US3461690A - Pattern device for circular knitting machines - Google Patents

Pattern device for circular knitting machines Download PDF

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Publication number
US3461690A
US3461690A US617577A US3461690DA US3461690A US 3461690 A US3461690 A US 3461690A US 617577 A US617577 A US 617577A US 3461690D A US3461690D A US 3461690DA US 3461690 A US3461690 A US 3461690A
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United States
Prior art keywords
pattern
control
plates
needle
feet
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Expired - Lifetime
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US617577A
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English (en)
Inventor
Johann Martinetz
Horst Paepke
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Mayer and Cie GmbH and Co
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Mayer and Cie GmbH and Co
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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
    • D04B15/78—Electrical devices

Definitions

  • a pattern device for a circular knitting machine wherein needle-controlling plates, which have pattern feet, are directly controlled, in order to make a predetermined pattern selection, by armatures of electromagnets.
  • the needle-controlling plates are supported for longitudinal shifting movement by a rotary needle-carrier means which is formed with longitudinal grooves in which the controlling plates are situated, and the pattern feet of the plates are respectively moved by the rotary needle bed along predetermined paths.
  • the armatures of the several electromagnets terminate in free ends which are inclined and situated in the paths of movement of the pattern feet to engage the latter for shifting the control plates with respect to the bed to locations where these pattern plates will not participate in the knitting operations.
  • the present invention relates to circular knitting machines.
  • the present invention relates to pattern devices of circular knitting machines.
  • the present invention relates especially to that type of pattern device which is adaptedv to coact with a rotary needle carrier of a circular knitting machine whereselection of needles is carried out by electromagnetically actuated adjusting elements which coact with control plates supported by the needle bed for shifting movement.
  • the armature of. an electromagnetic means directly acts as an adjusting element and is provided with an inclined surface situated in the path of movement of a pattern foot of a needle controlling plate so that when the latter pattern foot is engaged by the inclined end of the armature, a control foot of the plate is displaced to a location where it will not engage the knitting-controlling cams or the like and thus will not participate in the knitting operations.
  • This pattern device of the invention has the advantage of not requiring any changes to be made in the control cams or in the needle-carrying structure which may be made precisely the same as already known in Jacquard pattern devices with pin rollers.
  • the objects of the present invention also include the provision of an adjusting element which will not act as a hammer which must be actuated in precise synchronism with the movement of the plate which is to be adjusted and which must have impact contact with this plate.
  • the adjusting element of the invention has an inclined surface along which a pattern foot of a control plate rides.
  • the adjusting device of the invention forms in itself a control cam for the plate.
  • the adjusting elements are in the form of double-armed swing levers with the two arms of each lever being at least approximately of the same mass so that each swing lever is supported for turning movement at its center of gravity.
  • One of the arms of each swing lever terminates in the inclined camming end which coacts with a pattern foot of a needle-controlling plate, while the other arm is an armature which coacts with a pair of electromagnets respectively situated at opposite sides of this other arm, one of these electromagnets acting as an advancing magnet to advance the inclined end of the lever to a position where it will engage the pattern foot of a plate which is to be actuated by the lever, while the other of the electromagnets acts as a retracting magnet to displace the swing lever to a position where its inclined end will not engage the pattern foot.
  • the adjusting levers are supported in such a way that their inclined ends are swingable in the same general direction as the direction of longitudinal shifting movement of the needles and control plates. In the event that a control plate is not to be turned, then the adjusting element is turned through a small adjusting angle beyond the path of movement of the pattern foot of the control plate into a free region between the paths of the pattern feet, so that these pattern feet remain uninfluenced and move past the camming surfaces of the swing levers.
  • each adjusting element is, in an advantageous manner, swung into the path of movement of the pattern foot, of the plate which is to be actuated, before it engages this plate.
  • this construction requires for each of the different pattern foot positions a special electromagnetic control element.
