled for larger wooden pins
RUGGIERI, Michael
Pin Line Material Co.
 1918
U 1,258,816 March 12, 1918 Insulator Pin
Steel pin with conical support base that fits in grooved steel base that fits over the top of the crossarm
ROSENFELD, Mortimer C.
Pin  
 1907
U 851,577 April 23, 1907 Cross Arm Pin
Steel pin with clips at the bottom to secure the pin and ribs at the top to prevent turning
WEAVER, David
Pin  
 1928
U 1,657,340 January 24, 1928 Insulator Pin
Steel pin with base support on crossarm
AUSTIN, Arthur O.
Pin The Ohio Brass Co.
U 1,657,341 January 24, 1928 Insulator Pin
Steel pin with base support on crossarm
AUSTIN, Arthur O.
Pin The Ohio Brass Co.
 1907
U 873,700 December 10, 1907 Rotating Bracket for the Suspension of Electric Wires
Steel pin that will swing horizontally when line wire is brushed by movement of tree limbs
BUCKBEE, Charles E.
Pin  
 1905
U 783,230 February 21, 1905 Insulator Support
Steel pin supporting Electrose cover composed of threads and gutter at the bottom for transmitting water away from pin
STEINBERGER, Louis
Pin  
 1942
U 2,297,600 September 29, 1942 Insulator Support
Steel pin for carrier circuits with threads coated with rubber
WILLIAMS, Richard H.
Pin The B. F. Goodrich Co.
 1926
U 1,603,003 October 12, 1926 Fixing Means for Bolts
Steel pin designed with flanges on top and bottom of hole bored in crossarm to keep out water
ENNIS, William F.
Pin  
 1933
U 1,912,007 May 30, 1933 Insulator Pin
Steel pin and externally threaded steel cone support securely mounted to the crossarm
PLIMPTON, Bentley A.
HAWLEY, Kent A.
Pin Locke Insulator Corp.
 1925
U 1,525,229 February 3, 1925 Means for Mounting Insulator Pins
Steel pin and bracket for mounting on a crossarm with a clamping system not dependent on the size of the crossarm
COTTON, Charles S.
Pin  
 1926
U 1,586,642 June 1, 1926 Insulator Pin
Steel pin and bracket combination stamped out of sheet metal and bolted around the crossarm
ARNDT, John P.
Pin  
 1928
U 1,670,429 May 22, 1928 Pin for Insulators
Steel pin and bracket combination stamped out of sheet metal and bolted around the crossarm
ARNDT, John Philip
Pin  
U 1,690,392 November 6, 1928 Insulator Pin
Steel insulator pin
AUSTIN, Arthur O.
Pin The Ohio Brass Co.
 1914
U 1,122,030 December 22, 1914 Suspension Insulator Eyebolt
Steel eyebolt pin for suspension insulators
STANFORD, JR., Joseph Addison
Suspension The R. Thomas & Sons Co.
 1906
U 838,537 December 18, 1906 Cross Arm for Electrical Construction
Steel crossarm with threaded pins on top and threaded holes underneath for hooks
HAMILTON, Evlyn S.
Crossarm  
 1937
U 2,082,566 June 1, 1937 Connector
Steel connector for strain, suspensions, and other insulators
BERNDT, Arthur A.
Connector Electroline Corp.
 1932
U 1,841,949 January 19, 1932 Insulator With Caps
Steel cap cemented to top of insulator with bolts for stacking insulators
HAWLEY, Kent A.
Miscellaneous Locke Insulator Corp.
 1911
U 1,000,389 August 15, 1911 Insulator Bracket
Steel bracket that fits around the crossarm
ETTE, Charles G.
Bracket Ette Investment Co.
 1909
U Specimen known 928,010 July 13, 1909 Cross Arm Fitting and Insulator Support
Steel bracket that fits and clamps around the crossarm, specimens manufactured by St. Louis Malleable Casting Co., St. Louis, MO
WAY, Sylvester B.
Bracket  
 1929
U 1,740,641 December 24, 1929 Pole Top Pin for Multiple Construction
Steel bracket for pole top that supports insulator pin on side of pole when conductor is under stress
AUSTIN, Arthur O.
Bracket The Ohio Brass Co.
U 1,714,814 May 28, 1929 Pole Bracket
Steel bracket for pole top that supports insulator pin on side of pole
PLIMPTON, Bentley A.
Bracket Locke Insulator Corp.
 1915
U 1,147,065 July 20, 1915 Insulator Clamp and Bracket
Steel bracket and pin combination that fits around the crossarm
ZIEG, Joseph
Bracket  
 1869
U 92,551 July 13, 1869 Improvement in Lightning Rods
Star shaped lightning rod made of 4-edged angle iron with a sheet of copper pressed over the outer surface and then twisted (see reissue 8,429)
VERMILYA, Leland D.
REYBURN, William S.
HUNTER, Edmund A. W.
Lightning Rod  
 1878
R 8,429 September 24, 1878 Improvement in Lightning Rods
Star shaped lightning rod made of 4-edged angle iron with a sheet of copper pressed over the outer surface and then twisted (see 92,551)
VERMILYA, Leland D.
REYBURN, William S.
HUNTER, Edmund A. W.
Lightning Rod Rights of Vermilya to Reyburn, Hunter, and Byron P. Moulton
 1938
D Specimen known 108,489 February 15, 1938 Design for an Electric Insulator
Standard Porcelain No. 57
DALTON, Rolland E.
Knob Porcelain Products, Inc.
 1902
U Specimen known 701,848 June 10, 1902 Insulator
Stacking glass sections with sections fused or cemented together
CONVERSE, Vernon G.
Stack Hemingray ????
U 705,811 July 29, 1902 Insulating Support for Metallic Circuits
Stacked multiple insulators to support wire
ALLEN, John S.
Stack  
U 693,603 February 18, 1902 Third Rail Insulator for Electric Railways
Square third rail insulator with metal foot and metal cap that fit in a square hole in top and bottom of the insulator.
HOBBS, Charles M.
Third Rail 1/2 to Harold P. Brown
 1920
U 1,345,987 July 6, 1920 Cushion Support
Square of layered rubber with depression in the center to hold caster wheel from movement
BOCKING, Frederick William
Piano  
 1916
D 49,204 June 20, 1916 Design for an Insulator Body
Square insulator with larger square flange on top and threaded opening in top for bolt
CLINE, Jerome G.
Misc  
 1870
U 99,381 February 1, 1870 Improvement in Lightning Rods
Square hollow lightning rod connected with square plug that fits inside the ends and secured by crimping with a punch
WEST, J. D.
Lightning Rod  
 1893
D 22,876 November 7, 1893 Design for an Insulator
Square flat insulator with large center hole and small hole in each corner
WRIGHT, Augustus
Misc  
 1939
D 115,432 June 27, 1939 Design for a Hollow Glass Building Block
Square block design with quarter circle concave ridges
SUTTER, John H.
OI Owens-Illinois Glass Co.
 1936
D 99,076 March 24, 1936 Design for a Glass Building Block
Square block design with diamond lines and fine mesh
EASTUS, Harold L.
OI Owens-Illinois Glass Co.
 1928
U 1,657,922 January 31, 1928 Method of Assembling Insulators
Sprayed coating of metal or asphalt with heat treatment to improve cement joint
GODDARD, Walter T.
Cement Locke Insulator Corp.
 1886
U 346,971 August 10, 1886 Telegraph Insulator
Spout each end of groove for rain; barbed top groove; hole for tie wire
WILSON, John
Spout  
 1935
U 2,024,831 December 17, 1935 Insulator
Spool type wireholder and lag screw bracket
MEYER, Edwin M.
Wireholder Porcelain Products, Inc.
 1911
U 1,000,493 August 15, 1911 Insulator for Electric Railway Cars
Spool type insulator to suspend electrical equipment from electric train cars
CHRISTENSEN, John
Miscellaneous  
 1950
U 2,533,621 December 12, 1950 Electric Insulator
Spool type electric fence insulator with ribs and flat area for metal bracket to attach.
PRATT, Elbert H.
CHRISTIE, Ralph C.
Electric Fence  
 1942
U Specimen known 2,286,488 June 16, 1942 Spool Insulator
Spool insulator with deep side groove
JOHNSON, Lewis E.
Spool Porcelain Products, Inc.
 1884
U 298,594 May 13, 1884 Terminal Insulator
Spool (skirted) with bracket to act as terminal wire support
LEWIS, Joseph Slater
Spool 1/2 to William P. Thompson
 1890
U 419,642 January 21, 1890 Insulator for Electric Wires
Split ring with split ring holder and lag screw
CORNOG, Isaac P.
Split  
 1907
U 870,486 November 5, 1907 Conducting Wire Support and Insulator
Split insulator with external threads to screw into hole in crossarm to hold line wire
WISTNER, Harvey W.
Miscellaneous  
 1905
U 793,313 June 27, 1905 Insulator
Split insulator to hold wire in the center hole and split bracket to hold insulator above crossarm to prevent line wire from dropping if insulator breaks
MOSS, Bertie B.
Miscellaneous Leander G. Davis and Milton Hottel
 1884
U 295,073 March 11, 1884 Telegraph Wire Supporter
Split insulator that fits around conductor and connected to adjacent split insulator with tie-wire
STONE, Ross C.
Miscellaneous  
 1870
U 109,879 December 6, 1870 Improvement in Insulators for Telegraph Wires
Split insulator protected by metal cage
DE MONTUFAR, Manuel
Split  
 1885
U 314,385 March 24, 1885 Holder for Lightning Rods
Split holder for lightning rods
LAWSHE, Spencer R.
Lightning Rod Theodore H. Patee
 1905
U 806,769 December 12, 1905 Adjustable Support for Telegraph Line Wires
Split cylinder of wood insulator for spacing line wires with external spiral grooves for receiving spiral of wire to hold the halves together and attach to insulator on adjacent wires
BELL, Jasper N.
Wood  
 1909
U 930,751 August 10, 1909 Reinforced Wooden Support for Insulators
Splash preventor horizontal on pin under insulator
GRAHAM, Charles M.
Splash  
 1957
U 2,776,332 January 1, 1957 Self-Cleaning Outdoor High Tension Insulators
Spiral or helical side petticoats that are washed by rain
VON CRON, Hans
Spiral Siemens-Schuckertwerke Aktiengesellschaft
 1913
U 1,065,737 June 24, 1913 Insulator and Support
Spiral conical insulator for tightening of line wire
SLONECKER, Abiram J.
Spiral  
 1926
U 1,574,964 March 2, 1926 Insulation Equipment
Special insulator design for bus bar and equipment support (see 1,274,555 and 1,663,007)
GETTS, Frank E.
Insulator Electrical Engineers Equipment Co.
 1935
U 1,994,292 March 12, 1935 Insulator
Special design of pin for suspension insulator
TAYLOR, John J.
Suspension The Ohio Brass Co.
U 1,997,439 April 9, 1935 Insulator
Special design of cemented pin and cap on pin-type insulator used to support electrical equipment
TAYLOR, John J.
Miscellaneous The Ohio Brass Co.
 1923
U 1,474,256 November 13, 1923 Insulator
Special columnar insulators to support structure for a radio transmitter
GODDARD, Walter T.
Radio Locke Insulator Corp.
 1912
U 1,036,136 August 20, 1912 Tool for Stringing Line Wires
Special bracket that fits around the insulator and crossarm to loosely hold the line wire during stringing and before the line is tied to the insulator
MENAGER, Henry A.
Bracket 91/100 to John A. Menager
 1960
U Specimen known 2,921,112 January 12, 1960 Electric Conductor Strand Separator Insulator
Spacer for conductors
DYKSTRA, Laurence J.
GRILLS, Lee J.
Spacer The Porcelain Insulator Corp.
 1881
U 243,513 June 28, 1881 Device for Deadening Sound Vibrations of Telegraph Wires
Sound deadening device to prevent humming of telegraph wires
CONNOR, Paul D.
Miscellaneous  
 1867
U 70,132 October 22, 1867 Improvement in Telegraph Insulators
Slotted, flanged insulator in slot in crossarm
TELLER, Daniel W.
SAVAGE, William L.
Slotted Themselves and W. H. Hoag
 1885
U 328,728 October 20, 1885 Insulator
Slotted tubular insulator for crossovers
SMITH, Leonard O.
Slotted  
 1884
U 303,483 August 12, 1884 Insulator
Slotted spherical insulator supported by box & screw to hold wire
BAILEY, Charles De Roy
Slotted  
 1874
U 154,258 August 18, 1874 Improvement in Telegraph Insulators
Slotted insulator to hold wire
LE BARON, Charles L.
Slotted  
 1876
U 183,865 October 31, 1876 Improvement in Telegraph Insulators
Slotted glass pin to hold wire and cap screwed to secure wire
REYNOLDS, David M.
Slotted James M. Brookfield
 1860
U 28,263 May 15, 1860 Improved Insulator for Electrodes
Slotted enameled iron ring for holding electrodes
ENGLER, Louis
KRAUSS, Ernest F.
Slotted  
 1880
U 234,523 November 16, 1880 Telegraph Insulator
Slotted circular insulator held by split metal screw bracket
BIGEON, Charles
Slotted  
 1874
U 149,763 April 14, 1874 Improvement in Telegraph Insulators
Slotted block to hold wire held to pole with unique pin
LE BARON, Charles L.
Slotted  
 1875
U 161,058 March 23, 1875 Improvement in Insulating Blocks for Telegraph Lines
Slotted block to hold several wires
PIDGEON, George S.
Slotted  
 1884
U 303,399 August 12, 1884 Electric Wire Insulator
Slotted block insulator to hold wire with a tie
PRINCE, George W.
Slotted  
 1896
U 573,101 December 15, 1896 Wall Insulator
Slack wire ring driven into mortar between bricks
O'NEILL, James J.
Slack Wire  
 1901
U 679,308 July 30, 1901 Insulator
Slack wire knob, bracket and suspension clip
GEISENHONER, Henry
Slack Wire General Electric Co.
U 667,103 January 29, 1901 Insulator
Slack wire knob with metal suspension clip
SARGENT, Howard R.
Slack Wire General Electric Co.
 1908
U 907,834 December 29, 1908 Insulator
Slack wire holder with nail spike
MARSHALL, George B.
Slack Wire  
 1926
U 1,596,931 August 24, 1926 Insulator
Slack wire cylindrical insulator and mounting clip
JOYCE, Bryan P.
Slack Wire  
 1958
U 2,851,973 September 16, 1958 Skylight Construction
Skylights made of glass block
STARK, Charles H.
LENKE, George H.
OI Owens-Illinois Glass Co.
 1957
U 2,812,690 November 12, 1957 Skylights
Skylight utilizing glass block
BOYD, Robert A.
OI Owens-Illinois Glass Co.
U 2,812,691 November 12, 1957 Skylights
Skylight utilizing glass block
BOYD, Robert A.
OI Owens-Illinois Glass Co.
 1939
U 2,182,971 December 12, 1939 Skylight or Floorlight Construction
Skylight construction using glass blocks
RICHARDS, Joshua M.
OU  
 1940
U 2,198,450 April 23, 1940 Light Transmitting Structure
Skylight construction using glass blocks
CHERTKOF, Jack O.
OU  
 1962
U 3,026,575 March 27, 1962 Skylight Structure and Method of Fabrication
Sklight made of glass blocks
LUSHER, Kenneth G.
MCDAVITT, Murray
VINCENT, Harvard B.
OI Owens-Illinois Glass Co.
 1932
U 1,854,459 April 19, 1932 Insulator
Skirts upturned with drain holes
DIENNER, John A.
Skirt  
 1904
U 776,789 December 6, 1904 Insulator
Skirts are horizontal
LOCKE, Fred M.
Skirt  
 1905
U 806,717 December 5, 1905 High Voltage Insulator
Skirt (inner) cemented to insulator & extending to crossarm
THOMAS, George W.
Skirt The R. Thomas & Sons Co.
 1906
U 822,211 May 29, 1906 Insulator
Skirt (bottom) upper end nearly flat with porcelain cap resting on same
LOCKE, Fred M.
Skirt  
 1928
U 1,696,491 December 25, 1928 Insulator Rack
Simply constructed secondary rack without the base and other parts. Just composed of rods to hold the spool insulators and fastening bracket.
KYLE, William D.
Bracket/secondary Rack Line Material Co.
 1931
U 1,799,470 April 7, 1931 Secondary Rack
Simply constructed secondary rack without the base and other parts. Just composed of rods to hold the spool insulators and fastening bracket.
KYLE, William D.
Bracket/secondary Rack Line Material Co.
 1932
U 1,873,434 August 23, 1932 Supporting Fixture
Simply constructed secondary rack with detachable spool insulators.
LEMONT, Clarence J.
Bracket/secondary Rack Line Material Co
 1935
U 2,016,470 October 8, 1935 Secondary Rack and the Process of Making Same
Simple secondary rack construction to reduce cost.
WHITE, Leonard H.
Bracket/secondary Rack Line Material Co.
 1963
U 3,093,508 June 11, 1963 Method of Coating Glass
Silicone coated glass that can be used for insulators
WARTENBERG, Erwin W.
