U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 133
tionwith a contact-wheel mounted loosely on thepin end of said shaft and consisting of a gear- 60wheel, the insulating-disks I and K and themetal disk J. provided with the other termi-nal j2, and the spring L, arranged to bearupon the periphery of the disk J and con-nected at its other end with the… … United states Patent Office. BENJAMIN E. WATERS, OF BROCKTON, MASSACHUSETTS, ASSIGNOR TO THEWATERS ELECTRIC COMPANY, OF SAME PLACE. TIME-SWITCH FOR ELECTRIC CIRCUITS. SPECIFICATION forming part of Letters Patent No. 478,180, dated July 5, 1892.Application filed June 11,1891. Serial No. 395,899, (No…
Clocks and watches
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