U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 159
time-registering mechanism, consistingof an arm adapted to engage with said escape-ment device, a walking-beam connected withsaid arm, and means to move said walking-beam adapted to be operated by said electro- magnet, substantially as and for the purposeset forth. 10 This specification signed and… … Jrcr/isrv (ocuiSijxi /farc/i^ aa. (No Model.) No. 478,284, J. C. KOCH. WORKMANS TIME RECORDER. 3 Sheets—Sheet 2. Patented July 5, 1892,
Clocks and watches
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