Thorne, William H[enry], 1847- [from old catalog] · Philadelphia, Williams, Brown & Earle · leaf 80
is one-fourth the length of that of B andit would make four turns to one of B. This is called the angular velocityratio, and if there is no slip or irregularities of any kind between the circumferencesthe ratio is said to be constant. The want of sufficient friction between thesurfaces, compels the… … Now reduce the diameters of these cylin-ders proportionately—that is, so that oneshall still be four times that of the other, asshown by b 6, b b. Wrap an inelastic cordaround b b iu the direction shown by thearrow, and then pass it down between thetwo and around b b in the opposite direc-tion.…
Mechanical drawing
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