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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '174') AND (category.subclass = '210') ORDER BY date ASC, patent, type

Total of 108 patents found where: Class is '174'; Subclass is '210';

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T / S Patent Date Description Patentee Category Assigned To
 1851
U Specimen known 8,418 October 14, 1851 Improvement in Insulators for Telegraph Wires
Metal or cast iron insulator with cupped dry area at bottom. Glass poured in with a conductor supporting iron rod embedded in the glass, and the cupped is coated or lined with glass, porcelain, or enamel. The bottom skirt is slanted inward 45 degrees to prevent water from splashing up inside wetting the interior surface. This feature was utilized in U-983 and U-984 made by the U. S. Pottery Co. in Bennington, VT.
BATCHELDER, John M.
Metal  
 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  
 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  
 1880
U 228,077 May 25, 1880 Telegraphic and Telephonic Insulator
Wooden insulator with paper thimble and covering
JOBBINS, William F.
Wood  
 1885
U 319,447 June 9, 1885 Insulator
Wire groove projections through metal cover to contact wire
BROOMHALL, George L.
Wire  
 1890
U 437,685 October 7, 1890 Insulator
Coating on exterior of insulator to color code line
GAYNOR, Thomas F.
Coating The Gaynor Electric Co.
 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  
 1894
U 514,221 February 6, 1894 Insulator
Pin sleeve
GRAY, Lawrence B.
Pin  
 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  
U Specimen known 573,092 December 15, 1896 Insulator
Insulator of two materials combined
LOCKE, Fred M.
Insulator  
 1897
U 592,505 October 26, 1897 Electrical Insulator
Protective coating of elastic material and wire groove protector
BARBOUR, Wellington
Protective Coat  
 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  
U Specimen known 601,195 March 22, 1898 High Potential Insulator
Inner skirt extending down to the crossarm or through the crossarm to prevent arcing from the petticoat edges to the pin, U-944. (see patent 600,475) (see patent gb1898-0006235)
BOCH, John W.
Insulator The R. Thomas & Sons Co.
U Specimen known 605,109 June 7, 1898 Insulator
Insulator with sleeve to protect pin
LOCKE, Fred M.
Insulator  
 1901
U 689,218 December 17, 1901 Electrical Insulator
Pin sleeve (see design 34,211 for U-966)
PARKS, Albert F.
Insulator Lewis Stillwell
 1902
U 696,958 April 8, 1902 Insulator for High Potential Currents
Glazeweld technique using thin layer at joint with air space between shells
GAERTNER, Rudolf
Glazeweld Karlsbader Kaolin-Industrie-Gesellschaft
U Specimen known 702,660 June 17, 1902 Process of Making Insulators
Glazewelding (Boch variation) with extra glaze to leave air space, biscuit fired, then glaze
LOCKE, Fred M.
Glazeweld  
U Specimen known 702,661 June 17, 1902 Insulator and Process of Manufacturing Same
Glazewelding (Boch variation) vitrified shells, pour molten glaze, then cool
LOCKE, Fred M.
Glazeweld  
U 712,440 October 28, 1902 Insulator
Self-tying with slot and screw clamp
SHREFFLER, James L.
Self-tying Miscellaneous  
 1903
U Specimen known 728,805 May 19, 1903 Insulator
M-2335, M-2785, M-2795 & M-2796 with eave drain & spout (see 664,301)
LOCKE, Fred M.
Insulator  
U 732,088 June 30, 1903 Insulator for High Tension Currents
Bracket clamped around pole for insulator pin
LEMSTROM, Karl Selim
Bracket  
U Specimen known 745,284 November 24, 1903 Insulator
Glazewelding (Boch variation) shells fused together to leave air space, U-926A
LOCKE, Fred M.
Insulator  
 1904
U Specimen known 761,760 June 7, 1904 Insulator
Multipart lily shell design (M-3740)
CHESNEY, Cummings C.
Insulator Stanley Electric Mfg. Co.
U 776,789 December 6, 1904 Insulator
Skirts are horizontal
LOCKE, Fred M.
