American School of Correspondence · Chicago, American school of correspondence · leaf 102
our laps going in, are 960 and 480 revolutions per minute 88 COTTON SPINNING. 58 respectively and are correct, at all other points the diameters of thecones are such as to give incorrect speeds as will be seen by com-paring the two diagrams. Friction Let-off. The friction let-off, by which the laps… … 4R0 REVS. 342.85_U- 5.25 DIA. --, E 3.7S DIA. 480___br4:^DrA~ -;/--- sbd. i hnAL^Pl^- 672 V-3.75DIA.J 4TH. 5.25 DIA. 960 _
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