U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 647
l circuit for moving an indicating hand, abranch in the local circuit, one or more pro-jections forming one terminal of said branchcircuit, a brush carried by the indicating handforming the other terminal, and a suitable aununciator in the branch circuit, operatedupon the contact of the brush with… … m—^m <7Yu/~tMsLcn. <t*l Jit 3. ^w<wO C- ^<nrcU-^t it The norris peters co. photo-litho. Washington, o. c- United States Patent Office. ANGUS C. GORDON, OF ROCHESTER, NEW YORK.RAILWAY TIME-SIGNAL. SPECIFICATION forming part of Letters Patent No. 493,083, dated March 7, 1893. Application…
Clocks and watches
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![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten02unit-544-235.webp)
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