US981318A - Method of producing openwork knitted fabric. - Google Patents

Description

R. W. SCOTT. METHOD OF PRODUCING OPENWORK KNITTED FABRIC.

APPLICATION FILED JAN. 31, 1908.

1 1 9 1 0 1 J d m n m a P 2 SHEETS-SHEET l.

R. W. SCOTT. METHOD OF PRODUCING OPENWORK KNITTED FABRIC.

Patented Jan. 10, 1911.

2 snsms-sm APPLICATION FILED JAN. 31, 1908.

. my Letters Patent to provide ROBERT W. SCOTT, OF LEEDS POINT, NEW JERSEY, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO SCOTT & WILLIAMS, INCORPORATED, 0F CAMDEN, NEW JERSEY,

A CORPORATION OF NEW JERSEY.

METHOD OF PRODUCING OPENWORK KNITTED FABRIC.

Specification of Letters Patent' Patented Jan. 10, 1911.

Application filed January 31, 1908. Serial No. 413,685.

To all whom it may concern;

Be it known that I, ROBERT W. Soon, a citizen of the United States, residing in Leeds Point, Atlantic county, New Jersey, have' invented certain Improvements in Methods of Producin Openwork Knitted Fabric, of which the following is a specification.

My invention consists of certain improvem'ents in the method of producing the openwork knitted fabric forming the subject of No. 846,353, dated March 5th, 1907, he object of my invention being obstructed eyelet holes than thosein the previously patented web. This object I attainin the manner hereinafter set forth, reference bein had to the accompanying drawings, in w ich- Figu of fabric produced in accordance with my present invention; Figs. 2, 3, 4, and 5 are views, on an enlarged scale, illustrating the production of that type of web in which the sinker wale loops are transferred to anadjoining needle wale; Fig. 6 is a vertical sectional viewof part of the machine for pro: ducing the fabric; Fig. 7 is an inverted plan view of a cam ring forming part of said machine; Fig. 8 is a perspective view Formerly, the sinker \vale yarn in both courses was laid upon the same transfer oint, disposed to deflect the sinker-wale oops to right or left, or upon a pair of similar transfer points. disposed to spread the sinker-wale loops in both directions, and, in consequence, the loop first applied to the transfer point or points was subjected to greater tension than the loop subsequently applied, because, before the transfer of the loops, the course from which the first loop for the making of larger or less said needle wales toward re 1 is anexaggerated view of a piece 7 .efi'ect. of decreasing was drawn had been cast off and drawn forward with the web, and therefore this first loop was compelled to rob the needlewales on each side of the same, with the effect of shortening the stitches of said wales or drawing the wales together and thereby contracting the size of the eyelet hole, the tension of the first loop of the transferred pair, in the case of their transfer into a single needle wale, causing said first loop to be drawn diagonally across the eyelet hole, thereby obstructing the same, as shown at e in Fig. l of my Letters Patent No. 8%,353, and when the sinker wale loops were transferred intoneedle wales on each side of the same, the tendency of the tension upon the first loop of'the pair to shorten the stitches in the adjoining needle wales, or to draw each other, had the the area of the eyelet hole correspondingly. If, on the other hand, the first loop was drawn long enough to overcome this objection, the second loop would be too loose and would'slacken the stitches on either side of the sinker wale, or drop down across and obstruct the eyelet hole.

In the machine for carrying out my present invention, the needle cylinder or other carrier, its needles. and the cams for operating the same may be similar to those of the previously patented machine, and may operate in -the same manner as before, the novel feature of the present invention consistingin a different formation of the sinker- \vale. loops which are transferred to form the yelet hole.

In carrying out my present invention I provide a greater length of yarn for the formation ofthc first loop than for the formation of the second. and I thereby relieve the tension upon said first loop or prevent the slackening of the succeeding loop and therefore overcome the objections before noted as arising from these causes. In order to cdect this result in a machine for effecting transfer of the loops into a needle wale'on one side of thesanie, I employ, wherever a transfer is to be. effected, a pair of transfer points 1 and Q. the point 1 having the yarn-receiving portion 3 ofgreater depth than the yarn-receiving portion 3 of the other point. The yarn for forming the first loop of the pair to be transferred can be applied to both points, as shown, for instance, in Fig. 2, but before reaching the next yarn feed: the point 1 is withdrawn, whereby the: yarn for forming the second loop is applied only to the reduced portion 3 of the point 2, as shown in Fig. 3. the second loop being consequently shorter than the first and the latter'being long enough to compensate for the carrying forward of the course from which it was drawn. whereby both of the transferred loops may be under corresponding tension and no robbing and consequent shortening of the stitches of adjoining needle wales will take place. nor will there be any tendency to draw the needle wales toward each other or to slacken the upper loop and the stitches adjacent thereto, unobstructed eyelet holes of full area being consequently produced.