Glass Coating  
 1912
U 1,048,706 December 31, 1912 Bracket for Current Conducting Wires
Side pin with notch cut out to allow a splice to pull through before mounting wire on the glass insulators
KLEINHESSELINK, Arie
Pin  
 1911
U 992,462 May 16, 1911 Insulator
Shield acting as a roof over the insulator
WEICKER, William
Shield Porzellanfabrik Kahla, Filiale Hermsdorf Klosterlausnitz
 1878
U 204,257 May 28, 1878 Improvement in Lightning Conductors
Sheet metal strips connecting lightning rods to gutters
SPANG, Henry W.
Lightning Rod Conductor  
 1924
U 1,505,537 August 19, 1924 Machine for Forming Glass Articles
Severing and delivering glass from a continuous flow. Press for making glass insulators
BROOKFIELD, Henry M.
Press Brookfield Glass Co.
 1942
U 2,296,679 September 22, 1942 Service Drop Insulator
Service drop bracket and insulator to tie-off multiple service lines from one main conductor
MACK, Edward A.
Service Drop Line Material Co.
 1939
U 2,143,696 January 10, 1939 Apparatus for Assembling Hollow Building Blocks
Semi automatic method for assembling glass blocks
HOLMES, Minot K.
JONES, David
OI Owens-Illinois Glass Co.
 1892
U Specimen known 479,134 July 19, 1892 Insulator
Self-typing nail-knob with arm that secures the wire
CONOVER, Chauncey E.
Knob  
 1884
U 293,901 February 19, 1884 Lock Wire Insulator
Self-tying with slotted crown (Electrical World 10-18-1884)
MCGRORY, Thomas
Self-tying Miscellaneous  
 1902
U 712,440 October 28, 1902 Insulator
Self-tying with slot and screw clamp
SHREFFLER, James L.
Self-tying Miscellaneous  
 1909
U 922,477 May 25, 1909 Electric Line Insulator
Self-tying with side grooves
HENRY, Robert
Self-tying Miscellaneous  
 1886
U 347,454 August 17, 1886 Telegraph Wire and Insulator Fastening
Self-tying with retainer for holding wire in groove
WILSON, John
Self-tying Miscellaneous  
 1905
U 789,573 May 9, 1905 Insulator
Self-tying with metal screw plug in top of crown
STEINBERGER, Louis
Self-tying Miscellaneous  
 1894
U Specimen known 522,175 June 26, 1894 Insulator
Self-tying with metal cap screws down on two metal ears to hold wire
ANDERSEN, Johan M.
Self-tying Miscellaneous 1/2 to Albert Anderson
 1886
U 347,943 August 24, 1886 Insulator for Electric Wires
Self-tying with metal cam lever
LEONARDSON, John M.
Self-tying Miscellaneous  
 1887
U 375,276 December 20, 1887 Insulator
Self-tying with J slot and cap
EMERY, Edward C.
Self-tying Miscellaneous  
 1891
U 463,955 November 24, 1891 Electric Wire Insulator
Self-tying with fingers
NEWELL, Hiram F.
Self-tying Miscellaneous  
 1895
U 546,383 September 17, 1895 Insulator
Self-tying with crown hole, slot & spacer
GERSTENLAUER, Daniel M.
Self-tying Miscellaneous  
 1906
U 829,646 August 28, 1906 Insulator
Self-tying with crown clamp on multipart
GODDARD, Walter T.
Self-tying Miscellaneous Locke Insulator Mfg. Co.
 1907
U 872,216 November 26, 1907 Insulator
Self-tying with cam lever
BODLEY, Homer D.
Self-tying Miscellaneous  
 1889
U 408,383 August 6, 1889 Line Wire Insulator
Self-tying with bail wire and slot top
GRAHAM, Carroll G.
Self-tying Miscellaneous  
 1945
U 2,386,129 October 2, 1945 Self-Attaching Wire Holder
Self-tying wireholder mounted on metal bracket
MAACK, Walter Henry
Wireholder/self-typing  
 1911
U 980,495 January 3, 1911 Wire Retainer and Insulator Guard
Self-tying via wire retainer & insulator guard
CRAWFORD, JR., George W.
Self-tying Miscellaneous  
 1907
U 844,796 February 19, 1907 Insulating Wire Holder
Self-tying via spiral slot
HATCHETT, Andrew
Self-tying Miscellaneous 1/3 to Battiste, 1/3 to Porter
U 865,697 September 10, 1907 Insulator
Self-tying via side slot
HENDERSON, Robert E.
KING, John N.
Self-tying Miscellaneous 1/4 to Williams, 1/4 to James King
 1915
U 1,149,017 August 3, 1915 Insulator
Self-tying via side slot
BALLIET, Ray
Self-tying Miscellaneous  
 1910
U 970,078 September 13, 1910 Insulator
Self-tying via side mounted device
MEURLING, John A.
Self-tying Miscellaneous  
 1916
U 1,177,315 March 28, 1916 Insulator
Self-tying via side fingers
GEE, Warn George
Self-tying Miscellaneous 1/2 to W. A. Snapp
 1924
U 1,516,884 November 25, 1924 Wireless Tie Insulator
Self-tying via side fingers
FREDERICK, Harry A.
Self-tying Miscellaneous  
 1903
U 746,671 December 15, 1903 Insulator
Self-tying via pivoted locking dogs
CARTER, Taylor
Self-tying Miscellaneous  
 1891
U 448,956 March 24, 1891 Electric Insulator
Self-tying via metal band screwed on top
GRAHAM, George H.
GANNANE, Thomas
Self-tying Miscellaneous  
 1894
U 515,448 February 27, 1894 Fixing Electric Conducting Wires to Insulators Supporting Same
Self-tying via hole through insulator crown & metal clamp
SCHOMBURG, Rudolf
Self-tying Miscellaneous  
 1923
U 1,470,322 October 9, 1923 Wireless Tie Insulator
Self-tying via fingers
FREDERICK, Harry A.
Self-tying Miscellaneous  
 1907
U 866,596 September 17, 1907 Insulator
Self-tying via cylindrical slot with screw threads
MORTON, William A.
Self-tying Miscellaneous  
 1914
U 1,090,686 March 17, 1914 Insulator Clamp
Self-tying via clamp
COOK, William A.
Self-tying Miscellaneous  
 1870
U 99,873 February 15, 1870 Improvement in Insulator for Telegraphs
Self-tying via cam devise to hold wire with cap covering
FINLEY, Stephen L.
Self-tying Miscellaneous 1/2 to Marshall Lefferts
 1886
U 346,972 August 10, 1886 Telegraph Insulator
Self-tying via bolt in crown
WILSON, John
Self-tying Miscellaneous  
U 349,022 September 14, 1886 Telegraph Wire and Insulator Fastening
Self-tying via a spiral of wire that fits in the top groove or notch holding the line wire within
WILSON, John
Self-tying Miscellaneous  
 1885
U 332,061 December 8, 1885 Telegraph Insulator
Self-tying two piece combination insulator and pin
DEBLIEUX, Benjamin Noel
Self-tying Miscellaneous  
 1906
U 834,567 October 30, 1906 Insulator
Self-tying twist lock type
FALKENBERG, Richard A.
SIMON, Solomon S.
Self-tying Twist  
 1909
U 915,330 March 16, 1909 Insulator and Wire Clamp
Self-tying twist lock type
BLACKBURN, Jasper
Self-tying Twist  
 1913
U 1,059,629 April 22, 1913 Insulator
Self-tying twist lock type
PLATT, Thomas M.
Self-tying Twist  
 1917
U 1,217,032 February 20, 1917 Insulator for Electric Wires
Self-tying twist lock type
LYON, Cody
Self-tying Twist  
 1941
U Specimen known 2,266,340 December 16, 1941 Insulator
Self-tying twist lock type
SINDLINGER, Nevin Y.
Self-tying Twist  
 1933
U 1,937,764 December 5, 1933 Insulator
Self-tying tree insulator with mounting lag screw and convoluted metal wire clip cemented in the porcelain insulator designed such that the insulator is turned to allow the conductor to be dropped in the slot between the ends of the wire clip and then the
KYLE, William D.
Tree Insulator Line Material Co.
 1911
U 1,009,810 November 28, 1911 Insulator
Self-tying top groove with metal clip
WATKINS, Thomas H.
Self-tying Miscellaneous  
 1903
U 728,442 May 19, 1903 Electric Insulator
Self-tying slot top with wedge keeper plug
BURKE, Edward J.
Self-tying Slot Top 1/2 to Cummings & Anderson
 1902
U 711,629 October 21, 1902 Insulator
Self-tying slot top with wedge keeper
HOBERT, Clayton
Self-tying Slot Top 7/10 to S. Miller & E. Kerper
 1885
U 323,055 July 28, 1885 Insulator
Self-tying slot top with projections to bend wire
MCGRORY, Thomas
Self-tying Slot Top  
 1897
U 587,273 July 27, 1897 Insulator
Self-tying slot top with perpendicular hole for retainer. Also patents England: 16,087 (1-24-1896); Germany: 86,014 (4-25-1895)
RUDOLF, Heinrich
Self-tying Slot Top  
U 586,372 July 13, 1897 Insulator
Self-tying slot top with perpendicular hole for retainer
STEINBERG, JR., Henry W.
Self-tying Slot Top  
 1919
U 1,291,139 January 14, 1919 Insulator
Self-tying slot top with keeper nail
REESE, Rudolph R.
Self-tying Slot Top  
 1921
U 1,382,483 June 21, 1921 Electric Line Wire Insulator
Self-tying slot top with circular slot
DECKER, John G.
Self-tying Slot Top  
 1928
U 1,675,589 July 3, 1928 Insulator
Self-tying slot top via separate piece (similar to Ransom patent)
BABINEAU, Oliver D.
Self-tying Slot Top  
 1914
U 1,116,631 November 10, 1914 Insulator
Self-tying slot top for slack wire use
SCHISLER, Frank J.
Self-tying Slot Top  
 1917
U 1,241,929 October 2, 1917 Insulator
Self-tying slot top and clip
DADE, William A.
MORGAN, Richard E.
Self-tying Slot Top  
 1923
U 1,475,722 November 27, 1923 Insulator for Telephone and High Tension Conductors
Self-tying slot top and clip
ROMANDY, Joseph
Self-tying Slot Top  
 1903
U 737,027 August 25, 1903 Insulator
Self-tying slot top (see Brown No. 1 p. 128)
RUTLEDGE, William G.
Self-tying Slot Top  
 1888
U 383,734 May 29, 1888 Insulator for Electrical Wires
Self-tying slot top & metal keeper
KEYES, Frank E.
Self-tying Slot Top  
 1869
U 97,392 November 30, 1869 Improvement in Insulator for Telegraph Wires
Self-tying slot top
GUSEMAN, W. D.
BRIGHT, E. C.
Self-tying Slot Top  
 1887
U 367,164 July 26, 1887 Insulator
Self-tying slot top
RUGER, Henry K.
Self-tying Slot Top  
 1897
U 582,396 May 11, 1897 Insulator
Self-tying slot top
SCHNEE, William G.
Self-tying Slot Top 1/2 to John R. Dixon
U 590,832 September 28, 1897 Insulator
Self-tying slot top
GRIMM, Fred B.
NESSLER, John H.
Self-tying Slot Top  
 1903
U 730,805 June 9, 1903 Insulator
Self-tying slot top
STROH, William G.
Self-tying Slot Top  
U 740,314 September 29, 1903 Insulator
Self-tying slot top
ROBERTSON, Charles B.
ROBERTSON, John J.
Self-tying Slot Top  
 1905
U 801,196 October 3, 1905 Self-Locking Insulator
Self-tying slot top
MATHIAS, Charles L.
Self-tying Slot Top 1/2 to Frank Kennedy
 1906
U 821,401 May 22, 1906 Insulator
Self-tying slot top
CARTER, Taylor
Self-tying Slot Top  
U 831,338 September 18, 1906 Insulator
Self-tying slot top
GLICK, Monroe J.
Self-tying Slot Top J. Rardin & T. Rardin
 1911
U 986,702 March 14, 1911 Insulator
Self-tying slot top
FRIEND, David H.
Self-tying Slot Top  
 1912
U 1,038,418 September 10, 1912 Insulator
Self-tying slot top
NELSON, William H. S.
Self-tying Slot Top  
 1914
U 1,109,058 September 1, 1914 Insulator
Self-tying slot top
FRITZ, Osville J.
Self-tying Slot Top  
 1915
U 1,151,179 August 24, 1915 Insulator
Self-tying slot top
HARRIS, Edwin D.
Self-tying Slot Top 1/2 to Arthur Mueller
 1916
U 1,200,294 October 3, 1916 Insulator
Self-tying slot top
AYRE, William G.
SHAW, Frederick L.
Self-tying Slot Top  
U 1,205,069 November 14, 1916 Insulator
Self-tying slot top
WILLIAMS, Roger A.
Self-tying Slot Top  
 1921
U 1,371,855 March 15, 1921 Insulator
Self-tying slot top
BULLER, Henry W.
Self-tying Slot Top  
 1928
U 1,684,312 September 11, 1928 Electrical Insulator
Self-tying slot top
FISCHER, John J.
PAYNE, Warren R.
Self-tying Slot Top  
 1910
U 961,646 June 14, 1910 Insulator
Self-tying screw top with slotted top
REUSCH, William L.
Self-tying Screw Top  
 1912
U 1,043,916 November 12, 1912 Insulator
Self-tying screw top with slotted top
FARWELL, Frank M.
Self-tying Screw Top  
U 1,048,390 December 24, 1912 Insulator
Self-tying screw top with slotted top
BROWN, Fred
Self-tying Screw Top  
 1915
U 1,146,201 July 13, 1915 Electric Wire Insulator
Self-tying screw top with slotted top
NUNN, Silvester
Self-tying Screw Top  
 1918
U 1,263,746 April 23, 1918 Insulator
Self-tying screw top with slotted pin for holding wire
CREAMER, William H.
Self-tying Screw Top  
 1885
U 315,660 April 14, 1885 Supporting Insulator for Telegraph Wires
Self-tying screw top (see 1,305,168)
PRENZEL, Henry
Self-tying Screw Top  
 1879
U 217,427 July 8, 1879 Improvement in Telegraph Insulators
Self-tying screw top
TAYLOR, Burnley
Self-tying Screw Top  
 1889
U 402,592 May 7, 1889 Electric Wire Insulator
Self-tying screw top
HEAVISIDE, Arthur W.
Self-tying Screw Top  
 1891
U 460,448 September 29, 1891 Insulator
Self-tying screw top
ROSS, Frank A.
Self-tying Screw Top  
 1893
U Specimen known 490,560 January 24, 1893 Insulator
Self-tying screw top
HAUTY, Auguste J.
Insulator 1/3 to John Burke
 1897
U 585,026 June 22, 1897 Tieless Insulator
Self-tying screw top
DELERY, Robert
Self-tying Screw Top  
 1899
U 619,555 February 14, 1899 Telegraph Insulator
Self-tying screw top
FRANTZ, Isaac B.
Self-tying Screw Top  
U 626,592 June 6, 1899 Insulator
Self-tying screw top
CARPENTER, John
TONN, Charles
Self-tying Screw Top  
 1901
U 671,876 April 9, 1901 Self-Locking Insulator
Self-tying screw top
BEARDSLEY, Willard P.
Self-tying Screw Top  
 1902
U 697,628 April 15, 1902 Insulator and Attachment for Electric Wires
Self-tying screw top
JOHNSTON, Chauncey C.
Self-tying Screw Top  
U 704,172 July 8, 1902 Insulator
Self-tying screw top
CALVIN, James E.
Self-tying Screw Top 1/2 to Enos Cochran
U 713,904 November 18, 1902 Insulator for Telegraph Lines
Self-tying screw top
MURRAY, John E.
Self-tying Screw Top  
 1903
U 739,147 September 15, 1903 Insulator for Electric Wires
Self-tying screw top
BOTTJER, Herman
Self-tying Screw Top  
 1904
U 759,276 May 10, 1904 Insulator for Telegraph Wires
Self-tying screw top
HOBERT, Clayton
Self-tying Screw Top  
 1905
U 783,229 February 21, 1905 Locking Insulator
Self-tying screw top
STEINBERGER, Louis
Self-tying Screw Top  
U 802,397 October 24, 1905 Insulator for Electric Wires
Self-tying screw top
HUMPHREY, Clarence A.
Self-tying Screw Top  
 1907
U 849,606 April 9, 1907 Insulator
Self-tying screw top
GOLDSTEIN, Albion
Self-tying Screw Top  
U 872,756 December 3, 1907 Insulator
Self-tying screw top
SCHERER, Frederick C.
FASHBAUGH, Henry C.
Self-tying Screw Top  
 1911
U 992,397 May 16, 1911 Insulator
Self-tying screw top
ANDERSON, Milton E.
Self-tying Screw Top  
 1912
U 1,020,880 March 19, 1912 Insulator
Self-tying screw top
BOURKE, Alexander M.
Self-tying Screw Top  
 1915
U 1,150,697 August 17, 1915 Insulator
Self-tying screw top
NEELY, Zen W.
LEWIS, George A.
Self-tying Screw Top  
U 1,161,080 November 23, 1915 Insulator
Self-tying screw top
SPICER, Frank M.
