US3292393A - Pattern control arrangement for circular knitting machines - Google Patents

Pattern control arrangement for circular knitting machines Download PDF

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Publication number
US3292393A
US3292393A US361310A US36131064A US3292393A US 3292393 A US3292393 A US 3292393A US 361310 A US361310 A US 361310A US 36131064 A US36131064 A US 36131064A US 3292393 A US3292393 A US 3292393A
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Prior art keywords
needle
locking
elements
carrier
cam
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US361310A
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English (en)
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Ribler Erich
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FRANZ MORAT K G
MORAT KG FRANZ
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MORAT KG FRANZ
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
    • D04B15/68—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used
    • D04B15/78—Electrical devices

Definitions

  • the present invention relates to a pattern control arrangement for a knitting machine, and more pa-rticularly to a program controlled apparatus provided at one or several knitting stations of a circular knitting machine for placing selected needle-influencing elements in an operative position for the purpose of shifting correlated needles to the knit position.
  • non-selected needles are not shifted, or are shifted, for example, to the tuck position so that a predetermined pattern is knitted by the needles of the machine.
  • a pattern wheel is provided at each knitting station and mounted for rotation about an axis inclined at a small acute angle to the axis of the kniting machine so that needle-influencing elements, commonly termed jacks raise the cylinder needles while moving in a plane slanted to the direction of movement of the cylinder needles.
  • needle inuencing elements or jacks are mounted in the pattern wheels .for movement in axial direction and abut the knitting needles and shift the same directly to the advanced position when moving to the operative position.
  • Pattern wheels with needle-induencing elements moving in the direction of the needles can also be provided for the dial of a circular knitting machine for operating the dial needles in accordance with a predetermined pattern.
  • Another object of the invention is to provide a pattern wheel in which program controlled electro-magnetic means select or reject the needle-influencing elements.
  • a related object of the invention is to tension a spring acting on each needle-inuencing element before the respective element arrives at a select station, and to release the spring at the selecting station so that the movement ice of the element toward the operative position is accomplished by the released spring force.
  • Another object of the invention is to lock each springloaded element before the same arrives at a selecting station, and to unlock or release selected elements at the selecting station for movement toward the operative position.
  • Another object of the invention is to provide a pattern control arrangement in which selected Vlocked springloaded elements are unlocked and released at a selecting station by electromagnetic means which are energized and de-energized in accordance with a predetermined pattern.
  • the present invention relates to a pattern control arrangement for ⁇ a knitting machine, preferably a circular knitting machine having a cylinder with Vcylinder needles, and a dial with dial needles.
  • One embodiment comprises rotary carrier means, which may be part of a pattern wheel or part of the knitting cylinder of the machine; a set of needle-induencing elements supported on the carrier means for rotation therewith past at least one selectingvstation, and for movement thereon between an inoperative position, and an operative position adapted to displace a correlated needle either after turning to an operating station, or directly by moving in the same direction as the needle; biasing means, preferably 'a set of independent springs, biasing the needleinuencing elements to move toward the operative position; locking means, preferably a set of locking springs respectively cooperating with the needle-inlluencing elements for locking non-selected elements in the inoperative position, and for releasing selected elements for movement toward the operative position; and control means, preferably a program controlled electromagnetic means located at the selecting station for moving
  • Cam means are provided on the stationary support of the carrier means for moving the needle-influencing elements to the inoperative position .before each element arrives at the selecting station so that the respective locking spring can lock the element in the inoperative position.
  • a stationary cam moves the locking springs to the releasing position before the selecting station where the electromagnetic means hol-d locking springs-cooperating with selected needleinfluencing elements in the releasing position but permit the locking -springs of non-selected elements to remain in the locking position holding the respective needleinfluencing element in the inoperative position while passing through the selecting station.
  • the operation of the locking springs by electromagnetic means is preferred, mechanical means or Huid operated means may be provided at the selecting station for operating the locking means.
  • mechanical means or Huid operated means may be provided at the selecting station for operating the locking means.
  • the movement of the needle-influencing elements toward the operative position is accomplished by the energy stored in biasing means before each needleinfluencing element arrives at the selecting station.
  • the stored force of the biasing means is used for moving the respective needle-influencing element to an intermediate position only, and a stationary cam effects movement of needle-inuencing elements from the intermediate position, to the operative position, which is particularly advantageous if the needle-induencing elements shift correlated needles directly durin-g movement Ifrom the intermediate position to the operative position so that the :biasing means do not produce the vforce required for ⁇ shifting the needles.
  • the stored force of the biasing means is advantageously used for moving the needle-influencing elements all the way to the operative position.
  • FIG. 1 is a fragmentary schematic side view
  • FIG. la is a fragmentary schematic front view illustrating a circular knitting machine with a pattern wheel arrangement to which the embodiment of the invention shown in FIGS. to 7 is applied;
  • FIG. 2 is a fragmentary schematic side view illustrating a circular knitting machine with a pattern wheel arrangement to which the embodiment of the invention v illustrated in FIG. 10 is advantageously applied;
  • FIG. 3 is a fragmentary schematic side view of a circular knitting machine provided with a pattern control arrangement to which the embodiment illustrated in FIGS. 8 and 9 is advantageously applied;
  • FIG. 4 is a fragmentary schematic sectional view of a circular knitting machine provided with a pattern control arrangement according to the invention.
  • FIG. 5 is an axial sectional view illustrating a pattern
  • Carrier member 7 has a set of radially extending grooves in which needle-inuencing elements or jacks 1 are mounted for radial movement.
  • Carrier member 7 has projecting teeth 7 which are arranged alternating with and staggered to the needle-influencing element 1 and mesh with butts, not shown, of cylinder needles 2 so that the carrier With the needle-influencing elements 1 rotates in synchronism with the needle cylinder.
  • a locking spring 9 is correlated with each 'needle-influencing element 1, each locking spring 9 registering in a radial plane with the corresponding needle-influencing element 1.
