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 389
llers, however, have the advantage of greater strengthand wearing qualities where the conveyor is constantlyexposed to the weather. The rollers should be from 12 in.to 18 in. in length, depending on the average width of theboards to be carried. A roller spacing of approximately12 in. is best,… … From Car to Lumber Pile bearings should be used, especially at the loading section.With the heavier timbers roller bearings are often moresatisfactory than ball bearings, because of their greaterstrength. The supports should be light, strong and easilyadjusted for the portable gravity conveyor.…
Hoisting machinery · Conveying machinery
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