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Patent Drawing of Engine - Collection of United States patents granted to Thomas A. Edison, 1869-1884 (1869) (14756348232) Public domain image Pin Buttons with Crisp Design

Patent Drawing of Engine - Collection of United States patents granted to Thomas A. Edison, 1869-1884 (1869) (14756348232) Public domain image Pin Buttons with Crisp Design

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Lightweight and durable our custom pin buttons are made from metal and feature a strong safety pin. Popular as gifts, for events, and decorations our pins are printed with latest technology for bright and sharp designs. 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 Text Appearing Before Image: T. A. EDISON.Sex tup lex-Tele graph. No. 217,781. Patented July 22, 1879. Text Appearing After Image: United States Patent Office THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY, ASSIGNOR TOWESTERN UNION TELEGRAPH COMPANY, OF NEW YORK, N. Y. IMPROVEMENT IN SEXTUPLEX TELEGRAPHS. Specification forming part of Letters Patent No. 217,781, dated July 22, 1879; application filed May 14, 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 Electric Telegraphs, of whichthe following is a specification. This invention is an improvement upon thetelegraph known as the quadruplex, and Idesignate this invention as the sextuplex tel-egraph. I have discovered that the rise and fall oftension in the line and the reversals of polar-ity can be effected without deranging the ac-tion of one or more reeds or other instrumentvibrating according to a musical tone, and ref-erence is made to my application No. 132, inwhich such vibrating instrument is shown inconnection with a duplex telegraph. In
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