  • locking springs 9 are clamped between the annular plates 10a and 10, while the locking end portion 9b of each locking spring 9 has a projection located opposi-te a recess 1c in the respective element 1. recess 1c and the corresponding locking portion 9b are slanted.
  • a set of biasing springs 11 is disposed on the lower side of carrier 7, each biasing spring 11 registering with a needle inuencing element in a radial plane and having a curved end portion engaging a recess 1a in the correlated element 1.
  • the inner ends of the biasing springs 11 are secured to carrier member 7 by the annular shielding plate 12.
  • FIG. 6 is a fragmentary developed sectional view taken on line VI-VI in FIG. 5;
  • FIG. 7 is a fragmentary developed plan view taken on line VII in FIG. 5;
  • FIG. 8 comprises a series of fragmentary axial sectional views 8A, 8B, 8C, 8D, 8E taken in angularly spaced radial planes passing through the axis of the needle cylinder of a circular knitting Imachine constructed in accordance with another embodiment of the invention;
  • FIG. 9 is a fragmentary developed view taken in the direction of the arrow 9 in FIG. 8 and illustrating the shape of the cams on the cam cylinder of the machine.
  • FIG. 10 is an axial sectional view illustrating a pattern wheel according to a further embodiment of the invention.
  • FIGS. 1 and la illustrate a circularl knitting machine with a needle cylinder 3 turnable about a vertical axis Y--Y and having axially extending grooves in which cylinder needles 2 are guided for vertical movement.
  • a pattern wheel is mounted vfor turning movement about an axis X-X which is inclined at an acute angle to the axis of the needle cylinder, as best seen in FIG.
  • a support includes a xed axle 6 whose axis X is inclined to the axis of the needle cylinder and to the needles 2, as explained with reference to FIG. 1a.
  • a carrier means includes a hub 8 turnable about axle 6, a carrier member 7 xed to hub portion 8, a lower plate 12 secured by screws 12a to carrier member 7, and two upper annular plate members 10 and 10a secured by screws 10b to lcarrier member 7.
  • Each element 1 can be shifted to an inner position in which end portions 1b are spaced from butts 2a, and in this inoperative position, the locking portions 9b are located opposite recesses 1c, and biasing springs 11 are tensioned and store energy so that the respective element 1 tends to move from the inner inoperative position to the outer operative position.
  • Each locking spring 9b has a locking position in which locking portion 9b is located in the recess 1c of the correlated element 1 and holds the same in the inoperative position, but each locking spring 9 can be moved to a releasing position illustrated in FIG. 5 in which the biasing spring 11 of the respective element 1 is free to shift the respective element 1 to the -outer operative position.
  • Locking springs 9 are tensioned in the illustrated releasing position and tend to move the locking position in which locking portion 9b is located in recess 1c.
  • a fixed annular member 13 is secured to the supporting axle 6 and covers the upper surface of rotary carrier means.
  • Member 13 is for-med with a peripheral cutout 14 in which electromagnetic means 15 is mounted which includes two outer continuously energized magnets 15a and 15e, and an electromagnetic selector means 15b whose core cooperates with the outer end portion of each locking spring 9 when the locking springs successively pass electromagnetic means 15b during rotation of the carrier means about axis X relative to the fixed member 1-3.
  • Cutout 14 is closed by a member 14a, and a ring-shaped support 16 is secured to member 13 and member 14a by screws l16a and has an inner lian'ge with two cams 17 and 18.
  • cam 18 is located under the end portions of locking springs 9 and has a raised portion 18a before the selecting station S.S. where the electromagnetic means 15 is located.
  • each locking spring sliding along the raised portion 18a of cam 18 will Ibe pressed to the tensioned releasing position illustrated v in FIG. 5.
  • the end of the camtrack of cam portion 'end of cam portion 18a it is still held :by the magnetic means 15a, sliding on the same, until arriving at the electromagnetic selector means 15b which is energized and deenergized in vaccordance with a program.
  • the respective locking spring 9 will slide on the armature of electromagnetic means 15 until arriving at magnetic means 15o, which is permanently energized, and holds such a locking spring 9 in the position 9 until the respective locking springs moves to a position located under a portion of lixed member 13 where it is released and assumes its normal lower position. If the respective correlated needle-inuencing element 1 is in the outwardly advanced operative position, docking portion 9b cannot snap into recess 1c, but will abut the upper edge of the respective needle-influencing element 1. However, if the respective needle-influencing element 1 is in the inner inoperative position, locking portion 9b will fall into recess 1c and lock the respective needle-influencing element in the retracted inoperative position.
  • cam 17 has a raised inwardly projecting portion preceding the selecting station S.S., and since during rotation of the carrier means all needleinfluencing elements 1 will engage cam 17 with shoulders of recesses 1d, all elements 1 are moved inwardly to the retracted inoperative position before arriving at t-he selecting station S.S.
  • Cam 17 has a slanted end face 17a so that each needleinuencing element 1" whic-h was not locked in the inoperative position -by a :locking spring in the position 9 is free to rapidly move in outward direction under the action of the respective biasing spring 11 which was tensioned when the respective needle-iniiuencing element 1 was inwardly pushed by cam 17 in the region before the selecting station S.S. where the electromagnetic selector means 15b is located.
  • the carrier means of the pattern wheel turns further beyond the selecting station with elements 1 arranged in operative and inoperative positions in accordance with the predetermined pattern.
  • the thus arranged elements 1 move along a plane slanted to the direction the cylinder needles 2, as best seen in FIG. la, and, consequently, the operative needle elements 1 raise the respectivecorrelated needles to the knit position.
  • Selected locking springs 9" in operative positions will be released by magnetic means 15C after further turning movement and will assume a position in which locking portion 9b abuts the upper edge of the correlated element 1.
  • Locking springs 9 of needle-influencing elements in operative position will remain in this position until the respective element 1 has turned with the carrier means almost one revolution and is again engaged by cam 17 and pressed to the retracted inoperative position so that locking portion 9b can snap into the recess 1c before arriving at the selecting station.
