US2445883A

US2445883A - Bias tubing

Info

Publication number: US2445883A
Application number: US573364A
Authority: US
Inventors: Katz Julius; Frank P Majoros
Original assignee: SUPERBA Manufacturing CO Inc
Current assignee: SUPERBA Manufacturing CO Inc
Priority date: 1945-01-18
Filing date: 1945-01-18
Publication date: 1948-07-27
Anticipated expiration: 1965-07-27

Description

J i ,"1 ,1. KATZETAL 2,445,883

BIAS TUBING Filed Jan. 18, 1945 2 Sheets-Sheet 1 Julius KATZ FRANK I. MAU ROS INVENTOR5 M ATTORNEY.

July 27, i948. KATZ T A 2,445,883

BIAS TUBING File d Jan. 1a, 1945 I 2 Sheets-Sheet 2 INVENTORHSY TuhusKA-rz FRANK P MAzr'o-R'os W ATTORNEY.

Patented July 27, 1948 UNITED STATE v BIAS TUBING Julius Katz, Bronx, and Frank P. Majoros, Brooklyn, N. Y., assignors to SuperbaManufacturing 00., Inc., New York, N. Y., a corporation of New York Application January 18, 1945, Serial No. 573,364

2 Claims. (01. 112-63) 'Eflhis invention relates to themethod of form ing ,cloth intobias seamed tubing in which the bias seam does not run helically throughout the len th of the tubing, but is disposed diagonally of the cloth and is made up ofseparate spaced spi alc nv lut onsi i i i .Heiical y bia seamed tubing is being u a limited extent in the bag industry, but the complicated method employed to produce the artic'le have considerably hindered wider use in this field, It is the object of the presentinvention to provide a cloth tubing in which the threads are diagonally placed with respect to each other and the; bias cutting of the threads is controlled so that the angle or degree of bias cut will predetermine the position, of the threads. Bias seam tubing possesses a resiliency, as does all bias cut cloth materials, and according to the present invention the degree'..of resiliency is'predetermined by the angle or degree that the threads are disposed. In using bias tubing for bagging purposes, it is necessary to control the stretch of the bag and the present method accurately exercises such control a i The present invention has the further advantage of producing tubular bagging material, of any, size, efficiently, quickly and inexpensively. This is accomplished by superposing strips upon each other or by dividing the bias strip longitudinally into as many sections as desirable and then by seaming the divided sections .togetheralong their longitudinal sides so that a bag tubing is produced of the desired diameter.

The objects of this invention are accomplished by means of the several steps in the method hereinafter described, set forth in the appended claims, and illustratively exemplified in the accompanying drawings, in which:

Figures 1 and 2 are elevational views showing the progress of a strip of woven cloth material, from a flat state into a tubing which is then rotated spirally into the path of a blade and finally severed into a bias strip;

Figure 3 illustrates the step of forming the bias strip into bias tubing;

Figure 4 is a side view of the bias tubing showing the disposition of the spiral seam with respect to the longitudinal side seam;

Figure 5 is a substantially transverse sectional view of bias tubing taken on lines 55 of Figure 3;

Figure 6 illustratively exemplifies the step of converting the bias tubing into strip wherein the direction of the threads of the original material of Figure 1 are reversed to, produce a stripof cross cut material; y i Figure '7 is an elevational view oiatubingmaterial of knitted, woven or braided construction in which no seam is present and from which a bias strip is being cut in the manner of Figure 2 Figure 8 is an elevational view of a bias strip of Figure 7 being formed into a biastubing by seaming together, the longitudinal side edges of the bias strip, in the manner of Figure 1;

Figure 9 is an elevation-a1 view of a-tubing ma terial which s fo m d yusin tw Ir-mor ia strips of the material and attaching them ,together along their longitudinal side edges to form a tubing of any diameter required forbagging,

FigurealO is aplan view of astrip ofbias material embodying attached diamond shaped bias pieces. i n

Referring to the drawings, and especially Figures 1 and 2,1 we illustrate a straight ,l-engthof cloth or similar material which is,.folded longitudinally of itself-audits side edges stitchedtogether .to form atube, the tube being moved along in a spiral direction into the 'path of a cutting element which severs the tube into a continuous bias strip. This is the well known method of pro,- ducing bi-asstrip material.

