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 1327

An illustration from Collection of United States patents granted to Thomas A. Edison, 1869-1884, 1869, leaf 1327
ved from the same main con-ductors,) a resistance in the field-circuit, mer-cury-cups connected with such resistance at in-tervals, and a thermostatic device in the maincircuit carrying points which dip into said mercury-cups in succession, substantially asset forth. This specification signed and… … f United States Patent Office* THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY.REGULATOR FOR DYNAMO-ELECTRIC MACHINES. SPECIFICATION forming part of Letters Patent No. 265,781, dated October 10, 188?. Application filed August 7,18f2. (No model.) To all whom it may concern: Beit known that J, Thomas A.…

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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