US1976960A - Knitting machine - Google Patents

Description

A. w. MUTCHLER ET AL 1w9?fia9fi@ KNITTING MACHINE Filed May 2, 1932 3 Sheets-Sheet 1 INVENTOR Arthur W. MUTEWEI" Zfinjney Dinyder BY u. @MWM ATTORNEY Oct. 16, 1934. w MUTCHLER ET AL 1,976,960

KNITTING MACHINE Filed May 2. 1932 3 Sheets-Sheet 2 v 0- 1934- A. w. MUTCHLER ET AL 1,976,960

KNITTING MACHINE Filed May 2, 1932 3 Sheets-Sheet 3 lllnntll II INVENTOR ArThurW. Murchl rfi iiljna y D. inydar ATTORNEY Patented Oct. 16, 1934 UNITED STATES PATENT OFFICE KNITTIN G MACHINE I Arthur W. Mulaehler and Sidney P. Snyder, Brooklyn, N. Y., assignors to Julius Kayser &

00., New York, N. Y.

. This invention relates to a knitted fabric and to the method and mechanism for producing the same, and relates more particularly to the knitting of silk stockings on straight-bar or full-fash- 5 ioned machines.

One object of our present invention is tocontrol the movement of certain of the knock-over bits, so as to vary the tension of the loops in each course, and a further object of this invention is to so manipulate the knock-over bits as to change the tension of successive loops in the same wale.

Still another object of our invention is to provide means for modifying the positions or actions of certain of the knock-over bits to produce loose or open loops in the fabric to form loose or open lines extending through the fabric at an angle to the courses and to the wales; and a still further object is to produce intersecting lines as abovedescribed to produce a diamond-shaped pattern.

With these and other objects in view the invention consists in the novel construction and arrangement of parts hereinbefore described, the method of operating the same, and in the novel fabric thus produced, all as illustrated in the accompanying drawings and particularly pointed out in the appended claims, it being understood that various changes in the mechanism and in the method of operation may be made without departing from the spirit of the invention or sacrificing any of the advantages thereof.

In the drawings,

Figure 1 is a side view of an ordinary knockover bit adapted for use in accordance with our invention;

Fig. 2 is a similar view showing a bit adapted to operate under this invention;

Fig. 3 is a cross-sectional view of a knock-over bit bed showing one of the special knock-over bits in one position;

Fig. 4 is a similar view showing the same bit in the other position; w v

Fig. 5 is a detail view showing a section of a manipulating cam in engagement with the knock over bits;

Fig. 6 is a cross-sectional view of the cam;

Fig. 7 shows part-of the mechanism for operating the cams;

Fig. 8 is a diagrammatic view showing a portion of the fabric made according to our invention;'

and,

Fig. 9 is a perspective view ofa full-fashioned stocking having indicated thereon a pattern produced according to this invention.

Referring to Figs. 1 to 7 of the drawings, the

knockover bit 10, Fig. 1, is of the usual wellation of the cam 12.