Self-tying Screw Top  
 1916
U 1,167,208 January 4, 1916 Insulator
Self-tying screw top
OPPELT, William
Self-tying Screw Top 1/3 to Harry Gamber
 1917
U 1,228,349 May 29, 1917 Electric Insulator
Self-tying screw top
MUELLER, Auguste Robert
Self-tying Screw Top  
 1918
U 1,266,435 May 14, 1918 Telephone Insulator
Self-tying screw top
ENGLISH, Roy W.
Self-tying Screw Top  
 1897
D 27,756 October 19, 1897 Design for a Line Wire Insulator
Self-tying pin type
GRAHAM, Sarah A.
Pin-type  
 1901
D 35,462 December 17, 1901 Design for an Insulator for Electric Wires
Self-tying pin type
KING, Theodore F.
Pin-type  
 1925
U 1,538,428 May 19, 1925 Pole Line Insulator
Self-tying odd insulator screwed into cut-out in top of crossarm
EMMONS, Albert F.
Self-tying Miscellaneous  
 1916
U 1,190,286 July 11, 1916 Insulator
Self-tying non-pintype
HARLAN, Earle
Self-tying Miscellaneous  
 1903
U Specimen known 724,329 March 31, 1903 Insulator
Self-tying nail-knob with three flanges on top for tying wire around the knob and saw-toothed bottom edge to prevent the knob from turning.
POLK, Robert H.
Knob  
 1916
U 1,172,963 February 22, 1916 Insulator
Self-tying miscellaneous using odd projections on top and wire clamping device
ENGELHARDT, August J.
Self-tying Miscellaneous  
 1913
U 1,071,419 August 26, 1913 Insulator
Self-tying miscellaneous slotted cube
HETHERINGTON, Bert
Self-tying Miscellaneous  
 1912
U 1,045,353 November 26, 1912 Insulator for Automatically Securing Conducting Wires
Self-tying miscellaneous non-pin type slot-top
ZACHHUBER, Franz
Self-tying Miscellaneous  
 1883
U 274,821 March 27, 1883 Electric Wire Insulator
Self-tying miscellaneous
REIFF, William H.
Self-tying Miscellaneous 1/3 to Andrew Siep, Jr.
 1901
U 679,544 July 30, 1901 Insulator for Electric Wires
Self-tying miscellaneous
SHARPE, John E.
Self-tying Miscellaneous 1/2 to Newton Bartle
 1908
U 900,917 October 13, 1908 Insulator
Self-tying miscellaneous
DOBSON, Grant
Self-tying Miscellaneous 1/2 to Richard Ohloff
 1909
U 931,507 August 17, 1909 Insulator for Electric Wires
Self-tying miscellaneous
SILER, Aaron V.
Self-tying Miscellaneous 1/2 to Andrew Siler
U 944,259 December 28, 1909 Insulator
Self-tying miscellaneous
DENNLER, August G.
Self-tying Miscellaneous 1/3 to William Quigg
 1912
U 1,032,153 July 9, 1912 Insulator
Self-tying miscellaneous
NEMES, Mike
Self-tying Miscellaneous  
U 1,035,415 August 13, 1912 Insulator
Self-tying miscellaneous
BROWN, Robert L.
BROWN, Gus
Self-tying Miscellaneous  
 1873
U Specimen known 145,997 December 30, 1873 Improvement in Telegraph Insulators
Self-tying insulator with nut-like cap to secure wire in grooved base (CJ 7-2000)
FOX, Christian
HESTON, Elisha G.
Self-tying Miscellaneous  
U 138,512 May 6, 1873 Improvement in Insulators for Telegraph lines
Self-tying insulator with cap
MERRELL, Edward A.
Self-tying Miscellaneous  
 1908
U 891,955 June 30, 1908 Insulator
Self-tying insulator attached to top of crossarm consisting of a plate with two knobs to wrap the line wire around
SANDLIN, William C.
Self-tying Miscellaneous 1/3 to Arthur Moulton and 1/3 to C. W. Savage
 1895
U 546,585 September 17, 1895 Insulator
Self-tying insulator (NOTI Insulator Co.)
DIBB, William
VICKERS, Albert
Self-tying Miscellaneous  
 1876
U 184,509 November 21, 1876 Improvement in Telegraph Insulators
Self-tying head with threaded end to screw into pole
CUNNINGHAM, Robert A.
CROWELL, David F.
Self-tying Miscellaneous  
 1904
U 770,962 September 27, 1904 Insulator
Self-tying groove top and screw wire clamp
GILL, Jacob F.
Self-tying Miscellaneous  
 1916
U 1,178,383 April 4, 1916 Insulator
Self-tying cylindrical insulator with slot for line wire and bracket that fits around the insulator to hold the wire in place
CASLOW, William H.
Self-tying Miscellaneous  
 1894
U 520,412 May 29, 1894 Insulator
Self-tying cylindrical cleat
CONOVER, Chauncy E.
Self-tying Miscellaneous  
 1905
U 805,169 November 21, 1905 Insulator and Wire Clamp
Self-tying clamping with lever (see 552,501)
TAUBOLD, John F.
Self-tying Miscellaneous  
 1931
U 1,829,354 October 27, 1931 Insulator
Self-tying clamp-top
HOUDE, Victor Frederick
Self-tying Miscellaneous 1/2 to Ferdinand La Fleche
 1895
U 552,501 December 31, 1895 Insulator
Self-tying clamp with cam lever (see 805,169)
SNIVELY, Charles H.
Self-tying Miscellaneous  
 1924
U 1,509,074 September 16, 1924 Insulator
Self-tying clamp top
WILSON, James Leslie
Self-tying Miscellaneous  
 1916
U 1,174,002 February 29, 1916 Insulator
Self-tying ""T"" top
ETTINGER, Victor P.
Self-tying Miscellaneous  
 1886
U 342,320 May 25, 1886 Electric Circuit Wire Insulator
Self-tying
BLAKE, Edwin C.
TRIMNELL, Ernest C.
Self-tying Miscellaneous Blake & Trimnell and George Hunt
 1916
U 1,168,796 January 18, 1916 Wire Holder and Insulator
Self-tying
FRENCH, Clarkson S.
Self-tying Miscellaneous  
U 1,176,618 March 21, 1916 Insulator
Self-tying
SWEARINGEN, Walter E.
Self-tying Miscellaneous  
U 1,208,874 December 19, 1916 Insulator
Self-tying
WILSON, William E.
Self-tying Miscellaneous  
 1917
U 1,234,313 July 24, 1917 Insulator
Self-tying
EFFRIG, Anthony F.
Self-tying Miscellaneous  
 1918
U 1,257,983 March 5, 1918 Insulator
Self-tying
DE VAUGHN, Clyde T.
Self-tying Miscellaneous  
U 1,260,160 March 19, 1918 Insulator
Self-tying
DISBENNET, Charles
Self-tying Miscellaneous  
 1919
U 1,302,796 May 6, 1919 Insulator
Self-tying
HEARD, Thomas J.
Self-tying Miscellaneous  
 1924
U 1,509,645 September 23, 1924 Insulator
Self-tying
FOSS, Marvin J.
Self-tying Miscellaneous  
 1895
U 545,620 September 3, 1895 Cleat for Electric Wires
Self tying cleat known as the ""Eureka""
WOOD, Montraville M.
Cleat  
 1918
U 1,274,555 August 6, 1918 Choke Coil Mounting
Secure mounting of a choke coil on top of two multipart insulators fitted with metal brackets clamped to the crown (see 1,574,964 and 1,663,007)
JACOBS, Ernest H.
Choke Coil Electrical Engineers Equipment Co.
 1942
U 2,287,895 June 30, 1942 Secondary Rack Construction
Secondary wireholder for rack spools to be mounted on the end of a crossarm
MACKINNON, Russell H.
Wireholder 1/2 to Eugene C. Black
 1929
U 1,709,805 April 16, 1929 Method of Making Insulator Supports
Secondary rack stamped out of one piece of sheet metal. (see patent 1,917,322)
PEIRCE, JR., Charles L.
Bracket/secondary Rack  
 1933
U 1,917,322 July 11, 1933 Insulator Support
Secondary rack stamped out of one piece of sheet metal. (see patent 1,709,805)
PEIRCE, JR., Charles L.
Bracket/secondary Rack 1/2 to Hubbard and Co.
 1929
U 1,707,668 April 2, 1929 Insulator Support
Secondary rack stamped out of one piece of sheet metal.
MANSON, Ralph H.
Bracket/secondary Rack Hubbard and Co.
 1930
U 1,761,671 June 3, 1930 Secondary Rack
Secondary rack or wireholder with rounded edges to more easily allow wire to be pulled through it during installation.
HUSTED, Norris C.
Bracket  
 1929
U 1,722,672 July 30, 1929 Insulator Supporting Bracket
Secondary rack of simple but strong design eliminating rivets.
LUNDELL, Elmer W.
Bracket/secondary Rack Seyler Mfg. Co.
 1933
U 1,897,385 February 14, 1933 Insulator Bracket and Method of Making the Same
Secondary rack for spool insulators and method of manufacture
FASSINGER, Charles
Bracket Oliver Iron & Steel Corp.
 1915
U 1,152,211 August 31, 1915 Secondary Rack
Secondary rack built away from the pole.
PEIRCE, JR., Charles L.
Secondary Rack  
 1955
U 2,709,058 May 24, 1955 Insulator Support Rack
Secondary rack bracket with side tabs to receive screws or bolts.
VOSE, Fred C.
BURNIE, Glen
RUTH, Bernard W.
Bracket/secondary Rack General Electric Co.
 1925
U 1,524,141 January 27, 1925 Rack
Secondary rack bracket made by stamping sheet metal.
KYLE, William D.
Bracket/secondary Rack  
 1853
U 9,995 September 6, 1853 Improvement in Bottle Fastenings
Sealing method for glass jars
SPRATT, James
Bottle  
 1958
U 2,866,298 December 30, 1958 Method of Joining Glass Parts
Sealing halves of TV tubes together with special glass
BABCOCK, Clarence L.
OI Owens-Illinois Glass Co.
 1900
U Specimen known 650,602 May 29, 1900 Electric Fuse or Cut-Out
Screw type fuse holder
DOWNES, Louis W.
Fuse Holder  
 1913
R 13,661 December 23, 1913 Screw Press to Form Insulators
Screw press for insulators (reissue of 909,595)
HEMINGRAY, Ralph G.
HAWK, Charles
Press Hemingray Glass Co.
 1880
U 231,203 August 17, 1880 Lightning Rod Coupling
Screw coupling for ""star"" rods
WESTON, James H.
Lightning Rod Coupling  
 1858
U 22,186 November 30, 1858 Glass Jar
Screw cap shoulder seal fruit jar
MASON, John L.
HU  
 1925
U 1,566,070 December 15, 1925 Sagger
Sagger to provide uniform distribution in the kiln
BUCKLEY, Lorenzo C.
Sagger The R. Thomas & Sons Co.
 1916
U 1,196,273 August 29, 1916 Cross Arm Saddle
Saddle for pin that fits on top of crossarm
PEIRCE, JR., Charles L.
Pin 1/2 to Hubbard & Co.
 1939
U 2,146,597 February 7, 1939 Process of Treating Rubber
Rubber treating process
SCHWARTZ, Emil W.
CROASDALE, Evan T.
Rubber General Electric Co.
 1869
U Specimen known 96,198 October 26, 1869 Improvement in Insulator for Telegraph Wires
Rubber sleeve over pin for threadless insulator
BUSH, Charles A.
Rubber 2/3 to Henry Ostrum, Clifford Bush
 1931
U 1,810,950 June 23, 1931 Insulator
Rubber self-tying insulator
EARHART, Albert C.
Rubber  
 1882
U 268,075 November 28, 1882 Noise Deadening Insulator
Rubber plug or thimble inserted in pinhole
BROWN, Gouverneur M.
Rubber  
 1940
U Specimen known 2,218,497 October 15, 1940 Electrical Insulator
Rubber pin type insulator (see 2,304,483)
SMITH, Donald H.
WHEELER, Herbert H.
Rubber Western Union Telegraph Co.
 1962
U Specimen known 3,061,667 October 30, 1962 Telegraph Pole Line Insulator
Rubber pin type insulator (Brown p. 91)
MARKLEY, William F.
SLATER, James L.
Rubber Western Union Telegraph Co.
 1942
U Specimen known 2,304,483 December 8, 1942 Electrical Insulator
Rubber pin type insulator
SMITH, Donald H.
WHEELER, Herbert H.
Rubber Western Union Telegraph Co.
U 2,304,204 December 8, 1942 Electrical Insulator
Rubber insulator for wire fence
RATZMAN, Borah B.
Rubber  
 1940
U 2,215,152 September 17, 1940 Insulator
Rubber insert
HOSFIELD, Glenn E.
Rubber  
 1868
U 76,358 April 7, 1868 Improvement in Electric Telegraphs
Rubber in porcelain or glass shell; glazed shell; sharp drip edge; ears
VARLEY, Cromwell F.
Rubber  
 1884
U 296,881 April 15, 1884 Insulator
Rubber covered ring and knob with lag screw
SEELY, John A.
Rubber  
 1939
U 2,146,596 February 7, 1939 Rubber Insulating Compound and Method of Making the Same
Rubber compound for electrical conductors
SCHWARTZ, Emil W.
SAVAGE, Manuel H.
SPARGO, Francis C.
Rubber General Electric Co.
 1872
U 126,027 April 23, 1872 Improvement in Insulators for Telegraph Wires
Rubber coated flattened pin coated with mica for porcelain insulator with a cap
CONKLIN, JR., Joseph I.
Rubber  
 1952
U 2,623,094 December 23, 1952 Resiliently Mounted Spool Type Insulator
Rubber bushing for mounting Case type & rack type spool insulators
MARKLEY, William F.
Rubber Western Union Telegraph Co.
 1851
U Specimen known 8,075 May 6, 1851 Improvement in the Manufacture of India Rubber
Rubber - vulcanizing process for hard rubber for insulator
GOODYEAR, Nelson
Rubber  
 1891
U 445,969 February 10, 1891 Electric Insulator
Round insulator mounted on top of crossarm with two screws and surrounded with a rubber tube. Conductor is supported on top and secured with a metal clip.
BRANCH, James R.
Insulator  
 1872
U 129,724 July 23, 1872 Improvement in Insulators for Telegraphic Uses
Roughened lower surface of insulator to retain patented coating mixture
FARMER, Moses G.
Rough  
 1907
U 851,705 April 30, 1907 Insulator
Roof entry insulator
STOTZ, Hugo
Roof  
 1919
U 1,326,307 December 30, 1919 Method of and Means for Supporting Electric Conductors
Rod type insulators used as suspension insulators for high voltage conductors.
THOMAS, Percy H.
Suspension  
 1899
D 31,861 November 21, 1899 Design for a Ring Insulator
Ring wire holder (see ID 5165)
COPELAND, Herschel P.
Misc  
 1916
U 1,186,857 June 13, 1916 High Tension Strain Insulator
Rigid suspension insulator made of multiple units
STEINBERGER, Louis
Electrose  
 1931
U 1,811,530 June 23, 1931 Insulating Device
Ribbed suspension insulator with deep hollow interior to receive linkage hardware to connect the next insulator
BAUM, Frank G.
Suspension Westinghouse Electric & Mfg. Co.
 1938
U Specimen known 2,118,795 May 24, 1938 Insulator
RFI: tin iridized coating to reduce water adherence, radio interference, and reflect sun
LITTLETON, Jesse T.
RFI Corning Glass Works
U Specimen known 2,133,768 October 18, 1938 Insulator
RFI: non-conducting iron iridized coating over tin iridized coating (see 2,118,795)
HOSTETTER, John C.
LITTLETON, Jesse T.
RFI Corning Glass Works
 1939
U 2,154,387 April 11, 1939 Electric Insulator
RFI: coat crown with metallic glaze to prevent radio interference (advertised in Electrical World 8-12-1939)
SLEEMAN, Harold P.
RFI The R. Thomas & Sons Co.
 1934
U 1,973,076 September 11, 1934 Insulator
RFI: coat crown with gold, platinum, bismuth & semi-conductive area
HUNT, Marsden H.
RFI Westinghouse Electric & Mfg. Co.
 1935
U 1,997,688 April 16, 1935 Insulator
RFI: coat crown with copper glaze to prevent radio interference
HUNT, Marsden H.
BARROW, George M.
RFI Westinghouse Electric & Mfg. Co.
U 1,987,683 January 15, 1935 Insulator
RFI: coat crown with copper glaze to prevent AM radio interference
HUNT, Marsden H.
BARROW, George M.
RFI Westinghouse Electric & Mfg. Co.
 1937
U 2,081,508 May 25, 1937 Insulator Having High Surface Resistance and Method of Making It
RFI: carnival coating (stain) to increase surface resistance and for marker insulator
SHAVER, William W.
RFI Corning Glass Works
 1942
U 2,274,955 March 3, 1942 High Tension Electric Insulator and Method of Coating Same
RFI: antimony coated top
DYKSTRA, Laurence J.
MEYER, Edwin M.
RFI Victor Insulators, Inc.
