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Alexander Graham Bell (/ ˈ ɡ r eɪ. ə m /, born Alexander Bell; March 3, 1847 – August 2, 1922) [4] was a Scottish-born [N 1] Canadian-American inventor, scientist, and engineer who is credited with patenting the first practical telephone. He also co-founded the American Telephone and Telegraph Company (AT&T) in 1885. [7]
In the process, Bell spills acid on his leg and shouts, "Mr. Watson, come here, I want you!" The receiver picks up the sound, and Watson finally hears Bell through the telephone for the first time. [2] Bell sets up a public demonstration of the telephone. The invention is received with laughter and ridicule, but that does not stop Bell.
A Bell System logo (called the Blue Bell) used from 1889 to 1900 [citation needed] AT&T's lines and metallic circuit connections. March 1, 1891. The formation of the Bell Telephone Company superseded an agreement between Alexander Graham Bell and his financiers, principal among them Gardiner Greene Hubbard and Thomas Sanders.
Watson in his later years, holding Bell's original telephone. Born in Salem, Massachusetts, [1] United States Watson was a bookkeeper and a carpenter before he found a job more to his liking in the Charles Williams machine shop in Boston in 1872. [2] He was then hired by Alexander Graham Bell, who was then a professor at Boston University.
Russian engineer Pavel Yablochkov invented the electric carbon arc lamp: 1876: Scottish inventor Alexander Graham Bell patented the telephone 1877: American inventor Thomas Edison invented the phonograph: 1877: German industrialist Werner von Siemens developed a primitive loudspeaker: 1878: First electric street lighting in Paris, France 1878
The modern electric bell mechanism had its origin in vibrating "contact breaker" or interrupter mechanisms devised to break the primary current in induction coils. [5] Vibrating "hammer" interrupters were invented by Johann Philipp Wagner (1839) and Christian Ernst Neeff (1847), and was developed into a buzzer by Froment (1847).
The housing of the bell box may be manufactured from wood, metal, or plastic. The basic core component of a conventional bell box is an electromagnet and a bell or other metal piece, some of which create a repetitive sound. [1] The bell sound is normally created inside the box, although the unit may have bells mounted on the outside of the box.
Elisha Gray (August 2, 1835 – January 21, 1901) was an American electrical engineer who co-founded the Western Electric Manufacturing Company.Gray is best known for his development of a telephone prototype in 1876 in Highland Park, Illinois.