US1955594A - Apparatus for the production of horizontal stripes on the circular type knitting frame - Google Patents

Apparatus for the production of horizontal stripes on the circular type knitting frame Download PDF

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US1955594A
US1955594A US467234A US46723430A US1955594A US 1955594 A US1955594 A US 1955594A US 467234 A US467234 A US 467234A US 46723430 A US46723430 A US 46723430A US 1955594 A US1955594 A US 1955594A
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cam
yarn
attachment
wheel
path
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US467234A
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Milner Emil
Walter Frank
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CONTINENTAL MILS Inc
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CONTINENTAL MILS Inc
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B13/00—Circular knitting machines with fixed spring or bearded needles, e.g. loop-wheel machines

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  • This invention relates to an attachment for circular knitting machines and has reference particular to certain instrumentalities which cooperate with the regular knitting elements to produce a horizontal stripe at predetermined space intervals throughout the knitted fabric.
  • the object of our invention is to provide an attachment which is readily applicable to a circular knitting machine for th purpose of introducing a new yarn into the fabric being knitted, the new yarn being knitted in for one or more rows while the old yarn is held in readiness to again take its place in the needles immediately the new yarn has completed its row of stripes.
  • a further object of this invention is to provide a mechanism of this character which is enioient in operation and extremely easy to adjust for different knitting gauges.
  • Figure 1 is a side elevational view of the horizontal striper
  • Figure 2 is a substantially horizontal sectional view of the striper taken on lines 2-2 of Figure 1
  • Figure 3 is an end elevational View of the striper
  • Figure 4 is a top plan view of.
  • Figure 5 is a side elevaticnal view of the cam setter;
  • Figure 6 is a substantially longitudinal sectional view or" the cam setter taken on lines 6-5 of Figure l;
  • Figure 7 is a front elevational view of a am carried by the circular needle table for operating the care setter;
  • Figure 8 is a perspective view of the circular needle table and the cam attachments for operating the striper attachrnent;
  • Figure 9 is a substantially transverse sectional View of the needle table showing the cam attachment for operating the cutter and yarn holder in the striper attachment;
  • Figure 10 is a perspective view of the side of the striper attachment showing the parts in a position ready to introduce the new yarn and begin the stripe;
  • Figure 11 is a top plan elevational view of the same;
  • Figure 12 is a view of the parts as illustrated in Figure it;
  • Figure 13 is a view similar to Figure 19 with the parts moved to their second position;
  • Figure 14 is a top plan View of the parts in tl e position shown in Figure 13;
  • Figure 19 is a perspective view of the striper in the fourth position of its parts;
  • Figure 20 is a top plan view thereof; and
  • Figure 21 is a front elevational view of the needle bed of the parts in the fourth position.
  • 10 denotes the cylinder of a knitting machine and 11 the needle plates which are clamped to the cylinder 10 in their upright positions by means of clamp screws 12.
  • a back stand ring 13 is fixed in position on the cylinder 10 to support the backs of the bearded spring needles 14, the outer sides thereof being clamped in position by the needle plates 11.
  • the needle cylinder 10 revolves on a bed plate
  • the several instrumentalities constituting the present attachment are brought into successive operation by means of a series of cams mounted on the revolving cylinder 10 and needle plates 11.
  • the first instrument to be effected is the star wheel cam setter, illustratively exemplified in Figures l to 7, inclusive, which comprises a base plate 15 fixed on the bed plate of the machine and provided with three upright posts 16, 1'? and 18, the latter being disposed on a radial line of the cylinder 10.
  • the rear post 16 is higher than the others and is provided at its upper end with a bearing in which one end of a stud shaft 19 is rigidly fixed, the outer end of the shaft carrying one end of an inclined arm 20.
  • a link plate 22 having a longitudinally disposed central slot 23 to loosely embrace the shaft 19, the upper end of the link 22 having a roller 24 mounted on a screw stud 25 projecting from one side of the link.
  • the lower end of the link 22 is pivotally connected to one end of a lever 26, which oscillates on a stud 27 and which on its opposite end is provided with an upright transverse shoe 28.
  • This shoe 28 is adapted to engage under the star wheel setting cam 29 to lift the same into the path of a star wheel 30 carried by the striper attachment, as hereinafter described.
  • the cam 29 is depressed downwardly out or" the path of the star wheel 30 by means of the same shoe 28 which after making one or more complete revolutions is caused to take a high position and consequently the upper side of the cam is engaged and the latter forced downwardly out of the path of the star wheel.
  • the high and low positions of the link 22 are effected by a link chain 31 having certain of its links provided with cam surfaces 32 adapted to engage under the roller 24 and lift the link 22 the length of the slot 23.
  • the chain 31 is carried at its upper end by a sprocket wheel 33 mounted on the shaft 19 and integrally attached to the hub of the ratchet wheel 21. The lower end of the chain simply hangs downwardly as illustrated in Figure 5.
  • the upper position of the shoe 28 is limited by a set screw 46 which is carried over the end of the lever 26 in a bracket 4'7 projecting from the side of the third post 18. In its depressed position the lever 26 adjacent the shoe 28 engages a flat spring 48, one end thereof being fixed on the surface of the base plate 15, as illustrated in Figure 4.
  • the star wheel cam 29, as just explained, is raised and lowered to bring it into and out of the path of the star wheel 30, which operates the several movements of the striper mechanism.
  • the cam 29 comprises a lateral plate having two high points 49 and 50 spaced one behind the other so that, first, point 49 engages the star wheel 30 and turns it a quarter turn and then point 50 engages and completes the full half turn of the wheel.
  • the inner end of the plate carries an upright slide 51, which moves in guideways 52 cut in the outer face of a needle plate 11, and which is provided with upright slots 53 to receive guide screws 54 screwed into the needle plate 11 and provided with heads overlying the sides of the slots 53 to hold the slide 51 in position against the needle plate 11, as illustratively exemplified in Figures 4 and 8.
  • a dog 55 which is provided with a tooth 56 engaging a notch 57 in the side of the slide 51.
  • the dog 55 is pivotally mounted on the needle plate 11 adjacent the one carrying the cam 29 and its upper end has an eye to receive the free end of a rod 58, the latter being pivotally carried at its other end in a lug 59.
  • a spring 60 is disposed about the rod 58 and tends to force the dog 55 against the slide 51 and into the notch 5'7.
  • the cam 29 when being held by the dog 55 is disengaged as it is engaged under the shoe 28, which has been raised by a spring connection 61 between the lever 26 and a bracket 62 projecting from the upper end of the intermediate post 17.
  • the striper comprises a base plate 63, which is adapted to be mounted upon the bed of the knitting machine closely adj acent the periphery of the cylinder 10, and which is provided with an upright bored column 64 having a side wing portion 65', and angular projection 65 disposed in a direction away from the cylinder 10.
  • the rear end of the projection 65 is provided with an upright bore in which an upright shaft 66 is mounted, the end of the latter below the bearing being provided with a pinion gear 57 and a cam lock 68 in the form of a circular plate having two diametrically oppositely projecting teeth 69.
  • the pinion gear 6'7 is in mesh with a similar pinion gear 67 idly mounted on a screw bearing 70 in the upper face of the base plate 63.
  • a relatively large idler spur gear 71 is in mesh with the pinion 67 and with a spur gear '72 which forms an integral part of the star wheel 30, the latter being disposed above the spur gear 72 and both are fixedly mounted on an upright fixed stud shaft 73 projecting into the base plate 63 at one end and supported at its upper end in an arm 74 of an upright standard 75 of the base 63.
  • the star wheel 30 comprises a rotary member having four equally spaced teeth and for the sake of clarity we have designated the teeth 1, 2, 3, and 4, which denotes the order in which they are engaged by the cam 29.
  • the base 63 is provided with an opening in which a disc 30a is mounted, the latter turning with the shaft '73 and having depressions 30b in its periphery corresponding with the number of teeth in the star wheel 30.
  • An opening is drilled in the base 63 radially of the opening thereof to accommodate a ball or plunger 300 which is urged in the direction of the disc 30a and into one of the depressions 301) by a spring 30d, a screw 30c being placed in the opening to hold the spring under tension. See Figures 1 and 2.
  • the movement which the star wheel 30 imparts to the gears 72, 71, 6'7 and 67 is transmited to the shaft 66 which carries a series of four cams 76, 7'7, 78 and '79 each being arranged above the other and adapted to operate a similar number of slide bars 80, 81, 82 and 33, respectively.
  • the uppermost slide controls the movement of a slide link at the end of which is a yarn clamp 84 holding the severed end of the yarn against a plate 85 arranged on the under side of a stationary cutting blade 86, the latter being fixed on a bracket 87 carried on the wing portion 65 of the column 64.
  • the end of the cutting blade 86 beyond the cutting edge is inclined downwardly and then upwardly to form an angular tail piece 88.
  • the next lower cam 77 through the slide 81 and a link connection reciprocates the side thereof into engagement with a radial toe 91 of the outside yarn finger 92 as illustrated in Figure 1 particularly.
