US953122A

US953122A - Pattern mechanism for knitting-machines.

Info

Publication number: US953122A
Application number: US44918108A
Authority: US
Inventors: Edgar C Chandler
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-08-18
Filing date: 1908-08-18
Publication date: 1910-03-29
Anticipated expiration: 1927-03-29

Description

E. G. CHANDLER.

PATTERN MECHANISM FOR KNITTING MACHINES.

APPLIOATION FILED AUG. 18, 1908.

mg m W 9m IN. M 2 ml: Q w M A Y W"? 4% W N MWN "Wofifl E. G. CHANDLER.

PATTERN MECHANISM FOR KNITTING MACHINES.

APPLICATION FILED AUG. 18, 1908.

Patented Mar. 29, 1910.

e sums-11231: a.

INVENTOR, cigar amand'r W! TNESSES TDRIIEY.

B. C. CHANDLER. PATTERN MECHANISM FOR KNITTING MACHINES.

APPLICATION FILED AUG. 1a, 1908.

a sums-3min a.

Q 0 m I Q Q0 H k r-s\ i g d g 1 F 5 n i 0 0 I N u 3 WITNESSES: INVENTOR: 7 7"? 6.

flg 0,11% Ed ar m C fiancZZer E. C CHANDLER.

PATTERN MECHANISM FOR KNITTING MACHINES.

APPLICATION FILED AUG.18, 1908. 953,122. Patented Mar. 29, 1910.

UESHEETB-SHEET 4.

WITNESSES INVE N TOR:

1771' 1529a; UC fiand Zer E. G. CHANDLER. PATTERN MECHANISM FOR KNITTING MACHINES.

APPLICATION FILED AUG.18, 1908.

Pat ented Mar.

6 SHEETS-SHEET 6.

VA y .IIIVENTOR: 79427" QCYzandler E. G. CHANDLER.

PATTERN MBGHANISM FOR KNITTING MACHINES.

APPLICATION FILED AUG. 18, 1908.

Patented Mar. 29, 1910.

6 SHEETS-SHEET 6.

INVENTOI? fl i'yar 6f (Vzandlar KAT.

JTTOHN r UNITED STATES PATENT OFFICE.

EDGAR G. CHANDLER, 0F YHILADELP'HIA, PENNSYLVANIA.

PATTERN MECHANISM FOR IK1\TI'1"I".\'.'.l TG-IBIAL'FHIN'IFJB.

Specification of Letters Ilatont.

Patented Mar. 29, 1910.

Application filed August 18, 1908. Serial No. 449,181.

To all whom it may concern:

Be it known that I, EDGAR G; CHANDLER, citizen .of the United States, residing at Philadelphia, in'the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Pattern Mechanism for Knitting-Machines, of which the following is a specification.

The object of this invention is to provide in a knitting machine a simple and efficient construction and organization of arts whereby various different pattering. e ects may be produced in the product of the machine by moving different threads into and out of operative relation to the needles, to be knitted thereby, at predetermined intervals; by causing at redeterminedintervals certain of the need es to produce tuck stitches while the remaining needles produce the regular stitches; and by causin the needles to cease the production 0 the tuck stitches at predetermined intervals.

The invention consists in the novel construction and combinations of parts which will be hereinafter fully described and claimed.v a

In the drawings :--Figure 1 is a plan view of a knitting machine embodying m invention. Fig. 2 is a side elevation thereo Fig. .3 is a longitudinal section, as on the line (2-4 of Fi 1'. Figs. 4 and 10 are sections as on the lines b?) and k-Ja of Fig. 1, respectively. Fig. 5 is a section as on the line cc of Fig. 1. Fig. 6 is a view of the pawl raising arm, detached. Fig. 7' is a section as on the line d--d of Fig. 1. Fig. 8 is a section as on the line ee of 1. Fig. 9 is a section as on the line f-f of ig. 1. Fig. 11 is a plan view of a portion of the thread changing mechagism, enlarged. Fig. 12 is a section as on th line g-g of Fig. 11. Fig. 13 is a section as on the line h h of Fig. 11. Fig. 14 is a development of a portion of the interior of the cam cylinder showing one of the two sets of knitting cams and one of the adjustable needle-raising cams. Fig. 15 is a horizontal section as on the line 'i-'i of Fig. 2.

