US1118713A - Yarn-feeding mechanism for circular-knitting machines. - Google Patents

Description

H. H. WEST.

YARN FEEDING MECHANISM FOR CIRCULAR KNITTING MACHINES. APPLIGATIVON FILED APR. 6, 1914.

1, 1 1 8,7 1 3. Patented Nov. 24, 1914.

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@nve "010 H. H. WEST. YARN FEEDING MECHANISM FOR CIRCULAR KNITTING MACHINES.

APPLICATION FILED APR.6.1914.

1, 1 1 8,713. Patented Nov. 24, 1914.

4 SHEETS-SHIIIIT 2.

3 nuawl on H. H. WEST.

YARN FEEDING MECHANISM FOR CIRCULAR KNITTING MACHINES.

lm/Memes APPLICATION IILEI) APR. (3. 1914.

Patented Nbv. 24, 1914.

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amour/tow H. H. WEST. YARN FEEDING MECHANISM FOR CIRCULAR KNITTING MACHINES. APPLICATION FILED APR. 6. 1914.

1,118,713, Patented Nov. 24, 1914.

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OFFICE.

HARRY H. WEST, OF PLYMOUTH, PENNSYLVANIA.

-YAEN-FEEDING MECHANISM FOR CIBGULARrKNITTING MACHINES.

Specification of Letters Patent.

Patented Nov. 24, 1914.

Application filed April 6, 1914. Serial No. 829,936.

To all whom it may concern:

Be it known that I, HARRY H. Wear, a citizen of the United States, residing at Plymouth, in the county of Luzerne and State of Pennsylvania, have invented cer' tain new and useful Improvements in Yarn- Feeding Mechanism for Circular-Knitting Machines; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to automaticcircular knitting machines and to especially that vty e employed in knitting stockings and soc rs, the invention being directed particularly to a yarn changing mechanism for said machines for producing spliced or reinforced work.-

The main object of the invention is to provide a mechanism of this character for producing spliced portions of different widths, such for instance as a narrow splice above the heel and a wide splice for the foot.

The stockings in use at the present day have high spliced heels and double soles of the same width, both of said spliced portions being knit on the same number of needles and consequently when a narrow splice is formed above the heel necessarily a narrow splicing strip only will be formed on the foot and similarly when a wide strip is formed. I

- This invention 'comprehends certain improvements which are especially applicable to what is known to the trade as the Banner knitting machine the general construction of' which is shown in my copending applications Serial Number 822,435, filedMarch 4, 1914 and Serial Number 822,434, filed on even date therewith. A machine equipped with these improvements is designed for knitting a stocking having a narrow splice at one point and a wider splice at another, for instance a narrow splice above the heel to present a neat appearance while at the same time providing means for strengthening the fabric where the greatest amount of wear occurs, and-the wide splice for the foot covering the sole and extending well up on both sides of the foot to receive the wear at these points and thus prolong the life of the stocking.

With these and other objects in view, the invention consists of certain novel features of construction, and the combination and arrangement of parts as will be more fully described and claimed.

In. the accompanying drawings: Figure 1 represents a front elevation of a portion of a circular knitting machine equipped with these improvements; Fig. 2 is a transverse vertical section taken substantially on the line 2-2 of Fi 1; Fig. 3 is a similar view taken on the line 3-3 of Fig. 1; Fig. 4 1s a rear elevation of the portion of the machine shown in Fig. 1 with parts broken away and in section; Fig. 5 is a top plan view of the machine with parts broken out and in section; Fig. 6 is an enlarged fragmentary plan view with parts broken out and in section; Fig. 7 is a fragmentary vertical section Showing the shoe in operative position; Fig. 8 is a side elevation partly in section of the cam for controlling a splicing yarn; Fig. 9 is a front edge view of said camp; Fig. 10 is a detail vertical section showing a front view of the shoe and its connected parts; and Fig. 11 is a side elevation of a stocking produced by a machine having these improvements applied.

In order to connect up the attachments comprising this invention with the co-acting parts of the machine I shall first describe the illustrated mechanism of the knitting machine with which this invention is adapted to cooperate to wit: A revoluble needle cylinder N is shown mounted on the bed plate a and is adapted to be rotated by the driving shaft 8 through intermediate gears (not shown). On this driving shaft 8 are mounted the usual driving gears 2' and 71 between which the clutch 1) slides and is adapted to connect with one or the other of on a drum f on'the cam shaft 8' whereby the clutch b is shifted at predetermined in tervals controlled by the pattern chain B to change the motion of the machine from continuous rotary to reciprocatory and vice versa during the knitting of a stocking.

