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Adjustable Bench Hook.

Description: Patent for a new and improved bench hook. This design "consists in a bench-hook constructed with a plate carrying a sliding bar, to which is adjustably secured a hook. The sliding bar and hook are locked in place by a clamp and cam attached to the plate, and the plate and its attachments are locked to the bench-front by a stationary lug attached to the plate, and a moveable lug attached to a lever pivoted to the said plate and locked in place by a cam, so that the said hook can be readily adjus… more
Date: July 22, 1884
Creator: Cooper, Harry
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Air-Compressor.

Description: Patent for "new and useful improvements for air-compressors" (lines 5-6), with instructions and illustrations.
Date: July 20, 1886
Creator: Harrold, Mahlon
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Air Motor.

Description: Patent for a new and improved air-motor. This design is of an "air-motor, consisting of an engine, single-acting air-pump, air-receiver, and the double-acting exhaust-pump, with the valves and connections . . . [and] the levers and segments" (lines 81-87).
Date: July 21, 1885
Creator: Koniakowsky, Alois M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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