US1906204A - Machine for making knitted fabric - Google Patents

Machine for making knitted fabric Download PDF

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Publication number
US1906204A
US1906204A US522450A US52245031A US1906204A US 1906204 A US1906204 A US 1906204A US 522450 A US522450 A US 522450A US 52245031 A US52245031 A US 52245031A US 1906204 A US1906204 A US 1906204A
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Prior art keywords
yarn
needles
cam
fingers
pattern
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US522450A
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English (en)
Inventor
Albert E Page
Jr Harry Swinglehurst
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Scott and Williams Inc
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Scott and Williams Inc
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Priority to US522450A priority Critical patent/US1906204A/en
Priority to DES102949D priority patent/DE611514C/de
Priority to FR732164D priority patent/FR732164A/fr
Priority to GB7100/32A priority patent/GB383840A/en
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Publication of US1906204A publication Critical patent/US1906204A/en
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/26—Circular knitting machines with independently-movable needles for producing patterned fabrics
    • D04B9/28—Circular knitting machines with independently-movable needles for producing patterned fabrics with colour patterns
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/26—Circular knitting machines with independently-movable needles for producing patterned fabrics
    • D04B9/28—Circular knitting machines with independently-movable needles for producing patterned fabrics with colour patterns
    • D04B9/30—Circular knitting machines with independently-movable needles for producing patterned fabrics with colour patterns by striping
    • D04B9/32—Circular knitting machines with independently-movable needles for producing patterned fabrics with colour patterns by striping by wrap striping

Definitions

  • This invention relates to circular knitting machines and the method of operating same, and more particularly to circular knitting machines for making patterns in fabric by the Wrapping of extra yarn around selected needles at each point where the pattern is desired.
  • One obj ect of the invention is to produce a machine having complete selectivity as to the patterns which can be produced. It has heretofore been known to produce patterns by wrapping yarns around raised needles and for that purpose to cause striping yarn ngers to lay their yarns across the circle of needles and later-to cross back inside the circle again.
  • This invention relates to im.- proved mechanism for varying the number' of needles wrapped by the warns. The invention will be shown and described in a machine containing a plurality of pattern yarn lingers pivotally mounted to lay the wrapping yarns in front of selected needles.
  • FIG. 1 is a front elevation of the head of a Scott and Williams circular knitting machine embodying the new invention, the view being taken partly in section through the middle of the machine;
  • Fig. 2 is a plan view of part ofthe head of the machine taken just above the latch ring on the line 2--2 of Fig. 1, showing the relationof the latch ring and the pattern yarn lingers;
  • Fig. -3 is a plan ⁇ view of the head of the machine taken just below the upper bedplate on the line 3-3 of Fig. 1, showlng the general coordination of the mechanism controlling the selection of the needles and the se lection of the pattern yarn fingers; a
  • Fig. 4 vis an elevation of the'left side of the machine and part of the head, showing the levers controllingy the selection of the pattern yarn fingers and needles;
  • Figs. ⁇ 7, 8 and 9 are vertical sections taken through the latch ring showing various lengths of patternA yarn fingers and* their rel lation to the maintaining cam; Fig. 7 showing the long finger, Fi 8 the medium finger and Fig. 9 the short ger;
  • Fig. 10 is a development similarto Fig. 5, showln the position of the yarn after the selecte needles have gotten under the abutment,'the arrow indicating the direction of movement of the needles;
  • Fig. 11 is a detail view inelevation of part of the lever system connecting the trick wheel to the striping yarn finger selectingl cam;
  • Fig. ⁇ 12 is a'detail view in plan of the plate gear forracking the trick wheel-and one end of the racking lever therefor shown 10 in Fig. 3; e v
  • Fig. 13 is a'plan view partly dotted in of the yarn furnishing take-ups on the bobbin A stand;
  • Fig. 14 is diagram showing the relations 'nsl ofthe various kinds of yarn lingers to .the I maintaining cam.
  • the invention is shown embodied in the well known Scott and Williams seamless hosiery knitting machine having a revolvso ing needle cylinder 260, such for instance as shownand described inthe patent to Robert W. Scott, No. 1,152,850; dated September f 7,1915.
