US1452195A - Machine-made seam for knitted materials and the like - Google Patents

Description

Apr. 17, 1923. 1,452,195

. H. E. ESCHE MACHINE MADE SE AM FOR KNITTED MATERIALS AND THE LIKE 'Filed Jan. 13. 1922 INVENTEI fly/Jeff [La den 7420 BY A'ITDRNE %M%/ Patented Apr. 17, 1923.

HERBERT EUGEN ESCHE, OF CHEMNITZ, GERMANY.

MACHINE-MADE SEAM FOR KNITTED MATERIALS AND THE LIKE.

Application filed January 13, 1922. Serial No. 528,991.

T all whom it may concern Be it known that I, HERBERT EUGEN ESCHE, a citizen of Germany, residing at Chemnitz, Germany, have invented certain new and useful Improvements in Machine- Made Seams for Knitted Materials and the like, of which the following is aspecification.

The selvages of regular knitted mate-rials and the like, that is, such as have a firm marginal stitch, are often connected together by a seam. This work is carried out either by hand or with sewing machines specially built for the purpose, as the so-called whip- 5 stitch machine. Hence a difference is made between a hand-sewn seam and a machine sewn seam. When sewing by hand, the marginal stitches or marginal course loops can be sewn into with the sewing needle, but the connecting of the two selvages is effected by sewing threads running in straight lines.

While the seam will be tidy and look very well, it has not the extensibility of the material itself. Hence it does not stretch with the material, when the latter is stretched in the direction of its. width and this is found to be a considerable drawback. In addition to this, sewing by hand is inconvenient and entails loss of time.

While this work is carried out very rapidly with sewing machines, the two selvages are only caught together into a ridge, when using the kinds of whip-stitch hitherto known, and are connected together by threads, which also run more or less in straight lines, the result being that on the one hand the article suffers in appearance as regards the purpose for which it is to be used, while on the other hand the seam cannot have the same extensibility as the material itself. The fact that the seam forms a ridge and its lesser extensibility are great drawbacks of the whip-stitch seams as hitherto used. r

The invention does away with the drawbacks of the hand-sewn seam, alluded to, and with those of the machine-sewn whipstitch seams as used hitherto.

The seam itself is formed by two threads. The figure shows one way of forming the new seam.

In the new seam (as shown) one sewing thread a is passed in the form of loops through the salvage I and. the other sewing thread I) is also passed in the form of loops through the selvage 11, each thread passing under alternate loops of the respective selvages. One loop of the thread a is brought to the thread 5 in such a manner that a loop of the thread 6 passes through the loop of the thread a. The loop of the thread I) is brought to the thread a in such a manner that the next loop of the thread a passes through the loop of the thread Z). The thread loops of the two threads a and b are alternately interlocked in such a manner that, as clearly seen, each thread loop passes through a thread loop of the opposite thread and thereupon surrounds the next loop of this thread. Thus, the thread loops of the two threads pass through a thread loop of the opposite thread and surround the next loop of this thread whereby these loops are arranged in staggered relation to each other. The result of this arrangement is, that the seam does not lie over the selvages I and II, as was the case in the old seam, and does not draw the selvages together in a ridge, but that the seam lies between the selvages and does not rise up in a ridge. A further result is, that the seam does not only stretch as hitherto with the material in its longitudinal direction, but also in the transverse direction as well, which has not been possible hitherto.

I claim as my invention:

A. seam for knitted materials which comprise two selva-ges, embodying a thread for one selvage passing under alternate loops of that selvage; and a second thread for the other selvage passing under alternate loops of said other selvage in staggered relation to said loops of the first-named selvage, said threads being interconnected in such a way that one thread passes through a loop of the other thread and then around a sucoeed ing loop of said other thread and back through the loop through. which it first passes, the loops of each thread being disposed in staggered relation to the loops of the other thread. I

In testimony whereof I have aflixed my signature.

HER-BERT EUGEN ESCHE.

Witnesses RIoHD SoHoN, leur. KNABQHEN.

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