The nextmove in the, presentmethod, see Figures 3 to 5, involves the stepof tubing the bias material by'bringin-g together the longitudinal side edges of the strip and stitching or otherwise seaming them to form a .bias seamed tubing illustratively exemplified in Figures 3 and 4; Figure 4 being an elevational view of the tubing and illustrating the arrangement of longitudinal and interrupted spiral seams. Thelongitudinal stitch.- ing forming the seam intersects the crossed bias threads of the material forming an angle which is either substantially less than or substantially greater than a right angle.

In the drawings, Ill denotes the straight cloth strip and l I the seam formed by joining together its opposite longitudinal side edges. The tubing l2 thus formed is fed spirally over and along a mandrel l3 by means of feed rollers 14, the material being severed into a bias strip l5 by means of a cutting element l6 arranged on the mandrel in the path of the spirally fed tubing. The bias the ends of each diagonal seam being spaced from each other along the longitudinal seam and from the ends of adjacent diagonal seams.

The bias seamed tubing is finally cut into desired lengths and the open ends closed to \form bags.

It may become necessary to utilize the bias seamed tubing for other purposes, i. e., forproducing a strip of material in which the direction Referring now to Figure 9, we show at least two separate bias strips 15 attached together along their longitudinal side edges by means of scams 2*!) to form bias tubing 30. The purpose of this particular arrangement is to create tubular bagging of substantially any width or diameter depending upon the widths'aoi the bias strips used in-the construction. While the bias strips illustrated are those produced by the method of Figure 2, the strips may just a Well be those of the method of Figure 7.

Referring to Figure 10, the strip of bias material-comprises diamond shaped bias pieces 3| 10f; material attached together .by seams 32, the

tubing being formed by bringing tog-ether the longitudinal side edges and seaming the same longitudinally.

of the thread-s have been reversed. In other words,

such so-c alled cross cut material is illustratively exemplified'in Figure 6, which shows the bias seamed tub-ing 20 being fed spirally over a mandrel 2| and into the path of a cutter 22, which is disposed at an angle to the longitudinal axis of the tubing and at an angle to the diagonal seams I8 and longitudinal seam l9. In this cross out the cutter 22 severs the tubing along the threads which originally ran transversely of the cloth so that the strip 23 thus produced would appear approximately as shown in Figure 6.

In Figures? and 8, we have illustrated the steps required in the present method of producing bias tubing from tubular knitted, woven or braided material, i. e;, straight seamless tubing designated 23; The first step is to spirally rota-te the tubing 23' over amandrel 24 or other support so as to enable the cutter 25 to sever the material into a continuous seamless bias strip 26. The final step is to form the bias strip 26 into a bias tubing 21 bybringing together the longitudinal side edges of the bias strip and attaching the same by a row of stitching or other method of forming a seam 28. The longitudinal stitching forming the seam intersects the crossed bias threads of the material forming an angle which is either substantially less than or substantially greater than 'a right angle. As a result of this method, we have a bagging material which has 'only the longitudinal side seam 28 and which is provided with all of the desired resilienc of the bagging material of Figures 3 to 5. 1

Having described the present invention and the manner in which the several steps are carried out, what is claimed is:

1. A method of manufacturing tubular bias bagging material from unbiased tubular textile materi-al which comprises the steps of cutting said tubular material along the convolutions of a con-' tinuous helical line to obtain cut-edged bias material and thereafter joining the said bias material adjacent the cut edges to form tubular bias bagging material;

2. A tubular bagging material co cloth seamed along the adjacent longitudinal edges thereof to form a tube, the seaming inter secting the crossed bias threads of the material and forming an angle thereto which is either substan-tially less than or substantially greater than a right angle. 1

JULIUS KATZ. V FRANK P. MAJoRos.

REFERENCES CITED The following references are of record in the file of this patent:

1 UNITED STATES PATENTS prising bias