The main frame ofthe machine comprises a bed plate 1, and a suitable supporting standard 2 therefor. Mounted in suitable bearings in the standard 2-is the main driving shaft 3, the outer end of which is provided with the usual fast and loose pullevs l and 5, by means of which power may be s aft 3 is provided with a beveled gear wheel 6 which engages the teeth of a similar gear wheel 7 formed on the cam c linder 8 which is rotatably mounted in the bed plate 1. Within the cam cylinder 8 is theneedle cylinder 9, provided with the usual vertical grooves into which are fitted the needles 10 of usual construction. The cam cylinder 9 carries the usual cams for verticall reci rocating the needles for the production 0 the stitches in the common and well known a plied to the shaft. The inner end of the manner. In the present invention two sets a of knitting cams of usual construction are carried by the cam c linder and on opposite sides thereof, as at and B, whereby, during the rotation of the cam c linder 8 the needles will be actuated to pro uce two rows of stitches for every revolution of the cam cylinder. Each set of knitting cams A and B is like the construction shown in Fi 12.

The construction and operation 0 the knitting cams for the roduction of the stitches. are common an well known and .no detailed description or illustration thereof is deemed necessary herein.

In carrying out my invention, I employ an automaticall cont-rolled mechanism to raise certain o the needles so that their latches will esca e their en aged loops of thread while the atches of ot er needles are permitted to remain in their engaged loops of thread to produce tuck stitches duringthe knitting operation, to control the attern effect of the fabric bein knitted; an I also emplo an automatica y operated threadchanglng mechanism for the knitting cams A, by means of which either of two threads of different colors may be fed to the needles to control the pattern effect of the fabric bein knitted.

T read-changing mechanism:Rising from the cam cylinder 8 on opposite sides thereof, are

posts

18 and 19, between which extends a frame'QO in which is formed a ring 21 which surrounds the needles 10 and forms the usual guard for the latches thereof. This ring 21 is provided'with a threadguiding eye 22 through which a thread is irected to the needles adjacent the knitting cams B. One side of the frame 20 extends upwardl adjacent the knitting cams A and is rovi ed with two thread-guiding arts or evers Q3 and 24:, which are arranged side by side within an opening in the frame 20,

the

levers

23 and 24 being separated by a thin plate 25. The upper portions of the

levers

23 and 24 are pivota 1y mounted, on a in 26 on the frame 20, and the lower ends of the

levers

23 and 24 are provided with thread-guiding

eyes

27 and 28 respectively, each of which is adapted to be moved to an active position outwardly of the circular series of needles to direct its thread thereto adjacent the knitting cams A, and each of which is adapted to be moved to an inactive position inwardly of the circular series of needles to prevent its thread being engaged thereby during the knitting operation. The thread-guiding

eyes

27 and 28 are adapted to receive threads of different colors, and the

levers

23 and 24 are adapted to be operated to move the

eyes

27 and 28 to the active and inactive positions in alternate succession, to change the color of the thread bein delivered to the knitting cams A, as will ereinafter appear. The upper ends of the

levers

23 and 24 are connected by

springs

29 and 30 respectively to the frame 20. The

springs

29 and 30 extend through an opening in a disk 32 hereinafter described, the tendency of the springs being to draw down the u per ends of the levers and move the threa guiding eyes in the lower ends thereof to the inoperative position, inwardly of .the circular series of needles. The lower faces of the upper ends of the levers 23 v and 24 are adapted to be engaged by a cam 31 projecting from the disk 32 which is rotataby mounted on a screw 33 on the frame 20.

Fitted to guideways in the frame 20, directly beneath the disk 32, are two

reciprocative bars

34 and 35, the outer ends of which converge toward and overlap each other as shown, the outer end of the bar 35 being located above the outer end of the bar 34. The bar 34 is arranged on one side of the screw 33 and the bar 35 is arranged on the other side thereof. The bar 34 is connected to the disk 32 by a in 36 extending through a slot 37 in the disk, and the bar 35 is connected to the disk 32 by a pin 38 extending through a slot 39 in the disk. The

bars

34 and 35 are adapted to be moved in and out through their guideways so as to project the outer ends thereof beyond the frame 20, and when one bar is'moved outwardly to project its end outwardly of the frame 20, the other bar is moved inwardly by the operation of the disk.

