FR2781817A1 - Knitting a pocket on to a knitted fabric at a flatbed knitter uses structured movements of the yarns between the needles of the leading and trailing beds in four phases - Google Patents

Abstract

Knitting a pocket on to a knitted fabric at a flatbed knitter uses structured movements of the yarns between the needles of the leading and trailing beds in four phases to develop the pocket. To knit a pocket in a weft knitted fabric, an initial row (R1) of stitches is formed with a yarn (b) which, at the zone (A) in front of the pocket, extends between the needles (2) of the leading needle bed and those (3) of the trailing bed with a regular repeat. For the pocket zone (B), all the needles (2) of the leading bed are used together with alternate needles (3) of the trailing bed, leaving the free needles (3a). In the second phase, the weft (a) is laid at the first row (R1) of stitches. In the third phase, respectively, the zone (A) in front of the pocket is given a repeat of at least 1/2 with a stitch of the yarn (b) at the leading bed and transfer to a needle with a stitch at the trailing bed and, in the pocket zone (B), there is a repeat of at least 1/2 with a stitch of the trailing bed transferred to a needle with a stitch at the leading bed. In the fourth phase, a second row of stitches (R2) uses a yarn (c) worked in the zone (A) in front of the pocket with all the needles (2) of the leading bed, with a regular repeat, and with free needles (3a) alone at the trailing bed in the pocket zone (B). The weft yarn (a) is locked at the pocket zone (B) against the inner surface of one of the pocket walls by the stitches formed by the repeat of the ground yarn (b) on the needles of that wall.

Description

The invention relates to a knitting method for

  make pockets on a straight knitting machine in a halftone knitting.

  In a half-knit, all or part of the stitches of a row of

  stitches block a thread passing through the weft, of elastic type or not.

  It is already known in a rectilinear knitting machine to make pockets on a piece of jersey, not woven. As shown in the knitting diagram in FIG. 1, the production of the pocket uses at least three threads, namely a weft thread a, a bottom thread b, and a thread

additional c.

  In the areas outside pocket A, in FIG. 1, the bottom thread b goes from needles 2 of the front needle bed to needles 3 of the back needle with a constant carryover, here 1/1, while the additional thread c works only with the needles of the front needle bed with a constant ratio

  which is 1/2 here, that is, it skips every second needle.

  In the pocket area, represented at B in FIG. 1, the thread b works only with the needles 2 of the front needle bed and with a ratio of 1/2, while the thread c works only with the needles 3 of the back bed with a ratio of 1/2, offset from that of thread l. FIG. 2, which represents what an observer would observe the interval between the two needle beds of a rectilinear knitting machine operating according to the diagram of FIG. 1, makes it possible to note that, after completion of a complete cycle shown in C , the weft thread a is not blocked in the zone of the pocket B. As a result, this thread forms, in the pocket thus produced, a sort of float F which hinders the introduction of any insert into this pocket, and all the more so since this thread is not alone, but on the contrary is associated with as many threads as the pocket has

  need for knitting sequences according to the diagram in Figure 1.

  The object of the present invention is to remedy this drawback by providing a method of pocket knitting in a knitted fabric, freeing it from the weft threads and ensuring maintenance.

  effective of these weft threads in basic knitting.

  To this end, the method according to the invention consists - in a first phase, of making a first row of stitches with a thread which, outside the pocket, extends between the needles of the front needle bed and that of the rear needle bed with a regular ratio, and, in the pocket area, works with all the needles of the front needle bed and only with at least one needle out of two in the back needle bed, leaving needles free, - in a second phase, put in place the weft thread on the first row of stitches, in the same way in the non-pocket areas and in the pocket area, - in a third phase, respectively, out of the pocket, to be sampled with a ratio of minus 1/2 a stitch on the front needle bed and transfer it to a mesh needle on the back needle bed, and, in the pocket area, take with a ratio of at least one ratio 1/2 a stitch on the needle bed back to transfer it to a mesh needle of the a front needle bed, - and, in a fourth phase, to make a second row of stitches whose thread works, out of the pocket, with all the needles of the front needle bed with a regular ratio and, in the pocket area, with the only needles in the rear needle bed that have not worked in the

first phase.

  Thanks to this knitting process, in each pocket, the weft thread is blocked against one of the walls of the pocket and therefore releases

entirely this one.

  The mesh transfers in the third phase ensure effective blocking of the weft thread, both in the basic knitting and in the pocket, so that such pockets can be produced in knits comprising, in the weft, elastic threads and intended to form

  support or support articles and sleeves.

  The invention will be better understood with reference to the drawing

  schematic annexed illustrating the knitting process which has just been described.

  Figures 1 and 3 are knitting diagrams of a pocket, respectively, in a normal knitting and in a halftone knitting according to the invention, Figures 2 and 4 are plan views from above showing what would be seen by an observer examining the interval between two needle beds of a rectilinear knitting machine, during the production of a knitting piece according to, respectively, the knitting diagram of FIG. 1, and the knitting diagram of FIG. 4, FIG. 5 is a perspective view showing an application of

knitting according to the invention.

