DE1635820A1 - Ladder-free, seamless stocking with a compression effect - Google Patents

Description

PATENT LAWYERS

DIPL-ING. CURT WALLACH DIPL.-ING. GÜNTHER KOCH 1635820

DR. TINO HAIBACH

8 Munich 2, 13. January 1966

OUR MARK: 1Q 701 -

Kayser Bondor Limited, Baidock, Hertfordshire / England Ladder-free, seamless stocking with a compression effect

The invention "relates to seamless hosiery with compression or supporting effect, d »h. seamless hosiery knitted at least in part from elastomeric yarns or are knitted so that the fabric when it is over the leg of the Bearer marked "ö" gen ^ .willj__on this one inwardly directed Applying compression »" ^ * ^ - - ^ _,.

A very well known yarn used in the manufacture of

Compression hosiery generally used "

is a polyurethane material known as Spandex that was developed by the Du Pont Co. and used under the registered trade name "Lycra" is «Bei When used to make hosiery, these yarns are usually finished with nylon spinning »

A large part of the nylon hosiery that is currently in common use has a knitted structure, which when getting stuck the formation of running

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meshes. This is achieved in that the tissue it is knitted or warp knitted in such a way that holding stitches are placed along each knit stick at certain intervals "These old grips are generally made by this manufactured that placed in spaced-apart rows of pockets of the fabric spaced-apart tuck stitches and that these courses are knitted with larger loops than the other courses, so that each the loops of the previous row of stitches that lie between the captured loops of the tuck stitches, have a tendency to stretch.

With the intention of making seamless hosiery that both exert a certain compression effect and are run-free, the same process is also used with elastomeric yarns in the manufacture of hosiery applied with compression effect. It has been found, however, that the elastomeric yarns do not have as good a holding effect as the ITyIon yarns, while on the other hand, the retaining stitches the elasticity of the knitted or crocheted fabric in an undesirable manner to decrease.

It is therefore an object of the invention to provide improved seamless hosiery that has both a certain Exert compression effect as well as ladder -

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are free, and also to address the process steps required to manufacture such hosiery.

The invention therefore relates to a ladder-free, seamless stocking with a compression effect, "in which at least the "leg length spaced closed Has dog stitches rows of elastomeric yarn and at least two successive, intermediate closed rows of round stitches made of non-elastomeric yarn, ^

the rows of stitches spaced apart from one another between the above made of elastomeric yarn, and in the case of the spaced-apart retaining loops, the two intermediate ones Connect rows of stitches with one another, with the aforementioned folding stitches spaced over the individual r.stitch sticks are distributed.

The leg length of the stocking is thus composed of recurring groups of successive rows of pockets, and each such group has at least 1

three rows of ashes, namely the above-mentioned row of ashes made of elastomeric yarn and two subsequent rows of stitches made of non-elastomeric yarn, as well as the foot part of the The stocking is preferably knitted in the same y-shape.

In detail, the first of the two mentioned intermediate Rows of casings made of non-elastomeric yarn

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preferably spaced plague loops on and intermediate stretched yarn parts, while the second of said intermediate rows of stitches consists of • spaced apart pang stitches and knitted stitches, said catch stitches comprising the plague loops of said first intermediate row of stitches and the knitted stitches of said second intermediate row of stitches together are formed with the stated overall _Ä stretched yarn parts to support mesh as

this is generally the case with ladder-free Eylon hosiery is known.

Preferably the pang stitches alternate with the knitted stitches of the first of the two rows in between, and those wales of the fabric that are in the second intervening course a group of spaced apart elastomeric yarns and intervening non-elastomeric yarns pangmesh P contain, preferably have right stitches, and vice versa in the next following group.

Therefore, the elastomeric yarns are free to stretch substantially in the usual manner during the tethering effect exercised primarily by the intermediate non-elastomeric yarns, which is preferably consist of heavily twisted yarns, in which palle the

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adjacent rows of stitches preferably in different Directions are twisted, so that the twisting effect one is canceled out by that of the other.

Alternatively, the non-elastomeric yarns can be crimped nylon yarns be, including creped, wrongly twisted, knitted and knitted again, two-component nenten yerbund yarns and other similar nylon yarns should be understood according to their physical Design are stretchable to a higher degree than simple nylon yarns and therefore meet the requirements of hosiery correspond more with Stutζ effect. So much for nylon crimped yarns can be used to produce all courses of stitches obtained from these non-elastomeric yarns identical yarns are used.

If necessary, more than two rows of stitches can be made non-elastomeric yarns may be disposed between spaced-apart rows of pockets of the elastomeric yarns, while on the other hand, two or more courses of elastomeric yarns between these spaced apart Rows of non-elastomeric yarns can be arranged in which the above-mentioned retaining stitches are formed.

