American School of Correspondence · Chicago, American school of correspondence · leaf 314
spindleis about four and one-quarter inchesfrom the face of the roller beam, andthe center of the front roll is aboutmidway of this space. Self-Weighted Top Rolls. Ringframes, for spinning long staple cot-ton, are frequently provided with self-weighted top rolls for the middle andback Hues. A frame… … Fig. 197 30° ROLL STAND Combination Roll Stand,30° Pitch. 279 238 COTTON SPINNING
Textile industry and fabrics
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