Skirt  
 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  
U 786,690 April 4, 1905 Multiple Hood Insulator
Electrose multipart pin type (Brown p. 70)
STEINBERGER, Louis
Electrose  
U 787,442 April 18, 1905 Insulator for Electric Wires
Protective shield
FLYNT, Samuel B.
MAIDEN, Leaman A.
Protective Shield  
U 796,977 August 8, 1905 Insulator Pin
Pin
LOCKE, Fred M.
Pin  
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  
U 829,646 August 28, 1906 Insulator
Self-tying with crown clamp on multipart
GODDARD, Walter T.
Self-tying Miscellaneous Locke Insulator Mfg. Co.
U 839,666 December 25, 1906 Built up Insulator
Oil used in hidden reservoir of multipart insulator made of Electrose
STEINBERGER, Louis
Oil  
 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  
U 853,743 May 14, 1907 Insulating Device
Pin made of Electrose with flange on bottom
STEINBERGER, Louis
Pin  
U 855,261 May 28, 1907 Insulator Pin
Pin made of Electrose with flanges
STEINBERGER, Louis
Pin  
U 855,355 May 28, 1907 High Potential Insulator
Electrose multipart insulator for high voltages
STEINBERGER, Louis
Electrose  
U 868,122 October 15, 1907 Electric Insulator
Multipart with glass skirt and two-piece head similar to Locke 25
POINAN, Francis J.
Multipart  
 1908
U Specimen known 880,203 February 25, 1908 Insulator
Suspension insulator with petticoat
DUNCAN, John D. E.
Suspension  
U 893,265 July 14, 1908 Insulator
Multipart insulator where parts are screwed together
RICHARD, Augusto
Multipart  
U 895,171 August 4, 1908 Cable Hanger
Cable hanger for two part Duncan suspension
DUNCAN, John D. E.
Suspension  
U 902,262 October 27, 1908 Insulator Protector
Covering for insulator
SPARKS, Robert Romney
Covering  
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  
U 905,940 December 8, 1908 High Tension Insulator
Rainshed for conductor supported by crown
SEMENZA, Guido
Rainshed  
 1909
U 909,935 January 19, 1909 Protected Insulator
Protective shield
REA, John H. B.
Protective Shield  
U 922,477 May 25, 1909 Electric Line Insulator
Self-tying with side grooves
HENRY, Robert
Self-tying Miscellaneous  
U 930,750 August 10, 1909 Insulator
Protective shield & splash preventor on pin under insulator
GRAHAM, Charles M.
Protective Shield  
U 930,751 August 10, 1909 Reinforced Wooden Support for Insulators
Splash preventor horizontal on pin under insulator
GRAHAM, Charles M.
Splash  
 1910
U 947,516 January 25, 1910 Insulator
miscellaneous horizontal insulator with conductor supported on periphery of crown
GODDARD, Walter T.
Miscellaneous Locke Insulator Mfg. Co.
U Specimen known 954,329 April 5, 1910 Insulator Protecting Apparatus
Multipart protected by arcing ring
NICHOLSON, Lloyd C.
Multipart  
U 959,929 May 31, 1910 High Voltage Switch
High voltage switch utilizing a string of suspension insulators
GODDARD, Walter T.
Switch Locke Insulator Mfg. Co.
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.
 1911
U 998,359 July 18, 1911 High Voltage Insulator
Suspension type
LOCKE, Fred M.
Suspension Locke Insulator Mfg. Co.
U 1,001,137 August 22, 1911 Insulator Protector
Arcing device attached to top and bottom of insulator
GODDARD, Walter T.
Arcing Locke Insulator Mfg. Co.
 1913
U 1,065,737 June 24, 1913 Insulator and Support
Spiral conical insulator for tightening of line wire
SLONECKER, Abiram J.
Spiral  
U 1,069,782 August 12, 1913 Electric Insulator
Multipart cable clamp using metal crown cap
HILLIARD, John D.
Multipart  
 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.
 1915
U 1,128,424 February 16, 1915 Insulator
Suspension multipart insulator fitted with arcing horns
DUNCAN, John D. E.
Suspension  
U 1,159,409 November 9, 1915 Electric Insulator
Multipart bus bar type that can be screwed together
MULLER, Auguste R.
