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Chester H. Pond (March 26, 1844 – June 11, 1912) was an American inventor. He invented the first electrical self-winding clock, which could be electrically synchronized with a master clockand helped found the Self Winding Clock Company as a result. He invented many devices used in telegraphy. In later life he was a railroad developer. He also founded the town of Moorhead, Mississippi. == Early life and work == Chester Henry Pond was born at Medina, Ohio on March 26, 1844, to Henry Nelson and Mary Jerusha (Castle) Pond. He was a descendant of Samuel Pond who emigrated to America from England in the early seventeenth century, and settled in Connecticut. Pond's paternal family line is Samuel, Philip, Bartholomew, Beriah, Isaac Johnson and Henry Nelson Pond (father). His maternal grandfather was Deacon Samuel Castle, known in New York state as an expert in composing religious songs. He had an older brother, Chauncey Northrup Pond (1841–1920), and a younger sister, Celia E Pond (1846–47). Pond attended public schools in York, Brunswick and Oberlin in Ohio. After receiving his preliminary education he took employment at a business in Oberlin. There he developed an interest in telegraphy and took some courses in that field in Cleveland. He received a college loan for further education that he could repay after he was employed. During the American Civil War, Pond enlisted in the U. S. military telegraph service. He rose to the rank of colonel. Pond returned to Oberlin after the war, and was asked to organize a telegraph department at the Oberlin College. He founded the Oberlin Telegraph Institute with his older brother Chauncey N. Pond.〔 〕 In 1884, while at the Institute, Pond invented the first electrical self-winding clock. It could be electrically synchronized with a master clock. In 1886 New York City set up 50 of these movements of subsidiary clocks in a system that was synchronized every hour from a master clock. The electro-mechanical clock functioned with a small winding spring that was a little larger than the mainspring of a watch. This spring was kept at a uniform tension and responded to the hour-wheel. It took six seconds to rewind fully. It did this with no interruption to the time. The winding spring was kept at a tension that would only run the clock for one hour and then it would be rewound.〔 〕 Pond had an office in New York City to oversee his patent operations. He was a trustee for over a decade of the Oberlin Conservatory and Oberlin College and gave them a set of his synchronizing clocks. He was one of the founders of the Self Winding Clock Company of New York City. He also was a principal in the Gamewell Fire Alarm-Telegraph Company. Many of his inventions pertained to electrical clock improvements, electrical devices or telegraph equipment improvements; among them were "Circuit-controller for self-winding clocks", "Improvement in automatic fire-alarm boxes", "Improvement in fire-alarm-telegraph instruments", "Insulating-compounds for telegraphs", "Locks for circuit-closers", an "Electrical indicator", and a "Secondary electric clock movement". (See Google Patents ). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Chester H. Pond」の詳細全文を読む スポンサード リンク
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