File:Weaving; a practical guide to the mechanical construction, operation, and care of weaving machinery, and all details of the mechanical processes involved in weaving (1909) (14591243900).jpg

Identifier: weavingpractical00amer (find matches)
Title: Weaving; a practical guide to the mechanical construction, operation, and care of weaving machinery, and all details of the mechanical processes involved in weaving
Year: 1909 (1900s)
Authors: American School of Correspondence Nelson, H. William (Hector William), b. 1869
Subjects: Weaving
Publisher: Chicago, American School of Correspondence
Contributing Library: The Library of Congress
Digitizing Sponsor: Sloan Foundation

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Text Appearing Before Image:
Fig. 28. (See also Fig. 38.) quicker than with the jacketed vat, thus effecting a considerable
saving; and that the size vat can be more readily cleansed. See
Fig. 28. Immersion Roller. The yarn passes under an immersion
roller, which is made of copper and arranged so that it can be
raised or lowered, according to the amount of size desired on the
yarn. If the roller is low in the vat, thereby having more of its
surface in the size, it will take longer for the yarn to pass through
the size, and it will absorb more.

42

75 H. P. INDUCTION MOTOR DRIVING TWISTERS AND SLASHERS
Dwight Mfg. Co. Text Appearing After Image:
WARP PREPARATION. 35
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Squeeze Rolls. The yarn on leaving the size box passes
through two sets of squeeze rolls. There are some instances
where only one set of rolls is used, but this method does not give
good results, even with fine yarn, while with coarse yarn the
results are very poor. The two lower rolls of each set are copper;
the roll on the top of each copper roll is solid iron. The solid
rolls should be covered with an especially prepared flannel cloth,
which is almost a felt. These coverings should be taken off once
every week and allowed to soak in water for a day or two, from
Satur-day until Monday morning, for instance. Flannel cloths
make the best coverings, because they allow the yarn to sink into
the cloth to a slight extent, whereas cotton cloths become hard
and glazed with the size, and not only tend to flatten the yarn,
but cause it to be drawn through the rolls before it is thoroughly
squeezed of unnecessary size. It is beneficial, also, to wash the
rolls every time the machine is stopped, that is, at noontime and
evening.

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