  • the needle cylinder is controlled of the mechanism from a'main pattern drumhy a pattern as chain, racked ahead intermittently by a awl actuated from the driving pulley, al as shown in said Scott Patent No. ⁇ 1,152,850.
  • the revolvingneedle cylinder 260 contains a circular -series ofvertically movable' ⁇ inde- ⁇ 9o pendentfneedles N, there being the usual sinkers with the sinker cam cap 300 and the usual knitting cams located below the throat plate 560 .in the latch lrin 550.
  • This latch ring'is pivotally mounte ,on a post 401 at 95 .-the'back of the machine as usua1,and mounted onV this latch ring is a bracket carrying a yarn, bobbin stand 840 and themeans supporting the patternyarn ingers 766, 767, 768.
  • the yarn bobbin stand and the vjpattern yarn iingers revolve in unison with the needle cylinder by mechanism which will be described in detail a little later in the speciiication.
  • the yarn bobbin stand also carries the yarn take-up mechanism.
  • the yarn fingers cross from the inside of the needle circle to the outside and thus lay the' arns in front of selectively raised needles 1 1n order that an element having circumferential movement relatively to the needles may hold the yarns temporarily against the selected needles until they are taken by the latter, the yarn fingers meanwhile continui 5 ing to revolve in unison with the needles.
  • this element having a circumferential movement relatively to the needles is a stationary abutment 870 on the latch ring 550 overlying the 5 needle circle and adapted to arrest each pattern yarn until it can be caught by the needles, and also ladapted to release that yarn when the arn finger snaps back across the needle circ e to the inside of the circle.
  • e'selector cam is made short in its circumferential dimension and the finger can be maintained with the lower end outside 5 the needle circle by a maintaining cam holding it after the release by the selector cam (Fig. 14). While this maintaining cam may pbe located with and move with the selector cam or independently, we prefer to mount same in a stationary manner on the latch ring 550.
  • the bobbin stand 840 is mounted on the I upper bed-plate B of the machine by means of a bracket 841 pivoted on the post 401 at the back of the machine (Figs. 1 and 2).
  • the bracket is an open frame extending over the top of the latch ring and needle cylinder and has an extension 842 on the right side in which is mounted a connection from the vertical shaft 33 driven by the main bevel gear and drive shaft of the machine in the general manner shown in the patent to Robert W. Scott, No. 1,641 101, dated August 30, 1927.
  • the drive shaft 33 preferably passes upward through the upper bed-plate B further from the center of the machine than when it passes through the bobbin stand frame and it therefore has a universal joint connection 843 to a vertical stub shaft.
  • the bobbin stand proper 840 is revolved on the bobbin stand frame by a gear 846 on the upper end of this stub shaft meshing with a gear ring 847 screwed to the underside of the bobbin stand.
  • cups 848 containing individual bobbins 850 of pattern yarn with their transparent protective tubes 849 are cups 848 containing individual bobbins 850 of pattern yarn with their transparent protective tubes 849, as shown in Fig. l.
  • Revolving with the bobbin stand inside the bobbin stand frame is a sleeve 851, and axially located in this sleeve is a bobbin stand shaft 852 projecting vertically both above andbelow the bobbinxstand frame.
  • the shaft projects upward beyond the tubes around the individual yarn bobbins to a level where the.yarn take-up bracket is located.
  • This take-up bracket 853 is fixed on the bobbin stand shaft and revolves with the bobbin stand.
  • the yarn take-ups are of the pivoted arm type in which tension springs tend to maintain the tension on the yarn.
  • the yarn is fed from the individual yarn bobbins to the usual tension discs 854 at the circumference of the take-up bracket, from there under a ring 855 to the long pivoted arm 856 with the yarn take-up spring 857.
  • each yarn passes downwardly in a long individual tube 858 through the yarn take-up bracket and ⁇ the bobbin stand sleeve until the yarns emerge a short distance above the latch ring 550.
  • a slotted pattern yarn finger ring 860 revolving with the bobbin stand and in which the pattern yarn fin ers 766, 767 and 768 are carried.
  • pattern yarn furnishing means are provided which cause the pivoted arm 856 of the yarn take-ups to draw from the bobbins 850 through the tension discs 854 enough yarn to Wrap the selected needles and kee it under the tension of the take-up spring 857 until required.
