Cotton weaving: its development, principles, and practice . ical shaft carryingarms or dashers by the revolution of which the size wasagitated or mixed. This was driven by a horizontal shaftand bevel gearing fitted upon the top and connected by astrap with a shaft in the room. It was a great improve-ment upon the manual method. But something else was required. The use of raw size,as the unboiled article is called, in the sizeing machinewas of a great deal of trouble, as it could neitherbe sufficiently boiled nor could any uniformity be preservedin the sizeing of the warps passed thro
Cotton weaving: its development, principles, and practice . ical shaft carryingarms or dashers by the revolution of which the size wasagitated or mixed. This was driven by a horizontal shaftand bevel gearing fitted upon the top and connected by astrap with a shaft in the room. It was a great improve-ment upon the manual method. But something else was required. The use of raw size,as the unboiled article is called, in the sizeing machinewas of a great deal of trouble, as it could neitherbe sufficiently boiled nor could any uniformity be preservedin the sizeing of the warps passed through it. To over-come this, a preliminary partial, or perfect boiling of thesize was adopted, which was done by the injection ofsteam by means of a pipe into the mixer just constituted another advance, and met with greatfavour from manufacturers. The sizeing tubs were, how-ever, found to be inconveniently small, and a preferencebegan to be expressed for a very perfect boil of the sizebefore its introduction into the sizeing machine. In order. SIZEING MATERIALS AND MANUFACTURE OF SIZE. 457 to meet this requirement, the tub form was replaced by-large square or oblong becks of great capacity fitted withseveral agitators. This gave an opportunity for obtainingmore uniform results, as large mixings could be made atonce, whilst it secured far more perfect fermentationwhere such was desired. But still the results were noteverything that was desired. The boiling of large massesof size by the injection of steam meant a continuous intro-duction of additional water, derived from its to keep this water out was the next problem tosolve. Again Mr. Eastwood met the requirement of thecase by devising a plan of forcing the size through a coiledcopper tube, the coil being contained in a cast-iron tubeforming a steam chamber which is kept heated with steamat a pressure of 12 lb., so as to boil the size as it passesthrough the coil. This with modifications and improv
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisheretcet, bookyear1895
