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 214
e effective lever arm is OFi, while for position OC the extensionis EC and the lever arm OF. To make the compensation (which isexact at the extreme positions and approximate at intermediatepoints) it is only necessary to make OFXEC = OFiXEiCi To find the required extensions draw a diagram. Fig. 21,… … Figs. Fig. 21. 19 to 21.—Equalizing the Spring Pressure on Cams. This construction is most appropriate with cams laid out on thegravity curve system, in which the acceleration of the driven piecebeing uniform, a uniform force is suitable. With cams laid out onthe throw circle system the…
Machine design
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