  • This means comprises/a tail 758 on each take-up arm 856 and a yarn-furnishing cam 7 60 on a post 761 projecting upwardly7 from the bracket 841 at the rear ofy the machine opposite the throat late 560.
  • the cam 760 lies in the path ci) the tails 758 and as the latter revolve they are pressed down under the cam and measure off into the take-up the yarn needed for the widest wrap pattern in the stocking.
  • the ⁇ lowest point of the cam 760 is opposite the post 761 on ,which it ismo'unted and therefore opposite the post 401 and the throat gte 560 (Figs. 2 and 13).
  • the ocking .over point is indicated by t e short arrow to the left of the throat plate pointing toward the center of the machine and it will ,therefore be noted that the yarn is drawn from the bobbin and the tension discs before the stitch is drawn. Therefore the only ten- Asion in drawing the stitch is that required to A pull down the take-up.
  • the wrap yarn is fed lat high speed without puckering ofthe fabric due to extra tensionon the wrap yarns. If the pattern for anyyarnjs' not lthat required for some other linger, the
  • These racking lever means include a racking lever 801, a toggle link 802 pivoted on the lower bed-plate B and a pawl 803 engaging"l teeth 804 at the bottom ofthe trick wheel 800 (Figs. 12 and 3).
  • the end of the spring 805 toward the trick wheel is on the bed-plate.
  • the pawl is ada ted to rack the trick wheel forward one toot in a counter-clockwise direction every time the pawl is retracted.
  • the trick wheel 800 is a vertical cylinder 65 mounted on the lower bed-plate ⁇ B near the vertical slots around its circumference in ⁇ which lie pattern jacks 810 having a series of butts at a plurality of levels which can be broken off as required to produce the necessary pattern in the well-known manner.
  • the slots in which the jacks 810 are carried are spaced apart a distance equal to the length of one of the teeth 804 so that each rack caused by the pawl will advance the trick wheel from one pattern jack to the next.
  • This trick wheel is adapted to carry the pattern indications for b oth the needles andthe pattern yarn fingers, the lower part of the trickwheel being adapted to take care of the needles and the upper part of thetrick wheel moving the vertical selector cam 750 forthe pattern yarn fingers.
  • Fig. 3 There is-a reader cam for each level o butts corresponding to the portion of theV trick wheel furnishing selections for the needles and each reader cam. furnishing selections for the needles has a nose 822 adapted to contact with butts on a cylinder jack.
  • Each needle reader cam 820 has an extension extending horizontally on the opposite side of the post 821 from the nose 822 and the cams are adapted to be tipped out of operative contact with the trick wheel jacks in groups by a plurality of idling levers 829.
  • idling levers 829 each controlling a group of needle reader cams.
  • the idling levers are actuated from the main pattern drum 120 by pull wires 830, 830 and pivoted bell crank levers or thrust rods 831, 831.
  • the lower group of needle reader cams is shown controlled by the lower pull wire 830 (Fig. 4) and the outer thrust rod 831.
  • Pattern yam finger selecting mechanism and 825 which have no noses 822 near the cylinder jacks (Fig. 4) but the rod on which the vertically movable selecting cam 750 rests is connected to each of these reader cams in the yarn finger or yarn color group by a linkage -which includes a rock shaft A832 or rock shaft sleeve 833 located at the back of the machine and extending from the left side of the machine where the reader cams are located to the vertical rod 754 underneath the vertically movable selector cam 750 on the right side of the machine.
  • a linkage - which includes a rock shaft A832 or rock shaft sleeve 833 located at the back of the machine and extending from the left side of the machine where the reader cams are located to the vertical rod 754 underneath the vertically movable selector cam 750 on the right side of the machine.
  • the connection from top finger reader cam 825 is by a long linkI 834 to a short lever 872 on the left end of the rock shaft sleeve 833 and a lever 838 from the right end of the sleeve to the lower end of the vertical pin 754.
  • the connection from the lower finger reader cam 825 is by a long link 834 to a short link 873 on the left end of the rock shaft 832 and a lever 839 from the right end of the shaft to the lower end of the vertical pin 754.
  • a tension spring845 attached to the lever 838 tending to hold the vertical pin 754 in its uppermost position.
