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The switchboard saw the peak of its use in the 20th century before wider adoption of the electromechanical automatic telephone exchange. The automatic exchange, invented by Almon Strowger in 1888, has replaced most switchboards in central telephone exchanges around the world.
Ezra Torrance Gilliland (June 17, 1845 – May 13, 1903) was an inventor who designed the telephone switchboard and the magneto bell. [1] Gilliland had a laboratory in his home and "kept seven expert electricians employed" as he worked on his ideas. [1]
A telephone switchboard is a device that allows telephone lines to be interconnected, enabling the routing of calls between different phones or phone networks. [17] The switchboard operator was a person who manually connected calls by plugging and unplugging cords on the switchboard.
Almon Brown Strowger (/ ˈ s t r oʊ dʒ ər /; February 11, 1839 – May 26, 1902) was an American inventor who gave his name to the Strowger switch, an electromechanical telephone exchange technology that his invention and patent inspired.
A plaque in Budapest, which celebrates Tivadar Puskás and his brother Ferenc Puskás, and the invention of telephone switchboard. The Puskás family from Ditró [8] (today Harghita County of Romania), was part of the Transylvanian Hungarian nobility.
Ritterhoff claimed in 1913 that the real cause of Strowger's difficulties was a metal sign hung on his wall over his telephone, causing an intermittent short circuit when blown by the wind. [1] Strowger conceived his invention in 1888, and was awarded a patent for an automatic telephone exchange in 1891. The initial model was made from a round ...
Mechanic and inventor George Willard Coy attended a lecture by Alexander Graham Bell at New Haven's Skiff Opera House on April 27, 1877. [1] Coy, who had developed the world's first commercial telephone switchboard, was inspired by Bell's discussion of a telephone exchange for business and trade. [1]
Kellogg company logo as used from the 1920s to the 1950s. The Kellogg Switchboard and Supply Company was an American manufacturer of telecommunication equipment. Anticipating the expiration of the earliest, fundamental Bell System patents, Milo G. Kellogg, an electrical engineer, founded the company in 1897 in Chicago to produce telephone exchange equipment and telephone apparatus.