U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 267
of said disk, astationary finger forming an electric terminaladapted to be contacted by said arm, a bat- ter3T, and a bell, said frame, arm, finger, bell,and battery being in an electric circuit, anda switch for opening and closing said circuit,interposed in said circuit, substantially as… … WITNESSES: ATTORNEYS. United States Patent Office* EMANUEL R. HEYSER, OF LEON,- MEXICO.WATCHMANS ELECTRIC TIME-RECORDER. SPECIFICATION forming part of Letters Patent No. 482,251, dated September 6,1892. Application filed Maroh 2,1892, Serial No. 423,496. (No model.) To all whom it may concern,: Be…
Clocks and watches
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