  • the adjusting elements can be set to predetermined positions in the time period between the movement of a pair of pattern feet of plates which are to be controlled by a given adjusting element, so that in accordance with the magnitude of this time period, relatively large control tolerances in the actuating elements can be provided, so as to provide also a relatively great tolerance and a simple construction for the programming controls.
  • the programming device with which the excitation of the electromagnets for the individual control elements is controlled does not form part of the present invention.
  • the switching program which will provide the desired pattern can be arranged on different types of program carriers, such as punched tapes, film strips, magnetic tapes, and the like.
  • the number of adjusting elements for a given knitting system need not in any case correspond to the number of needles required for a repeating pattern of a given width. It is instead possible to arrange the pattern plates for the needles of a given width of repeating .patterns in several groups of stacks which follow upon one another and which are preferably identical, so that, for example, where a repeating pattern has a width requiring 36 needles for the knitting system, groups of six pattern foot positions following one after the other can be provided. Thus, there is required for each knitting system only six individual adjusting elements and each adjusting element must at a miximum control only every sixth needle of the needles which are sequentially moved past the control elements.
  • a pattern device constructed according to the present invention, it is possible to control, according to a predetermined pattern, needles of a cylinder or needles of a dial.
  • the swing levers which act as the adjusting elements can be arranged one above the other while with a knitting system having a dial for the needles, the swing levers of the invention can be arranged one behind the other, so that the camming or control surface of each adjusting element is positioned for proper coaction with a control plate which has a predetermined position for its pattern foot in the needle bed.
  • the camming surfaces for the pattern feet of the individual control elements are arranged in a line parallel to the needle bed in the region of the control station.
  • the present invention relates to a pattern device which in its reliability of operation is far superior to all previously known electromagnetically actuated pattern devices.
  • the structure of the invention is relatively inexpensive. Above all, simply constructed adjusting elements can be used, and the device is capable of being mounted on existing machines without any difliculty, these machines having been initially designed for mechanically actuated pattern devices. The likelihood of faulty operation of the pattern device of the invention is extremely small. All of the elements can be constructed to operate with practically no maintenance and without the presence of any attendants, and the device can be encapsulated in a dust-tight manner at the small-linearly-shaped control station.
  • FIG. 1 is a schematic, side view of a pattern device of the invention shown together with a fragmentarily illustrated needle cylinder, which is shown partly in section;
  • FIG. 2 shows the device of FIG. 1, as seen in the direction of the arrow II of FIG. 1, with the needle cylinder partially developed;
  • FIG. 3 is a top plan view of the pattern device of the invention, as seen in the direction of the arrow III of FIG. 1.
  • the drawings show the pattern device of the invention in a highly schematic manner.
  • This pattern device of the invention brings about the pattern selection of the cylinder needles of a knitting system of a circular knitting machine.
  • the device has six swing levers 1-6, which form the adjusting elements of the device, and which are respectively supported for turning movement by hearing pins 7 in a housing 8 made up of a plurality of individual plates.
  • Each of the swing levers 1-6 has an adjusting arm lat-6a, which, as may be seen from FIG. 3, terminates at its free front end in an inclined camming surface, the inclined end 111 of the lever 1 being shown in FIG. 3.
  • These inclined ends of the swing levers coact with pattern feet 9 of the needle controlling plates 12 which are supported for movement in the guiding grooves of the needle cylinder 11.
  • the pattern feet 9 of the successive control plates 12 are situated at different elevations. In all, there are six different pattern feet positions, and the pattern feet 9 of the successive control plates 12 form, as is apparent from FIG. 2, successive parallel inclined lines each of which includes six of the pattern feet 9 and extends along part of a helix which surrounds the axis of the rotary needle cylinder, this needle cylinder thus forming a needle-carrier means for supporting the control plates 12 for movement. All of the pattern feet have the same width x, and between the pattern feet of a pair of successive control plates there is a predetermined elevational distance y.