  • the fourth slide 83 is also provided with a downwardly projecting portion 93 which is engaged by a radially dim posed toe 94 of an inside yarn finger 95.
  • Both yarn fingers 92 and 95 are rotatably mounted on the same pivot screw 95 which is disposed at an angle and is carried by one side of the angular projection 65.
  • the slide plates 80, 31, 32 and 33 are held in retracted position by means of springs 97, each thereof being attached to its respective slide at one end, while the opposite end is attached to a fixed part of the apparatus.
  • the yarn fingers and 95 are respectively provided with further radial projections 93 and 99 which receive the ends of springs 100 and 101, respectively, the other ends of the springs being attached to an arm 102.
  • a stitch wheel bracket 103 is carried by the striper and comprises a shank 104 projecting into the bore of the column 64 Where it is held in any adjusted position by means of a set screw 1115.
  • the shank 194 supports a transversely disposed barrel portion having its outer end provided with an angular bracket 166, the bracket being slotted at the end to receive a spindle 107 upon which the arm 102 is mounted.
  • the spindle 107 is disposed at an inclination to the perpendicular and on its depending end it carries loosely a stitch wheel 108, the latter comprising a plurality of inclined semi-circular radially disposed blades 109, the outer ends of which are provided with burrs 110.
  • the blades are arranged in numbers corresponding to the distance between needles 14 and the gauge of the fabric to be knitted.
  • the stitch wheel 108 is supported so as to operate just over the angular tail 88 of the stationary cutting blade 86.
  • the yarn is guided into the burrs 119 of the blades 199 and then into the needles 14 from a yarn guide 111, which comprises a long straight shank mounted on an offset portion of the barrel of the bracket 103 and a curved free end portion 112 having a curved slot 113 in the arc of the eyes 114 and 115 at the ends of yarn fingers 92 and 95, respectively, as illustrated in Figure 1.
  • the yarns designated A and B are, respectively, the yarn of which the body of the fabric is being knitted and yarn of which the stripe is being produced.
  • Suitable eyelets 116 are carried at the outer ends of radial arms 117' which form a spider bracket mounted on the inner end of the yarn guide 11, the eyelets 116 being adapted to carry the separate yarns into positions adjacent the eyes 114 and 115 of the yarn fingers.
  • the yarn clamp 84 and cutter blade 8 are arranged so that the clamp 34 moves into clamped position to hold the yarns and is followed immediately by the cutter blade 89.
  • This movement is controlled by an upright slide post 117 having two aligned slots 118 to accommodate screws 119 mounted in an arm of a bracket plate 120 which it attached by its other arm to the projection 65.
  • the heads of the screws 119 overlap the side walls of the slots 118 and hold the part 117 against the bracket plate 120, as illustrated in Figure 3.
  • the upper end of the slide part 117 is provided with a stop plate 121 projecting at right angles thereto and in the direction of the tail portions of the two upper slide bars 80, and 81.
  • the plate 121 is provided with a slot 122 in its free end to allow a projection 124 of the slide 81 to pass through without the clamp 84 being withdrawn.
  • a second projection 123 on slide passes over plate 121 at the same time that projection 124 passes through the slot 122.
  • the normal tendency of the slide part 117 is to move upwardly, which movement is caused by a spring 125 having one end attached to the lower side of the part 117 and its upper end to the upper end of the bracket plate 120.
  • the slide part 117 having been moved to its lower position, and having brought the slot 122 in line with the projection 124 of the cutter blade slide 81, thus freeing both slides to be closed, the slide 117 is locked in lowered position by means of a lever dog 126, which is pivotally mounted on a screw stud 127 standing upright in the wing section 120 adjacent the pinion 67 and cam lock 68 of the upright shaft 66.
  • lever dog 1.26 One end of the lever dog 1.26 is disposed in the path of the teeth 69 of the lock 68, while the other end is urged against the upright side of the part 117 by means of a spring 127'.
  • the outer end of the dog 126 is provided with a toe 128 which enters a notch 129 in the side of the part 11.7 when the latter has been moved to its lowest position.
  • the means utilized to operate the part 117 in a downward direction against the spring 125 comprises a lever arm 130 pivoted at one end to the upper end of an upright post 131 and slotted at its other end to receive a pin 132 projecting from the outer face of the part 117 midway between the slots 118.
  • a screw pivot 133 upon which the upper end of a lifting link 134 is mounted, the opposite or lower end being pivotally supported on an arm 135.
  • the arm 135 at its other end is fixed to turn with shaft 136 bearing in the parallel legs of an inverted U-shaped bracket 137, which receives its rigid support on a projection 133 of the column 64, and which is rigidly attached at its outer leg to the lower end 115 of the upright post 131.
  • the shaft 136 is disposed on a radial line of the table 10 and at its inner end beyond the bracket 137 is mounted an arm 139 which, as shown in Figure 3, trails in the direction of rotation of the cylinder 10, so as to be disposed in the path. of a release earn 149 mounted on a bracket 141 connected to the lower edge of the cylinder 10 at a point below the star wheel cam plate 29.
  • the cam 140 has a beveled approach and tail so that the arm 139 when brought into engagement therewith is forced to ride up, then along the length of the high part of the cam and finally rides down again. to allow the slide part 117 to assume its initial position upon release of the lock 68.
  • a complete knitting machine of the type applicable to a horizontal striper of the character just described, has not been illustrated, because spring needle knitting machines are particularly well known in the art and have been 135 widely used for knitting underwear, eiderdown, stockinet and astrakhan fabrics for many years.
  • the machines usually carry two rotary needle cylinders 10 and the cylinders of knitted fabrics released from the needles 14 mount upwardly and are rolled upon a pair of overhead take up rollers.
  • Cams 78 and 79 have also moved to operate their slides 82 and 83, respectively, and cause the two yarn fingers 92 and 95 to take adjacent parallel positions, shown in Figure 13.
  • the two yarn fingers 92 and 95 to take adjacent parallel positions, shown in Figure 13.
  • the nib 110 of one of the blades 109 is picked up by the nib 110 of one of the blades 109 and introduced between adjacent passing needles at a point below the beards.
  • the picked up stripe yarn B accompanies the yarn A which is still being fed to the needles 14, as shown in Figure 15.
  • the second or trailing high point 50 has engaged the tooth 2 of the star wheel turning the latter another quarter turn, and with it the yarn fingers 92 and 95 to the position shown in Figures 16, 1'7 and 18, i. e., the cams '78 and 79 having continued to move their slides 82 and 83 until the outside finger 92 with its yarn B is in its high position and the inside finger 95 is in its low position bringing yarn A to the bottom of the slot 113 in the yarn guide 111.
  • the stripe yarn B has been fed into about three loops, as shown in Figure 17 and both the cutter blade 89 and yarn clamp 84 are still held open.
  • the yarn A is now in position to be taken out of action and the movable cutter blade 89 is open to receive this yarn during the next movement.
  • the fourth and last position of the striper is illustrated in Figures 19, 20 and 21, wherein the cutter blade release cam 140 has lifted the arm 139 and through the link connection has caused the upper projection 121 to release the slide 80 and allow the clamp 84 to move in and engage the yarn A.
  • the upper projection and plate 121 releases slide 80 and is immediately followed by movement of the lower projection of plate 121 to release slide 81. Almost instantly following the movement of the clamp 84 to close on yarn A the cutter blade is released and severs the yarn as illustrated in Figure 20.
  • a horizontal striping attachment for a knitting machine having a circularly arranged needle table with upright spring bearded needles disposed peripherally thereof
  • the combination of a horizontal striping attachment disposed outside the needle table comprising means for introducing yarn between and beneath the beards of successive needles at a certain stage in the circular travel thereof, means for carrying two separate yarns and bringing one or the other into position to be picked up by the first means, further means for holding and severing one yarn while the other yarn is being fed into the needles by the first means and means movable in an upright direction and carried by the needle table and being selectively positioned to cause movement in the yarn carrying means to reverse the positions of the yarns and to operate the yarn holding and severing means
  • the last means comprises a cam having two high points and being movable in an upright direction in and out of position to move the yarn carrying means and holder and severing means, and a cam setting device mounted in advance of the striper attachment to move the cam into and out of operative position.