The cam shaft 8 which carries the speed and yarn changing cams, etc., has also secured thereto a disk to provided with the cams 79 for controlling the movements of the belt shipper 9 and on the periphery of this disk is a radially extending cam 1 for a purpose to be described.

Contiguous to and at the right of the cylinder N is located a hollow stationary standard K in the upper part of which a plurality of horizontally disposed fingers f are pivoted intermediately of their ends. The outer ends of these fingers are joined to downwardly extending wire links 7 which latter are connected with the rear end of the respective tilting levers f (see Fig. 1). The front or free ends of these'levers are in normal sliding contact with corre sponding cam ribs in y and a on the cam drum f which is secured to the cam shaft .9 and adapted to be rotated in a step by step manner in the direction of the arrow shown in Fig. 2 by means of a fine toothed wheel 0 and chain carrying sprocket (Z fixed thereto. These wheels 0 and (Z turn in unison on the shaft .9 and through the pawls and 72 rotate at intervals a coarse ratchet toothed cam wheel 6 fixed to said shaft .9.

A pivoted supporting plate or latch guard G is disposed above and concentric with the eylinderl l, its inner face, when in use, being close to the front of the upper portion of the circular column of needles. Thread guiding or feeding arms 09, y and e are pivoted on said guard C and suitably disposed in relation to the needle cylinder and the other coacting mechanism, being held in their respective knitting positions by the springs (2. These arms are manipulated by the levers or fingers f which are controlled by the cams m, 3 and 12- on the cam drum f mounted on shaft .9. These arms 02, g and 2 as usual receive the yarn through eyes (Z formed in their inner ends, from the guide plate a, which latter receives the yarn from suitable bobbins not shown.

Referring now more particularly to the splicing yarn feeder and the means for controlling it constituting this invention, the cam l secured to thedisk w is designed for controlling a lever 2 fulcruined intermediately of its ends on the machine frame being disposed in horizontal position and having a nose 3 on its free front end disposed in the path of said cam 1 (see Fig. This lever r iema plane at right angles to the arm 5 and has an enlargement 9 at its free end which is positioncd adjacent and in alinement with one end of a sliding shaft 10. This shaft 10 is mounted to slide in the machine frame and in a bracket 11 depending from the bed plate a of the machine and extends in a plane at right angles to the arm 8 (see Figs.

l, 5, 6 and The inner end of this shaft 10 is reduced as shown at 10 and on this reduced portion is a sleeve 12 which preferably turns on said reduced shaft end being confined between the shoulder 10 at the inner end of the reduced portion 10 and a collar 13 secured to the outer end of said portion 10 It is obvious however that this sleeve may be fixed to the shaft and the shaft turned in its bearings if desired.

Fixed to the sleeve 12 preferably near its outer ends are two oppositely extending arms Ill and 16 which are preferably made integral with said sleeve and are adapted to turn therewith. The arm 14 extends downwardly and is provided at its free end with a shoe 15 for a purpose to be described. The other arm 16 extends laterally under the hollow standard K in which are housed the fingers f which manipulate the yarn, ,feeding arms at, 3 and z. The free end of the arm 16 is connected with a rod 17 extending upwardly into the standard K and adjustably secured to a block 18 disposed in said standard. Another rod 19 is also adjustably connected with this block 18 and is connected with the finger f which manipulates the yarn feeder a: carrying the'splicing yarn The usual wire link f is also connected with this finger f and with the rear end of one of the levers i adapted to be controlled by the properly positioned cam 00 on the cam drum 7 (see Fig. 7) in the path of which the depending nose or toe f of saidlever extends.

An l..-shaped spring 20 secured at one end i to the bracket '5 bears atits other end on the shoe carrying arm 14 and exerts its tension to force said shoe inwardly for a purpose to be described, the short arm of said spring being sufliciently long to engage said shoe carrying arm 14: in all of its positions.

The outer end of shaft 10 projects beyond the right end of the machine frame and has a collar 21 secured to its terminal. A coil spring 22 is mounted on this shaft 10 between said collar 21 and the adjacent end of the machine frame and exerts its tension to hold said shaft 10 normally in the position shown in Fig. 5 with the shoe 15 in the path of the cam face 25 on a cam 23 now to be described. This cam 23 is fixed to the hub of the clutch b and is provided on its periphery with two cam faces 24 and 25 arranged side by side with one of which the shoe 15 is designed to engage when the cam 41: moves from under the nose i of the lever f. This shoe 15 is adapted to be laterally shifted to engage it with either of the cam faces 24: or 25 when the shaft 10 is moved longitudinally in the desired di-' rection by means of the cam controlled lever 2.

