The elements of natural philosophy : copiously illustrated by familiar experiments and containing descriptions of instruments, with directions for using : designed for the use of schools and academies (1856)
Sprague, A. W. (Alfred White), 1821-1891 · Boston : Phillips, Sampson & Company · leaf 128
Why is water poured into the pump upon first starting it ? In the commonWater-Pump why does the water rise in the barrel, and follow up the piston ?Explain the operation of the piston and valves in this. 11 122 FORCE PUMP. must be placed within thirty feet of the water in the well, orthis will not… … pump-cylinder, with a tube leading down into a reservoir ofwater. In this cylinder moves a solid plunger. As thisplunger is drawn up, a vacuum is formed, and the liquid passesup through a valve at the bottom of the cylinder, as in thelast experiment. Now depress the plunger; the valve closes,and…
Physics
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