  • the finger selector cam 7 50 therefore can be controlled from either reader cam 825 or 825 or both as desired.
  • the selector cam 7 50 is opposite the highest butt level of the pattern yarn fingers
  • the cam 750 is opposite the middle butt level or the pattern yarn fingers
  • the selector cam 750 is lowered to e level of the -space below the three butt levels of the fingers and there being no butts at this level the lingers are not swung across the needle circle.
  • the two pattern yarn finger reader cams 825', 825 are thrown out of action by the' movements of the bell crank levers 831', 831 which throw the groups of needle reader cams out of action.
  • To throw out the finger reader cam 825 there is a screw carried by the upper idling lever 829 which lies in line with the cam 825' and the movement of the idling lever 829 to brin its group of reader cams to idle position, tiorces" the screw 827 against the cam 825 and withdraws it from contact with the trick wheel as shown in Fig. 3. This movement also swings the lever 839 underthe vertical pin 754 to its lowermost position.
  • the finger reader cam 825 is thrown out of operative relation with the trick wheel by means of a stop 835 on the pull wire 830.
  • This stop takes against a depending lower end of the short lever 873 and pulls the long link 834 toward the rear ofthe machine when the bell crank lever 831 swings to the rear.
  • the machine contains the usual latch ring with yarn fingers F therein located in the throat plate for feeding the body yarns, these yarn fingers being pivotally mounted in the usual manner to raise the yarns out of action.
  • the attern or wrap yarns are fed to the needles t rough eyes 759 in pattern yarn lingers 766, 767, 768 mounted on horizontal pivots 859 and set in slots in a pattern yarn finger ring 860 revolving with and carried under the pattern yarn bobbin stand by the sleeve 851.
  • the yarn fingers are held in the slots in the ring by a spring band 769 and also a separate tension spring 815 for each finger (Fig. 1).
  • the tension springs are located just below the yarn finger ring 860 andy are fastened'to the tubes 858 andthe fin ers are adapted to swing pivotally outwar ⁇ across the needle circle.i
  • the normal position of these fingers, in the ⁇ example shown in the drawings, is with the lowerv or feedigends of the pattern yarn fingers inside the needle circle.
  • the yarn fingers are adapted to be swung radia ly outward across the needle circle for the purpose of feeding the yarn vto the needles by means of the above-mentioned selector cam 7 50 shown in Fig.
  • this verticall movable cam being mounted on a sleeve 51 which sleeve is vertically ⁇ movable on a stationary pin 752 depending from the stationary frame of the bobbin stand.
  • This vertical pin 7 54 is guided by a bracket 755 carried by the support for the driving mechanism of the bo in stand.
  • the pattern yarn finger ring 860 revolves in unison with the needles and the relative movement of the yarn around the. needles is obtained by ⁇ means of another element.l An example of 'such element will be described next.
  • ⁇ consists vof a'stop or abutment fixed on the latch ring and extending across the needle circle at a distance from the main yarn feeding point and adapted to carry each pattern yarn into contact with the selected needles as the relative rotation between the needles and the knitting cams takes place.
  • This abutment is shown as a plate 870 adjustably screwed on the top of the latch ring 550 and having a hook or inverted U end iitting over the hooks of the needles at the desired point in the circle, as shown in Figs. 8 and 9, and leaving a space through which the selected needles move when taking a pattern yarn.
  • the downwardl bent inner end or side 871 or the U on the mside of the. vneedle circle extends circumferentially foris bevelled back slightly inside the needle' circle in order to permit the yarn to slide -ofl' the abutment at the proper'time (Fig.
  • a guard or apron 2O is mounted inside the needle circle (Fig. 2). This ard is shown as a segmental ring or apron ginning before the lmocking over point and ending at a point'after the beginning of the abutment 870 (see Figs. f2, 5 and-10).
  • the end of the guard near the throat plate .terminates in a wire 21 connected to the latch ring.
  • the 4upper edge'of this ring is leo formed'as a guard with certain parts high enough to hold the pattern yarn above the needles not'A specially elevated to take the lwrapping yarns.
  • This maintaining cam preferably does not act on thev upper end of the yarn finger but is mountedA on the latch ring as shown at 763,*in the' drawings.
