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Patent drawing - Collection of United States patents granted to Thomas A. Edison, 1869-1884 (1869) (14753481931) Public domain image

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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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gust 28, 1877; neither do Iherein claim a device for effecting a rise andfall of electric tension by a motion derivedfrom the diaphragm, that having been setforth in my prior application No. 130, filedApril 27,1877; and in my application No. 144,filed September 5, 1877, the electrodes aremoved to vary the resistance to the electriccurrent passing through a liquid. In the pres-ent instance the electrodes are stationary.I claim as my invention—In an acoustic-telegraph apparatus, the com-bination of two stationary electrodes immersedin two cells, a conducting-fluid in said cells,and a fluid-connection between such cells, andmechanism actuated by a sound-vibrated bodyfor varying the dimensions of such liquid-con-nection and the conductivity of the same, sub-stantially as set forth. Signed by me this 8th dav of December.A. D. 1877. THOS. A. EDISON. Witnesses: Geo. T. Pinckney,Chas. H. Smith. T. A. EDISON.Circuits for Acoustic or Telephonic-Telegraph. No. 203;019. Patented April 30, 1878.

Text Appearing After Image:

United States Patent Office. THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY, ASSIGNOR TO WESTERNUNION TELEGRAPH COMPANY, OF NEW YORK, N Y. IMPROVEMENT IN CIRCUITS FOR ACOUSTIC OR TELEPHONIC TELEGRAPHS. Specification forming part of Letters Patent No. 203,019, dated April 30, 1878; application filed February 21, 1878. 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 Circuits for Acoustic Telegraphs,(Case No. 150,) of which the following is aspecification: In telegraph-lines there are very often nu-merous wires running in the same directionupon the poles, and it has long been knownthat currents passing through one or more ofsaid wires set up iuduced currents in the otherwires. These ordinarily are harmless in theMorse and other systems of telegraphy; butwhere a wire for a telephone, acoustic, or speak-ing telegraph runs parallel to or within thefield of the electric influence

Thomas Edison, 1847-1931, is credited with the development of many important inventions and technologies. Some of his most notable patents and inventions include: - The light bulb: Edison's most famous invention, the light bulb, revolutionized the way we light our homes and businesses. He worked for many years to perfect the design of the light bulb, and his efforts ultimately led to the development of a practical, long-lasting, and commercially viable electric light. - The phonograph: Edison's phonograph was the first device to successfully record and reproduce sound. The phonograph used a cylinder coated with a substance that could be etched by sound waves to record audio, and a needle to play it back. This invention paved the way for the development of the modern record player and other audio recording and playback technologies. - The motion picture camera: Edison's motion picture camera, also known as the kinetograph, was the first device to successfully capture moving images on film. The kinetograph used a series of rapidly rotating lenses to record a series of still images, which could then be played back in rapid succession to create the illusion of motion. This invention laid the foundation for the modern film industry. - The electric pen: Edison's electric pen was an early precursor to the modern-day tattoo machine. The device used a needle that was rapidly vibrated by an electric motor to create a series of punctures in a sheet of paper. This allowed users to easily create multiple copies of a document using a technique known as stenciling. - The electric vote recorder: Edison's electric vote recorder was an early voting machine that was designed to automate the process of tallying and recording votes in elections. The device used a series of levers that could be activated by voters to indicate their choices, and a mechanism to tally the results and display them on a dial. This invention was intended to improve the accuracy and efficiency of the electoral process.

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collection of united states patents granted to thomas a edison 1869 1884 book illustrations history of technology electric power new jersey patents patent drawings thomas edison high resolution inventions images from internet archive