File:Collection of United States patents granted to Thomas A. Edison, 1869-1884 (1869) (14756541205).jpg

Identifier: CollectionUnitev1Edis (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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Text Appearing Before Image:
he type-wheel will move sixletters or spaces, and complete a revolution ineither four or five pulsations of the magnet u,according to the number of characters uponsuch type-wheels. In this manner great rapid-ity can be obtained, because the long intervalsand numerous pulsations required between im-pressing one letter and the next are lessened.The magnet u may be energized by a reversalof the current operating in the magnet e, orby a separate line-wire. The transmittingdial or instrument may be of any desired char-acter adapted to these two magnets, and thecurrents to them. I claim as my invention— A type-wheel in combination with two ac-tuating magnets and connections, substantial-ly as set forth, one for operating a step-by-step motion one letter or division at a time,and the other for moving the type-wheel twoor more letters or divisions at a time, substan-tially as specified. Signed by me this 26th day of April, A. D.1872. T. A. EDISON. Witnesses: Geo. T. Pinckney,Ohas. H. Smith.
Text Appearing After Image:
N. PETERS.-Photo-Lithographer, Washington, D. C. 138,607 United States Patent Office. THOMAS A. EDISON, OF NEWAB&, NEW JERSEY.IMPROVEMENT IN PRINTING-TELEGRAPHS. Specification forming part of Letters To all wTiom it may concern: Be it known that I, Thomas A. Edison, ofNewark, in the county of Essex and State ofNew Jersey, have invented an Improvementin Printing-Telegraphs5 and the following isdeclared to be a correct description • of thesame. In this instrument the magnet that givesthe impression is in the main-line circuit aswell as the type-wheel magnet, but the formeris cut out by a shunt or short circuit thatis closed when the instrument is not working,and during the pulsations that set the type-wheel ; but when a pause occurs with the cir-cuit closed this short circuit is broken by agradually-operating spring or weight controlledby an air-cushion, so that the electricity isforced to pass through the printing-magnetand gives the impression, simply in conse-quence of keeping

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