. Cotton and cotton manufacture . oom. As the tufts come out of the chute they fall into the first of threemachines known as Pickers, whose function is to beat out the coarserimpurities and deliver the cotton in rolls of batting called laps. InPickers ^^^ ^^*^ ^^ breaker-picker the tufts are thoroughly whirled and Remove pounded over grid-bars by rollers armed with short flail-like projec-Coarse Dirt tions, and then compressed into a continuous sheet or lap of a givenweight per yard, which is wound on a large spool and deliveredto the second, or intermediate picker. This machine practically re
. Cotton and cotton manufacture . oom. As the tufts come out of the chute they fall into the first of threemachines known as Pickers, whose function is to beat out the coarserimpurities and deliver the cotton in rolls of batting called laps. InPickers ^^^ ^^*^ ^^ breaker-picker the tufts are thoroughly whirled and Remove pounded over grid-bars by rollers armed with short flail-like projec-Coarse Dirt tions, and then compressed into a continuous sheet or lap of a givenweight per yard, which is wound on a large spool and deliveredto the second, or intermediate picker. This machine practically repeatsthe operation only that it combines four laps from the first picker intoone which it hands over to the last, or finisher picker. The latter againtakes four intermediate laps and forms them into one sheet of fairlyclean cotton, containing very little dirt or seed, but still fairly filledwith small particles of leaf. In these preliminary operations the cot-ton has lost about five per cent, of its weight. [201 FLATS WASTE BRUSH. PRINCIPLE OF THE FLAT CARD of theCard ItsOperation Before anything else can be done it is now necessary to remove the Theleaf particles, and to separate the individual fibres from their matted Functionposition. Both these functions are performed by the machine knownas the Card, the principle of which is that of two surfaces armed withfine wire teeth revolving not quite tangent to each other. Originallycarding was performed by hand with two instruments similar to butter-pats, but the Wellman carding machine was one of the earliest textileinventions. This was considerably improved by the revolving flat cardin 1857. The lap from the finisher picker is fed over a plate on to a revolvingcylinder bearing wire teeth, which combs it over a set of knives, therebyremoving coarse dirt, and passes it on to a large cylinder armed withmillions of fine wire teeth. The latter carries the cotton past a slowlyrevolving endless chain of flats which remove the neps and f
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectcottonm, bookyear1921
