The American Cotton Spinner and Managers' and Carders' Guide (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1851 Excerpt: ...head. 432 3 at fourth and last head. 1296 There it is doubled 1296 times. DRAWING WITH DOUBLEBS In the drawing-frames with three heads, the cotton is only doubled 216 times, which is too little for twist or chain. Frames with three heads are much better if they have a doubler attached to them. Five cans may run up at this doubler; where the cards have a drawing-head to each card, and no railroads, four cans from the doubler run up to the first head instead of twelve. These four cans would be equal to twenty cards running into one can. These four cans at the second head, running into one, would be equal to eighty double; two cans running into one at the third head, would be equal to 160. If the doubling is continued through four heads on this plan, with only four cans at the back of each head, or one can to every roller-boss, all running into one can in front, the doubling would be 320; or, if the stuff would admit of two cans running up to each roller-boss at the fourth head, without increasing the draught more than 1 into 6J, the doubling may be carried to 640. If a doubler is used on the stuff, previous to putting it up to the first head, it is an excellent plan for preventing the stuff from running single, and is a saving of waste, by using four cans at the back of all the heads instead of twelve. By the last system of working there is always more or less single running, whereas, if there were only four ends running up, it would be impossible for the stuff to run through single without being noticed, and the head stopped. Where such a number of ends run up, this single running may occur without detection. Large cans should be used, especially in front of the doublers, and at the back of the first heads. By this means, two hands can attend to six heads wi...