Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 666
l now flow copiously for some weeks, and when the quantity passing begins to decrease, thestop-cocks are shut, and the valve S S raised. The water then enters below, filling all the drains, andhaving a head pressure of several feet it will force its way up through the sand to the top, and in… … after the water has been raised above it, and a little additional water admitted on the top, through theconduit, it will facilitate the operation of cleaning, as the mud is always deposited on the very surfaceof the sand. By this means the sediment will be carried off, and the water pass through…
Mechanical engineering
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