Benjamin, Charles Henry, 1856- [from old catalog], Hoffman, James David, 1868- [from old catalog] joint author · New York, H. Holt and company · leaf 192
with it. When the parts A and B are forced together the rings close upand engage by pairs, producing a considerable turning momentwith a moderate end pressure. Let: P = pressure along axis71 = number of pairs of surfaces in contact/= coefficient of frictionr = mean radius of ring7 = turning moment… … Fig. 76. 174 MACHINE DESIGN and one internal, engaging one another and driving by friction.Using the same notation as before, and letting a = angle betweenelement of cone and axis, the normal pressure between the two p p/ surfaces will be: Therefore: 8in a and the friction will be: sin a T Pfr sin…
Machine design
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