American School of Correspondence · Chicago, American school of correspondence · leaf 213
ingroll, E. 187 148 COTTOK SPINNING. As the cam revolves, the shape of the groove in it is such asto cause the pawl to move back and forth. The sides of thenotches are square which permits the pawl to engage with them ineither direction. This motion is communicated to the roll, E, bythe notched… … Fig. 127. Fig. 128. Diagrams of Detaching Eoll Cams. the periphery of which runs a roll, X, which is fastened to the lowerend of the arm, Y. The other end of the arm is fastened to tliesame stud as the pawl, O^. This cam simply acts on the pawl,moving it in and out of contact with the notched wheel…
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