Benjamin, Charles H[enry], 1856- [from old catalog] · New York, H. Holt and company · leaf 195
the gripping position. These clutches are convenient and durable but occupy con-siderable room in proportion to their transmitting power. TheWeston clutch is preferable for heavy loads. Cork inserts in metal surfaces have been used to some extent,as the coefficient of friction is much greater for… … Fig. 77. CLUTCHES 175 normal pressure is increased, the cork yields, finally becomingflush with the metal surface and dividing its load with the latter.Cork in its natural state is liable to wear quite rapidly underhard service. It may be hardened by being heated under heavypressure and in this…
Machine design
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