Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 143
468. UNDERSHOT WATER WHEEL—Power equals about forty per cent, of the valueof the water-fall flowing under the gate. … 469. SAW-MILL WATER WHEEL andflume, h -\- h represents the head of water.The total head in feet multiplied by the weightof water discharged per minute equals the foot-pounds of power. Efficiency about sixty percent.
Mechanical movements
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