  • a horizontal striping attachment for a knitting machine, having a circularly arranged needle table with upright spring bearded needles disposed peripherally thereof
  • a horizontal striping attachment disposed outside the needle table, comprising means for introducing yarn between and beneath the beards of successive needles at a certain stage in the circular travel thereof, means for carrying two separate yarns and bringing one or the other into position to be picked up by the first means, further means for holding and severing one yarn while the other yarn is being fed into the needles by the first means and means movable in an upright direction and carried by the needle table and being selectively positioned to cause movement in the yarn carrying means to reverse the positions of the yarns and to operate the yarn holding and severing means
  • the last means comprises a cam plate having two high points, one thereof being adapted to place the second means into operation to reverse the positions of the two yarns and the second operating the yarn holding and severing means, means for holding said cam for vertical adjustment with respect to the needle table, yieldable means for holding the
  • a horizontal striping attachment for a knitting machine, having a circularly arranged needle table provided with upright spring bearded needles disposed peripherally thereof
  • a horizontal striping attachment disposed entirely outside the needle table, comprising a rotary bladed stitching wheel arranged to introduce yarn into the needles beneath their beards, yarn fingers pivotally mounted and adapted to carry a plurality of yarns to bring one at av time into the path of the stitching wheel, a yarn clamp for holding the inactive yarn, a cutting blade for severing the active yarn after the yarns have been reversed by said yarn fingers, a set of cams moving together and separately operating the yarn fingers, yarn clamp and cutting blade, means for imparting movement to said cams, and means moving in a circular path with said needle table and movable into and out of the path of the first means to bring it into operative or inoperative position for effecting movement in the yarn fingers, clamp and cutting blade, and in which the means for imparting movement to the cams comprises a star wheel having its teeth operated intermittent
  • a horizontal striping attachment for a knitting machine, having a circularly arranged needle table provided with upright spring bearded needles disposed peripherally thereof
  • a horizontal striping attachment disposed entirely outside the needle table, comprising a rotary bladed stitching wheel arranged to introduce yarn into the needles beneath their beards, yarn fingers pivotally mounted and adapted to carry a plurality of yarns to bring one at a time into the path of the stitching wheel, a yarn clamp for holding the inactive yarn, a cutting blade for severing the active yarn after the yarns have been reversed by said yarn fingers, a set of cams moving together and separately operating the yarn fingers, yarn clamp and cutting blade, means for imparting movement to said cams, and means moving in a circular path with said needle table and movable into and out of the path of the first means to bring it into operative or inoperative position for effecting movement in the yarn fingers, clamp and cutting blade, and in which the means for impartin movement to the cams comprises a star wheel having radial teeth
  • a horizontal striper attachment for a kni ting machine, having a circularly arranged needle table provided with upright spring bearded needles disposed peripherally thereof
  • a horizontal striping attachment disposed entirely outside the needle table, comprising a rotary bladed stitching wheel arranged to introduce yarn into the needles beneath their beards, yarn fingers pivotally mounted and adapted to carry a plurality of yarns to bring one at a time into the path of the stitching wheel, a yarn clamp for holding the inactive yarn, a cutting blade for severing the active yarn after the yarns have been reversed by said yarn fingers,
  • the first means comprises a lateral cam plate having two high points, one trailing the other
  • the second means comprises a star wheel having four radial teeth to be engaged by said cam, a train of gears operating from aid star wheel, and a common shaft for one of the gears and all of the cams.
  • a horizontal striper attachment for a knitting machine. having a circularly arranged needle table provided with upright spring beardcd needles disposed peripherally thereof, the combination of a horizontal striping attachment disposed entirely outside the needle table, comprising a rotary bladed stitching wheel arranged to introduce yarn into the needles beneath their beards, yarn fingers pivotally mounted and adapted to carry a plurality of yarns to bring one at a time into the path of the stitching wheel, a yarn clamp for holding the inactive yarn, a cutting blade for severing the active yarn after the yarns have been reversed by said yarn fingers, a set of cams moving together and separately operating the yarn fingers, yarn clamp and cutting blade, means for imparting movement to said cams, and means moving in a circular Path with said needle table and movable into and-out of the path of the first means to bring it into operative or inoperative position for effecting movement in the yarn fingers, clamp and cutting blade, and in which the first means comprises a lateral cam having two high points, one trailing the other,
  • a horizontal striping attachment for a knitting machine, having a circularly arranged needle table provided with upright spring bearded needles disposed peripherally thereof
  • a horizontal striping attachment disposed entirely outside the needle table, comprising a rotary bladed stitching wheel arranged to introduce yarn into the needles beneath their beards, yarn fingers pivotally mounted and adapted to carry a plurality of yarns to bring one at a time into the path of the stitching wheel, a yarn clamp for holding the inactive yarn, a cutting blade for severing the active yarn after the yarns have been reversed by said yarn fingers, a set of cams moving together and separately operating the yarn fingers, yarn clamp and cutting blade, means for imparting movement to said cams, and means moving in a circular path with said needle table and movable into and out of the path of the first means to bring it into operative or inoperative position for effecting movement in the yarn fingers, clamp and cutting blade, and including needle plate sections and a back rail between which the needles are clamped, and in which said
  • a horizontal striping attachment for a knitting machine, having a circularly arranged needle table provided with upright spring bearded needles disposed peripherally thereof
  • a horizontal striping attachment disposed entirely outside the needle table, comprising a rotary bladed stitching wheel arranged to introduce yarn into the needles beneath their beards, yarn fingers pivotally mounted and adapted to carry a plurality of yarns to bring one at a time into the path of the stitching wheel, a yarn clamp for holding the inactive yarn, a cutting blade for severing the active yarn after the yarns have been reversed by said yarn fingers, a set of cams moving together and separately operating the yarn fingers, yarn clamp and cutting blade, means for imparting movement to said cams, and means moving in a circular path with said needle table and movable into and out of the path of the first means to bring it into operative or inoperative position for effecting movement in the yarn fingers, clamp and cutting blade, and in.
  • the second means includes a star wheel intermittently rotated by being engaged the first means, a train of gears operated by movement of the star wheel, a shaft common to said cams, and the end gear of the train, a tooth member mounted on said shaft, a slide operating each yarn finger, clamp and cutter-blade from its respective cam, a movable member having a slot to be moved into position to free the slide operating the cutter-blade, means operated by said toothed member to engage the slotted member and hold the same stationary, a cam attached to the needle table under the first cam, a link connection for lifting the slotted member, a spring for returning the same, a shaft operatively connected to said link connection, and an arm carried by the shaft in the path or the second cam.
  • a cam setting attachment for changing the elevation of the cam, comprising a lever arm movable to lift said cam as it passes and to depress the cam again in a subsequent passing thereof.
  • a cam setting attachment for changing the elevation of the cam, comprising an arm pivotally mounted centrally thereof and having a shoe at its free end movable into the path of said cam to raise the same and thereafter to again return the cam to its initial position out of the path of the shoe, and means to lower said arm at its free end to engage under the cam and lift it at predetermined intervals.
  • a cam setting attachment for changing the elevation of the cam, comprising a standard, a lever arm pivotally mounted midway thereof on said standard, a shoe for the free end of the lever arm to engage under the cam to lift it and above the cam to lower it, a lifting link for the opposite end of the lever arm, and intermittent rotary means for lifting said link and lowering the shoe to engage under the cam to raise the same.
  • a cam setting attachment for changing the elevation of the cam, comprising a fixed standard, a lever arm pivotally mounted between its ends on said standard, a shoe for the free end of the lever arm to engage under the cam to lift it and to engage it from above to lower the cam, a lifting link for the other end of the lever arm having a follower at its opposite end, a chain movable under said follower, and cam links arranged at spaced distances in said chain for lifting the follower and link and lowering the shoe to engage under the cam.
  • a trip cam having two high points movable in an upri ht direction and selectively disposed to cause movement in the fingers, and oapable of movement vertically into and out of operative position
  • a cam setting attachment for changing the elevation of the cam, comprising a fixed standard, a lever arm pivotally mounted between its ends on said standard, a shoe for the free end of the lever arm to engage under the cam to lift it and to engage it from above to lower the cam, a lifting link for the other end of the lever arm having a follower at its opposite end, a chain movable under said follower, cam links arranged at spaced distances in said chain for lifting the follower and link and lowering the shoe to engage under the cam, a sprocket wheel carryin the chain, and means for intermittently rotating said sprocket.
  • a cam setting attachment for changing the elevation of the cam, comprising a fixed standard, a lever arm pivotally mounted between its ends on said standard, a shoe for the free end of the lever arm to engage under the cam to lift it and to engage it from above to lower the cam, a lifting link for the other end of the lever arm having a follower at its opposite end, a chain movable under said follower, cam links arranged at spaced distances in said chain for lifting the follower and link and lowering the shoe to engage under the cam, a sprocket wheel carrying the chain, and means for intermittently rotating said sprocket, comprising a ratchet wheel turning with the sprocket,
  • a cam setting attachment of the character described comprising a traveling cam movable in an upright direction and disposed for movement to operate other instrumentalities, and a cam setting attachment for throwing said first cam into operative position, comprising a lever arm movable to lift said cam as it passes and to depress the cam again in a subsequent passing thereof.
  • a cam setting attachment of the character described comprising a traveling cam movable in an upright direction and. disposed for movement to operate other instrumentalities, and a cam setting attachment for throwing said first cam into operative position, comprising an arm pivotally mounted centrally thereof and having a shoe at its free end movable into the path of said cam to raise the same and thereafter to again return the cam to its initial position out of the path of the shoe, and means to lower said arm at its free end to engage under the cam and lift it at predetermined intervals.
  • a cam setting attachment of the character described comprising a traveling cam movable in an upright direction and disposed for movement to operate other instrinnentalities, and a cam setting attachment for throwing said first cam into operative position, comprising a standard, a lever arm pivotally mounted midway thereof on said standard, a shoe for the free end of the lever arm to engage under the cam to lift it and above the cam to lower it, a lifting link for the opposite end of the lever arm, and intermittent rotary means for lifting said link and lowering the shoe to engage under the cam to raise the same.
