US2928266A

US2928266A - Knitting machine

Info

Publication number: US2928266A
Application number: US420781A
Authority: US
Inventors: Hugh T Overton
Original assignee: Individual
Current assignee: Individual
Priority date: 1954-04-05
Filing date: 1954-04-05
Publication date: 1960-03-15
Anticipated expiration: 1977-03-15

Description

H. T. OVERTON KNITTING MACHINE March 15, 1960 FiLed April 5. 1954 4 Sheets-Sheet l 4 INVENTOR Hugh 1' fil/rbn Maia ATTORNEYS March 15, 1960 H. T. OVERTON 2,923,266

KNITTING MACHINE Filed April 5, i954 4 Sheets-Sheet 2 INVENTOR my; 7." 011 24572 ATTORNEYS March 15, 1960 H. T. OVERTON 2,928,

. v KNITTING MACHINE Filed April 5, 1954 4 Sheets-Sheet 3 mun INVENTOR Ha l ah T. Olrl'bh ATTORNEY) H. T. OVERTON KNITTING MACHINE March 15, 1960 4 Sheets-Sheet 4 Filed April 5, 1954 INVENTOR [big/7 T. al rl'bn BY M ATTORNEYS United State a en This invention relates to improvements in knitting machines of the character used for knitting hosiery, particularly socks having patterns formed along the leg portions thereof.

Knitting machines of the character used heretofore have been'capable of forming only limited patterns of relatively narrow width in opposite sides of the leg portions of socks. This has resulted from the fact that such machines have been restricted to seven steps on the pattern drums. On the other hand, it is often desirable to increase appreciably the range of the various patterns knitted in such socks, both as to circumferential disposition thereof and as to the character of the different patterns. 3

One object of this invention is to increase appreciably the range and extent of the patterns provided in a knitting machine of the character mentioned to produce uncams which are operated from the pattern drum to sup-- plement the operation of the plungers which'aremoved by cams on the pattern disks. By providing two jack leveling cams movable by control disks that may be located at each of two points in the height of the pattern drum, when the invention is used in connection with one form of knitting machine, as one embodiment of the invention, this will provide four different ranges of control, in addition to the controls provided by the cams acting on the conventional plungers.

Special forms of jacks are provided having high and low butts thereon for selective control by the respective jack leveling earns to provide for the actions thereof in controlling the needles. These butts are formed on the jacks to supplement the usual sawtooth butts thereon which cooperate with the plungers that are moved by the pattern cams. The additional pattern discsactuate cams that cooperate with the high and low butts on the jacks to cut in or cut out the jacks according to the pattern to be formed. In this way, the pattern range can be increased from seven steps to thirteen or more steps on a machine originally designed for only seven steps.

I have also provided a blanking cam which acts on the butts of the needles to lower the latter and thereby eliminate the pattern when knitting portions of the sock. This blanking cam is operated in timed relation with the machine, as for instance by a cam mounted on the drunr shaft, either directly on the main pattern drum or on a separate drum mounted thereon and whichoperates in proper and desired relation to the main pattern drum.

This embodiment of the invention is illustrated in the accompanying drawings, inwhich: r

Fig. 1 is a partial side elevation of a knitting machine embodying this invention, with parts broken away and omitted;

Fig. 2 is a top plan view thereof;

Fig. 3 is a detail perspective view of the blanking cam operating means;

Fig. 4 is a diagrammatic view, partly in side elevation, showing the operating means and cam drums for the cams;

Fig. 5 is a detail perspective view, partly in section, of the jack leveling cams and jacks;

Fig. 6 is a perspective view of the jack-leveling cams and assembly from the opposite side; I

Fig. 7 is a perspective view of one of the pattern disks, detached;

Fig. 8 is a vertical section through the needle cylinder, showing a needle and jack; and

Fig. 9 is a side elevation of a knitted hose.