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For example, the knitted or crocheted fabric can consist of two consecutive courses of elastomeric yarns have, which are connected by right stitches are followed by two rows of stitches made of non-elastomeric yarns that pass through the aforementioned retaining stitches are connected to each other, and finally two more successive rows of elastomeric stitches Yarn, and so on. In this way, such a fabric is suitable for manufacture on a machine with four or eight-fold feed.

According to another embodiment of the invention, there are in each of the recurring groups mentioned of courses six consecutive courses are provided, i.e. a first course made of elastomeric Yarn, a second row of stitches made from non-elastomeric yarn and a third course of elastomeric yarn, these three courses with knitted stitches together are knitted, furthermore three consecutive courses of non-elastomeric yarns behind the said third row of maedhen, and at least two of the named three courses of non-elastomeric yarns are as described above by spaced retaining stitches connected with each other. Such a fabric is therefore suitable for production on a machine with a six-fold Supply.

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Preferably, however, contains the knitted or crocheted Tissue only individual rows of T. 'ase eyes at a distance from one another made of elastomeric yarn and two consecutive ones in between !. 'rows of ashes made of nylon yarns connected to each other are entangled by holding stitches, for which purpose it is useful is made on a circular knitting machine with three or six feeds.

The invention further comprises a method for producing _Λ

at least the "leg length of a ladder-free seamless stocking with compression effect, which consists in that alternating closed round stitches with knitted stitches made of elastomeric yarn and at least two successive round stitches made of non-elastic yarn are created so that the first of the non-elastomeric round stitches with spaced apart stitches in between are entangled, that furthermore the second of the non-elastomeric! .laschenreihen n.it spaced tuck stitches and intervening (

right-hand stitches are knitted, so that the second non-elastomeric rows of stitches with larger loop size than the previous I. row of stitches made of non-elastons-em yarn, which are placed between the Festcaschen these Ilaschenreihen lie, considerably stretched be, and that eventually after each one or more

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Groups of courses made of elastomeric and non-elastomeric After you have knitted the yarn, the tuck stitches formed in the following groups are laid out in other wales than those that contain the tuck stitches in the previous groups of courses.

The invention will now be further described with reference to the accompanying drawings. In these is

Fig. 1 is a greatly enlarged view of the front or front of the preferred leg length fabric of a ladder-free seamless stocking with compression effect according to the invention, and

Fig. 2 is an exploded schematic elevational view of the needle assembly for manufacture circular knitting machine with a triple feed that is suitable for the stocking.

In Fig. 1 successive wales of the knitted Tissue denoted by W1 to W 4, while consecutive Stitch courses with 01 to 010 are designated.

The tissue shown contains mutually spaced apart closed rows of round stitches 01, C4, 07 and 010, which consist of a suitable elastomeric yarn 12 are made so - '/ ie

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two closed rows of round stitches, such as C2 and 03, made of non-elastomeric yarns 14 and 16, each between the "adjacent pairs of courses of elastomeric Yarn 12 lie. The succession or grouping of three consecutive ones formed from yarns 12, 14 and 16 The rows of stitches are repeated in this way ■ through the entire fabric.

The elastomeric yarn 12 can be made of any suitable material and any suitable for manufacture of compressive hosiery are of appropriate strength. A preferred yarn is that with Hylon woven "Lycra" spandex with a 40 denier core and a covering with two 20 denier nylon yarns.

The yarns 14 and 16 are preferably both heavily twisted Hylon yarns? they are then in opposite directions twisted so that one, e.g., yarn 14, is a yarn with an "S" twist, while yarn 16 has one "Z" twist is so that the yarns cancel each other out of the twisting effect they create in the fabric.

-Each mesh, such as the course C1 made of elastomeric Yarn 12 consists only of knitted stitches, while each row of stitches 14 is made of nylon yarn by holding loops 14a, which alternate in successive wales

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are laid out, and stretched through, intermediate ones Yarn parts I4 "b is formed.

Finally, each course of ITylon yarn becomes 16 knitted with spaced apart long loops 1 "6a, which together with the retaining loops 14a of the preceding Mesh row "form 14 catch loops, which with" Rechtsmasclien 16b alternate. The yarn 16 is also knitted with enlarged loops, as is the case during production. Mesh-free hosiery is generally known, so that the retaining loops 14a of the previous lasche row are also enlarged and thereby the intermediate stretched yarn parts 14b are formed by the Fetching of yarn from the previously in the dazv / ischen Wales of this row of stitches formed loops.

The yarn 16 will file in this way with the stretched ones 14b in alternating thread loops I2a of the foregoing elastomeric yarn 12 concatenated, wherein The retaining stitches 18 are formed from the knitted stitches 16b, which are similar in their design to the holding stitches produced in ladder-free hosiery.

