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 235
or more type-wheel magnets, and twoor more printing-magnets, and two or moreweighted printing-levers, substantially as setforth, whereby the printing will be effected bythe same pulsation used to bring the type-wheel to place, but only when the printing-magnet has accumulated sufficient force… … AM. PHOTO-LITHOGRAPHIC CO. N Y. (OSBORNES PROCESS ! 2 Sheets — Sheet 2. T. A. EDISON.Improvement in Printing Telegraph Instruments. No. 131,342. Patented Sep. 17, 1872.
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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