The invention is shown as applied to a knitting machine of a conventional form which operates in the usual way. Conventional parts of the machine are omitted from the drawings as unnecessary to an understanding of the invention.

The conventional machine frame is indicated generally 7 extending vertically in'the periphery thereof within which grooves needles 12 are slidably mounted in the usual way. Each of the needles 12 is provided with a butt v1 t thereon to be acted on by the blanking cam, hereinafter described, for lowering the needle with respect to the cylinder 6 and for moving it out of its operating position during the knitting of portions of the sock in the regions of the heel and toe.

Also mounted in the lower end portions of the grooves 10 beneath the respective needles 12 are jacks 16. Each of the jacks 16 is constructed at its upper end to abut against the lower end of a superposed needle 12 in the same groove 10, to liftthe needle in proper timed relation with the operation of the machine. Each jack 16 is formed with the usual sawtooth butts, generally indicated at 18, at the lower end portion thereof. At the upper end of the row of sawtooth butts 18 is a pair of spaced

butts

20 and 22 in position for cooperative engagement with the jack leveling cams, as hereinafter described. The butts 20'and 22 are spaced apart a distance corresponding with twice the width of each butt so as to be acted on, respectively, by the jack leveling or selecting cams uponmanipulation of the latter by the cams on the pattern drum, thus providingthe necessary space for the selecting cams.

The pattern drum is illustrated generally at 24 and is supported on avertical shaft 26. The pattern drum is provided with a series of circular rows of cams formed on disks 27. The drum 24 may be fixed to the shaft 26 and the disks 27 are also fixed to the drum 24. Each disk has a row of cams on the periphery thereof, spaced apart circumferentially. The disks 27 preferably are formed of relatively soft material in order that the cams may be broken off at selected intervals according to the pattern to be formed by the machine.

As usual, two separate series'of pattern disks 27 are provided in superposed relation, spaced axially of the shaft 26. In addition to the conventional pattern disks 27 provided on the drum 24, I have provided two pairs of

special pattern disks

28 and 30 located, respectively,

Patented Mar. 15 1 960;

a aes:

at the upper end of each pattern series provided on the pattern drum 24.

The pattern drum 24 is adapted for step-by-step rotation in the direction indicated by the arrow in Fig. 2, for which purpose the support for the pattern disks has secured to the lower end thereof a ratchet wheel 32, operated by a pawl 34, which pawl 34 in turn is powerdriven by the operating mechanism of the machine. This pawl usually is operated by a lever mechanism, which in turn is moved back and forth by cams power-driven in timed relation with the operation of the machine. This mechanism is well understood in knitting machines of the type described and need not be described in detail.

The shaft 26 is mounted in a lever 36 (Fig. 2) pivotally supported at 38 at one end thereof on a bracket 40, which extends laterally from the circular base 4 of the frame structure of the machine. The opposite end ofthe lever 36 projects laterally from the bracket 46 and is adapted for swinging movement relative to the latter, which movement is limited by a pin and slot means, generally indicated at 42. The movable end portion of the lever 36 normally is urged toward the cylinder 6 by a spring 44 connected with the lever 36 and with the bracket 40. Movement of the lever and drum 24 away from the cylinder 6 may be provided by a lever 46 which acts on said projecting end of the lever 36. The lever 46 is operated by the main cam drum in the conventional manner.

The shaft 26 is also mounted in the lever 36 for vertical or axial movement relative thereto to present the different sets of pattern disks 27 to the respective plungers. Such raising and lowering movement may be accomplished in the usual manner, by an arm 45 (Fig. l) pivotally mounted on a bracket 47 on the machine. The arm 45 is connected with a link 49 operated by the main cam drum of the machine.

