US1885749A - Elastic lace braid - Google Patents

Description

I Nov. 1, 1932. H. MEHLER ELASTIC-LACE BRAID Filed June 13, 1932 INVENTOR Huquliehler at, Nev. i, 1932 UNITE srArs-s v rANr orrica nueo KEHLEB, or sacrum,- r anaemic Lassa Application filed June 1a; 1932. Serial No, 618,818.

I 5 strands and to ermit'the elastic strands to be stretched to eir elastic limit.

The particular braided elastic fabric with which this invention is concerned is manufactured on what is known as a one thread lace machine. That machine is similar to the ordinary braider but difiers from it in that it has individually controlled carriers govjerned by a jacquard mechanism so built that each carrier is controlled in its passage in the machine race track or circle by a predetermined attern. v Braide with the elastic threads are two distinctsets of non-elastic threads, the transverse or braiding threads and the longitudinall runnin bindin threads.

T e intro uction o elastic strands into the braid in a stretched condition from a moving carrier traveling in a race track is the only way in which the running binding thread paralleling the longitudinal elastic strands will receive suflicient yardage to allow the rubber or elastic,- after bralding, a stretch approaching its elastic limit.

lace braidedfabric made in that way,

when released, has its parallel running bind threads laying loosely next to the longituinal rubber strands. As soon as tension is placed on the fabric, these binding threads are forced tightl against the taut rubber strands of the fa ric, subjecting them to a somewhat similar tension to that given the rubber. Y

Moreover, it is well-known-that rubber itdoes not shrink, but the various other textile fabrics contained in any braid have aknown shrinkage under varied'conditions such as heat, perspiration, moisture absorption, etc. Thus, there is frequently a certain amount of shrinkage which the construction outlined above does not make allowance for.

The object of the present invention is to provide an improved elastic lace braid.

- A fuitherobject of the invention is to provide an elastic lace braid where the non-- elastic longitudinal binding -threads will wtrating the braiding and binding non-elastic never be placed under tension even when the rubber strands are stretched to their elastic limits.

Still another object of the invention is to provide an elastic lace braid with the above attribute and which is so constructed that there will be no creeping of the elastic v strands.

Acccrding't'o the invention, 111 im roved elastic lace braid is manufacture by e'eding co taut but untensioned elastic warp strands from stationary supply sources, feeding nonelastic threads from bobbins in the race track or circle so as to braid or interconnect in lace effect the several elastic warps, and feeding as other non-elastic threads from bobbins in limited portions of said racetrack longitudi nally and from side to side of a single warp, and in which the last bobbins change from one side of the elastic warp) to the other at an the point where the non-elastic braid threads cross the elastic strands and which, at that point, bind the said braiding threads to said elastic strds.

Between'the points wherethe first nonu elastic threads cross the elastic threads the longitudinal non-elastic threads will be twirled or 100 ed, thus providing expansible portions which will not be placed under tension even when the elastic strands are so stretched to their elastic limit.

The drawing illustratesan embodiment of H the invention and the views therein are as follows:

Figure 1 is a developed portion of the race track or race circle, and is for the purpose of description only, and

Figure 2 is an exploded viewof a portion of the finished fabric or braid, clearly illusthreads in relation to the elastic strands. 1 4

Referring now to the drawing, and particularly to Fi re 1, the longitudinal elastic strands are e d from spools 3 located at some convenient point beneath the race plate 4. The elastic strand is fed from the s 01 up through a tube 6 which extends throug a hole in the center of the gear stud 7 so'that the elastic warps are fed upward into the middle 10f the race track 8 in such a way that a 1 specially constructed jacquard formation interlocks in a set position.

' The carriers (1, a; b, b; ,0; and d, d; are controlled by jacquard movement so that they revolve around thecircles on each side m; m, m"; m and m"; are operating in a manner determined by the jac uard move- ,ments so that either mesh bac ground or whatever weave is desired, can be produced.

In Figure 2 a background of mesh is shown and it is to be understood that this may be varied, as desired, by the changing of the jacquard movements through the patterns cards.

In order that the longitudinal rubber strands may be kept from creepin an interlocking oi the running parall threads is made with the longitudinal rubber strands at certain intervals determined by both design and jacquard machine, andin the present instant, as indicated at 9.

The spools 3 are mounted in anti-friction bearings and may be of such size as will permit the elastic strands to be withdrawn from the same without stretch, the size of the spools being limited only by such weight as will not necessitate stretching of the elastic strands to turn the spools. If desired, suitablefeed-ofi mechanism can be arranged for feeding out the elastic strands as re uired by the machine, and just sufiicient to eep the same taut, but unstretched.

Thespindles a, a; b, b; 0 c; and. (1 d; are rovided with the usual tensioning means w hich may be varied and which determines the amount of feed from the bobbins on the" carriers so that the loops and pockets P of the twirled longitudinal non elastic strands may be varied to suit every individual case the object, however, bein that the loops and pockets of this twirled I read shall be sufiicient to permit the elastic strand along which it tic lnnit without placing any tension whatsoever upon the non-elastic threads,

With this method of construction a maximum stretch of as high as 100% to 125% can be imparted to the complete fabric withof the elastic out any resultin strain on the ion 'tudinal threads which bmd and interlock t e longitudinal elastic strands under even pressure from all sides. Thus the elimination of strain on the bindin ture of the braidad s eatly to the wear of the fabric, as even wit a maximum stretch threads interconnectin lays to be stretched to its elasor interlocking struc-' and holding 'the brai strands, the lbngitudinally much superior product in that the'formation of the interlocking threads around the elas tic not only eliminates the usual creeping, but binds the elastic strand tightly and yet permits a stretch of the same to its elastic By means of the twirling which produces the loops and pockets P, a iar superior elastic lace braid has been made on a one thread lace machine, without limiting the lace designs which may bejncorporated.

By using spools containing great yardage, I eliminate the necessity of tying the elastic strands, thus formin knots, which is necessary in the case of the use of bobbins,

'on account of the small yardage carried by a bobbin. These knots, when the fabric is are highlyobjectionable.

Of course, the elastic lace braid illustrated, and the particular mechanism described in connection with the process, may be varied in many ways without departing from the in-.

vention herein claimed.

I claim v 1. An elastic lace braid having elastic warps, transverse non-elastic braiding threads interconnectin the elastic warps and holding the braif againstsubstantial lateral extension, and double non-elastic set forth and hereafter .threads connecting the transverse threadsvat the points same cross each warp to bind the against substantial 3. An elastic lace braid having) elastictransverse aiding the elastic warps and holding the brai against substantial warps, non-elastic used on underwear, often causes chafing and the elastic warps air of non-elastic lateral extension, and non-elastic threads connectin the transverse threads and w'a only at the points said transverse threa I cross the war and bein twirled to permit each warp to stretche to its elastic limit without tensionin said twirled threads.

4. An elastic ace braid havin elastic warps, non-elastic transverse raiding threads interconnectin the elastic warps against substantial lateral extension, and a threads for each warp twirled loosely along the side of warp and binding thetransair of non-elastic verse threads to the w transverse the r w m 5. An elastic lece Y '1 warps, non-elastic braiding :r. 5 connecting the elastic warps, an

threads loosely twirled end side to side of eech elastic Warp said first threeds to seid was.

In testimony whereof I heve signed my m neme to this ificetion. v

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