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in subjects: "switch-stands"  
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Switch Stand and Lock

Description: Patent for an improvement in switch-stand and locks, being that they cannot be picked or tampered with.
Date: July 21, 1914
Creator: Maupin, John D.; Allen, Harry E. & Baldwin, Springfield
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Switch Stand for Dynamo Stations.

Description: Patent for a new and improved switch stand for dynamo stations. This design "is to provide a simple and efficient switch for introducing dynamos into an electric circuit and removing them therefrom . . . [The] invention consists in . . . outside circuit-wires . . . switch contacts arranged in pairs, there being as many pairs of such contacts as there are dynamos belonging to the circuit. It also consists[,] . . . with the pairs of contacts, of corresponding pairs of swinging arms, the arms of e… more
Date: March 26, 1889
Creator: Stewart, Robert Edward
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Automatic Railway-Switch.

Description: Patent for a railway-switch by enabling the switch operate automatically when a train is passing by. Illustration is included.
Date: June 25, 1901
Creator: Wilson, James Newton
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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