Andrews, Ernest John, 1863-, Howland, Howard Newell, 1865- joint author · New York, London, The Macmillan company · leaf 132
e withthe lifting pump. The greatest possible distance betweenthe surface of the water and the highest point of the pis-ton at which a lifting pump will work is 34 ft., and 28 or30 ft. is as great a distance as is practicable. When it is desirable to raise water a greater distance thanthis, a… … closed, and the pressure being removed from v, water ispushed up through v^ as in the case of the lifting pump.On the down stroke v closes, keep-ing the water in B from flowingback into the well, and it is forcedinto A through the Yalve v fasterthan it can flow out of the spoutaS, so the air is…
Physics
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