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- A Woodward Prime Times History Project.
- Elmer Woodward's new hydraulic governor developed and patented in 1912. Patent number 1,106,434.
- Elmer Woodward's new hydraulic governor developed and patented in 1912.
- Closeup of the bottom part of a Woodward Hydralic gateshaft type water wheel governor. Shop Order H1016. circa 1916.
- Notes on the back of the picture from WGC shop order H1016 field service report.
- Elmer Woodward's patent for the first hydraulic Woodward Water Wheel governor.
- Elmer Woodward's patented hydraulic gate shaft type turbine water wheel governor from 1921.