Sewing – Special machines – Darning
Patent
1993-07-14
1995-02-14
Crowder, Clifford D.
Sewing
Special machines
Darning
D05B 300
Patent
active
053885384
DESCRIPTION:
BRIEF SUMMARY
The present invention concerns a process to create a raised motif, according to a given pattern, on a tufted textile material. It is also concerned with a device for implementing this process.
The invention has found a particularly advantageous usage in industries and arts and crafts that are concerned with carpet related textile materials.
A known process to create a raised motif on a tufted textile material, carpet for example, consists of cutting, according to the technique of engraving, the tufts found on the desired pattern. This known process has obtained good results on that which concerns the desired raised impression, but nevertheless is limited because it does not allow for, in the case of a plain textile, the possibility to associate the color to the design thus created. Inversely, processes that allow a colored decor to be obtained, such as weaving, ink projection, or the implementation of colored tufts, do not produce the raised effect.
Also, the technical problem to be solved by the means of the present invention is to propose a process in accordance with the preamble by which it will be possible to accomplish raised and colored motifs.
The solution to the technical problem given is, according to the present invention, notably remarkable as the said process consists of crushing the said tufts situated on the said pattern with the help of at least one crushing device, the said crushing device constituting, at least in part, the said motif.
Thus, the raised effect is obtained by crushing the tufts of the textile material whereas the color of the motif can vary at will according to the chosen color for the crushing device.
As an example, the crushing device is constituted by a jointed sewn thread that accomplishes a concave design in the textile material.
In another implementation mode of the process according to the invention, the crushing mode is constituted by a braided sewn element, such as a sewn cord with the help of invisible thread. One can thus obtain areas of raised motifs in relation to the concave areas made with the help of a jointed sewn thread.
It can be noted that the process of the present invention has the advantage in that it is non destructive. Indeed, the tufts are crushed and not cut as in the case of engraving work. It is possible, if so desired, in case of wear of the crushing device for example, to remove the crushing device and to straighten the tufts. The textile material thus returns to its original structure.
The implementation of the process that corresponds with the invention poses the difficulty that the surfaces of the textile material to be treated can be very large and currently there exists no controlling means by which the crushing operations anticipated by the invention can be carried out on such large areas.
Also, another technical problem to solve by the objective of the present invention is to propose a controlling device that allows for an easy implementation of the invention process.
A solution to this technical problem, specially meant for an industrial usage of the process that corresponds with the invention, consists of a controlling device that comprises rails, called rail-bearing grooves, mobile, in which the extremities are susceptible to slide into the respective rail-bearing grooves, under the action of the first driving device, the said transversal rails being separated by an interval at least equal to the thickness of the said textile material and each presenting a tool-bearing longitudinal groove, to the said work head, the work head and the spool being jointly mobile and susceptible to slide into the respective tool-bearing groove under the action of another driving device, so that the work head and the spool accomplish the said crushing mode by covering the pattern of the said motif.
In this system, the textile material is fixed while the transversal rails move to cover a certain length of the said textile material.
According to another system in which, on the contrary, the rails carrying the work head and the spool are fixed and the textil
REFERENCES:
patent: 359142 (1887-03-01), Fechtman
patent: 2066545 (1937-01-01), Shuttleworth
patent: 2172224 (1939-09-01), Sailer
patent: 2607042 (1952-08-01), Schloss
patent: 5103747 (1992-04-01), Resta et al.
patent: 5241919 (1993-09-01), LaGreca
Chekroune Marie-Louise
Chekroune Suzanne
Crowder Clifford D.
Lewis Paul C.
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