  • the control plates 12 can be turned in a known way at the pattern position into the slots 10 at the lower regions of the plates 12 where they are provided with the control feet 13.
  • control feet 13 are guided by way of the cam 14 to the position 13', shown in dotted lines in FIG. 1, so that in this way the control plates 12 are maintained in their normal position in which the control feet 13 will be engaged by the next-following control cam to be guided along an operating cam path so that the needle connected to the thus-controlled control plate will reach its operating position.
  • the adjustment of the control plates 12 and thus of their control feet 13 is determined by the swing levers 1-6 of the invention.
  • the swing levers 1-3, 5 and 6 are in their operating position where their adjusting arms lat-3a, 5a and 6a are at locations where the corresponding pattern feet 9 of the control plates 12 engage the camming ends of these swing levers so that these control plates 12 are pressed at their control feet 13 into the guide slots 10 of the needle cylinder 11.
  • these control plates 12 will not be engaged by the next-following operating cams, and the needles which are controlled by these control plates will remain in their rest positions and will not participate in the knitting operations.
  • the swing lever 4 of FIG. 1 is shown in its rest position.
  • the adjusting arm 4a with its inclined camming end is situated beneath the elevation of the corresponding pattern foot 9 of the control plate 12 which is to be adjusted by the lever 4, and instead the arm 4a of the lever 4 will be situated at its free inclined end in the intermediate space y between a pair of pattern feet which are respectively situated at diiferent elevations.
  • the control plate 12 which has the pattern foot 9 remains, therefore, in its outwardly swung position so that its projecting control foot 13' will be engaged by the next-following knitting cams, and thus this control plate will shift the needle with which it coacts to the operating position.
  • FIG. 3 which shows the swing lever 1 in a top plan view
  • the adjusting arm 1a which is in its operating position will influence at its camming end 1b only every sixth control plate 12, since it is only every sixth control plate which has a pattern foot 9 which moves along a pathin which the camming end 1b of the swing lever 1 is situated.
  • the control plates between those which are controlled by the lever 1 are not illustrated in FIG. 3.
  • the advancing electromagnets 15 are respectively situated beneath the armatures 1c-6c with which they respectively coact, while the retracting electromagnets 16 are arranged above the latter armatures, respectively.
  • FIG. 3 clearly illustrates the electromagnet 15/1 situated beneath and 1ongitudinally displaced along the armature 10 with respect to the electromagnet 16/1 which is situated over the arm 1c at a greater distance from the pivot 7 than the electromagnet 15/ 1.
  • the electromagnets which are situated in the housing 8 are stacked in three rows, and the armature arms 1c-6c of the successive swing levers are also offset with respect to each other, as is apparent from FIG. 3.
  • all of the electromagnets can be situated in a small space, although their height is greater than the mutual distance between a pair of adjoining swing levers, this latter distance corresponding approximately to the sum of the distances at and y which are respectively equal to the width of a pattern foot and the elevational width of the space between a pair of pattern feet of adjoining control plates 12.
  • the advancing magnets 15 are designed so as to be somewhat stronger than the retracting electromagnets 16 which act on longer lever arms so that they need not have the strength of the electromagnets 15.
  • the housing 8 can be made partly of metal and partly of plastic and can to a very large extent be sealed in a dust-tight manner.
  • the individual magnets are screwed onto metal brackets 17, one of which is shown in FIG. 1. y
  • the several swing levers are arranged directly above one another along a line parallel to the axis of the needle cylinder. In a corresponding manner it is possible to arrange swing levers with vertical turning axes where the needles and control plates are carried and guided by a dial.
  • the pattern device of the invention is constructed in such a way that a change of the camming or control system and of the arrangement of the control plates of known mechanical Jacquard pattern devices with pin rollers is not required.
  • the electromagnetic pattern device thus can be mounted on already existing circular knitting machines which were initially provided with mechanical pattern devices.
