File:Collection of United States patents granted to Thomas A. Edison, 1869-1884 (1869) (14570066720).jpg

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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Text Appearing Before Image:
ved by the 30motor, but connected so as to turn with suchpart, and mechanism for controlling the longi-tudinal movement of such rod, substantiallyas set forth. 3. In an electric-arc light, the combination 35of the carbon-holding rod, two magnets, an ar-mature-lever playing between the magnets, andtwo pawls provided with lever-arms, pivotedupon the lever, one on either side of the car-bon-holding rod, and holding or releasing the 40carbon-holding rod as the armature is attractedby one or the other of the two magnets forgoverning the feed of the carbon, substantially as set forth. 4. In an electric-arc light, the combination, 45with the rod D, of the armature-lever G-, con-trolled by magnets H I,and carrying pawls 1%,having arms Im, and the strips n 0, substan-tially as set forth. This specification signed and witnessed this 5027th day of May, 188L. TIIOS. A. ED I SOX. Witnesses: Wm. H. Meadoworoft,H. W. Seely. (No Model.) T. A. EDISON: ELECTRIC LAMP. No. 251,539. Patented Dee. 27,1881.
Text Appearing After Image:
United States Patent Office. THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY, ASSIGNOR TO THEEDISON ELECTRIC LIGHT COMPANY, OF NEW YORK, N. Y. ELECTRIC LAMP. SPECIFICATION forming part of Letters Patent No. 251,539, dated December 27, 1881.Application filed May 27,1881. (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 iuvented a new and5 useful Improvement in Electric Limps; andI do hereby declare that the following is a fulland exact description of the same, referencebeing had to the accompanying drawings, anilto the letters of reference marked thereon. io It is desirable for some purposes or locationsto provide a shorter lamp and one of simplerand cheaper construction than the incandes-cing lamp before produced by me. This I ac-complish by sealiug the leading-iu wires which 15 support the carbon directly in the lower end ofthe bulb, thus making tlje glass portion of thelamp in one piece ins

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