Search the Insulator Patent Reference Library:

Build your search criteria. The patent must match all the values specified.
Select patent types: Utility   Design   Reissue
Patent number:
Date:
Year between: and
Patentee starting with:
City:
State:
Assigned To starting with:
Description containing:
Category:
Class:    Subclass:
Click Search when complete:
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 = '171') ORDER BY date ASC, patent, type

Total of 26 patents found where: Class is '174'; Subclass is '171';

View a patent by clicking on the patent number. You can sort by any of the columns by clicking on the column name.

T / S Patent Date Description Patentee Category Assigned To
 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.
 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  
 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.
 1901
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.
 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 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  
 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
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 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  
 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 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 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 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 843,844 February 12, 1907 Third Rail Insulator
Third rail insulator		 REDMAYNE, Robert Norman
 Third Rail  
 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
 1909
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  
 1917
U 1,236,668 August 14, 1917 Insulator Clamping Device
Clamp for crown of large insulator		 BROWN, James M.
 Clamp Westinghouse Electric & Mfg. Co.
 1926
U 1,602,873 October 12, 1926 Support for Electrical Fixtures
Bus bar support for top of insulator		 ANSINGH, Herman K.
 Bus Bar Westinghouse Electric & Mfg. Co.
 1932
U 1,876,579 September 13, 1932 Insulator
Iron bus bar support cap cemented to top of an insulator		 AUSTIN, Arthur O.
 Cap The Ohio Brass Co.
 1934
U 1,950,646 March 13, 1934 Insulator
Iron cap cemented on the top of an insulator for switch connection		 AUSTIN, Arthur O.
 Cap The Ohio Brass Co.
U 1,977,957 October 23, 1934 Bus Bar and Bushing Connection
Connector to hold bus bar inside a bushing		 STEVENS, Leland S.
 Bushing Locke Insulator Corp.
U 1,978,649 October 30, 1934 Bus Bar and Bushing Connection
Connector to hold bus bar inside a bushing		 ROBERTS, Charles W.
 Bushing Locke Insulator Corp.
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  

Total of 0.01 seconds