More Production From Cards

Abstract

an hour can be expected from a cotton card. This rate of production has been obtained. However, in the reports published of tests run in this country and in England with increased speeds apparently little attention has been paid to the importance of suitable preliminary preparation of the cotton fiber with the result that a maximum production of less than 14 pounds has been had.In processing cotton lint from the bale into yarn it is the thoroughness of the opening, cleaning and lapping operations that controls the production rate of subsequent operations. The carding machine is in principle a long draft reducing unit only. It is readily fouled and plugged by fibre fly, neps and foreign matter that enter with the lap. The function of the card being to orient . the fibre and produce a uniform web, the practice of expecting it to function as the final stage in cleaning operations has been the chief factor in limiting its output.The bat of cotton coming off of the screen of the ' finisher picker is the &dquo;ingot&dquo; from which the yarn is drawn. Open, clean cotton can be placed on the screen so as to form a sheet of uniform density. Such sheet can be extended by long drafts at high speed into the coarse and medium range of yarns to which cotton fibre has been relegated by the synthetic fibres. Cotton from the bale can and must be thoroughly opened and cleaned before being passed to the card. And the conventional

Cotton Carding: Production and Its Effects on Quality

“…(See Tables I-B, I-C, I-D, and Figure 2.) 3. In either of the above cases there is no significant ~ change in yarn strength.…”