Search the Insulator Patent Reference Library:

Total of 100 patents found where: Class is '174'; Subclass is '163R';

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T / S	Patent	Date	Description	Patentee	Category	Assigned To
		1849
U	6,779	October 9, 1849	Supporter for Telegraph Wires Hook encased in metal shell (also House-top insulator?)	LIVINGSTON, L. R. ROGGEN, J. J. ADAMS, Calvin KENDALL, Amos VAIL, Alfred	Hook
		1851
U	8,419	October 14, 1851	Insulator for Telegraph Wires Hook embedded in metal shell (with guta percha) for bolting	ROBBINS, Zenas C.	Hook
		1858
U	20,916	July 13, 1858	Improved Device for Securing Lightning Rods Lightning rod insulator (glass) with spring clip to hold rod	SCHRAGE, Victor	Lightning Rod Insulator
U	22,188	November 30, 1858	Improved Supporting Insulator for Lightning Rods Lightning rod insulator (glass) and bracket to support rod	MCLEOD, N. N.	Lightning Rod Insulator
		1863
U	39,613	August 18, 1863	Improvement in Insulators for Lightning Conductors Lightning rod insulator (glass) to hold conductors with bracket	EAGLES, Edwin	Lightning Rod Insulator	1/2 to J. H. Guion
		1865
U	47,141	April 4, 1865	Improvement in Insulators for Telegraphs Bracket (wooden) with recessed bowl to hold ramshorn [Smithsonian]	VAN CHOATE, S. F.	Bracket
		1866
U	58,594	October 9, 1866	Improvement in Telegraph Insulators Hook with metal shell fastened at right angle to pole	BURNAP, William H. BRASSINGTON, John D.	Hook
		1867
U	65,886	June 18, 1867	Improvement in Insulators for Telegraph Wires Hook with wooden block, insulator with dead air space and wooden disk, glass lugs	DAY, Alfred B.	Hook
U	66,054	June 25, 1867	Improvement in Lightning Rod Insulators Lightning rod insulator (glass) with tie wire to hold conductor	STEBBINS, Darius	Lightning Rod Insulator	1/2 to E. Morse
R	2,717	August 6, 1867	Improvement in Insulators for Telegraph Wires Hook cemented in glass & metal case with sulfur (reissue of 45,221)	BROOKS, David	Hook
U	70,052	October 22, 1867	Improvement in Telegraph Insulators Hook in insulating material inserted into crossarm (references Wade insulator) [Smithsonian]	WAITE, John L.	Hook
U	70,727	November 12, 1867	Improvement in Insulators for Lightning Rods Lightning rod insulator (glass) with sheet metal strip under shingles	LOCKHART, Thomas J. LOCKE, Josiah	Lightning Rod Insulator
		1868
U	75,365	March 10, 1868	Improvement in Insulators Hook and block inserted in a bracket	CASTLE, Alfred H.	Hook
U	79,951	July 14, 1868	Improvement in Insulators Hook, improvement on 75,365	CASTLE, A. H.	Hook
		1869
U	94,037	August 24, 1869	Improvement in Insulators Lightning rod insulator slotted for self-locking	SCOTT, Franklin	Lightning Rod Insulator
		1870
U	103,122	May 17, 1870	Improvement in Insulators for Telegraphic Wire Hook with metallic oxide cement to hold hook or pin	BAKER, Robert B.	Hook
		1871
U	112,281	February 28, 1871	Improvement in Insulators for Telegraph Wires Hook, new shape	ROBBINS, Zenas C.	Hook
		1872
U	123,198	January 30, 1872	Improvement in Telegraphic Insulators and Brackets Cylindrical, slotted insulator with flanges and bracket	ROBERTSON, John	Cylinder
		1883
U	269,933	January 2, 1883	Insulator for the Suspension of Electrical Wire Conductors Hook insulator of ""gelatinized or vulcanized fiber""	HIGGS, Paget COURTENAY, William	Hook
		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
		1885
U	316,469	April 28, 1885	Electric Wire Insulator Insulators and supporting rail	LOCKE, Joseph BOWKER, William	Insulator	Themselves and Robert Williams
		1888
U	378,971	March 6, 1888	Insulator Block of glass inverted & head combination secured to crossarm by wire	NEAL, Lewis M.	Block
		1889
U	402,752	May 7, 1889	Insulator CD 289.9 (CD 1182), under crossarm type with triple petticoat	LOCKE, Fred M. LAPP, John	Insulator
		1890
U	419,642	January 21, 1890	Insulator for Electric Wires Split ring with split ring holder and lag screw	CORNOG, Isaac P.	Split
U	421,819	February 18, 1890	Insulator Blocks (2) to hold wire and pole system	DAVY, John W.	Block
		1891
U	459,843	September 22, 1891	Insulator Hanger knob	THOMAS, Van A.	Hanger	1/2 to Andrew Ross
U	461,631	October 20, 1891	Insulating Support for Electric Conductors Oil insulator	HEWETT, Robert J.	Oil
		1892
U	481,132	August 16, 1892	Insulator Device and insulator for suspending wires using one or more insulators encased in a metal sphere with wire suspended by means of a bolt or hook set in the center of the two halves of the spherical insulator (see 286,681)	BOWEN, William J.	Insulator	William Hubbard
		1893
U	507,299	October 24, 1893	Trolley Wire Insulator Cylinder of wood used for trolley wire hanger	WILLIAMS, Mowry S.	Wood	1/2 to Stewart Worden
		1896
U	573,966	December 29, 1896	Insulator Hanger Bracket for knobs	DUNCAN, Robert	Bracket
		1897
U	584,823	June 22, 1897	Combined Bracket and Insulator Combined bracket and insulator with bracket made of non-conducting material such as glass or porcelain	MEAD, George Warren	Bracket
U	587,216	July 27, 1897	Wire Holder Glass insulator to hold line wire with a threaded bottom to fit in a metal bracket	LAWRENCE, Joseph B.	Miscellaneous
		1898
U	600,607	March 15, 1898	Insulator Support for Electrical Conductors Bracket with supporting strap for crossarm	BENEDICT, Fred	Bracket
		1900
U	650,445	May 29, 1900	Insulator Strain type with ""Z"" shaped groove	ZERTUCHE, Emilio	Strain
		1901
U	667,103	January 29, 1901	Insulator Slack wire knob with metal suspension clip	SARGENT, Howard R.	Slack Wire	General Electric Co.
