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 277

An illustration from Collection of United States patents granted to Thomas A. Edison, 1869-1884, 1869, leaf 277
t Ji, in the circuitthat is opened and closed by the pulsator g,in combination with a stop that arrests themovement of the pulsator when the circuit isbroken, and a spring, or its equivalent, thatliberates the pulsator upon completing thebackward movement of the armature and pal-lets, substantially… … United States Patent Office THOMAS A. EDISON, OF NEWAEK, NEW JEBSEY, ASSIGNOE TO HIMSELFAND GEOEGE HAEEINGTON, OF WASHINGTON, D. 0. IMPROVEMENT IN AUTOMATIC TELEGRAPH INSTRUMENTS. Specification forming part of Letters Patent No. 134,867, dated January 14,1873. To all whom it may concern: Be 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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