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 237
Cast Steel Base with IntermediateMast Step Casting Cast Iron Ball Socket Foot Block orBase Cast Steel Mast Step and Base withCenter Bore and Bottom Sheave … Structural Steel Bull-Wheel Slewing Apparatus with Slew-ing Lines Rigged Electrically Operated Hoisting Winch with Self-SlewingGear for Use on Stationary Derrick DERRICKS 231 tional sheave is desired, as frequently is the case on bargederricks, the top may be equipped with two roosters. The boom…
Hoisting machinery · Conveying machinery
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