Home / HISTORICAL WATER POWER ENGINEERING. 594
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- Another vintage Elmer Woodward ad from 1905.
- Data from Water Power Engineering, circa 1908.
- Elmer E. Woodward's state-of-the-art oil pressure relay valve water wheel governor patented in 1912.
- The Woodward Governor Factory on Mill Street in the Water Power District in Rockford, Illinois(1910-1941).
- Elmer E. Woodward's state-of-the-art oil pressure relay valve water wheel governors patented in 1912.
- ELMER WOODWARD'S NEW TYPE OF OIL PRESSURE WATER WHEEL GOVERNOR '' GATESHAFT'' TYPE, CIRCA 1912.
- ELMER WOODWARD'S NEW TYPE OF OIL PRESSURE WATER WHEEL GOVERNOR GATESHAFT TYPE, CIRCA 1917
- Bulletin Number G1.
- 1917 advertisements.