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 675

An illustration from Collection of United States patents granted to Thomas A. Edison, 1869-1884, 1869, leaf 675
line 4. I claim as my invention— The combination, with a vibrating bodysimilar to a tuning-fork, of mechanism formaintaining the vibration, and magnets, cores,and helices, whereby a secondary current isset up, so as to convert mechanical motion intoelectric force, or the reverse, substantially… … N.PETERS, PHOTO-UTHOGRA P H ER, WASHINGTON, D C. United States Patent Office. THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY.IMPROVEMENT IN APPARATUS FOR ELECTRIC LIGHTS. Specification forming paxt of Letters Patent No. 218,161, dated August 5, 1879; application filed January 10,1879. To all inhom it…

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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