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 567

An illustration from Collection of United States patents granted to Thomas A. Edison, 1869-1884, 1869, leaf 567
e reed or tuning-fork, sub-stantially as set forth. 2. The combination of two or more reeds ortuning-forks, corresponding electro-magnets,and a circuit-breaker with two or more revolv-ing shafts, toothed wheels, and pallets movedby the vibration of the reeds, substantially asand for the purposes… … United States Patent Office, THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY.IMPROVEMENT IN PHONOGRAPH OR SPEAKING MACHINES. Specification forming part of Letters Patent No. 200,521, dated February 19, 1878 ; application filed December 24, 1877. To all whom it may concern-. Be it known that I, Thomas…

Trade catalogs · Patents · Edison, Thomas A. (Thomas Alva), 1847-1931 · Inventions · Telegraph · Electric machinery · Electric apparatus and appliances · Phonograph · Telephone · Motors

Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.

More pictures from Collection of United States patents granted to Thomas A. Edison, 1869-1884

More like this