As noted above, the pattern drum 24 is provided with two sets of pattern disks 27 arranged in superposed relation. The respective sets of pattern disks operate to control the needle jacks 16 according to the axial position of the pattern drum 24. In their raised or lowered position the pattern disks 27 have the cams thereon'in operative engagement with plungers 48 (Figs. 1 and 6), stacked as a unit in a guide 61 The inner ends of the plungers '48 act to control the needle jacks 16 through the usual sawtooth butts 18 thereof, one for each plunger and pattern disk 27. The action of these plungers, thus controlling the needles and jacks, is well understood in the art and need not be described in detail. These pattern disks 27 are arranged in a set to control the knitting of the pattern along the center portion of each side of the sock.

The pattern is also controlled by jack leveling or selecting cams Sit and 52 arranged in superposed relation in positions to act, respectively, on the butts 2d and 22 of each jack 16, the cam 50 acting on the butts 20 and the cam 52 acting on the butts 22.. These

cams

56 and 52 are spaced above the plungers 48, as will be apparent from Fig. l, and act independently thereof.

The usual master cam is provided in the machine, as indicated at 84. It. controls the usual knitting instrumentalities including needles 12 and the jacks 16. The master cam 84 acts to control the conventional pattern drum discs 27 on the pattern drum 24, in the knitting of solid colors. One jack leveling or selecting

cam

50, 52, acts on the low butts and the other on the high butts to pull the jacks down out of the path of the master cam to keep the needles thereof from engaging the wrap yarn, and thereby to keep knitting the solid colors and to prevent the knitting of the patterns. Then the cams t), 52, act under the control of the special discs 28 on the pattern drum 24 to provide for knitting special pattern effects. Thus any group or groups of jacks can be blanked out at any point desired.

. The double spacing of the

butts

20 and 22 on each .4 jack enables the jack leveling or selecting cams and 52 to have room for operation independently on the respective jacks. This allows for the use of two blanking

cams

56, 52, controlled by the pattern drum 24. Moreover, it provides for the use of all three groups and to control each of the jacks in the side of the sock, grouped separately or together.

The

cams

50 and 52 are carried by

selector fingers

54 and 56, respectively, slidably mounted in superposed relation in a guide bracket 65) (Fig. 2) supported above the circular base 4 of the machine and beneath the ring 8. The linger

selectors

54 and 56 are elongated, one end of each of which carries the jack leveling or selecting cam 52, while the other end thereof is provided with a notch 62 in an edge thereof in position to receive one end of a bell-

crank actuating member

64, 66.

These bell-crank

members

64 and 66 are mounted in superposed relation in positions to engage the

respective selector fingers

54, 56, and are pivotally supported at 68 upon a bracket 76 projecting outwardly from a support plate 71 (Fig. 2) on the guide bracket 66. Mounting screws may be used to secure the bracket 7i? to the plate 71, and providing for vertical adjustment of the members 6'4, 66, to obtain proper alignment thereof with the

pattern disks

28 and 30. Forward and backward ad justment relative thereto may be obtained by an adjustment of the pivot screw 68 in a slot in the plate 70. The bracket 70 may be braced by a pin 69.

One arm of each bell-crank

member

64, 66, engages the

selector finger

54, 56, in the notch 62, while the other arm thereof extends into engagement with the cams formed on the pattern disks 28 or 39, according to the axial disposition of the pattern drum 2'4.

Rotation of the pattern drum 24 thus causes swinging movement of the

respective members

64, 66, the opposite ends of which are interengaged with the

selector fingers

54, 56, to slide the latter lengthwise, and thereby move the jack leveling or selecting earns 50, 52, into and out of engagement, respectively, with the butts 2t and 22 on the jacks. Thus, the positions of the

jack leveling cams

56, 52, will be controlled by the cams on the

pattern drum disks

28 and 38. The cams on the latter can be varied, as desired, according to the pattern to be formed on the machine. The rocking movement

of'the bellcrank members

64, 66, is limited by a guide clamp 72 secured upon the bracket 76- and through which guide clamp 72 the bell-crank

members

64, 66, extend.