  • the electromagnetic selector means 15b is energized by command impulses received from a program means which is controlled .by a tape or by a Jacquard device. The speed of the tape, and the spacing of the control marks on the tape or card are selected in such a manner that a command signal can be given, or not given, whenever a needle inuencing element 1 and the correlated locking spring 9 passes the selecting station with electromagnetic selector means 15b.
  • This arrangement is known and corresponds to t-he manner in which the electromagnetic selector means of the U.S. Patent 3,079,775 is controlled.
  • FIGS. 5 to 7 disclose an arrangement in which biasing springs 11 shift selected needle-inuencing elements 1 all the way to the operative position, but it is possible to modify the arrangement by permitting the biasing springs to shift the needle-influencing elements only to an intermediate position where selected elements 1 are engaged by a cam which gradually moves selected elements outward to the operative position, similar to the arrangement which will now be described with reference to FIGS. 8 and 9.
  • the carrier means for needleinuencing elements 1i forms part of needle cylinder 3 which has axially extending peripherally spaced grooves 3'a in which cylinder needles 2 are mounted for axial movement.
  • a cam cylinder 230 carries inner stationary cams 130 and 121 cooperating with butts 2 of needles 2 and located at a higher level, and cams 122 and 120 cooperating with projections or butts 1i of needle-influencing elements 11' and located at a lower level. It will be nderstood that the cams extend substantially around the inner surface of the cam cylinder 231), and that the butts of the needles and the needle-inlinencing elements move along the cams during the rotation of needle cylinder 3'.
  • Section 8A shows an element 1i in an inoperative position, while being urged by a biasing spring 111 to move upwards toward the foot end 2" of the correlated needle 2 whose butt 2' rests on cam 130, as also shown at A in FIG. 9.
  • Each element 1i cooperates with a locking spring 199 whose lower end is ixed to the carrier portion of the needle cylinder by a ring-shaped member 131.
  • the upper locking portion 109b of each locking spring 109 abuts one edge of the correlated element 1i while being resiliently tensioned.
  • cam 120 has moved element 1i to an even higher operative position, and since element 11' engages needle 2, needle 2 is shifted simultaneously to the knit position while its butt engages the lower face of stitch cam 121 which, as best seen in FIG. 9 lowers the needle until the same slides again on cam 130 in the lower cast olf position.
  • a return cam portion 122a of cam 122 engages projection 1i of element 1i to move the same downwardly to a retracted inoperative position, and since cam 122a merges into cam 122 which extends around the entire circumference of the cam cylinder, all needleinfluencing elements 1i will arrive at A in FIG. 9 in the position shown in section 8A.
  • Region B of FIG. 9 corresponding to section 8B, is a selecting station where an electromagnetic means is provided.
  • Electromagnetic means 115 includes two continuously energized magnetic means 115a and 115e, and an electromagnetic selector means 11Sb having an armature cooperating with locking portion 109b of each locking spring 109 which passes electromagnetic selector means 11Sb at a selecting station. While only one selecting station is illustrated in FIG. 9, it will be understood that several selecting stations may be provided around the circumference of the needle cylinder, each selecting station being provided on a knitting station of the circular knitting machine. The configuration of cams 122, 122a, 130 and 121 will correspond at each knitting station and selecting station to the configuration shown in FIG. 9.
  • Cam 122 extends around the inner surface of the cam cylinder in a plane perpendicular to the axis of the needle cylinder 3, but in the region of the selecting station S.S., cam 122 has an upwardly slanted cam portion 122', followed by a gap 132 between cam portion 122' and a raising cam 120 which has a rising portion between points C and D in FIG. 9.
  • Cam 120 terminates after point D and is followed by the return cam 122a at point E.
  • Cam 130 extends also in a plane .perpendicular to the axis of the needle cy'linder to point C and has between points C and D a rising cam portion 130:1 which is designed to raise a needle whose butt 2 slides thereon to the tuck posi-tion. Needles passing over the end of cam -portion 13011 will be engaged by the lower face of stitch cam 121 and guided to a position in wlhioh the butts thereof slidingly rest on the horizontal cam 130.
  • non-selected elements 1i l will reach return cam portion 122a in the locking position shown in section 8B in which locking portion 109b is Ilocated in the corresponding recess lic in a locking position, as shown in section 8B.
  • the downward slanting cam portion 122a will push elements 1i in this position downwardly to the position shown in section 8A so that the slanted shoulders of the -respective recess lic will also push the ⁇ locking portion 109b out of the recess and to a position slidingly engaging the edge of the respective element 1, as shown i n section 8A.
  • All needle-inuencing elements 1i arrive in the region of the selecting station at point B in the position shown -in section 8A, and since the biasing springs 111 are tensioned in this lower inoperative position of elements 11', project-ions 1i' press against the 'lower cam 'face of cam 122, and all elements 1i Amove upward to an intermediate position while the projections 1i' slide along the short upwardly slanting cam portion 122'.
  • Magnetic means 115:1v is a permanent magnet which acts on all locking springs 109 to hold the same in the position shown in section 8A, or to lbend 'locking spring 109 away from element 1i and to a position slidingly abutting magnet 11511. Immediately thereafter, the locking spring moves with the rotating needle cylinder to a position located opposite electromagnetic selector means 11Sb, and a selection is now made according to whether electromagnetic means b is energize-d, or not energized from the ,program control device of the machine.
  • needle-intluencing elements which are not selected, pass electromagnetic selector means 115b while the same is de-energized, and resiliently snap into the recess lic of the respective correlate-d element 1i and assume the position shown in section 8B.
  • the non-selected elements 1i remain in the locked condition shown in section 8B while the needle cylinder
  • the locking spring 109 of a selected element 1i l is Iheld by the energized electromagnetic selector means 115b, so that a selected e-leme-nt 1i is moved Iby its biasing spring 111 in upward direction until its upper end engages the lfoot portion of the corresponding needle 2 while projection 1i' moves through gap 132.
  • the needle In the regionD, the needle is in the knit position, and its butt 2 is engage-d by the lower surface of the downwardly slanted stitch cam 121 so that the needle is lowered positively runtil butt 2' rests on the upper surface of the horizontal cam portion 130, remaining .in this position until approaching the next selecting station.
