GB2026565A

GB2026565A - Method of linking-on elastic yarn

Info

Publication number: GB2026565A
Application number: GB7923230A
Authority: GB
Original assignee: Elitex Zavody Textilniho; Elitex
Current assignee: Elitex Zavody Textilniho; Elitex
Priority date: 1978-07-13
Filing date: 1979-07-04
Publication date: 1980-02-06
Also published as: IT1163686B; GB2026565B; IT7924313A0; DE2926737A1; CS199174B1

Abstract

The present invention relates to linking-on elastic yarn into knitworks in two cylinder circular knitting machines for manufacturing hosiery and similar goods. The knitting process is performed in the following manner: in the first feed, normal yarn is fed to needles distributed e.g. 1:1, and normal loops are formed on all needles. Behind the clearing point of the first feed, the needles are displaced into the closing position. When the formed loops are situated on the needle latches, elastic yarn is lapped into the needles. The needles are further displaced into the closing position and both the elastic yarn and the formed loops get below the needle latches. In the following feed, normal yarn is fed into the needles, which is interlocked with the elastic yarn, so that the latter becomes linked with the knitwork. In this manner, the elastic yarn is not lapped merely as weft threads and cannot be withdrawn from the knitwork upon breakage. <IMAGE>

Description

SPECIFICATION Method of linking-on elastic yarn The present invention relates to a method of linking-on elastic yarn into a knitwork in two cylinder circular knitting machines for hosiery goods and similar goods.

It is known to link on elastic, or possibly rubber, yarn into the knitwork in two cylinder circular knitting machines in such manner, that said yarn is not linked with the knitwork loops and is laid only like weft.

This method of linking-on is used mainly for knitting elastic welts of hosiery goods, or in sanitary goods.

The disadvantage of this method of linking-on elastic yarn consists in that said yarn can be withdrawn from the knitwork upon breakage, said knitwork thus losing its elasticity in the damaged parts. This damage usually takes place upon washing the knitwork.

The purpose of the present invention consists in substantially mitigating the said disadvantage and in establishing a method of linking-on elastic yarn, which would be suitable for linking-on yarn of high elasticity, as e.g. Lycra (Registered Trade Mark), or similar yarn.

The invention accordingly provides a method of linking-on elastic yarn into knitwork in two cylinder circular knitting machines for manufacturing hosiery goods and similar, in which elastic yarn is lapped into at least one needle group of the distribution, situated behind the clearing point of the feed in such manner that upon attaining the closing position of the needles said elastic yarn is lapped on the needle shanks, whereupon it is interlocked with the loops formed of yarn in the preceding feed with the new lapped yarn in the following feed.

The method and the knitwear according to the present invention are shown in the embodiments in form of examples in the accompanying drawings, of which Fig. 1 represents the lapping of elastic yarn into needles distributed 1 which are cleared into the closing position with loops on the needle latches; Fig. 2 shows the position of elastic yarn and old loops at the closing position of the needles; Fig. 3 shows lapping new yarn in a further feed, the elastic yarn and the old loops being situated under the needle latches; Fig. 4 shows a knitwork formed by the process as shown in Figs. 1 to 3; Fig. 5 shows a knitwork formed according to the preceding process, in which the lower needles form tuck loops from normal yarn in courses, in which is lapped elastic yarn;; Fig. 6 shows the same knitwork as shown in Fig. 5, in which the elastic yarn forms tuck loops together with the lower needles.

In a known two cylinder circular knitting machine for hosiery goods with two feeds, are knitted socks with elastic welts, into which is linked elastic yarn, e.g. Lycra. Upon knitting the welt, the needles are distributed 1:1 into lower needles 1 and upper nee dles 2. In the first feed, normal loops 01 are formed from yarn P1. Behind the clearing point of this first feed, both the lower needles 1 and the upper needles 2 are displaced into the closing position, whereupon, at the moment at which loops 01 are situated on the latches of both the lower needles 1 and the upper needles 2, elastic yarn E is lapped in the manner as shown in Fig. 1. In the further course, loops 01 and elastic yarn E get under the latches of both the lower needles 2, as shown in Fig. 2.In the following feed, new yarn P2 (Fig. 3) is lapped into the hooks of both the lower needles 1 and the upper needles 2, and normal loops 02 (Fig. 4) are formed, and linked with elastic yarn E, which is thus interlocked into the knitwork, or with yarn P2, respectively. Behind the clearing point of this second feed in sequence, new elastic yarn E' is lapped again into both the lower needles 1 and upper needles 2 from a second feeder, in the same manner as already mentioned, and in the first feed, elastic yarn E is interlocked with loops 01 or yarn P1.

