US3168882A - Method of tensioning yard goods to be embroidered - Google Patents

Description

Feb. 9, 1965 J. SCHOLL ETAL 3,168,882

METHOD OF' TENSIONING YARD GOODS TO BE EMBROIDERED 4 Sheets-Sheet 1 Filed Jan. 15, 1962 INVENTORfi: Jose Sc! 0 ll L-ol BY are! Sara 0 n Feb. 9, 1965 J. SCHOLL ETAL METHOD OF TENSIONING YARD GOODS TO BE EMBROIDERED 4 Sheets-Sheet 2 Filed Jan. 15, 1962 INVENTORS Jose 5c; o// Eff dwarfs! -Sqr son Feb. 9, 1965 J. SCHOLL ETAL 3,163,332

METHOD OF TENSIONING YARD GOODS TO BE EMBROIDERED 4 Sheets-Sheet 3 Filed Jan. 15, 1962 w PP.

INVENTORS: J sef Sc o/l Byduarol Sal-son Feb. 9, 1965 J. SCHOLL ETAL 3,168,382

METHOD OF TENSIQNING YARD GOODS TO BE EMBROIDERED Filed Jan. 15, 1962 4 Sheets-$heet 4 INVENTORfi: Jo s e 9 o 1/ E var-cl Sang-o United States Patent :s'isassz V I METHOD OF TEN SEONING YARD GOODS TO BE EMEROHDERED Josef Scholi, Krefeld, and Eduard Sarson, Willich, Germany, assignors to Maschineufabrik {Earl Zange Ahtienvice for tensioning yard goods to be embroidered? When 3,168,882 Patented Feb. 9, 1965 in a manner known per se, is controlled by a punch card,

; is provided between the winding-off and the winding-up a surface of textile material tobe embroidered exceeds the surface (traversing width) over which the needle of the embroidering machine moves, it is necessary to unclamp and reset the holding means for the material. This frequently encounters difiicultiesand requires, in particular with loose materiaL that great dexterity be exercised which requires considerable time. g

The present invention relates to such embroidering of yard goods which are wound off from a roller and, following the embroidering operation, are wound up again onto another roller. The surface of the material to be emboidered is during the embroidering operation firmly clamped into a frame.

It is, therefore, an object of the present invention to provide a method of and device for tensioning yard goods to be embroidered, which will overcome the above mentioned drawbacks.

It is another object of this invention to provide a method of and device for tensioning yard goods to be embroidered, which will greatly facilitate the resetting and clamping of the respective yard goods surfaces for embroidering operations.

These and other objects and advantages of the invention will appear more clearly from the following specification in connection with the accompanying drawings, in which:

FIG. 1 diagrammatically illustrates a side view of a device according to the present invention showing the embroidering frame after the completion of an embroidering operation.

FIG. 2 is a top view of FIG. 1.

FIG. 3 diagrammatically illustrates the device of FIG. 1 in the position prior to the embroidering operation.

FIG. 4 is a top view of FIG. 3.

FIG. 5 shows the position of the embroidering frame with the yard goods in loose condition.

FIG. 6 is a top view of FIG. 5.

FIG. 7 diagrammatically illustrates a section through the closed clutch forming a part of the device according to the invention.

FIG. 8 is a side view of FIG. 7.

FIG. 9 illustrates the open slip clutch forming a part of the present invention.

FIG. 10 diagrammatically illustrates the device for clamping the clamping frame.

In order to obtain a simplified adjusting and resetting of yard goods to be embroidered, it is suggested in conformity with the present invention, that, following the embroidering of an area of the yard goods, the entire free web of material be tensioned, then the embroidering frame be loosened and after being disengaged from the punch card apparatus, be displaced by the respective longitudinal repeat pattern, whereupon following the clamping of the material in the clamping frame and the reengagement with the punch card apparatus, the material is loosened between the frame and the winding-off and winding-up rollers. For these operations only a few manipulations are necessary.

With a device for carrying out the method according to the present invention, the embroidering frame which,

roller for the yard goods, the rollers being connected through the interventionof a chain drive and a slip clutch to a hand wheel for tensioning the textile material.

Mounted on the shaft of the winding-up roller is a ratchet-wheel, whereas the slip clutch is mounted on the shaft of the winding-off roller. For purposes of loosening the material, the pawl cooperating with the ratchetwheel can be lifted out of the latter by means of a foot lever. The needle strips provided for laterally tensioning the textile web are adapted to be pulled toward the embroidering frame by means of eccentric levers. For purposes of displacing the embroidering frame, there is provided a link system which is operable by a foot lever and by means of which the embroidering frame is displaceable against a stationary but adjustable abutment.