From the above description it will be obvious that the engagement of the toe f of the lever f which controls the splicing yarn carrier with the face of the drum f will prevent the shoe 15 on the arm 14. from moving into the gap in cam 23 during the passage of said cam under said shoe.

The rear end of lever 2 is limited in its downward movement by a stop disposed thereunder and here shown in the form of a pin or stud 2 positioned to engage the rear end. of said lever and hold it in horizontal position thus preventing the toe 3 thereof from moving into the gaps between the cams 7) on the disk as.

In the operation of the machine equipped with these improvements for knitting a stocking having a narrow splice above the heel and a wide double sole extending well upon the sides of the foot, the circular knitting for forming the leg is performed in the usual manner with a single thread Z until the point A shown on the stocking S in Fig. 11 is reached at which point it is desired to begin the formation of the narrow splice above the heel. During the knitting of this portion of the leg the cam wheel (2 has been turned by the pawl [L8 and has through shaft 8 turned the cam disk to a suflicient distance to bring its peripheral cam 1 under the nose 3 of the lever 2 thereby lowering said nose and raising the bar 1 and arm 5, thus rocking shaft 6 and moving arm 8 inward against shaft 10, whereby said shaft is forced inward against the'tension of the spring 22 into the position shown in Fig. This inward movement of shaft 10 positions the shoe 15 in the path of the short working cam face 24 of cam 23. After the parts have been so positioned, the splicing yarn X cannot be thrown in until the wheel 0 has been turned sufficiently to cause cam :0 to pass from under the nose F" of lever f (see Fig. 7). When the wheel 6 has been so moved the cam m moves from under said nose and the spring (Z forces the splicing yarn feeder a: downward to position the yarn X in the path of the needles and at the same time forces the front end of its finger f down, thereby elevating the rear end of said finger and through wires f raises the rear end of lever f and forces its nose i downward into engagement with the drum f. Simultaneously with the positioning of nose f on drum f the arm 16 is raised through the rods 17 and 19 which connect said arm with said finger f. This raising of arm 16 turns the sleeve 12 and moves arm 14 carrying the shoe l5 inward in the path of the cam 24 where it is yieldably held by spring 20. When the parts are in this position two yarns are now in operation to wit: the yarn Z used in making complete courses for knitting the leg and the splicing yarn X which has just been thrown in in the manner above described, and which is in. operation for a portion of a course only, the length of which is controlled by the length of the cam face 24 on which the shoe 15 travels. When this cam face 24 passes from under shoe 15 and the periphery of the cam 23 from the point 30 to 40 moves under said shoe, the arm 14 is moved outward and arm 16 downward thereby lowering the rear end of finger f connected there with and raising its front end thus elevating the splicing yarn feeder a: and throwing the yarn out of operation during the knitting of the remainder of the course, said yarn X which floats during this knitting as well as that which floats during the knitting of'the foot may be :cut by hand after the completion of the stocking or taken care of by a device such as that shown in my Patent 965,351. dated Feb. 26, 1910. This operation is repeated during each course knit between point A and the beginning of the narrowing for the heel H, the machine having under turning of wheel 0 slowed up prior to its change to reciprocatory knitting. The cam drum f has also been turned sufiiciently to remove the cam y from under its proper lever f for throwing the heel yarn into operation, the cams m and 2 being then positioned under the other two levers whereby the yarn feeders controlled thereby and which carry the leg knitting yarn and the splicing yarn, are held up out of the path of the needles. The instep cam (not shown) has in the meantime been raised by the shifting of the clutch lever Z) to the left and thereby elevated all of the long butt needles here constituting about one-third of the whole column more or less. When the cam drum f was turned as above described the disk 10 was also turned sufficiently to move cam 1 from under nose 3 of lever 2 thereby lowering bar 4 and short arm 5 and rocking shaft 6 and moving the arm 8 away from said shaft 10 which permits the coiled spring 22 to expand and slide shaft 10 outwardly a distance suflicient to position the shoe 15 on arm 14 in the path of the cam face 25 on cam 23. Simultaneously with this turning of said disk 10 the cam drum f turns sufiiciently to positionthe cam a" undeinthe toe f of lever f which controls the splicing yarn X and lowers the rear end of said lever and through its wire f lowers the rear end of its finger f and raises the front end of said finger thereby forcing the splicing yarn feeder w upward removing the yarn X from the path of the needles. This lowering of the rear end of the lever f connected with the splicing yarn feeder a; also lowers rods 19 and 17 thus forcing arm 16 downward and the shoe carrying arm 14: outward into the position shown in Fig. 2 in which position it remains during the knitting of the heel,

