Benjamin, Charles H[enry], 1856- [from old catalog] · New York, H. Holt and company · leaf 144
xis of the cone,while the shaded area is asection of the cup, socalled. Let a and b betwo points of contact be-tween ball and cup. Drawthe line a b and produceto cut axis in A. Throughthe center of ball drawthe line A B; then willthis be the axis of rotation of the ball and a c,bdwill be the… … 120 MACHINE DESIGN. exact location of the third point of contact is notmaterial. If it were at c, too much pressure wouldcome on the cup at b ; if at d there would be an excessof pressure at a, hut the rolling would be correct ineither case. A convenient method is to locate p bydrawing A D tangent…
Machine design
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