U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 737
e hour as indicatedby the said clock, and a starting device ar- 45ranged to engage with the governing member to impart an impulse to the same on the clos-ing of the circuit by the master clock, sub-stantially as described. In testimony that I claim the foregoing as 50my invention I have signed my…
Clocks and watches
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-385-258.webp)
