File:Collection of United States patents granted to Thomas A. Edison, 1869-1884 (1869) (14570102659).jpg

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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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sing through the main 45circuit are afforded, substantially as set forth. 2. The combination of a magnet, its arma-ture and armature-lever and contact-points,one of the latter being upon the armature-le-ver, all arranged in an electric circuit, and a 50fusible wire connected to form a shunt aroundthe contact-points, substantially as set forth. 3. The combination of a magtiet and its ar-mature, the latter aud its back-stop formingnormally part of the circuit to the magnet, a 55fusible circuit device maintainingc rcuit there-through after the armature has been with-drawn from its back-stop, and a latch lockingthereupon the armature against reclosure onits back stop, the fusible circuit device itself 60beiug thereafter ruptured by the flow of cur-rent therethrough, substantially as set forth. This specification signed and witnessed this10th day of March, 1880. TUGS. A. EDISOK Witnesses: Wm. Carman, C. S. Mott. - (No Model.; No. 251,546. T. A. EDISON. ELECTRIC LAMP. Patented Dec. 27,1881.
Text Appearing After Image:
N PETERS, Photo-Lithographer. Washington, D. C. United States Patent Office. THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY, ASSIGNOR TO THEEDISON ELECTRIC LIGHT COMPANY, OP NEW YORK, N. Y. ELECTRIC LAMP. SPECIFICATION forming part of Letters Patent No. 251,546, dated December 27, 1881. Application filed August 17, 1880. (No model.) 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 a new anduseful Improvement in Electric Lamps; and Ido hereby declare that the following is a fulland exact description of the same, referencebeing had to the accompanying drawing, andto the letters of reference marked thereon. As is well known, the lamp devised by meand used in my system consists of a strip orfilament of incandescing material of high re-sistance bent into a loop, now commonly knownas tlie horseshoe carbon,hermetically sealed15 within a glass inolosing-globe. It is well known that carbon expands by h

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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
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v.2
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27 July 2014
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Licensing

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May or may not be in the public domain
 In general, the contents of United States patents are in the public domain.

In specific cases, patent applicants and holders may claim copyright in portions of those documents. In those specific cases, applicants are required to identify the portions that are protected under copyright, and are additionally required to state the following within the body of the application and patent (see 37 CFR 1.71(d) & (e) and 37 CFR 1.84(s), and MPEP § 608.01(e) & (w) and MPEP § 1512):

A portion of the disclosure of this patent document contains material which is subject to (copyright or mask work) protection. The (copyright or mask work) owner has no objection to the facsimile reproduction by any­one of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but otherwise reserves all (copyright or mask work) rights whatsoever.

The original patent should be checked for the presence of such language before an assumption is made that the contents are in the public domain. (This template can be replaced by {{PD-US-patent-no notice}} in such cases.)

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