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- Elmer E. Woodward's new water wheel governor from three patents.
- Woodward Water Wheel Governor Schematic Drawing.
- Elmer E. Woodward's state-of-the-art mechanical compensating type water wheel governor.
- Schematic drawing for the Pratt & Whitney PW206 series gas turbine aircraft engine.
- Elmer E. Woodward's state-of-the-art mechanical compensating type water wheel governor.
- Data from Water Power Engineering, circa 1908.
- Another vintage Elmer Woodward ad from 1905.
- ENGINEERING MAGAZINE. MARCH 1905.
- Elmer E. Woodward's state-of-the-art oil pressure relay valve water wheel governor patented in 1912.
- Elmer E. Woodward's state-of-the-art oil pressure relay valve water wheel governors patented in 1912.
- THE ELEMENTS OF ELECTRICAL TRANSMISSION, CIRCA 1911.
- THE SPEED REGULATION OF WATER TURBINES.
- Data from Water Power Engineering, circa 1908.
- STURGESS WATER WHEEL GOVERNOR, CIRCA 1911.