American School of Correspondence · Chicago, American school of correspondence · leaf 315
ack. In addition to the usual front scavenger roll, a second roll is sometimes used which bears against the underside of the middle and back steel rolls. It is one inch in diameter, covered with denim, and supported by springs held in sockets. The ar-rangement is such as to allow the rolls to be… … 30ROLL 5TAND Fig. 199. Roll Stand, 30° Pitch, forOverhanging Front Rolls. 280 COTTON SPINNING 239
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