Mechanical movements, powers, devices and appliances (1901)
Hiscox, Gardner Dexter, 1822?-1908 · New York, N. W. Henley & company · leaf 318
1255. CONTINUOUS DITCHINGDREDGE. — Discharging overheadon the banks by a carrier from underthe bucket discharge. … 1256. CLAM-SHELL BUCKET, fordredging. Operated by a double chain.One chain is attached to the joint of thelong arms, the other chain passes arounda sheave in the joint of the lazy tongsthat opens the bucket, and is made fast tothe first chain. The bucket is suspendedby the first-named chain to keep…
Mechanical movements
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