When the parts are in the position shown, the outer end of the bar 34 is projected be- "yond the frame 20, and the upper end of the lever 24 is held in the raised position by the top of the cam 31 a ainst the action of its spring 30, thus holdlng the thread-guidin e e 28 in the active position outwardly o t e circular series of needles, and the upper end of the lever 23 is drawn downwardly by the action of its spring 29 which holds the thread-guiding eye 27 in the inactive position inwardly of the circular series of needles. In this position of the

levers

23 and 24, the thread-guiding eye 28 in the active position is delivering thread tovthe needles to be acted upon thereby. When, however, it is desired to discontinue the knitting of the thread fed by the eye 28 and to knit the thread fed by the eye 27, the lever 23 is first moved to a position outwardly of the needles adjacent the position of the lever 24, to bring the thread-guiding eye 27 to the active position, and the lever '24 is then moved to a position inwardly of the needles adjacent the position previously occupied by the lever 23, to bring the threadiding eye 28 to the inactive position. This 18 accomplished by moving the bar 34 inwardly which causes the pin 36 to engage the wall of the slot 37 and rotate the disk 32 a partial revolution, causing the wall of the slot 39 to engage the pin 38 and move the bar 35 outwardly to project its outer end beyond the frame 20 in a position above the position previously occupied, by the outer end of the bar 34. During the initial movement of the disk 32 by the bar 34, the upper end of the lever 23 is acted upon by the inclined end of the cam 31, and raised to a position adjacent the raised end of the lever 24, bringing the thread-guiding eye 27 to the active position outwardly of the needles; and as the disk 32 completesits movement by the bar 34, the upper end of the lever 24, under the influence of its spring 30, rides down the other inclined end of the cam 31 and moves the thread-guiding eye 28 to the inactive position inwardly of the needles, while the upper end of the lever 23 remains upon the top of'the cam 31 to retain the thread-guiding eye 27 in the active position. lVhen it is desired to again change the thread'being delivered to the needles through the

eyes

27 and 28, the bar 35 is moved inward; which, through its pin-and-slot connection with the disk 32, returns the disk 32, its cam 31, and the bar 34, to the position shown, thus raising the upper end of the lever 24 and lowering the upper end of the lever 23, and bringing the thread-guiding eye 28 back into active position. and moving the thread-guiding eye 27 to the inactive position.

It will be clear, from this description, that when a change of thread delivered to the knitting cams A is desired, it may be effected by moving inwardly the outer end of the

bar

34 or 35 which is projecting beyond the frame 20. The

bars

34 and 35 are adapted to be moved inwardly in alternate succession and at predetermined intervals, to efiectthe changing of the thread, by the action of a horizontally arranged cam plate 40, movable vertically into the path traversed by the 60 J I Stitch tucking mechanism :Directlyi' in --rear of' the knitting cams B' is a needle-opersis outer end of either the bar 34 or the bar 35 during the rotation of the cam cylinder when either of said bars is in the outer position. The inner edge of the cam plate 40 is provided with a central portion 41, concentric with the cam cylinder, an end portion 42 beveled outwardly from the central portion 41, and an end portion 43 beveled inwardly from the central portion. When either of the

bars

34 and 35 acts upon the cam plate 40 during the rotation ofthe cam cylinder, the beveled portion 42 first actuates the bar sufliciently to cause the cam 31 to move the inactive thread-guiding lever to the active position, without moving the. active threadguiding lever to the inactive position. Therefore, during the movement of the bar over the central portion 42 of the cam plate 40, the thread-guiding eyes of both

levers

23 and 24 are in the active position. When the 'bar engages the beveled portion 43 of. the cam, it completes its inward movement, and at the same time completes the movement of the cam 31 to permit the spring of the previously active lever to'move its thread-guiding eye into the inactive position. The cam plate 40 is mounted on the upper end of a vertically movable rod 45, which is fitted to perforated projections on a bracket 44 rising from the bed plate 1. The cam plate -10 and the rod 45 are prevented from turning about the axis of the rod 45 by a pin 46 projecting downwardly from the plate 40 parallel to the rod 45, and slidingly fitted to an opening in the bracket 44. The rod 45 is provided with a lateral projection 47 between which and the top of the bracket is interposed a spring 48,, which encircles the rod 45 and bears against the upperportion of the bracket 44 and the lateral projection 47 in a manner to depress the rod 45.

