US3344620A - Patterning mechanism for circular kntting machines - Google Patents

Patterning mechanism for circular kntting machines Download PDF

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Publication number
US3344620A
US3344620A US447131A US44713165A US3344620A US 3344620 A US3344620 A US 3344620A US 447131 A US447131 A US 447131A US 44713165 A US44713165 A US 44713165A US 3344620 A US3344620 A US 3344620A
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United States
Prior art keywords
drum
pins
patterning
holes
axis
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Expired - Lifetime
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US447131A
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English (en)
Inventor
Alfred P Saunders
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Wildt Mellor Bromley Ltd
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Wildt Mellor Bromley Ltd
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Publication of US3344620A publication Critical patent/US3344620A/en
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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
    • D04B15/68—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used
    • D04B15/74—Pattern drums
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20636—Detents

Definitions

  • the invention is concerned with patterning mechanism of this class and of the kind including a patterning drum driven about its axis and furnished at pre-arranged locations with pins or the equivalent and arranged to selectively actuate intermediate members which act selectively upon the elements to be controlled.
  • One known form of patterning mechanism comprises a stack of slides or pivoted levers constituting the intermediate members and movable individually towards and away from the elements for selective action thereupon whereby the latter are rendered operative and inoperative; and a rotary patterning drum, as described above, for moving the carriers in a predetermined manner, whereby the corresponding rotary members are brought into and out of action in accordance with patterning requirements.
  • the patterning drum is formed with a regular series of identical radial holes, the pins or the equivalent being inserted into selected ones thereof and projected radially from the drum.
  • the pins or the equivalent are not positively held in the selected holes and the drum is surrounded by a partcylindrical shroud concentrically arranged with respect to the drum. As the drum rotates within the shroud the pins slide along the internal surface of the shroud and are prevented from moving radially out of the drum. The shroud i cut away at one side so that the pins can act upon the intermediate members to be selected thereby.
  • the drum which is usually disposed with its axis vertical, is mounted on a support located upon a base by means of an upstanding spigot entering a recess formed in the underside of the support, the latter being retained in position by a screwthreaded bolt passing therethrough and entering a complementary hole in the spigot-forming portion of the base.
  • the disadvantage of this arrangement is that, in order to remove the patterning drum from its base, for example, to permit the disposition of the pins to be changed, the drum must be moved axially. However, before the patterning drum can be removed from its mounting all of the intermediate members have to be pressed back against the spring action.
  • the aim of the present invention is to provide general improvements in patterning mechanism of the kind concerned.
  • the patterning drum is equipped at predetermined locations with radially extending patterning pins each of which is formed, in the section located within the drum, with a groove or recess and the drum is provided with a plurality of locking members extending in an annular series about the axis of the drum and each extending parallel to the axis of the drum into the groove or recess of an adjacent radial pin in the drum, whereby the said pins are normally held upon the drum, but can be released for removal from the drum as a result, as in one arrangement, of either axial movement of the locking members or, as in another arrangement, of angular movement of the locking members.
  • the drum is mounted "on a support in the form of a coaxial internal core formed at its lower end with a socket and adapted to be secured upon a base by means of a screw-threaded bolt extending coaxially through the core and engaged in a screw-tapped block or nut which is located in a bore formed in the base and has a limited axial movement relatively to the base and the upper portion of which forms a spigot adapted to be received within the socket in the core whereby when the drum is to be detached, by unscrewing the screw-threaded bolt the nut can be withdrawn downwardly to bring the upper spigot-forming portion thereof below the level of the upper face of the base, and the drum and the core can be withdrawn laterally from the base.
  • the drum does not have tobe moved vertically, i.e. axially, during detachment from the base and can be moved laterally in a direction away from the intermediate members without interfering with the latter.
  • FIGURE 1 is a vertical sectional view of part of a circular knitting machine at a patterning element selecting station and of one form of patterning mechanism located at said station.
  • FIGURE 2 is a plan view of the mechanism shown in FIGURE 1.
  • FIGURE 3 is a part sectional detail plan view corresponding to FIGURE 2, but on a larger scale, showing the manner in which the locking members retain the pins within the patterning drum.
  • FIGURE 4 is a vertical sectional view, corresponding to FIGURE 1, showing an alternative form of patterning mechanism having different locking members, and,
