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THOMAS, SIDNEY GILCHRIST (1850-1885)

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Originally appearing in Volume V26, Page 867 of the 1911 Encyclopedia Britannica.
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THOMAS, See also:SIDNEY GILCHRIST (1850-1885) , See also:British inventor, was See also:born on the 16th of Apiil 185o at Canonbury, See also:London. His See also:father, a Welshman, was in the See also:civil service, and his See also:mother was the daughter of the Rev. See also:James Gilchrist. His father's See also:death leaving his See also:family with a considerably reduced income, he gave up his See also:original See also:idea of becoming a See also:doctor and obtained an See also:appointment as a See also:police See also:court clerk, which he held till May 1879. During these twelve years, besides the See also:work of a busy police court, which brought him into intimate contact with social problems, he found See also:time to study See also:chemistry, and attended lectures at the See also:Birkbeck See also:Institute. He set himself to solve the problem of eliminating See also:phosphorus from See also:iron by means of the See also:Bessemer converter, and by the end of 1875 was convinced that he had discovered a method. He communicated his theory to his See also:cousin, P. C. Gilchrist, who was chemist to iron See also:works in See also:Wales, and experiments were made, which proved satisfactory. See also:Edward See also:Martin, manager of the See also:Blaenavon Works, gave facilities for conducting the experiments on a larger See also:scale and undertook to help in taking out a patent. In See also:March 1878, the first public announcement of the See also:discovery was made at the See also:meeting of the Iron and See also:Steel Institute, but without attracting much See also:attention; and in See also:September a See also:paper was wiitten by Thomas and Gilchrist on the "Elimination of Phosphorus in the Bessemer Converter " for the autumn meeting of this institute, but was not read till May 1879. Thomas, however, made the acquaintance of E.

W. See also:

Richards, the manager of Boickow See also:Vaughan & Co.'s works at See also:Cleveland, See also:Yorkshire, whom he interested in the See also:process, and from this time the success of the invention was assured and domestic and See also:foreign See also:patents were taken out. The " basic process " invented by Thomas was especially valuable on the See also:continent of See also:Europe, where the proportion of phosphoric iron is much larger than in See also:England, and both in See also:Belgium and in See also:Germany the name of the inventor became more widely known than in his own See also:country. In See also:America, although non-phosphoric iron largely predominates, an immense See also:interest was taken in the invention. But Thomas had been overworking for years, and his lungs became affected. A See also:long See also:sea voyage and a See also:residence in See also:Egypt proved unavailing to restore his See also:health and he died in See also:Paris on the 1st of See also:February 1885. He had what W. E. See also:Gladstone, in a See also:review of the See also:Memoirs published in 1891, described as an " See also:enthusiasm of humanity," and he See also:left his See also:fortune to be used for the promotion of philanthropic work. A police court See also:mission was endowed in his memory. See Memoirs and Letters of Sidney'Gilchrist Thomas (1891), ed. by R. W.

Burnie.

End of Article: THOMAS, SIDNEY GILCHRIST (1850-1885)

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