 1932
U 1,889,244 November 29, 1932 Noninterferring Insulator
RFI treatment for new or existing insulators by attaching a metal crown
HAWLEY, Kent A.
RFI Locke Insulator Corp.
 1972
U 3,658,583 April 25, 1972 Method for Producing Semi-Conducting Glaze Compositions for Electric Insulators
RFI semi-conductive glaze formulas
OGAWA, Yutaka
RFI NGK Insulators, Ltd.
 1968
U 3,368,026 February 6, 1968 Electrical Insulator Having Improved Surface Electrical Stress Distribution
RFI prevention using two glaze coatings on suspension insulators
VINCE, Patrick Michael
RFI Doulton & Co., Ltd.
 1974
U 3,836,705 September 17, 1974 Electrical Insulator and Conducting Tar Therefore
RFI prevention using conductive tar to coat insulator and metal surfaces for cementing
ROSENBLATT, Gordon
RFI Canadian Porcelain Co.
 1942
U 2,281,173 April 28, 1942 Insulator and Method of Producing Conducting Coating Thereon
RFI prevention using an inexpensive glaze coating
SANTOMIERI, Sebastian L.
RFI Victor Insulators, Inc.
 1935
U 1,997,666 April 16, 1935 Insulator
RFI multipart design with metal cap over crown with extension over coated area of top shell and metallic coating on each shell below cement joint
WHISLER, George M.
RFI Westinghouse Electric & Mfg. Co.
 1941
U 2,264,152 November 25, 1941 Method of Forming a Metallic Surface on Ceramic Bodies
RFI metallic coating that strongly adheres to the insulator
ROWLAND, Davidge H.
RFI Locke Insulator Corp.
 1932
U 1,852,093 April 5, 1932 Article of Manufacture and Process of Making It
RFI metallic coating and process of applying it to porcelain insulators
SMEDE, Lloyd
SHAND, Errol B.
RFI Westinghouse Electric & Mfg. Co.
U 1,872,557 August 16, 1932 Article of Manufacture
RFI metal coating around the crown of an insulator so the tie-wire and conductor can be soldered to the coating
BARROW, George M.
RFI Westinghouse Electric & Mfg. Co.
 1951
U 2,576,723 November 27, 1951 Electric Insulator Having Potential Drop Controlling Means
RFI design using two conductive coatings of different temperature expansion
PERRINS, George
RFI Bullers Limited
 1942
U 2,283,685 May 19, 1942 High Resistance Conducting Coating for Electric Insulators
RFI coating to prevent radio interference
MCCREERY, George L.
CAMPBELL, Van E.
RFI The Ohio Brass Co.
 1929
U 1,735,829 November 12, 1929 Means and Method for Controlling Surface Resistance of Insulators
RFI coating on suspension insulators with graded or reduced thickness away from the center of the disk
AUSTIN, Arthur O.
RFI The Ohio Brass Co.
 1934
U 1,975,576 October 2, 1934 Method of Applying a Conducting Coating on Insulators
RFI coating of carbon fused to the surface
HAWLEY, Kent A.
RFI Locke Insulator Corp.
 1944
U 2,357,550 September 5, 1944 Insulator
RFI coating applied before firing the insulator
ROWLAND, Davidge H.
RFI Locke Insulator Corp.
 1998
U 5,796,048 August 18, 1998 Insulator having Conductive Surface Coating to Prevent Corona Discharge
RFI coating
SUZUKI, Yoshihiro
KUTSUNA, Eiji
RFI NGK Insulators, Ltd.
 1915
U Specimen known 1,127,776 February 9, 1915 Insulator
Reversible nail-knob
KETTRON, Charles W.
Knob Illinois Electric Porcelain Co.
U Specimen known 1,147,498 July 20, 1915 Divided Insulator
Reversible nail-knob
FREEMAN, Edgar H.
Knob Trenton Porcelain Co.
 1967
U 3,347,003 October 17, 1967 Protective Mounting Structure for Retractable Antenna
Retractable antenna for a bomb shelter
LAPP, Rudolph S.
Antenna Lapp Insulator Co., Inc.
 1905
U 802,498 October 24, 1905 Retaining Clip for Third Rail Insulators
Retaining clip for third rail insulators to secure the rail.
COURTENAY, William
Third Rail  
 1910
U 946,722 January 18, 1910 Insulator Clamp
Replacement for a tie wire consisting of a curved or looped bolt and metal strap to bolt on the insulator and clamp the line wire securely
CLARK, Walter G.
Tie Wire  
 1879
U 218,426 August 12, 1879 Improvement in Reflectors
Removable reflector hanging wall oil lamp (meteor)
BRYANT, Edison L.
RUSSELL, William F.
HU Wallace & Sons
 1881
R 9,934 November 15, 1881 Lightning Rod
Reissue of R6,835 which was a reissue of 167,415; Lightning rod system tied into the existing gutter of a home or building
SPANG, Henry W.
Lightning Rod  
 1913
R 13,526 February 11, 1913 Insulator
Reissue of patent 904,069. Strain insulator to electrically disconnect the circuit.
KEMPTON, Willard H.
Strain The Johns-Pratt Co.
 1920
R 14,844 April 20, 1920 Fuse Device
Reissue of patent 1,222,952 for fuse holder with plug insert to hold the fuse. (see patent 1,222,952)
HERZ, Alfred
Fuse Holder 1/2 to Edmund O. Schweitzer
 1917
R Specimen known 14,416 December 25, 1917 Fuse Device
Reissue of patent 1,144,732 for fuse holder with knife insert. (see patent 1,144,732)
SCHWEITZER, Edmund O.
HERZ, Alfred
Fuse Holder  
 1929
U 1,710,756 April 30, 1929 Reduction of Attenuation Due to the Conductance Losses in Cross Arms and Insulator Pins
Reducing leakage on carrier circuits
WILSON, Leon T.
Carrier American Telephone & Telegraph Co.
 1936
D 99,075 March 24, 1936 Design for a Glass Building Block
Rectangular block design with diamond lines and fine mesh
EASTUS, Harold L.
OI Owens-Illinois Glass Co.
 1906
U 823,820 June 19, 1906 Prong Insulator
Ramshorn made of Electrose with lips and spout
STEINBERGER, Louis
Ramshorn  
 1908
U 905,940 December 8, 1908 High Tension Insulator
Rainshed for conductor supported by crown
SEMENZA, Guido
Rainshed  
 1890
U 425,513 April 15, 1890 Insulator
Rainshed (hood) over wire
KOOKOGEY, William P.
Rainshed The Kookogey Electric Co.
 1865
U 47,551 May 2, 1865 Improvement in Lanterns
Railroad Lantern
IRWIN, John H.
HU  
U 50,591 October 24, 1865 Improvement in Lanterns
Railroad Lantern
IRWIN, John H.
HU  
 1959
U 2,867,551 January 6, 1959 Apparatus and Method for Applying Conductive Coatings to Insulators
Radio treatment process for CD 239
KOZAK, John
RFI Owens-Illinois Glass Co.
 1960
U 2,953,483 September 20, 1960 Method and Apparatus for Applying Coatings to Selected Areas of Articles
Radio treatment process for CD 239
TOROK, Julius J.
RFI Owens-Illinois Glass Co.
 1927
U 1,620,392 March 8, 1927 Insulator
Radio strain with special pointed metal clips to minimize leakage
RIDER, Hebert E.
Radio Edward L. Hall
 1929
U Specimen known 1,700,066 January 22, 1929 Insulator for Radio Frequency Currents
Radio strain insulator made from Pyrex glass for antennas
MARSHALL, Albert E.
Radio Corning Glass Works
 1932
U 1,886,984 November 8, 1932 Insulator Structure
Radio strain insulator for antennas
STATON, Harry C.
Radio  
 1917
U 1,239,902 September 11, 1917 Insulator
Radio strain insulator
GODDARD, Walter T.
Radio  
 1926
D Specimen known 69,381 February 9, 1926 Design for an Insulator
Radio strain
BRACH, Leon S.
Strain L. S. Brach Manufacturing Co.
 1948
U Specimen known 2,444,938 July 13, 1948 Insulator
Radio antennae insulator with center hole for nail and side slits to hold the antennae wire
MARTIN, JR., Albert D.
Radio  
 1936
U 2,056,813 October 6, 1936 Flux Distributing Insulator
Radio antenna strain insulator with metal ribs on the outside to control the electrostatic flux density
VROOMAN, Edward C.
Strain Locke Insulator Corp.
 1908
U 887,336 May 12, 1908 Electric Insulator
Radio antenna strain insulator made weatherproof with a metal cover.
MIETH, Herman
Radio Antenna  
 1854
U 10,396 January 3, 1854 Improvement in Sealing Preserve Cans
Pump to pull a vacuum on a can
NICHOLSON, Henry C.
SPRATT, James
Can  
 1892
U 473,497 April 26, 1892 Pug Mill
Pug mill for extruding clay
CROSSLEY, Joseph
Pug Mill  
 1942
U 2,297,646 September 29, 1942 Pug Mill
Pug mill design to prevent stresses and strains in the clay as it is extruded
BELLEZZA, Russell G.
SKIPPER, Edward M.
Pug Mill Locke Insulator Corp.
 1918
U 1,280,172 October 1, 1918 Insulator Protector
Protective shield surrounding the insulator to protect it from damage.
CULLIGAN, Charles A.
Protective Shield  
 1896
U 566,045 August 18, 1896 Insulator for Electrical Purposes
Protective shield of metal with non-conducting enameled coating
WHITAKER, Alfred J. P.
TREHARNE, Frederick G.
Protective Shield  
 1918
U 1,277,304 August 27, 1918 Metal Protected High Voltage Insulator
Protective shield of metal to protect insulator
GATI, Bila
Protective Shield  
 1916
U 1,177,867 April 4, 1916 Insulator Protector
Protective shield of metal to protect glass insulator
JOHNSON, August
Protective Shield  
 1911
U 1,010,181 November 28, 1911 Electric Cable Protector
Protective shield mounted on top of the insulator to support the conductor.
SANDFORD, JR., Joseph Addison
Protective Shield The R. Thomas & Sons Co.
 1894
U 527,317 October 9, 1894 Insulator
Protective shield for wire groove
BULLOCK, Edward J.
Protective Shield  
 1891
U 445,008 January 20, 1891 Insulator
Protective shield for trolley hanger insulator
VOGLER, William
Protective Shield  
 1909
U 930,750 August 10, 1909 Insulator
Protective shield & splash preventor on pin under insulator
GRAHAM, Charles M.
Protective Shield  
 1905
U 787,442 April 18, 1905 Insulator for Electric Wires
Protective shield
FLYNT, Samuel B.
MAIDEN, Leaman A.
Protective Shield  
 1909
U 909,935 January 19, 1909 Protected Insulator
Protective shield
REA, John H. B.
Protective Shield  
 1911
U 983,039 January 31, 1911 Insulator Protector
Protective shield
FIELD, John E.
Protective Shield  
 1928
U 1,659,731 February 21, 1928 Insulator
Protective shield
GREEN, Estill I.
Protective Shield American Telephone & Telegraph Co.
U 1,678,663 July 31, 1928 Insulator
Protective shield
WILSON, Leon T.
Protective Shield American Telephone & Telegraph Co.
 1938
U 2,135,558 November 8, 1938 Insulator Shield
Protective shield
BOTT, Perry J.
Protective Shield  
 1930
U 1,772,947 August 12, 1930 Electric Insulator
Protective metal shield to cover linkage or connectors for suspension disks to prevent moisture damage to threaded connectors
HOFFMAN, Gottfried
Suspension Motor-Columbus Aktiengesellschaft Fur Elektrische Unternehmungen
 1914
U 1,088,278 February 24, 1914 Rain Guard for Insulators
Protective metal rain guard for bottom of skirt
HOLMES, Minot K.
Protective Shield Hemingray Glass Co.
 1923
U 1,449,694 March 27, 1923 Protective Device
Protective device to prevent arcing
PEEK, JR., Frank W.
Miscellaneous General Electric Co.
 1897
U 592,505 October 26, 1897 Electrical Insulator
Protective coating of elastic material and wire groove protector
BARBOUR, Wellington
Protective Coat  
 1919
U 1,304,622 May 27, 1919 Heating Vessel
Production of glass baking dishes from Pyrex glass
SULLIVAN, Eugene C.
TAYLOR, William C.
Non-electrical Corning Glass Works
 1907
U 866,787 September 24, 1907 Furnace
Producer gas furnace combined with boiler
HEMINGRAY, Ralph G.
JENSEN, John O.
HI  
 1919
U 1,312,053 August 5, 1919 Process of Decomposing Potassium Silicates
Process of extracting potassium to be used in glass manufacture (see patent 1,327,781; 1,327,782)
SCHOLES, Samuel R.
Glass H. C. Fry Glass Co.
 1920
U 1,327,781 January 13, 1920 Process of Extracting Potassium from Potash-Bearing Silicate Minerals
Process of extracting potassium to be used in glass manufacture (see patent 1,312,053; 1,327,782)
SCHOLES, Samuel R.
BRENNER, Ralph F.
Glass  
U 1,327,782 January 13, 1920 Process of Obtaining Combined Potassium from Minerals
Process of extracting potassium to be used in glass manufacture (see patent 1,312,053; 1,327,781)
SCHOLES, Samuel R.
Glass  
 1875
U 170,339 November 23, 1875 Improvement in Processes of Annealing Glass
Process of annealing glass
BROOKFIELD, James M.
Glass  
 1925
U 1,528,908 March 10, 1925 Process of Forming Ceramic Products
Process of adding reagents to accelerate hardening of the clay to reduce the time body is in mold
BLEININGER, Albert V.
Manufacturing 1/2 to Frank H. Riddle
 1908
U 889,354 June 2, 1908 Process for Feeding Molten Glass for Making Glass Insulators or Similar Articles
Process for feeding molten glass to the press
BROOKFIELD, Henry M.
Process Brookfield Glass Co.
 1906
U 836,298 November 20, 1906 Process of Making Glass Insulators or Other Glass Articles
Process covering patent 836,297: press, fully automatic operation, measuring molten glass to annealing
BROOKFIELD, Henry M.
Press  
 1971
U 3,582,538 June 1, 1971 Prestressed Insulator
Prestressing post type insulators by making porcelain in compression in order to increase cantilever load
KILLIAN, Stanley C.
DEWEY, Benjamin F.
Post Type Interpace Corp.
 1906
U 836,297 November 20, 1906 Apparatus for Making Glass Insulators or Other Similar Glass Articles
Press, fully automatic operation: glass flow apparatus for measuring molten glass
BROOKFIELD, Henry M.
Press  
 1904
U 773,768 November 1, 1904 Molding Machine
Press, automatic
SCHORLING, William H.
Press Henry M. Brookfield
 1906
U 835,393 November 6, 1906 Process for Molding Glass
Press using steam to cool threading mandrel to prevent deformation of threads
BROOKFIELD, Henry M.
Press  
 1909
U 941,032 November 23, 1909 Process of Manufacturing Insulators
Press to mold and produce composition strain insulator
MCCARTHY, Louis
Press The Macallen Co.
 1942
U 2,301,939 November 17, 1942 Production of Ceramic Bodies
Press to make a very dense porcelain body. It is neither wet process nor dry process porcelain.
FISCHER, Eugene H.
Press Westinghouse Electric & Mfg. Co.
 1906
U 838,727 December 18, 1906 Die for Forming Insulators
Press to form petticoats - improvement on 716,343 (see reissue 12,934 on 6-4-1909)
LOCKE, Fred M.
Press  
 1892
U 474,496 May 10, 1892 Apparatus for Molding Earthenware, &c.
Press to form lateral indentions or wire grooves around the side of the insulator to such as for standard porcelain knobs
CROSSLEY, Joseph
Press  
 1952
U 2,582,922 January 15, 1952 Apparatus for Molding Articles
Press that can be adapted for insulator manufacture
CROWLEY, Henry L.
HOSSENLOPP, Arthur M.
Press Henry L. Crowley & Co., Inc.
 1895
U 533,212 January 29, 1895 Combined Jigger and Pulldown
Press or jigger gearing and mechanism for forming earthen ware articles such as dishes and pottery
CROSSLEY, Joseph
Press  
 1906
U 811,602 February 6, 1906 Mold for Plastic Materials
Press mold for forming insulators
WATTS, Arthur S.
Press The Locke Insulator Mfg. Co.
 1929
U 1,717,996 June 18, 1929 Means for and Method of Making Insulators
Press method of molding porcelain insulator with vibration improves quality (Hewlett)
MOORE, JR., Stewart L.
Press Locke Insulator Corp.
 1903
U 736,708 August 18, 1903 Machine for Producing Glass Bottles
Press for pressing glass bottles
DUFFIELD, Thomas C.
Press  
 1908
U 894,623 July 28, 1908 Apparatus for Molding Porcelain Ware
Press for molding small dry process insulators such as nail-knobs, etc.
GEISENHONER, Henry
Press General Electric Co.
 1884
U Specimen known 306,146 October 7, 1884 Press for Molding Glass Insulators
Press for making threads with removable thread forming mandrel
GRAY, Lawrence B.
Press  
U Specimen known 306,147 October 7, 1884 Press for Molding Glass Insulators
Press for making threads with removable thread forming mandrel
GRAY, Lawrence B.