  • a cam setting attachment of the character described comprising a traveling cam movable in an upright direction and disposed for movement to operate other instrumentalities, and a cam setting attachment for throwing said first cam into operative position, comprising a fixed standard, a lever arm pivotally mounted between its ends on said standard, a shoe for the free end of the lever arm to engage under the cam to lift it and to engage it from above to lower the cam, a lifting link for the other end of the lever arm having a follower at its opposite end, a chain movable under said follower, and cam links arranged at spaced distances in said chain for lifting the follower and link and lowering the shoe to engage under the cam.
  • a cam setting attachment of the character described comprising a traveling cam movable in an upright direction and disposed for movement to operate other instrumentalities, and a cam setting attachment for throwing said first cam into operative position, comprising a fixed standard, a lever arm pivotally mounted between its ends on said standard, a shoe for the free end of the lever arm to engage under the cam to lift it and to engage it from above to lower the cam, a lifting link for the other end of the lever arm having a follower at its opposite end, a chain movable under said follower, cam links arranged at spaced distances in said chain for lifting the follower and link and lowering the shoe to engage under the cam, a sprocket wheel carrying the chain, and means for intermittently rotating said sprocket.
  • a cam setting attachment of the character described comprising a traveling cam movable in an upright direction and disposed for movement to operate other instrumentalities, and a cam setting attachment for throwing said first cam into operative position, comprising a fixed standard, a lever arm pivotally mounted between its ends on said standard, a shoe for the free end of the lever arm to engage under'the cam to lift it and to engage it from above to lower the earn, a lifting link for the other end of the lever arm having a follower at its opposite end, a chain movable under said follower, cam links arranged at spaced distances in said chain for lifting the follower and link and lowering the shoe to engage under the cam, a sprocket wheel carrying the chain, and means for intermittently rotating said sprocket, comprising a ratchet Wheel turning with the sprocket, a dog for stepping the the ratchet wheel around, a pivoted 1ever arm mounted on said standard, and connected to the dog at one end and provided with a shoe at the other end,

Description

E. MILNER ET AL Apnl 17, 1934. 1,955,594
APPARATUS FOR THE PRODUCTION OF HORIZONTAL STRIPES ON THE CIRCULAR TYPE KNITTING FRAME Filed July-ll. 1950 10 Sheets-Sheet 1 i NVENTORS NK l/HL TER EM/L N/L/vER -12 FRI? BY 2! M Ma W4 A'ITORNEYJ Aprll 17, 1934. MlLNER AL 1,955,594
APPARATUS FOR THE PRODUCTION OF HORIZONTAL STRIPES on THE CIRCULAR TYPE KNITTING FRAME Filed July 11, 1930 10 Sheets-Sheet 2 INVENTORS EM/L M/LNER M, F'RHN/f Alan-5R BYfjonk. OW:
ATTORNEYS April 17, 1934.
E. MILNER El AL APPARATUS FOR THE PRODUCTION OF HORIZONTAL STRIPES ON THE CIRCULAR TYPE KNITTING FRAME Filed July 1] 1930 10 Sheets-Sheet 3 INVENTORS EM/L NIL/Vt?! m RHNK UFLTE A'ITORNEY5 Apr-11 17, 1934. E. MILNER r-:r AL 1,955,594
APPARATUS FOR THE PRODUCTION OF HORIZONTAL STRIPES ON THE CIRCULAR TYPE KNITTING FRAME Filed July 11, 1950 10 Sheets-Sheet 4 I I I z 2 I I m7 I I I l I INVENTORS EM/L JV/LNER mwf'kH/m NFL-TEA BYALM 0 MW ATTORNEYS Apn! 17, 1934. E. MILNER El AL 1,955,594
APPARATUS FOR THE PRODUCTION OF HORIZONTAL STRIPES ON THE CIRCULAR TYPE KNITTING FRAME Filed July 11, 1930 10 Sheets-Sheet 5 INVENTORS EN/L. lf/LNER mu: FRfi'N/f NHLTER BYMM How ATTORNEYS April 17, 1934- E. MiLNER ET AL ,955,594
APPARATUS FOR THE PRODUCTION OF HORIZONTAL STRIPES ON THE CIRCULAR TYPE KNITTING FRAME Filed July 11. 1930 10 Sheets-Sheet e INVENTORS EM/L M/LNER MD FRHNK NHLrER BY 11m w MOW ATTORNEYS E. MILNER ET AL 1,955,594 APPARATUS FOR THE PRODUCTION OF HORIZONTAL STRIPES ON THE CIRCULAR TYPE KNITTING FRAME Filed July 11, 1930 10 Sheets-Sheet 7 April 17, 1934 INVENTORS E'M/L M/LNER MDFkH/v/r WELT/FR aw. P Mafia ATTORNEYS April 17, 1934. E. MILNER El AL 1,955,594
APPARKTUS FOR THE PRODUCTION OF HORIZONTAL STRIPES QN THE CIRCULAR TYPE KNITTING FRAME Filed July 11, 1930 10 Sheets-Sheet 8 INVENTORS ENIL M/LNR m F? n/wr News ATI'ORNEY5 10 Sheets-Sheet 9 April 17, 1934. E. MILNER ET AL APPARATUS FOR THE PRODUCTION OF HORIZONTAL STRIPES ON THE CIRCULAR TYPE KNITTING FRAME Flled July 11, 1930 INVENTORS EM L MIL NER DMD FRHNK NF. TER
B LLW 069W ATTORNEYS April 17, 1934. mL ET AL 1,955,594
APPARATUS FOR THE PRODUCTION OF HORIZONTAL STRIPES on THE CIRCULAR TYPE KNITTING FRAME Filed July 11, 1930 10 Sheets-Sheet 10 l NVENTORS 5mm M/LNER mm FRF/NK Um TER ATTORNEYS Patented Apr. 17, 1934 a FiCE- APPARATUS FQR THE PRQDUCTHQN OF HORIZGN'EAL STREPES N THE CEECULAR TYPE KNITTING FRAME Emil Milner and Frank 'Walter, Philadelphia, Pa., assigncrs to Continental Mills, Inc, Philadelphia, Pa.
Application July 11, 1930, Serial No. 467,234
22 Claims.
This invention relates to an attachment for circular knitting machines and has reference particular to certain instrumentalities which cooperate with the regular knitting elements to produce a horizontal stripe at predetermined space intervals throughout the knitted fabric.
The object of our invention is to provide an attachment which is readily applicable to a circular knitting machine for th purpose of introducing a new yarn into the fabric being knitted, the new yarn being knitted in for one or more rows while the old yarn is held in readiness to again take its place in the needles immediately the new yarn has completed its row of stripes.
A further object of this invention is to provide a mechanism of this character which is enioient in operation and extremely easy to adjust for different knitting gauges.
We accomplish these objects by means of the attachments hereinafter described in the specification, se forth in the appended claims and illustratively exemplified in the accompanying drawings, in which, Figure 1 is a side elevational view of the horizontal striper; Figure 2 is a substantially horizontal sectional view of the striper taken on lines 2-2 of Figure 1; Figure 3 is an end elevational View of the striper; Figure 4 is a top plan view of. the cam setting mechanism for throwing the striper into operation; Figure 5 is a side elevaticnal view of the cam setter; Figure 6 is a substantially longitudinal sectional view or" the cam setter taken on lines 6-5 of Figure l; Figure 7 is a front elevational view of a am carried by the circular needle table for operating the care setter; Figure 8 is a perspective view of the circular needle table and the cam attachments for operating the striper attachrnent; Figure 9 is a substantially transverse sectional View of the needle table showing the cam attachment for operating the cutter and yarn holder in the striper attachment; Figure 10 is a perspective view of the side of the striper attachment showing the parts in a position ready to introduce the new yarn and begin the stripe; Figure 11 is a top plan elevational view of the same; Figure 12 is a view of the parts as illustrated in Figure it; Figure 13 is a view similar to Figure 19 with the parts moved to their second position; Figure 14 is a top plan View of the parts in tl e position shown in Figure 13; Figure 15 is a front elevational view of the same; Figure 16 is a perspective view of the side of the striper with its parts in their third positions; Figure 17 is a top plan view of the same; Figure 18 is a front elevational view of the needle bed and a (Cl. 66-M0) sectional portion of the striper; Figure 19 is a perspective view of the striper in the fourth position of its parts; Figure 20 is a top plan view thereof; and Figure 21 is a front elevational view of the needle bed of the parts in the fourth position.
Referring now to the drawings, 10 denotes the cylinder of a knitting machine and 11 the needle plates which are clamped to the cylinder 10 in their upright positions by means of clamp screws 12. A back stand ring 13 is fixed in position on the cylinder 10 to support the backs of the bearded spring needles 14, the outer sides thereof being clamped in position by the needle plates 11.
The needle cylinder 10 revolves on a bed plate,
not shown, which forms the working top surface of the original knitting machine, and upon which the several instrumentalities are mounted in close proximity to the periphery of the revolving cylinder 1G.
