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Electric Railway-Signal.

Description: Patent for an electric railway signal, which is attached to train engines and signals that a train is stopped to other trains by a light reflecting forwards and lights the platform for passengers by having a light reflecting backwards behind the engine.
Date: April 14, 1908
Creator: Stafford, George A.
Partner: UNT Libraries Government Documents Department

Sliding Valve for Steam-Engines or the Like

Description: Patent for a sliding valve for steam-engines or the like that is "simpler, less expensive, and otherwise more convenient and advantageous for use" (lines 21-24) including an illustration and instructions.
Date: June 8, 1915
Creator: Williamson, Jason & Williamson, Elmer
Partner: UNT Libraries Government Documents Department
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