File:Collection of United States patents granted to Thomas A. Edison, 1869-1884 (1869) (14756249332).jpg

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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

View Book Page: Book Viewer
About This Book: Catalog Entry
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Text Appearing Before Image:
ng a sheet, line after line, to the type-wheel. It will now be understood that the mag-netic motor maintains a rapid rotation of thetype-wheel until one of the keys is depressed,which arrests, by its projection i, the arm dand type-wheel, the latter having a correspond-ing letter opposite the impression-pad, and in-stantly the impression is given by the actionof the electro-magnet p. A stop-pawl, r, prevents any risk of reboundwhen the arm is arrested by the stop i. I claim as my invention— 1. The type-wheel and shaft, revolved byfriction from the armature of an electro-motorplaced upon the type-wheel shaft, substantial-ly as set forth. 2. The finger-keys Z and electro-magnet p1connected as set forth, in combination withsaid type-wheel and the impression-lever, sub-stantially as specified. Signed by me this 18th day of April, 1872. T. A. EDISON. Witnesses: Geo. T. Pinckney,Ohas. H. Smith. ( 3 Sheets — Sheet I, T. A. EDISON.Type Writing-Machine. No. 133,841. Patented Dec, 1 0,1872.
Text Appearing After Image:
3 Sheets — Sheet 2. T. A. EDISON.Type Writing-Machine> No. 133,841. Patented Dec, 10, 1872.

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v. 1
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27 July 2014
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