  • this.maintaining cam 763 is screwed to the upper surface of the latch ring adjacent the abutment 870 in such a position that the yarn linger will come opposite it circumferentiall about the time that the finger reaches the a utment in its counter-Cloe se movement, and the cam as to come to an end ng over point.
  • this upstanding edge 1 In its maintaining cam has an against the outside f beforel the. knoc simplest form this upstanding edge 1 and therefore necesgers would be held out ⁇ to allow so much blind space.
  • the maintaining cam means adapted to act with still greater selectivity b having the maintaining cam stepped, with its tail or end lportion 765, i. e., the end nearest the knoc ing over point, lower than the end 764 which engages the linger first.
  • the yarn lingers which are long enough to engage the maintaining cam are of varied length.
  • the fingers 766 are lon enough to remain in contact withthe maintainin cam after they have passed the step.
  • the intermediate length fingers 767 are of a length which will permit them to snap back across the circle when the finger passes the step and goes from the high part 7 64 to the low art 765 of the cam.
  • the short fingers whic do not enga e the maintaining cam at all are numbere 768.
  • Fig. 14 is shown the relations of the upper and lower ends of the various kinds of striping yarn lingers to the selecting cam 750 and maintaining cam 763 qat various oints.
  • a lon finger 766 fore the butt on the upper en of the linger has ridden olf the selecting cam 750 and allowed the tip of the finger to fall against the maintaining cam.
  • the linger 66 is approximately in the position of the finger shown in Fig. 6.
  • the intermediate length of finger 767 is shown in section in Fig. 8 after itsl release by the selecting cam but while the finger is resting against the high part 764 of the maintainingA cam.
  • Fig. 10 is shown in side elevation the position of an intermediate length finger 767 shortly before it reaches the end of the high surface 764 of the cam, the yarn at this point having been drawn under the hooks of the group of selected needles, but the yarn finger not yet having snapped back across to the-inside of the circle.
  • the hoi'izontal arrow in this ligure indicates the direction of movement of the needles and striping yarn fingers.
  • the short finger 768 needles have passed. This gives an accurate which is not long enough'to reach' the maintaining cam at all, is shown in Fi 9 and Fig. 5, it being shown in Fig. 9 be ore it is snapped -back to the inside of the needle circle and on the left in Fig. 5 after it is snapped back ⁇ across the circle.
  • Fig. 6 the final position of the yarn after the selected needles, n2 i. e., those below the tail 871 of the abutment and corresponding to the stripe p--2 of Fig. 5.
  • the selector cam is employed to push the fingers out to lay the yarns in front of the abutment and the maintaining cams are used to hold .the pattern yarn fingers out until all the pattern and controlled release of the, yarn fingers so that they may be snapped back to the inside of the needle circle by the spring 815 on the plate 860.
  • these forms of selectivity of the invention permit yarn fingers which are feeding yarn to a small group of needles to sna back across the circle before the time or the vnext finger to come out has arrived--thus avoiding any possibilit of the yarn in the second finger being lald across the needle circle and coming into engagement with the abutment before the first yarn hasv been taken off the abutment by the snapping ofY the first yarn finger back to the lnside of the needle circle.
  • the ring which carries thel yarn fingers is slotted with, say, eighty slots to permit yarn fingers to be located or concentrated at any desired point vbut it is not ordinarily intendedf to use allthe -slots at once.
  • some of the yarn lingers are located in pairs in adjacent slots 4.widths and locations of panels indicated, for
  • a vpivotally mounted idling plate 812 having thereon surfaces which do not project radially beyond the rack wheel teeth and other surfaces which do project.
  • One surface on this plate 814 projects beyond the teeth far push the pawl 803 back out of contact with all the teeth 804, thus causing the pawl to idle back and forth Without turning the rack wheel.
  • Another surface 813 on this plate pushes the pawl away from the rack wheel sulliciently to be out of the path of the low tooth 804 and not enough to be out of the path of the remainder of the teeth 804. that when this intermediate surface engages the pawl the trick wheel will revolve until 'the pawl reaches the low tooth.
  • Thisl low tooth designates the beginning of the pattern of the stocking and therefore, when thc rack wheel ceases to revolve while the pawl idles over 'the low tooth, the rack wheel is ready to begin the pattern of the stocking.
