U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 785
cuitwith said battery, an electro-magnet, also in 55said circuit, an armature for said magnet, acompressing device, suitably connected withsaid armature, and a tube connecting saidcompressing device with the pressure cham-ber, substantially as described. 60 In testimony whereof I have signed myname… … Witnesses, cM*mk») S&fff) ■ nventor. Af Attorn. Attorney United States Patent Office, ALEXANDER GLEASON, OF BUFFALO, NEW YORK, ASSIGNOR TO THE BUFFALO ELECTROTYPE AND ENGRAVING COMPANY, OF SAME PLACE. TIME-CHART. SPECIFICATION forming part of Letters Patent No. 497,917, dated May 23, 1893.…
Clocks and watches
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