  • llocking portion 109b momentarily snaps into the corresponding recess lic during the downward movement of the previously selected element 1i, but is pushed out again 'by the slanted shoulders of the recess to assume the .position shown in section 8A.
  • One selecting station provided with electromagnetic means 115 is illustrated, and corresponding selecting stations are provided along the periphery of the needle cylinder, the number of the selected and knitting stations depending on the type of machine.
  • Circular knitting machines .for knitting hosiery will have fewer knitting stations requiring selection than very large machines having a great needle cylinder diameter.
  • the cylinder needles are not raised to the knit position due to the inclination of the pattern wheel axis to the axis of the needle cylinder, as described with reference to FIGS. 1,
  • support means include a stationary cylindrical member 213 which is secured to a stationary member 206 mounted on the frame of the knitting machine.
  • Cylindrical member 213 defines an axis of rotation Z about which annular carrier means 207 rotate.
  • Member 213 and the carrier means can be together removed from the cylindrical support 206 if it is desired to replace or repair the pattern wheel.
  • Cylindrical member 213 has a cutout 213:1 in which electromagnetic means 215 are mounted.
  • Electromagnetic means 215 include an electromagnetic selector means 215b, and two permanently magnetized electromagnetic means 215a arranged on opposite sides of electromagnetic selector means 215b in circumferential direction, substantially as described with reference to FIGS. 6 and 9.
  • An annular member 216 is secured ⁇ to cylinder member 213, and has two cams 217 and 218 performing the functions of cams 17 and 18 described with reference to FIG. 5.
  • Cams 217 and 213 are located in horizontal planes extending perpendicularly to the axis Z of the rotary carrier means 207, cam 217 having a downwardly slanting cam ⁇ portion ending in the region of the selecting station represented by electromagnetic selector means 215 corresponding to the shape of cam 17, 17a in FIG.
  • cam 218 has an inwardly rising radial cam portion terminating in a circular cam track concentric with axis C so that the shape of cam 4218 corresponds to the shape of cam 18 shown in FIG. 6, cam 218 ending corresponding to the end 18a of cam 18, in the region of one of the magnetic means 215a before theselecting station represented by electromagnetic selector means b.
  • Carrier 207 and its outer annular portion 20741 are connected by a circular shield plate 212 secured by screws 212a to the carrier means, and clamping a set of biasing spring 211 whose curved upper ends engage, respectively, recesses in correlated needle-inlinencing elements 1h.
  • the needle-influencing elements are mounted in axially extending grooves of carrier means 207, 207a for movement in axial direction between a lower inoperative position in which the respective bi-asing spring 211 is tensioned, and the higher operative position in which its horizontal projection 1h engages butt 2g of the correlated cylinder needle 2 from below to shift the same upward to the knit position.
  • the respective biasing spring 211 is tensioned and stores energy which is released when the respective needle-influencing element 1h is moved upward to t'he operative position.
  • Annular members 210 and 210a clamp the lower portions of locking springs 209 to carrier 207 so that locking springs 209 rotate with the needle-inuencing elements 1h in positions registering with the same in radial planes passing through the axis Z.
  • the locking portion 209b In the illustrated position of element 1h, the locking portion 209b is located opposite the edge of element 1h, but in the lower inoperative position of element 1h, locking portion 209b is located opposite recess 201e and can snap into the same to lock the respective correlated element 1h in the inoperative position.
  • cam 218 engages the end portion of a locking spring 209, the same is held in the releasing position shown in FIG. l() and cannot move to a position engaging the correlated element 1h.
  • a gear portion 207i) on carrier 207 meshes with a corresponding gear portion 3b on needle cylinder 3 so that the carrier, the needle-influencing elements 1h, the locking springs 209, and biasing springs 211 rotate in synchronism with the needle cylinder in such a manner that the horizontal projections 1h' and the butts 2g of needles 2 are located in a common plane passing through 10 the axes of the pattern Wheel and of the needle cylinder.
  • the angular spacing between elements 1h is the same as the angular spacing of needles 2 of the needle cylinder so that successive needles and needle-inueucing elements assume the position shown in FIG. 10 for the common axial plane, and the electromagnetic selecting means 215b are located in the same plane.
  • the locking springs 209 ⁇ approaching the selecting station are pressed inwardly by cam 218 so that each locking spring is in the releasing position shown in FIG. l0 and irst slides along the core of the parmanently magnetic means 215a and is held by the same after passing lbeyond the end of the raised cam portion 218, similar as explained with reference to FIG. 6.
  • the turning carrier moves the thus held locking springs 209 onto the electromagnetic selector means 15b which are energized and de-energized in accordance with a predetermined pattern by pattern control means responding to a control tape or card. Assuming that electromagnetic selector means 213b is energized when a locking spring slides thereon in circumferential direction, the locking spring is held in the releasing yposition when the respective needle-influencing element 1h passes through the selecting station.
  • each needleinuencing element While approaching the selecting station, each needleinuencing element, and more particularly a shoulder of a recess therein, is engaged by cam 217 whose downwardly projecting oam portion presses all elements 1h to the lower inoperative position while tensioning therespective biasing springs 211.
  • the shape of cam 217 corresponds to the shape of cam 17 shown in FIG. 7, and cam 217 terminates in the region of the selecting station, but behind electromagnetic selecting means 215b so that selected elements 1h whose locking springs 209 are held by electromagnetic selector means 215b in the releasing position shown in FIG. l0, move rapidly upward to the operative position when released by the free end of cam 217, and during such upward movement, the horizontal projection 1h engaging butt 2g of the correlated needle 2, raises needle 2 to the knit position.
  • electromagnetic selector means 215b is not energized when a non-selected element 1h passes the selecting station, then the corresponding locking means 209 passing from the leading permanent magnet 215:1 onto electromagnetic selector means 21513, is not held by the same and moves dueto its resilient .tension to a locking position in which locking portion 209b projects into the recess 201C of the correlated element 1h and locks the same in the inoperative position while the same is still held in this position by the projecting cam portion of cam 217.
