US2241988A - Manufacture of knitted goods on the straight bar knitting machine - Google Patents

Description

y 1 1941- E. EISSNER EIAL 2,241,938

MANUFACTURE OF KNITTED GOODS ON THE STRAIGHT BAR KNITTING MACHINE Filed March 14, 1939 Patented May 13, 1941 MANUFACTURE KNITTED GOODS ON THE STRAIGHT BAR. KNITTING MACHINE Erich Eissner, Siegmar- Schonau, and Fritz Poster, Lichtensteln-Callenberg, Germany, assignors to Kalio, Inc., New York, N. Y., a corporation of New York Application March 14, 1939, Serial No. 261,818 I In Germany March 15, 1938 6 Claims.

This invention relates to improvements in the manufacture of knitted goods on the straight bar knitting machine, in which loop transfer takes place within the width of the fabric.

If, in the-production of fabric, for example footwear, loops have to be transferred on to adjacent needles on which loops are worked or reinforced by special threads, then, during transfer, the thread, which serves for the production or reinforcing of adjacent loops, is taken along by the transfer points through the number of loops to be transferred, because the corresponding thread guide is not displaced therewith in the transferringioperation, as is the case in narrowing for example. The-result of this is that the thread ispulled out of the thread guide and is brought into a wrong position in relation to the selvedge needle of the part of the work that is made or reinforced with special threads, on which needle the adjacent loops of the portion of the work that lies further inwards are covered. The thread is thus brought into a wrong position in relation to the inkers and is seized by the wrong. sinker when the sinkers proceed to sinking and dividing. The result of this is that large and loose selvedge loops are formed which are disadvantageous to the appearance of the goods.

According to the invention, the formation of loose selvedge loops is avoided by shortening the neb or nebs of the dividing sinker or sinkers of the fiat knitting machine which is or are associated with the selvedge needle or selvedge needles of the portion of the work which is made or reinforced with a special thread. The number of the dividing sinkers depends, in this case, on the number of loops which are to be covered.

As already mentioned, the invention is also applicable .to the method, for the production of hosiery in which heel parts are subsequently Joinedtoconnectedly worked pieces of hosiery consisting of legs and feet and the initial rows of the side parts of the feet, which are. likewise run on to the needle row of the knitting machine, are connected with the inner selvedge loops of the heel parts by consecutive widening. In carrying out this method, operations in which rows of heel loops are formed alternate with transfer operations in which loops of the side parts of the foot are transferred to the selvedge needles of the, for the time being, newly formed heel row. In this case also, the thread for the production -of the heel parts is' taken along through the number of loops that are to be covered and is pulled out ofthe thread guide by the outside needle of the transfer device. This can be avoided if the nebs of the sinkers that are adjacent to the selvedge needles of the heel parts are shortened.

The improvement can also be employed with i advantage in the case of knitting machines with thread 3.

patterning devices,- for example, knitting machines with a lace attachment.

The invention will now be explained with the aid of the drawing:

In the drawing,

Figs. 1 to 3 show how displacement-of the thread takes place in the transfer operation with the usual construction of sinkers of the straight bar knitting machine.

Fig. 4 shows the construction of the sinkers according to the'invention and the resulting thread guidance and Fig. 5 is a view of part of the shortened sinker.

In the drawing, only a few needles of the needle bar of the straight bar knitting machine are shewn together with the front ends of the sinkers and a few covering needles with a part of the covering needle-bar. The knitting machine itself is not shown, since it is an ordinary knitting machine in which the needles, sinkers and transfer points are actuated in the known manner. I I p On the needles I, la and lb, there are located loops of a portion of work which is made with a thread 5 and with the corresponding thread guide vIi. On the left of the needles I, there he the needles 2, 2a and 2b of-the needle bar, on

