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 1515

An illustration from Collection of United States patents granted to Thomas A. Edison, 1869-1884, 1869, leaf 1515
ranslating devices to a de-gree corresponding to the curve of accelera- 70tion and retardation of the speed of said mo-tor, the proportion of current sent to thetranslating devices being diminished when the jspeed increases, and vice versa, substantially ,as set forth. 75This specification signed… … United States Patent Office THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY.ELECTRICAL GENERATOR AND MOTOR. SPECIFICATION forming part of Letters Patent No. 276,233, dated April 24, 18£ Application filed November S3, 1882. (No model.) To all ivhom it may concern: Be it known that I, Thomas A. Edison,…

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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