Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 143
rio. 127. U4 Pumps and Hydraulics. The weight of the dynamo, shaft, and turbine is balanced,when the wheels are in motion, by the upward pressure of thewater in the wheel case on a piston placed above the upper … cssm UJ j. j»j<-...i(,...^^| wheel. The upper disc containing the guides is, for this pur-pose, perforated, so that the water pressure can be equalized. WATER PRESSURE ENGINES. Water pressure engines are viachines ziiih a cylinder amipiston or rani, i)i principle identical Hitli the…
Hydraulic machinery · Pumping machinery
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