Identifier: CollectionUniteVol2Edis (find matches)
Title: Collection of United States patents granted to Thomas A. Edison, 1869-1884
Year: 1869 (1860s)
Authors: 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
Subjects: Catalogs Patents Edison, Thomas A. (Thomas Alva), 1847-1931 Inventions Telegraph Electric machinery Electric apparatus and appliances Phonograph Telephone Motors Catalogs Patents Catalogs Patents Catalogs
Publisher: Washington, D.C. : U.S. Patent Office
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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s the speed of rev-olution will be the same in all the shafts if thenumber of teeth on the wheels is the same, orproportionate if the number of teeth is differ-ent, the vibrations of the pallets being in allinstances the same. I claim as my invention— 1. The combination, with a reed or tuning-fork, and an electro-magnet and circuit-break-er to maintain the vibration thereof, of pal-lets, a toothed wheel, and a shaft receiving itsrevolving motion from, or being controlled by,the vibrations of the 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 set forth. Signed by me this 30th day of October, A.D. 1876. THOS. A. EDISON. Witnesses: Geo. T. Pinckney,Harold Serrell. T A. EDISON.Phonograph or Speaking Machine. No. 200,521. Patented Feb. 19, 1878
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United States Patent Office. THOMAS A. EDISON, OF MEKLO PABK, 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 A. Edison, ofMenlo Park, in the county of Middlesex andState of New Jersey, have invented an Im-provement in Phonograph or Speaking Ma-chines, of which the following is a specifica-tion : The object of this invention is to record inpermanent characters the human voice andother sounds, from which characters suchsounds may be reproduced and rendered audi-ble again at a future time. The invention consists in arranging a plate,diaphragm, or other flexible body capable ofbeing vibrated by the human voice or othersounds, in conj unction with a material capableof registering the movements of such vibrat-ing body by embossing or indenting or alter-ing such material, in such a manner that suchregister-ma

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