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BIOGRAPHY
Thomas Edison was an inventor. He was born on February 11, 1847 in Milan, Ohio. His father was a jack-of-all-trades, his mother was a former teacher. Edison spent three months in school, then his mother taught him at home. At the age of 12 he sold fruit, candy, and papers on the Grand Trunk Railroad. In 1862, he became a telegraph operator. Exempt from military service because of deafness, he was a telegrapher until he joined Western Union Telegraph Company in Boston in 1868.
Probably Edison s first invention was an automatic telegraph repeater (circa 1864). His first patent was for an electric vote recorder. He wanted an "invention factory." As many as 80 "earnest men," including chemists, physicists, and mathematicians, were on his staff. "Invention to order" became very profitable.
From 1870 to 1875, Edison invented many telegraphic improvements: transmitters; receivers; the duplex, quadruplex, and sextuplex systems; and automatic printers and tape. He worked with Christopher Sholes, "father of the typewriter," in 1871 to improve the typing machine. Edison claimed he made 12 typewriters at Newark about 1870. The Remington Company bought his interests.
In 1876 Edison s carbon telegraph transmitter for Western Union marked a real advance toward making the Bell telephone practical. (Later, Emile Berliner s transmitter was granted patent priority by the courts). With the money Edison received from Western Union for his transmitter, he established a factory in Menlo Park, N.J. Again he pooled scientific talent, and within six years he had more than 300 patents. The electric pen (1877) produced stencils to make copies. (The A. B. Dick Company licensed Edison s patent and manufactured the mimeograph machine).
Edison s most original and lucrative invention, the phonograph, was patented in 1877. From a manually operated instrument making impressions on metal foil and replaying sounds, it became a motor-driven machine playing cylindrical wax records by 1887. By 1890 he had more than 80 patents on it. The Victor Company developed from his patents. (Alexander Graham Bell impressed sound tracks on cylindrical shellac records; Berliner invented disk records. Edison s later dictating machine, the Ediphone, used a wax cylinder).
To research incandescence, ...
Thomas Edison was an inventor. He was born on February 11, 1847 in Milan, Ohio. His father was a jack-of-all-trades, his mother was a former teacher. Edison spent three months in school, then his mother taught him at home. At the age of 12 he sold fruit, candy, and papers on the Grand Trunk Railroad. In 1862, he became a telegraph operator. Exempt from military service because of deafness, he was a telegrapher until he joined Western Union Telegraph Company in Boston in 1868.
Probably Edison s first invention was an automatic telegraph repeater (circa 1864). His first patent was for an electric vote recorder. He wanted an "invention factory." As many as 80 "earnest men," including chemists, physicists, and mathematicians, were on his staff. "Invention to order" became very profitable.
From 1870 to 1875, Edison invented many telegraphic improvements: transmitters; receivers; the duplex, quadruplex, and sextuplex systems; and automatic printers and tape. He worked with Christopher Sholes, "father of the typewriter," in 1871 to improve the typing machine. Edison claimed he made 12 typewriters at Newark about 1870. The Remington Company bought his interests.
In 1876 Edison s carbon telegraph transmitter for Western Union marked a real advance toward making the Bell telephone practical. (Later, Emile Berliner s transmitter was granted patent priority by the courts). With the money Edison received from Western Union for his transmitter, he established a factory in Menlo Park, N.J. Again he pooled scientific talent, and within six years he had more than 300 patents. The electric pen (1877) produced stencils to make copies. (The A. B. Dick Company licensed Edison s patent and manufactured the mimeograph machine).
Edison s most original and lucrative invention, the phonograph, was patented in 1877. From a manually operated instrument making impressions on metal foil and replaying sounds, it became a motor-driven machine playing cylindrical wax records by 1887. By 1890 he had more than 80 patents on it. The Victor Company developed from his patents. (Alexander Graham Bell impressed sound tracks on cylindrical shellac records; Berliner invented disk records. Edison s later dictating machine, the Ediphone, used a wax cylinder).
To research incandescence, ...
