US2515720A

US2515720A - Knitted fabric

Info

Publication number: US2515720A
Application number: US756694A
Authority: US
Inventors: Levin Nathan
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-06-24
Filing date: 1947-06-24
Publication date: 1950-07-18
Anticipated expiration: 1967-07-18
Also published as: GB650405A

Description

N. LEVIN KNITTED FABRIC July 18, 1950 2 Sheets-Sheet 1 Filed June 24, 1947 INVENTOR.

N. LEVIN 2,515,720

KNITTED FABRIC July 18, 1950 2 Sheets-Sheet 2 Filed June 24, 1947 INVENTOR Patented July 18, 1950 UNITED STATES PATENT OFFICE KNITTED FABRIC Nathan Levin, Trenton, N. .l.

Application June 24, 1947, Serial No. 756,694

8 Claims. .(Cl. 66-201) This invention is concerned with a new knitted fabric formed of a weft body yarn and of individual Walewise extending pattern wrap yarns selectively .interknit with and plated on the body yarn stitches to form a design, and with a new method of operating an independent needle knitting machine to make the said new fabric.

It is an object of this new invention to provide a new rib knitted fabric, preferably but not necessarily tubular, formed of a weft body yarn and of individual walewise extending pattern wrap yarns which are selectively plated on the body yarn stitches and which form loops of wrap yarn only interknit with said plated loops.

It is an object of this invention to provide a new method of operating an independent needle rib knitting machine, preferably but not necessarily circular, in which the needles and the plating wrap fingers are operated to knit rib courses of body yarn stitches selectively plated with individual walewise extending wrap yarns and in which the needles and the plating wrap fingers are operated to knit stitches of wrap yarn only interknit with the said plated stitches.

Other objects and advantages of the invention will be apparent from the following description of the invention takenin connection with the attached drawings in which:

Figure 1 illustrates a stocking embodying the new fabric in the top thereof,

Figure 2 illustrates the stitches in detail,

Figure 3 illustrates a diagrammatic view of the method of operating the needles and the fingers,

Figure 4 illustrates the position of the needles and fingers on line 4-4 of Figure 3, and

Figure 5 illustrates the position of the needles and fingers on line 5-5 of Figure 3.

As shown in Figure 1 there is a stockingv 6 having the usual leg and foot and a top I decorated with the diamond shaped patterns 8. Obviously the patterned area may be of any selected size or shape within the limits of the patterning scope of the machine making the fabric. Preferably the top I is of rib fabric and is of seamless tubular construction but the invention is not so limited, as the novel stitch construction, being within a Wale, is applicable to plain weft jersey fabric as well and obviously is also applicable to flat knit fabric whether of rib or of jersey construction. It is preferable to use rib fabric as the intervening rib wales tend to overcome the lengthening of the plain wales where the double wrap yarns stitches, one plated and one of wrap yarn only, are selectively incorporated within a single course of the rib fabric, as will be explained.

,In Figure 2 an enlarged diagrammatic view of the stitches of a portion of the fabric of the top 1, including the design 8, is shown. Illustrated is a rib fabric composed of the plain outside wales 9 and I0 and the inside rib wales II and I2 all formed of the weft body yarn I3. The rib wales I I and I2 contain stitches of the weft body yarn I3 exclusively whereas the plain wales 9 and It contain stitches of the weft body yarn I3 and successive chain stitches of the walewise extending patterning wrap yarns I4 and I5, respectively individual to the wales 9 and Ill. The section of fabric shown in Figure 2 has five complete courses IS, IT, I8, I9 and of the weft body yarn I3, each four wales in width. In the wale 9, in course It thereof, a plated stitch ZI of the wrap yarn I4 0n the body yarn I3 is formed, this plated stitch V 2| being the beginning of the patterning in this wale in Figure 2 and is drawn through a stitch of body yarn in the previous course. Also formed in the wale 9 and in the course It is the stitch 22 of wrap yarn I I only, which is drawn through the plated stitch 2 I, thus forming two stitches in wale 9, one plated with wrap yarn hi on body yarn I 3 and. one of Wrap yarn I4 only, in the single course I6 in which there are single stitches of Weft body yarn I3 only in the wales II], II and I2. In the wale III, in the course I6 thereof, it will be seen that the wrap yarn I5 is not interknitted but floats rearwardly thereof, the patterning being absent from the course I6 and starting in the course I'I.

