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 397
ths of from 18 in. to 24 in. are usual, with averagecenter to center of rollers of 4 in. to S in. Eight sets of2j4 in. by 2]/^ in. by % in. upright angle posts form a goodsupporting system. These should be braced by the crosssaddles under the curves and by outside horizontal rings,or by the side… … Spiral Provides Temporary Storage on the conveyor, the roller spiral has little competition jneconomy of operation. Similarly, in handling carboys, casesof bottles, or other packages adapted to gravity rollers,the roller spiral forms a very flexible link in systems ofgravity conveyors. Wholesale…
Hoisting machinery · Conveying machinery
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