The large heel shown in Fig. 11 is then knit in the usual manner on the active needles here constituting two-thirds, more or less, of the entire column, by first narrowing and then wideninm After the completion of the heel, the turning of drum f by the cam wheel 6 controlled by the pattern chain B causes the cam 3 on said drum to pass under the lever f which controls the heel yarn feeder y and whereby the rear end of said lever is lowered and'pulls down on its wire f and the rear end of finger f thereby raising the inner end of said finger f and forces the yarn carrying end of said feeder y up against the tension of its spring d out of the path of needles thereby throwing out the heel yarn. At the same time the cams a2 and .2 pass from under the levers which control the splice yarn feeder 5c and leg and foot yarn feeder e and vthereby perinit the toes of these levers to engage the face of said drum f through the action of their springs 6Z5, fingers f and their respective wires 7, The raising of the rear ends of said fingers exerts a pull on wires and thus elevates the rear ends of their levers f and forces their toes downward into contact with the face of the drum 7, This action of the springs Z lowers the yarn feeders w and 2 into the path of the needles thus feeding in the leg and foot yarn Z with which the full circular courses are knit and the splicing yarn X which is fed to the needles for a portion only of each circular course which is controlled by the length of the cam in the path of which the shoe is positioned at the beginning of the knitting of the foot, said cam being here shown of a length sufficient to feed in the splicing yarn to two-thirds of t e entire column of needles each circular course, whereby a wide foot splice F is formed corresponding in width to the width of the large heel 1'1" thereby producing a foot splice which extends over the sole and well up on the sides of the foot as is shown clearly in Fig. 11.

Before the knitting of the foot begins, it is of course understood that the clutch b has been shifted to the right to position the parts for continuous circular knitting and more or less during the knitting of that the'passage of cam m from under the toe of the lever P which controls the splicing yarn feeder w in addition to the positioning the splicing yarn in the path of the needles also through rods 17 and 19, raises arm 16 and moves arm 14: toward the cam 23 thereby positioning the shoe 15 in the path of the cam 25 causing it to bear thereon and be controlled thereby. This spring pressed shoe 15 when the cam 25 passes from under it during each reciprocation of the cylinder while knitting the foot, rides on the periphcry of cam 23 from the points to and when the cam is in this position under said shoe, the shoe is moved outward a sufficient distance to lower arm 16 and the finger f connected therewith, thereby raising the splicing yarn feeder an out of the path of the needles and cause this yarn to float during this part of the knitting of each circular course. Near the completion of the foot when the machine slows down prior to the reciprocatory knitting for the toe, the yarn used for knitting the heel and toe may if desired, be thrown in for forming the extended toe T and just before the machine goes on the toe proper, one half of the entire column of needles is elevated into inoperative position by means not herein shown and the toe is then knit in the usual manner by first narrowing and then widening and after the toe has been completed, the machine is again thrown onto circular knitting for forming the loopers hold courses and when these have been knit, the completed stocking is pressed ofii ll claim as my invention 1. lln a circular knitting machine, the combination of a plurality of yarn carriers for supplying different yarns at predetermined intervals to form spliced or reinforced fabric, means for actuating one of said carriers at predetermined intervals for throwing an auxiliary yarn into operation, a double faced cam, the faces of which are of varying lengths and laterally shiftable means for cooperation with said cam faces to engage one or the other thereof to vary the length of time said auxiliary yarn shall remain in operation.

2. In a circular knitting machine, the combination of a plurality of yarn carriers for siupplying different yarns at predetermined intervals form spliced or reinforced fabric, means for actuating one of said carriers at predetermined intervals for throwing an auxiliary yarn into operation, a cam having peripheral cam faces arranged side by side and of different lengths, and a laterally shiftable element connected with said yarn carrier for engaging one or the other of said cam faces for varying the length of time said yarn shall remain in operation.