The bell-crank

members

64, 66, are moved to engage the pattern disks 28 anclBt] by coiled springs 73 connected therewith. They may be disengaged from the

pattern disks

28 and 30 by a bell-crank lever 74 with which a coiled spring 76 is connected at one end to a support 78 carried'by the bracket 46. The bell-crank lever 74 is pivotally mounted at 80 on the frame 2 of the machine, and is actuated by a link 82 from the main cam drum of the machine.

The main cam drum is indicated generally at 34 (Figs. 1 and 4), mounted on a drive shaft 86, power driven in a timed relation with the operation of the machine in the 48 to raise the needles 1?. for accomplishing the required knitting operation. The plungers and sawtooth butts 18 will control the movement of the jacks l6 and needles 12 to knit a pattern in each side of the sock. Additional pattern eifects are obtained by the jack leveling or selecting

cams

50, 52 operated, respectively, by the pattern disks 23 or 30, according to theaxial position of the pattern drum 24.

The respective jack leveling or selecting

cams

50 and 52 act on the high and low butts of the jacks 16 in response to the cams on the

pattern disks

28 or 30 0peratively connected therewith. These jack leveling or selecting earns 50 and 52 enable the operator to select any group or groups of needle jacks according to the pattern elfects desired. By the same set of pattern disks 27, I can very the spacing of the cams on the

respective disks

28 or 30 and obtain very substantial variations in the knitted patterns. As an example, I can use some of the three sets of jacks at different points, according to the actuation of the jack leveling or selecting

cams

50 and 52 by the

pattern disks

28 and 30.

xEach pattern disk

27, 28 and 30' has two steps, high and low, according to the positioning of the cams thereon. It is preferred that seven different disks 27 be providedinfeach set or pattern group on the drum 24, there being two sets of pattern disks spaced axially on the drum. In addition, there-are two pattern disks in each

group

28 and 30 for controlling the

jack leveling cams

50 and 52, the

respective sets

28 and 30 being at .the upper end of the cam disks 27. This provides four different ranges of control and increases the pattern range of the machine from seven to thirteen, which is a very substantial improvement in the effects obtained thereby. During the knitting of the leg of the sock,'it is desirable to knit pattern effects at any; wale of the fabric, but during the knitting of the sole thereof it is desirable to omit the patterning in the sole portions of the sock. This is accomplished by a blanking cam shown at 90 (Figs. 2 and 3), which is in position to act on the needle butts 14 to pull the needles down in proper timed relation. I

The blanking cam 90 is carried by a plunger 92 slidably mounted on a bracket 93 for axial movement. A pin and slot connection 94 limits the sliding movement of the plunger 92. The outer end of the plunger 92 is turned upward at 95 and engaged by .a bifurcated end 96 on a lever 97, which lever is pivotally supported at 98 upon a support member 99 extending upwardly from the bracket 40; The lever 97 normally is acted on by a torsion spring 100 tending to, move the plunger 92 inwardly toward the cylinder 6 and thus holding the blanking cam 90 in the path of the butts 14 of the needles, except when it is withdrawn by the action of the lever 97.

The blanking cam 90 may be withdrawn outof the path of the needles upon operation of the lever 97 by a bell-crank lever 102. The bell-crank lever 102 is pivotally supported at 104 on a support carried by the bracket 40. One arm of the bell-crank lever 102 is in position to, engage the lever 97, while the otherarm thereof is connected with a link 106 extending downwardly in the machine in guided relation with the frame thereof.

The lower end of the link 106 carries a roller or follower 108 in the path of a cam 110. While the earn 110 could be mounted on the main cam drum 84, it is preferred that these parts be disposed laterally of the frame portion 2 and that a separate cam drum 112 be provided on the shaft 86 for mounting the earn 110 and thereby operating the link 106. v a v The blanking cam is out during the knitting of the pattern. After the pattern is completed in the leg porfour courses before knitting the heel and then it falls out of operation while knitting the heel. After the heel is completed, the blanking cam 90 goes back into operation,. and comes out of operation twenty-four courses This allows the contiriued the patdisks27 in each group. I

With the ,seven steps in each group of jacks in the cylinder 6 and with the two sets of

special pattern disks

28 and 30 and the high and low buttson the jacks, the patterns can be increased to thirteen steps or more, even though the machine originally was constructed for.;only

' seven steps.