U	679,308	July 30, 1901	Insulator Slack wire knob, bracket and suspension clip	GEISENHONER, Henry	Slack Wire	General Electric Co.
		1902
U	698,097	April 22, 1902	Electrical Insulator Bushing and bracket to support conductor cable	BALL, Henry Price	Bushing	General Incandescent Light Co.
U	701,246	May 27, 1902	Insulator Pin and Bracket Pin and bracket for crossarm	BAILEY, Elbert T.	Pin
		1903
U	726,651	April 28, 1903	Electric Wire Support Glass insert in crossarm to insulate a steel pin that supports the conductor	CULLEN, Beauregard	Pin
U	732,088	June 30, 1903	Insulator for High Tension Currents Bracket clamped around pole for insulator pin	LEMSTROM, Karl Selim	Bracket
U	746,362	December 8, 1903	Insulator Hanger or Bracket Bracket for knobs	MCFEATERS, George H.	Bracket
		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.
U	772,553	October 18, 1904	Insulator Pin Pin (metal) composed of bars or rods attached to a metal plate	BULLARD, James H.	Pin
U	778,420	December 27, 1904	Device for Attaching Insulators to Crossarms miscellaneous device for attaching insulator to crossarm	LOCKE, Fred M.	Miscellaneous
		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
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.
		1906
U	824,055	June 19, 1906	Insulator Crossover	ACLY, Harry M.	Crossover	Stanley Electric Mfg. Co.
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
		1907
U	855,355	May 28, 1907	High Potential Insulator Electrose multipart insulator for high voltages	STEINBERGER, Louis	Electrose
		1908
U	876,160	January 7, 1908	Clamp Bracket to hold insulator spool near end of crossarm	FARIS, Winn D.	Bracket	1/2 to Frank B. CHAPIN
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
U	907,834	December 29, 1908	Insulator Slack wire holder with nail spike	MARSHALL, George B.	Slack Wire
		1909
U	927,321	July 6, 1909	Insulator Wire grooves undercut to hold wire	BOND, John T.	Wire
U	937,984	October 26, 1909	Insulator Bracket Bracket to mount insulator in mortar between bricks	BROWN, Edward V.	Bracket	1/2 to Adolph Day
		1910
U	946,623	January 18, 1910	Insulator for Electric lines Metal cap cemented on crown to hold wire in crown or side groove	VARNEY, Theodore	Cap	Westinghouse Electric & Mfg. Co.
		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.
U	1,012,724	December 26, 1911	Insulator Support Bracket for pin-type insulator with wooden cob & mounted on a pipe	SESSIONS, Edson O.	Bracket	Fay Woodmansee
		1912
U	1,026,711	May 21, 1912	Sheet Metal Insulator Pin Pin, metal composed of three flat strips	SHOVER, Barton R.	Pin
U	1,028,534	June 4, 1912	Insulator Miscellaneous	BRADY, Charles C.	Miscellaneous
U	1,042,902	October 29, 1912	Insulator Miscellaneous using Mason jar lid base attached to support	FOUTZ, Jeremiah N.	Miscellaneous
		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
		1914
U	1,084,147	January 13, 1914	Support for Electric Service Wires Bulbous insulator mounted on a crossarm pin to allow tie-off and running multiple service wires from the main power conductor	HOPKINS, Guy	Service Drop
U	1,090,686	March 17, 1914	Insulator Clamp Self-tying via clamp	COOK, William A.	Self-tying Miscellaneous
U	1,095,860	May 5, 1914	Insulator Holder Pin composed of metal wire	HEFFNER, Herman C.	Pin
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.