HAM, Joseph
Press  
 1930
U 1,779,811 October 28, 1930 Method of Manufacturing Insulators
Press for making skirts/petticoats in one-piece porcelain (replaces casting)
HARVEY, William F.
Press  
 1902
U 716,343 December 16, 1902 Machine for Forming the Interiors of Plastic Materials
Press for making porcelain insulators
LOCKE, Fred M.
Press  
 1909
U 934,930 September 21, 1909 Insulator Pressing Machine
Press for making porcelain insulators
MCCANN, Thomas T.
Press  
 1870
U Specimen known 99,145 January 25, 1870 Improvement in the Manufacture of Insulators for Telegraph Poles
Press for making insulators, first making hole, then threads
BROOKE, Homer
Press  
U Specimen known 103,555 May 31, 1870 Improved Mode of Forming Glass Insulators
Press for making insulators using 2-piece mold & one forming operation (see reissue 9,392 on 9-28-1880)
BROOKFIELD, James M.
Press  
 1871
U Specimen known 113,393 April 4, 1871 Improvement in the Mode of Making Telegraph Insulators
Press for making insulators leaving plunger in insulator
BROOKFIELD, William
Press  
 1906
U 810,031 January 16, 1906 Press for Making Glass Articles
Press for making insulators and bottles
BROOKFIELD, Henry M.
Press  
 1909
U 909,595 January 12, 1909 Screw Press to Form Insulators
Press for making insulators (see reissue 13,661 on 12-23-1913)
HEMINGRAY, Ralph G.
HAWK, Charles
Press Hemingray Glass Co.
 1903
U 723,589 March 24, 1903 Machine for Producing Glass Insulators
Press for making insulators (Elmer Glass Co., transferred to Brookfield 1907)
DUFFIELD, Thomas C.
Press  
 1872
U 128,280 June 25, 1872 Improvement in Glass Presses
Press for making insulators
BROOKE, Aries P.
Press William Brookfield
U 129,095 July 16, 1872 Improvement in Glass Presses
Press for making insulators
BROOKE, Aries P.
Press  
 1883
U 275,984 April 17, 1883 Press and Mold for Molding Glass
Press for making insulators
BROOKE, Aries P.
Press William Brookfield
U Specimen known 282,989 August 14, 1883 Apparatus for Making Glass Insulators
Press for making insulators
JOHNSON, Mathew
Press  
 1884
U 303,936 August 19, 1884 Machine for Making Glass Insulators
Press for making insulators
KRELL, Emil F.
Press 3/5 to Orville W. Owen
 1885
U 310,484 January 6, 1885 Press for the Manufacture of Insulators and other Glass Articles
Press for making insulators
WEYMAN, George W.
Press 1/2 to Charles T. Weyman
 1890
U 419,875 January 21, 1890 Screw Press for Insulators
Press for making insulators
PEASE, Jacob
Press William Brookfield
 1891
U 462,862 November 10, 1891 Press for Molding Glass Insulators
Press for making insulators
GRAY, Lawrence B.
Press  
 1895
U 532,973 January 22, 1895 Screw Press for Forming Insulators
Press for making insulators
KRIBS, Seraphin
Press William Brookfield
U 542,565 July 9, 1895 Press for Making Screw Insulators
Press for making insulators
KRIBS, Seraphin
Press William Brookfield
 1897
U 588,795 August 24, 1897 Glass Press
Press for making insulators
HEMINGRAY, Ralph G.
Press  
 1898
U 596,651 January 4, 1898 Press for Making Insulators
Press for making insulators
BROOKFIELD, Henry M.
Press William Brookfield
U 596,652 January 4, 1898 Press for Making Insulators
Press for making insulators
BROOKFIELD, Henry M.
KRIBS, Seraphin
Press William Brookfield
U 596,682 January 4, 1898 Press for Making Insulators
Press for making insulators
KRIBS, Seraphin
Press William Brookfield
U 614,303 November 15, 1898 Glass Press
Press for making insulators
HEMINGRAY, Ralph G.
Press  
 1904
U 761,326 May 31, 1904 Machine for Molding Insulators
Press for making insulators
SCHORLING, William H.
Press Henry M. Brookfield
 1906
U 835,235 November 6, 1906 Press for Making Glass Insulators or Similar Articles
Press for making insulators
BROOKFIELD, Henry M.
STIVERS, William D.
Press Henry M. Brookfield
U 835,236 November 6, 1906 Press for Making Insulators or Similar Articles
Press for making insulators
BROOKFIELD, Henry M.
Press  
U 835,245 November 6, 1906 Press for Making Glass Insulators or Similar Glass Articles
Press for making insulators
KRIBS, Seraphin
Press Henry M. Brookfield
 1916
U 1,193,787 August 8, 1916 Glass Working Machine
Press for making insulators
HOLMES, Minot K.
Press Hemingray Glass Co.
 1927
U 1,642,658 September 13, 1927 Glass Working Machine
Press for making insulators
HOLMES, Minot K.
Press Hemingray Glass Co.
 1872
U 131,153 September 10, 1872 Improvement in Presses for Making Glass Insulators
Press for making insulator and threads
DEEMER, Henry C.
EUFINGER, Joseph W.
Press  
 1903
U 742,601 October 27, 1903 Glass Finishing Apparatus
Press for making glassware
CROSKEY, John H.
Press  
U 742,602 October 27, 1903 Method of Finishing Glassware
Press for making glassware
CROSKEY, John H.
Press  
 1906
U 817,835 April 17, 1906 Apparatus for Manufacturing Glass Articles
Press for making glassware
CROSKEY, John H.
Press Duquesne Glass Co.
U 817,836 April 17, 1906 Apparatus for Manufacturing Glass Articles
Press for making glassware
CROSKEY, John H.
Press Duquesne Glass Co.
U 820,477 May 15, 1906 Apparatus for Manufacturing Glass Articles
Press for making glassware
CROSKEY, John H.
Press Duquesne Glass Co.
U 820,478 May 15, 1906 Apparatus for Manufacturing Glass Articles
Press for making glassware
CROSKEY, John H.
Press Duquesne Glass Co.
U 820,479 May 15, 1906 Apparatus for Manufacturing Glass Articles
Press for making glassware
CROSKEY, John H.
Press Duquesne Glass Co.
 1907
U 840,994 January 8, 1907 Apparatus for Manufacturing Glass Articles
Press for making glassware
CROSKEY, John H.
Press Duquesne Glass Co.
U 852,932 May 7, 1907 Charging Mechanism for Glass Molds
Press for making glassware
CROSKEY, John H.
Press Duquesne Glass Co.
 1908
U 881,096 March 3, 1908 Glass Gathering Apparatus
Press for making glassware
CROSKEY, John H.
Press Duquesne Glass Co.
 1884
U Specimen known 291,072 January 1, 1884 Press for Molding Glass Insulators
Press for making glass insulators to form interior
MURPHY, Edward J.
Press Lawrence Gray & Joseph Ham
 1875
U 162,894 May 4, 1875 Improvement in Machines for Pressing and Molding Glass
Press for making glass insulators
BROOKE, Aries P.
Press James M. Brookfield
 1881
U Specimen known 242,825 June 14, 1881 Glass Press for the Manufacture of Insulators
Press for making glass insulators
HEMINGRAY, Robert
Press  
 1909
U 937,137 October 19, 1909 Machine for Producing Glass Insulators
Press for making glass insulators
ZURN, Charles M.
Press  
 1911
U 1,011,023 December 5, 1911 Machine for Making Glass Articles
Press for making glass insulators
BROOKFIELD, Henry M.
Press Brookfield Glass Co.
 1913
U 1,049,594 January 7, 1913 Press for Molding Insulators or Similar Articles
Press for making glass insulators
OLSEN, Sigward
Press Brookfield Glass Co.
 1915
U 1,136,275 April 20, 1915 Press for Making Glass Insulators
Press for making glass insulators
ROEHRICH, Frank N.
Press Brookfield Glass Co.
U 1,137,000 April 27, 1915 Fluid Molding Press
Press for making glass insulators
BROOKFIELD, Henry M.
OLSEN, Sigward
Press Brookfield Glass Co.
U 1,144,527 June 29, 1915 Mold
Press for making glass insulators
BROOKFIELD, Henry M.
OLSEN, Sigward
Press Brookfield Glass Co.
 1932
U 1,844,549 February 9, 1932 Glass Working Machine
Press for making glass insulators
HEADLEY, Benjamin T.
DU BOIS, David Irvin
KOOB, Bernard H.
LOBB, Frank H.
Press Whitall Tatum Co.
 1946
U 2,393,549 January 22, 1946 Press Molding Machine
Press for glass land mine production
MCCREERY, Cecil Wayne
OI Owens-Illinois Glass Co.
 1964
U 3,129,089 April 14, 1964 Forming Glass Articles
Press for glass blocks & TV faceplates
TOROK, Julius J.
OI Owens-Illinois Glass Co.
 1927
U 1,640,514 August 30, 1927 Press for Forming Plastic Materials
Press for forming threads in wet process porcelain
MUELLER, Ferdinand C. H.
Press Findlay Electric Porcelain Co.
 1925
U 1,556,440 October 6, 1925 Press for Making Insulators and the Like
Press for forming threads in porcelain insulators and to prevent damaging the threaded pinhole once formed
HIBBARD, Robert L.
Press  
 1871
U 116,926 July 11, 1871 Improvement in Glass Presses
Press for forming threads in insulators whereby the threaded mandrel remains in the insulator and removed after glass has set up
BROOKE, Aries P.
Press  
 1883
U 283,321 August 14, 1883 Molding Screw Forms in Plastic Material
Press for forming threads (referenced in one of the Brookfield/Elmer Glass lawsuits)
BROOKE, Homer
Press  
 1965
U 3,185,558 May 25, 1965 Moulding Hollow Glass Articles
Press for forming the inner shape of glass articles such as a suspension insulator
WILCOCK, John Edward
Press Pilkington Brothers Ltd.
U 3,185,560 May 25, 1965 Plural Piston Press Forming Apparatus
Press for forming the inner shape of glass articles such as a suspension insulator
WILCOCK, John Edward
Press Pilkington Brothers Ltd.
 1880
R Specimen known 9,392 September 28, 1880 Mode of Forming Insulators
Press for forming insulator and threaded pinhole (reissue of 103,555)
BROOKFIELD, James M.
Press  
 1909
R 12,934 April 6, 1909 Die for Forming Insulators
Press die for forming insulators (reissue of patent 838,727)
LOCKE, Fred M.
Press  
 1874
U 151,352 May 26, 1874 Improvement in Machines for Molding Plastic Materials
Press and plunger to form threadless pinhole in glass
BROOKE, Homer
Press  
 1924
U 1,488,474 April 1, 1924 Machine for Molding Insulators
Press and molding machine for porcelain insulators
BURNS, James A.
Press Westinghouse Electric & Mfg. Co.
 1941
U 2,234,656 March 11, 1941 Insulator Tie for Electric Conductors
Preformed tie wire clips that fit around the insulator and clip on the line wire
SCHMALZ, James H.
Tie Wire Copperweld Steel Co.
 1962
U 3,069,491 December 18, 1962 Helical Spring Wire Tie
Preformed tie wire and line wire reinforcement using a simple single length of spring wire with no clips
HAYDEN, Albert P.
MASON, Alden O.
Tie Wire United States Steel Corp.
 1966
U 3,288,918 November 29, 1966 Apparatus for Securing Lines to Supports
Preformed tie wire and line reinforcement of ribbon helix made of resilient material that may be uncoiled to make the tie but spring back to preformed shape
SCHLEIN, Seymour N.
Tie Wire The Fanner Mfg. Co.
 1960
U 2,941,029 June 14, 1960 Preformed Tie for Fastening a Line Wire to an Insulator
Preformed tie wire and line reinforcement of hard drawn wire helix with loops in the ends of the tie wire loop portion for a hand tool to pull tie wire tight around the insulator
STOECKEL, Albert L.
Tie Wire United State Steel Corp.
 1939
U 2,172,810 September 12, 1939 Reinforcement for Transmission Lines and the Like
Preformed length of wire for specific line wire diameter to extend on either side of insulator to dampen out vibration in the line wire
SHERMAN, Delmar C.
Miscellaneous  
 1947
U 2,421,286 May 27, 1947 Insulator Tie for Line Conductors
Preformed hard drawn wire helix to act as line wire reinforcement and tie wire
PYLE, Ralph D.
Tie Wire Copperweld Steel Co.
 1880
U 224,580 February 17, 1880 Induced Current Guard for Electrical Conductors
Pre-transposition technique to eliminate induced current on telephone and telegraph wires
CHINNOCK, Charles E.
Transposition  
 1883
U 287,092 October 23, 1883 Mechanism for Preventing Induced Currents in Telephone Lines
Pre-transposition technique to eliminate induced current on telephone and telegraph wires
BRENNAN, James W.
ROUSSEAU, Necter
Transposition  
 1886
U 343,014 June 1, 1886 Means for Preventing Disturbances on Telephone Lines
Pre-transposition technique to eliminate induced current on telephone and telegraph wires
DANN, John E.
LAPP, John
Transposition  
 1958
U 2,835,623 May 20, 1958 Method of Forming a Unitary Panel of Glass Blocks
Pre-assembled glass block windows and skylight panels
VINCENT, Harold B.
MCDAVITT, Murray
OI Owens-Illinois Glass Co.
 1931
U 1,819,302 August 18, 1931 Oil and Air Break Pothead Disconnect
Pothead disconnect
RAH, Joseph
Insulator G. & W. Electric Specialty Co.
 1934
U Specimen known 1,952,517 March 27, 1934 Insulator
Post type insulator with metal brackets bolted on with U-bolt to stack insulators or attach equipment
STINSON, William L.
STROUP, Charles L.
Post Type Jeffery-Dewitt Insulator Co.
 1927
U 1,628,241 May 10, 1927 Insulator
Post type insulator composed of multiple parts
GODDARD, Walter T.
Post Type Locke Insulator Corp.
 1934
U 1,958,435 May 15, 1934 High Tension Insulator
Post or pedestal insulator with hollow interior filled with dry sand
HAWLEY, Kent Allen
Post Type Locke Insulator Corp.
 1930
U 1,755,032 April 15, 1930 Insulator
Post insulator made up of Hewlett disks
SLEEMAN, Harold P.
Post Type The R. Thomas & Sons Co.
 1878
U 202,578 April 16, 1878 Improvement in Machines for Making Lightning Rods
Portable machine to make lightning rods mounted in a wagon
PATEE, Theodorus H.
Lightning Rod Machine  
 1884
U 297,291 April 22, 1884 Portable Lightning Rod Machine
Portable machine to make lightning rods
PATEE, Theodorus H.
Lightning Rod Machine  
 1930
U 1,744,566 January 21, 1930 Ground Resistance Test Set
Portable instrument to measure electrical ground resistance
MOTT, Everett V.
ROVERE, Lewis H.
ROWLAND, Davidge H.
Testing Western Union Telegraph Co.
 1905
U 805,788 November 28, 1905 Electric Strain Insulator
Porcelain or glass strain insulator in compression
FOSTER, Samuel L.
Strain  
 1932
U 1,860,791 May 31, 1932 Lighting Fixture
Porcelain lighting fixture.
THOMAS, Noah T.
Fixture The Hartford Faience Co.
 1934
U 1,947,118 February 13, 1934 Lighting Fixture
Porcelain lighting fixture
THOMAS, Noah T.
Fixture The Hartford Faience Co.
 1905
U 789,295 May 9, 1905 Electrical Cut-Out
Porcelain knife switch or cutout.
PACKARD, William D.
Cutout  
 1984
U 4,465,900 August 14, 1984 High Voltage Glazed Porcelain Insulators
Porcelain insulator and glaze designed specifically for DC service
SEIKE, Shoji
MITSUMATSU, Yoshio
Porcelain NGK Insulators, Ltd.
 1925
U 1,528,056 March 3, 1925 Golf Tee Marker
Porcelain golf tee marker
HERBERT, Joseph T.
Golf Tee The Brunt Porcelain Co.
 1892
U 483,862 October 4, 1892 Electric Switch
Porcelain electric switch
PAISTE, Harry T.
Switch  
 1895
U 542,924 July 16, 1895 House Wiring Fixture
Porcelain device to allow passage of electrical wires through plaster walls or ceiling
CASE, Charles F.
Miscellaneous  
 1982
U 4,332,913 June 1, 1982 Flux Combination of Barium Oxide and Potassium Feldspar for High Strength Alumina Porcelain Electric Insulators
Porcelain composition with low shrinkage during firing
BOCK, Peter
Porcelain Rosenthal Technik AG
 1922
U 1,409,953 March 21, 1922 Ceramic Insulating Material
Porcelain composition using Sillimanite for high electrical and mechanical strength and low coefficient of expansion, which is particularly suitable for spark plugs
JEFFERY, Joseph A.
Porcelain Jeffery-Dewitt Co.
 1929
U 1,723,174 August 6, 1929 Use of Dumortierite
Porcelain composition use the mineral dumortierite which allows firing at a lower temperature
JEFFERY, Joseph A.
RIDDLE, Frank H.