  • FIGURE is a part sectional detail plan view, corresponding to FIGURE 3, of the patterning mechanism shown in FIGURE 4, but on a larger scale than the latter.
  • a portion of the needle cylinder of the machine is indicated at 1 (FIGURE 1), and one of a series of needleactuating jacks beneath the needles (not shown) in the grooves 2 of this cylinder is indicated at 3.
  • Each jack 3 is provided with an extension 3a which, when permitted, moves outwardly under the influence of a cam (not shown) whereby the jack and the corresponding needle are raised, in a known manner to be described.
  • a jack presser 6 is mounted in front of, and in the same groove as, each jack 3 for operating the latter.
  • each jack presser 6 Whenever jacks 3 are to remain down and not raise corresponding needles, the relevant jack pressers are moved out of the grooves 2.
  • the lower end of each jack presser engages a jack raising cam 7.
  • the inner edge of each jack presser 6 has an upper shoulder 6a and a lower shoulder 6b against one or the other of which the lower end of the extension 311 of a jack abuts, depending upon the selection of the jack by cam means (not shown).
  • the outer edge of each jack presser is furnished with patterning butts 6c disposed at different heights.
  • the patterning mechanism comprises a vertically disposed rotary patterning drum 8 furnished with a plurality of radially extending pins, indicated generally at 9, a stack of superimposed slides 10, interposed between the drum 8 and the needle cylinder 1 and slidable individually upon supports (not shown) under the control of the patterning drum 8, towards and away from the jack pressers 6 whereby the latter are selectively rendered operative and inoperative.
  • the topmost and bottommost slides are forwardly disposed and intermediate slides are in their rear, inoperative positions.
  • the cam 7 operates on the jack pressers, and hence upon the jacks, at the position in the cam system prior to reselection.
  • the patterning drum 8 is formed with regularly arranged identical circular radially-extending holes 811, i.e. rows, extending parallel to the axis of the patterning drum, of regularly spaced holes 8a, the rows being regularly spaced angularly about the axis of the drum.
  • the drum has its upper and lower ends internal annular flanges 8b and 8c and is mounted, and secured by screws 17, upon a cylindrical sleeve 16 of an external diameter conforming to the internal diameter of the flanges 8b, 8c, and mounted for rotation upon a core 18 which is of reduced diameter at 18a intermediate its upper and lower ends.
  • the core, the sleeve and the drum rest upon the upper face of the base 13.
  • the core is rigidly but detachably secured to the base by means of a central screw-threaded bolt 19 extending through the core.
  • the head of the bolt 19 retains upon the upper end of the sleeve 16 a coaxial disc 20, a clearance being provided between the core and the disc to allow the drum 8 and the sleeve 16 to rotate relatively thereto.
  • the peripheral portion of the upper face of the disc is rebated and is formed with a concentric groove 20a.
  • To the lower end of the drum is secured a ring 21 formed with ratchet teeth 21a (FIGURES 1 and 2) whereby the drum and the sleeve are racked round in timed relation with the operation of the machine by mechanism including a pawl 22 (FIGURE 2).
  • Identical pins 9 are mounted in selected ones of the radial holes 8a in the drum 8 in dispositions determined by patterning requirements, the pins being of a diameter which is a sliding fit within the holes and of such length that, when in its fully inserted position with its inner end abutting the sleeve 16 and outer end section of the pin extends from the periphery of the drum for actuating relevant ones of the discs 10.
  • Each pin 9 is formed adjacent its inner end with an annular relatively wide shallow groove 9a of part-circular cross section, so located that, when the pin is in its fully inserted position, the groove is located intermediate the exterior surface of the sleeve 16 and the internal surface of the drum 8.
  • Each of the upper and lower flanges 8b, 8c of the drum is formed with a concentric annular series of holes, aligned with one another and the common axis of each pair of aligned holes extending parallel to the axis of the drum and disposed intermediate adjacent pairs of axially extending rows of the holes in the drum intermediate the external surface of the sleeve and the internal surface of the drum.
  • a rod 24 of initially circular section formed at diametrally opposite locations with parallel flats 24a extending along the length of the rod in planes parallel to the axis so that the rod is of constant section.
  • the diameter i.e. the maximum cross-section of each rod is such that in its locking position (as shown in FIGURE 3), the curved portions of the section fit into the grooves in pins disposed in holes in the two adjacent rows of holes straddling the rod 24 whereby the pins are prevented from moving radially out of the drum.
  • each rod protrudes upwardly above the drum and is curved over to provide a depending portion 25 extending into the groove 20a in the disc 20.
  • the groove is of such width that each rod 24 can be turned, with the portion 25 therein through an angular distance sufficient to take the curved portions of the section of the rod 24 into and out of alignment with the grooves 9a in the pins 9 in the adjacent rows of holes 8a.
  • the planes containing the flats 24a are disposed at opposite sides of the central plane containing the portion 25.
  • the unlocking position of the rod 24 is the one in which the said central plane is disposed substantially radially of the drum.
