Search the Insulator Patent Reference Library:

Total of 42 patents found where: Class is '191'; Subclass is '32';

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T / S	Patent	Date	Description	Patentee	Category	Assigned To
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
U	320,633	June 23, 1885	Electric Conductor Third rail insulator flared down away from the pin.	DAFT, Leo	Third Rail
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
U	402,836	May 7, 1889	Insulator and Holder for Electric Railways Third rail insulator clamps the rail upsidedown.	JENNINGS, Byron	Third Rail
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
U	563,482	July 7, 1896	Insulating Support for Rails or Electric Railways Third rail pin type insulator	HALEY, Patrick	Third Rail
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
U	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
U	644,646	March 6, 1900	Insulator for Use on Electric Railways Third rail insulator	THOMAS, James THOMAS, William R.	Third Rail
U	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
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	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
U	761,553	May 31, 1904	Third Rail Support Third rail insulator made of Electrose	STEINBERGER, Louis	Third Rail
U	762,297	June 14, 1904	Third Rail Insulator Third rail insulator with enameled top and bottom plate	FRITZE, Henry L.	Third Rail
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
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
U	780,316	January 17, 1905	Third Rail Insulator Cylindrical third rail insulator with inner core of cement to secure the metal cap and metal support to the insulator.	WINSOR, Paul	Third Rail
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
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
U	877,804	January 28, 1908	Insulator for Heavy Conductors Third rail insulator made of Electrose.	STEINBERGER, Louis	Third Rail
U	917,501	April 6, 1909	Third Rail Insulator Electrose third rail insulator.	STEINBERGER, Louis	Third Rail
U	928,709	July 20, 1909	Insulator for Third Rails Third rail insulator made of Electrose	STEINBERGER, Louis	Third Rail
U	932,523	August 31, 1909	Insulator for Third Rails Third rail insulator.	WEAVER, Eugene M.	Third Rail
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
U	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
		Bleecker S. Barnard
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
		Essex Co.
U	908,136	December 29, 1908	Third Rail Insulator Third rail insulator (Ohio Brass)	RANDOLPH, Leonard M.	Third Rail	Essex Co.
U	922,951	May 25, 1909	Third Rail Insulator Conical shaped third rail insulator.	RANDOLPH, Leonard M.	Third Rail	Essex Co.
		Frank J. Guernsey
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
		General Electric Co.
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.
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.
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.
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.
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.
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.
		Henry Bradford
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
		Johan M. Anderson
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
		Robert W. Lyle
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
		Societe Anonyme des Manufactures Des Glaces et Produits Chimiques de Saint-Gobain
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
		The Ohio Brass Co.
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.

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