Porcelain Champion Porcelain Co.
 1927
U 1,631,729 June 7, 1927 Ceramic Insulating Material
Porcelain composition for spark plugs and insulators consisting of Sillimanite and a glassy matrix
JEFFERY, Joseph A.
MONTGOMERY, Earle T.
Porcelain Champion Porcelain Co.
U 1,631,730 June 7, 1927 Ceramic Material
Porcelain composition for spark plugs and insulators consisting of Sillimanite
JEFFERY, Joseph A.
MONTGOMERY, Earle T.
Porcelain Champion Porcelain Co.
 1926
U 1,572,730 February 9, 1926 Batch for Making Ceramic Material and to a Ceramic Material Made Therefrom
Porcelain composition for insulator using manganese
LOCKE, Fred M.
LOCKE, Fred J.
Porcelain  
 1949
U 2,481,729 September 13, 1949 Porcelain Insulator Body
Porcelain clay body with an increased firing range
DEWEY, Benjamin F.
Porcelain Lapp Insulator Co., Inc.
 1963
U 3,116,362 December 31, 1963 Insulating Bushing Assembly with Spring Retaining Means
Porcelain bushing with a retaining spring.
RANKIN, Lawrence H.
Bushing The Hartford Faience Co.
 1989
U 4,845,318 July 4, 1989 Composite Electrical Insulator and Method of Forming Same
Polymer suspension with porcelain core
CLABBURN, Robin
LOOMS, John
Polymer Raychem Limited
 1988
U 4,749,824 June 7, 1988 High Voltage Insulators
Polymer suspension made of silicon elastomer
ORBECK, Tor
Polymer Dow Corning Corp.
 1887
U 362,477 May 3, 1887 Electric Police Call Alarm Box
Police call alarm box with a key
COUGHLIN, John J.
Alarm Box 3/4 to Hern, Prendergast, Oakman
 1937
U 2,082,507 June 1, 1937 Pole for Pin
Pole top pin with hook to support wire during stringing
PITTMAN, Ralph R.
Pin  
 1932
U 1,865,134 June 28, 1932 Pole Top Bracket
Pole top bracket that uses the same length steel insulator pin as that used on the wooden crossarm
PLIMPTON, Bentley A.
Bracket Locke Insulator Corp.
 1936
U 2,048,558 July 21, 1936 Insulator Plunging Machine
Plunging machine to form the shape of bushings and other insulators without the need for turning
MOORE, Stewart L.
Manufacturing Locke Insulator Corp.
 1916
U 1,198,732 September 19, 1916 Plunger for Forming Insulators
Plunger with holes to release pressure (see 838,727 and reissue 12,934)
LOCKE, Louis Peer
Plunger Locke Insulator Mfg. Co.
 1915
U 1,157,612 October 19, 1915 Die for Insulators
Plunger to form suspension petticoats and threaded pinhole
BENNETT, Cornelius Van Dyke
Plunger Locke Insulator Mfg. Co.
 1872
U Specimen known 132,214 October 15, 1872 Improvement in Formers for Segmentally Screw Threaded Insulators
Plunger to form segmented threads
OAKMAN, Samuel
Plunger  
U Specimen known 132,215 October 15, 1872 Improvement in Formers for Segmentally Screw Threaded Insulators
Plunger to form segmented threads
OAKMAN, Samuel
Plunger  
 1937
U 2,068,941 January 26, 1937 Process and Apparatus for Manufacturing Insulators
Plunger to first form the pinhole in a porcelain insulator by first plunging a pinhole without threads then form the threads
BOVARD, Floyd G.
Press The Ohio Brass Co.
 1909
U Specimen known 913,212 February 23, 1909 Insulator Mold
Plunger for press formed segmented threads in pinhole
JOHNSON, Chauncey C.
Plunger 9/20 to John Watson
 1903
U 735,429 August 4, 1903 Insulator Machine
Plunger for press
WATERS, James
Plunger  
 1971
U 3,589,986 June 29, 1971 Method of Fabricating a Glass Forming Apparatus
Plating of molds with Chromium for glass blocks & TV faceplates
NULL, Carroll Thomas
OI Owens-Illinois Glass Co.
 1902
U 693,367 February 18, 1902 Pipe Joint
Pipe joint
BROOKE, Homer
Misc  
 1894
U 527,318 October 9, 1894 Insulator Pin
Pin, wooden with internal reinforcing metal bar
BULLOCK, Edward J.
Pin 1/2 to Merwin Tuttle
 1898
U 609,288 August 16, 1898 Means for Fastening Insulator Pins to Crossarms
Pin, wooden with friction device to hold it in the crossarm
MITCHELL, Loron
Pin  
 1922
U 1,435,225 November 14, 1922 Insulator
Pin, wooded covered with metal for strength and to keep wood dry
GILCHREST, George Irving
Pin Westinghouse Electric & Mfg. Co.
 1903
U Specimen known 740,005 September 29, 1903 Insulator Bracket
Pin, wood pin bracket side with V-groove fits rounded pole to keep it vertical
GILLILAND, James F.
Pin Albert B. Dick
 1916
U 1,167,041 January 4, 1916 Insulator Support
Pin, split metal bolted together below threads
BOOZER, Ralph C.
Pin Joslyn Mfg. & Supply Co.
 1908
U 905,414 December 1, 1908 Metallic Insulator Pin
Pin, split metal
ETTE, Charles G.
Pin Ette Investment Co.
 1917
U 1,219,746 March 20, 1917 Insulator Bracket
Pin, side pin type made of sheet metal
KEPPLER, Lewis F.
Pin  
 1916
U 1,171,127 February 8, 1916 Metallic Cross Arm Pin
Pin, sheet metal formed ribs and threads
LINDHOLM, John G. S.
Pin Anders P. Lindholm
U 1,171,126 February 8, 1916 Insulator Pin
Pin, sheet metal formed cone and threads
LINDHOLM, John G. S.
LINDHOLM, Anders P.
Pin Anders P. Lindholm
 1914
U 1,110,495 September 15, 1914 Insulator Support
Pin, pressed metal to form bin and support
KOBERT, Frank P.
Pin Barnes & Kobert Mfg. Co.
 1908
U 906,787 December 15, 1908 Insulator Pin
Pin, metal with wood cob and flange to nail to crossarm
ETTE, Charles G.
Pin Ette Investment Co.
 1911
U 995,123 June 13, 1911 Insulator Pin
Pin, metal with threaded bushing
ETTE, Charles G.
Pin Ette Investment Co.
 1915
U 1,158,149 October 26, 1915 Insulator Support
Pin, metal with spring for threads (improvement on 856,488)
PEIRCE, JR., Charles L.
Pin  
 1916
U 1,196,272 August 29, 1916 Insulator Pin
Pin, metal with sheet metal support cone and threads
PEIRCE, JR., Charles L.
Pin 1/2 to Hubbard & Co.
U 1,184,963 May 30, 1916 Insulator Pin
Pin, metal with circular groove to receive threaded wooden pin
KENNEDY, Matthew G.
Pin  
U 1,202,418 October 24, 1916 Insulator Support
Pin, metal with bolting bracket and threaded for cementing type thimble
PEIRCE, JR., Charles L.
Pin 1/2 to Hubbard & Co.
U 1,202,419 October 24, 1916 Insulator Supporting Pin
Pin, metal with bolting bracket and spring for threads
PEIRCE, JR., Charles L.
Pin 1/2 to Hubbard & Co.
U 1,202,885 October 31, 1916 Insulator Pin
Pin, metal with bolting bracket and spring for threads
PEIRCE, JR., Charles L.
Pin 1/2 to Hubbard & Co.
 1912
U 1,022,121 April 2, 1912 Insulator Pin
Pin, metal with barbs to hold it in hole in crossarm
BOYLAND, Clarence Joseph
Pin  
 1916
U 1,199,735 September 26, 1916 Insulator Pin
Pin, metal to prevent turning of threaded head (improvement of 1,094,852)
PORTER, John W.
Pin Electric Service Supplies Co.
U 1,207,321 December 5, 1916 Insulator Support
Pin, metal to fit loose in sheet metal thimble
PEIRCE, JR., Charles L.
Pin 1/2 to Hubbard & Co.
U 1,174,607 March 7, 1916 Insulator Supporting Pin
Pin, metal threaded to receive metal bushing cemented in insulator
PEIRCE, JR., Charles L.
Pin  
 1911
U 998,073 July 18, 1911 Electric Insulator
Pin, metal split, hollow threads and cushion material in the split
CHAFFIN, George W.
Pin  
 1909
U 932,570 August 31, 1909 Supporting Pin for Insulators
Pin, metal mounted to side of pole
PERRINE, Frederic A. C.
Pin  
 1914
U Specimen known 1,094,852 April 28, 1914 Insulator Pin
Pin, metal flanged to fit crossarm and interior bolt for attachment to thimble
HECHT, Julius L.
GAPEN, Jotham C.
Pin 1/2 to Electric Service Supplies Co.
 1912
U 1,026,711 May 21, 1912 Sheet Metal Insulator Pin
Pin, metal composed of three flat strips
SHOVER, Barton R.
Pin  
 1916
U 1,201,295 October 17, 1916 Insulator Support
Pin, cast metal with lag screw
HENDEE, Lem E.
Pin  
 1908
U Specimen known 878,679 February 11, 1908 Support for Insulators
Pin, cast iron with U-bolt to clamp on crossarm (Smith-Grip pin)
SMITH, William N.
Pin  
 1895
U 548,669 October 29, 1895 Insulator Pin
Pin with threaded wooden cone and steel bolt
STEPHEN, Charles Wm.
Pin  
 1937
U 2,096,613 October 19, 1937 Multithread Pin Insulator Assembly
Pin with threaded malleable thimble that screws onto the steel pin allowing each adjustment of insulator with conductor
HILL, Gregory C.
Pin Locke Insulator Corp.
 1931
U 1,797,238 March 24, 1931 Insulator Mounting Pin
Pin with threaded lead head for screwing into an insulator
LEMONT, Clarence J.
Pin Line Material Co.
 1884
U 297,699 April 29, 1884 Pin for Electric Insulators
Pin with thimble of soft metal mounted on end of metal pin
KLEIN, John M.
Pin  
 1920
U 1,361,948 December 14, 1920 Insulator
Pin with spring wire extending beyond edge of bottom pin hole
WIDMYER, James L.
Pin  
 1909
U 937,736 October 19, 1909 Insulator
Pin with spring to fit into threads
DUMBOLTON, Perry S.
FRANZ, Frank
Pin  
 1896
U 557,600 April 7, 1896 Insulator
Pin with spring coil
PETERSON, Cyrus A.
Pin  
 1902
U 710,297 September 30, 1902 Insulator
Pin with split wooden cob around curved metal bracket
PEIRCE, Ralph S.
Pin  
 1901
U 687,230 November 26, 1901 Insulator Support
Pin with split threads
HALLETT, Thomas E.
Pin  
 1885
U 321,646 July 7, 1885 Electric Wire Insulator
Pin with spars to fit in threaded pin hole
SCHOONMAKER, Edward T.
Pin 1/2 to John E. Smith
 1933
U 1,894,340 January 17, 1933 Insulator Pin
Pin with soft metal threads
AUSTIN, Arthur O.
Pin The Ohio Brass Co.
 1937
U 2,082,220 June 1, 1937 Insulator Supporting Pin
Pin with soft metal thimble threaded only at the bottom and ridge at the top to engage the threads
SEXTON, Frederick P.
Pin  
 1930
U 1,743,552 January 14, 1930 Pin Type Insulator
Pin with sharp pointed threads that engage the insulator only at the tips of the threads and insulator with shallow depressions in the pinhole rather than threads
KERSCHNER, Richard M.
Pin Hubbard & Co.
 1885
U 310,931 January 20, 1885 Device for Securing Electric Wires to Poles
Pin with plate flange to wrap around pole without drilling a hole
BLOOMHALL, George L.
Pin  
 1915
U 1,143,983 June 22, 1915 Insulator Support
Pin with metal spring coil of varying diameter for threads
MILLER, Charles E.
Pin  
 1908
U 877,242 January 21, 1908 Insulator Pin
Pin with metal shank and bolt
SNAPP, Delos V.
FRAHER, Charles W.
Pin  
U 878,870 February 11, 1908 Insulator Support
Pin with metal shank and bolt
CREAGHEAD, Thomas J.
Pin  
 1928
U 1,691,964 November 20, 1928 Insulator Locking Device
Pin with locking device to fit in threads to secure insulator
DICKEY, Ray S.
CARNAHAN, Paul A.
Pin  
 1895
D 24,190 April 9, 1895 Design for an Insulator Holder
Pin with lag screw for insulator
BEARDSLEY, Lauren S.
Pin  
 1907
U Specimen known 855,253 May 28, 1907 Insulator Pin
Pin with hollow cast iron cone and thimble
LEE, JR., William States
Pin  
 1905
U 803,010 October 31, 1905 Insulator
Pin with grooved insulator on top of crossarm to catch wire if it falls off of insulator
MORRIS, Elmer P.
Pin  
 1896
U 566,468 August 25, 1896 Insulator Support
Pin with flange contacting inner petticoat for support
OLIVER, James B.
Pin The Oliver Iron & Steel Co.
 1926
U 1,612,358 December 28, 1926 Insulator
Pin with cup below the threads to cover the inner skirt of the insulator and help secure the insulator to the pin
BROWN, James M.
Pin Westinghouse Electric & Mfg. Co.
 1923
U 1,444,434 February 6, 1923 Insulator Supporting Pin
Pin with corkscrew for threading into bottom of Electrose insulator
STEINBERGER, Louis
Pin  
 1908
U 883,823 April 7, 1908 Insulator Support
Pin with coiled spring for threads
PEIRCE, JR., Charles L.
Pin Peirce Specialty Co.
U 894,201 July 28, 1908 Insulator
Pin with a threaded wooden block making up one-half of the thimble and metal projection on the other side contacting the threads to keep the wooden half pressed against the pinhole
HALLETT, Thomas E.
Pin  
 1925
U 1,562,836 November 24, 1925 Pin for Insulators
Pin with 3 or 4 soft-metal ribs that form threads to screw into the insulator
KYLE, William D.
Pin Line Material Co.
 1908
U 882,424 March 17, 1908 Insulator Pin
Pin using nail to prevent it from turning
SCHARFHAUSEN, William
Pin Payette Insulator Pin Co.
 1895
U 547,660 October 8, 1895 Insulator Pin and Insulator
Pin through crossarm for insulator top & bottom of crossarm
CARROLL, Charles F.
Pin 1/2 to Thomas Scott
 1950
U 2,500,928 March 21, 1950 Insulator Support
Pin that is light-weight composed of magnesium and aluminum with split end
CASE, Rogers
Pin Transadean Associates, Inc.
U 2,500,927 March 21, 1950 Insulator Pin
Pin that is light-weight composed of magnesium and aluminum
CASE, Rogers
Pin Transadean Associates, Inc.
 1930
U 1,744,674 January 21, 1930 Insulator Pin
Pin that holds insulator at an angle against strain on turns in the conductor
PORTER, Edward Y.
Pin  
 1885
U 330,173 November 10, 1885 Means for Supporting Electrical Wires
Pin split with metal cap to hold wire
TRINGHAM, John Watson
Pin  
 1902
U Specimen known 698,976 April 29, 1902 Sleeve for Protecting Insulator Pins
Pin sleeve to protect pin
LOCKE, Fred M.
Pin  
 1901
U 685,776 November 5, 1901 Insulator Support
Pin sleeve plug with bolt to draw down & expanding sleeve in pin hole
LOCKE, Fred M.
Pin  
U 689,218 December 17, 1901 Electrical Insulator
Pin sleeve (see design 34,211 for U-966)
PARKS, Albert F.
Insulator Lewis Stillwell
 1894
U 514,221 February 6, 1894 Insulator
Pin sleeve
GRAY, Lawrence B.
Pin  
 1909
U 937,140 October 19, 1909 Non-detachable Insulator
Pin permanently fixed to the insulator via slotted pinhole
BARTLETT, Harry
MACCALLUM, Alexander P.
Pin  
 1906
U 836,122 November 20, 1906 High Potential Insulator
Pin of bolt (tapered) in tapered hole (see 685,776)
LOCKE, Fred M.
Pin  
 1911
U 985,707 February 28, 1911 Insulator Support
Pin of bent metal with flat clips to screw in threads in insulator
SCHEIBLE, Albert
Pin  
 1906
U 816,981 April 3, 1906 Cross Arm for Electric or Signal Wires
Pin mounted under the crossarm and curving upward to hold the insulator
ILIOHAN, Anthony H.
Pin  
 1916
U 1,204,196 November 7, 1916 Adjustable Support for Insulators
Pin made of two parts and loop on one end to clamp the insulator.
SCHULZ, Rudolf W.
Pin  
 1907
U 855,261 May 28, 1907 Insulator Pin
Pin made of Electrose with flanges
STEINBERGER, Louis
Pin  
U 853,743 May 14, 1907 Insulating Device
Pin made of Electrose with flange on bottom
STEINBERGER, Louis
Pin  
U 848,506 March 26, 1907 Insulator Pin and Support Therefor
Pin made of Electrose
STEINBERGER, Louis
Pin  
 1941
U 2,228,804 January 14, 1941 Insulator Pin
Pin made of Bakelite and nailed underneath the crossarm
ADAMS, Basil R. S.