Extending vertically through the projection 47 is an adjustable screw 49 the lower end of which rests uponthe free end of an arm 50 projecting fixedly from a shaft. 51 which is mounted in bearings in a bracket 52 projecting from the bed plate 1. This shaft 51 has fixed thereto one end of an arm 53, which extends from the shaft substantially parallel to the arm 50. By automatic mechanism hereinafter explained, the

arms

50 and 53 are raised and lowered, thus raising and lowering the rod 45 and therewith the cam plate 40 into and outof each of the paths traversed by the outer ends of the

bars

34 and 35, to control the threadohanging mechanism for the production of different pattern effects in the fabric being knitted.

sting wheel 54 which inclines upwardly in a direction away from the knitting cams,

and directly in rear of the knitting cams A is a needle-operating wheel which inclines upwardly in a direction away from the knitting cams. The

wheels

54 and 55 are mounted to rotate on

pivot studs

56 and 57 respectively, carried by the cam cylinder 8. The edge of each wheel is provided with suitable notches adapted to en age the butts of certain predetermined needles and raise them so that their latches will escape their engaged loops of thread after they have been acted upon by the preceding knitting cams, and each wheel is also provided with slots between the notches for the passage therethrough of the butts' of the needles not raised by the wheel. The latches of the needles not raised by the

wheels

54 and 55 are thus permitted to remain in their engaged loops of thread, thus causing certain needles to tuck during the knitting oper ation' and produce attern effects upon the fabric being knitted Directly in rear of each

wheel

54 and 55 is a pattern eontrollin needle-operating cam 58. which is formed on the inner end of a radially extending bar 59. The bar 59 is pivotally mounted, as at 60, on a bracket (31 projecting from and carried by the cam cylinder 8. The bars 59 are adapted to be rocked on their pivots by mechanism hereinafter described, to ralse and lower the cams 58, and the cams 58 are held in either their raised or lowered position by the action of a flat spring (32 secured to the brackets 61 and engaging V-shaped lateral faces of the cams 58. When the cams 58 are in the lowcred position, the butts of the needles are unaffected thereby. \Vheu, however, the cams 58 are in the raised position, they act upon the butts of all the needles including those not acted upon by the notches of the preceding

wheels

54 and 55 and raise said needles so that their latches also escape their engaged loops of thread. Thus it will be seen that when the cams 58 are in the raised position, all of the 'needles, after they have been acted upon b the knitting cams A and B will be raised sot at their latches will escape their engaged loops of thread, and that therefore no tucking will take place; and that when the cams 58 are in the lowered position, the needle butts will be unaffected thereby and certain needles-controlled by the

wheels

54 and 55 will'be caused to tuck as previously explained. Thus-the raising and lowering of the cams will control the tucking operation; or, in other words, when the cams 58 are in the raised position, no tucking will take place, and when the cams are in the lowered position the tucking operation will take place.

of a spring 68, one end of which is connected to the arm 67 and the other end of adapted to be engaged by two reciprocative are adapted to be engaged 54 and 55 ma be removed from the machine and other wheels having differently arranged notches to engage different needles may be substituted therefor. Thus a great variety of pattern effects, due to the tucked stitches, may be produced in the knitted fabric ,by the employment of different wheels having difierently arranged needleengaging notches.

The outer ends of the cam bars 59 are

ins

62 and 63, arranged one above the other.

hese pins are adapted to be projected in alternate succession intothe path traversed by the outer ends of the cam bars, andthe outer ends of the cam bars are provided with upper and lower beveled surfaces which by the

pins

62 and 63 to raise and lower the outer ends of the bars 59, and at the same time raise and lower the cams 58 carried by the inner ends thereof. The pin 62 is so-positioned with relation to the path of travel ofthe outer ends of the bars 59, that when it is projected into the path thereof it will act upon the upper beveled faces of the outer ends of the bars to depress them and raise the cams 58. And the pin 63 is so positioned with relation to the path of travel of the outer ends of the bars 59 that when it is projected into the path thereof it will act upon the lower beveled faces of the outer ends of the j bars to raise them andlower the cams 58. The

pins

62 and 63 are fitted to horizontal openings inthe bracket 44 and their outer ends are pivotally connected to the upper and lower ends of a plate or lever 64 which is pivotally connected to the bracket 44 as at 65, centrally between the two