' 3. In a circular knitting machine, the combination of a plurality of yarn carriers for supplying diflerent yarns at predetermined intervals to form spliced or reinforced fabric, means for actuating one of said carriers at predetermined intervals for throwing an auxiliary yarn into operation, a cam having peripheral cam faces arranged side by side and of different lengths, a laterally shiftable element connected with said yarn carrier for engaging one or the other of said cam faces for varying the length of time said yarn shall remain in operation, and cam controlled means for shifting said element at predetermined intervals.

1:. In a circular knitting machine, the combination of a plurality of yarn carriers for supplying different yarns at predetermined intervals to form spliced or reinforced fabric, means for actuating one of said carriers at predetermined intervals for throwing an auxiliary yarn into operation, a cam having peripheral cam faces arranged side by side and of different lengths, a shiftable element connected with said yarn carrier for engaging one or the other of said cam faces for varying the length of time said yarn shall remain in operation, and cam controlled means forshifting said element at a predetermined interval during the knitting of the stocking leg to position said element in the path of the longer cam face and at the beginning of the knitting of the foot to position it in the path of the shorter cam face whereby a narrow splice is formed in the leg and a wide splice in the foot.

5. In a circular knitting machine, the com bination of a plurality of yarn carriers for supplying different yarns at predetermined intervals to form spliced or reinforced fabric, means for actuating one of said carriers at predetermined intervals for throwing an auxiliary yarn into operation, a cam having peripheral cam faces arranged side by side and of different lengths, a laterally shiftable element connected with said yarn carrier for engaging one or the other of said cam faces for varying the length of time said yarn shall remain in operation, and cam controlled means for shifting said element at predetermined intervals to position it first in the path of the shorter cam face and then in the path of the longer cam face.

6. In a circular knitting machine, the combination of a plurality of yarn carriers for supplying different yarns at predetermined intervals to form spliced or reinforced fabric, means for actuating one of said carriers at predetermined intervals for throwing an auxiliary yarn into operation, a cam having peripheral cam faces arranged side by side and of different lengths, a laterally shiftable element connected with said yarn carrier for engaging one or the other of said cam faces for varying the length of time said yarn shall remain in operation, and cam controlled means for shifting said element at predetermined intervals to position it first in the path of one of thecam faces and then'in the path of the other to vary the width of the splice formed thereby.

7. A circular knitting machine including a drive shaft, a plurality of spring pressed yarn carriers, fingers pivoted intermediately of their ends and having one end positioned under said yarn carriers, cam controlled levers, elements connecting the other end of said fingers with one end of said levers, a cam mounted on said driving shaft and having a plurality of cam faces a shoe mounted to move radially and transversely relatively to said cam in the path thereof and conneoted with one of the yarn carrier fingers, and means for moving said shoe radially at predetermined intervals for positioning it in and out of the path of said cam to throw into and out of operation an auxiliary yarn and means for moving it transversely at predetermined intervals.

8. A circular knitting machine including a drive shaft, a plurality of spring pressed yarn carriers, fingers pivoted intermediately of their ends and having one end positioned under said yarn carriers, cam controlled levers, elements connecting the other end of said fingers with one end of said levers, a cam mounted on said driving shaft and having a plurality of cam faces, a shoe mounted to move radially and transversely relatively to said cam in the path thereof and connected with one of the yarn carrier fingers, and cam controlled means for moving said shoe radially at predetermined intervals for pcsitioning it in and out of the path of said cam to throw into and out of operation an auxiliary yarn and means for moving said shoe transversely relatively to said cam at predetermined intervals.

9. A circular knitting machine including a drive shaft, a plurality of spring pressed yarn carriers, fingers pivoted intermediately of their ends and having one end positioned under said yarn carriers, cam controlled 1cvers, elements connecting the other end of said fingers with one end of said levers, a cam mounted on said driving shaft and having a plurality of cam faces, a longitudinally slidable shaft mounted in a plane parallel with said drive shaft, a rotatable sleeve on said shaft having arms extending therefrom in planes at right angles to each other, a shoe on one of said arms for engagement with said cam, and means connected with the other arm for actuating said shoe carrying arm to position the shoe at intervals in the path of said cam.

' 10. A circular knitting machine including a driveshaft, a plurality of spring pressed yarn carriers, fingers pivoted intermediately said fingers with one end of said levers, a cam mounted on said driving shaft and having a plurality of cam faces, a longitudinally slidable shaft mounted in a plane parallel with said drive shaft, a rotatable sleeve on said shaft having an arm provided with a shoe, and means for rocking said sleeve to position said shoe at predetermined intervals in the path of said cam.

