US1148056A - Method of knitting selvaged fabrics. - Google Patents

Description

} R.'W. SCOTT. METHOD OF KNITTING SELVAGED FABRICS.

) APPLICATION min AUG.22, 1914.

1,148,056, Patented July 27, 1915.

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ROBERT W. SCOTT, BOSTON, MASSACHUSETTS, ASSIGNOR TO SCOTT & WILLIAMS, INCORPORATED, OF BOSTON, MASSACHUSETTS, A CORPORATION OF NEW JERSEY.

METHOD OF. KNITTING SEIiVAG-ED FABRICS.

Specification of Letters Patent.

Patented July 27, 1915.

Application filed August 22. 1914. Serial No. 858;137.

To all whom it may concern:

Be it known that I, ROBERT W. ScoTT, a citizen of the United States, and resident of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Methods of Knitting Selvaged Fabrics, of which the following is a specification.

My invention relates to methods of making sclvaged knit fabrics of the genus described and claimed in my LettersPatent No. 1,045,621 dated November 26, 1912, and more particularly to making such fabrics by tucking or loop-accumulating operations.

In the accompanying drawings, Figure 1 is a diagram face View of the beginning edge of a knit article or fabric made according to my method; Figs. 2, 3 and 4: are diagrams illustrating the relation of the yarns to the knitting needles during the formation of the selvage by one series of operations; Figs. 5 to 8 are illustrations of and web-holders showing well known machine devices upon which the new method may be practised; Figs. 9 and 10 are viewsillustrating the first and second course during a modified series of operations; and Fig. 11 is a View similar to Fig. 1 illustrating the resulting fabric.

Heretofore a setting-up course on a single series of naked needles has not been possible without first causing some of the needles to pass beneath the new yarn, as by passing them below the leading stitch cam. I' will now disclose amethod of forming such a course by causing all of the needles to take yarn and then selectively casting oil the yarn from some of them only, preferred devices for practising the method comprising means for tucking by failure to cast olf at some of the needles, for instance long latch needles distributed among the other needles.

Referring now to Fig. 9, the operation may be carried out on an endless series of instruments such as latch needles n, by laying an initial course 1 inthe hooks of all of said instruments, for instance beginning at a, this step inclui'ling if desired the overlapping of said initial course on some of the needles, for instance twice to include the needles 1 and 197 to 200, as shown, the yarn being then passed toward the backs of the needles as at b, when it may be severed, or held for introduction at another time.

To provide a fast edge, the initial yarn 1 is now to be so enveloped by the next succeeding yarn that it may serve. to lock against raveling the following web. is shown in my said patent, a fast-selvage or edge for this purpose ensues when the loops or bights of the next yarn pass recurrently in front of and behind such an initial run or course, and I now provide for so forming such a second course by removing from the hooks of each of a recurrent series of said instruments the bights (Z, Fig. 3, held in said hooks, in any manner, for instance by casting oif the bights d of alternating needles or groups of needles, as shown at each even-numbered needle, prior to placing a new yarn for course 2 in said hooks. This operation will include passing the cast-off bight d, as shown in Fig. 3, behind the needle upon which it was formed.

For the desired purpose of adapting the fabric produced and the steps of its manufacture to production by well-known devices, I may employ for laying the course 1 as described any known form of yarn feeding and other devices capable of laying a yarn on all the needles, beginning at a and ending at b; and for the ensuing step of casting off the bights of said course at recurrent needles, I may employ any known means for causing some of the needles, as the odd-numbered series, to be positioned or operated in the absence of new yarn, in the same manner as they might be positioned or operated for tucking in the presence of a new yarn. As an instance only I have illustrated in Figs. 5 and (3 representative needles 193 and 194, one series, as that containing needle 193, being provided with long latches y, the remaining needles, as 194, having shorter latches w, as shown in Fig. 6. I may remove the yarn at Z), and then operate all of the said needles with respect to their customary knocking-over devices, such as web-holders 20, Figs. 5 to 8, so as to retain the bights (l of the long latch needles when the needles are again retracted, and to cast ofi' the loops of the short latch needles. To aid in this opera to close their latches, and to cause the cast- 01f bights d to pass behind the needles as shown in Fig. 3. I now, form the second course, beginning at any part of the series of needles as shown at c, Fig. 4, by feeding yarn 2 to the hooks of needles now standing recurrently in front of and behind the initial yarn oryarns, and subsequently cast off on to the recurrent loops w of yarn 2 the retained bights of yarn '1, Fig. l. Each of the needles now retains in-its hook a stitch w or a bight z of yarn 2, and course 3 may be knit normally.

The described procedure for course 1 resulted in supplying to the needles yarn 1nterlocke'd behind recurrent needles so that at course 2 and at subsequent courses the webholders may be retracted, for their usual function, to the position indicated by dotted lines in Fig. 8, and advance again, as usual. All of the needles, for normal knitting will of course be given sufiicient advancing m0Ve ments to clear both long and short latch needles. Having initiated knitting at all of the needles, I may now knit any desired ex tent of fabric, which, if desired, may be provided with tucked loops occurring in the wales initiated at any of the loops 2 of the second course.