  • element 1h thus locked by the locking spring 209 cannot move upward when passing with the rotating carrier beyond the end of cam 217, but remain locked in the inoperative position while .travelling with the rotating carrier one revolution until again arriving in the region of cam 218 which operates all locking springs 209 to at least temporarily release the corresponding elements 1h.
  • Locking springs 209 of selected elements 2h slide rst along electromagnetic selector means 215b, and then along the permanent magnet 215:1 on the other side of electromagnetic means 215b and corresponding to the permanent magnet 15e in FIG. 6. After a locking spring 209 has been turned by the rotating carrier beyond the second permanent magnet, it is released and moves ydue to its resilient tension toward the corresponding element 1h, ibut since the same is in the higher operative position, looking portion 209b abuts thhe edge of the element in the region below recess 201C.
  • cam 217 moves the respective element 1h back -to the lower inoperative position
  • recess 201C is moved to a position in which locking portion 209b can snap into the same, if locking spring 209 is not held by electromagnetic selector means 215b.
  • the force of the released biasing spring 211 is used for shifting the respective selected element 1h, and for raising the corresponding selected needle 2 to the knit position.
  • a cam corresponding to cam 120 may be provided following the selecting station, and positioned in relation to cam 217 as is cam 120 to cam 122 and 122 in FIG.
  • the energizing and de-energizing of electromagnetic selector means is carried out in all ernbodiments of the invention by program controlled means which sense Jacquard cards or program tapes, preferably film tapes. Due to the high speed of operation, which may lbe 600 impulses and selection per second, electronic control of the electromagnetic selector means is preferred, and, for example, a film tape, driven from the needle cylinder, may have control marks in the form of small transparent rectangles forming a plurality of program tracks respectively sensed by sensing means associated with the several knitting stations and corresponding electromagnetic selector means.
  • the sensing means preferably include an optical sensing system including a source of light projecting a beam toward the respective sensed track, and a photocell producing an impulse when light passes through a transparent mark of the respective program track. Any electric impulse is amplied in a transistor amplier, and supplied to the electromagnetic selector means at the respective knitting and selection station. This arrangement is not an object of the invention, and consequently not illustrated.
  • the needle cylinder rotates about an axis Y--Y
  • the pattern wheel rotates about an axis Z--Z parallel to the axis of the needle cylinder so that the axially moving needleinfluencing elements 1h can directly shift the cylinder needles to the desired knit position.
  • the needleinfluencing elements 1i are not mounted in a pattern wheel, but in an annular carrier which rotates about the axis Y-Y so that the needle-influencing elements 1i can 'be disposed in the same axial grooves as the cylinder needles 2 for directly shifting the same.
  • dial .needles can be shifted in accordance with al predetermined pattern, and such an arrangement is schematically illustrated in FIG. 4.
  • the dial 4 rotates about the axis Y--Y in synchronism with the needle cylinder 3, and has radial grooves in which the dial needles 5 are mounted for radial movement between inner and outer positions.
  • Needle-influencing elements 1K are vmovable in radial grooves of a rotary carrier, and at a selecting station through which every needle-influencing element 1K passes, a selection is made so that the needle-influencing elements 1K of selected dial needles 5 move in radial direction to engage the butt of the respective dial needle 5 and to shift the same outwardly.
  • FIG. 4 schematically illustrates by arrow P the force of the biasing springs described with reference to the other embodiments.
  • At least one pattern wheel is provided with a carrier rotatable about an axis parallel to the axis Y-Y, but the construction of FIG. 5 is used.
  • needle-influencing elements are mounted in radial grooves of a rotary carrier, associated with locking springs, con ⁇ tl'olled by cams, and held by the locking springs in the inoperative inner position unless released under control of electromagnetic selecting means to move in radial direction under the action of the biasing spring thereof.
  • Each selected needle-influencing element moves in radial ydirection in the radial plane of the selecting station, and shifts the corresponding needle 5 outwardly by engaging its butt.
  • a ring-shaped carrier is secured to the dial 4 and rotates about the axis Y-Y in synchronism with the same.
  • a construction corresponding to FIG. 5 is used for moving se-k lected needle-influencing elements in radial direction when passing at a selecting station through a radial plane, so
  • a pattern control arrangement for a knitting machine comprising, in combination, carrier means mounted for rotation; a set of needle-influencing elements supported on said carrier means for rotation therewith past at least one selecting station and for movement thereon between an inoperative position and an operative position adapted to cause displacement of a correlated needle; biasing means for biasing said needle-influencing elements to move toward said operative position; means for moving said needle-influencing elements before said selecting station to said inoperative position; locking means mounted on said carrier means movable between a locking position for locking non-selected needle-influencing elements in said inoperative position, and a releasing position re,
  • control means located at said selecting station for moving said locking means between said releasing and locking positions in accordance with a predetermined program.
  • a pattern control arrangement for a knitting rna- ⁇ chine comprising, in combination, support means; carrier means mounted on said support means for rotation; a set of needle-influencing elements supported on said carrier means for rotation therewith past at least one selecting station and for movement thereon between an inoperative position and an operative position adapted to cause displacement of a correlated needle; biasing means disposed on said carrier means and biasing said needle-inuencing elements to move toward said operative position; means for moving said needle-influencing elements before said selecting station to said inoperative position; a set of locking means mounted on said carrier means in positions registering with said needle-inuencing elements, respectively, each locking means being movable between a locking position for locking the respective needle-influencing element in said inoperative position, and a releasing position releasing the respective needle-influencing element for movement toward said operative position; and control means located at said selecting station for moving said locking means individually between said releasing and locking positions in accordance with a predetermined program.
