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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 = '193') ORDER BY date ASC, patent, type

Total of 11 patents found where: Class is '174'; Subclass is '193';

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T / S Patent Date Description Patentee Category Assigned To
 1896
U 574,101 December 29, 1896 Insulator
Third rail insulator
MARTIN, Charles B.
Third Rail General Electric Co.
 1897
U 579,725 March 30, 1897 Insulator and Holder for Electric Railways
Trolley hanger insulator suspended from a cable. It is composed of an inverted insulator cup and a metal cover.
KEITHLY, Willie C.
Trolley Hanger  
 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.
 1905
U 779,659 January 10, 1905 Insulator
Suspension type
LOCKE, Fred M.
Suspension  
 1910
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.
 1917
U 1,246,461 November 13, 1917 Strain Insulator
Suspension metal cap design
PLIMPTON, Bentley A.
Suspension  
 1918
U 1,266,711 May 21, 1918 Strain Insulator
Suspension metal cap design
PLIMPTON, Bentley A.
Suspension  
 1919
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.
 1924
U 1,490,080 April 15, 1924 Insulator
Suspension with ribbed pin and cap & notched cap for better adhesion of cement
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.
U 1,506,863 September 2, 1924 Suspension Insulator
Suspension with metal cap on top and underneath
PLIMPTON, Bentley A.
Suspension  
 1935
U 2,011,137 August 13, 1935 Insulator
Suspension cap with spring rollers to allow slippage of the cap and cement to improve strength
AUSTIN, Arthur O.
Suspension The Ohio Brass Co.

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