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Patent drawing - Collection of United States patents granted to Thomas A. Edison, 1869-1884 (1869) (14776485753) 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
Text Appearing Before Image:
sset free acts in a contrary direction throughthe receiving-instrument d to that of thebattery m, and by means of a switch for put-ting in and out more or less cups the powerof the batteries m and u are neutralized onthe chemical paper at d ; consequently no ef-fect is produced at the receiver d when thebattery m is placed on the line. Of course, while the battery m is on, ifa current from the battery n is sent overthe line it records itself in the usual man-ner upon the chemical paper on d. I claim as my invention— 156,813 The local batteries u and norw and x ina shunt from the main line and opposingeach other, and a connection between themto the transmitting or receiving instrument,in combination with the main batteries, re-sistances, and circuits, arranged substantiallyas and for the purposes set forth. Signed by me this 7th day of March, A. D.1873. THOMAS A. EDISON. Witnesses: Geo. T. Pinckney,Chas. H. Smith. No. 15 8,78 7 T. A. EDISON.Telegraph Apparatus. Patented Jan. 19, 1875
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United States Patent Office. THOMAS A. EDISON, OF NEWAEK, YEW JEESET.IMPROVEMENT IN TELEGRAPH APPARATUS. Specification forming part of Letters Patent No. 158,YSY, dated January 19, 187i^ application died August 13, 1874. To all whom it may concern: Be it known that I, Thomas A. Edison, ofNewark, in the county of Essex and State ofNew Jersey, have invented an Improvementin Telegraphs, of which thefollowingis a specifi-cation : In electric telegraphs motion has been ob-tained at a distance by a galvanometer and byan electro - magnet. Both of these are com-paratively slow, and hence chemical decom-position has been resorted to for recordiug thecharacters sent from a distant station. Heretofore there has been great difficultyin obtaining any means for repeating mes-sages with high rates of speed, and magnetsor galvanometers in an electric circuit alwaysproduce more or less disturbance by the sec-ondary or induced current, and act to reducethe speed. My invention is dependent on mechanical
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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