Benjamin, Charles H[enry], 1856- [from old catalog] · Cleveland, C. H. Holmes · leaf 119
asure. T Fig. 40. The tension T at any part of the arc of contact isintermediate between T^ and Tg. Let AB Fig. 40, be an indefinitely short elementof the arc of contact, so that the tensions at A and Bdiffer only by the amount dT. dT will then equal the friction on AB which wemay call dR. Draw the… … B MACHINE DESIGN. The friction on AB is fP=:fTd^ or dT=dR=fTd<? dTand fd^ ~T^ Integrating for the whole arc 0 : /.T^dT T, T, idT=e T,=^,=T,e-R=T,-T,=T,(i-e-f^) 3 ie (93) The average value of f for leather belts on ironpulleys as determined by experiment is f=0.27 If we denote the expression…
Machine design
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