American School of Correspondence · Chicago, American school of correspondence · leaf 178
x ^ OS cSXI ^ COTTON SPINNING. 117 … 2 DIACALENDER ROLL 17 M a ^ O 155 118 COTTON SPINNING. Rule 6. To find the speed of the doffer: Multiply the fac-tor by the number of teeth (30) m the doffer change gear. Example: .552 X 30 = 16.56 Rule 7. To find the number of teeth in the doffer changegear that will give the required revolutions…
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