Pin  
 1882
U 255,800 April 4, 1882 Insulator for Electrical Conductors
Pin hole with spiral slot to receive pin with side knob
LEWIS, Albert C.
Pin  
 1904
U 778,005 December 20, 1904 Electric Insulator
Pin hole with groove inside of pin hole & on pin
BOOKER, Charles
Pin  
 1870
U Specimen known 105,834 July 26, 1870 Improvement in Telegraph Insulators
Pin hole tapered with grooves to receive wedged, split-end pin
OAKMAN, Samuel
Pin  
 1884
U 297,101 April 22, 1884 Insulator for Telegraph Wires
Pin hole shaped to receive a keyed pin (advertisement eBay 4-2001)
BALDWIN, Luther C.
THURSTON, John C.
Pin  
 1916
U 1,176,333 March 21, 1916 Insulator Pin
Pin formed of sheet metal fitting around crossarm
BAKER, Jason
Pin  
 1894
U 517,634 April 3, 1894 Pin for Insulators
Pin for use with oil cup, CD 244 (see 524,659)
WINSLOW, George H.
Insulator  
 1933
U 1,937,731 December 5, 1933 Insulator
Pin for suspension disk
TAYLOR, John J.
Suspension The Ohio Brass Co.
 1912
U 1,013,250 January 2, 1912 Insulator Pin
Pin for mine insulator comprised of split sheet metal
WILSON, Walter J.
Pin  
 1884
U 303,261 August 12, 1884 Cap for Telegraph and Telephone Poles
Pin designed to cover top of pole to protect the pole from weather
BROOMHALL, George L.
Pin  
 1904
U 775,812 November 22, 1904 Insulator Support
Pin design made from sheet metal with partial threads on one side
FAIRBANKS, Ernest Hayward
Pin  
 1960
U 2,947,802 August 2, 1960 Insulator with Cap in Socket
Pin covered with plastic cap to more securely hold the insulator on the pin
WORTMANN, Adolf
Pin  
 1914
U 1,095,860 May 5, 1914 Insulator Holder
Pin composed of metal wire
HEFFNER, Herman C.
Pin  
 1905
U 779,828 January 10, 1905 Insulator Pin
Pin composed of bolt and threads formed in split metal tube
WOOD, Montraville M.
Pin General Electric Co.
 1896
U 554,664 February 18, 1896 Means for Supporting and Insulating Electric Conductors
Pin coated with water repelling material
ECKERT, Thomas T.
Pin  
 1926
U 1,583,462 May 4, 1926 Supporting Pin for Insulators
Pin bracket that fits around and bolts to crossarm
HENDEE, Lem E.
Pin Line Material Co.
 1916
U 1,184,336 May 23, 1916 Combination Wire Support for Electric Distribution
Pin bracket for poles
FAY, John L.
Bracket W. N. Matthews & Brother Inc.
 1909
U Specimen known 927,701 July 13, 1909 Insulator Support
Pin bracket (metal) for insulator on crossarm
WOODMANSEE, Fay
Pin John Porter and Electric Service Supplies Co.
 1893
U Specimen known 493,434 March 14, 1893 Insulator Pin
Pin base - hollow cast iron with wood threaded cob (dates metal base)
LOCKE, Fred M.
Pin 1/2 to G. Paddock & W. Page
 1902
U 700,570 May 20, 1902 Insulator Supporting Arm
Pin assembly for crossarm
SHARPE, John E.
Pin 1/2 to Newton Bartle
 1914
U 1,110,496 September 15, 1914 Insulator Support for Electric Wires
Pin and metal bracket to fit around crossarm
KOBERT, Frank P.
Pin Barnes & Kobert Mfg. Co.
 1952
U 2,592,030 April 8, 1952 Electric Wire Insulator Support
Pin and bracket to fit over the top and sides of the crossarm
HARDING, Donald D.
Bracket/pin  
U 2,592,031 April 8, 1952 Supporting Structure for Insulators
Pin and bracket made in one piece for easy attachment to crossarm
HARDING, Donald D.
Bracket/pin  
 1902
U 701,246 May 27, 1902 Insulator Pin and Bracket
Pin and bracket for crossarm
BAILEY, Elbert T.
Pin  
 1906
U 821,746 May 29, 1906 Insulator
Pin - method of cementing into insulator sleeve and attaching to insulator
RICHARD, Augusto
Pin Societa Ceramica Richard-Ginori
 1893
U 505,309 September 19, 1893 Insulator Pin and Bracket Machine
Pin - machine for making wooden pins
EISENHART, Charles A.
Pin  
 1916
U 1,174,287 March 7, 1916 Insulator Support
Pin - hollow metal & bolted to crossarm for CD 257
ROSENFELD, Mortimer C.
Insulator  
 1888
U 386,986 July 31, 1888 Electric Insulator Peg
Pin (wooden) tapered below threads & to have metal rod inserted, too
JOSLIN, William E.
Pin  
 1893
U 505,123 September 19, 1893 Insulator Pin
Pin (wooden) strengthened by metal rod
O'NEILL, James J.
Pin  
 1892
U 472,529 April 12, 1892 Insulator Support
Pin (metal) with wooden cob for glass insulators
DOREN, Dennis
Pin  
 1904
U 754,123 March 8, 1904 Insulator Pin
Pin (metal) with webs made to reduce weight
BULLARD, James H.
Pin  
U 751,831 February 9, 1904 Insulator Pin
Pin (metal) with webs and circular member to support inside surface of skirt
BULLARD, James H.
Pin  
 1908
U 906,003 December 8, 1908 Insulator Pin
Pin (metal) with split threads for cushion material and wedge end in crossarm
ETTE, Charles G.
Pin Ette Investment Co.
 1905
U 806,887 December 12, 1905 Insulator Pin
Pin (metal) with ribbed cast iron base
GODDARD, Walter T.
Pin Locke Insulator Mfg. Co.
 1909
U 937,515 October 19, 1909 Insulator Pin
Pin (metal) with hollow threaded end
DORFF, Conrad J.
Pin Fredric Greer
 1912
U 1,045,536 November 26, 1912 Insulator Pin
Pin (metal) with elastic washer under threads to firmly hold insulator, prevent breakage
ETTE, Charles G.
Pin Ette Investment Co.
 1907
U 856,488 June 11, 1907 Insulator
Pin (metal) using spring for threads
PEIRCE, JR., Charles L.
Pin Peirce Specialty Co.
U 856,801 June 11, 1907 Insulator
Pin (metal) using spring for threads
PEIRCE, JR., Charles L.
Pin Peirce Specialty Co.
 1929
U 1,712,860 May 14, 1929 Transposition Pin
Pin (metal) through crossarm for transposition
WEIMAR, Robert
Pin  
 1909
U 910,799 January 26, 1909 Insulator Pin
Pin (metal) split & bent on each end to hold thimble on pin & pin in crossarm
EDMISTON, Samuel J.
Pin  
 1906
U 823,461 June 12, 1906 Insulator Pin
Pin (metal) made of wire loops and sliding grooved, ribbed bar for threads
BULLARD, James H.
Pin  
 1913
U 1,065,983 July 1, 1913 Insulator
Pin (metal) formed from sheet metal
STOCKWELL, Millard E.
Pin  
 1916
U 1,192,690 July 25, 1916 Insulator Supporting Structure
Pin (metal) for mounting on crossarm in combination with a threaded thimble
SCHAAKE, William
Pin Westinghouse Electric & Mfg. Co.
 1904
U 772,553 October 18, 1904 Insulator Pin
Pin (metal) composed of bars or rods attached to a metal plate
BULLARD, James H.
Pin  
 1906
U 814,613 March 6, 1906 Insulator Pin
Pin (metal) bracket using split sheet metal threads
MACKEAN, Frank
Pin  
 1892
U 476,207 May 31, 1892 Insulator Pin
Pin
LOCKE, Fred M.
Pin  
 1893
U 510,809 December 12, 1893 Insulator Pin
Pin
LOCKE, Fred M.
Pin 1/2 to G. Paddock & W. Page
 1894
U 524,100 August 7, 1894 Supporting Insulator for Electric Wires
Pin
BEARDSLEY, Lauren S.
Pin  
 1895
D 24,249 April 23, 1895 Design for an Insulator Holder
Pin
BEARDSLEY, Lauren S.
Pin  
 1896
U 565,944 August 18, 1896 Insulator Support
Pin
TOWARD, Charles P.
Pin  
 1902
U 701,063 May 27, 1902 Insulator Pin
Pin
LOCKE, Fred M.
Pin  
 1905
U 796,977 August 8, 1905 Insulator Pin
Pin
LOCKE, Fred M.
Pin  
 1903
U 743,672 November 10, 1903 Elastic Piano Support
Piano leg support composed of a metal spring
BAEUMLE, John
Piano  
 1872
U 128,534 July 2, 1872 Improvement in Combined Fire Extinguishers and Lightning Rods
Perforated water pipes running the crest of the building with lightning rods attached for the purpose of extinguishing a fire
CARL, Nelson
Lightning Rod Extinquisher 1/2 to Martin Baxter
 1929
U 1,710,880 April 30, 1929 Insulator Stack
Pedestal type stackable insulators with metal flanges that can be easily adjusted
LAPP, John S.
Pedestal Lapp Insulator Co., Inc.
 1934
U 1,983,569 December 11, 1934 Pedestal Switch Insulator
Pedestal insulator to support switch gear or bus bar
ROWLAND, Davidge H.
Pedestal Locke Insulator Corp.
 1930
U 1,776,557 September 23, 1930 Pedestal Insulator
Pedestal insulator similar to suspension disk with metal cap and pin to bolt other units to
HAWLEY, Kent A.
Pedestal Locke Insulator Corp.
 1866
U 51,935 January 9, 1866 Improvement in Insulating Telegraph Wires
Paraffin and rubber insulated wire
ELY, Alfred B.
Paraffin  
 1961
U 2,996,845 August 22, 1961 Structural Panel and Building Wall Construction Utilizing Same
Panellized glass block wall construction
CIPRIANI, Chester C.
STARK, Charles H.
KI Kimble Glass Co.
 1897
U 584,477 June 15, 1897 Insulator
Pair of third rail insulators set on both sides of the rail fitting in the contour of the sides of the rail.
LIBBY, Sam H.
Third Rail General Electric Co.
 1896
U 561,912 June 9, 1896 Packing Case for Bottles
Packing case to protect bottles for shipment
OAKMAN, Samuel
Bottle  
 1905
U Specimen known 806,588 December 5, 1905 Electrical Insulator
Oval shaped nail-knob with saddle top for cap to fit over the saddle
SINCLAIR, Herbert
Knob  
 1896
U 563,938 July 14, 1896 Ornament Indicator for Weather Vanes
Ornamental weathervane with balls or pendants hanging from the four directions and a ribbed ball below the lightning rod point
MUNSON, Alvin J.
Weathervane  
 1930
U 1,783,272 December 2, 1930 Support for Transmission Lines
Orientation of tower supporting transmission line using flux control arcing harms (see 1,783,271)
AUSTIN, Arthur O.
Transmission The Ohio Brass Co.
 1956
U 2,738,838 March 20, 1956 Glass Block Ventiliating Device
Operable glass block vent
SUTTER, John H.
OI Owens-Illinois Glass Co.
 1932
U 1,866,804 July 12, 1932 Means for Utilizing Wood Poles to Aid Insulators
On wood poles, connect the steel pins with a conductor and fuse to aid grounding an insulator struck by lightning and reduce the chance of burning the crossarm or pole
HAWLEY, Kent A.
Transmission Locke Insulator Corp.
 1868
U 76,960 April 21, 1868 Improvement in Insulators for Telegraphs
Oil, wax or rubber saturated insulator to improve same (Brown p. 57)
VARLEY, Cromwell F.
Oil  
 1906
U 839,666 December 25, 1906 Built up Insulator
Oil used in hidden reservoir of multipart insulator made of Electrose
STEINBERGER, Louis
Oil  
 1934
U 1,944,383 January 23, 1934 Oil Bath Insulator
Oil type insulator using oil cup attached to edge of insulator and protective cover attached to prevent contamination from fog or rain
WEILL, Robert
Oil  
 1904
U 771,297 October 4, 1904 Insulator
Oil reservoir for transformer insulator
CHESNEY, Cummings C.
Oil Stanley Electric Mfg. Co.
 1876
U 176,073 April 11, 1876 Improvement in Lamp Collars
Oil lamp collar with grooves for oil return
SCHNEIDER, Bennet B.
HU  
 1875
U 161,912 April 13, 1875 Improvement in Modes of Forming Sheet Metal Threaded Collars
Oil lamp collar
TAPLIN, Alvin
HU  
 1876
U 175,022 March 21, 1876 Improvement in Lamp Collars
Oil lamp collar
BROWN, George W.
HU The Bristol Brass and Clock Co.
 1891
U 461,631 October 20, 1891 Insulating Support for Electric Conductors
Oil insulator
HEWETT, Robert J.
Oil  
 1894
U Specimen known 524,659 August 14, 1894 Insulator
Oil cup with means to support the cup from the insulator (see 517,634)
WINSLOW, George H.
Oil  
 1893
U 506,002 October 3, 1893 Insulating Support for Metallic Circuits
Oil cup insulator to support short crossarm for two insulators
COUSENS, Alfred C.
Oil Charles Stone
 1878
U Specimen known 201,615 March 26, 1878 Improvement in Insulators for Telegraph Wires
Oil cup insulator
JOHNSON, Walter C.
PHILLIPS, Samuel E.
Oil  
 1956
T No text available 622,885 March 13, 1956 Trademark
OI modern logo trademark
 
OI  
 1914
U Specimen known 1,090,234 March 17, 1914 Insulating and Supporting Mechanism
Ohio Brass third rail support insulator designed to be use on narrower ties
ROGERS, Joseph W.
Third Rail 1/2 to Nathan Shute
 1896
U 562,528 June 23, 1896 Wire Holder
Odd wireholder with two fins or ears that hold the wire
HAKANSSON, Louis M.
Wireholder  
 1948
U 2,442,165 May 25, 1948 Insulator
Odd under crossarm insulator with diagonal slot to insert wire into center slot and means to nail the insulator to the crossarm
GEROW, Kenneth Norris
Miscellaneous  
 1930
U 1,778,152 October 14, 1930 Multiple Skirt Suspension Insulator
Odd two-disk suspension made in one piece with metal caps on each end
HAWLEY, Kent A.
Suspension Locke Insulator Corp.
 1907
U 873,456 December 10, 1907 Wire-Carrying Cross Arm and Insulator Therefor
Odd system using a split crossarm, split insulators fitted into notches in crossarm where top half of crossarm holds the insulators in place
OTTINGER, Edwin C.
Miscellaneous Jennie E. Ottinger, Walter S. Ottinger, Sr., Samuel H. Bair
 1913
U 1,057,184 March 25, 1913 Insulating Means
Odd system for suspending power lines
STEINBERGER, Louis
Electrose  
U 1,072,524 September 9, 1913 Insulator
Odd system for suspending power lines
STEINBERGER, Louis
Electrose  
U 1,072,525 September 9, 1913 Suspension Insulator
Odd system for suspending power lines
STEINBERGER, Louis
Electrose  
 1955
U 2,703,820 March 8, 1955 Insulator Assembly
Odd pintype insulator with teepee top that screws down to hold a pair of wires
LAYMAN, Robert E.
Miscellaneous  
 1908
U 879,068 February 11, 1908 Insulator for High Tension Currents
Odd electrose insulator with large hood over the top
STEINBERGER, Louis
Electrose  
 1929
U 1,702,235 February 12, 1929 System of Line Insulation and Insulators Therefor
Odd Electrose insulator
STEINBERGER, Louis
Insulator  
 1917
R Specimen known 14,312 June 5, 1917 Device for Connecting Outside Wires to Buildings
Odd cylindrical knob with off-set screw hole and external grooves for attaching wires to buildings (reissue of 1,213,011) [Angle Insulator Co.]
RAGOTZKY, Philip C.
Knob  
U Specimen known 1,213,011 January 16, 1917 Device for Connecting Outside Wires to Buildings
Odd cylindrical knob with off-center screw hole and external grooves for attaching wires to buildings (see reissue 14,312 on 6-5-1917) [Angle Insulator Co.]
RAGOTZKY, Philip C.
Knob  
 1908
U 883,227 March 31, 1908 Insulator
Odd cylindrical insulator with slot of top to hold line wire and threaded exterior to screw into a hold bored in the crossarm and a set screw on top to secure the line wire
PADDEN, Edward F.
Miscellaneous  
 1907
U 869,873 November 5, 1907 Insulator
Odd cylindrical insulator mounted vertically in a slitted bracket
BASS, Duncan M.
Miscellaneous  
 1934
U 1,961,434 June 5, 1934 Adjustable Insulator Bracket
Odd bracket for two spools to hold line wire at varying angles when mounted in a tree with a lag screw
SMEAD, Donald G.