More specifically, with reference to the drawings, the textile material 1 to be embroidered is wound around a roller 2. When the material is being withdrawn from this roller 2 it is passed below the guiding .roller 3 and after passing through the clamping frame 4 moves over to the cloth beam 5.

The clamping frame 4 consists of the lower part t and the upper part 4-". The lower part 4' is in a manner known per se controlled by a pantograph 36' (FIG. 2) and a punch card apparatus 31 along two coordinates within the range of the sections a and b respectively. The upper portion 4" is adapted to be raised and in FIG. 1 is shown in raised condition in dash lines and marked with the reference numeral 4. The clamping of the upper and lower parts 4' and 4" after the material 1 has been introduced into the clamping frame is eifected by a link system 32 and 33 in FIG. 10. This link system is actuated by a handle 34. The upper part 4% is adapted to be raised or lowered by means of the angle levers 35 and 36. The needles move in vertical direction only and, in a manner known per se, are actuated by an embroidering apparatus 10. FIG. 2 indicates that for instance four needles are arranged in the embroidering head adjacent to each other.

During the embroidering operation (see FIGS. 5 and 6), the material to be embroidered has to be loosened between the guiding rollers 3 and 3a to such an extent that the embroidering frame l will have a freedom of movement corresponding to the magnitude of the sections a and b. According to FIG. 2, the needles 9 have embroidered the embroidering field a x b. During this operation, the clamping frame 4 with the embroidering material has moved toward the right. The needles will thus be located at the starting point for the embroidering of the adjacent successive embroidering fields a X .5 according to FIG. 4.

In order to make this field a x b accessible and to permit the new rightward movement of the embroidering frame 4, the frame has to be reset toward the left by the section a'-=a. This displacement of frame 4 requires that the material 1 be first tensioned and that the pantograph 39 be disengaged from the punch card apparatus 31. The frame is displaced against a fixed abutment 1% (FIG. 1) by means of a foot lever ill and a link system 13, 14 and 15 and by means of a nose 16. This nose engages frame 4 at a hook 17. After releasing the foot lever, spring 19 pulls nose 16 toward the right.

The disengagement through the intervention of the clutches 28 and 29 (FIG. 2) is effected by the link system 30, 3d and a foot lever not illustrated.

The above mentioned tensioning of the material 1 is effected by a hand wheel 21 (FIGS. 7 and 8). The winding oif and winding up rollers 2 and 5 are interconnected by a chain drive 22. The tensioning is effected by means effected automatically through the intervention of a Slip clutch 2a which is mounted on shaft 2a of roller 2 and is operable, by a foot lever 26 and a link system. As will be evident in particular from FIG. 7, hand wheel 21 and ratchet-wheel 23 are mounted on shaft 5a of roller 5.

The loosening of the textile web is effected by means of the hand wheel 21 and 21' through the intervention of a pawl 25 adapted to be operated by a foot lever 27. The lateral tensioning of the textile web is effected by the needle strips 7 (FIG. 2) which are displaceable by eccentric lever 6. I

It is, of course, to be understood that the present invention is, by no means, limited to the particular construction shown in the drawings but also comprises any modifications within the scope of the appended claim.

What we claim is:

A method of embroidering successive adjacent sections of a web of yard good material rolled from a winding-off roller onto a winding-up roller by means of an embroidering frame and a punch card apparatus connected to the frame to control the movement thereof, which includes the steps of: tensioning the entire length of said web of material between said rollers, clamping a region of the tensioned web of material in said frame, releasing the tension of said web of material between the frame The equalization of the tension of the textile web between rollers 2 andS and the clamping frame 4 will be V and the rollers, engaging the frame with the punch card apparatus, embroidering an area of the clamped region while moving the frame under the control of the punch card apparatus, disengaging said punch card apparatus from the frame, again tensioning said material between said rollers, unclamping the frame from the material, displacing said embroidering frame in longitudinal direction of said web of material in a direction opposite to the direction of movement of the web of material from said winding-off to said winding-uproller and by the respective length of the respective repeat pattern being embroidered, clamping the new section of the web of'material to be embroidered into said frame, and releasingthe tension on the web of material between said frame and said rollers to allow for a movement of said frame by the length of the respective repeat pattern, again connecting the frame to the punchcard apparatus, and embroidering another area. of said web of material adjacent to the first mentioned area.

References Cited in the file of this patent UNITED STATES PATENTS 1,362,272 Stern Dec. 14, 1920 1,382,976 Hauser June 28, 1921 2,007,819 Tillett -4 July 9, 1935 2,760,454 Lombach Aug. 28, 1956 2,889,792 Scheibel June 9, 1959

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