pins

62 and 63. The central portion of the plate or lever 64 extends outwardly from the bracket 44 and is connected by an upwardly extending link 66 vto a horizontally arranged arm 67 which is pivotally mounted on the shaft 51 hereinbefore mentioned. The free end of the arm 67 is drawn downward by the action which is connected to the bracket 44. From this construction it will be seen that when the arm 67 is raised against the action of the spring 68 the link 66 will act upon and rock the plate or lever 64 in a manner to withdraw the pin 63 from the path of the cam bars 59, and project the pin 62 into the path of the cam bars 59; and when the arm 67 is lowered by the action of the spring 68, the link will act upon and rock the plate or lever 64 in a manner to withdraw the pin 67 from the path of the cam bars 59 and project the pin 63 into the path of the cam bars; so that when the pin 63 is projected inwardly the cams 58 will be lowered, permitting the production of the tucked stitches; and when the pin 62 is projected 1 portion of the peri carried by the drums and the arm 67 is provided with two downinwardly the cams 58 will be raised to cause the needles to cease the production of the tucked stitches.

By automatic mechanism hereinafter eX plained, the arm 67 is raised and lowered,

to thus control the production or non-production of the tucked stitches.

utomatio mechanism for controlling the thread-changing mechanism and the stitchtuclcmg mechanism.-Directly beneath the arms 50 and 53- of the thread-changing.

mechanism and the arm 67 of the stitchtucking mechanism, are two independently rotatable members which, in the present embodiment of my invention, are two

drums

69 and 70. The drum 70 is fixed to a shaft 71 which is mounted in bearings projecting from the bed plate 1, and the drum 69 surrounds and is rotatably mounted upon the drum 70. The drum 69 is only about one half the length of the drum 70; so-that a hery of the drum 70 will be exposed whl e the entire periphery of the drum 69 is exposed. The

arms

50 and 53 are provided with

downward projections

72 and 73 respectively, which are adapted to move into and out of the paths traversed by projecting

blocks

74 and 75 69 and 70 respectively;

ward projections

76 and 77, which are adapted to move into and out of the paths traversed by projecting

blocks

78 and 79 carried by the

drums

69 and 70 respectively. Thus it will be seen that when the

drums

69 and 70 arerotated independently of each other, the thread changing mechanism will -be controlled by the

arms

50 and 53 being raised and lowered by the operation of the

blocks

74 and 75; and that the stitch-tucking mechanism will be controlled by the arm 67 being raised and lowered by the operation of the

blocks

78 and 79. The

drums

69 and 70 are provided with screw-threaded holes for the reception of screws to secure other blocks to the drums in the path of the

blocks

74, 75, 78, and 79, or for changing the location of these blocks with respect to each other and the

drums

69 and 70, so that they will act upon the

arms

50 and 53 and the arm 67 at-different times with relation to the movement of the drums.

By employing two independently rotatable members or drums and by independently controlling both the thread-changing mechanism and the stitch-tucking mechanism by each of said drums, I am enabled to obtain a much wider range of variation in the pattern of the fabric being knitted than if a single drum were employed.v

I shall now describe the mechanism for actuating the drums independently of each other at certain intervals during the operation of the machine.

Formed on or secured to one end of the I,

inner drum is a ratchet wheel 80, and formed on or secured to one end of the outer drum adjacent the ratchet wheel 80 is a ratchet wheel 81. wheel 80 are directed opposite to the teeth of the ratchet wheel 81 so that they and the drums ma y be rotated in" opposite directions. Engaged with the

ratchet wheels

80 and 81 are

pawls

82 and 83 1'especti\-'el v, the pawls 8'2 and 83 being carried by the upper end of a lever 84 fulcrulned on the shaft 71. The lower end of the lever 84 is connected by an arm 85 to a wheel 86 away from the center thereof. whereby, during the rotation of the wheel 86, the. lever 89 will be rocked back and forth. The wheel 86 is carried by a shaft 87 having its bearings in the main frame, and the shaft 87 is actuated from the main shaft 3 by the interposed gear wheel 88 and pinion 89. Thus, during theoperation of the machine, the lever 84 will be rocked back and forth. The movement of the upper end of the lever 84 in one direction will cause the pawl 83 to engage a tooth of the ratchet wheel 81 and advance the drum 69 the distance of one tooth, and the movement of the upper end of the lever 84 in the reverse direction will cause the pawl 82 to engage a tooth of the ratchet wheel 80 and advance the drum 70 the distance of one tooth in an opposite direction to the movement of the drum 69.