  • the high surface 814 which disengages the pawl from all the teeth 804 suspends the patterning during the heel of the stocking no matter at what point Athe patterning
  • the mechanism operating this plate may be of' any desired kind, it being necessary merely to provide means for pivoting the plate about the center of the trick wheel sufficiently to bring these various surfaces into line'with the end of the pawl. but in the drawing we have shown the bell crank lever connection running to the disc cam 816 on the shaft 80 which lcarries the drive gear 122 for the pattern drum 120 (Fig. 4a). Such a use of this shaft is shown in the patent to E. E. Paquette, No. 1,723,881, datedv August 6th, 1929.
  • the wrapping mechanism bias been idle.
  • the pawl v803 hasbeen idling, back and forth over the low tooth 804 of the series of trickvwhel teeth 804, being held from engagement with the low tooth by the intermediate surface 813 and the idling plate 812.
  • the reader cams 820, 825, 825 for the needle selecting and the pattern yarn finger (i. e.,'color) selecting are held disengaged from the trick wheel 800 by-means of th' thrustl rods 831 and 831 which areinl thei extreme left positions as they appear in Fig. 4. In this position the pull wire 830 Aon the thrust rod 831 turns ion 'los
  • the lowermost idling'lever 829 counter-clockwise and holds the cam 825 radially inward.
  • the reading tails 823 of this group of needlev selecting cams are beyond the range of the butts on the jacks 810 in the trick wheel.
  • the thrust rod 831 holds the short ink873 to the left by virtue of the stop 835, and the long link 834 connected to the short link 873 pulls the lower of the two pattern yarn finger or color selecting cams radially inward so that its reading tail 823 is also beond the range of the butts on the jacks 81() 1n the trick wheel.
  • the idling lever 829 is itself actually below the extreme end of the tails of the two finger or color reader cams and, therefore, does not contact with those tails directly.
  • the pushing of the uppermost finger or color reader cam 825' to inoperative position by the screw 827 also serves to move the long line 834 and the short lever 872 in such manner as to turn the rock shaft 833 and lower the lever 838, lthe pin 754 and the sleeve 751.
  • the pattern yarn finger selecting cam 750 drops to its lowermost position where it is opposite the gap underneath the three selecting butts on the upper 'ends of the yarn fingers.
  • the thrust rod whenv n its extreme left position also serves to ⁇ hold the lower of the two finger reader cams out of S10. This is accomplished through the stop 835, short lever 873 and long lever 8,34, Vconnecting the short link 873 with the lower of the two reader cams for the pattern selectf ling fingers.
  • the patterning is commenced by a rack on the main pattern drum which releases one or both vof the thrust rods 831, 831 from their extreme left position, turning the idling levers 829 to release the needle reader cams 4820 and through the stop 835 and levers 834 and 834 bymeans of the springs 824 also bringing one or both of the reader cams for the pattern selecting fingers into operative relation with the trick wheel.
  • This same rack also serves to turn the idlin plate 812 till no surface is op osite the paw 803 with the result that t e spring 805 brings the pawl into engagement with the low tooth'804 and the trick wheel begins to rack and bring the pattern selections of the trick wheel jacks 810 under the reading tails 823, the pattern yarn finger and needle reader cams 820.
  • any of the needle reader cams reaches a point on the trick Wheel where a butt is missing from one of the jacks 810 it drops againstl the surface of the trick wheel proper and its nose 822 presses radially inward against the butts of the cylinder jacks 736. This brings the cylinder jack in line with the raising cam (not shown? which raises the jack and needle to se ective level in the Well known manner.
  • a long finger 766 may be used in which case the finger will not snap back across the needle circle until it reaches the end of the low part 765 of the maintaining cam nearest the throat plate.
  • the varying amount of pattern yarns required for wrapping these groups of greatly different sizes is obtained automatically from the take-ups as needed as follows: Prior to the-time that the yarn finger for any selected group of needlesreaches the knocking over point the tail 758 of its takeup arm 856 passes under the yarn measuring cam 760, raising the arm 856 and drawing the maximum amount of yarn necessary to wrap any one of the groups of needles to be selected in the pattern setup on the lower part of the trick wheel. The measuring cam having drawn this maximum amount .from
  • the yarn can be delivered to the needles rapidly and under the tension solely of'the.
