US3260073A - Patterning mechanism for jacquard circular knitting machines - Google Patents

Patterning mechanism for jacquard circular knitting machines Download PDF

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Publication number
US3260073A
US3260073A US312518A US31251863A US3260073A US 3260073 A US3260073 A US 3260073A US 312518 A US312518 A US 312518A US 31251863 A US31251863 A US 31251863A US 3260073 A US3260073 A US 3260073A
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Prior art keywords
pattern
groups
tracks
tape
selection
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US312518A
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English (en)
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Seiler Fritz
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Edouard Dubied et Cie SA
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Edouard Dubied et Cie SA
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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 ; Program-control arrangements

Definitions

  • Patterned knitted fabrics can be manufactured on multifeed circular knitting machines using various equipment, such as pattern wheels, pattern drums or endless pattern tapes or films. Such devices are arranged either on each of the knitting systems as partial selection and storing mechanism, or as a sole collective selection apparatus which is common to all knitting systems.
  • Stationary pattern wheels or small drums are preferably arranged on circular knitting machines having rotatable needle cylinders from which they are usually driven by means of a common gear wheel meshing with individual pinions.
  • Such pattern wheels or drums are usually provided for a predetermined invariable pattern and serve first of all for the manufacture of simple displaced or shifted patterns.
  • the possibility of variation of the pattern in such devices is limited, on the one hand by the size of the wheel and consequently by the number of divisions, and on the other hand by the rigidity of the adjusted selection.
  • An electromagnetic selection control of pattern wheels which was proposed recently, has advantageously enlarged the relatively small pattern limits, inherent in these wheels, without however reaching the practically unlimited range of patterns offered by other selection systems.
  • the arrangement of known big pattern drums is particularly suitable for circular knitting machines having stationary needle cylinders and revolving cams.
  • the common stationary drum which rotates step by step forms in this case the central control station from which the selection and transmission elements of the different knitting systems which successively pass this station, receive each its respective selection.
  • Such patterning mechanism enable the production of patterns of considerable size, but they are mechanically quite complicated and accordingly expensive and do not allow a rapid and simple Change of pattern.
  • pattern tapes serving as selection carriers on circular knitting machines having rotatable needle cylinders has also been proposed already.
  • These tapes which are preferably endless, are made of tempered band steel, plastic or paper and the like, of high sensible strength.
  • a separate tape may be provided for each knitting system of the machine, and it is possible to effect the selection in each system by a single, common pattern tape.
  • All these patterning devices of known type tend to realize the greatest possible pattern size with regard to the height and the width of the area, while obtaining the greatest possible production, independently of the gauge of the machine.
  • small drums the limits already mentioned will intervene, while in the case of a big common selection drum the number of holes and of rows of holes arranged one above the other, as well as of the bores on its circumference determine the greatest possible pattern area. Since the dimensions of the drum cannot exceed a certain maximum value for practical reasons, the pattern size is still limited.
  • a single endless pattern tape also cooperating with partial selecting and storing mechanism, as for example described in British Patents Nos. 591,269 and 744,128, also allows almost unlimited area heights, which are practically only limited by the greatest possible tape or film length which in turn depends on the capacity of the tape storing box.
  • the above rule expresses the following: For a given number of knitting systems, for which the maximum will be chosen, taking into account the production of the machine, it is not easily possible to exceed a certain gauge size without creating a conflict between two groups of successive patterns following each other along the same track of the pattern tape. In other words: the length of the tape section between two successive feeding stations, would not allow accommodation of pattern groups of greater extension than those whose end just coincides with the beginning of the next group. If longer pattern groups would be accommodated, there would result a mutual overlapping, which is practically impossible.
  • the successive groups for recording the pattern on the pattern tape which are required for reproducing a complete design, are arranged in overlapping relationship along several tracks on the band.
  • pattern tracks allows at the same time the provision of more divisions in one pattern group than there are selecting members in a partial selection device.
  • the pattern groups may have different lengths, or may be diiferently spaced from each other on the same track.
  • FIGURE 1 is a diagrammatic plan view of a circular knitting machine having a series of partial patterning devices and a common endless pattern tape.
  • FIGURE 2 is a vertical section through one half of a partial pattern device having a selector member and a pattern tape at the place of selection;
  • FIGURE 3 shows three difierently shaped selector mmebers
  • FIGURE 4 represents a fragment of a pattern tape
  • FIGURE 5 is a diagrammatic representation of a length of pattern tape with recorded pattern groups arranged along several tracks, but continuous on the same track.
  • FIGURE 6 also shows diagrammatically a length of pattern tape with recorded pattern groups arranged along several tracks, but discontinuous and subdivided on alternate tracks.
  • Partial patterning devices 1 to 24 are fixed on a table plate 25 and uniformly spaced along the circumference of the circular knitting machine.
  • the common endless pattern tape 26 which passes along all partial patterning devices, is rolled on and off in a tape storage box 27 in known manner.
  • Theuniformly spaced partial patterning devices 1 to 24 are formed as pattern wheels, in known manner, having each the same diameter and containing selectors 28 (FIG. 2) which contact the pattern tape 26 at the place of selection.
  • the pattern tape 26 is provided with apertures 29 punched out in accordance with the design (FIG. 4) and which may be engaged by the projections 30, 31, 32 or 33 of the selectors 28 (FIGS. 2. and 3).
  • a movable driver composed of several parts operates in known manner to lead the selected elements 28 into the appropriate position for actuation of the needles or the jacks of the needle cylinder.
  • the pins 36 in the pattern wheels coacting with the conveyer holes 37 (FIG. 4) in the pattern tape advance the tape in longitudinal direction, opposite to the direction of circular movement of the cylinder.
  • the pattern groups in the tape 26 which belong to each pattern wheel 1 to 24 are also designated with the same numbers 1 to 24 as the Wheels to which they correspond (FIG. 5).
  • the length of one pattern group corresponds generally with the number of selectors in one wheel.
  • the arrangement of the pattern groups is such that at least two successive pattern groups are alternatively displaced in two tracks so that there is no limitation of their length, distance and number.
  • the pattern group 2 (FIG. 5) is displaced with respect to group 1, whereby an overlapping a of apertures is obtained.
