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 195
each side of thefulcrum, there is no reaction dueto the forces in rods FFi on jaw ^.All parts shown on Fig. 10, exceptsteam device and rock shaft forlever I, are in duplicate at the two ends of the drum. In order tosecure a parallel motion of the jaws to prevent the lower portiongripping first, the… … 30^ 60 90°Values of b 120 150° 180 Fig. 5.—The coefiicient of block brakes. formerly, partly because of the fact that it completely surrounds thedrum and interferes with the free dissipation of the heat and partlybecause it does not positively withdraw from the drum whenloosened, but consumes power…
Machine design
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