Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary (1917)
Hiscox, Gardner Dexter, 1822?-1908 · New York : The Norman W. Henley publishing co. · leaf 164
HYDRAULIC POWER AND DEVICES. 157 … 583. STONEWARE FILTER for household use.The lower jar for storage of filtered water. Theupper jar has a hole filled with sponge that filtersthe dirt out; beneath, a bed of charcoal on a porousstone or earthen plate.
Mechanical movements
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