The same pattern disks can be used to make different patterns by changing the jacks so as to have the high and low butts in different relations to each other. Thus, the'high butts can'be located at the top and the low butts at the bottom, or vice versa, or these may be in staggered relation, according to the pattern desired. In setting up the pattern on the pattern drum 24,

disks

27, 28 and 30 arejarranged to correspond with the desired pattern in the usual way, except that the

special disks

28 and 30 are arranged at the top of each set of pattern disks 27. Then the pattern can be changed readily by removal of one set ofdisks and replacing it with another, or by arranging the disks in another relation to each other. This can be done very quickly, even while knitting the toe pocket, when the pattern drum would be out of operative position. 7 v

'The blanking cam 90 operates on the butts of the needles and pushes the jacks. down'below the master cam in order that the latter cannot raise the jacks. Half of the needles on the cylinder 6 are usually provided with long butts and the other half with short butts. The long butts of the needles would travel over the top of the blanking cam 90 and be engaged thereby to push the jack up, while the short butts would travel under this cam and would pullv the jack down. The addition of thejack leveling cams 50 and52 increases very appreciably-the range of patterns that are possible on the. machine. Many variations of patterns can be made from one set of pattern disks. These jack selecting earns 50 and 52 will enable the operator to select any desired group or groups of needle jacks. As an example, it is possible to use some of the three sets 'of jacks atdifferent points, or to select these in whatever combination may be desired.

An example of the patterns that are possible to be knittedon this machine is illustrated in Fig. 9, although it will be. recognized that many variations thereof are also possible. In this example the sock S is provided with a clock down the side and also with additional ornamentation, all of which are formed by using one set of pattern disks with some of the three sets of jacks at different points. The clock down the side is formed with a stagger a and with zigzag lines 12, as well as diamonds c. The range of the pattern-is increased appreciably bythe staggered disposition of separate and joined diamonds d and e, which not only increases the pattern circumferentially, but also the different types of patterns that can be produced on the seven-step ma,- chine, with a single set of cam disks which control the needle jacks. Thus the pattern in the side can go seven steps to the left of center and also seven steps to the right of center, as having different pattern effects, some of which are illustrated at d and e, outside of the center clock. Thus, it is possible to havethirteen or more steps onthe seven step machine.

The reason for having different lengths of

butts

20 and 22 on the jacks 16 will be apparent from the example of the pattern illustrated in Fig. 9. The first pattern d Inasmuch as the conventional machine has the jacks thereof arranged in seven steps, there will be seven at the right in Fig. 9 has a double row of loops which are produced by the long butts at the top of the respective jacks 16, while the center pattern at the right in Fig. 9, which has a single row of loops, is formed with onehalf short butts at the top, as indicated at 20, and the other one-half having short butts at the bottom, as indicated at 22. The last pattern on the left side has the long butts 22 at the bottom.

The jack leveling cam 50 is moved out of the path of the long butts 20 of the first pattern, and also out of the path of the butts 20 on the first half of the center pattern. Then the cam 52 moves out half way, clearing the short butts 22 on the last half of the center pattern and pulling down the long-butt jacks on the last pattern to the left. These cams i and 52 are controlled by the

pattern disks

28 and 30 which can be arranged so that the cams thereon will move the earns 50 and 52 to form the pattern at any time desired and at any point in the knitting operation.

It will be noted from the stagger a and also from the diagonal lines of the double diamond effects, that it is possible with this construction to extend each of these.

pattern effects over thirteen steps transversely of the pattern. This is a marked increase because prior machines have been limited to not more than seven steps transversely of the machine.