  • the operative face of the selector cam 7 50 is comparatively short and it can be changed from one level to another without requiring toogreat separation of the yarn fingers in the ring 860 to permit it to make the change. It obviously is one of the advantages of the invention that a ⁇ great-many patterns can be put in the stocking of varied. width with yarn changes from course to course in the same wales without unnecessary spacing between the patterns or figures.
  • the patterns set up on the trick wheel can be so arranged that by alteration inoperative position of the two pattern yarn finger reading cams a sequence of selections for the pattern yarn fingers can be obtained which is double the number of jacks in the trick wheel.
  • two different series or sequences of selections of needles can be set up in the trick wheel totalling in number twice the number of the jacks in the trick wheel, this being obtained by using the idling levers 829 in alternation.
  • a greater number of idling levers or pattern yarn finger reader cams can be used, if desired, to obtain still greater lengths ofy patterns.
  • a knitting machine having a circle of independent needles, means for selecting needles for wrapping, pattern yarn fingers and finger selecting means adapted to cause a finger to lay a pattern yarn in front of a selected needle or needles in combination with means selecting and holding across the needle circle after said finger selecting means have released Same, certain of the fingers chosen by the linger selecting means, for the purpose of varying the length of wrap.
  • a circular knitting'machine having independent needles, means for raising 4needles selectively, a pat-tern yarn linger, finger selecting means adapted to cause said finger to la'y a pattern yarn in front of a needle or needles raised by said needle selecting means, an element having circumferential movement relatively to the needles and adapted temporarily to hold against said raised needles the pattern yarn laid in front of them, in combination with means maintaining the yarn in front of the selected needles after release of the finger by the finger selecting means.
  • a circular knitting machine having a circle of independent needles, means for raising needles selectively, and pattern yarn fingers adapted to lay yarn across the needle circle for wrapping purposes in combination with an element having circumferential movement relatively to the needles and circle of independentl needles, means for raising needles selectively, a yarn finger adapted to lay a wrapping yarn in front of a needle or needles raised by said needle selecting means, and an element having ,circumferential movement relatively to the needles and adapted to wrap on said selected needles the pattern yarn laid in front of them, in combination with finger selecting means adapted to cause said finger to lay the pattern yarn in front of the selected needles, and other means adapted to maintain said finger in the position given it by the finger selecting means after its release by the latter.
  • a circular knitting machine having -a rotary circle of independent needles, means for selectively raising said needles and a plurality of pattern yarn fingers pivotally supported above the needles, means for rotating said fingers in unison with thencedles, in combination with finger selecting means adapted to cause the feeding ends of said fingers to lay pattern yarns in front of needles thus selected at a point on the needle circle different from the main yarn feed, and a maintaining cam adapted to act on the lower end of certain of the fingers chosen by the finger selecting means and maintaining same outside the needle circle for a longer length of travel.
  • a circular knitting machine having a rotary circle of independent needles, means for raising a selection of needles at a point on the needle circle different from-the main yarn feed, a main yarn feed, a plurality of pattern yarn fingers whose feeding ends are of different lengths, in combination with selecting means adapted to cause the feeding ends of said fingers to lay the yyarn across the needle circle, a stationary labutment adapted to engage the yarns thus laid across the circle and to cause them to be wrapped, and a maintaining cam adapted to hold the feeding ends of the longer of said fingers in the position given it by the selecting means after they have reached said abutment.
  • a circular knitting machine having a revolving needle cylinder, independent needles in said cylinder, a main yarn finger and a plurality of pattern yarn fingers pivotally mounted above said cylinder, revolving in unison therewith and adapted to vibrate across said circle of needles for the purpose of laying wrapping yarns across said circle,
  • a circular knitting machine having a revolving needle cylinder, independent needles vertically movable in said cylinder, means for raising said needles selectively for pattern purposes, pattern yarn fingers adapted to lay yarns across the needle circle by movement from the inside to the outside thereof, said yarn fingers rotating with said needles, a stationary abutment adapted to lie in the path of and arrest the pattern yarns thus laid across the circle, in ucombination with a stationary cam located adjacent the said abutment adapted to hold outside the needle circle for a definite period of time, fingers which have laid yarn across the needle circle.
