Inside Out Library

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 57

An illustration from Collection of United States patents granted to Thomas A. Edison, 1869-1884, 1869, leaf 57
ecified. 8. The arrangement of the tongue C in theslot b of the permanent magnet K S by meansof a pivot, a, and screw c, whereby the induct-ive magnetic influence of the permanent mag-net 1ST S upon the tongue 0 is greatly increased,substantially as herein set forth. FEANK L. POPE.THOMAS A. EDISON.… … n. peters, photo-Lithographer, Washington, d c United States Patent Office, FRANK L. POPE, OP ELIZABETH, AND THOMAS A. EDISON, OF MENLO PAEK,NEW JERSEY, ASSIGNORS, BY MESNE ASSIGNMENTS, TO THE GOLD ANDSTOCK TELEGRAPH COMPANY. IMPROVEMENT IN PRINTING-TELEGRAPHS. Specification forming part of Letters…

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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