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The first microphone that enabled proper voice telephony was the (loose-contact) carbon microphone (then called transmitter). This was independently developed around 1878 by David Edward Hughes in England and Emile Berliner and Thomas Edison in the US.
This is an accepted version of this page This is the latest accepted revision, reviewed on 21 December 2024. Technical and legal issues surrounding the development of the modern telephone For broader coverage of this topic, see History of the telephone. Replica of Antonio Meucci's telettrofono Reis's telephone The invention of the telephone was the culmination of work done by more than one ...
Edison in 1861. Thomas Edison was born in 1847 in Milan, Ohio, but grew up in Port Huron, Michigan, after the family moved there in 1854. [8] He was the seventh and last child of Samuel Ogden Edison Jr. (1804–1896, born in Marshalltown, Nova Scotia) and Nancy Matthews Elliott (1810–1871, born in Chenango County, New York).
1 July 1875: Bell uses a bi-directional "gallows" telephone that is able to transmit "voicelike sounds", but not clear speech. Both the transmitter and the receiver are identical membrane electromagnet instruments. 1875: Thomas Edison experiments with acoustic telegraphy and in November builds an electro-dynamic receiver, but does not exploit it.
US 203,016—Speaking Telephone (carbon button transmitter)—Thomas Edison US 222,390 — Carbon Telephone (carbon granules transmitter)—Thomas Edison US 485,311 — Telephone (solid back carbon transmitter)—Anthony C. White (Bell engineer) This design was used until 1925 and installed phones were used until the 1940s.
Early months of 1879: The Bell Telephone Company is near bankruptcy and desperate to get a transmitter to equal Edison's carbon transmitter. 17 February 1879: Bell Telephone merges with the New England Telephone Company to form the National Bell Telephone Company. Theodore Vail takes over operations. 1879: Francis Blake invents a carbon ...
Hughes published his work during the time that Thomas Edison was working on a carbon telephone transmitter and Emile Berliner was working on a loose-contact transmitter. [9] Both Hughes and Edison may have based their work on Philipp Reis' telephone work. [9]
Below is a list of Edison patents. Thomas Edison was an inventor who accumulated 2,332 [1] ... U.S. patent 0,378,044 – Telephone-Transmitter;