Textiles: weaving – Warp manipulation – Traversing
Reexamination Certificate
1999-04-06
2001-07-10
Falik, Andy (Department: 3765)
Textiles: weaving
Warp manipulation
Traversing
Reexamination Certificate
active
06257283
ABSTRACT:
FIELD OF THE INVENTION
The present invention refers to a method and apparatus for manufacturing textile articles with at least one additional warp.
BACKGROUND OF THE INVENTION
As it is well known, a fabric is obtained by interweaving two series of threads which are disposed orthogonally one to the other. On the loom, the warp threads are prepared in advance in predetermined number and length, and are longitudinally stretched parallel to each other. Interwoven between the suitably displaced weft threads, and perpendicular thereto, are the warp threads to form thereby the fabric. Formed on the sides of the fabric, to delimit the height thereof, are the two selvages which make up the edges of the same fabric.
The fabrics may be classified in relation to their intended use (clothing, interior design and technical fabrics), as well as to the interlaces that form them and to the elements which contribute to their formation. In this respect, four categories of fabrics may be defined. The simpler fabrics, formed by one warp and one weft, belong to the first category. Belonging to the second category are the fabrics formed by one warp and two or more wefts. The third category includes fabrics with two or more warps. Finally, the fourth category refers to fabrics exhibiting two or more warps and two or more wefts.
In particular, the fabrics of the third category, with two chains and only one series of wefts, have a so-called “underlying” warp intended to link the wefts; the other warp, which has instead the function of achieving either a solid or patterned effect, is called “additional” warp. Since the additional warp has a different evolution from the underlying one, the warping is provided on two distinct beams. Shown in
FIG. 7
is the profile of a warp belonging to a fabric of this type, where T indicates the weft, PO the first warp and SO the second warp. It should be noted that the additional warp develops orthogonally to the weft, likewise the underlying warp.
SUMMARY AND OBJECTS OF THE INVENTION
The weaving thus operated makes it possible to achieve only effects and patterns which are developed on the same plane of the fabric.
The main object of the present invention is to provide a method and an apparatus allowing the obtainment of non-linear effects, also of raised type, on fabrics belonging to the above mentioned third and fourth categories.
This result has been achieved, according to the invention, by providing a method and an apparatus having the features indicated in the independent claims. Further characteristics being set forth in the dependent claims.
By adopting the method according to the invention it is possible to manufacture fabrics suitable for clothing and interior design, and technical fabrics as well, with non linear effects, also of raised type, which can provide the fabrics for clothing and interior design with such aesthetical characteristic very much like those of knitted fabrics or those having embroideries or ornaments, and give the technical fabrics preset structural characteristics.
Moreover, an apparatus for carrying out the method according to the invention is relatively simple to make, cost-effective, reliable even after a prolonged service life and capable of being fully automated.
These and other advantages and characteristics of the invention will be best understood by anyone skilled in the art from a reading of the following description in conjunction with the attached drawings given as a practical exemplification of the invention, but not to be considered in a limitative sense
REFERENCES:
patent: 3463199 (1969-08-01), Crenshaw et al.
patent: 4429722 (1984-02-01), Herzog
patent: 6009917 (2000-01-01), Meyns et al.
Falik Andy
McGlew and Tuttle , P.C.
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