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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 319

An illustration from Collection of United States patents granted to Thomas A. Edison, 1869-1884, 1869, leaf 319
r, sub-stantially as set forth. 4. The screws e6 applied to the armature ofthe printing-magnet, for the purposes set forth. 5. The stop-pawl e7, in combination with thetype-wheel, wedge-acting pallets, and ratchet-wheel, for the purposes set forth. 6. The double pairs of spring… … United States Patent Office. THOMAS A. EDISON, OF NEWARK, NEW JERSEY, ASSIGNOR TO THE GOLDAND STOCK TELEGRAPH COMPANY, OF NEW YORK, NT. Y. IMPROVEMENT IN CIRCUITS FOR PRINTING-TELEGRAPHS. Specification forming part of Letters Patent No. 140,4§9, dated July 1, 1873; application filed February 18,…

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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