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 19
t, one for operating the type-wheel, the other for operating the printing-hammer, in combination with a polarized relaywhich forms an automatic switch, wherebyeither one of the electro - magnets may bebrought into action, and the other cut out ofthe circuit by the reversal of the current,… … >. Photo-Lithographer. No. 96,567. T. A. EDISON.Electrical Printing Instrument. 2 Sheets-Sheet 2. Patented Nov. 9, 1869. II1 ,.-:IU-^—, i.
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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