Because of the elasticity of the elastomeric yarn 12 coated under tension and the relatively low elongation

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availability of the Hylon yarns 14 and 15 of the following resp. previous llaschenreihen the yarn 12 runs in the substantially in a straight line between the adjacent pairs of supports formed by the nylon yarns, the in Fig. 1 The characteristic shape shown is created when the tissue is stretched to a certain extent = the elastomeric yarns 12 impressed shape distorted at the same time also the pike stitches 16b of the yarns 16, like this in FIG

Drawing is shown i

Those! Rebukes who in a course of yarn 16 the pang meshes 16a form right meshes 16b in FIG next row of stitches of the same yarn and vice versa, so that tuck stitches are formed in the wales "72 and W4 of the I-loop row G3 of yarn 16 and in the double-knit wales TM and 1'3 of the next row of ash Cc this yarn. In this way, each wale contains a retaining loop 18 in every sixth course, and this Retaining stitches are arranged in the putty between those rows of straps, the ones in the two lying on either side Cash sticks have holding stitches.

Although the retaining stitches 18 formed in the Fyloii yarns 14 and 16 in the S ₉ B ₀ in the courses 01 and C4 made of elastomer! » Oarn formed Naäelsohlingen 12a can be kept _s the L pocket rows Ci xmA OA doeli essentially

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Stretch freely in the usual way, while the twisted nylon yarns H and 16 because of their counter-twisting Prevent distortion of the tissue and at the same time help give the stocking the desired compression effect granted.

Crimped nylon yarns that are more stretchy than smooth Nylon yarns can be used in place of twisted yarns 14 and with similar success. The invention concludes Also, the use of smooth nylon yarns is not an option, although these are less suitable because then the elasticity is increased of the stocking obtained is reduced compared to stockings which are made with twisted or crimped yarns be used.

Stockings with the fabric shown in Fig. 1 can be very easy to produce on circular knitting machines with a triple feed, e.g. on the "Samo 3 Feed" machine, or on a six-feed machine.

Thus, FIG. 2 shows an exploded schematic representation of the needles of a circular knitting machine with three feeders. driving positions, which are marked with I, II and III. From this figure it can be seen that all threads are raised to knitting height before the feed position I ₅ at which the elastomeric yarn 12 is continuously fed into the needles «,

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which is then taken down by the relevant countersink so that all needles form knitted stitches and the loops of the previous courses of yarn 16 be removed. When moving on towards infeed position II, the needles are first raised to catch height, whereupon they are all raised again to knitting height, so that the loops of yarn 12 on all needles under their respective Tongues through =

The heavily twisted nylon thread is in feed position II Η, e.g. an "S" thread, continuously on all needles supplied, which is then followed by the corresponding countersink. below what they point to while moving on raised to the catch height 20 against the feed position III whereupon every second needle, e.g. the even-numbered needles, is raised to knitting height, in which case the odd-numbered needles stay at catch height.

In this way, the loops of the yarn 12 pass under the tongues of the even-numbered needles when these needles are raised up to knitting height, while the even-numbered needles the yarn 12 still on their Hold back tongues when all needles are twisted nylon "Z ^" yarn 16 in the feed position III. The needles are then lowered into this feed position by the countersink, but to a greater depth than before, so that of all the needles in this yarn 16 longer loops

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are drawn than in the previous rows 12 and 14, as indicated by the dash-dotted line 22, which indicates the placement level of the boards.

In this way, the holding loops 14a, which are on the Tongues of the odd-numbered needles had been retained, enlarged, along with the loops of the new yarn 16, and this enlargement is achieved by taking up yarn from the loops of yarn 14, the removed from the straight needles. These detached loops in between are therefore stretched like in Pig. 1 is indicated «Thus, tuck meshes are formed by the odd-numbered needles while knitted stitches are formed from the even-numbered needles. As the cylinder continues to rotate, all needles open The knitting height is raised and the formation of a group of three rows of stitches is complete »

During the next cylinder rotation, more Stitch courses formed from right stitches in the yarns 12 and 14, which are fed in the feed positions I and II, respectively but when approaching the feed position III, the odd-numbered needles that are during the previous rotation had formed tuck loops, this time through the needle selector at knitting height raised while the even-numbered needles remain at catch height to pick up the fresh yarn 16.

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The longer loops that are in the courses formed from the yarn 16 are required, are obtained by the fact that the yarn over the raised Rabbits or the backs of all boards or every other board is drawn, by means of the corresponding countersink. All three methods are well known in the art.

