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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	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	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	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	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	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	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	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	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	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	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	745,284	November 24, 1903	Insulator Glazewelding (Boch variation) shells fused together to leave air space, U-926A	LOCKE, Fred M.	Insulator
		1904
U	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	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	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	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	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	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	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	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	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	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	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	1,458,754	June 12, 1923	Insulator Multipart with outer angular, flush, mating surfaces and cemented	GODDARD, Walter T.	Multipart	Locke Insulator Corp.
U	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	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	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	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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