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Traction-Engine Frame and Engineering Device.

Description: Patent for a frame and steering device for traction engines allowing easier movement and control of a traction device because the engine can be steered through one of the traction wheels.
Date: May 30, 1911
Creator: Slimp, William L.
Partner: UNT Libraries Government Documents Department

Switch.

Description: Patent for a switch for trolley lines that can be triggered from inside the trolley car.
Date: December 12, 1911
Creator: Torrence, Otis M.
Partner: UNT Libraries Government Documents Department

Tire-Tightener

Description: Patent for a tire tightener. Illustrations included.
Date: February 21, 1911
Creator: Slay, Frank F. & Henry, Squire M.
Partner: UNT Libraries Government Documents Department
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