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 1343

An illustration from Collection of United States patents granted to Thomas A. Edison, 1869-1884, 1869, leaf 1343
hines having their armatures in separate multiple-arc cir-cuits, of a multiple-arc circuit having an ad-justable resistance and branches from the re- issistance through the field-magnets of the ma-chine, such resistance being common to all ofsaid branches, substantially as set forth. This… … N. PETCRS. Pbold-ythograptat. Wa.hington. D. C. United States Patent Office. THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY.DYNAMO-ELECTRIC MACHINE. SPECIFICATION forming part of Letters Patent No. 265,7c5, dated October 10, 1862. Application filed August 14, 188-2. (No model.) I To all wJwm it may…

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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