		1915
U	1,125,742	January 19, 1915	Cable Supporting Insulator Clamp type	SESSIONS, Edson O.	Clamp Type	Electrical Engineers Equipment Co.
U	1,147,065	July 20, 1915	Insulator Clamp and Bracket Steel bracket and pin combination that fits around the crossarm	ZIEG, Joseph	Bracket
		1916
U	1,176,333	March 21, 1916	Insulator Pin Pin formed of sheet metal fitting around crossarm	BAKER, Jason	Pin
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.
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.
		1917
U	1,217,032	February 20, 1917	Insulator for Electric Wires Self-tying twist lock type	LYON, Cody	Self-tying Twist
U	1,221,893	April 10, 1917	Safety Repair Device for High Voltage Transmission Lines Clamp to hold conductor to insulator while repairs are made	NEELEY, George S.	Clamp	1/2 to Thomas O. Moloney
U	1,236,668	August 14, 1917	Insulator Clamping Device Clamp for crown of large insulator	BROWN, James M.	Clamp	Westinghouse Electric & Mfg. Co.
		1918
U	1,271,596	July 9, 1918	Insulator Support Bracket for knobs	MAYER, Walter S.	Bracket	Electric Service Supplies Co.
U	1,284,110	November 5, 1918	Insulator and Bracket Bracket for spool type insulator	JOHNSON, Ewald E.	Bracket
U	1,284,976	November 19, 1918	Insulator Multipart and suspension cemented metal part designs	AUSTIN, Arthur O.	Multipart	The Ohio Brass Co.
		1919
U	1,315,633	September 9, 1919	Insulator Support Bracket for knobs	MCFEATERS, George H.	Bracket
U	1,324,559	December 9, 1919	Insulating Support Suspension cap and pin to improve strength of connection	LANYON, Samuel H.	Suspension
		1920
U	1,333,640	March 16, 1920	Electric Insulator Suspension with bolted on metal cap (Italy)	SEMENZA, Guido	Suspension
		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.
		1924
U	1,494,023	May 13, 1924	Insulator Bracket Bracket made of stamped metal to fit upright in hole in crossarm or over top of crossarm to hang down and spool insulator mounted underneath	ROLFE, Charles A.	Bracket
		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	1,574,964	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.
U	1,596,931	August 24, 1926	Insulator Slack wire cylindrical insulator and mounting clip	JOYCE, Bryan P.	Slack Wire
		1928
U	1,663,007	March 20, 1928	Electric Conductor Support Insulator attachments to support equipment (see 1,274,555 and 1,574,964)	JACOBS, Ernest H.	Equipment	Electrical Engineers Equipment Co.
U	1,687,556	October 16, 1928	Reduction of Attenuation Due to the Conductance Losses in Cross Arms and Insulator Pins CD 122.4; Metal thread thimble for wooden pins carrier circuits connected electrically to other pins or brackets on the same crossarm to reduce leakage losses	GORDON, Chester S. LOWE, James T.	Pin	American Telephone & Telegraph Co.
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.
		1930
U	1,779,501	October 28, 1930	Insulator Wireholder with lag screw	STEINMAYER, Alwin G.	Wireholder	Line Material Co.
		1931
U	1,806,170	May 19, 1931	Bracket and Dead-End Insulator Double deadend bracket with two spool insulators.	LAW, Stanley W.	Bracket/wireholder
		1932
U	1,886,984	November 8, 1932	Insulator Structure Radio strain insulator for antennas	STATON, Harry C.	Radio
		1933
U	1,892,798	January 3, 1933	Cable Rider Cable support tray (specimens are not uncommon to find)	ELMER, William B. AVILA, Charles F.	Miscellaneous	Charles B. Elmer
U	1,914,437	June 20, 1933	Insulator Wireholder with lag screw	KYLE, William D.	Wireholder	Line Material Co.
U	1,937,964	December 5, 1933	Insulator Support for Tower or Mast Type Antenna Insulator for supporting radio tower or mast antenna	JENNER, Ralph L.	Antenna	Lapp Insulator Co., Inc.
		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
		1936
U	2,050,510	August 11, 1936	Cable Saddle Cable rack insulator for supporting heavy cables by simply laying the cable in the rack insulator.	THOMS, Alexander P. KELLER, Carl A.	Cable Rack
		1937
U	2,081,832	May 25, 1937	Insulator Wireholder with hole and lag screw	MORGENSTERN, Joseph BRASTY, Joseph	Wireholder
		1939
U	2,144,537	January 17, 1939	Insulator Construction Metal end cap for post insulator	JENNER, Ralph L.	Post Type	Lapp Insulator Co., Inc.
		1940
U	2,218,004	October 15, 1940	Porcelain Insulator Screw Bracket Wireholder with lag screw	LEMONT, Clarence J.	Wireholder	Line Material Co.
		1952
U	2,609,418	September 2, 1952	Adjustably Mounted Insulator Assembly Electric fence insulator with hexagon head used with metal mounting bracket (see patent 2,756,958)	BINNS, Jack N. DUGLE, Thomas E. ALT, Alvin F.	Electric Fence
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.

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