Referring now to wale 9 again, it will be seen that the double wrap stitch structure, plated stitch H and wrap stitch 22, of course It is repeated in the courses If, I8 and I9 and that in the course 20 there are no wrap stitches, the wrap yarn I4 floating rearwardly of the body yarn stitch therein. The wrap yarn It continues to float rearwardly of the courses until it is selectively knitted into the wale 9 again at the point where patterning is desired, as is well understood in the art. Thus in the section of fabric shown in Figure 2, in the wale 9 thereof, the patterning extends for four courses and in these four courses of fabric the wrap yarn has been formed into eight stitches, four of which are plated on the body yarn and four of which are of wrap yarn only, with a plated wrap stitch and a stitch of Wrap yarn only drawn therethrough in each course.

In the wale II] the patterning is in the courses I! and I8 and in each of these courses there are the plated stitches 2| of the wrap yarn I5 on the body yarn I3 and the stitches 22 of the wrap yarn IE only. In the courses preceding and succeeding the courses I! and It the wrap yarn I floats rearwardly of the fabric courses until it is again selectively knitted into the wale H] at points where patterning is desired.

It will be seen therefore that in those plain wales where the wrap yarns are selectively knitted there are twice the number of stitches per course than are knitted in each of the rib wales or in the non-patterned plain wales, and that for a given length of fabric the overall length of each wale is substantially the same, the extra stitches of the wrap yarns being forced to .open.

wider than the stitches of the body yarn and being forced toward each other walewise due to the lesser number of stitches in the intervening rib wales. Thus the plated stitches and the stitches of wrap yarn only interknit therewith in a single course are forced into a raised or embroidered relation to the body fabric and provide an upstanding pattern which is more effective than a pattern composed only of wrap plated stitches or a pattern composed only of stitches of wrap yarn only. When the fabric is stretched coursewise the double wrap stitch structure of this invention retains more of the complete pattern effect than does either of the other two patterning stitch structures immediately above described.

Referring now to Figures 3, 4 and 5, the preferred method of manipulating the needles and the fingers of an independent circular rib knitting machine to form the fabric will now be described. The relation of the cylinder needles 2,3 and the dial needles 24 is the same as in the usual circular independent needle rib machines. Fingers 25 equal in number to the cylinder needles 23. and individually associated therewith each carry a wrap yarn, such as I4 and I5, which yarns are likewise individually associated with a cylinder needle. These fingers 25 are disposed within slots in a finger cylinder in the relation to the needles 23 and 2 1 as shown inFigures 3 and 4. The fingers 25 are moved about their pivot points from a position of rest, which is induced by the spring 26, to the wrapping position of Figures 4 and 5, by means of the two

finger operating cams

21 and 28, the return movement being made by the spring 26. The action of the finger ends adjacent the cylinder needle hooks to wrap a yarn around the same is well known in the art.

In Figure 3 there is a diagrammatic representation of the needles of a circular knitting machine. The cylinder needles 23 when they follow the dotted line path 29 throughout are raised at feed A, which is the main knitting station, by the usual means to the level 3|, shown in Figure 4, where the old stitches of the body yarn I 3 are knitted off and new stitches formed of the body yarn as the needles .23 take the same and are drawn by the stitch cam 30 down to the stitch forming level beneath the said cam. At this point, see Figure 4, the dial needles 24 are out and take the body yarn I3 to form rib stitches thereof in the usual way.

If it is desired to wrap selected cylinder needles 23 with wrap yarn at feed A, then the selecting means, here shown as an inclined design wheel 32, although any type of needle raising means may be used, raises selected needles such as 33 from the dotted line needle path 29 to the dot and dash line needle path 34 and thus the selected needles 33 reach the knitting level 3! at an earlier point than do-the non-selected needles.

