Sewing – Special machines – Embroidering
Patent
1987-07-29
1989-09-19
Falik, Andrew M.
Sewing
Special machines
Embroidering
112100, D05C 304
Patent
active
048670812
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention is directed to a device for embroidery machines for attachment of ribbons, braids or the like on a fabric background. The device includes an axially displaceable bar-like needle carrier with a needle for the embroidery or sewing thread, and a fabric pressure foot, through which runs the ribbon or the like to be applied and which is swivelable around the axis of a needle carrier. A shuttle is arranged behind the fabric background for receiving the shuttle- or tie-up thread.
2. Description of the Prior Art
The ribbons, laces, gimp yarn or braid are attached to a fabric background or embroidery base with devices of this type, wherein it is typical that this fancy material lies only on top of the embroidery base and is only fastened with same by sewing- or warp stitches. This type of shaping a fabric background or embroidery base is called soutache embroidery and installations of the above-mentioned type can be attached at embroidery machines. The fancy material is fastened to the embroidery base at short intervals by the needle- and shuttle thread and the threads used herein are so thin that they can be hardly seen in the finished product. Spectacular embroideries can be produced with this technology. In conventional soutache apparatus utilized in connection with embroidery machines, the fabric pressure foot serving as thread guide for the fancy material can be pivoted around the needle only by a moderate amount, which considerably limits the pattern possibilities, since this guide for the fancy material can only be swiveled so far that one has the assurance of avoiding that the ribbon- shaped or braid-shaped fancy material twists and winds itself up in a manner that it can no longer be applied satisfactorily.
It is, therefore, the aim of the invention to further develop and perfect these known devices. Particularly, the limited choice of patterns in the known devices because of the limited swivelling of the fabric pressure foot serving as a guide for the fancy material is to be completley eliminated.
SUMMARY OF THE INVENTION
The solution of this task is achieved in the invention, in that the needle carrier or needle bar is housed in a hollow shaft rotatable with respect to the needle bar. Also the front side of this hollow shaft facing the material background or the embroidery plane comprises radially extending grooves arranged diametrically with respect to each other. Webs which are provided at the rear side of an annular disk-shaped retainer for the material pressure foot engage in the grooves. The retainer is penetrated by the needle or the needle bar and is connected with the lifting mechanism for the material pressure foot. At least the front side segment of the hollow shaft is received by a bushing rotatable relative to the hollow shaft. The inside wall of the bushing comprises recesses extending in circumferential direction and extending sickle-like at opposite regions, the radial extent of the recesses facing in opposite directions. The distance between the external flanks of the webs is somewhat smaller than the sum of the external diameter of the segment of the hollow shaft comprising the grooves and the largest radial extent of a sickle-like recess.
The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and specific objects attained by its use, reference should be had to the drawings and descriptive matter in which there is illustrated and described a preferred embodiment of the invention.
BRIEF DESCRIPTION OF THE DRAWING
In the drawing:
FIG. 1 is a longitudinal cross-sectional view of the device according to the present invention;
FIG. 2 is a front view, partly in section, of the material pressure foot of the device of the present invention;
FIG. 3 is a side view, partly in section, of the material pressure foot of the device of the present invent
REFERENCES:
patent: 4513672 (1985-04-01), Tajima
patent: 4535709 (1985-08-01), Kuhnis
patent: 4543897 (1985-10-01), Heinzle
patent: 4577569 (1986-03-01), Okugawa
Falik Andrew M.
Hofer Josef
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