US2396525A - Warp knitted pile rug - Google Patents

Description

2 Sheets-sk 1 INVENTOR. Ml LTON Ne N March 12, 1946. M. NEWMAN WARP KNITTED PILE RUG Filed Oct. 10, 19

Marsh 32, 1946.

M. NEWMAN WARP KNITTED PILE RUG Filed Oct. 10, 1944 2 Sheets-Sheet 2 INVENTOR.

' MILTON NEWMAN BY A ia/W Patented Mar. 12, 1946 UNITED STATES PATENT OFFICE WARP KNITTED PILE RUG Milton Newman, Philadelphia, Pa. Application October 10, 1944 Serial No. 557,963

4 Claims.

The present invention relates generally to a warp knit pile fabric. While the present invention may be applied to a large variety of fabrics, it is more particularly adapted for use in the manufacture of rugs, mats and if desired, may be employed in the manufacture of bedspreads or any other like articles. The pile which is produced in the present fabric may be in the form of loops so that the fabric produced thereby may be said to imitate terry cloth or the loops may be slurred or cut,-in which case the fabric produced may be said to imitate plush or similar materials or may generally be imitative of rug fabrics produced by other weaving and knitting processes.

In the manufacture of the present fabric, a series of separate warp extending parallel lines formed, each knit of a sapto each needle of the knittogether a plurality of weft yarns, each of which extend back and forth in nesting sinuous paths coursewise across the chain stitches of the finished fabric, the said weft yarns being incorporated unknit in the chain stitches and being locked in the fabric thereby. Certain of the weft yarns at the point of reversal of their back and forth path in the fabric are formed into pile loops which extend outwardly from the fabric and form the face thereof, while the other weft yarns, which are not so formed into pile loops, serve to keep the fabric from stretching and from becoming loose or sleazy when the finished fabric is washed or otherwise roughtly pulled or handled.

It is an object of this arate yarn individual ting machine. to hold invention to produce a warp knit fabric having a solid foundation or backing therefor lying substantially in a single plane and having pile-like loops extending outwardly therefrom on one face of the fabric, all of the weft yarns forming the said oundation pile loops, naintain said foundation or backing in the form if a solid compact structure.

The construction of the finished fabric, as vell as the method of its manufacture, will be more clearly understood from thefollowing decription of the process as illustrated by the acompanying drawings.

In the drawings:

Figure 1 illustrates the front face of the warp nit fabric in enlarged diagrammatic detail mowing the pile loops;

. porating therein in Figure 2 illustrates the rear face of the fabric shown in Figure 1;

Figure 3 is a sectional view of the fabric taken on lines 3-3 of Figure 1;

Figure 4 is an enlarged diagrammatic detail view of the path of travel of two adjacent weft threads in the finished fabric; and

Figure 5 is a diagrammatic line drawing of the paths of travel of the weft yarn during the knitting operation.

The fabric of the present invention is an improvement over the fabric disclosed in the United States patent to Milton Newman, No. 2,229,469, Referring more particularly to Figure 1, which illustrates a section of the fabric in enlarged diagrammatic detail, it will be observed that this fabric of my invention includes a series of separate parallel lines of chain stitches numbered, for example, 5 to if, inclusive, extending warp-wise a plurality of weft yarns i8, i8, i8 etc., respectively arranged alternately with respect to a plurality of weft yarns I9, I9 i9, etc., the total number of weft yarns being equal to the number of lines of chain stitches, there each needle of the knitting machine. The section of fabric here illustrated is shown as hav- Each of the weft yarns extends in a back and forth sinuous path across four adjacent lines of the warp chain stitches. For example, referring to the lines of the chain stitches 5, 6, 1 and 8, as shown in Figure/i, it will be observed that the weft yarn i8 extends back. and forth across these adjacent chain l but in theopposite direction.

dition.

of travel of the adjacent weft yarn |8 while each weft yarn l8, in any given course, extends across a pair of adjacent chain stitches, as, for example, chain stitches and 6 in course 2|, each weft yarn l9 correspondingly extends,

in same course, across a pair of adjacent stitches which are laterally offset to the extent of one needle in th given course, the yarn l9 for example, extending across the chain stitches 8 and 1 in the course 2| Accordingly, it will be noted that for the contiguous pair of weft yarns (e. g. It and I9) they are each commonly incorporated in or embraced by a single chain stitch of the warp line 6 each of the courses 2|, 22; 25, 28; 29, 30, et seq.;

at the same time that said yarns are s commonly embraced by a single chain stitch of the warp line 8 in each of the courses 20; 23, 24; 21, 2!, et seq. Thus, it can be said that in each course Of knitting, each weft yarn (e. g. yarn ll) of the fabric extends in succession across a successive pair of chain loops, with the adjacent or contiguous weft yarns (e. g. yarn l8) being commonly embraced within one of said pair of chain loops.