  • a pattern control arrangement for a knitting machine comprising, in combination, carrier means mounted for rotation; a set of needle-influencing elements supported on said carrier means for rotation therewith past at least one selecting station and for movement thereon between an inoperative position and an operative position adapted to cause displacement of a correlated needle; biasing means for biasing said needle-intluencing elements to move toward said operative position; means for moving said needle-influencing elements before said selecting station to said inoperative position; locking means mounted on said carrier means movable between a locking position for locking non-selected needle-inuencing elements in said inoperative position, and a releasing position releasing selected needle-inuencing elements for movement tov ward said operative position; and control means including electromagnetic selector means located at said selecting station for moving said locking means between said releasing and locking positions, said electromagnetic selector means being adapted to be energized and deenergized in accordance with a predetermined program.
  • a pattern control arrangement for a knitting machine comprising, in combination, support means; carrier means mounted on said support means for rotation; a set of needle-influencing elements supported on said carrier means for rotation therewith past at least one selecting station and for movement thereon between an inoperative position and an operative position adapted to cause displacement of a correlated needle; biasing means disposed on said carrier means and biasing said needle-inuencing elements to move toward said operative position; means for moving said needle-inuencing elements before said selecting station to said inoperative position; a set of locking means mounted on said carrier means in positions registering with said needle-influencing elements, respectively, each locking means being movable between a locking position for locking the respective needleinfluencing element in said inoperative position, and a releasing position releasing the respective needle-iniiuencing element for movement toward said operative position; and control means including electromagnetic selector means located at said selecting station for moving said locking means individually between said releasing and locking positions, said electromagnetic selector means being adapted to be energized and deenergized in accordance with a
  • a pattern control arrangement for a knitting machine comprising, in combination, support means; carrier means mounted on said support means for rotation; a set of needle-influencing elements supported on said carrier means for rotation therewith past at least one selecting station and for movement thereon between an inoperative position and an operative position adapted to cause displacement of a correlated needle; a set of biasing spring means secured to said carrier means in positions registering with said needle-influencing elements and respectively individually biasing said needle-inuencing elements to move toward said operative position; stationary cam means disposed on said support means for moving said needle-induencing elements before-said selecting station to said inoperative position; a set of locking means mounted on said carrier means in positions registering with said needle-influencing elements, respectively, each locking means being movable between a locking position for locking the respective needle-inuencing element in said inoperative position, and a releasing position releasing the respective needle-inuencing element for movement toward said operative position; and control means located at said selecting station for moving said locking means individually between said releasing and locking positions in accord
  • a pattern control arrangement for a knitting machine comprising, in combination, support means; carrier means mounted on said support means for rotation; a set of needle-influencing elements supported on said carrier means for rotation therewith past at least one selecting station and for movement thereon between an inoperative position and an operative position adapted to cause displacement of a correlated needle; biasing means disposed on said carrier means and biasing said needle-influencing elements to move toward said operative position; means for moving said needle-influencing elements before said selecting station to said inoperative position; a set of locking spring means mounted on said carrier means in positions registering with said needle-influencing elements, respectively, each locking ⁇ spring means being movable between a locking position for locking the respective needle-iniiuencing element in said inoperative position, and a releasing position releasing the respective needleinfluencing element for movement toward said operative position, said locking spring means being tensioned in one of said positions thereof and tending to assume the other position; and control means located at said selecting station for moving selected locking spring means individually to said one position so that non-selected locking spring means move
  • a pattern control arrangement for a knitting machine comprising, in combination, support means; carrier means mounted on said support means for rotation; a set of needle-inuencing elements supported on said carrier means for rotation therewith past at least one selecting stationl and for movement thereon between an inoperative position and an operative position adapted to cause displacement .of a correlated needle; biasing means disposed on said carrier means and biasing said needleinuencing elements to move toward said operative position; means for moving said needle-iniiuencing elements before said selecting station to said inoperative position; a set of locking spring means mounted on said carrier means in positions registering with said needle-influencing elements, respectively, each locking spring means being movable between a locking position for locking the respective needle-influencing element in said inoperative position, and a tensioned releasing position releasing the respective needle-influencing element for movement toward said operative position, said locking spring means tending to assume said locking position; and control means located at said selecting station for moving selected locking spring means only to said releasing position so that non-selected locking spring means move
  • a pattern control arrangement for a knitting machine comprising, in combination, support means; carrier means mounted on said support means for rotation; a set of needle-influencing elements supported on said carrier means for rotation therewith past at least one selecting station and for movement thereon between an inoperative position and an operative position adapted to cause displacement of a correlated needle; biasing means disposed on said carrier means and biasing said needle-influencing elements to move toward said operative position; means for moving said needle-influencing elements before said selecting station to said inoperative position; a set of lock- 15 ing spring means mounted on said carrier means in positions registering with said needle-inuencing elements, respectively, each locking spring means being movable between a locking position for locking the respective needle-inuencing element in said inoperative position, and a tensioned releasing position releasing the respective needle-influencing element for movement toward said operative position, said locking spring means tending to assume said locking position; and control means including cam means for moving each locking spring means successively to said releasing position before arriving at said selecting station, and electromagnetic means located at said selecting