The several instrumentalities constituting the present attachment are brought into successive operation by means of a series of cams mounted on the revolving cylinder 10 and needle plates 11. The first instrument to be effected is the star wheel cam setter, illustratively exemplified in Figures l to 7, inclusive, which comprises a base plate 15 fixed on the bed plate of the machine and provided with three upright posts 16, 1'? and 18, the latter being disposed on a radial line of the cylinder 10. The rear post 16 is higher than the others and is provided at its upper end with a bearing in which one end of a stud shaft 19 is rigidly fixed, the outer end of the shaft carrying one end of an inclined arm 20. Intermediate the post 16 and arm 20 is a ratchet wheel 21 adjacent the post 16, a link plate 22 having a longitudinally disposed central slot 23 to loosely embrace the shaft 19, the upper end of the link 22 having a roller 24 mounted on a screw stud 25 projecting from one side of the link. The lower end of the link 22 is pivotally connected to one end of a lever 26, which oscillates on a stud 27 and which on its opposite end is provided with an upright transverse shoe 28. This shoe 28 is adapted to engage under the star wheel setting cam 29 to lift the same into the path of a star wheel 30 carried by the striper attachment, as hereinafter described. The cam 29 is depressed downwardly out or" the path of the star wheel 30 by means of the same shoe 28 which after making one or more complete revolutions is caused to take a high position and consequently the upper side of the cam is engaged and the latter forced downwardly out of the path of the star wheel.
The high and low positions of the link 22 are effected by a link chain 31 having certain of its links provided with cam surfaces 32 adapted to engage under the roller 24 and lift the link 22 the length of the slot 23. The chain 31 is carried at its upper end by a sprocket wheel 33 mounted on the shaft 19 and integrally attached to the hub of the ratchet wheel 21. The lower end of the chain simply hangs downwardly as illustrated in Figure 5. Intermittent rotary movement is imparted to the ratchet wheel 21 by means of a dog 34 shown in Figure 6, which projects upwardly from one end of a lever 35 to which it is pivotally mounted, the hooked end 36 of the do being held yieldably against the ratchet wheel 21 by a spring 37 which is attached at one end to a pin projecting from the rear edge of the dog 34. while the upper end of the spring is connected to an arm 38 projecting from the upper end of the post 16, as shown in Figure 4. The lever 35 is pivotally mounted to the intermediate post 1'? on a screw 39 and at its free end is provided with a shoe 40, which is disposed in the path of a cam 41 carried by one of the needle plates 11, as illustratively exemplified in Figures 6 and 7. Each revolution of the cam 41 with the table 10 causes the same to engage the shoe 40 and lift the free end of the lever 35, while the other end of the latter drops and drags the dog 34 with it to rotate the ratchet wheel 21 the distance between adjacent teeth. In the production of different knitting effects two or more cams 41 may be used and spaced from each other about the periphery of the cylinder 10. The position of the sprocket 33 and chain 31 is made stationary following each movement thereof by means of a toothed wheel 42 loosely mounted on the shaft 19 and attached to the sprocket wheel 33 on its side opposite the ratchet wheel 21. A back lash dog 43 is held in yieldable engagement with the wheel 42 by a spring 44, the pivoted end of the dog 43 being mounted on a screw stud 45 projecting from the free lower end of the arm 20.
The upper position of the shoe 28 is limited by a set screw 46 which is carried over the end of the lever 26 in a bracket 4'7 projecting from the side of the third post 18. In its depressed position the lever 26 adjacent the shoe 28 engages a flat spring 48, one end thereof being fixed on the surface of the base plate 15, as illustrated in Figure 4.
The star wheel cam 29, as just explained, is raised and lowered to bring it into and out of the path of the star wheel 30, which operates the several movements of the striper mechanism. The cam 29 comprises a lateral plate having two high points 49 and 50 spaced one behind the other so that, first, point 49 engages the star wheel 30 and turns it a quarter turn and then point 50 engages and completes the full half turn of the wheel. The inner end of the plate carries an upright slide 51, which moves in guideways 52 cut in the outer face of a needle plate 11, and which is provided with upright slots 53 to receive guide screws 54 screwed into the needle plate 11 and provided with heads overlying the sides of the slots 53 to hold the slide 51 in position against the needle plate 11, as illustratively exemplified in Figures 4 and 8. When the cam 29 is moved to its upper position, as shown in Figure 8, it
is held there by means of a dog 55 which is provided with a tooth 56 engaging a notch 57 in the side of the slide 51. The dog 55 is pivotally mounted on the needle plate 11 adjacent the one carrying the cam 29 and its upper end has an eye to receive the free end of a rod 58, the latter being pivotally carried at its other end in a lug 59. A spring 60 is disposed about the rod 58 and tends to force the dog 55 against the slide 51 and into the notch 5'7. As already explained, the cam 29 when being held by the dog 55 is disengaged as it is engaged under the shoe 28, which has been raised by a spring connection 61 between the lever 26 and a bracket 62 projecting from the upper end of the intermediate post 17.
Referring now to the mechanism for introducing the horizontal stripe into the fabric being knitted, reference will be had particularly to Figures 1 to 3 and 10 to 21. The striper comprises a base plate 63, which is adapted to be mounted upon the bed of the knitting machine closely adj acent the periphery of the cylinder 10, and which is provided with an upright bored column 64 having a side wing portion 65', and angular projection 65 disposed in a direction away from the cylinder 10. The rear end of the projection 65 is provided with an upright bore in which an upright shaft 66 is mounted, the end of the latter below the bearing being provided with a pinion gear 57 and a cam lock 68 in the form of a circular plate having two diametrically oppositely projecting teeth 69. The pinion gear 6'7 is in mesh with a similar pinion gear 67 idly mounted on a screw bearing 70 in the upper face of the base plate 63. A relatively large idler spur gear 71 is in mesh with the pinion 67 and with a spur gear '72 which forms an integral part of the star wheel 30, the latter being disposed above the spur gear 72 and both are fixedly mounted on an upright fixed stud shaft 73 projecting into the base plate 63 at one end and supported at its upper end in an arm 74 of an upright standard 75 of the base 63.
The star wheel 30 comprises a rotary member having four equally spaced teeth and for the sake of clarity we have designated the teeth 1, 2, 3, and 4, which denotes the order in which they are engaged by the cam 29. The base 63 is provided with an opening in which a disc 30a is mounted, the latter turning with the shaft '73 and having depressions 30b in its periphery corresponding with the number of teeth in the star wheel 30. An opening is drilled in the base 63 radially of the opening thereof to accommodate a ball or plunger 300 which is urged in the direction of the disc 30a and into one of the depressions 301) by a spring 30d, a screw 30c being placed in the opening to hold the spring under tension. See Figures 1 and 2. The movement which the star wheel 30 imparts to the gears 72, 71, 6'7 and 67 is transmited to the shaft 66 which carries a series of four cams 76, 7'7, 78 and '79 each being arranged above the other and adapted to operate a similar number of slide bars 80, 81, 82 and 33, respectively. The uppermost slide controls the movement of a slide link at the end of which is a yarn clamp 84 holding the severed end of the yarn against a plate 85 arranged on the under side of a stationary cutting blade 86, the latter being fixed on a bracket 87 carried on the wing portion 65 of the column 64. The end of the cutting blade 86 beyond the cutting edge is inclined downwardly and then upwardly to form an angular tail piece 88. The next lower cam 77 through the slide 81 and a link connection reciprocates the side thereof into engagement with a radial toe 91 of the outside yarn finger 92 as illustrated in Figure 1 particularly. The fourth slide 83 is also provided with a downwardly projecting portion 93 which is engaged by a radially dim posed toe 94 of an inside yarn finger 95. Both yarn fingers 92 and 95 are rotatably mounted on the same pivot screw 95 which is disposed at an angle and is carried by one side of the angular projection 65. The slide plates 80, 31, 32 and 33 are held in retracted position by means of springs 97, each thereof being attached to its respective slide at one end, while the opposite end is attached to a fixed part of the apparatus. The yarn fingers and 95 are respectively provided with further radial projections 93 and 99 which receive the ends of springs 100 and 101, respectively, the other ends of the springs being attached to an arm 102.
A stitch wheel bracket 103 is carried by the striper and comprises a shank 104 projecting into the bore of the column 64 Where it is held in any adjusted position by means of a set screw 1115. The shank 194 supports a transversely disposed barrel portion having its outer end provided with an angular bracket 166, the bracket being slotted at the end to receive a spindle 107 upon which the arm 102 is mounted. The spindle 107 is disposed at an inclination to the perpendicular and on its depending end it carries loosely a stitch wheel 108, the latter comprising a plurality of inclined semi-circular radially disposed blades 109, the outer ends of which are provided with burrs 110. The blades are arranged in numbers corresponding to the distance between needles 14 and the gauge of the fabric to be knitted. The stitch wheel 108 is supported so as to operate just over the angular tail 88 of the stationary cutting blade 86. The yarn is guided into the burrs 119 of the blades 199 and then into the needles 14 from a yarn guide 111, which comprises a long straight shank mounted on an offset portion of the barrel of the bracket 103 and a curved free end portion 112 having a curved slot 113 in the arc of the eyes 114 and 115 at the ends of yarn fingers 92 and 95, respectively, as illustrated in Figure 1.
