Home / HISTORICAL WATER POWER ENGINEERING. 140
Creation date / 2017
- A vintage Water Wheel Manufacturing History Project.
- JAMES LEFFEL LETTERHEAD, CIRCA 1944.
- THE JAMES LEFFEL COMPANY, CIRCA 1944.
- Patent page 4.
- Patent page 3.
- Patent page 2.
- Patent page 5.
- Speer Products Company letter. Page 3.
- WOODWARD GATE SHAFT OIL PRESSURE GOVERNOR HISTORY.
- WOODWARD OIL PRESSURE WATER WHEEL GOVERNOR TABULATION CHART, CIRCA 1947.
- Mechanical size D governor serial number 6039, circa 1958. Page 1.
- Patent page 1.
- 13
- Speer Products Company letter to Woodward, circa 1958.
- 1979.