  • the pattern group 2, belonging to the pattern wheel 2, thus begins to act before the action of pattern group 1 is finished.
  • the second half of the pattern groups has to be arranged on further tracks of the tape; these groups also may be displaced one with respect to the other, in the same manner as the pattern groups of the first half. In this manner four parallel superposed tracks of pattern are obtained, which, in reality represent two double tracks.
  • the wheels In order that each of the pattern wheels 1 to 24 can correctly cooperate with its corresponding pattern group, the wheels must be equipped with suitably formed selectors, which are provided 'with selector projections arranged on different levels.
  • the pattern wheels 1, 3, 5, 7, 9 and 11 associated with the track I of the tape for example, comprise selectors 28 having a projection 36
  • the wheels 2, 4, 6, 8, 10 and 12 associated with the track II comprise selectors 28' having a projection 31
  • the wheels 13, 15, 17, 19, 21 and 23 associated with the track III comprise selectors 28" having a projection 32
  • the wheels 14, 16, 18, 20, 22 and 24 associated with the track IV comprise selectors 28" having a projection 33.
  • the pattern groups 1 to 24 correspond to the second revolution of the needle cylinder, and the groups 1 to 24 to the last revolution for the execution of a complete Jacquard pattern.
  • the described arrangement of the pattern groups on the common pattern tape also allows the provision of more apertures for a pattern group than there are selectors in the corresponding pattern wheel.
  • n an integer or a fractional number.
  • the limit of enlargement is determined by the meeting of two successive patterns groups on the tape. This possibility is utilized among others when a thread changing device is provided and, for catching the thread at the place of the change, another needle selection shall become elfective than that just corresponding with the respective pattern track. In fact, it may happen that the design to be reproduced does not contain any selected needles (in operation), while for a correct insertion of the thread. at least one of them is necessary. In this case, the first part of such an enlarged pattern group produces the special needle selection with at least one thread-seizing needle, whilst the second part selects the proper Jacquard pattern which then can be locked in the pattern wheel.
  • pattern wheels of different diameters may cooperate with the common pattern tape, which therefore will be provided with pattern groups of different lengths.
  • each pattern group on the pattern tape is continuously disposed on the same track, i.e. on the same level without subdivisions; consequently each one of the totality of pattern wheels distributed all around the machine, contains only one type of selector.
  • each pattern group on pattern tape 26a can be subdivided in four sections 1a, 1b, 1c, id or 2a, 2b, 2c, 2d, and so on, which will be arranged on different tracks in the tape, in zigzag disposition.
  • the sections 1a and 1c of pattern group I are on the track I, the sections 112 and 1d on the track II, the sections 2a and 2c on the track I, and the sections 2b and 2d on the track II, and so on.
  • the pattern wheels 1 to 12 cooperating with the tracks I and II must be equipped with selectors in such manner that in each wheel the first and the third section of its circumference extending angularly each over one quarter of a circle, comprises selectors 28 having projections 30, and the second and fourth sections comprise selectors 28 with projections 31.
  • the wheels 13 and 24 which cooperate with the tracks III and IV are equipped in analogous manner, i.e. the sections one and three have selectors 28" with projections 32, and the sections two and four have selectors 28" with projections 33.
  • each pattern group in four sections is herein described and illustrated by way of example. Other subdivisions, however, are possible, such as 3/3, 5/5 or 6/6, and so on; it is clear that a corresponding subdivision of the pattern wheels has to be provided.
  • the pattern tape has been shown as comprising two double tracks, ie, a total of four parallel superposed recording tracks. It is obvious that the number of double rows may be increased, which obviously requires to correspondingly adapt the number and gradation of the projections of the selectors 28, 28', 28" and 28".
  • a patterning mechanism for Jacquard circular knitting machines comprising a common endless pattern band, selector means including a series of partial selection and storage devices each such device being in the form of a selection wheel, knitting elements which said wheels control, said band having at least four superposed tracks, partial pattern groups on respective tracks, the partial pattern groups of said tracks being disposed in overlapping relationship with the groups of one pair of said tracks controlling odd numbered selector means, and the groups on a second pair of tracks controlling even numbered selector means, and said partial pattern groups providing a complete pattern.
  • any of the pattern groups in the said band may comprise more subdivisions than there are selector means in a partial patterning device.
  • a patterning mechanism for Jacquard circular knitting machines in which a common endless pattern band effects the selection and positioning of selecting members which latter are arranged in a series of partial selection and storing devices which are adapted to act on the needle jacks of the machine, said pattern band comprising successive pattern groups -for recording the pattern thereon which are required for reproducing a complete design, said groups being arranged in overlapping relationship along a plurality of tracks on said band and said selecting members having projections engageable in respective of the pattern groups, with projections of chosen selectors at a level to engage only in pattern groups of a track at one level, projections of other chosen selectors at a level to engage only in pattern groups of a track at yet another level, projections of still other chosen selectors at yet another level to engage only in pattern groups of a track at still a different level and projections of further chosen selectors at a still different level to engage only in pattern groups of a further track at yet another level.
  • a patterning mechanism according to claim 3 wherein any of said pattern groups are arranged in more subdivisions than there are selectors in a partial selection and storing device.
  • a patterning mechanism in which various of said pattern groups have difiering lengths.
  • a patterning device in which the pattern groups on the same track are diflferently spaced from each other.
  • each pattern group is subdivided into sections disposed on alternate tracks in zig-zag manner.
  • a patterning mechanism -for Jacquard circular knitting machines in which a common endless pattern band effects the selection and positioning of selecting members which latter are arranged in a series of partial selection and storing devices which are adapted to act on the needle jacks of the machine, said pattern band comprising successive pattern groups for recording the pattern thereon which are required for reproducing a complete design, said pattern groups being arranged in overlapping relationship along a plurality of tracks at different levels on said band, each of said partial selecting and storing devices including a plurality of selectors and each selector having a projection so disposed as to be engageable in a pattern group of a track at one level only, a selected number of the partial selection and storing devices being adapted to cooperate only with pattern groups in tracks at first and second levels, with projections of chosen of the selectors of said selected number of partial selection and storing devices disposed to engage only in pattern groups in the first of said track levels and with projections of other chosen of the selectors of said selected number of partial selection and storing devices disposed to engage only in pattern