Referring now to Figs. 5 to 11, I may practice my method by aid of the illustrated machine devices comprising web-holders 20 having upper inwardly sloping surfaces 20, and in this case one procedure is as follows: A first course 1 is fed to all of the needles; a second course 2 is then fed while the webholders are advanced (Fig. 5) the short latch needles being advanced (Fig. 6) and the long latch needles not being advanced (Fig. 5) far enough to clear. The needles are then retracted, thereby casting off course 1 at all of the needles having shorter latches m while retaining bights d of both course 1 and course 2 at all needles having longer latches y (Figs. 7 and 8), the slopes 20 permitting course 2 to engage beneath the hooks of the web-holders 20. An advance sufiicient to clear all the latches of all of the needles is now made prior to taking course 3, during which advance said web-holdersremain in the forward position illustrated in full lines in Figs. 6 to 8.

The yarns are now arranged upon the instruments as illustrated in Fig. 10, course 1 being recurrently in front of and beneath the open latches and behind the respective needles. The needles thereafter take yarn for the third course 3, during or after which the web-holders may be operated as usual in the art.

The described steps have resulted in casting off the bights d of courses 1 and 2 on to the bights 'w of course 3, and in casting off yarn 2 at each of the needles having short latches 00, said short latch needles forming loops 2' of course 3 in front of the yarn of course 1. The selvage structure of my said patent is thus formed with respect to the yarns 1 and 3, yarn 2 not being interlooped with or forming a permanent part of the fabric, although said yarn may be retained at the edge of the fabric in some cases by friction.

In each instance described, the steps taken place the initial yarn upon a series of needles, then cast off the bights of said yarn from recurrent needles, and pass said bights behind their needles, prior to causing another yarn to be drawn into loops together enveloping said initial yarn, for the purposes of my said patent. Said steps further comprise operations capable of being per-v formed by movements given in an orderly manner to the knitting instruments, and therefore adapted to automatic machinery organized for-this purpose.

WVhat I claim is:

1. The art of knitting selvaged fabrics comprising first forming bights of an initial yarn at each of a series of needles, then casting off said bights at recurrent needles, and thereafter forming a course enveloping said initial yarn.

2. The art of knitting fabrics having a beginning selvage comprising forming bights of yarn on each of a series of needles, then casting said bights from recurrent needles, then passing said bights behind said recurrent needles, and then knitting a second and following courses.

The art of knitting selvaged fabrics on a series of needles comprising laying in the hooks of all of said needles an initial run of yarn, then operating upon said yarn at all of said needles to cast said initial run of yarn from recurrent needles and pass said needles in front of their cast-off bights, and thereafter supplying said needles with new yarn and operating them to knit normally.

4. The art of knitting selvaged fabrics on a series of needles comprising laying in the hooks of all of said needles an initial run of yarn, then operating upon said yarn at all of said needles in the absence of new yarn to cast said initial run of yarn from recurrent needles and pass said needles in front of their cast-off bights, and thereafter sup plying said needles with new yarn and operating them to knit normally.

5. The art of operatin a knitting machine having needles to form a beginning selvage comprising feeding yarn to all of the needles, then operating upon the yarn at some of the needles to retain said yarn, and at other needles to cast off the yarn, and thereafter feeding yarn and operating the needles normally to knit.

6. The art of operating a knitting ma-.

chine having needles and yarn-feeding deceasing to feed yarn while operating upon the yarn at some of the needles to retain said yarn, and at other needles to cast off the yarn, and thereafter feeding yarn and operating the needles normally to knit.

7. The art of operating a knitting machine having needles and yarn-feeding devices to form a beginning selvage comprising feeding yarn successively to all of the needles, then repeating the operation at some of the needles, whereby the initial yarn is twice taken at some of the needles, then causing the yarn feeding devices to remove the yarn from the needles while operating some of the needles to retain the yarn, and other needles to cast olf the yarn, and thereafter feeding yarn and operating the needles normally to knit.

8. The art of knitting fabrics having selvages on a series of instruments comprising first laying at each of said instruments an initial course, then operating recurrent instruments of said series as for tucking while operating the remaining instruments as for knitting, whereby the initial course is retained at said recurrent needles and passed behind the remainder; and thereafter operating said instruments for normal knitting in the presence of new yarn during successive courses.

9. The art of operating a knitting machine having needles, web-holders and yamfeeding devices to form a beginning selvage comprising first forming bights at each of said needles of an initial yarn, and thereafter causing recurrent needles to cast off and advance in front of said bights during maintenance of stress upon said yarn by said web-holders.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing Witnesses.

ROBERT W. SCOTT.

Witnesses:

MARY F. GRIFFIN, RUTH A. RoPER.

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