Benjamin, Charles Henry, 1856- [from old catalog], Hoffman, James David, 1868- [from old catalog] joint author · New York, H. Holt and company · leaf 193
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… … ^^^^^^^ a should slightly exceed 5 degrees to prevent sticking and/willbe at least 0.10 for dry iron on iron. Substituting/= 0.10 and sin a =0.125 we have 2^ = 0.8 Pr as aconvenient rule in designing. Fig. 77 illustrates the type of clutch more generally used onshafting for transmitting moderate…
Machine design
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