U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 251
troller co-operating with the saidcircuit-terminals to hold the same normally 60closed, and an electro-magnet in the local cir-cuit of the time-operating magnets governingthe operation of the circuit-controller, sub-stantially as described. In testimony whereof I have signed my 65name to this… … /:,tcc S, &: INVENT0R. l Y- ~2>. AX)aJUUx^o -AjJ.tlitio United States Patent Office, ADELBERT II. THORP, OF TOLEDO, OHIO.RAILWAY TIME-SIGNAL. SPECIFICATION forming part of Letters Patent No. 481,723, dated August 30, 1892. Application filed September 26, 1891. Serial No. 406,960, (No model.)…
Clocks and watches
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