Others before Corliss had at least part of this idea, including Zachariah Allen, who patented variable cut off, but lack of demand, increased cost and complexity and poorly developed machining technology delayed introduction until Corliss.
Zachariah Allen (September 15, 1795 – March 17, 1882) was an American textile manufacturer, scientist, lawyer, writer, inventor and civil leader from Providence, Rhode Island.
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In 1822, he organized and constructed a woolen mill in North Providence on the banks of the Woonasquatucket River and constructed a series of dams to provide power to the machinery.
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Zachariah Allen was born on September 15, 1795 in Providence, Rhode Island to Zachariah and Anne (Crawford) Allen.
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