The yarns designated A and B are, respectively, the yarn of which the body of the fabric is being knitted and yarn of which the stripe is being produced. Suitable eyelets 116 are carried at the outer ends of radial arms 117' which form a spider bracket mounted on the inner end of the yarn guide 11, the eyelets 116 being adapted to carry the separate yarns into positions adjacent the eyes 114 and 115 of the yarn fingers.
As will be explained hereinafter, the yarn clamp 84 and cutter blade 8 are arranged so that the clamp 34 moves into clamped position to hold the yarns and is followed immediately by the cutter blade 89. This movement is controlled by an upright slide post 117 having two aligned slots 118 to accommodate screws 119 mounted in an arm of a bracket plate 120 which it attached by its other arm to the projection 65. The heads of the screws 119 overlap the side walls of the slots 118 and hold the part 117 against the bracket plate 120, as illustrated in Figure 3. The upper end of the slide part 117 is provided with a stop plate 121 projecting at right angles thereto and in the direction of the tail portions of the two upper slide bars 80, and 81. The plate 121 is provided with a slot 122 in its free end to allow a projection 124 of the slide 81 to pass through without the clamp 84 being withdrawn.
A second projection 123 on slide passes over plate 121 at the same time that projection 124 passes through the slot 122. The normal tendency of the slide part 117 is to move upwardly, which movement is caused by a spring 125 having one end attached to the lower side of the part 117 and its upper end to the upper end of the bracket plate 120. The slide part 117 having been moved to its lower position, and having brought the slot 122 in line with the projection 124 of the cutter blade slide 81, thus freeing both slides to be closed, the slide 117 is locked in lowered position by means of a lever dog 126, which is pivotally mounted on a screw stud 127 standing upright in the wing section 120 adjacent the pinion 67 and cam lock 68 of the upright shaft 66. One end of the lever dog 1.26 is disposed in the path of the teeth 69 of the lock 68, while the other end is urged against the upright side of the part 117 by means of a spring 127'. The outer end of the dog 126 is provided with a toe 128 which enters a notch 129 in the side of the part 11.7 when the latter has been moved to its lowest position.
The means utilized to operate the part 117 in a downward direction against the spring 125 comprises a lever arm 130 pivoted at one end to the upper end of an upright post 131 and slotted at its other end to receive a pin 132 projecting from the outer face of the part 117 midway between the slots 118. Intermediate the ends of the lever 130 is a screw pivot 133 upon which the upper end of a lifting link 134 is mounted, the opposite or lower end being pivotally supported on an arm 135. The arm 135 at its other end is fixed to turn with shaft 136 bearing in the parallel legs of an inverted U-shaped bracket 137, which receives its rigid support on a projection 133 of the column 64, and which is rigidly attached at its outer leg to the lower end 115 of the upright post 131. The shaft 136 is disposed on a radial line of the table 10 and at its inner end beyond the bracket 137 is mounted an arm 139 which, as shown in Figure 3, trails in the direction of rotation of the cylinder 10, so as to be disposed in the path. of a release earn 149 mounted on a bracket 141 connected to the lower edge of the cylinder 10 at a point below the star wheel cam plate 29. The cam 140 has a beveled approach and tail so that the arm 139 when brought into engagement therewith is forced to ride up, then along the length of the high part of the cam and finally rides down again. to allow the slide part 117 to assume its initial position upon release of the lock 68.
A complete knitting machine of the type applicable to a horizontal striper of the character just described, has not been illustrated, because spring needle knitting machines are particularly well known in the art and have been 135 widely used for knitting underwear, eiderdown, stockinet and astrakhan fabrics for many years. The machines usually carry two rotary needle cylinders 10 and the cylinders of knitted fabrics released from the needles 14 mount upwardly and are rolled upon a pair of overhead take up rollers.
The operation of our im roved lateral or horizontal striper attachments is substantially as follows: Assuming the parts are in the position illustrated in Figures 10, 11 and 12 and the two yarns being used are of different colors, A being the light colored yarn and forming the body of the fabric, while B is the yarn for forming the stripe and is shaded to show contrast, A yarn is guided through an eyelet 116 and thence 150 through the eye 115 of yarn finger 95 to the slot 113 of the yarn guide 111 where it passes over the tail piece 88 of the stationary cutting blade 86, and is picked up by the burr or nib 110, subsequently being fed under the beards of the needles 14. The old row of loops C of the fabric still about the base of the needles .4 is pushed downwardly by a cloth push down bar 141 arranged at the rear of the revolving line of needles 14 as they pass the striper. The other yarn B is likewise fed in through an eyelet 116 and then to the eye 114 of the outside yarn finger 92. From the finger 92 it passes through the lower end of the slot 113 of the yarn guide 111, which is swung to its lowermost position and which guides the yarn B in a position which allows it to be held by the yarn clamp 84, the movable cutting blade 89 being closed, as shown in Figure 11. Figure 12 shows the yarns A and B, in and out of action before the yarn B is changed for yarn A. The tooth 1 of the star wheel 30 is disposed in position to be next engaged by the cam 29 when the latter is raised to operative position by the cam setter shoe 28.
The next step in the operation of changing over from yarn A to yarn B is illustratively exemplified in figures 13, 14 and 15, wherein the nee dle cylinder 10 has revolved until the first high point 49 of the star wheel cam 29 has engaged tooth l of the star wheel and caused the latter to make a quarter turn. The movement of star wheel 30 has been carried through the train of gears '72, '71, 68 and 67 to the shaft 66 which has moved cams T6 and '77 into position to cause the slides and 81 to withdraw the movable cutter blade 89 and yarn clamp 84, respectively, as shown in Figure 14. Cams 78 and 79 have also moved to operate their slides 82 and 83, respectively, and cause the two yarn fingers 92 and 95 to take adjacent parallel positions, shown in Figure 13. Instantly upon release of the yarn B by the clamp 84 and its elevation from the bottom of the yarn guide slot 113 by the finger 92, it is picked up by the nib 110 of one of the blades 109 and introduced between adjacent passing needles at a point below the beards. At this point the picked up stripe yarn B accompanies the yarn A which is still being fed to the needles 14, as shown in Figure 15.
The needle table 10 and star wheel cam 29 being continuously on the move, the second or trailing high point 50 has engaged the tooth 2 of the star wheel turning the latter another quarter turn, and with it the yarn fingers 92 and 95 to the position shown in Figures 16, 1'7 and 18, i. e., the cams '78 and 79 having continued to move their slides 82 and 83 until the outside finger 92 with its yarn B is in its high position and the inside finger 95 is in its low position bringing yarn A to the bottom of the slot 113 in the yarn guide 111. At this point the stripe yarn B has been fed into about three loops, as shown in Figure 17 and both the cutter blade 89 and yarn clamp 84 are still held open. The yarn A is now in position to be taken out of action and the movable cutter blade 89 is open to receive this yarn during the next movement.
The fourth and last position of the striper is illustrated in Figures 19, 20 and 21, wherein the cutter blade release cam 140 has lifted the arm 139 and through the link connection has caused the upper projection 121 to release the slide 80 and allow the clamp 84 to move in and engage the yarn A. When the slide part 11'? is moved from its upper to its lower position, the upper projection and plate 121 releases slide 80 and is immediately followed by movement of the lower projection of plate 121 to release slide 81. Almost instantly following the movement of the clamp 84 to close on yarn A the cutter blade is released and severs the yarn as illustrated in Figure 20. By this time the striper yarn B has three loops formed beyond the stitch wheel, so that the operation will continue with yarn B until the cam setter having lowered the cam 29 out of the path of the star wheel 30 on the completion of the first revolution is again set in position to lift the cam 29 into the path of tooth 3 of the star wheel, which in the third quarter turn reverses the operation described in the first operation and completely returns yarn A to feeding position subsequent to the final quarter, turning being effected as the second high point 50 of cam 29 turns star wheel 30 by engaging tooth 4.
Having now described one complete cycle of our horizontal knitting attachment and preceded it by a detailed account of the parts constituting the invention, what we claim as new and desire to secure by Letters Patent is:
1. In a horizontal striping attachment for a knitting machine having a circularly arranged needle table with upright spring bearded needles disposed peripherally thereof, the combination of a horizontal striping attachment disposed outside the needle table, comprising means for introducing yarn between and beneath the beards of successive needles at a certain stage in the circular travel thereof, means for carrying two separate yarns and bringing one or the other into position to be picked up by the first means, further means for holding and severing one yarn while the other yarn is being fed into the needles by the first means and means movable in an upright direction and carried by the needle table and being selectively positioned to cause movement in the yarn carrying means to reverse the positions of the yarns and to operate the yarn holding and severing means, and in which the last means comprises a cam having two high points and being movable in an upright direction in and out of position to move the yarn carrying means and holder and severing means, and a cam setting device mounted in advance of the striper attachment to move the cam into and out of operative position.
