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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 213

An illustration from Collection of United States patents granted to Thomas A. Edison, 1869-1884, 1869, leaf 213
representing dashes and the short onesdots, as indicated by the corresponding line oftelegraphic characters. I claim as my invention— A chain or cord under control of an electro-magnet, and pressed into contact with the sur-face of the paper to produce a telegraphiccharacter by embossing,… … ATTY. AM. PHOTO-LITHOGRAPHIC CO. V.Y. foSBORHES p.iocessj United States Patent Office. THOMAS A. EDISON, OF NEWARK, NEW JERSEY.IMPROVEMENT IN ELECTRO-MAGNETS. Specification forming part of Letters Patent No. 130,795, dated August 27, 1872. To all wlwm it may concern: Be it known that I, 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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