US1770740A

US1770740A - Curvilinear elastic fabric

Info

Publication number: US1770740A
Application number: US307424A
Authority: US
Inventors: John V Moore
Original assignee: Moore Fab Co
Current assignee: Moore Fab Co; MOORE FABRIC Co
Priority date: 1928-09-21
Filing date: 1928-09-21
Publication date: 1930-07-15
Anticipated expiration: 1947-07-15

Description

July 15, 1930. I .1. v. MOORE 1,770,740

CURVILINEAR ELASTIC FABRIC Filed Sept 21, 1928 21 1 w 24 W Z4 22 A J6 15 15 IN 12 10 J0 12 J) 11% @121 32 L11 .1! L 1L 1 A 1mm? Patented July 15, 1930 'UNITED" STATES PATENT. OFF CE worm v. MOORE, or rAwrUcKrrr, RHODE ISLAND, AssIeNoR' To MOORE FABRIC coM- 'IANY, or PAWTUGKET;

RHODE ISLAND, A CORPORATION. OF-RHODE ISLAND CU-RVILINEAR ELASTIC FABRIC Application filed September 21, 1928. Serial No. 307,424.

on relates to the production of This inventi 1 a narrow elastic fabric having an inherent fabric may be produced;

curvilinear shape, such a fabric being of great utility for many purposes. T It is the object of my invention to provide an elastic fabric of relatively narrow width in which the curvilinear form is developed-in the "weaving operation and is preserved throughout the finishing operation. A further object is to provide-a curvilinear elastic fabric in which the fabric is of substantially uniform Weight and thickness in each unit area thereof. I r have also provided an improved method of producing such a curvilinear elastic fabric, the several features of which will be hereinafter described My invention further relates 'to arrangements and combinations of.parts which will be hereinafter described and more particularly pointed out in the appended claims. A preferred form of the invention, and mechanism adapted to the production thereof, are shown in the drawings in which a Fig. 1 is a perspective view of parts of. a narrow Ware loom on which my improved Fig. 2 1s a front View warp beams;

Fig. 3 is a plan view of a portion of the fabric;

' Fig. 4 is a diagrammatic sectional. view,

of one of the tapered taken along the line H in Fig. '3;

Fig. 5 is an enlarged detailsectional view ofa portion of the fabric; and.

Fig. 6 is a diagrammatic plan ,view, illustrating the distribution of the warp and weft threads.

Referring'to the drawings, my improvedv curvilinear fabric is preferably formed of a plurality of elastic warp threads 10, nonelastic warp threads 11, and non-elastic fill-.

ing threads 12. The elastic warp threads 10 may be either plain rubber threads or may be covered rubber threads, depending upon the type of fabric tobe produced.

The filling threads 12 extend from selvage to selvage of the fabric and assume a more or less fan-like relation, as they are necesfabric, thus providing form amount of combined warp and weftof the fabric, the in number as thethe warp beam sarily more widely spaced on'the longer or outer curved edge of the fabric tinuously longitudinally of the fabric and as indicated in Figs. 3, 4 and The principal objectp f gradually increasing the numberof warp threads in this manner is to compensate for the separation of the Weft threads toward a substantially unithreads in each unit area warp threads increasing weft threads are more widely spaced.

While the warp threads 10 preferably vary in spacing as above described, they are preferably of uniform size or diameter from edge 2 edge of the fabric, as clearly shown in My improved fabric great variety of weaves, thereof is illustrated in elastic warp 10 and a may be made in a but a preferred form Fig. 5, in which an pair of non-elastic the outer edge of the he

warp threads

10 and 11 extend coni warps 11 are inserted between adjacent dents 15 of'the reed 16 (Fig. 1), while the next adacent reed spaces are preferably left empty.

The effect of this arrangement is to crowd the non-elastic warps 11 closely against the elastic warp 10, thusholding the elastic warp firmly in a tube-like pocket, so that the fabric may be cut into sections without undue shrinkage of the elastic warps after cutting.

With the construction shown, it is found that the lateral expansion of the elastic warp when released by cutting causes it to tightly fill the narrow pocket or tube between the adjacent non-elastic warps, so that it is immediately held from further shrinkage.

In the production of a curvilinear elastic fabric, it is essential that the warp threads be under substantially uniform tension throughout the width of the fabric. In order to :attain this result, I provide a tapered warp beam 20 (Fig. 1) for the elastic warps 10 and a similarly tapered warp beam 21 for the non-elastic warps 11. The taper of barrels is selected to give the increased length of Warp required for the throughout ing the weaving process.

longer edge of the fabric without increasing the tension thereon. The

warps

10 and 11 are drawn along guide-rolls 22 (Fig. 1) and are threaded through two or more harnesses 24 and through the reed 16 previously described, the reed being mounted upon a lay 25.