  • the rods 24 are retained in the locking position by a coaxial ring 26 applied to the disc 20 and partially covering the ggoove 20a and detachably retained by a thumb screw 2
  • a coaxial ring 26 applied to the disc 20 and partially covering the ggoove 20a and detachably retained by a thumb screw 2
  • the existing pins 9 are released and insertion of pins is permitted by unscrewing the thumb screw 27, removing the ring 26 and, with the finger, flicking the portions 25 of the rods 24 into their radial unlocking positions.
  • the width of the groove is such that the rods cannot be turned completely into or beyond the radial position and are located by abutment with the inner wall defining the groove 20a.
  • FIGURES 4 and 5 The alternative example of patterning mechanism depicted in FIGURES 4 and 5 is identical to that described with reference to FIGURES 1 to 3 but difi'ers in the form of the locking means.
  • the disc 20 corresponding to the disc 20 in FIGURES 1 to 3 is of constant thickness and is not formed with a groove, and no locking ring, corresponding to 26, is provided.
  • Each of the locking members 24 corresponding to the locking members 24, is of constant circular cross section with no plates and fits into the grooves 9a of the pins 9 like the curved portions of the section of the rod 24 to lock the pins upon the drum 8. No curved portions corresponding to the portions 25 are provided.
  • the core 18 is counterbored at its lower end to provide a cylindrical socket 18b.
  • the base 13 is formed with a central vertical bore, the upper portion 13a of which is of a diameter less than the core and the lower end portion 13b of which is counterbored.
  • Mounted within this bore is a complementary block 28 comprising a narrow portion 28a slidable within, and of greater axial length than, the upper portion of the bore and a Wide portion 28b slidable within the enlarged portion of the bore and of shorter length than the counterbore 13b.
  • the block 28 has a central screw-tapped bore 28c and constitutes a nut for engagement with the bolt 19.
  • sleeve 16 is tightened, raising the nut 28 so that the narrow upper portion thereof extends up through the bore and constitutes a spigot entering the socket 18b in the core, the bolt 19 being tightened until the wide portion 28b of the nut abuts against the shoulder formed at the junction of the bore and the counterbore inthe base.
  • a patterning mechanism comprising a bank of individually movable selector members selectively operable for the purpose of influencing selection of said patterning elements, a rotary patterning drum formed with rows, extending parallel to the axis of the drum, of regularly spaced radial holes regularly spaced angularly about the axis of the drum, pins located in selected ones of said holes in said drum and projecting radially therefrom for selectively rendering operative said selector members, the portion of each of said pins within the drum being formed with a groove, and a plurality of identical locking members each of non-circular cross section extending in an annular series about and parallel to the axis of the drum, the locking members extending intermediate and for the full length of adjacent pairs of rows of holes, each locking member normally extending intothe grooves in, and retaining, pins in any of said holes in said adjacent rows of holes, and each of the locking members being turnable about its axis
  • each of the pins is formed, in said portion, with an annular groove of shallow part-circular cross section and each of the locking members is of initially circular cross section of a diameter to be partially received within the said grooves but is formed with at least one flat extending along the length of the locking member in a plane parallel to its axis.
  • a patterning mechanism comprising a bank of individually movable selector members selectively operable for the purpose of influencing selection of said patterning elements, a rotary patterning drum formed with rows, extending parallel to the axis of the drum, of regularly spaced radial holes regularly spaced angularly about the axis of the drum, the drum also being provided with two internal annular flanges located adjacent its upper and lower ends, which are formed with appropriate annular series of holes extending parallel to the axis of the drum, the holes in the two flanges being aligned with one another, and their common axis extending intermediate adjacent pairs of rows of said radial holes, pins located in selected ones of said radial holes in said drum and projecting radially therefrom for selectively rendering operative said discs, the portion of each of said pins within the drum being formed with an annular groove of shallow part-circular cross section, and a plurality of locking
  • a patterning mechanism comprising a bank of individually movable selector members selectively operable for the purpose of influencing selection of said patterning elements, a rotary patterning drum formed with rows, extending parallel to the axis of the drum, of regularly spaced radial holes regularly spaced angularly about the axis of the drum, the drum also being provided with two internal annular flanges located adjacent its upper and lower ends, which are formed with appropriate annular series of holes extending parallel to the axis of the drum, the holes in the two flanges being aligned with one another, and their common axis extending intermediate adjacent pairs of rows of said radial holes, the drum also being formed in one end with a concentric groove, pins located in selected ones of said radial holes in said drum and projecting radially therefrom for selectively rendering operative said selector members, the portion of each of said pins Within the drum being formed with an annular groove

