Mechanical movements, powers, devices and appliances (1901)
Hiscox, Gardner Dexter, 1822?-1908 · New York, N. W. Henley & company · leaf 165
579. UPWARD-FLOW FILTER.—A perforated floor ismade of any desiredfiltering capacity andcharged with layers ofgravel, coarse and fine sand, with an inflow and overflow, as in thecut. A wash-out outlet should be made in the bottom of the lower compartment. 580. DOMESTIC FILTER.—To make a filter with…
Mechanical movements
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