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 401
r,9 Scale.—8 feet=l inch. … Scale.—4 fect=3 inches. DREDGING, AND DREDGING-MACHINES. 393 buckets only having been employed in the performance, with a weight of three pounds and a half persquare inch upon the safety-valve of the boiler. It may be remarked, in conclusion, that the boat is supplied with a bilge-pump for…
Mechanical engineering
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