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 139
forms incrustations on the bottom and other parts of boilers, as ordinarily con-tructed. will settle downin this part in a loose unaggregated state. At I, in the centre of this bottom, is placed a blow-off valve,denominated a mud-valve, and which may be opened when requisite, for the purpose of…
Mechanical engineering
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