At the point where each weft yarn of the group I8, etc., reverses its path of travel, as to the left of chain stitch line 5 and to the right of chain stitch line 8 (see particularly Figure 4), the yarn travels in a short tight turn, as for example, in chain stitch line 5, from the stitch in course 2| to the next stitch in course 22. However, at the point where each weft yarn of the group I0, etc., reverses its path of travel, as to the left of chain stitch line 6 and to the right. of chain stitch line 9, the yarn is drawn into pilelike loops, as indicated 'by the numerals 3| and 32, by the knitting machine before resumin path of travel in the opposite direction.

most clearly shown in Figure 4 wherein, for example, the weft yarn H, in reversing its direction atthe chain stitch line 6 in course 2|, is formed into loop 3| before returning to the next stitch in course 22. In a like manner, in chain stitch line 8, the weft yarn I9 is drawn the pile loop 32 after leaving the stitch in course 23 and before returning to the next stitch in It will be noted that every other weft yarn, both weftwise and warpwise of the course 2i.

fabric, forms loops which extend outwardly from the upper face of the fabric. By providing the weft yarns I! with a certain degree of twist, as is and 32 will twist together and tend to project outwardly from the desirable, their free loops 3 fabric as twisted pile loops.

Since each weft yarn I9 is incorporated unknit in the fabric, it will be seen that if the finished fabric could be stretched in a weftwise direction,

ashins, that then the 75 of their yarn travel to prevent displacement asin lOUKh handling or in w stitche in one direction, while in the adjacent two courses of knitting, the weft yarn It extends across the same four lines of chain stitches.

This reversal direction of the path of travel ofweft yarn It takes place after each two courses of knitting. It will be noted that the chain stitches are kni around the weft threads |8 and I9 and incorporate the latter in the fabric in an unknit conout and would becom weft yarns of the base fabric to the extent that the fabric would be stretche To prevent any such stretching of the fabric. in order to maintain the loops 3| and 82 in their fully extended lengths at all times, the weft yarns I! have been incorp rated in the fabric in such a way that at the point of reversal of their yam path, the yarn is form into the short bishts previously described. Thus, if the fabric is subfeet to stretchin of any kind in a weftwise direction, the force of the stretching will be exerted upon the weft yarns it which are laid, as described, so as not to be able to be moved weftwise relative to each set of four chain stitches and consequently the fabric and the loops thereof will resist any stretchin The series of verticaily extending warp knit chain stitches will, of course, resist stretching of the fabric in a warp- .wise direction.

What is claimed as new and useful is:

l. A warp knitted fabric comprising a series of spaced chain stitches each knit of a separate warp thread and a plurality of weft threads equal corporated unknit therein, each of the weft yarns extending across the said chain stitches in like paths, each weft yarn respectively extending in a. given course across a pair of adjacent chain stitches with the contiguous weft yarn embraced by only one of said pair of chain stitches, the weft yarns extending in one direction for two consecutive courses of knitting and reversing their travel and extending in the opposite direction for the next two consecutive courses of knittin-g, alternate weft yarns at the point of reversal of their yarn travel between the second and third courses of knitting being formed into loops extending from the face of the fabric and the intervening weft yarns at the point of reversal of their yarn travel being interlocked with the chain stitches between the second and third courses thereof. I

2. A warp knitted fabric comprising a series of spaced chain stitches each knit of a separate warp thread and a plurality of weft yarns incorporated unknit in said chain stitches, said weft yarns extending back and forth across a plurality of said chain stitches throughout said fabric, alternate weft threads at each point of reversal being formed into loops extending outwardly from the face of the fabric, the intervening weft yarns being incorporated in the chain stitches to prevent movement thereof relative to the chain stitches in a weftwise direction.

3. A warp knitted fabric comprising a series of I spaced chain stitches each knit of a separate warp thread and a plurality of weft yarns equal in number of said series of chain stitches and incorporated unknit therein, each of the weft yarns extending sinuously across the said chain stitches in parallel paths, the reversely directed portions of each weft yarn respectively extending across a total of at least four chain stitches in two adjoining courses, each weft yarn in each course being embraced by two chain stitches in that course with the weft yarn immediately adjacent thereto embraced in a single chain stitch of that course, alternate weft yarns being formed into loops extending from the face of the fabric at each point of reversal of their yarn travel, and the intervening wefts being interlocked with the warp chain stitches at each point of reversal thereof relative to the chain stitches m a, wefto! the said weft yarns being formed into loops wise direction. extending outwardly 1rom the race of the fabric

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