Benjamin, Charles H[enry], 1856- [from old catalog] · Cleveland, C. H. Holmes · leaf 101
94 MACHINE DESIGN Use the notation of Fig. 38 and the proportionsfor pattern molded teeth in Table XVI. The bending moment atsection AB is M=Py, andthe moment of resistance is M = -i-Sxw where S = safe transversestrength of material. Py =4-Sxw^6 … and Fig. 38. S = 6Py (a) when If P and w are constant, then S is a maximum y IS a maximum. But y = h sin a and x=- cosa y —= sin« cosa which is a maximum when «= 45* and — = J^ X ^ ^P Substituting this value in (a) we have S = -^ 7 pBut in this case w=.47p and therefore S = -^—i ^^ .22Ip* and…
Machine design
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