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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 1069

An illustration from Collection of United States patents granted to Thomas A. Edison, 1869-1884, 1869, leaf 1069
a dynamo or magneto electricmachine provided with an adjustable portionfor regulating the generation of current, of an 30electro-magnet placed in the main circuit fromsaid machine for adjusting said adjustable por-tion according to variations in the current re-quired, substantially asset forth.… … United States Patent OfficEc THOMAS A. EDISON, OF MENLO PAEK, NEW JEESEY, ASSIGNOB TO THEEDISON ELECTEIO LIGHT COMPANY, OF NEW YORK, N. Y. ELECTRIC LAMP. SPECIFICATION forming part of Letters Patent No. 263,135, dated August 22, 1882, Application filed August 17, 18S0, (No model.) Patented in…

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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