Method and equipment for restraining while knitting the end port

Details Method and equipment for restraining while knitting the end port Method and equipment for restraining while knitting the end port

1998-11-23

2000-06-13

Worrell, Danny

Textiles: knitting

Feeding

With clamp or cutter

139434, D04B 1500

Patent

active

060734663

DESCRIPTION:

BRIEF SUMMARY
DESCRIPTION

1. Field of the Invention
The present invention relates to the field of textiles and, more precisely, to a method for restraining the terminal portions of cut thread protruding from collars for knit-wear and similar articles by inserting them inside the stitches which compose the articles during the course of knitting. The invention relates also to a method for making easier the separation of collars after knitting.
The invention, furthermore, relates to an apparatus for carrying out said methods.
2. Description of the Prior Art
Collars used for making knit-wear articles are knitted in strips, attached in turn to one another along one common side by means of provisional stitches which can be eliminated pulling a thread of union. At the end of the knitting, and after a possible dyeing step, every collar is attached to the previous and to the next not only by said thread of union but also by the thread itself of the stitches forming a loop at the side of union. Each collar can be of a solid color or comprise one or more bands of color, just as it can have multicolor designs on a background color.
After separating the collars, it is necessary to insert the ends of the cut thread inside the stitches of thread that form the collar, so that they do not protrude from the collar disturbing its aesthetic value. It is necessary to insert the end portions in the stitches in such a way that they cannot easily come cut.
For collars of a solid color, the operation is carried out only once, since, of the two end portions of thread which protrude from each collar, one will be directly inserted into the stitches with which the collar will be attached to the knit article.
On the other hand, when collars comprise more than one color, two additional ends of thread protrude from the edge for every color change. For example, for a collar having a band of color different from the background color, in the finishing steps, it will be necessary to insert five thread ends (four for the two changes in color and one at the end), whereas for a collar with two bands of color different from the background, it will be necessary to insert nine thread ends (eight for four color changes and one at the end).
The inserting step can be made manually, when the collars are finished, or automatically, while knitting.
The manual insertion, is carried out by inserting a special needle inside a portion of knitted collar until reaching the edge corresponding to the point from which the end portion of the thread extends. The end portion is then pulled inside the collar where it is restrained and hidden by the course of stitches forming the knit collar. This step requires skill and the use of a special needle, and is expensive, in particular when the collars present bands of color.
There is a known machine for the production of collars in which the operation of inserting the ends of protruding thread is performed during knitting by a mechanical needle. As the ends are produced, the needle inserts them between two successive courses of stitches, awaiting the moment of knitting to be withdrawn so that each end portion is restrained inside. However, in order to prevent the needle, when it withdraws, from dragging the thread end with it, pulling it newly out of the knitting, collars produced with this type of machine, have a tubular course of stitches which locally increases the thickness of the collar creating a poor aesthetic effect. Furthermore, this type of mechanism is even less appropriate when the knitting is very thin, since, in this case, the above-mentioned effect would be accentuated.
Another problem arises when separating the collars, in the steps of cutting and pulling away the connecting thread. In fact, the cutting step of the connecting thread is critical if operated automatically, since it could result in a damage for the collars.


SUMMARY OF THE INVENTION

The object of the present invention is, therefore, to provide a method for inserting the ends of thread protruding from the edges of collars and similar knit articles into

REFERENCES:
patent: 4957144 (1990-09-01), Watanabe et al.
patent: 5316050 (1994-05-01), Bertsch
patent: 5613377 (1997-03-01), Marchesi et al.
Patent Abstracts of Japan, vol. 17, No. 176 (C-1045), Apr. 6, 1993 & JP 04 333648.

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