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Treatment Of Fiber Materials (AREA)
US447131A 1964-04-15 1965-04-12 Patterning mechanism for circular kntting machines Expired - Lifetime US3344620A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB15568/64A GB1040504A (en) 1964-04-15 1964-04-15 Improvements in patterning mechanism for circular knitting machines

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US3344620A true US3344620A (en) 1967-10-03

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DE (1) DE1585507A1 (de)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911697A (en) * 1973-03-26 1975-10-14 Wirkmaschinenbau Karl Marx Veb Pattern device for circular knitting machines
US3991591A (en) * 1973-03-26 1976-11-16 Veb Wirkmaschinenbau Karl-Marx-Stadt Pattern drum for circular knitting machines

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US891216A (en) * 1906-06-29 1908-06-16 Edgar H Heath Pattern device for warp-knitting machines.
US1940598A (en) * 1932-05-28 1933-12-19 Fidelity Machine Co Trick wheel for knitting machines
US2019396A (en) * 1933-09-15 1935-10-29 Bentley Eng Co Ltd Circular knitting machine
US2124303A (en) * 1936-01-30 1938-07-19 Lombardi Knitting Machine Co I Knitting machine
US2536133A (en) * 1948-06-14 1951-01-02 Automatic Electric Mfg Company Timing mechanism
US3006174A (en) * 1957-01-07 1961-10-31 Southern Mill Equipment Corp Pattern device with movable butts

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US891216A (en) * 1906-06-29 1908-06-16 Edgar H Heath Pattern device for warp-knitting machines.
US1940598A (en) * 1932-05-28 1933-12-19 Fidelity Machine Co Trick wheel for knitting machines
US2019396A (en) * 1933-09-15 1935-10-29 Bentley Eng Co Ltd Circular knitting machine
US2124303A (en) * 1936-01-30 1938-07-19 Lombardi Knitting Machine Co I Knitting machine
US2536133A (en) * 1948-06-14 1951-01-02 Automatic Electric Mfg Company Timing mechanism
US3006174A (en) * 1957-01-07 1961-10-31 Southern Mill Equipment Corp Pattern device with movable butts

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911697A (en) * 1973-03-26 1975-10-14 Wirkmaschinenbau Karl Marx Veb Pattern device for circular knitting machines
US3991591A (en) * 1973-03-26 1976-11-16 Veb Wirkmaschinenbau Karl-Marx-Stadt Pattern drum for circular knitting machines

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Publication number Publication date
GB1040504A (en) 1966-08-24
DE1585507A1 (de) 1970-10-15

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