Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 298
FiG. 620. nest part. From the thickest part of the ring A a strong arm proceeds to acentral boss which is keyed to the shaft. This ring, arm, and boss are all castin one piece. An outer ring or shell B is bored or turned to fit easily over the … ^^^^ Fig. 621. Fig. 622. ring A. On the back of the piece B is a boss which serves to carry a wheel orpulley. To use the arrangement as a shaft coupling, the boss on the back ofB is keyed to one shaft, the boss of A being keyed to the other. To take the place of fast and loose pulleys, as shown in…
Mechanical drawing
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