In order to disengage the pawl 82 from the ratchet wheel 80 so that it will discontinue to advance the drum 7 0 at certain predetermined intervals. for a purpose hereinafter explained. I provide an arm 90, one end of which is pivotally mounted on a bracket 91 on the bed plate 1, and the, other end of which extends to a position directly beneath the path of movement of the pawl 82, so that when the arm 90 is raised, the nose of the pawl 82 will ride over the arm and be prevented from engaging the teeth of the ratchet wheel 80, and when the arm 90 is lowered the pawl 82 will be permitted to drop into engagement-with said teeth. The arm 90 is raised at certain intervals by pins 92 which project, from a circular series of screw-threaded holes 93 in the face of the ratchet wheel 80 into which the pins 92 are screwed. The t' ning of the disengagement of the pawl 82 om the ratchet wheel 80 with relation to/i ts movement may be controlled and 1' gr ated by employing a greater or less numb of pins 92 and by changing their pyofions about the circular series of openi s 93. After the arm 90 has been raised y one of the pins 92, it is held in the raised 6, position by a latch arm 94 provided with a shoulder 95 adapted to engage a lateral projectiogl 96 on the arm 90. The lower end of the latch arm 94 is fixed to a rock shaft 97 which is mounted in hearings in brackets depending from the bed plate, 1.' The upper The teeth of the ratchet end of the arm 94 is drawn normally toward the projection 96 by a spring 98, one end of which is connected to the arm 94 and the other end of which is connected to a projection 99 risin from the arm 90 adjacent the pivot thereo This spring 98 also tends to move the free end of the arm 90 downwardly from engagementwith the pawl, 82. As the arm 90 is being raised by a pin 92, the arm does not raise the pawl 82 from the tooth of the wheel 80 with which it is then engaged, but it is raised into position to prevent the pawl dropping into engagement with the next succeeding tooth. This being done, the spring 98 draws the latch arm 94 into en gagement with the projection 96 on the arm 90 to maintain the arm elevated while the pin 92, which raised the arm 90, moves from engagement therewith before the wheel 80 comes to rest, so that the arm 90 may drop from the pawl 82 when the arm 90 is released by the latch arm 94.

When the shoulder 95 is in enga ement with the projection 96, and the pawl 82 is out of engagement with the ratchet wheel 80, and it is desired to permit the pawl 82 to drop into engagement with the ratchet wheel 80, the shaft 97 is rocked to disengage the'latch arm 94 from the projection 96, thus permitting the arm 90 and pawl 82 to drop. The latch arm 94 is thus operated at certain predetermined intervals by the following mechanism :-One end of the shaft 97 extends outwardly and is provided with an arm 100 the free end of WlllCh is provided with a dog 101 arranged directly over a pattern chain 102 which passes over a sprocket wheel 103 on a shaft 104 which is mounted to rotate in a suitable bearing. The lower end of the chain 102 passes around a weighted, rooved wheel 105, which is supported by t in chain. The links of the chain, at certain intervals, are provided with projections 106 which, as they pass the free end of the arm 100 during the rotation of the sprocket wheel 103, are'adapted to engage the dog 101 and raise the arm 100 in a manner to rock the shaft 97 and disengage the latch arm 94 from the pawl-engaging arm 90 and return the awl 82 into enga ement with the sprocket wlieel 80. The sha t 104, and therewith the sprocket wheel- 103, is continuously and slowly rotated by a wheel 107 on the shaft 104, the periphery of the wheel 107 being provided with small comb-like rojections which are engaged by the fa ric (shown by dot-and-dash lines) which, as 1t passes from the needles to and between a air of take-up rollers 108, engages the ro- JQCtlOIlS and rotates the wheel 107. he take-up rollers 108 are journaled in a frame 109 one end of which is pivotally mounted on a shaft 110 carried by brackets depending rom the bed plate. The shaft of one take-up roller 108 is provided with a gear wheel 111 which is engaged by a pinion 112 on one end of a/shaft 113 journaled in the frame 109. T1 other end of the shaft 113 is provided zf ith a grooved pulley 11 1 around which passes a belt 115 which also passes around a grooved pulley 116 on the main driving shaft 3.

