Hummel, J. J. (John James), d. 1902 · London : Cassell · leaf 119
lili Chap. Vn. I WOOLLEN YARN SCOURING. 105 or down by turning the vertical iron screws, and fixed atany point. After filling the arms c with yarn, as indicatedin the figure, the bar a is screwed up until the yarn is suit-ably stretched. In this condition the whole apparatus isimmersed in a bath of… … Fig. 34.—Continuous Woollen Yarn-scouriug Machiae. look curly. Hence after relaxing the tension of thehanks, their positions on the pegs are changed, they areagain screwed up, and the immersion in boiling water isrepeated. When taken out and allowed to cool, the yarnis taken off ready for scouring.…
Dyes and dyeing
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