While the improvements have been illustrated and described in their relations to a conventional knitting machine, further details of said conventional machine are found disclosed in the Lawson et al. Patents No. 2.090,597, August 17, 1937, and No. 2,208,698, July 23, 1940.

Moreover, while the invention has been illustrated and described in one embodiment, it is recognized that variations and changes may be made without departing from the invention, as set forth in the claims.

I claim:

1. In a knitting machine having a main cam drum and knitting mechanism controlled by said main cam drum, said mechanism including needles and cooperating jacks for the respective needles, each of the jacks having longitudinally spaced butts thereon, jack leveling cams above at least some of the spaced butts and arranged to engage the butts and pull down the jacks, a pattern drum, and means actuated by the pattern drum for moving said cams.

2. In a knitting machine having a main cam drum and knitting mechanism controlled by said main cam drum, said mechanism including needles and cooperating jacks for the respective needles, each of the jacks having longitudinally spaced butts thereon, jack leveling cams above at least some of the spaced butts and arranged to engage the butts and pull down the jacks, a

pattern drum including a plurality of pattern disks, members carrying the jack leveling cams, and means actuated by the pattern disks for moving said members to operate the jack leveling cams into and out of the path of the butts on the jacks, the butts on each jack being spaced apart approximately double the Width of each butt.

3. In a knitting machine having a main cam drum and knitting mechanism controlled by said main cam drum, said mechanism including needles and cooperating jacks for the respective needles, each of the jacks having longitudinally spaced butts thereon, jack leveling cams above at least some of the spaced butts and arranged to engage the butts and pull down the jacks, a pattern drum having a plurality of pattern disks thereon, members carrying the jack leveling cams thereon, and means actuated by the pattern disks for operating said members to move the cams into and out of the path of the jack butts.

4. In a knitting machine, the combination of needles and cooperating jacks for the respective needles, each of a or the jacks having a row of butts on the lower end por tion thereof and a pair of butts at the upper end of said row of butts, a pattern drum having pattern disks thereon with cams on said pattern disks, jack leveling cams arranged for respective cooperation with the pair of butts on each jack, means actuated by the pattern disk cams for controlling the jack leveling cams, and means actuated by the pattern disk cams and cooperating with the row of butts on each of the jacks for controlling the positions of the jacks.

5. In a knitting machine having amain cam drum and knitting mechanism controlled by said main cam drum, said mechanism including needles and cooperating jacks for the respective needles, each of the jacks having a row of butts on the lower end portion thereof and a pair of butts at the upper end of said row of butts, a pattern drum having pattern disks thereon with cams on said pattern disks, jack leveling cams arranged for respective cooperation with the pair of butts on each jack for controlling the positions of the jacks, selector fingers supporting the jack leveling cams, means co operating with the row of butts on each jack for controlling the position of said jack, and means actuated by the pattern disk cams for operating the selector fingers to control the jack leveling cams.

6. In a knitting machine having a main cam drum and knitting mechanism controlled by said main cam drum, said mechanism including needles and cooperating jacks for the respective needles, each of the jacks having a row of butts on the lower end portion thereof and a pair of butts at the upper end of said rowof butts, a pattern drum having pattern disks thereon with cams on said pattern disks, jack leveling cams arranged for respective cooperation with the pair of butts on each jack for controlling the positions of the jacks, selector fingers supporting the jack leveling cams, lever members operatively connected with the selector fingers and having an operative connection with the pattern disk cams, means cooperating with the row-of butts on each jack for controlling the position of said jack, and means operatively connected with said lever members for moving the jack leveling cams out of cooperative relation with the pair of butts.

