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Edison's "Phonomotor" or "Vocal Engine" The phonomotor or "vocal engine" was a device invented by Thomas Edison in 1878 to measure the mechanical force of sound. It converted sound energy or sound power into rotary motion which could drive a machine such as a small saw or drill. It derived from his work on the telephone and phonograph.
Patent drawing for Edison's phonograph, May 18, 1880. Thomas Edison conceived the principle of recording and reproducing sound between May and July 1877 as a byproduct of his efforts to "play back" recorded telegraph messages and to automate speech sounds for transmission by telephone. [29] His first experiments were with waxed paper. [30]
An Edison Home Phonograph for recording and playing brown wax cylinders, c. 1899. The phonograph, invented by Thomas Edison in 1877, [12] could both record sound and play it back. The earliest type of phonograph sold recorded on a thin sheet of tinfoil wrapped around a grooved metal cylinder.
Thomas A. Edison invented the phonograph, the first device for recording and playing back sound, in 1877.After patenting the invention and benefiting from the publicity and acclaim it received, Edison and his laboratory turned their attention to the commercial development of electric lighting, playing no further role in the development of the phonograph for nearly a decade.
Edison with the second model of his phonograph in Mathew Brady's studio in Washington, D.C. in April 1878 Edison began his career as an inventor in Newark, New Jersey , with the automatic repeater and his other improved telegraphic devices, but the invention that first gained him wider notice was the phonograph in 1877. [ 40 ]
Invention: Thomas Edison invents the first dictation machine, a slightly improved version of his phonograph. [2] 1936: Invention: A team of engineers at Bell Labs, led by Homer Dudley, begins work on the Voder, the first electronic speech synthesizer. [3] 1939: March 21: Invention: Dudley is granted a patent for the Voder, US patent 2151091 A ...
Stock certificate of the North American Phonograph Company, issued March 14, 1893 in Jersey City, N.J., originally signed by Thomas Alva Edison as president. The illustration on the left shows an Edison Class M Electric Phonograph; on the right is an 1888 American Graphophone Company Model B treadle Graphophone for wax cylinders.
The invention—an improvement on Edison's Aerophone of 1878—was named the Gouraudphone and demonstrated at the Exposition Universelle (1900) in Paris. In 1900 Horace introduced his brothers Eustace and Oswald to Gouraud who also financed them and gave them workshop space at Hove to develop their balloons intended for military observation. [ 8 ]