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US312518A 1962-09-28 1963-09-30 Patterning mechanism for jacquard circular knitting machines Expired - Lifetime US3260073A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1146362A CH425065A (de) 1962-09-28 1962-09-28 Mustervorrichtung für Jacquard-Rundstrickmaschinen

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US3260073A true US3260073A (en) 1966-07-12

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US312518A Expired - Lifetime US3260073A (en) 1962-09-28 1963-09-30 Patterning mechanism for jacquard circular knitting machines

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US (1) US3260073A (de)
CH (1) CH425065A (de)
ES (1) ES292258A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416332A (en) * 1965-08-02 1968-12-17 Dubied & Cie Sa E Patterning device for jacquard circular knitting machines
US3452560A (en) * 1966-03-11 1969-07-01 Dubied & Cie Sa E Patterning device for circular knitting machines

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR697886A (fr) * 1929-06-26 1931-01-23 Dispositif d'enroulement pour bande de modèle sans fin, en particulier pour bande de modèle jacquard. dans les machines à tricoter, à tisser, notamment les machines circulaires à tricoter
US2611253A (en) * 1943-02-15 1952-09-23 Edouard Dubied & Compagnie Sa Pattern device for circular knitting machines
US3079775A (en) * 1956-07-16 1963-03-05 Franz Morat K G Fa Pattern control arrangement for a circular knitting machine
US3167937A (en) * 1962-03-30 1965-02-02 William L Carroll Pattern wheel control system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR697886A (fr) * 1929-06-26 1931-01-23 Dispositif d'enroulement pour bande de modèle sans fin, en particulier pour bande de modèle jacquard. dans les machines à tricoter, à tisser, notamment les machines circulaires à tricoter
US2611253A (en) * 1943-02-15 1952-09-23 Edouard Dubied & Compagnie Sa Pattern device for circular knitting machines
US3079775A (en) * 1956-07-16 1963-03-05 Franz Morat K G Fa Pattern control arrangement for a circular knitting machine
US3167937A (en) * 1962-03-30 1965-02-02 William L Carroll Pattern wheel control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416332A (en) * 1965-08-02 1968-12-17 Dubied & Cie Sa E Patterning device for jacquard circular knitting machines
US3452560A (en) * 1966-03-11 1969-07-01 Dubied & Cie Sa E Patterning device for circular knitting machines

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Publication number Publication date
CH425065A (de) 1966-11-30
ES292258A1 (es) 1964-01-16

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