7. In a knitting machine having a main cam drum and knitting mechanism controlled by said main cam drum, said mechanism including needles and cooperating jacks for the respective needles, each of the jacks having a row of butts on the lower end portion thereof and a pair of butts at the upper end of said row of butts, a pattern drum having pattern disks thereon with cams on said pattern disks, jack leveling cams, arranged for respective cooperation with the pair of butts on each jack for controlling the positions of the jacks, selector fingers supporting the jack leveling cams thereon, means mounting said selector fingers for movement thereof to move the jack leveling cams out of the path of the pair of butts on the jacks, bell crank levers operatively connected with the selector fingers and having portions thereof in operative engagement with a pair of the pattern disks for ope ation thereby to move the jack leveling cams into and out of operative relative with the pair of butts on each jack, and means cooperating with the row of butts on each jack for controlling the position of said jack.

8. in a knitting machine having a main cam drum and knitting mechanism controlled by said main cam drum, said mechanism including needles and cooperating jacks for the respective needles, each of the jacks having a row of butts on the lower end portion thereof and a pair of butts at the upper end of said row of butts, a pattern drum having pattern disks thereon'with cams on said pattern disks, jack leveling cams arranged for respective cooperation with the pair of butts on each jack for controlling the positions of the jacks, selector fingers supporting the jack leveling cams thereon, means mounting said selector fingers for sliding movement thereof to move the jack leveling cams out of the path of the pair of butts on the jacks, bell crank levers operatively connected with the selector fingers and having portions thereof in operative engagement with a pair of the pattern disks for operation thereby to move the jack leveling cams out of operative relation with the pair of butts on each jack, means acting on'the bell crank levers for moving the selector fingers into operative relation with the pair of butts, and cam actuated means operatively connected with the bell crank members for moving the latter to disengage the disks on the pattern drum and thereby withdrawing the jack leveling cams from operative relation with the pair of butts, and means cooperating with the row of butts on each jack for controlling the position of said jack.

9. In a knitting machine, the combination of needles and cooperating jacks for the respective needles, each of the jacks having a row of butts on the lower end portion thereof and a pair of butts at the upper end of said row of butts, a pattern drum having pattern disks thereon with cams on said pattern disks, jack leveling cams arranged for respective cooperation with the pair. of butts on each jack, selector fingers supporting the jack leveling cams thereon, means mounting said selector fingers for movement thereof to move the jack leveling cams out of the path of the pair of, butts on the jacks, bell crank levers operatively connected with the selector fingers and having portions thereof in operative engagement with a pair of the pattern disks for operation thereby to move the jack leveling cams out of operative relation with the pair of butts on each jack, means acting on the bell crank levers for moving the selector fingers into operative relation with the pair of butts, and plungers operatively connected with a plurality of said row of butts on each jack to control the positions of the jacks.

g 10. In a knitting machine, the combination with a main cam drum and knitting mechanism controlled by said main cam drum, said mechanism including needles and cooperating jacks for the respective needles, each of the jacks having a row of butts connected therewith and a pair of separate butts adjacent thereto, of a pattern drum having pattern means thereon, jack levelling cams arranged for respective cooperation with the pair of butts on each jack, means actuated by the pattern means pattern disks and in positions for engagement with the V levelling cams.

References Cited in the file of this patent UNITED STATES PATENTS 546,986 Adgate Oct. 1, 1895 1,434,108 Egan Oct. 31, 1922 2,025,913 Taggart Dec. 31, 1935 2,201,716 Davis May 21, 1940 2,208,308 Lawson et a1. July 16, 1940 2,208,698 Lawson et aI July 23, 1940 2,217,022 Lawson et a1. Oct. 8, 1940 2,244,870 Green et a1. June 10, 1941 2,287,001 Lawson June 16, 1942 2,323,998 Hutton et a1. July 13, 1943 2,378,315 Minton June 12, 1945 2,378,316 Minton June 12, 1945 2,387,253 Getaz Oct. 23, 1945 2,423,989 Manger et a1 July 15, 1947 2,516,697 Haddad July 25, 1950 2,670,617 Bryant Mar. 2, 1954 2,679,737 St. Pierre 1 June 1, 1954