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 379
, in combinationwith the wheels d e, as specified. 2. The combination of the electro-magnet mbeneath the clock-work, the adjusting arma-ture-lever, screws 13 14 outside the clock-work,and the shaft 16, for adjusting the spring 15above the lever and through the clock-platesc c, all arranged as and… … United States Patent Office. THOMAS A. EDISON, OF NEWARK, NEW JERSEY, ASSIGNOR TO HIMSELFAND GEORGE HARRINGTON, OF WASHINGTON, D. 0. IMPROVEMENT IN ELECTRIC TELEGRAPHS. Specification forming part of Letters Patent No. 147,311, dated February 10,1874 ; application filed July 29, 1873. „ Case 82. To…
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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![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer04inte-166-59.webp)