2. In a horizontal striping attachment for a knitting machine, having a circularly arranged needle table with upright spring bearded needles disposed peripherally thereof, the combination of a horizontal striping attachment disposed outside the needle table, comprising means for introducing yarn between and beneath the beards of successive needles at a certain stage in the circular travel thereof, means for carrying two separate yarns and bringing one or the other into position to be picked up by the first means, further means for holding and severing one yarn while the other yarn is being fed into the needles by the first means and means movable in an upright direction and carried by the needle table and being selectively positioned to cause movement in the yarn carrying means to reverse the positions of the yarns and to operate the yarn holding and severing means, and in which the last means comprises a cam plate having two high points, one thereof being adapted to place the second means into operation to reverse the positions of the two yarns and the second operating the yarn holding and severing means, means for holding said cam for vertical adjustment with respect to the needle table, yieldable means for holding the cam in operative position, and a cam setting device mounted in advance of the striper attachment to move said cam into operative position and then into inoperative position.
3. In a horizontal striper attachment for a knitting machine, having a circularly arranged needle table provided with upright spring bearded needles disposed peripherally thereof, the combination of a horizontal striping attachment disposed entirely outside the needle table, comprising a rotary bladed stitching wheel arranged to introduce yarn into the needles beneath their beards, yarn fingers pivotally mounted and adapted to carry a plurality of yarns to bring one at av time into the path of the stitching wheel, a yarn clamp for holding the inactive yarn, a cutting blade for severing the active yarn after the yarns have been reversed by said yarn fingers, a set of cams moving together and separately operating the yarn fingers, yarn clamp and cutting blade, means for imparting movement to said cams, and means moving in a circular path with said needle table and movable into and out of the path of the first means to bring it into operative or inoperative position for effecting movement in the yarn fingers, clamp and cutting blade, and in which the means for imparting movement to the cams comprises a star wheel having its teeth operated intermittently by engagement with the first means in its operative position.
4. In a horizontal striper attachment for a knitting machine, having a circularly arranged needle table provided with upright spring bearded needles disposed peripherally thereof, the combination of a horizontal striping attachment disposed entirely outside the needle table, comprising a rotary bladed stitching wheel arranged to introduce yarn into the needles beneath their beards, yarn fingers pivotally mounted and adapted to carry a plurality of yarns to bring one at a time into the path of the stitching wheel, a yarn clamp for holding the inactive yarn, a cutting blade for severing the active yarn after the yarns have been reversed by said yarn fingers, a set of cams moving together and separately operating the yarn fingers, yarn clamp and cutting blade, means for imparting movement to said cams, and means moving in a circular path with said needle table and movable into and out of the path of the first means to bring it into operative or inoperative position for effecting movement in the yarn fingers, clamp and cutting blade, and in which the means for impartin movement to the cams comprises a star wheel having radial teeth disposed in the path of said first means, a train of gears operated by movement of said star wheel, and a coil mon shaft for one of the gears and all of the cams.
5. In a horizontal striper attachment for a kni ting machine, having a circularly arranged needle table provided with upright spring bearded needles disposed peripherally thereof, the combination of a horizontal striping attachment disposed entirely outside the needle table, comprising a rotary bladed stitching wheel arranged to introduce yarn into the needles beneath their beards, yarn fingers pivotally mounted and adapted to carry a plurality of yarns to bring one at a time into the path of the stitching wheel, a yarn clamp for holding the inactive yarn, a cutting blade for severing the active yarn after the yarns have been reversed by said yarn fingers,
a set of cams moving together and separately operating the yarn fingers, yarn clamp and cutting blade, means for imparting movement to said cams, and means moving in a circular path with said needle table and movable into and out of the path of the first means to bring it into 0 erative or inoperative position for effecting movement in the yarn fingers, clamp and cutting blade, and in which the first means comprises a lateral cam plate having two high points, one trailing the other, and in which the second means comprises a star wheel having four radial teeth to be engaged by said cam, a train of gears operating from aid star wheel, and a common shaft for one of the gears and all of the cams.
In a horizontal striper attachment for a knitting machine. having a circularly arranged needle table provided with upright spring beardcd needles disposed peripherally thereof, the combination of a horizontal striping attachment disposed entirely outside the needle table, comprising a rotary bladed stitching wheel arranged to introduce yarn into the needles beneath their beards, yarn fingers pivotally mounted and adapted to carry a plurality of yarns to bring one at a time into the path of the stitching wheel, a yarn clamp for holding the inactive yarn, a cutting blade for severing the active yarn after the yarns have been reversed by said yarn fingers, a set of cams moving together and separately operating the yarn fingers, yarn clamp and cutting blade, means for imparting movement to said cams, and means moving in a circular Path with said needle table and movable into and-out of the path of the first means to bring it into operative or inoperative position for effecting movement in the yarn fingers, clamp and cutting blade, and in which the first means comprises a lateral cam having two high points, one trailing the other, a mounting for the cam permitting vertical adjustment thereof, means operated by rotary movement of the needle table to set the elevation of the cam, and in which the second means comprises a star wheel having four teeth disposed in the path of the cam in its upper adjusted position, a train of gears operated from the star wheel, and a shaft common to the end gear of the train and all of the cams.
7. In a horizontal striper attachment for a knitting machine, having a circularly arranged needle table provided with upright spring bearded needles disposed peripherally thereof, the combination of a horizontal striping attachment disposed entirely outside the needle table, comprising a rotary bladed stitching wheel arranged to introduce yarn into the needles beneath their beards, yarn fingers pivotally mounted and adapted to carry a plurality of yarns to bring one at a time into the path of the stitching wheel, a yarn clamp for holding the inactive yarn, a cutting blade for severing the active yarn after the yarns have been reversed by said yarn fingers, a set of cams moving together and separately operating the yarn fingers, yarn clamp and cutting blade, means for imparting movement to said cams, and means moving in a circular path with said needle table and movable into and out of the path of the first means to bring it into operative or inoperative position for effecting movement in the yarn fingers, clamp and cutting blade, and in which the first means comprises a lateral cam having two high points one trailing the other, a mounting for the cam permitting vertical adjustment thereof, a cam setter attachment disposed in advance of the striper attachment and having means for raising and lowering the position of the cam during revolution of the needle table, and means moving with the table in advance of the cam to operate said cam setter.
8. In a horizontal striper attachment for a knitting machine, having a circularly arranged needle table provided with upright spring bearded needles disposed peripherally thereof, the combination of a horizontal striping attachment disposed entirely outside the needle table, comprising a rotary bladed stitching wheel arranged to introduce yarn into the needles beneath their beards, yarn fingers pivotally mounted and adapted to carry a plurality of yarns to bring one at a time into the path of the stitching wheel, a yarn clamp for holding the inactive yarn, a cutting blade for severing the active yarn after the yarns have been reversed by said yarn fingers, a set of cams moving together and separately operating the yarn fingers, yarn clamp and cutting blade, means for imparting movement to said cams, and means moving in a circular path with said needle table and movable into and out of the path of the first means to bring it into operative or inoperative position for effecting movement in the yarn fingers, clamp and cutting blade, and including needle plate sections and a back rail between which the needles are clamped, and in which said first means comprises a cam mounted for vertical adjustment on one of said needle plates, said cam having a notch in its wall, a dog latch yieldably engaging in said notch to hold the cam in its uppermost position, and a cam setter arranged in advance of the striper attachment for raising and lowering the cam.
9. In a horizontal striper attachment for a knitting machine, having a circularly arranged needle table provided with upright spring bearded needles disposed peripherally thereof, the combination of a horizontal striping attachment disposed entirely outside the needle table, comprising a rotary bladed stitching wheel arranged to introduce yarn into the needles beneath their beards, yarn fingers pivotally mounted and adapted to carry a plurality of yarns to bring one at a time into the path of the stitching wheel, a yarn clamp for holding the inactive yarn, a cutting blade for severing the active yarn after the yarns have been reversed by said yarn fingers, a set of cams moving together and separately operating the yarn fingers, yarn clamp and cutting blade, means for imparting movement to said cams, and means moving in a circular path with said needle table and movable into and out of the path of the first means to bring it into operative or inoperative position for effecting movement in the yarn fingers, clamp and cutting blade, and in which the second means includes a star wheel intermittently rotated by being engaged by the first means, a train of gears operated by movement of the star wheel, a shaft common to said cams and the end gear of the train, a tooth member mounted on said shaft, a slide operating each yarn finger, clamp and cutter-blade from its respective cam, a movable member having a slot to be moved into position to free the slide operating the cutterblade, means operated by said toothed member to engage the slotted member and hold the same stationary, and cam operated means for operating the slotted member into and out of engagement with said slide member for the cutter blade.
