U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 381
or rotating thesame, electro-magnets with hinged armatures 65operating in connection with projectionsformed on said rotary disk for governing orcontrolling its said rotary motions, and atimepiece or clock for completing the circuitof said electro-magnets at prearranged times, 70substantially as… … (No Model.) No. 486,458 6 Sheets—Sheet 2. J. GANSS. TIME STAMP. Patented Nov. 22, 1892. JWg.2.
Clocks and watches
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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