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in subjects: "switches"  
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Switch Attachment.

Description: Patent for a switch attachment that consists of a derailing guard, a side track rail, an adjustable shoe that pivots next to the rail, a vertical groove in the end of the shoe, and a swinging free arm.
Date: April 3, 1894
Creator: Warren, Governor D. & Casey, James
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Railroad-Crossing.

Description: Patent for a railroad crossing that "consists in certain devices organized in a manner to secure automatic alignment of a series of movable rail-sections with the main rails of a track on which a train is traveling in the direction of the crossing, the approach of the train setting in motion the devices by which the rail-sections are controlled, and thus dispensing with an attendant at the crossing to set the contrivance for the safe passage of the train through the crossing" (lines 12-22).
Date: October 11, 1892
Creator: Knight, Mosses G.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Electric Switch.

Description: Patent for an electric switch meant for the Edison three-wire system. It provides "means whereby the translating devices on either side of the middle wire may be supplied with electricity to the exclusion of those on the opposite side, the return-current from said translating devices being transmitted by way of the middle wire" (lines 11-16).
Date: November 12, 1895
Creator: Mottram, William T. M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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