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.
U 1,205,971 November 28, 1916 Electric Insulator
Threads (metallic) or sleeve attached electrolytically
BUSCHETTI, Claudis
Thread  
 1917
U Specimen known 1,249,820 December 11, 1917 Insulator
Composition insulator with side cable clamp
PHARO, Harry A.
SCHAAKE, William
Composition Westinghouse Electric & Mfg. Co.
U 1,251,013 December 25, 1917 Insulator Joint
Multipart without cement held by adjoining metal bands
GODDARD, Walter T.
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.
 1919
U 1,290,673 January 7, 1919 Sectional Pin Insulator
Multipart with sections screwed together with threaded metal bands
SONNEBORN, Sol S.
Multipart  
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.
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  
 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.
 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.
 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.
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.
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.
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.
 1924
U 1,484,569 February 19, 1924 Ceramic Body
Method of making a suspension disk by inserting a fired porcelain part inside the bottom of an unfired disk, then firing the disk, which shrinks around the insert securing a cemented pin inside
SCHEID, Johannes Friedrich
Suspension H. Schomburg & Shone
 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.
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.
 1926
U 1,610,085 December 7, 1926 Insulator
Multipart, alternating elastic bands & roughened surface aids cementing
GODDARD, Walter T.
Multipart Locke Insulator Corp.
 1927
U 1,647,695 November 1, 1927 Method of Assembling Insulators
Manufacturing method of using adhesive to hold shells together before injecting cement and sealing edges of the cured cement joint
HAWLEY, Kent Allen
Manufacturing Locke Insulator Corp.
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.
 1928
U 1,672,059 June 5, 1928 Insulator
Multipart cement joint with alternating elastic bands & coated surfaces
COOK, William S.
Multipart  
U 1,677,346 July 17, 1928 Insulator
Fogbowl suspension
JACKSON, Ray P.
Fog Type Westinghouse Electric & Mfg. Co.
U 1,694,415 December 11, 1928 Insulator
Under crossarm type (see 955,661)
GORDON, Chester S.
Under 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.
 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.
U 1,730,170 October 1, 1929 Insulator
Design with metal pin and metal projections to prevent arc-over
SMITH, Harold B.
Suspension Westinghouse Electric & Mfg. Co.
U 1,730,171 October 1, 1929 Insulator
Design with metal pin and metal projections to prevent arc-over
SMITH, Harold B.
Suspension Westinghouse Electric & Mfg. Co.
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.
 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.
 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.
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.
 1932
U 1,854,459 April 19, 1932 Insulator
Skirts upturned with drain holes
DIENNER, John A.
Skirt  
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.
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.
 1933
U 1,927,106 September 19, 1933 Insulator
Carrier circuit insulator with metal skirt coated with insulating material
WILSON, Leon T.
Carrier American Telephone & Telegraph Co.
 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  
U Specimen known 1,955,609 April 17, 1934 Insulator
U-856A fogbowl
ROWLAND, Davidge H.
Insulator Locke Insulator Corp.
U 1,967,654 July 24, 1934 Insulator
Fog type multipart & suspension insulator with porous coating, wire screen for RFI
AUSTIN, Arthur O.
Fog Type The Ohio Brass Co.
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.
 1935
U Specimen known 1,994,281 March 12, 1935 Insulator
Fog type multipart & suspension insulator similar to oil types with inverted mating cup
LUSIGNAN, JR., Joseph T.
Fog Type The Ohio Brass Co.
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.
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.
 1937
U Specimen known 2,088,433 July 27, 1937 Fog and Dust Insulator
U-816 series
PLIMPTON, Bentley A.
Insulator 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
U 2,215,152 September 17, 1940 Insulator
Rubber insert
HOSFIELD, Glenn E.
Rubber  
 1943
U 2,317,799 April 27, 1943 Line Insulator
Insulator composed of a metallic hollow shell coated with ceramic material
PERLES, Maurice
Insulator Mycalex Corp. of America
 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
 1964
U 3,141,063 July 14, 1964 Toughened Glass, Pin Type Insulator
Glass tempering method
EDWARDS, Derrik R.
Glass Pilkington Brothers Limited

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