By this procedure, welt knitwork as shown in Fig. 4 is formed, in which the elastic yarn E, orE', respectively, is linked on each course, Furthermore, it is possible to link on elastic yarn E in such manner that, for example, the lower needles in the second feed knit tuck loops of yarn 2, and elastic yarn E of lapped in the same manner, as specified above, but elastic yarn E' is not lapped any more. In this manner, knitwork as shown in Fig. 5 is formed. It is further possible to knit in such manner, that the lower needles in the second feed form tuck loops of yarn P2, elastic yarn E being lapped in such manner, as to remain on the latches of the lower needles, and to form together with yarn P2 tuck loops. In this manner, a knitwork as shown in Fig. 6 is formed.

Furthermore, it is possible to lap elastic yarn, within the scope of the present invention, directly on to the needle shanks, which are in the closing position or in a position near thereto, when the old loops are already on the needle shanks. The elastic yarn is then lapped through a special opening in the latch guide which is arranged in this point in each two cylinder knitting machine.

This linking-on ofelasticyarn is most suitable for needle distributions 2:2, 2:1, or 3:1. It is possible to link on the elastic yarn into each course or over one or more courses at various needle distributions in one or several feeds, this all depending on the kind of knitworkto be formed by the method according to the present invention.

The main advantage of the present invention con sists in that linking-on, or interlocking of elastic yarn into the knitwork is achieved in a simple manner.

Thus, said elastic yarn is not lapped merely as a weft thread and cannot be withdrawn from the knitwork upon possible breakage.

1. A method of linking-on elastic yarn into knit work in two cylinder circular knitting machines for manufacturing hosiery goods and similar, in which elastic yarn is lapped into at least one needle group