known construction, except that the rear-upper corner is beveled or recessed at 11 to accommodate a cam 12 hereinafter described; The special bit 13,-Fig. 2, is similar to the bit 10, except that the bit '13 is recessed or cut-away at 14 on its under 06 side, and at 15v at its upper shoulder, and the'bit 13 is not recessed as at 11, Fig. 1. This special formation of the bit 13 permits the cam .12 to engage and act upon the upper rear edge 16 of thegbit 13 and to rock the bit-on the point 17, 05 which engages the bottom of the bitreceiving slot 18 formed in the usual way in the bed 19 of the knock-over bits. This bed 19 is formed in the usual way with a. removable cover-plate 20, and formedin the under side of this coverplate 20 is a semi-circular groove 21 extending over the recesses 11 in the bits 10 and the parts 16 in the bits 13 and adapted to accommodate the cam 12 which latter. is adapted to rotate between the cover-plate and the bits so as to manipulate the bits 13 by engagement with the part 16 thereof; and the cam 12 is shaped as shown at Fig. 5 so as to manipulate each alternate bit, and the cam faces may be so arranged that the special bits 13 are operated successively pr-in other pre determined relation as the camis caused to rotate. As shown at Figs. 3 and 4 of the drawings, the usual needle 22 pulls the newly formed sinker loop into the recesses 23 of the bits 10, 13, but the loops engaged by the knock-over bits 13 are subjected to a pull which varies according to the, position of the cam 12; and when the rear end of ;a bit 13 has been depressed by the cam 12 the outer or forward end of the said bit is raised in such manner that the yarn of the loop resting upon this bit is pulled in such manner as to produce a relatively loose or open loop, and it will be understood that if the cam, 12 were allowed to remain stationary in any one position the bits 13 affected by the cam would produce loose or open wales extending uninterruptedly throughout the entire length of the fabric; but the rotary movement imparted to the cam 12 results in an interruptionof the open 'orloose formation in the wales and transfers the special loop formation from 1001 one wale to another, so that the pattern thus produced 'may be modiiled'in any predetermined manner dependent upon the formation and oper- The cam operating mechanism illustrated at 106 Fig. 7 comprises a pinion 24 secured on the end of the cam 12- and operated by a toothed quadrant 25 mounted on a stud 26 on a suitable. part of the frame of the machine. In the arrangement shown the quadrant 25 is adapted to rock 110 through an angle sufficient to rotate the pinion 24 through one complete revolution in each direction and the rocking movement is effected by means of a link 27 extending from the quadrant 25 to a crank arm 28 secured on a shaft 29, upon which there is also secured a ratchet wheel 30 having a locking pawl 31 and an operating pawl 32, which latter is operated by means of a swinging arm 33 loosely mounted on the shaft 29 and operated by means of a rod 34 to which movement is imparted by cam or other suitable means from a moving part of the machine; and the arrangement is such that the ratchet wheel 30 is moved step by step in one direction in such manner that intermittent movement is imparted to the quadrant 25, and the pinion 24 carried by the cam 12 is thus caused to turn through at each movement and the direction of movement is reversed when each complete revolution has been made.

The method of operating the cam 12 hereinbefore described and the formation of the cam and its relation to the knock-over bits 13 may be adapted to produce the pattern diagrammatically shown at Fig. 8 where the lines 35 represent the wales, the lines 36 represent the courses, and the marks 3'7 represent the special loops of open or loose formation produced by the knock-over bits 13 and by the movement imparted to such bits by the manipulation of the cam 12.

It will be understood that by suitable modification and arrangement of the cam various patterns may be formed with loose or open lines of loops extending in directions inclined to the 'courses of the fabric and to the wales thereof;

and Fig. 9 shows by way of illustration or example a full-fashioned lady's stocking having a diamond design produced by lines of loose or open loops extending at an angle of substantially 45 to the wales and to the courses of the stockin Although the drawings and the' above specification disclose the best mode in which we have contemplated embodying our invention, we desire to be in no way limited to the details of such disclosure, for in the further practical application of our invention many changes in the mechanism and in the method of operation may be made as circumstances require or experience suggests without departing from the spirit of the invention within the scope of the appended claims.

What we claim is:

1. In a knitting machine a series of fixed knock-over bits, a series of movable knock-over bits, a multi-faced cam directly engaging and controlling the movable bits relatively to the fixed bits, and means for rotating said cam to produce predetermined pattern effects.

2. In a knitting machine a series of fixed knockover bits, a series of movable knock-over bits, a multi-faced cam directly engaging and controlling the movable bits relatively to the fixed bits, an intermittently moving member for rotating said cam to produce predetermined pattern ef- Iect and ratchet mechanism for actuating said intermittently moving member in properly timed relation to the knitting operation.

3. In a knitting machine a series of fixed knockover bits, a series of movable knock-over bits, a 106 multi-iaced cam directly engaging and controlling the movable bits relatively to the fixed bits to produce diamond pattern effect in the fabric and intermittently actuating means for rotating the cam in both directions for controlling the 110 movable bits in predetermined order.

ARTHUR W. MUTCHLER. SIDNEY P. SNYDER.

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