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 397
and the ladders run down ofthemselves to any depth which is desired, being regulated by a brake attached to the drums at x x, asshown in figs. 1091 and 1093. The apparatus for propelling the vessel to and fro is fixed on the deck, y y are two curved cast-ironbarrels. By taking two or three turns of… … DREDGING, AND DREDGING-MACHINES. 389
Mechanical engineering
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