  • a pattern control arrangement for a knitting machine comprising, in combination, support means; carrier means mounted on said support means for rotation; a set of needle-influencing elements supported on said carrier means for rotation therewith past at least one selecting station and for movement thereon between an inoperative position and an operative position adapted to cause displacement of a correlated needle; aset of biasing spring means secured to said carrier means in positions registering with said needle-influencing elements and respectively individually biasing said needle-influencing elements to move toward said operative position; stationary ca-m means disposed on said support means for moving said needle-influencing elements before said selecting station to said inoperative position; a set of locking spring means mounted on said carrier means in positions registering with said needle-influencing elements, respectively, each locking spring means being movable between a locking position for locking the respective needle-inuencing element in said inoperative position, and a tensioned releasing position releasing the Irespective needle-influencing element for movement toward said operative position, said locking spring means tending to assume said locking position; and control means including cam means for moving each locking spring
  • a pattern control arrangement for a knitting machine comprising, in combination, support means; carrier means mounted on said support means for rotation; a set of needle-influencing elements supported on said carrier means for rotation therewith past at least one selecting station and for movement thereon between an inoperative position and an operative position adapted to cause displacement of a correlated needle; a set of biasing spring means secured to said carrier means in positions registering with said needle-influencing elements and respectively individually biasing said needle-inuencing elements to move toward said operative position; stationary cam means disposed on said support means for moving said needle-influencing elements before said selecting station to said inoperative position; a set of locking spring means mounted on said carrier means in positions registering with said needle-influencing elements, respectively, each locking spring means being movable between a locking position for locking the respective needle-influencing element in said inoperative position, and a tensioned releasing position releasingthe respective needle-intiuencing element for movement toward said operative position, said locking spring means tending to assume said locking position; and control means including cam means for moving each locking spring
  • a pattern wheel arrangement for a knitting machine having needles comprising, in combination, support means including a fixed member; selector means mounted on said support means and being operable between a selecting condition and an inoperative condition; a carrier mounted on said support means for rotation; a set of needle-influencing elements supported on said carrier for rotation therewith past said selector means, and for movement on said carrier between an inoperative position and an operative position for displac- ⁇ region of said selector means; a set of locking springs mounted on said carrier in positions registering with said elements, respectively, each locking spring having a fixed end portion secured to said carrier end and a locking portion and having a normal locking position for locking the respective element by said locking portion, and a tensioned releasing position releasing the respective element for movement to said operative position; and second cam means secured to said member for moving said locking portions of said locking springs successively to said releasing position before arriving at said selector means during rotation of said carrier, said selector means holding in said selecting condition passing locking springs in said releasing position so as to permit movement of passing
  • a pattern wheel arrangement foria knitting machine having needles rotatable about an axis comprising, in combination, support means including a fixed member and mounted at a knitting station of the machine; electromagnetic selector means mounted on said support means and being operable between an energized selecting condition and a de-ene-rgized inoperative condition; a car-rier mounted on said support means for rotation about an axis extending at an acute angle to said axis; a set of needle-influencing elements supported on said carrier for rotation therewith past said selector means, and for radial movement on said carrier between an inoperative position and an operative position yfor displacing a correlated needle while turning with said carrier; biasing means for biasing said needle-infinencing elements to move to said operative position; first partly circular cam means secured to said member vfor moving said elements to said inoperative position before passing said selector means and shaped to permit movement of said elements to said operative position in the region of said selector means; a set of locking springs mounted on said carrier in positions registering
  • a pattern wheel arrangement for a knitting machine having needles rotatable about an axis comprising, in combination, support means including a iixed plate and mounted at -a knitting station of the machine; electromagnetic selector means mounted on said plate and being operable :between an energized selecting condition and a de-energized inoperative condition; a carrier mounted on said support means for rotation about an axis extending at an acute angle to said axis; a set of needleinuencing elements supported on said carrier for rotation therewith past said selector means, and for radial movement on said carrier between an inoperative position and an operative position for displacing a correlated needle while turning with said carrier, said elements having recesses; a set of biasing spring means for biasing said needle-induencing elements to move to said operative position; first partly circular cam means secured to said plate located in said recesses for moving said elements to said inoperative position before passing said selector means and shaped to permit movement of said elements to said operative position in the region of said selector means
  • a pattern wheel arrangement for a knitting machine having needles rotatable about an axis comprising, in combination, support means including a xed member and mounted at a knitting station of the machine; electromagnetic selector means mounted on said support means and being operable between an energized selecting condition and a fle-energized inoperative condition; a carrier mounted on said support means for rotation about an axis extending parallel to said axis; a set of needle-influencing elements supported on said carrier for rotation therewith past said selector means, and for radial movement on said carrier between an inoperative position and operative position for displacing a correlated needle in axial direction; biasing means for :biasing said needleinuencing elements to move to said operative position; first cam means secured to said member for moving said elements to said inoperative position before passing said selector means and shaped to permit movement of said elements to said operative position in the region of said selector means; a set of locking springs mounted on said carrier in positions registering with said elements, respectively, each locking spring having
  • support means including a cam cylinder; selector means mounted on said cam cylinder at at least one knitting station and being operable between a selecting condition and an inoperative condition; a needle cylinder mounted on said support means for rotation and having axially extending grooves; needles guided in said grooves for axial movement and for rotation with said needle cylinder; a set of needle-influencing elements mounted in said grooves for rotation with said needle cylinder, and for axial movement between an inoperative position and an operative position for shifting the correlated needle in the respective groove; biasing means for biasing said needle-influencing elements to move to said operative position; cam means secured to said cam cylinder for moving said elements to said inoperative position before passing said selector means and shaped to permit movement of said elements to said operative position in the region of said selector means; a set of locking springs mounted on said carrier in positions registering with said elements, respectively, each locking spring having a fixed end portion secured to said carrier end and a locking portion and having a normal locking position for locking the respective
