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Semaphore.

Description: Patent for a semaphore with an enclosure for the operating gearing in signaling devices for railway trains. It incloses the operating gearing so that ice does not interfere with its operation and water does not touch the gearing.
Date: January 16, 1912
Creator: Van Zandt, Luther H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Saw Tester

Description: Patent for a device that tests and trains saws for cotton gins. Detects cups and kinks in the saw and prevent the saw from being burned.
Date: January 2, 1912
Creator: Cass, Thomas M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Air-Cycle

Description: Patent for an air cycle that allows a person to fly by pedaling. Illustrations included.
Date: January 9, 1912
Creator: Price, Joseph H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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