It a At this earlier point the fingers 25 are all operated by the cam 21 and accordingly the raised selected needles are each wrapped with its associated wrap yarn by means of the finger wrapping action. The selected needles continue on and take the body yarn as described and following the path 29 beneath the stitch cam 30 knit plated stitches of wrap yarn on body yarn at thesame time that the non-selected cylinder needles and the dial needles knit only the body yarn.

At feed B, which is an auxiliary knitting station, the dial needles are withdrawn to the position of Figure 5 and do not knit. At this feed nobody yarn is fed and knitting takes place only on the needles which were selected at feed A, this knitting being done with wrap yarn only. As the cylinder needles approach feed B along the needle path 29 after havin passed under stitch cam 30, a second needle selection is made by an inclined design wheel 35, which is similar to the means employed at feed A, to raise to the level 3| at feed B, only the same needles 33 which were raised at feed A where they knitted plated wrap stitches thereon. The selected raised needles 33 now follow the dot dash line needle path 34 at feed B and as they pass beneath the finger cam 28 the latter actuates all of the fingers 25, to the position of Figure 5, to again wrap the same yarn around the same selected needles 33. The selected needles continue on and join the needle path 29 to pass beneath the stitch cam 36 thus knitting stitches of the wrap yarn only through the plated wrap stitches formed on these selected needles at the feed A. The stitch cam 36 is the normal cam on the machine used for clearing all the cylinder needles in making the welt. It will be obvious that at feed B the dial needles being in withdrawn position do not knit and that the non-selected cylinder needles which follow the dotted line needle path 29 likewise do not knit as the path 29 at feed B does not go high enough to clear the old loops below the needle latches, only the selected needles being raised by the design wheel 35 to a position to clear their plated loops below their latches and to take wrap yarns, prior to the knitting of the same under the stitch drawing cam 36.

The above described action continues at feeds A and B to make the double wrap rib patterned fabric previously described. Where no pattern is desired there is no needle wrapping action at feeds A and B and only the usual rib'knitting takes place at feed A and no knittin at alt takes place at feed B.

It will be noted in the fabric that the first wrap stitch is the plated stitch 2| through which the stitch of wrap yarn 22 is drawn. If however in starting a pattern a wrap stitch is formed at feed B on a selected needle before that needle forms a plated stitch at feed A that then the first wrap stitch in a patterned wale will be of wrap yarn only followed by a plated stitch which in turn will be followed by a stitch of wrap yarn only. It is immaterial as to which type of wrap stitch is the first in the series within each wale of patterned wrap stitches.

It is within the scope of the present invention to have more than the two wrap stitches per course as the patterning stitch structure. This can be done by duplicating the feed B so that there are at least two feeds B to a single feed A in which event each feed B will form a stitch of the wrap yarn only on the selected needle which forms a plated stitch at feed A, so that within each course there will be at least three wrap stitches, one plated and two of wrap yarn only, The order of the feeds may be such as to knit, in each course, first the plated stitch followed by the two stitches of wrap yarn only or to knit first a stitch of wrap yarn only followed in turn by a plated stitch and then by another stitch of wrap yarn only. Accordingly the number of wrap stitches per course of fabric will depend upon how many feeds similar to B are placed on the machine to each regular feed Athereon.

This invention is an improvement over the fabric and the method of making the same shown in United States Patents No. 1,907,185 and No. 1,936,024.

I claim:

1. Seamless tubular fabric having courses and wales knit of body yarn stitches and ornamented at selected places with successive chain stitches knit of walewise extending wrap yarns which float rearwardly of the fabric between said places, in which the wrap yarns are knitted so that alternate ones of said successive wrap yarn chain stitches are plated on walewise successive body yarn stitches for successive fabric courses and so that the intervening ones of said successive wrap yarn chain stitches extend between said successive fabric courses as extra stitches of wrap yarn only interlooped walewise with said plated stitches.

