Newcomen, Thomas (nyōˈkəmən, nyōkŭmˈən) [key], 1663–1729, English inventor of an early atmospheric steam engine (c.1711). It was an improvement over an earlier engine patented (1698) by Thomas Savery, who shared the later patent with Newcomen. This improved engine was used successfully to pump water.
See study by L. Rolt (1965).
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