Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 304
motion of theshaft is reversed. In the elevation, the lower sideof the open belt is straight, while there is a sagin the upper; the first is the tight or leadingbelt, through which the power is transmitted, Fig. 538. while the npper side is the loose or slack belt. When the belt is shifted, while… … FiG. 640. proaching the pulley, and not on the side on which it is running off. It is onlynecessary that a belt, to maintain its position, should have its advancing sidein the plane of rotation of that section of the pulley on which it is required toremain, without regard to the retiring side. On…
Mechanical drawing
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