During he knitting is drawry from the needles by the weight of the free" end of the frame 109, which is supported by the fabric engaging the take-up rollers 108. As the frame 109 moves downwardly in drawing 'the fabric from the edles, the frictional engagement of the ,belt 115 with the wheel 114; increases until "itis sufiicient to turn the shaft 113 and therewith the take-up rollers 108 in a manner tofeed the fabric downwardly between said rollers, thus raising the free end of the frame 109 and decreasing the frictional engagement of the belt 115 with the pulley 114 until it is insufficient to rotate the take-up rollers; whereupon the free end of the frame 109 again moves downwardly until the frictional engagement of the belt 115 with the pulley 11 1 is again sufficient to cause the actuation of the take-up rollers 108. Thus the free end of the frame 109 is slightly raised and lowered during the formation of the-fabric. Backwardmotion of the takeup ted by a pawl 117 pivote rollers is preven to the shaft 10 and engaging the gear wheel 111 in a manner to permit forward motion thereof and prevent backward mo-- tion thereof. Thus it will be seen that after each time the pawl 82 has been rendered inoperative, by the arm 90 engaging the latch arm 9%1, the pawl 82 may be rendered operative or returned into engagement with the ratchet wheel 80 at a predetermined period controlled by a projection 106 of the chain 102 at a predetermined period of the operation of the machine.

From the foregoing description it will be seen that during the operation of the machine, the pawl 80 remains constantly in engagement with the ratchet wheel 81 while the pawl 82 is moved into and out of 0 erative engagement with the ratchet whee 80 at predetermined intervals under the control of the pins 92 and the projections 106 of the pattern chain 102.

By this construction I am enabled to greatly vary the designs of the product of the machine by not only changing the relation of the

blocks

74, 7 5, 78 and 79 to each other upon the drums, 69 and 70, but also by actuating the drum 69 only at certain predetermined intervals which changes the timing of the movement of the

blocks

74 and 7 8 carried by the drum 69 with relation to the movement of the blocks 7 5 and 79 carried by the drum 70. y Y

I claim 1. In a knitting machine, the combination operation, the fabric of the .needles, their 'su port, the cam cylinder, actuatin means or-the'cam cylinder, means carrie by the cam-"cylinder to actuate the'needles to produce's'titches; two independently rotatable members, means for rotating said members independently of each other, a thread-feeding part carried by the cam cylinder, and means controlled by each of said members for rendering said thread feeding part operative and inoperative at predetermined intervals.

2. In a knlttlng machine, the combination of the needles, their support, the cam cylinder, actuating means for the cam cylinder, means carried by the cam cylinder to actuatethe needles to roduce stitches, two independently rotatab tating said members independently of each other, a thread feeding part carried by the cam cylinder, means controlled by each of said members for rendering said thread feeding part operative and inoperative at predetermined intervals, a needle operating part, and means controlled by each of said members for moving said needle operating part into and out of operative position.

In a knitting machine, the combination of the needles, their support, the cam cylinder, actuating means for the cam cylinder, means carried by the cam cylinder to actuate the needles to produce stitches, two independently rotatable members, means for rotating said members independently of each other, a thread changing mechanism, and means controlled by each of said members for operating the thread changing mechanism.

4. In a knitting machine, the combination of the needles, their support, the cam cylinder, actuating means for the cam cylinder, means carried by the cam cylinder to actuate the needles to produce stitches, two independently rotatable members, means for rotating said members independently of each other, a thread changing mechanism, means controlled by each of said members for operating the thread changing mechanism, a needle operating part, and means controlled by eachof said members for moving said needle operating part into and out of operative position.

5. In a knitting machine, the combination of the needles, their support, the cam cylinder, actuatin means for the cam cylinder, means carrie by the cam cylinder to actuate the needles to produce stitches, means coacting with the knitting instruments to affect the character of the fabric, two independently rotatable members, means for ro-- tating said members, independently of each other, and pattern controlling means carried by each of said members for operating the hird named means.

6. In a knitting machine, the combination of the needles, their support, the cam cyline members, means for roand pattern controlling means carried by each of said members for operating the third named means. X

r 7. In a knitting machine, the combination of the needles, their su port, the cam cylin der, actuating means or the cam cylinder,

' means carried by the cam cylinder to actuate the needles to produce stitches, means coacting with the knitting instruments to affect the character of the fabric, two independently rotatable members, means for rotating said members independently of each other, including a pawl and ratchet wheel, means for disengaging the pawl from the ratchet wheel, a pattern chain, means for supporting and actuating said chain, means operated by the pattern chain for returning the pawl into engagement with the ratchet wheel, and pattern controlling means carried by each of said members for operating the third named means.

