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His brother was Benjamin Alfred Raworth
When Mr. Raworth left Manchester, Mr. Dorman and Mr. Smith took over the small works which he had established and gradually developed the business which became Dorman and Smith Ltd.
1895 John Smith Raworth of Streatham patented a steam engine in many countries (Great Britain, No. 4,442, dated March 1, 1895, and No. 24,751, dated July 9, 1895). Patented in the USA in 1897. US Patent here.