Home / HISTORICAL WATER POWER ENGINEERING. / A few Water Wheel Governor and Turbine Water Wheel Manufacturers from the U.S.A. / Woodward Oil Pressure Relay Valve Water Wheel Governor history. / Woodward Governor Company history on Hydraulic type Water Wheel Governor Systems. / ELMER WOODWARD OIL PRESSURE SPEED REGULATOR PATENT NUMBER 1,106,434, CIRCA 1912. /
Woodward catalog of their new oil-pressure governor for turbine water wheels, circa 1914.
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- HISTORICAL WATER POWER ENGINEERING. / A few Water Wheel Governor and Turbine Water Wheel Manufacturers from the U.S.A. / Woodward Oil Pressure Relay Valve Water Wheel Governor history. / Woodward Governor Company history on Hydraulic type Water Wheel Governor Systems. / ELMER WOODWARD OIL PRESSURE SPEED REGULATOR PATENT NUMBER 1,106,434, CIRCA 1912.
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