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An early water wheel governor from 1909.

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IMPROVEMENT IN WATER GOVERNOR CONTRAPTION, CIRCA 1887. AD.

Elmer E. Woodward's state-of-the-art oil pressure relay valve water wheel governor patented in 1912.

Created on: Saturday 19 March 2011
Posted on: Friday 26 February 2016
Albums: HISTORICAL WATER POWER ENGINEERING. / A few Water Wheel Governor and Turbine Water Wheel Manufacturers from the U.S.A.
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