Inside Out Library

Collection of United States patents granted to Thomas A. Edison, 1869-1884 (1869)

Edison, Thomas A. (Thomas Alva), 1847-1931, Peters, N. (Norris), lithographer, Hammer, William Joseph, 1858-1934, former owner. DSI, Edison, Thomas A. (Thomas Alva), 1847-1931, inscriber. DSI, United States. Patent Office · Washington, D.C. : U.S. Patent Office · leaf 369

An illustration from Collection of United States patents granted to Thomas A. Edison, 1869-1884, 1869, leaf 369
agnetsmight be upon a spring-arm, so as to be broughtinto contact with the shaft by the attraction,if desired. I claim as my invention— The speed-regulator consisting of the elec-tro-magnet I, shaft a, and governor, in combi-nation with the circuit-closer and pulsator,substantially as and for the… … United States Patent Office. THOMAS A. EDISON, OF NEWABK, NEW JEESEY.IMPROVEMENT IN GALVANIC BATTERIES. Specification forming part of Letters Patent No. 142,999, dated September 23, 1873; application filed November 5, 1872. To all whom it may concern: Be it known that I, Thomas A. Edison, ofNewark,…

Trade catalogs · Patents · Edison, Thomas A. (Thomas Alva), 1847-1931 · Inventions · Telegraph · Electric machinery · Electric apparatus and appliances · Phonograph · Telephone · Motors

Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.

More pictures from Collection of United States patents granted to Thomas A. Edison, 1869-1884

More like this