Warburg, James P. (James Paul), 1896-1969 · [Boston] The First national bank of Boston · leaf 32
other. Six card slivers are fedtogether between two pairs of rollers, the second of which is revolvingfaster than the first. The obvious result of this is the stretching ofthat portion of the slivers which is between the two sets of rollers. Theoperation is usually performed two or three times, in… … Four Stages oj RoLiiig. There remains now only one series of operations before the yarn is p • „ 1 7 rJ^, ,. , 1 1 • • 1 • Komng ready to be spun. Ihe sliver must be reduced m size and given a cer- Operations tain amount of twist; these objects are accomplished by the roving frames, of which there…
Cotton manufacture · Cotton trade
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