The knitting process described above is used continuously repeated during the knitting of the leg length of the stocking, preferably also during the knitting of the Foot part ο

As indicated above, the knitting cycle can be varied, e.g., by knitting two or more Rows of flaps made of elastomeric yarn 3ris & between successive ones Rows of holding stitches, and also through the insertion of more than two rows of non-elastomers Yarns between the spaced-apart rows of elastomeric yarns. Of course In all these cases, holding stitches are put on at equal intervals along each knickstick "

It has been found that those described in US Pat Wise knitted hosiery with ICompression effect the "bsi dignified type of hosiery" see / disregard dualities

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to a sufficient extent and that they also have the advantage of being free of leaks, these types of hosiery are also more see-through than those made only of elastomeric yarns Compression hosiery.

Patent claims:

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Claims (1)

1 & 35820 Claims 5 1. Ladder-free seamless stocking with compression effect, characterized in that at least the leg length is spaced apart from one another Has dog stitches of elastomeric yarn and at least two consecutive intervening closed rows of round stitches made of non-elastomeric yarn, those between the rows of stitches spaced from one another are arranged from elastomeric yarn, and that spaced apart retaining loops the two intermediate Connect the rows of stitches with each other, the holding stitches being spaced apart over the individual wales 2. Ladder-free seamless stocking with compression effect, in which at least the leg length consists of successive similar groups of courses, characterized in that each group has at least one closed circular row of elastomeric yarn, which consists of knitted stitches, and then at least two consecutive closed circular rows of non-elastomeric Yarns, the first of these adjoining rows of stitches having spaced apart I ¹ est loops as well as stretched yarn parts lying in between and the second of them 109819/0246 following rows of stitches spaced apart from each other as well as intervening pike stitches, furthermore, the knitted stitches with the stretched yarn parts of the first course made of non-elastomeric material Yarn to be deformed to holding stitches, and finally the holding stitches with spacings over the individual Wales are distributed. 3 · Ladder-free seamless stocking with eompression— Effect according to claim 2, characterized in that that each of the groups of courses only consists of the course of elastomeric yarn and the two consecutive courses Courses made of non-elastomeric yarns. 4. ladder-free seamless stocking with compression effect according to claim 2 or 3 »characterized in that the retaining stitches in alternating Wales are arranged in each of the groups of courses and in the same wales in alternating fashion Groups of these courses. ο ladder-free seamless stocking with compression effect according to claim 1, 2, 3 or 4, characterized by g e k e η η, that the non-elastomeric yarns that form the two successive courses are highly twisted, are nylon yarns twisted in opposite directions. 109819/0246 ζ · 6. Ladder-free seamless stocking with compression effect according to claim 1, 2, 3 or 4, characterized in that the non-elastomeric yarns are crimped Nylon yarns are. 7. Loose-fringed seamless stocking with eompression effect according to any one of the preceding claims, characterized in that the foot part is also in is knitted the same way as the leg length * 8. Method of making at least the leg length of a ladder-free seamless stocking with eompression effect, characterized in that alternately Closed rows of round stitches with knitted stitches made of elastoTBrem yarn and at least two consecutive stitches Round stitches are made of non-elastomeric yarn so that the first of the "two pure meshes made of non-elastomeric:. Twine ii.it -plough spaced-apart plague and it is entangled in a straight stitch, that also the second of the courses of stitches made of non-elastomeric yarn with tuck stitches and spaced apart intervening knitted right stitches, that in each case the second row of stitches is made of non-elastomeric one Yarn is knitted with a larger loop width than the previous! Easelienreilie from nielitelastosieres yarn, which between the ÜTest pockets of this row of pockets lie, noticeably stretched ^ srdeiij \ mo. fei? finally, if each one or se ^ r 0η · /: "; -> 5Γί of ■« lä.s-ohenreilieii sus elascoseren or -1 0 9 8 1 9/0246. BATH meren yarns are formed in the next group formed teasers in other wales are considered to be in those who contain the "catchers" in the preceding group of Masehenre.ihen. 9. The method according to claim 8, characterized in ei chnet, that the leg length of the stocking has successive similar groups of three closed round mesh rows, each of these groups having a single, closed, round stitch course of elastomeric yarn adjoined by two Closed rows of round stitches made from non-elastomeric yarns connect" 1C. The method of claim 8 or 9, characterized gekennz calibration net that the Fangmasehen alternate with the plain stitches on the second of the two I.'aschenreihen from non-elastomeric yarn and rows that after Eildung each group of T ^T ash in the second of the Ilasehenreihe two rows of stitches made of non-elastomeric yarn in the next h group can be created in those wales that were formed in the corresponding row of stitches in the previous group of right-hand meshes, and vice versa. ο A method according to claim 7 or 8, characterized in that _f and the foot part of the stocking is manufactured in the same vYeise as the leg length. 12c method according to claim 9, characterized in that that the stocking with a circular knitting machine with triple ZuuLr is knitted. 109819/0246 SAO ORIGINAL