  The method according to the invention uses the same wires a, b,

  c, but knits them differently and in a different order.

  As shown in FIG. 3, the first phase of the method according to the invention consists in producing a first row R1 of stitches by means of the thread b which can, for example, be a thread participating in the

  constitution of the basic knitting of the article in which the pocket is made.

  In this first row of stitches and in part A without a pocket, the thread b works alternately on a front needle and on a rear needle by forming stitches ml. In zone B of the pocket, he works with all the needles 2 of the front needle bed, but only with one needle 3 out of two of the rear needle bed, thus leaving one free needle 3a every two needles. When this row is made, the weft thread a is put in place. In a third phase, there is a transfer of stitches from the front bed to the rear bed, as shown by the arrows 6 in the part without the pocket, and from the rear bed to the front bed, as shown by the arrows 7 in part B containing the bag. A fourth phase knits the thread c on an additional row R2 of stitches, and for example, as shown in FIG. 3, in the part without pocket A, only on a needle bed and for example the one before, taking one needle out of two and , in the pocket part B, only on the other needle bed, and for example the rear needle, by taking one needle out of two, and more particularly the needles 3a of this rear needle needle which did not receive stitches in the first phase of realization of the first row R1 of meshes, but which carry a waiting mesh

from the previous cycle.

  Figure 4, which shows the evolution of knitting as and when it is made, comprises in R3 an additional row of stitches corresponding to the end of a phase of making basic knitting A without a pocket. The reference 8 appearing in the second row R4 of FIG. 4 represents the pending stitches remaining on the needles 3a of the rear needle bed. The third row R5 shows, by arrows 6 and 7, the original meshes which are taken for the carryovers, and the next row R6

  shows, by the references 6a and 7a, the destination of these reports, that is to say

  tell the mesh needles on which the stitches are attached.

  Finally, the last row R7 shows that, in zone B of the pocket, one of the walls and for example the front wall of the pocket has meshes m2 which trap the weft thread a and block it against the

front face of this wall.

  This figure 4 also shows that, in zone A without pocket, the weft yarn a is perfectly blocked by the stitches m3 carried over to the rear, so that this knitting process can be used in a knitted weft, not only by a synthetic thread, but also by an elastic thread, such as rubber or synthetic thread, or by a very strong single-strand thread in stainless steel or carbon. It should be noted that the blocking obtained by the mesh transfers is much higher than that of the current process, according to FIGS. 1 and 2, and this both in zone A without pocket and in that B with pocket, and makes it possible to obtain woven knits which can be used for other purposes than the production of articles of compression or support, such as technical knitwear usable in industry. Figure 5 shows a toggle 19 in which can be achieved, by this knitting process, on the one hand, side pockets 20 adapted to receive stiffening ribs and, on the other hand, a central pocket 21 adapted to receive a silicone pad or cooling pocket. Such pockets can also be made in any other support or support article, and for example in a slip for carrying

a urinary bag.

  This manufacturing process makes it possible to continuously produce pockets, open on one side or on both sides and having various shapes, in any area of a knitted piece, thus eliminating the need for any offensive and demanding seam of

  occasions increasing the cost of the item.

  In other words, the method according to the invention makes it possible to produce articles which are practically finished, more pleasant to wear and less

expensive to make.

Claims (2)

  1. A method of knitting a pocket in a screen knitted fabric, characterized in that it consists: - in a first phase, of making a first row (R1) of stitches with a thread (b) which, in the area ( A) outside the pocket, extends between the needles (2) of the front needle bed and those (3) of the rear needle bed with a regular ratio, and, in the pocket area (B), works with all the needles (2) of the front needle bed and only with at least one needle (3) on two of the back needle needle leaving the needles (3a) free, - in a second phase, to put the weft thread (a) on the first row (R1) of stitches, - in a third phase, respectively, in the zone (A) outside the pocket, to be taken, with a ratio of at least 1/2, one stitch of the wire (b) in the front bed and transfer it to a mesh needle (6a) of the rear bed, and, in the zone (B) of the pocket, to be sampled, with a ratio of at least a ratio of 1/2 a m aft of the rear needle bed to transfer it to a mesh needle (7a) of the front needle bed, - and, in a fourth phase, to make a second row of stitches, the thread (c) of which works in zone (A), outside of the pocket, with all the needles (2) of the front needle bed with a regular ratio and, in zone (B) of the pocket, with the only needles (3a) of the rear needle needle   who did not work in the first phase.   2. Weft knitted fabric comprising a pocket obtained by the method according to claim 1, characterized in that its weft thread (a) is, in the zone (B) of the pocket, blocked against the internal face of one of the walls of this pocket by meshes (m2) formed by transferring the bottom thread (b) to meshes (7a) of this wall.