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Method of linking-on elastic yarn The present invention relates to a method of linking-on elastic yarn into a knitwork in two cylinder circular knitting machines for hosiery goods and similar goods. It is known to link on elastic, or possibly rubber, yarn into the knitwork in two cylinder circular knitting machines in such manner, that said yarn is not linked with the knitwork loops and is laid only like weft. This method of linking-on is used mainly for knitting elastic welts of hosiery goods, or in sanitary goods. The disadvantage of this method of linking-on elastic yarn consists in that said yarn can be withdrawn from the knitwork upon breakage, said knitwork thus losing its elasticity in the damaged parts. This damage usually takes place upon washing the knitwork. The purpose of the present invention consists in substantially mitigating the said disadvantage and in establishing a method of linking-on elastic yarn, which would be suitable for linking-on yarn of high elasticity, as e.g. Lycra (Registered Trade Mark), or similar yarn. The invention accordingly provides a method of linking-on elastic yarn into knitwork in two cylinder circular knitting machines for manufacturing hosiery goods and similar, in which elastic yarn is lapped into at least one needle group of the distribution, situated behind the clearing point of the feed in such manner that upon attaining the closing position of the needles said elastic yarn is lapped on the needle shanks, whereupon it is interlocked with the loops formed of yarn in the preceding feed with the new lapped yarn in the following feed. The method and the knitwear according to the present invention are shown in the embodiments in form of examples in the accompanying drawings, of which Fig. 1 represents the lapping of elastic yarn into needles distributed 1 which are cleared into the closing position with loops on the needle latches; Fig. 2 shows the position of elastic yarn and old loops at the closing position of the needles; Fig. 3 shows lapping new yarn in a further feed, the elastic yarn and the old loops being situated under the needle latches; Fig. 4 shows a knitwork formed by the process as shown in Figs. 1 to 3; Fig. 5 shows a knitwork formed according to the preceding process, in which the lower needles form tuck loops from normal yarn in courses, in which is lapped elastic yarn;; Fig. 6 shows the same knitwork as shown in Fig. 5, in which the elastic yarn forms tuck loops together with the lower needles. In a known two cylinder circular knitting machine for hosiery goods with two feeds, are knitted socks with elastic welts, into which is linked elastic yarn, e.g. Lycra. Upon knitting the welt, the needles are distributed 1:1 into lower needles 1 and upper nee dles 2. In the first feed, normal loops 01 are formed from yarn P1. Behind the clearing point of this first feed, both the lower needles 1 and the upper needles 2 are displaced into the closing position, whereupon, at the moment at which loops 01 are situated on the latches of both the lower needles 1 and the upper needles 2, elastic yarn E is lapped in the manner as shown in Fig. 1. In the further course, loops 01 and elastic yarn E get under the latches of both the lower needles 2, as shown in Fig. 2.In the following feed, new yarn P2 (Fig. 3) is lapped into the hooks of both the lower needles 1 and the upper needles 2, and normal loops 02 (Fig. 4) are formed, and linked with elastic yarn E, which is thus interlocked into the knitwork, or with yarn P2, respectively. Behind the clearing point of this second feed in sequence, new elastic yarn E' is lapped again into both the lower needles 1 and upper needles 2 from a second feeder, in the same manner as already mentioned, and in the first feed, elastic yarn E is interlocked with loops 01 or yarn P1. By this procedure, welt knitwork as shown in Fig. 4 is formed, in which the elastic yarn E, orE', respectively, is linked on each course, Furthermore, it is possible to link on elastic yarn E in such manner that, for example, the lower needles in the second feed knit tuck loops of yarn 2, and elastic yarn E of lapped in the same manner, as specified above, but elastic yarn E' is not lapped any more. In this manner, knitwork as shown in Fig. 5 is formed. It is further possible to knit in such manner, that the lower needles in the second feed form tuck loops of yarn P2, elastic yarn E being lapped in such manner, as to remain on the latches of the lower needles, and to form together with yarn P2 tuck loops. In this manner, a knitwork as shown in Fig. 6 is formed. Furthermore, it is possible to lap elastic yarn, within the scope of the present invention, directly on to the needle shanks, which are in the closing position or in a position near thereto, when the old loops are already on the needle shanks. The elastic yarn is then lapped through a special opening in the latch guide which is arranged in this point in each two cylinder knitting machine. This linking-on ofelasticyarn is most suitable for needle distributions 2:2, 2:1, or 3:1. It is possible to link on the elastic yarn into each course or over one or more courses at various needle distributions in one or several feeds, this all depending on the kind of knitworkto be formed by the method according to the present invention. The main advantage of the present invention con sists in that linking-on, or interlocking of elastic yarn into the knitwork is achieved in a simple manner. Thus, said elastic yarn is not lapped merely as a weft thread and cannot be withdrawn from the knitwork upon possible breakage. CLAIMS

1. A method of linking-on elastic yarn into knit work in two cylinder circular knitting machines for manufacturing hosiery goods and similar, in which elastic yarn is lapped into at least one needle group of the distribution, situated behind the clearing point of the feed in such manner that upon attaining the closing position of the needles said elastic yarn is lapped on the needle shanks, whereupon it is interlocked with the loops formed or yarn in the preced' ing feed with the new lapped yarn in the following feed.

2. A method as claimed in claim 1, in which the elastic yarn (E,E') is interlocked with normal and/or tuck loops.

3. A method as claimed in claim 1 or claim 2, in which the needles are distributed 1:1.

4. A method of linking-on elastic yarn into knitwork, substantially as herein described with reference to the drawings.

Printed for Her Majesty's Stationery Office by The Tweeddale Press Ltd., Berwick-upon-Tweed, 1980.

Published atthe Patent Office, 25 Southampton Buildings, London, WC2A lAY, from which copies may be obtained.