Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 296
g considerablefriction against the collar. To ob-viate this the shipper is made to acton a toggle-joint fastened to the shaft,and, once thrown, the pressure is self-continued and preserved without anyaction of the shipper, and without fric-tion. Fig. 616 represents a double-friction clutch, of the… … Fig. 616. 280 MACHINE DESIGN AND MECHANICAL CONSTRUCTIONS. When from any cause, as in rolling mills, the gearing is subject to suddenshocks, which might be injurious unless some means were adopted to modifythe blow, friction couplings may be introduced of which Fig. 617 is an illus-
Mechanical drawing
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