Factory and industrial management . ts havo covered theinfluence vi^hich such appliances exercise in lowering unit costs, the forms especially suitedto excavation and construction work, and cranes, cableways, and transporting conveyors.—The Editors. IN the many forms of good buckets in use—the clam-shell,orange-peel, bottom-dump and trip buckets, are a m .i^ludeof variations of design and size, the latter running from ^cubic-yard capacity up to 8 or lo yards, not to mention the big lo-ton automatic ore unloaders. A simple form of bucket used almostuniversally in caisson work is 29 inches in di
Factory and industrial management . ts havo covered theinfluence vi^hich such appliances exercise in lowering unit costs, the forms especially suitedto excavation and construction work, and cranes, cableways, and transporting conveyors.—The Editors. IN the many forms of good buckets in use—the clam-shell,orange-peel, bottom-dump and trip buckets, are a m .i^ludeof variations of design and size, the latter running from ^cubic-yard capacity up to 8 or lo yards, not to mention the big lo-ton automatic ore unloaders. A simple form of bucket used almostuniversally in caisson work is 29 inches in diameter and about 3 feethigh with a hinged bale or handle, and a ring on the bottom to whicha snatch line is connected as it leaves the lock; when the snatcH lineis held tight and hoisting line slackened the bucket, of course, turnsupside down and deposits its contents where desired. The tripbucket, made in capacities up to 2 cubic yards or more, is so con-structed that the bale or handle is clamped to the side in such a way i8s. HEAVY BUCKETS IN EXCAVATING WORK. Above, a Hayward 3 cu. yd. orange-peel used by Henry Steers, Inc., for filling for the Pennsylvania Railway, Greenville, N. J. It handles pieces up to 5 and t3 tons. Below, an English locomotive crane with Hayward 2 cu. yd. clam-shell bucket, used by S. Pearson & Sons in cleaning a mixture of clay and stone from the roof of the P. N. Y. & L. I. tunnel. The Hayward Co., N. Y. 186 HOISTING AND HANDLING MACHINERY. 187 that when the latch is knocked up with a shovel or hammer the weightof the material in the bucket upsets it just enough to allow the mate-rial to fall out; then the empty bucket swings back into a verticalposition and clamps itself. These are much used on ordinary derrickwork, the 2 cubic-yard size being very common.
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Keywords: ., bookcentury1800, bookdecade1890, booksubj, booksubjectengineering
