Photo of outer casing of scotch (reaction) turbine used on Morris Canal, from Plane 3E. According to the sign, this plane running under 47 feet head at 58 rpm venting 90.6 second feet, gives 30% efficiency. Best speed is 87rpm with best effecency of 60% (83 theoretical) . Water entered from below, the upward pressure balancing the weight of the wheel, shaft, and bevel gear, relieving fricting from bearings.
Historical American Buildings Survey
1970
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