- which needles another part of the work is made with another thread guide and with another In order easily to distinguish the threads, the thread 3 has been shown thin and the thread 5 has been shownthick. The loops 4 are sunk, toward the middle of the work. The

thread guide 6, in this case, arrives in the posi-' Now, it is assumed tion represented in Fig. 1. that three loops of the inner portion of the work are transferred by the three transfer points-l, la and lb through two wales towards the right, so that the loops of the needle 2 'cometo lie on the needle la, those of the needle in. are brought on to the needle I and those of the needle 2b on to the needle 2., This transfer may be, effected for the purpose, for example; of patterning the fabric. In this case, the thread 5 is, as a rule, a reinforcing thread and theloops on the needles I, la, and lb are sunk from the thread 3 or, in the case of a heel frame, the transfer can be effected for the purpose of obtaining a conncc I tion of the loops 3 with the loops 4.

As shown in Fig. 1, the thread 5 is taken along with the transfer point I, so that the thread now places itself around the needle Ia. In Fig. 2, there is shown the position of the sinkers-i. e. the dividing sinkers V1, Va and jack sinkers K1, Kz-afterthe completion'of the transfer operation. The transfer points I, Ia and lb have been returned to their position of rest; As shown in Fig. 2, the thread 5 is now held fast by the dividing sinker Va. If the thread guide 6 is now moved to the right afterthe upward movement needle I a loop which results in a loose selvedge loop.

Fig. 4 shows the position when. according to the invention, the sinker which is adjacent to the needle I has been shortened to such an extent that the neb of this sinker can hold fast the thread displaced by the transfer point. On the movement of the thread guide 6, the thread which has been pulled out of the thread guide by the covering needle is now first again pulled up and places itself around the selvedge needles only as desired, 1. e. the thread takes up the position the formation of tight sel that is necessary for vedge loops.

This operation will be described more particu larly in connection with the usual operation of the needles,- transfer points, sinkers and dividers during a loop transfer operation as follows:

- of the frame needles, the thread forms round the ,tion, would wrap around the outside nose, or if- 2,241,css

needle), the yarn 6 instead of remaining hung on the nose of the V divider will fall 0! and so not form the undesirable yarn loop, as clearly shown in Fig. .4. v I

A short neb is used only on the divider because undesirable loops are'not formed by the longnosed Jack sinkers, and also because the iack sinker nose at a knitting juncture, as for instance .the sinker K (Fig.1) must have a nose long enough to reach through the needles 'so that the yarn running to the last needle through the carrier tube 5 at the time the yarn loops are drawn off the sinker noses during the normal process of knitting, will remain on top of the jack sinker neb of the jack sinker immediately to the right of the last active needle, as otherwise the yarn upon reversal, a'sfor instance in the Fig. 4 posiit were short enough, the jack sinker K (Fig. 4)

would not elevate the yarn highqenough to permit this and succeeding jack sinkers to properly form the next course of kinks.

The carrier tube 6 prior to the coming down of the loop lifting points I in the Fig. 1 position, comes to rest over the divider Y theyam 5 extending from the fabric to the carrier tube from the left-hand sideof the needle I over.

the top ofthe sinker K as the loop lifting points I are moved down between the sinkers prior to their two-needle shift to the right, the point I is in line with the needle 2 and therefore causes the yarn I to lay to the right of the point I. As. the loop-liftlng points are shifted to the right two indexes, so that the point I is in line with the needle la, which is in the position the points are shown in Fig. 1, .the yarn 5 between the carrier tube I and thev fabric, is shifted with the point. I andthe leading transferred loop tothe I right as shown in Fig. 1, it being understood thatthis shifting of the loop lifting points takes place as in ordinary cotton type machines. with the entire fabric well above all the sinker noses so that the said noses cannot interfere with the shifting of the fabric and the shifting of theyarn i. ,After'the narrowing points transfer their v= loops to theneedl'es, the fabric is'again, as in ordinary Cotton machine practice, brought downv underthe sinker noses, and the sinkers and di-' viders are brought forward so that if the divider V. has an ordinary long nose as shown in the yarn [will be left wrapped around the nose- Fig.2,

