Handbook for machine designers, shop men and draftsmen (1916)
Halsey, Frederick A. (Frederick Arthur), 1856-1935 · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 74
aller pulley, as shown in Fig. 4.With this construction the tensions are independent of the elasticityof the belt and the objection to short belt transmissions disappears.Similarly, the weight of the belt in vertical transmissions no longerreduces the tensions on the lower pulley, and such… … Fig. 3.Figs. 3 and 4.—Correct arrangement of idler pulleys. The layout of quarter twist belts is shown in Fig. 5, the rule beingthat the central plane of each puUey must pass through the pointof delivery of the other pulley. This construction should be usedwith narrow belts running on pulleys at a…
Machine design
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