v By preference, the point 1 consists simply of a straight bar with butt for the action "of the cams whereby it is projected and re tracted, the transfer point 2 having the inclined member/1, whereby, when said point is projected as shown in Fig. 4, the sinker wale loops hanging upon the same will be deflected laterally into position for engagement with the adjoining needle 5 in the same, manner as before, the point being retracted,

as shown in Fig. (3, after the needle has properly engaged the loops. As the movements of the point 1, therefore, are different from the n'ioven'ients of the oint 2 inde- 7 pendent cams are employed for operating .the same, and in Fig. 2 I have illustrated cams available for the purpose, the cams 6 and 6 being the projecting cams for the points 1, the cams 7 and 7 the retracting cams for said points, the cams 9 and 9 those for effecting the initial projection of the points 2 to position for receiving the sinker wale loops, the cams 10 and 10 those intended for effecting the-final or transfer project ion of said points, and the cams 11 and 11 those for effecting the retraction of the points 2 after the transfer.

The cam ring shown is intended for use in connection with an eight feed machine, both points being projected to the l )()]')-1C('Cl\'ll1g position at the feeds a and c, the points 1 be ing retracted at. the feeds 7) and f,th e points2 being further projected after passingthe feeds Z) and f, in order to transfer their loops to the adjoining needle and being then retracted, and'both sets of points being retracted at the feeds (2 and (Z, and f/ and la, in order to provide for the formation of plain courses of stitches betweenv the courses in which the eyelet holes are formed, it being understood, of course, that there may be as many of these intervening feeds as the number of such plain courses to be produced.

In Fig. 2, I have shown one pair of trans fer points for each feed, but it will be um derstood that in operating the machine the transfer points will be located in reference is formed on said to the needles wherever it is desired to prod'uce eyelet'holes in the web.

The needles are mounted as usual to reciprocate vertically in a cylinder 15 and operated by cams ina cam ring 16, and the transfer points are mounted to reciprocate radially in a dial 17, and are operated by cams in a dial cap 19, as shown in Fig. 6.

In producing that class of fabric in which the sinker wale loops are laterally spread so asto engage with a needle wale on each side of the same, a pair of transfer points 2 and 2. areused, as shown for instance in F 9,

these points being first projected to such an which said points are slightly retracted, in

order that the next sinker wale loop may be formed upon the contiguous ends 3 of the points. and then said points are first fully projected and then fully retracted in order to transfer the loops to adjoining needles.

W hile, in the use of the points 1 and 2, it is advisable to project both of the points for receiving the initial loop in order to insure the engagement of'said loop by the point 2, said initial loop may, if desired, be formed over the point 1 only, and the point 2 may then be projected so as to engage this loop either before or after the retraction of the point 1 and before the application of the second loop, the objection to this arrangement being the possibility of the point 2 failing to properly enter the initial loop, which objection cannotapply when said loop point as well as. upon the point 1.

1V hen the points 2 and 2 are used, the stems or shanks of said points are, by preference, disposed closely side by side in order that they may work in the same groove and be operated by the same cams.

A single transfer point only may be used, if, in addition to its longitudinal reciprocating movement, it has a rising and falling movement, so that at different feeds it will occupy different relations to the draw-down points of the needles. Such rising and falling movement may be effected in different ways, and in Figs; 10 .a'n'd 11 I have shown for the purpose a jack 12 upon which the transfer point rests, this jack being guided in the same groove as the transfer point, and having one or more beveled portions 13 for engagei'i'ient with corresponding bevels in the base of the groove, whereby it will, as it is reciprocated by the action of the cams on its butt 14, be caused to rise and fall in the groove and will carry the transfer point with it. S inker wale loops in more than two adjoining courses of .the web mayalso be transferred simultaneousl to an adjoining needle wale or wales, eac loop being of a different length from the others. This would simply involve the use of a plurality of points 1 of different depths, or successive adjustment ofthe jack 12, so

as to lower it by a succession of movements.

instead of one.

It is preferahlb, in most cases, to bevel the top of each point from the end of the same back to the shoulder at the base of the inclined member 4, in order to gradually lessen the depth i, of the point and thus slaeken the sinker wale loops during the transfer operation. the lateral stretching or displacement of the loops incidentto their transfer being thereby facilitated.

I claim 2* 1. The mode herein described of produc ing a knitted web .having eyelet holes therein, said mode consisting in drawing sinker wale loops of abnormal length between certain needles before the yarn entering into said loops is knit and locked into stitches in the same course, then drawing other sinker wale loops at the same points in the fabric in the next succeeding course undervthe same ing a knitted web having eyelet holes therein, said mode consisting in drawing sinker wale loops of abnormal length between certain needles before the yarn entering into said loops is knit and locked into stitches in the same course, then drawing other sinker wale loops at the same points in the fabric in the next succeeding course under the same eireuInstances, and then transferring said pairs of sinker wale loops onto adjoining needles on each side of the same.

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

R( )BERT \V. SCOTT.

Vitnesses I Hamnrron D. TURNER, KATE A. BEADLE.

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