The woven fabric passes around a tapered guide-roll 26 on the breast beam and around a tapered take-up roll 30, against which the fabric is held by a loose guide-roll 31. The fabric is then wound on a tapered cloth roll It will be seen that the curvilinear shape of he fabric is produced naturally by varying the length of the warp threads from edge to edge of the fabric, and that these warp threads are at all times held under substantially uniform tension. The provision of the

separate warp beams

20 and 21 permits me to increase. or decrease the tension on the elastic warp threads-10 asdesired, independent of the tension on the non-elastic warp.

threads 11. It will be understood that the warp threads 10 are stretched substantially to their fullest extent during the weaving" operation, so that the fabric may be rendered highly elastic by thesubsequent shrinkage thereof.

It is essential that the curvilinear shape of the fabric be preserved throughout tlie'sizing and finishing of the fabric and special mechanism has been provided for sizing and drying the fabric without disturbing or distorting its inherent curvilinear'shape. The details of this mechanism, however, form no part of the present invention and are not claimed herein.

Having described the construction and method-of.production of my improved fabric, it will be seen that the fabric is produced in an inherent curvilinear shape, with the warp threads .under substantially uniform tension the width of the fabric. The curvilinearshape of the fabric does not depend on distortion of the fabric after weaving but is the inherent shape assumed durduced will naturally preserve its original curvilinear shape much better than a fabric in which the curve is produced by distortion or manipulation after the fabric is woven.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is:- 1. A woven fabric which is elastic longitudinally and substantially non-elastic transversely and which includes a plurality of rubber warp threads, said fabric bein inherently curvilinear to a predetermine radius, and the rubber warp threads thereof being of substantially uniform diameter and being woven under substantially uniform tensionthroughout the width of the fabric.

A fabric thus pro- A woven fabric which is elastic longitudinally and substantially non-elastic transversely, said fabric including rubber and non-elastic warp threads and being inherently curvilinear to a predetermined radius and the fabric being of substantially uniform'weight and thickness per unit area from s'elvage to selvage thereof.

3. A woven fabric which is elastic longitudinally and substantially non-elastic transversely and which includes rubber and nonlastic warp threads, said fabric being inherently curvilinear to a predetermined radius and inherently elastic and having said ruboer warp threads bound firmly between said non-elastic warp threads, all of said warp threads increasing uniformly in length from selvage to'selvage of said' fabric and being under substantially uniform tension in the finished fabric. Y I

4. A Woven fabric which iselastic, longitudinally and substantially non-elastic transversely, andwhich includes rubber and nonelastic warp threads, said fabric being inherently-curvilinear and having pairsof nonelastic warps closely adjacent each rubberwarp withsa-id latter warp therebetween,

firmly between said-non-elastic warp threads, the groups of warp threads each comprising a pair of non-elastic warps and a rubber warp" being substantially sp'acedfromeach other. a curvilinear 5. The method of weaving elastic fabric which consists in supplying a plurality of both rubber and non-elastic warps, each kind of warp being distributed throughoutthe width of the fabric, in providing' all of the rubber warps of substantially uniform diameter, in placing all of the rubber warps under a substantially uniform tension at the point of weaving, and in weaving said warp threads into an inherently curvilinear elastic fabric while said rubber warp threads are thus held under substantially uniform tension.

'6.'The method of weaving a curvilinear elastic fabric which consists in supplying a plurality of both rubber and non-elastic warps, each kind of warp being distributed throughout the width of the fabric, in providing all of the rubber warps of substantially uniform diameter, in placingall of.

the rubber warps under a substantially uniform tension at the point of weaving, and

" ering said warps to the weaving point at rates of feed varying. uhiformly from edge to edge of the fabric whereby an lnherent curvilinear set is produced in said elastic fabric.

8. The method of weaving a curvilinear elastic fabric which consists in supplying a plurality of both rubber and non-elastic warps, each kind of warp being distributed vthroughout the width of the fabric, in inserting a rubber war and a pair of non-elastic warps between adJa-cent dents of a reed while leavmg the next ad'acent reed spaces empty,

thereby to crowd t e two non-elastic warps closely against the single rubber warp to hold said rubber warp firmly, in placing'all of the rubber warps under a substantially uniform tension, and in delivering all of said warps to the weaving point at rates of feed varying uniformly from edge to edge of the fabric whereby an inherent curvilinear set is produced in said elastic fabric.

In testimony whereof I have hereunto affixed my signature. JOHN V. MOORE.

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