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 330
principle of virtual velocities, which tells us that theforces exerted are inversely as the velocities. That is, referring to Fig. 15, force at / velocity of e or force at e velocity of/ , velocity of e force at/=force at eX velocity of / An illustration is found in the force relation of the common… … Fig. 20. Fig. 21. Figs. 20 and 21.—Force relations in link work. represented by any convenient length of line as ac, is resolved bythe triangle aed into tangential and horizontal components, of whichthe former is ad. The corresponding velocity of pin e is ef. Theinstantaneous center of link be is…
Machine design
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