Material handling cyclopedia; a reference book covering definitions, descriptions, illustrations and methods of use of material handling machines employed in industry (1921)
Wright, Roydon Vincent, 1876- ed, Little, John G., joint ed, Augur, Robert C., joint ed · New York, N.Y., Simmons-Boardman Publishing Co · leaf 297
designed for hght service on cranes orother machines—upward to about 6 to 10 tons capacity—are generally operated by hand power and are constructedin a manner similar to that of the plain two-wheel or four-wheel trolleys. A power sheave is used to operate thegear and it may be attached directly to…
Hoisting machinery · Conveying machinery
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