10. In a horizontal striper attachment for a knitting machine, having a circularly arranged needle table provided with upright spring bearded needles disposed peripherally thereof, the combination of a horizontal striping attachment disposed entirely outside the needle table, comprising a rotary bladed stitching wheel arranged to introduce yarn into the needles beneath their beards, yarn fingers pivotally mounted and adapted to carry a plurality of yarns to bring one at a time into the path of the stitching wheel, a yarn clamp for holding the inactive yarn, a cutting blade for severing the active yarn after the yarns have been reversed by said yarn fingers, a set of cams moving together and separately operating the yarn fingers, yarn clamp and cutting blade, means for imparting movement to said cams, and means moving in a circular path with said needle table and movable into and out of the path of the first means to bring it into operative or inoperative position for effecting movement in the yarn fingers, clamp and cutting blade, and in. which the second means includes a star wheel intermittently rotated by being engaged the first means, a train of gears operated by movement of the star wheel, a shaft common to said cams, and the end gear of the train, a tooth member mounted on said shaft, a slide operating each yarn finger, clamp and cutter-blade from its respective cam, a movable member having a slot to be moved into position to free the slide operating the cutter-blade, means operated by said toothed member to engage the slotted member and hold the same stationary, a cam attached to the needle table under the first cam, a link connection for lifting the slotted member, a spring for returning the same, a shaft operatively connected to said link connection, and an arm carried by the shaft in the path or the second cam.
11. In a horizontal striper attachment for a knitting machine having a pair of yarn fingers for shifting one of two yarns out of the path of the rotary stitch wheel, the combination therewith of a trip cam having two high points movable in an upright direction and selectively disposed to cause movement in the fingers, and capable of movement vertically into and out of operative position, a cam setting attachment for changing the elevation of the cam, comprising a lever arm movable to lift said cam as it passes and to depress the cam again in a subsequent passing thereof.
12. In a horizontal striper attachment for a knitting machine having a pair of yarn fingers for shifting one of two yarns out of the path of the rotary stitch wheel, the combination therewith of a trip cam having two high points movable in an upright direction and selectively disposed to cause movement in the fingers, and capable of movement vertically into and out of operative position, a cam setting attachment for changing the elevation of the cam, comprising an arm pivotally mounted centrally thereof and having a shoe at its free end movable into the path of said cam to raise the same and thereafter to again return the cam to its initial position out of the path of the shoe, and means to lower said arm at its free end to engage under the cam and lift it at predetermined intervals.
13. In a horizontal striper attachment for a knitting machine having a pair of yarn fingers for shifting one of two yarns out of the path of the rotary stitch wheel, the combination therewith of a trip cam having two high points movable in an upright direction and selectively disposed to cause movement in the fingers, and capable of movement vertically into and out of Operative position, a cam setting attachment for changing the elevation of the cam, comprising a standard, a lever arm pivotally mounted midway thereof on said standard, a shoe for the free end of the lever arm to engage under the cam to lift it and above the cam to lower it, a lifting link for the opposite end of the lever arm, and intermittent rotary means for lifting said link and lowering the shoe to engage under the cam to raise the same.
14. In a horizontal striper attachment for a knitting machine having a pair of yarn fingers for shifting one of two yarns out of the path of the rotary stitch Wheel, the combination therewith of a trip cam having two high points movable in an upright direction and selectively disposed to cause movement in the fingers, and capable of movement vertically into and out of operative position, a cam setting attachment for changing the elevation of the cam, comprising a fixed standard, a lever arm pivotally mounted between its ends on said standard, a shoe for the free end of the lever arm to engage under the cam to lift it and to engage it from above to lower the cam, a lifting link for the other end of the lever arm having a follower at its opposite end, a chain movable under said follower, and cam links arranged at spaced distances in said chain for lifting the follower and link and lowering the shoe to engage under the cam.
15. In a horizontal striper attachment for a knitting machine having a pair of yarn fingers for shifting one of two yarns out of the path of the rotary stitch wheel, the combination therewith of a trip cam having two high points movable in an upri ht direction and selectively disposed to cause movement in the fingers, and oapable of movement vertically into and out of operative position, a cam setting attachment for changing the elevation of the cam, comprising a fixed standard, a lever arm pivotally mounted between its ends on said standard, a shoe for the free end of the lever arm to engage under the cam to lift it and to engage it from above to lower the cam, a lifting link for the other end of the lever arm having a follower at its opposite end, a chain movable under said follower, cam links arranged at spaced distances in said chain for lifting the follower and link and lowering the shoe to engage under the cam, a sprocket wheel carryin the chain, and means for intermittently rotating said sprocket.
16. In a horizontal striper attachment for a knitting machine having a pair of yarn fingers for shifting one of two yarns out of the path of the rotary stitch wheel, the combination therewith'of a trip cam having two high points movable in an upright direction and selectively disposed to cause movement in the fingers, and capable of movement vertically into and out of operative position, a cam setting attachment for changing the elevation of the cam, comprising a fixed standard, a lever arm pivotally mounted between its ends on said standard, a shoe for the free end of the lever arm to engage under the cam to lift it and to engage it from above to lower the cam, a lifting link for the other end of the lever arm having a follower at its opposite end, a chain movable under said follower, cam links arranged at spaced distances in said chain for lifting the follower and link and lowering the shoe to engage under the cam, a sprocket wheel carrying the chain, and means for intermittently rotating said sprocket, comprising a ratchet wheel turning with the sprocket, a dog for stepping the ratchet wheel around, a pivoted lever arm mounted on said standard, and connected to the dog at one end and provided with a shoe at the other end, and a cam movable with the first cam to move under said shoe to rock the second lever arm and cause the dog to rotate the ratchet wheel.
17. A cam setting attachment of the character described, comprising a traveling cam movable in an upright direction and disposed for movement to operate other instrumentalities, and a cam setting attachment for throwing said first cam into operative position, comprising a lever arm movable to lift said cam as it passes and to depress the cam again in a subsequent passing thereof.
18. A cam setting attachment of the character described, comprising a traveling cam movable in an upright direction and. disposed for movement to operate other instrumentalities, and a cam setting attachment for throwing said first cam into operative position, comprising an arm pivotally mounted centrally thereof and having a shoe at its free end movable into the path of said cam to raise the same and thereafter to again return the cam to its initial position out of the path of the shoe, and means to lower said arm at its free end to engage under the cam and lift it at predetermined intervals.
19. A cam setting attachment of the character described, comprising a traveling cam movable in an upright direction and disposed for movement to operate other instrinnentalities, and a cam setting attachment for throwing said first cam into operative position, comprising a standard, a lever arm pivotally mounted midway thereof on said standard, a shoe for the free end of the lever arm to engage under the cam to lift it and above the cam to lower it, a lifting link for the opposite end of the lever arm, and intermittent rotary means for lifting said link and lowering the shoe to engage under the cam to raise the same.
29. A cam setting attachment of the character described, comprising a traveling cam movable in an upright direction and disposed for movement to operate other instrumentalities, and a cam setting attachment for throwing said first cam into operative position, comprising a fixed standard, a lever arm pivotally mounted between its ends on said standard, a shoe for the free end of the lever arm to engage under the cam to lift it and to engage it from above to lower the cam, a lifting link for the other end of the lever arm having a follower at its opposite end, a chain movable under said follower, and cam links arranged at spaced distances in said chain for lifting the follower and link and lowering the shoe to engage under the cam.
21. A cam setting attachment of the character described, comprising a traveling cam movable in an upright direction and disposed for movement to operate other instrumentalities, and a cam setting attachment for throwing said first cam into operative position, comprising a fixed standard, a lever arm pivotally mounted between its ends on said standard, a shoe for the free end of the lever arm to engage under the cam to lift it and to engage it from above to lower the cam, a lifting link for the other end of the lever arm having a follower at its opposite end, a chain movable under said follower, cam links arranged at spaced distances in said chain for lifting the follower and link and lowering the shoe to engage under the cam, a sprocket wheel carrying the chain, and means for intermittently rotating said sprocket.
22. A cam setting attachment of the character described, comprising a traveling cam movable in an upright direction and disposed for movement to operate other instrumentalities, and a cam setting attachment for throwing said first cam into operative position, comprising a fixed standard, a lever arm pivotally mounted between its ends on said standard, a shoe for the free end of the lever arm to engage under'the cam to lift it and to engage it from above to lower the earn, a lifting link for the other end of the lever arm having a follower at its opposite end, a chain movable under said follower, cam links arranged at spaced distances in said chain for lifting the follower and link and lowering the shoe to engage under the cam, a sprocket wheel carrying the chain, and means for intermittently rotating said sprocket, comprising a ratchet Wheel turning with the sprocket, a dog for stepping the the ratchet wheel around, a pivoted 1ever arm mounted on said standard, and connected to the dog at one end and provided with a shoe at the other end, and a cam movable with the first cam to move under said shoe to rock the second lever arm and cause the dog to rotate the ratchet wheel.
EMIL MILNER.
FRANK WALTER.
US467234A 1930-07-11 1930-07-11 Apparatus for the production of horizontal stripes on the circular type knitting frame Expired - Lifetime US1955594A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2961858A (en) * 1956-12-17 1960-11-29 Wildman Jacquard Co Yarn feeder and clamp and cutter for knitting machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2961858A (en) * 1956-12-17 1960-11-29 Wildman Jacquard Co Yarn feeder and clamp and cutter for knitting machine

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