8. In a knitting machine, the combination of the needles, their support, the cam cylinder, actuatin means for the cam cylinder, means carried by the cam cylinder to actuate the. needles to produce stitches, means coacting with the knitting instruments to affect the character of the fabric, two independently rotatable members, means for rotating said members independently of each other, including a pawl and ratchet wheel, means for disengaging the pawl from the ratchet wheel, a pattern chain, means for supporting and actuating said chain, a

pivoted arm for raising said pawl from engagement with said ratchet'wheel, means for raising said arm to engage and raise said pawl from enga ement with said ratchet wheel, a latch to old said arm in the raised position, means operated by the pattern chain for operating said latch to release said arm, and attern controlling means carried by each of said members for operati g the third named means.

9. In a knitting machine, the comb nation 'ofthe needles,,their sufpport, the cam cylinder; actuatin means or the cam cylinder,

means carrie 'by the cam cylinder to actuate the needles-to produce stitches, means c0- including a pawl and ratchet whee acting -with" the knitting instruments to affect the character of the fabric, a rotatable member, means for rotating said member,

1, means for disengagmg the pawl from the ratchet wheel, means'for feeding the fabric from the needles, a fabric-operated wheel in the path of the fabric and rotated thereby, a pattern chain, means operated by the fabric-operated wheel for supporting and actuating said chain, means operated by the pattern chain co-acting with the knitting instruments to affect the character of the fabric, including a pawl and ratchet wheel; means for disengaging the awl from the ratchet wheel, means 'for ceding the fabric from the 'needles, a fabric-operated wheel in the path of the fabric and rotated thereby, a pattern chain, means operated by the fabric-operated wheel for supporting and actuating said chain, means operated by the pattern chain for returning the awl into engagement with the ratchet wheel? and attern controlling means carried by each of said members for operating the third named means.

11. In a knittingmachine, the combination of the needles, their support, the cam 9 cylinder, actuatin means for the cam cylinder, means carrie by the cam cylinder to actuate the needles to produce stitches, means coacting with the knitting instruments to affect the character of the fabric, two independently rotatable drums, pattern-controlling means carried by said drums to operate the third named means, means for rotating said drums independently of each other including a pawl and a ratchet wheel, a pivoted arm for raising said awl from engagement with said ratchet w ieel, and means carried by the ratchet wheel for en aging and raising .said arm to engage anc raise said pawl rom engagement with the ratchet wheel.

12. In a knitting machine, the combination of the needles, their support, the cam cylinder, actuating means for the cam cylinder, means carried by the cam cylinder to actuate the needles to produce stitches, means coactin with the knitting instruments to affect t e character of the fabric, two in dependently rotatable drums, attern controllin means carried b sai drums for operating the third named means, means for rotating said drums independently of each other, including a pawl and a ratchet wheel, means actuated by the ratchet wheel for disengaging the awl from'the ratchet wheel, a pattern cham', means for supporting and actuating said chain, and means operated by -the pattern chain for returning said pawl into engagement with the ratchet wheel.

cylinder, actuating means for the cam cylby the cam cylinder to inder, means carrled actuate the needles to produce stitches, thread;t'eeding parts carried by the cam cylinder, an operating cam for said mechanism, two independently rotatable drums,

means for rotating said drums independently of each other, adjustablepatterning parts carried b each of said drums, and means controlle by the patterning parts of each of said drums for moving said cam into position to act upon the thread-feeding mechanism.

15. In a knitting machine, the combination of the needles, their support, the cam v cylinder, actuating means for the cam cylinder, means carried by the cam cylinder to actuate the needles to produce stitches,

thread feeding parts carried by the cani cylinder, an operating cam for said parts, a rotatable drum, means for rotating the drum, adjustable patterning parts carried by the drum, means controlled by patterning parts of the drum for moving said cam into position to act upon the thread feeding mechanism, a pattern controlling, needle operating cam, and means controlled by other patterning parts of the drum for operating the,needle operating cam.

16. In a knitting machine, the combination of the needles, their support, the cam cylinder, actuating means for the cam cylinder, means carried by the cam cylinder to actuate the needles to produce stitches, thread-feeding parts carried by the cam cyl inder, an operating cam for said parts, two independently rotatable drums, means for rotating said drums independently of each other, adjustable patterning parts carried by each of said drums, means controlled by patterning parts of each of said drums for moving said cam into position to act upon i the thread-feeding mechanism, a patterncontrolling, needle-operating cam, and means controlled by other patterning parts of each of said drums for operating the needle-operating cam.

In testimony whereof I atfix my signature in presence of two witnesses.

EDGAR C. CHANDLER, Witnesses:

WM. H. Srurrr, A. V. Gnonrn.