Elastic and non-elastic narrow fabrics : $b and a chapter on narrow fabrics made on knitting machinesBrown, Samuel
History
Elastic and non-elastic narrow fabrics : $b and a chapter on narrow fabrics made on knitting machines
Brown, Samuel
Elastic fabrics; Looms; Rubber industry and trade; Textile fabrics; Weaving
The formation of a cloth having the novel quality of allowing for a
greater woven length at the outer edge of the collar than at the band,
properly graded throughout so as to meet all the requirements of a collar
in comfort and fit, at the same time providing for the insertion of the
scarf so that it will run easily, and also allowing for the production
of a variety of styles, calls for features in manufacturing that are
different in many respects from the making of a flat fabric.
HEAVY LOOM REQUIRED
The first essential is a loom of sufficient strength and firmness to
withstand the heavy beat of the lay resulting from packing in the
filling, where an aggregate weight of 1,000 pounds for each individual
piece must be carried. The looms which are now being used have from
12 to 16 pieces, so that it will be seen that they must be very rigid
indeed properly to care for the weight carried on the combined pieces,
and maintain uniform picking. In order also to get the requisite shed
opening, the strain on the cams and cam jacks is severe, so that
provision for ample strength at these parts is essential.
CONE-SHAPED TAKE-UP ROLL
The long-sided formation of the cloth is produced by the use of a
cone-shaped take-up roll, as shown in the illustration, which has a slope
of 1 inch in 6 inches. Above this cone-shaped roll is hung a straight
roll, which swings freely to different angles, so as to take care of the
slack delivered to the take-up roll. It will be noticed that one leg of
the swinging roll is longer than the other, thus allowing the straight
roll to set in proper position over the cone.
At first thought it would seem advisable to provide a reverse cone-shaped
take-up roll, as shown in the illustration, which has a slope of 1
[Transcriber’s Note: It’s possible that a line of text was missing here
from the original printing, as the sentence doesn’t make complete sense]
the impracticability of such an arrangement and the straight roll with a
free movement as described is more desirable. It is also necessary, or at
least advisable, to use a slightly tapered roll on the breast beam, over
which the cloth passes.
WOVEN IN THREE WIDTHS
The fabric woven is made in three widths, 4¼ inches, 4¾ inches and 5¼
inches, with the folding line in different positions in each width, so
as to provide for different styles. The great amount of stock employed
over these widths, and the difference in the take-up between one side
of the web and the other, makes it necessary to divide the warps into
sections and carry considerable weight on each, so as to obtain a perfect
clearance in the shed, and pack the filling in uniformly.
THE WEAVE
The weave employed is an ordinary double cloth plain, made with face,
back, binder and gut. It is necessary to have 2 back, 2 binder, 4 face
and 4 gut warps. The accompanying table will show the number of threads
required in each warp, together with the weights carried on each one.
Public-domain text, read in full here on John Shaqi.
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