  • support means including a cam cylinder; selector means mounted on said cam cylinder at at least one knitting station and being operable between a selecting condition and an inoperative condition; a needle cylinder mounted on said support means for rotation and having axially extending grooves; needles guided in said grooves for axial movement and for rotation with said needle cylinder; a set of needle-intluencin-g elements mounted in said grooves for rotation with said needle cylinder, and for axial movementbetween an inoperative position and an operative position for shifting the correlated needle in the respective groove; biasing means for biasing said needle-influencing elements to move ⁇ to said operative position; cam means secured to said cam cylinder for moving said elements to said inoperative position before passing said selector means and shaped to permit movement of said elements to an intermediate position in the region of said selector means so that an element in said intermediate position abuts a correlated needle; other cam means secured to said cam cylinder following said region and shaped to move said elements from said intermediate
  • support means including a cam cylinder; electromagnetic means mounted on said cam cylinder at at least one knitting station and being operable between an energized condition and an inoperative condition; a needle cylinder mounted on said support means for rotation and having axially extending grooves; needles guided in -said grooves rfor axial movement and for rotation with said needle cylinder; a set of needle-infinencing elements mounted in said grooves for rotation with said needle cylinder, and f or axial movement between an inoperative position and an operative position for shifting the correlated needle in the respective groove; a set of biasing spring means for biasing said needle-inuencing elements to move to said operative position; cam means secured to said cam cylinder for moving said elements to said inoperative position before passing said selector means and shaped to permit movement of said elements to an intermediate position in correlated needles to a knit position; a set of locking springs mounted on said carrier in positions registering with said elements, respectively, each locking spring having a xed end portion
  • a pattern wheel arrangement for a knitting machine having a dial with dial needles rotatable about an axis comprising, in combination, support means including a fixed member; selector means mounted on said support means and being operable between a selecting condition and an inoperative condition; a carrier mounted on said support means for rotation about an axis extending in the direction of said axis; a set of needle-induencing elements supported on said carrier for rotation therewith past said selector means, and for radial movement on said carrier between an inoperative position and an operative position for displacing a correlated needle; ybiasing means for biasing said needle-infinencing elements to move to said operative position; first cam means secured to said member for moving said elements to said inoperative position before passing said selector means and shaped to permit movement of said elements to said operative position in the region of said selector means; a set of locking springs mounted on said carrier in positions registering with said elements, respectively, each locking spring having a fixed end portion secured to said carrier end and a locking portion

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  • Textile Engineering (AREA)
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US361310A 1963-04-20 1964-04-20 Pattern control arrangement for circular knitting machines Expired - Lifetime US3292393A (en)

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DEM56550A DE1223984B (de) 1963-04-20 1963-04-20 Mustervorrichtung an Rundstrickmaschinen

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3365917A (en) * 1964-03-28 1968-01-30 Morat Gmbh Franz Needle control apparatus
US3422639A (en) * 1965-07-30 1969-01-21 Wildt Mellor Bromley Ltd Patterning systems for circular knitting machines
US3472287A (en) * 1965-10-29 1969-10-14 Morat Franz Control device for textile machines
US3509738A (en) * 1966-11-15 1970-05-05 Karl Flad Knitting machines
US3518845A (en) * 1966-11-14 1970-07-07 Dubied & Cie Sa E Selecting device for individual selection of the knitting tools in very fine gauge knitting machines
DE2010973A1 (de) * 1970-03-09 1972-01-27 H Stoll & Co , 7410 Reutlingen Flachstrickmaschine
US3641789A (en) * 1968-06-06 1972-02-15 Cotton Ltd W Straight bar knitting machines
US3667255A (en) * 1969-12-29 1972-06-06 Bassist Rudolf G Needle selection arrangement for a circular knitting machine
US3710594A (en) * 1969-08-05 1973-01-16 Bonneterie Sa Et Device for the selection of the needles or knitting accessories of circular knitting machines
US3818728A (en) * 1971-11-30 1974-06-25 Erba Maschinenbau Ag Control device for the needles of a knitting machine
US3851500A (en) * 1971-04-19 1974-12-03 Rockwell International Corp Circular knitting machine needle selecting apparatus
US3899899A (en) * 1973-10-09 1975-08-19 Empisal Knitmaster Device for automatic selection of the knitting needles in a hand-operated knitting machine
US3943730A (en) * 1973-04-25 1976-03-16 Universal Maschinenfabrik Control device for knitting machines

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2173488A (en) * 1937-09-11 1939-09-19 Lefier Patent Company Inc Pattern-control mechanism
US3079775A (en) * 1956-07-16 1963-03-05 Franz Morat K G Fa Pattern control arrangement for a circular knitting machine
US3170312A (en) * 1963-01-22 1965-02-23 Morat Gmbh Franz Pattern wheel arrangement

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE24018C (de) * H. TRIEBEL in Lüben Wiesenstriegel
DE24031C (de) * H. KLINGHAMMER in Langensalza Drehbarer Blumentisch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2173488A (en) * 1937-09-11 1939-09-19 Lefier Patent Company Inc Pattern-control mechanism
US3079775A (en) * 1956-07-16 1963-03-05 Franz Morat K G Fa Pattern control arrangement for a circular knitting machine
US3170312A (en) * 1963-01-22 1965-02-23 Morat Gmbh Franz Pattern wheel arrangement

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3365917A (en) * 1964-03-28 1968-01-30 Morat Gmbh Franz Needle control apparatus
US3422639A (en) * 1965-07-30 1969-01-21 Wildt Mellor Bromley Ltd Patterning systems for circular knitting machines
US3472287A (en) * 1965-10-29 1969-10-14 Morat Franz Control device for textile machines
US3518845A (en) * 1966-11-14 1970-07-07 Dubied & Cie Sa E Selecting device for individual selection of the knitting tools in very fine gauge knitting machines
US3509738A (en) * 1966-11-15 1970-05-05 Karl Flad Knitting machines
US3641789A (en) * 1968-06-06 1972-02-15 Cotton Ltd W Straight bar knitting machines
US3710594A (en) * 1969-08-05 1973-01-16 Bonneterie Sa Et Device for the selection of the needles or knitting accessories of circular knitting machines
US3667255A (en) * 1969-12-29 1972-06-06 Bassist Rudolf G Needle selection arrangement for a circular knitting machine
DE2010973A1 (de) * 1970-03-09 1972-01-27 H Stoll & Co , 7410 Reutlingen Flachstrickmaschine
US3851500A (en) * 1971-04-19 1974-12-03 Rockwell International Corp Circular knitting machine needle selecting apparatus
US3818728A (en) * 1971-11-30 1974-06-25 Erba Maschinenbau Ag Control device for the needles of a knitting machine
US3943730A (en) * 1973-04-25 1976-03-16 Universal Maschinenfabrik Control device for knitting machines
US3899899A (en) * 1973-10-09 1975-08-19 Empisal Knitmaster Device for automatic selection of the knitting needles in a hand-operated knitting machine

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NL141253B (nl) 1974-02-15
LU45889A1 (de) 1964-10-16
BE646782A (de)
NL6403624A (de) 1964-10-21
DE1223984B (de) 1966-09-01
SE309646B (de) 1969-03-31
AT275002B (de) 1969-10-10
CH433568A (de) 1967-04-15
GB992564A (en) 1965-05-19

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