GB2116217A

GB2116217A - Rotary knitted pouch heel

Info

Publication number: GB2116217A
Application number: GB08303559A
Authority: GB
Inventors: Jan Andro; Bedrich Zupka
Original assignee: Elitex Zavody Textilniho; Elitex Koncern Textilniho Strojirenstvi
Current assignee: Elitex Zavody Textilniho; Elitex Koncern Textilniho Strojirenstvi
Priority date: 1982-02-15
Filing date: 1983-02-09
Publication date: 1983-09-21
Also published as: IT8319556A0; CS231618B1; DE3303108A1; GB8303559D0; GB2116217B; IT1193672B

Abstract

A rotary knitted pouch heel comprises a series of successive incomplete courses (4.1 to 4.N) between adjoining terminal courses (1 and 2) of leg and foot parts. Each incomplete course has at each end at least one tucking loop (5.1 to 5.N and 6.1 to 6.N). In one embodiment as shown the series of incomplete courses are shortened from both the leg and foot parts to a transverse axis of symmetry (10) where a complete course (3) is provided to which the tucking loops are linked on. In another embodiment the series of incomplete courses are lengthened from both the leg and foot parts to a transverse axis of symmetry and the tucking loops are linked on to the adjoining terminal sources of the leg and foot parts. In each case the course to which the tucking loops are linked on is longer than any incomplete course. Such a pouch may be formed in other knitwork pieces. <IMAGE>

Description

SPECIFICATION Rotary knitted pouch heel The present invention relates to a rotary knitted pouch heel, particularly for fine hosiery for ladies, as e.g. half-hose, panti-hose and similar.

The known pouch heel for hosiery and socks is formed of a series of successive incomplete courses, which are entangled between continuous courses of the leg and foot part of the hosiery.

Such incomplete courses are knitted in a known reciprocatory manner on one of the feeds comprised in the knitting machine.

The reciprocatory knitted pouch heel is of high quality.

The device for knitting such a heel, however, complicates considerably the cam system, as well as the motion mechanism of circular small diameter knitting machines. Moreover, the application of this device in circular knitting machines has a very unfavourable effect on the efficiency of the knitting machine which is up to 2.5 times less than the efficiency of circular knitting machines which do not comprise such a device. Therefore, the reciprocatory knitted heel is expensive to produce.

Rotary heel knitting is also known. On a heel made in such manner, the pouch is formed either by shaping the knitting on a form by means of heat, or the heel is shaped directly on the foot by making use of the high elasticity of threads now available.

As already known, a heel formed in such manner is of substantially inferior quality than the reciprocatory knitted heel however, its demands for a device necessary to form it are incomparably inferior, too. Therefore, the prevailing part of the present knitting machines is adapted only for rotary knitting of heels.

The end-use properties of rotary knitted heels are sometimes improved, e.g. in such manner, that a so-called additional thread is added into the heel part of the knitwork, for the purpose of reinforcing the said part of the knitwork. A disadvantage of this improvement of a rotary knitted heel consists in that the position of the heel part of the knitwork is not secured upon wearing, and therefore not popular.

The purpose of the present invention consists in forming a rotary knitted pouch heel, which is comparable in its properties with a reciprocatory knitted pouch heel.

According to the present invention there is provided a rotary knitted pouch heel, comprising a series of successive incomplete courses, linked on between the leg and the foot part of hosiery goods, each incomplete course having both at its front and rear end at least one tucking loop each of which is linked on to a course longer than the longest course of the series of successive incomplete courses.

The maximum advantage of the heel formed in such manner is its conformity in use and appearance with the reverse knitted heel, while the efficiency of the circular knitting machine is not expressively reduced. The present invention is particularly suitable for small diameter circular knitting machines with electronic needle selection, as the time necessary for knitting a rotary knitted pouch heel according to the present invention is practically the same as for the already known rotary heel, as the rotary knitted pouch heel according to the present invention can be knitted in all feeds of the knitting machine, without reducing the speed of rotation of the needle cylinder and without the necessity to provide the knitting machine with an additive patterning device.