  • a circular knitting machine having a circle of independent needles, means for raising the needles selectively, radially movable yarn fingers for laying a pattern yarn in front of the needle or needles thus raised, said yarn fingers being of different length, in combination with an element having circumferential movement relatively to the needles and adapted temporarily to hold against said raised needles a pattern yarn laid in front of the'latter, and a stationary cam having circumferential movement relatively to the needles, having high and low p'oints adapted to cooperate with the fingers of different lengths to vary the lengths of time that the yarn fingers are held across the needle circle.
  • a circular knitting machine having a revolving circle of independent needles, means for raising needles selectively, yarn fingers of different length adapted to lay Wrapping yarns across the needle circle, and a vertically movable selector cam for said ngers, in combination with a cam outside the needle circle adapted to engage certain of said fingers and maintain them across the circle for varied lengths of travel after their release by said selector cam.
  • a circular knitting machine having a rotary circle of independent needles
  • a knitting machine having a circle of independent needles, means for raising needles selectively, pattern yarn fingers adapted to lay yarns across the needle circle for wrapping purposes and selecting butts s at various levels on said ngers, the yarn feeding ends of such ngers being of differentlengths, in combination with a selector cam for said butts adapted to change butt levels between selections of lingers, and means adjacent the needle circle adapted to select fingers according to the length of their ⁇ yarn fee ing ends and maintain them across the circle after their release by the selector cam.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US522450A 1931-03-13 1931-03-13 Machine for making knitted fabric Expired - Lifetime US1906204A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US522450A US1906204A (en) 1931-03-13 1931-03-13 Machine for making knitted fabric
DES102949D DE611514C (de) 1931-03-13 1932-01-28 Umlegeverfahren und Rundstrickmaschine zur Herstellung von Plattiermustern
FR732164D FR732164A (fr) 1931-03-13 1932-02-23 Procédé et machine pour la fabrication d'articles tricotés
GB7100/32A GB383840A (en) 1931-03-13 1932-03-09 Improvements relating to making wrapped pattern knitted fabric

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US522450A US1906204A (en) 1931-03-13 1931-03-13 Machine for making knitted fabric

Publications (1)

Publication Number Publication Date
US1906204A true US1906204A (en) 1933-04-25

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Application Number Title Priority Date Filing Date
US522450A Expired - Lifetime US1906204A (en) 1931-03-13 1931-03-13 Machine for making knitted fabric

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Country Link
US (1) US1906204A (fr)
DE (1) DE611514C (fr)
FR (1) FR732164A (fr)
GB (1) GB383840A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422232A (en) * 1945-07-27 1947-06-17 Hemphill Co Wrapping mechanism
US2528067A (en) * 1947-08-14 1950-10-31 Adams Millis Corp Wrap stripe and plating mechanism and method
US2555870A (en) * 1945-12-18 1951-06-05 Scott & Williams Inc Knitting machine
US2728210A (en) * 1954-04-12 1955-12-27 Piedmont Hosiery Mills Inc Tuck and wrap knitting apparatus
US2911806A (en) * 1957-12-31 1959-11-10 Burlington Industries Inc Two-feed knitting machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111118676B (zh) * 2020-01-17 2023-06-06 山东宏业纺织股份有限公司 一种细纱机的齿轮选型方法及细纱机

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422232A (en) * 1945-07-27 1947-06-17 Hemphill Co Wrapping mechanism
US2555870A (en) * 1945-12-18 1951-06-05 Scott & Williams Inc Knitting machine
US2528067A (en) * 1947-08-14 1950-10-31 Adams Millis Corp Wrap stripe and plating mechanism and method
US2728210A (en) * 1954-04-12 1955-12-27 Piedmont Hosiery Mills Inc Tuck and wrap knitting apparatus
US2911806A (en) * 1957-12-31 1959-11-10 Burlington Industries Inc Two-feed knitting machine

Also Published As

Publication number Publication date
DE611514C (de) 1935-03-30
GB383840A (en) 1932-11-24
FR732164A (fr) 1932-09-14

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