2. Seamless tubular fabric having courses and wales knit of body yarn stitches and ornamented at selected places with successive chain stitches knit of walewise extending wrap yarns which float rearwardly of the fabricbetween said places, in which the wrap yarns are knitted so that spaced ones of said successive wrap yarn chain stitches are plated on walewise successive body yarn stitches for successive fabric courses and so that the intervening ones of said successive wrap yarn chain stitches extend between said successive fabric courses as extra stitches of wrap yarn only interlooped walewise with said plated stitches.

3. Seamless tubular fabric having courses and s.

wales knit of body yarn stitches and ornamented at selected places with successive chain stitches knit of walewise extending wrap yarns which float rearwardly of the fabric between said places, in which the wrap yarns are knitted so that spaced ones of said successive wrap yarn chain stitches are knitted with walewise successive body yarn stitches for successive fabric courses and so that the intervening ones of said successive wrap yarn chain stitches extend between said successive fabric courses as extra stitches of wrap yarn only interlooped walewise with said spaced stitches.

4. Seamless tubular fabric having courses and wales knit of body yarn stitches and ornamented at selected places with successive chain stitches knit of walewise extending wrap yarns which float rearwardly of the fabric between said places, in Which the wrap yarns are knitted so that spaced ones of the successive chain stitches made from one of said wrap yarns are plated in a wale on successive body yarn stitches for successive fabric courses and so that the intervening ones of said last named successive chain stitches extend in said wale between said successive fabric courses as extra stitches of wrap yarn only interlooped walewise with said plated stitches.

5. Seamless tubular fabric having courses and wales knit of body yarn stitches and ornamented at selected places with chain stitches knit of walewise extending wrap yarns which float rearwardly of the fabric between said places, in which the wrap yarns are knitted so that one of said wrap yarn chain stitches is plated in a wale on a body yarn stitch of a fabric course and so that at least one other of said wrap yarn chain stitches extends in said wale between said fabric course and a successive fabric course as an extra stitch of wrap yarn only interlooped walewise with said plated stitch and with a body yarn stitch of said wale in said successive course.

6. Seamless tubular fabric having courses and wales knit of body yarn stitches and ornamented at selected places of single wales with two types of ornamental wrap yarn stitches made with chain stitches knit of walewise extending wrap yarns which float rearwardly of the fabric between said places, in which the wrap yarns are knitted so that of the chain stitches made from one of said wrap yarns at least one chain stitch is plated on at least one body stitch in a wale to provide at least one ornamental stitch of wrap yarn on body yarn in said wale and so that at least one other chain stitch of said last named chain stitches extends in said wale between at least one pair of successive body yarn stitches as an extra stitch interlooped walewise with each of said pair of successive body yarn stitches to also provide at least one ornamental extra stitch of wrap yarn only in said Wale.

7. Seamless tubular rib fabric having courses of inside rib and outside plain wales knit of body yarn stitches and ornamented at selected places with successive chain stitches knit of walewise extending wrap yarns which float rearwardly of the fabric between said places, in which the wrap yarns are knitted so that spaced ones of said successive wrap yarn chain stitches are plated on walewise successive plain body yarn stitches for successive fabric courses and so that the intervening ones of said successive wrap yarn chain stitches extend between said successive fabric courses as extra stitches of wrap yarn only interlooped walewise with said plated stitches.

' 8. A stocking provided with a top of tubular seamless fabric having courses and wales knit of body yarn stitches and ornamented at selected places with successive chain stitches knit of walewise extending wrap yarns which float rearwardly of the fabric between said places, in which the wrap yarns are knitted so that spaced ones of said successive wrap yarn chain stitches are plated on walewise successive body yarn stitches for successive fabric courses and so that the intervening ones of said successive wrap yarn chain stitches extend between said successive fabric courses as extra stitches of wrap yarn only interlooped walewise with said plated stitches.

NATHAN LEVIN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Morton Aug. 29, 1933