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 671
. I claim as my invention — The combination,with a vibrating body simi-lartoa tuning-fork, of mechanism for maintain-ing the vibration, and magnets, cores, and heli-ces, whereby a secondary current is set up, soas to convert mechanical motion into electricforce, or the reverse, substantially as set… … N. PETERS. Pholo-Lithographs. Wsshmgion. 0. Q United States Patent Office. THOMAS A. EDISON, OF MENLO PAItK, NEW JERSEY.IMPROVEMENT IN APPARATUS FOR ELECTRIC LIGHTS. Specification forming part of Letters Patent No. 2 18,167, dated August 5,1871); application filed January 10, 1879. To all whom ib…
Trade catalogs · Patents · Edison, Thomas A. (Thomas Alva), 1847-1931 · Inventions · Telegraph · Electric machinery · Electric apparatus and appliances · Phonograph · Telephone · Motors
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