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Lock for Toy Banks

Description: Patent for a lock for toy banks. Illustrations included.
Date: June 22, 1909
Creator: Hansen, Christian
Partner: UNT Libraries Government Documents Department

Nut-Lock.

Description: Patent for a nut lock for railroad tracks, which will prevent rail bolts from unscrewing.
Date: June 8, 1909
Creator: Mills, Thomas M.
Partner: UNT Libraries Government Documents Department

Electric Signaling System for Railways

Description: Patent for an electric signaling system for railways which allows the engineer to see whether there is any danger or obstruction ahead on the track, and send and receive signals to and from a distant point. Illustrations included.
Date: June 15, 1909
Creator: Lacroix, Fred
Partner: UNT Libraries Government Documents Department
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