Embodiments of the present invention will now be described by way of example, with reference to the accompanying drawings, in which: Fig. 1 shows a rotary knitted pouch heel with successive reduction of the length of successive incomplete courses towards a transversel axis of a symmetry of the heel; and Fig. 2 shows a rotary knitted pouch heel with successive extension of the length of the successive courses towards the transversel axis of symmetry of the heel.

The exemplary embodiments in Figs. 1 and 2 are drawn for better understanding in reduced size, i.e. the complete number of courses and wales is not represented. The following symbols are used: symbol " ) " for a plain loop, symbol 1\ "for a tuck loop, and symbol " "," for a continuous loop.

In the exemplary embodiment, the last course of the leg part is denoted by reference number 1, while the first course of the foot part is denoted by reference number 2. Between the last course 1 of the leg part and the first course 2 of the foot part, the heel part is situated, which is formed of a series of incomplete courses 4.1, 4.2, 4.3, to 4.N.

The transversel axis of symmetry of the heel is denoted by reference number 10, and the series of incomplete courses, 4.1, 4.2, 4.3 to 4.N is arranged, relatively to said transversel axis of symmetry 10, symmetrically by mirror image. The denoting of the series of incomplete courses by reference numbers 4.1,4.2,4.3 to 4.N is, however, made for better understanding in only one half of the heel, although the following description is obviously intended for both parts arranged about the transversel axis of symmetry 10. The representation applies to both directions of knitting, i.e. from left to right and vice versa.

Each incomplete course 4.1,4.2,4.3 to 4.N of the series is defined both at its front and at its rear end by the appurtenant tuck loops 5.1, 5.2, 5.3, to 5.N and 6.1, 6.2, 6.3, to 6.N. The tuck loops 5.1, 5.2,5.3 to 5.N and 6.1,6.2,6.3 to 6.N may follow immediately the first or the last plain loop of the series of incomplete courses 4.1, 4.2, 4.3 to 4.N, or continuous loops 7.1, 7.2, 7.3 to 7.N and 8.1, 8.2, 8.3 to 8.N may be interposed therebetween.Each course from the series of incomplete courses 4.1, 4.2, 4.3 to 4.N on both its ends can have attached a single tuck loop 5.1, 5.2,5.3 to 5.N and 6.1,6.2,6.3 to 6.N and a single continuous loop 7.1, 7.2, 7.3 to 7.N and 8.1 , 8.2, 8.3 to 8.N. Possibly, several successive pairs can be placed there. In the exemplary embodiment as shown in Figs. 1 and 2, three successive pairs of loops are represented.

The exemplary embodiment as shown in Fig. 1 represents the situation at which the length of the successive incomplete courses 4.1, 4.2, 4.3 to 4.N in the series is gradually shortened, relative to the transversel axis of symmetry 10. The said shortening of the length is performed in such manner, that each successive course is shortened for two loops, relative to the longitudinal axis of symmetry 9 of the heel, in the direction towards the transversel axis of symmetry 10 and symmetrically relative to the longitudinal axis of symmetry 9, while the number of tuck loops and continuous loops at both ends of the incomplete courses remain unchanged.Course 3, which is longer than the longest course in the series of incomplete courses 4.1,4.2, 4.3 to 4.N, i.e. longer than course 4.1 which follows the last course 1 of the leg part, or which possibly precedes the first course 2 of the foot part, is placed in the transversel axis of symmetry 10.

Another arrangement according to the present invention is shown in Fig. 2. In difference from Fig. 1, the series of successive incomplete courses 4.1, 4.2, 4.3 to 4.N are arranged in such manner, that the longest course of the series of incomplete courses 4.1, 4.2,4.3 to to 4.N, i.e. the incomplete course 4.1, is located at the transversel axis of symmetry 10 and the shortest incomplete course 4.N is located in turn at the last course 1 of the leg part and the first course 2 of the foot part. The other features of the invention as specified with Fig. 1 are in complete conformity with the exemplary embodiment in Fig. 2.