Bracket  
 1904
U 751,459 February 9, 1904 Line Insulator
Odd arrangement of two ribbed spools supporting a third ribbed spool to support the line wire
CHESNEY, Cummings C.
Miscellaneous  
 1915
U 1,132,281 March 16, 1915 Reactive Coil
Odd arrangement for a choke coil around Hewlett fish-tail strain insulators.
MOODY, Walter S.
Coil General Electric Co.
 1944
U 2,362,433 November 7, 1944 Nozzle
Nozzle for glass block dehydrating mechanism
FERGUSON, John E.
MCCREERY, Cecil W.
OI Owens-Illinois Glass Co.
 1884
U 296,330 April 8, 1884 Insulator for Line Wires of Mechanical Telephones
Non-electrical (!!) insulator to suspend wires of mechanical telephones!!!
GILLILAND, James F.
Non-electrical John Bennet and August Meyer
 1888
U 386,925 July 31, 1888 Electrical Non-Conductor
Non-conducting composition material composed of mica and glue used to coat cheese cloth and made in thin sheets, which are then coated with shellac to repel moisture
LEE, Charles Tennant
WAITE, Charles N.
Composition 1/2 to The Gould & Watson Co.
 1930
U Specimen known 1,755,971 April 22, 1930 Insulator
Neon, knob to support wires for neon sign (""spook"" insulator)
SMALLEY, Robert C.
Neon Claud Neon Lights, Inc.
 1939
U Specimen known 2,173,510 September 19, 1939 Conducting Holder for Luminous Tube Terminals
Neon terminal holder
BELLOWS, Lewis F. R.
Neon  
 1908
U Specimen known 878,302 February 4, 1908 Insulator
nail-knob, square shaped with reversible matching halves
MARKEL, Harley R.
Knob  
 1919
U Specimen known 1,311,483 July 29, 1919 Insulator
nail-knob, cap has radial ridges flush with rim of cap and base has ribbed grooves.
AMOS, Frank M.
Knob Wheeling Tile Co.
 1907
U Specimen known 855,208 May 28, 1907 Insulator
nail-knob with top part fitting inside the bottom and with an offset nail hole. Specimen was found at Star Porcelain Co. dump with embossed marking IDEAL.
SINCLAIR, Herbert
Knob  
 1908
U Specimen known 907,251 December 22, 1908 Electrical Wiring Knob
nail-knob with side projection on each part to secure the wire.
LAWRENCE, Harry W.
Knob  
 1920
U 1,326,962 January 6, 1920 Sectional Non-Rotative Insulating Knob for Supporting Electric Wires
nail-knob with nail split in the center
POINDEXTER, Alfred M.
Knob  
 1891
U Specimen known 464,770 December 8, 1891 Clamp for Electric Wires
Nail-knob with matching caming grooves. Rotating cap tightens it against the insulated covered wire and the screw or nail secures the cap in that position.
GREEN, John Jay
BROWN, George C.
Knob  
 1904
U Specimen known 753,399 March 1, 1904 Combination Bracket and Knob for Electric Conductors
nail-knob with hole in the top and two side groove for tie-wire (see Western Electrician 4-29-1905)
HUNT, Emory C.
Knob 1/2 to Charles Snyder
 1903
U Specimen known 745,999 December 8, 1903 Insulator
nail-knob with conical projection on the bottom part that fits in a conical recess in the top part and projections in the wire groove and cap to secure the wire.
BOWER, Sigmund
Knob 1/2 to Joseph Levy
 1960
U 2,935,553 May 3, 1960 Electrical Knob Insulator
Nail-knob with center bushing to secure nail
SHOWMAN, Robert L.
Knob A. B. Chance Co.
 1910
U Specimen known 965,723 July 26, 1910 Insulator
nail-knob with ball holder. Known as the Paragon knob, which was sold by the Paragon Electric Co.
MALTHANER, John F.
Knob  
 1917
U Specimen known 1,218,181 March 6, 1917 Insulator Knob
nail-knob made by Cook Pottery Co. known as the ""Wedge"".
HOMER, John W.
Knob  
U Specimen known 1,232,354 July 3, 1917 Insulator
nail-knob
MAIR, John E.
Knob Brunt Tile & Porcelain Co.
 1920
U Specimen known 1,329,656 February 3, 1920 Insulator
Nail knob made by Triangle M (Illinois Electric Porcelain Co.) with captivated nail. (DIXIE NAILIT)
FARGO, Arthur H.
Knob Charles Tremain
 1909
U Specimen known 919,386 April 27, 1909 Insulator
Nail knob made by Cook Pottery Co. known as the ""Wedge"" for holding two wires (see article 7273)
SCHAUB, Ferdinand
Knob  
 1898
U Specimen known 600,475 March 8, 1898 Electrical Insulator and Method of Making Same
Multiple thin porcelain shells fused together with glaze, ""glaze-filling"" method, U-928 & U-928A. (see patent 601,195) (see patent gb1898-0006235) Patent was owned by the R. Thomas & Sons Co.
BOCH, John W.
Insulator  
 1950
U 2,532,478 December 5, 1950 Building Block
Multiple celled glass block
BRIDGES, Donald A.
OI Owens-Illinois Glass Co.
 1915
U 1,129,520 February 23, 1915 Insulating Body for Electrical Apparatus
Multipart, theory to shape insulator to conform to electrical fields (typical spelling is FORTESCUE, Charles Le G.) (see 1,259,385)
RANDALL, Karl C.
FARNSWORTH, Sidney W.
FORTESCUE, Charles Le Geyt
Multipart Westinghouse Electric & Mfg. Co.
 1925
U 1,544,148 June 30, 1925 Method of Connecting Insulators
Multipart, method of cementing sections with solder
GOUVERNEUR, Minor F. H.
Multipart Locke Insulator Corp.
U 1,558,498 October 27, 1925 Method of Making Insulators
Multipart, cementing of sections (see Pinco catalog page 3)
PECK, John M.
BENNETT, Cornelius Van Dyke
RYAN, James W.
Multipart The Porcelain Insulator Corp.
 1926
U 1,610,085 December 7, 1926 Insulator
Multipart, alternating elastic bands & roughened surface aids cementing
GODDARD, Walter T.
Multipart Locke Insulator Corp.
 1917
U 1,251,013 December 25, 1917 Insulator Joint
Multipart without cement held by adjoining metal bands
GODDARD, Walter T.
Multipart  
 1919
U 1,290,673 January 7, 1919 Sectional Pin Insulator
Multipart with sections screwed together with threaded metal bands
SONNEBORN, Sol S.
Multipart  
 1923
U Specimen known 1,458,754 June 12, 1923 Insulator
Multipart with outer angular, flush, mating surfaces and cemented
GODDARD, Walter T.
Multipart Locke Insulator Corp.
 1906
U Specimen known 838,163 December 11, 1906 High Tension Insulator
Multipart with multiple petticoats under skirts (M-4325C, M-4415, M-4600) (see ID 5166)
BAUM, Frank G.
Insulator  
 1929
U 1,733,067 October 22, 1929 Insulator
Multipart with metal cap to prevent damage due to temp changes
MARVIN, Richard H.
Multipart The R. Thomas & Sons Co.
 1907
U 868,122 October 15, 1907 Electric Insulator
Multipart with glass skirt and two-piece head similar to Locke 25
POINAN, Francis J.
Multipart  
 1929
U 1,716,123 June 4, 1929 Insulator
Multipart with external cement joints covered with tar for RFI
GODDARD, Walter T.
Multipart Locke Insulator Corp.
 1923
U Specimen known 1,478,912 December 25, 1923 Insulator
Multipart with cement around lower edge of shell
PLIMPTON, Bentley A.
Multipart 1/2 to The Porcelain Insulator Co.
 1922
U 1,426,421 August 22, 1922 Condenser Cemented Sectional Insulator
Multipart using metallic cement and metal sheath covering skirts
SONNEBORN, Sol S.
Multipart Hopewell Insulation & Mfg. Co.
 1914
U 1,093,479 April 14, 1914 Insulator
Multipart using interchangeable shells cemented to leave air pocket
SANFORD, JR., Joseph A.
Multipart The R. Thomas & Sons Co.
 1918
U 1,258,211 March 5, 1918 Insulator Support
Multipart supporting pin
GODDARD, Walter T.
Multipart Locke Insulator Mfg. Co.
 1919
U Specimen known 1,311,067 July 22, 1919 Insulator
Multipart similar to Faradoid patent 1,374,998 (see reissue 14,888 on 6-22-1920)
GODDARD, Walter T.
Multipart  
 1914
U 1,093,480 April 14, 1914 Insulator
Multipart same as 1,093,479 with plug to block cement from air pocket
SANFORD, JR., Joseph A.
Multipart The R. Thomas & Sons Co.
 1910
U Specimen known 954,329 April 5, 1910 Insulator Protecting Apparatus
Multipart protected by arcing ring
NICHOLSON, Lloyd C.
Multipart  
U Specimen known 966,583 August 9, 1910 Insulator Protecting Apparatus
Multipart protected by arcing ring
NICHOLSON, Lloyd C.
Multipart  
 1929
U 1,739,637 December 17, 1929 Insulator
Multipart porcelain pedestal insulator with threaded holes in the metal cap to bolt another insulator on top
HAWLEY, Kent A.
Pedestal Locke Insulator Corp.
U 1,735,560 November 12, 1929 Insulator for Withstanding Fog Conditions
Multipart porcelain insulator with heating elements embedded in the surface to keep surface of insulator dry during fog
AUSTIN, Arthur O.
Fog Type The Ohio Brass Co.
 1921
U Specimen known 1,374,998 April 19, 1921 Insulator
Multipart porcelain insulator of Faradoid design (spelling for other patents: GILCHREST, George Irving)
FORTESCUE, Charles Le G.
GILCHREST, George I.
Multipart Westinghouse Electric & Mfg. Co.
 1907
U 853,744 May 14, 1907 High Tension Insulator
Multipart pintype insulator with large top skirt
STEINBERGER, Louis
Electrose  
 1904
U Specimen known 761,760 June 7, 1904 Insulator
Multipart lily shell design (M-3740)
CHESNEY, Cummings C.
Insulator Stanley Electric Mfg. Co.
 1922
U Specimen known 1,431,137 October 3, 1922 Joint for Articles of Ceramic and Similar Materials and Method of Producing Same
Multipart joined by sand, glaze-welding and/or differential shrinkage
AUSTIN, Arthur O.
Multipart The Ohio Brass Co.
 1923
U 1,456,960 May 29, 1923 Joint for Articles of Ceramic and Similar Materials and Method of Producing Same
Multipart joined by sand, glaze-welding and/or differential shrinkage
AUSTIN, Arthur O.
Multipart The Ohio Brass Co.
 1931
U 1,823,676 September 15, 1931 Insulator with Nested Parts
Multipart insulators with metal cap in cement joint of the outer two joints to add strength to the insulator
AUSTIN, Arthur O.
Manufacturing The Ohio Brass Co.
 1907
U 842,941 February 5, 1907 Insulator
Multipart insulator with groove on one side and bracing pin to hold against the strain of the line wire
CLARK, Walter G.
Multipart  
 1941
U 2,250,044 July 22, 1941 Insulator
Multipart insulator with glazed sanded surfaces to improve strength of cap
CROSKEY, Carl D.
ROWLAND, Davidge H.
Multipart Locke Insulator Corp.
 1926
U 1,599,580 September 14, 1926 Insulator
Multipart insulator with bowl underneath to balance electrical field
MILLER, Frederick H.
Multipart Westinghouse Electric & Mfg. Co.
 1908
U 893,265 July 14, 1908 Insulator
Multipart insulator where parts are screwed together
RICHARD, Augusto
Multipart  
 1911
U 1,010,011 November 28, 1911 Sectional Insulator
Multipart insulator to support high tension conductors in substation
AUSTIN, Arthur O.
Multipart The Ohio Brass Co.
 1914
U 1,109,470 September 1, 1914 Post Insulator
Multipart insulator to support high tension conductors in substation
SANFORD, JR., Joseph A.
Multipart The R. Thomas & Sons Co.
 1916
D 49,538 August 22, 1916 Design for an Insulator
Multipart insulator style (Canadian Porcelain Co. president)
GODDARD, Walter T.
Pin-type  
 1905
U 806,509 December 5, 1905 Composite Insulator
Multipart insulator made of Electrose with parts screwed together
STEINBERGER, Louis
Multipart  
 1914
U 1,122,326 December 29, 1914 High Potential Insulator
Multipart insulator made of Electrose
STEINBERGER, Louis
Multipart  
 1916
U 1,191,186 July 18, 1916 Insulator
Multipart insulator composed of easily assembled identical shells
JACKSON, Ray P.
Multipart Westinghouse Electric & Mfg. Co.
 1908
U 904,592 November 24, 1908 Electrical Conductor Support
Multipart insulator attached on top to a bracket and has hook pin screwed in pinhole to hang line wire below
ALLEN, John Scott
Multipart  
 1927
U 1,649,853 November 22, 1927 Sectional Insulator
Multipart design with nested parts forming the cement joints
PECK, John M.
Multipart The Porcelain Insulator Corp.
 1920
R Specimen known 14,888 June 22, 1920 Insulator
Multipart design similar to Faradoid 1,374,998 (reissue of 1,311,067)
GODDARD, Walter T.
Multipart Locke Insulator Mfg. Co.
 1930
U 1,758,462 May 13, 1930 Insulator
Multipart cementing technique using Portland cement with a resilient alumina cement followed by a high humidity curing process
OSBORNE, David Henry
Multipart Electric Service Supplies Co.
 1932
U 1,877,630 September 13, 1932 High Tension Insulator
Multipart cementing technique using a resilient layer or shaped sleeve
SCHEID, Johann Friedrich
Multipart Hermsdorf-Schomburg-Isolatoren G. M. B. H.
 1920
U 1,360,896 November 30, 1920 Cemented Insulator
Multipart cementing procedure evacuate air from cement, coat with tar
CREIGHTON, Elmer
Multipart General Electric Co.
 1925
U 1,558,499 October 27, 1925 Insulator Construction
Multipart cementing of sections using resilient cement and non-resilient cement
PECK, John M.
Multipart The Porcelain Insulator Corp.
 1928
U 1,672,059 June 5, 1928 Insulator
Multipart cement joint with alternating elastic bands & coated surfaces
COOK, William S.
Multipart  
 1913
U 1,069,782 August 12, 1913 Electric Insulator
Multipart cable clamp using metal crown cap
HILLIARD, John D.
Multipart  
 1915
U 1,159,409 November 9, 1915 Electric Insulator
Multipart bus bar type that can be screwed together
MULLER, Auguste R.
Multipart  
 1918
U Specimen known 1,284,975 November 19, 1918 Sanded Insulator and Method of Making Same
Multipart and suspension sanded joints (see 1,536,749)
AUSTIN, Arthur O.
Multipart The Ohio Brass Co.
U Specimen known 1,284,976 November 19, 1918 Insulator
Multipart and suspension cemented metal part designs
AUSTIN, Arthur O.
Multipart The Ohio Brass Co.
 1925
U 1,536,749 May 5, 1925 Insulator
Multipart (RFI) with sanded, metal coated groove & cement (see 1,284,975)
AUSTIN, Arthur O.
Multipart The Ohio Brass Co.
 1919
U 1,291,713 January 21, 1919 Separable Part Insulator
Multipart (& suspension) with cemented, threaded metal shells screwed together
AUSTIN, Arthur O.
Multipart The Ohio Brass Co.
 1928
U 1,695,458 December 18, 1928 Insulator
Multipart (& suspension disk) with spacing cap and molten metal as cement
GODDARD, Walter T.
Multipart Locke Insulator Corp.
 1907
U 871,490 November 19, 1907 Insulator Pin Mounting
Mounting for hollow steel pin on a steel tower
DUNCAN, John D. E.
Pin  
 1956
U Specimen known 2,756,958 July 31, 1956 Insulator Mounting Clip
Mounting clip for an electric fence insulator (see patent 2,609,418)
BINNS, Jack N.
DUGLE, Thomas E.
ALT, Alvin F.
Electric Fence Planet Products Corp.
 1961
U 2,975,499 March 21, 1961 Ceramic Tunnel Kiln
More fuel efficient tunnel kiln for burning ceramic ware and produces a more uniform quality of porcelain.
LAPP, Grover W.
Tunnel Kiln  
 1892
U 483,646 October 4, 1892 Process of Making Artificial Mica Sheets for Electrical Insulation
Molding process to make artificial sheets of mica
DYER, Arthur H. S.
Mica Eugene Munsell & Co.
 1955
U 2,699,628 January 18, 1955 Caster Cup
Molded top supporting plate supported by resilent material
AUER, Betty
Piano  
 1905
U 801,461 October 10, 1905 Mold for Forming Insulators
Mold with hinge for forming ""Combination Safety"" CD 139 (attorney H. P. Denison)
KRIBS, Anthony
Mold R. V. Lamberson
 1860
U 30,063 September 18, 1860 Mold for Glass Jars
Mold to form annular groove around opening of fruit jar to receive cap and sealing wax
HEMINGRAY, Robert
Jar  
 1910
U 952,279 March 15, 1910 Mold in Which to Form Plastic Articles
Mold to form a slotted-top, twist-lock, self-tying glass insulator (see