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. 48
- WGC 21
- Bulletin number 14000.
- 23
- 18
- Bulletin Number G1.
- 15
- ELMER WOODWARD'S NEW TYPE OF OIL PRESSURE WATER WHEEL GOVERNOR GATESHAFT TYPE, CIRCA 1917
- 10
- 16
- Woodward Oil- Pressure Water Wheel Governor VR series, circa 1914.
- WGC 22
- 17
- 14
- ELMER WOODWARD'S NEW TYPE OF OIL PRESSURE WATER WHEEL GOVERNOR '' GATESHAFT'' TYPE, CIRCA 1912.
- OLDEST PRINTED WOODWARD RELAY-VALVE OIL PRESSURE GOVERNOR MANUAL, CIRCA 1914