The subject matter of the invention as represented in exemplary embodiment in Figs. 1 and 2 consists in that the ends of the series of incomplete courses 4.1 , 4.2, 4.3, to 4.N which are represented by tuck loops 5.1, 5.2, 5.3 to 5.N and 6.1,6.2,6.3 to 6.N and continuous loops 7.1,7.2, 7.3 to 7.N and 8.1,8.2,8.3 to 8.N are linked on a course, which is longer than the longest course in the series of incomplete courses 4.1 , 4.2, 4.3, to 4.N.Such course may be constituted either by course 3, which is laid into the transversel axis of symmetry 10 of the heel, when the length of the series of successive incomplete courses 4.1, 4.2, 4.3 to 4.N is gradually shortened in the direction towards the transversel axis of symmetry 10 of the heel, or the last course 1 of the leg part and the first course 2 of the foot part can be used in the situation at which the length of the series of successive incomplete courses is gradually extended in the direction towards the transversel axis of symmetry 10 of the heel.

The locking of the ends of the series of incomplete courses 4.1, 4.2, 4.3, to 4.N can be still improved in such manner, that highly elastic yarn is linked on to a course 3, or possibly to the last course 1 of the leg part and the first course 2 of the foot part, of at least the same length as the longest incomplete course from the series of incomplete courses 4.1,4.2,4.3 to 4.N, i.e. the incomplete course 4.1. Thus, the elastic forces preventing riding over of the free ends of the series of incomplete courses 4.1, 4.2, 4.3 to 4.N can be achieved also in such manner, that in course 3, or possible in the last course 1 of the leg part and in the first course 2 of the foot part, the loops of the knitwork are shorter than in the surrounding knitwork at least at the length of the longest incomplete course 4.1.

The present invention, although related in its exemplary embodiments to the forming of a rotary knitted pouch heel, is not exclusively restricted for being applied only for that purpose, as it is possible to apply said present invention with the same advantages e.g. for knitting pouch caps, or possibly any other part of knitwork, in which the formation of a pouch is required.

It is most advantageous. to use the present invention in small diameter circular knitting machines with electronic needle selection, as in this case no further patterning device is required for the knitting machine. However, the application of the present invention in mechanically controlled knitting machines cannot be excluded by any means, as its advantages, i.e. rotary pouch knitting in all knitting machines feeds, and thus a considerably increased efficiency of the knitting machine remains unchanged.

Claims

1. A rotary knitted pouch heel, comprising a series of successive incomplete courses, linked on between the leg and the foot part of hosiery goods, each incomplete course having both at its front and rear end at least one tucking loop each of which is linked on to a course longer than the longest course of the series of successive incomplete courses.

2. A rotary knitted pouch heel as claimed in Claim 1, wherein the length of the series of successive incomplete courses is shortened towards a transversel axis of symmetry of the heel and extended in direction from the transversel axis of symmetry of the heel.

3. A rotary knitted pouch heel as claimed in Claim 1, wherein the length of the series of successive incomplete courses is extended towards a transversel axis of symmetry of the heel and shortened in direction from the transversel axis of symmetry of the heel.

4. A rotary knitted pouch heel as claimed in Claim 2, wherein the said course which is longer than the longest incomplete course, and to which the tucking loops are linked on, is laid in the transversel axis of symmetry of the heel.

5. A rotary knitted pouch heel as claimed in Claim 3, wherein the tucking loops are linked on to the last course of the leg part and the first course of the foot part.

6. A rotary knitted pouch heel as claimed in any preceding Claim wherein between the tucking loops and the first and last loop of each course from the series of incomplete courses, continuous loops are interposed.

7. A rotary knitted pouch heel as claimed in any preceding Claim, wherein highly elastic yarn is linked on to the said course which is longer than the longest incomplete course, at least in the length of the longest incomplete course.

8. A rotary knitted pouch heel as claimed in any preceding Claim wherein in the said course which is longer than the longest incomplete course, the knitwork loops are shorter than in the surrounding knitwork, at least at the length of the longest incomplete course.

9. A rotary knitted pouch heel substantially as hereinbefore described with reference to Fig. 1 of the accompanying drawings.

1 0. A rotary knitted pouch heel substantially as hereinbefore described with reference to Fig. 2 of the accompanying drawings.