of this divider as shown in Fig. 2, but due to the incoming of all the jack'sinkers, more particu- -larly sinkers K (Fig. 2), the yarn 5 is as in I ordinary Cotton practice, positioned by the throat of this sinker K to the back side of the needle, so thatas. the needles rise, the yarn is wrapped around the needle I as isneoessary'. but instead of it=being wrapped around this needle under the sinker noses, it is wrapped around this needle undesirable'loose loop at the reversal, whereas if the divider W has a neb short enough so that its forward end is somewhat to the back of the back shank or the needle (beard shank side of the Fig. 5 shows a view of the front end of the sinker V2. The number and kind of sinkers to be shortened depends upon the position of the sinkers in relation to the correspondingselvedge needles and up n the number of loops to be trans ferred.

We claim:

1. In a knitting, machine, knitting instrumentalities including a needle series, Jack and di- I tube and the fabric to shorten its length to normal prior to the next Ooulier action ers. I, a

2. In a knitting machine, knitting instrumentalitles including a needle series, jack and diof the sinkviding sinkers, yarn feeding means, loop lifting points arranged to shift certain of the loops of the fabricand transfer the same to adjacent needles whereby the yarn betweenIthe carrier tube and fabric is lengthened, a carrier arranged tofeedyarntocertainoftheneedles only,said" knitting instrumentalities being constructed and arrangedto cause the yarn extending between the carrier tube and the fabric .to shorten its length to normal prior to the next Coulier action 0f the sinkers.

' 3. In a str lisht' bar knitting machine having knitting instrumentalities including a needle se- ,ries, jack and dividing sinker-s, a yarn carrier arranged to feed yarn to certain only of the reason of the fact that the yarn I lies over the a top of the nose of the divider V. above the sinker noses as shown in Fig. 3, thereby forming a very needles forming an inner selvage edge, and loop lifting .points arranged to shift certain of the loops of the fabric and transfer the same to adjacent needles including a needle forming said inner selvage edge whereby the yam'between the carrier tube and fabric is lengthened, the jacksinkers having nebs of sufficient length to extendbetween the needles, and the dividing sinker associated. with the inner selvage needle having a shorter neb to permit unobstructed passage between said latter neb and the needle series of the feeding yarn extending from the carrier and displaced withthe transferred loops.

r 4. In a straight bar knitting machineha knitting instrumentalities including a needle seriw, jackand dividing sinkers, atyamcarrier arranged to feed yarn to certain only of the needles forming an inner selvage edge, and loop.

lifting points arranged to shift certain of the loops of the fabric and transfer the same to adjacent needles including a needle forming said inner selvage edge whereby the yarn between the carrier tube and fabric is lengthened, certain of ries, jack, and dividing sinkers, yarn feeding means including a yarn carrier arranged to cooperate with any designated intermediate needle of the series to form an internal selvage, and loop lifting points arranged to transfer onto said inner selvage and adjoining needles, fabric loops held on needles adjacent to said selvage needle and formed with a different knitting yarn, certain of the dividing sinkers having a neb of less than normal length to permit unobstructed passage between the neb and the, needle series of the feeding yarn extending from the carrier and displaced with the transferred loops, said certain sinker being located between a designated selvage needle and the needle on which the transferred loop carrying with it the. displaced feeding yarn is placed.

6. In a straight bar knitting machine having knitting instrumentalities including a needle series, jack and dividing sinkers, yam feeding means including a yarn carrier arranged to cooperate with an intermediate needle of the series to form an internal fabric selvage with respect to fabric loops formed of a different knitting yarn and held on adjacent needles, and loop lifting points arranged to shift said adjacent fabric loops formed with the diflerent knitting yarn and transfer the same to said selvage and adjoining needles to form a juncture between the two sets of loops, the dividing sinker located between the selvage and adjoining needle having a short neb to permit unobstructed passage between the. neb and the needle series of the feeding yarn extending from the carrier and displaced with the transferredv loops. ERICH EISSNER.

FRITZ PESTER.

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