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Born Aug. 19, 1808, in Edinburgh; died May 7, 1890, in London. English machine builder.
Nasmyth received a classical school education; from 1829 to 1831 he studied under H. Maudslay. He established his own machine-building enterprise in Manchester (beginning in 1834). In 1839 he designed a steam hammer, for which he received a patent in 1842. He built shaping and milling machines for work on the side planes of nuts. In 1843 he traveled to St. Petersburg; he later supplied steam hammers and machine tools to Russia. He published a treatise in which he drew conclusions from his experience in designing metalworking machines (1841).