11. A circular knitting machine including a drive shaft, a plurality of spring pressed yarn carriers, fingers pivoted intermediately of their ends and having one end positioned under said yarn carriers, cam controlled levcrs, elements connecting the other end of said fingers with one end of said levers, a cam mounted on said driving shaft and having a plurality of cam faces, a longitudinally slidable shaft mounted in a plane parallel with said drive shaft, a rotatable sleeve on said shaft having an arm provided with a shoe, and cam controlled means for rocking said sleeve to position said shoe at predetermined intervals in the path of said cam.

12. A circular knitting machine including a drive shaft, a plurality of spring pressed yarn carriers, fingers pivoted intermediately of their ends and having one end positioned under said yarn carriers, cam controlled levers, elements connecting the other end f said fingers with one end of said levers, a cam mounted on said driving shaft and having a plurality of cam faces, a longitudinally slidable shaft mounted in a plane parallel with said drive shaft, a rotatable sleeve on said shaft having an arm provided'with a shoe, means for rocking said sleeve to position said shoe at predetermined intervals in the path of said cam, and a spring engaging said arm to yieldably hold said shoe in engagement with said cam.

13. A circular knitting machine includ-' ing a drive shaft, a plurality of spring pressed yarn carriers, fingers pivoted intermediately of their ends and having one end positioned under said yarn carriers, cam controlled levers, elements connectingthe other end .of said fingers with one end of said levers, a cam mounted on said driving shaft and having a plurality of cam faces, a longitudinally slidable shaft mounted in a plane parallel with said drive shaft, 21. rotatable sleeve on said shaft having an arm provided with a. shoe, means for rocking said sleeve to position said shoe at predetermined intervals in the path of said cam, a spring for forcing said shoe normally to ward said cam, and cam controlled means for holding said shoe against the tension of said spring out of the path of said cam at predetermined intervals.

14. A circular knitting machine including a drive shaft, a plurality of spring pressed yarn carriers, fingers pivoted intermediately of their ends and having one end positioned under said yarn carriers, cam controlled levers, elements connecting the other end of said fingers with one end of said levers, a cam mounted on said driving shaft and having a plurality of cam faces, a longitudinally slidable shaft mounted in a plane parallel with said drive shaft, a rotatable sleeve on said shaft having an'arm provided with a shoe, means for rocking said sleeve to position said shoe at predetermined in tervals in the path of said cam, a spring engaging said arm to yieldably hold said shoe in engagement with said cam, and means for shifting said shoe to position it alternately at intervals in the path of one of the cam faces on said rotatable cam and then in the pith of the other.

15. A circular knitting machine including a' drive shaft, a plurality of spring pressed yarn carriers, fingers pivoted intermediately of their ends and having one end positioned under said yarn carriers, cam controlled levers, elements connecting the other end of said fingers with one end of said levers, a cam mounted on said driving shaft and having a plurality of cam faces, a longitudinally slidable shaft mounted in a plane parallel with said drive shaft, a rotatable sleeve on said shaft having an arm provided with a shoe, means for rocking said sleeve to position said shoe at predetermined intervals in the path of said cam, a rock shaft, an arm on said rock shaft disposed in alinenient with said sliding shaft, an upright bar connected with said arm, a lever fulcrumed intermediately of its ends and pivoted at one end to said bar and a revoluble cam positioned to engage the other end of said lever at a predetermined interval whereby said arm is moved into engagement with said sliding shaft and said shaft forced inwardly to shift the position of said shoe transversely relatively to said cam wheel.

16. A circular knitting machine including a drive shaft, a plurality of spring pressed yarn carriers, fingers pivoted intermediately of their ends and having one end positioned under said yarn carriers, cam controlled levers, elements connecting the other end of said fingers with one end of said levers, a cam mounted on said driving shaft and having a plurality of cam faces, a longitudinally slidable shaft mounted in a plane parallel with said drive shaft, a rotatable sleeve on said shaft having an arm provided with a shoe, means for rocking said sleeve to position said shoe at predetermined intervals in the path of said cam, a rock shaft, an arm on said rock shaft disposed in alinement with said sliding shaft, an upright bar connected with said arm, a lever fulcrumed intermediately of its ends and pivoted at one end to said bar and a revoluble cam positioned to engage the other end of said lever at a predetermined interval whereby said In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

HARRY H. WEST. Witnesses:

J. HOWARD SMITH, EMMA HEDDEN.

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