  • the pattern device of the invention can be changed in a number of different ways. For example, it is possible to provide adjusting elements having inclined front camming ends which are supported for swinging movement in a direction perpendicular to the direction of movement of the control plates. Also, the arms of the swing levers 1-6 can be stepped or angled in such a way that the electromagnets can be arranged at different locations for example one behind the other in a radial direction rather in the circumferential arrangement shown in the drawings.
  • each one of said plurality of electromagnetic selecting means respectively including a pivotally mounted movable swing lever having an inclined end and an advancing electromagnet for advancing the swing lever of each electromagnetic selecting means to a position where its inclined end will engage a pattern foot of a plate and a retracting electromagnet acting on said swing lever for retracting the latter to a position where its inclined end will not engage a pattern foot
  • each one of said swing levers has a pair of arms of approximately the same mass, one of said arms terminating in said inclined end of said swing lever while the other of said arms is magnetically operated, said advancing electromagnets being situated on one side of said other arm for advancing the swing lever to a position where its inclined
  • said needlecarrier means supports said control plates for longitudinal shifting movement, and the pattern feet of successive control plates being offset with respect to each other in the direction of longitudinal shifting movement of said control plates, and said swing levers of said plurality of electromagnetic means respectively being distributed with respect to each other in said direction of longitudinal shifting movement of said plates with said inclined ends thereof respectively situated in the regions of the paths of movement of said pattern feet so that a given swing lever will coact only with a given pattern foot.
  • a rotary needle bed formed with axially extending grooves, a plurality of needle-controlling plates longitudinally .shiftable in said grooves, respectively, and circumferentially distributed about said bed, said plates respectively having pattern feet with a given group of successive plates having their pattern feet axially offset with respect to each other so as to extend along a partial helix which partially extends around the axis of said needle bed, a plurality of swing levers pivotally mounted in a support member and respectively having between their ends turning axes which are parallel to each other and perpendicular to a plane in which lies the longitudinal axis of said circular knitting machine, said swing levers respectively having first control arms extending from their axes toward said needle bed and terminating in inclined ends situated in the path of movement of said pattern feet of each group of plates, respectively, for engaging and camming said pattern feet to shift said plates with respect to said bed to positions where said plates will not participate in the knitting operations, said swing levers respectively having second armature arms

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  • Textile Engineering (AREA)
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US617577A 1966-02-28 1967-02-21 Pattern device for circular knitting machines Expired - Lifetime US3461690A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3530686A (en) * 1967-03-06 1970-09-29 Mayer & Cie Maschinenfabrik Pattern device for circular knitting machines having rotary needle carriers
US3653229A (en) * 1968-09-07 1972-04-04 Mayer & Cie Maschinenfabrik Pattern installation for circular knitting machines
US3659436A (en) * 1968-12-04 1972-05-02 Mayer & Cie Maschinenfabrik Pattern attachment for circular knitting machines
US3695060A (en) * 1968-06-29 1972-10-03 Karl Flad Apparatus for controlling the jacks of knitting machines
US3928988A (en) * 1972-08-12 1975-12-30 Luth Claus Peter Magnetic control device for yarn guides
DE2537118A1 (de) * 1974-08-20 1976-03-11 Matec Spa Radial wirkende nadelwaehlvorrichtung an einer rundstrickmaschine mit radial schwingenden nadelstoessern
US3990270A (en) * 1972-11-03 1976-11-09 Hayes-Albion Corporation Knitting machine
US4004439A (en) * 1968-04-05 1977-01-25 Wildt Mellor Bromley Limited Of Adelaide Works Pattern mechanism
US4838049A (en) * 1985-10-14 1989-06-13 Lonati S.P.A. Device for selecting the needles in a knitting machine, particularly for stockings
US4972686A (en) * 1987-10-07 1990-11-27 Nagata Seiki Kabushiki Kaisha Electromagnetic needle selector for circular knitting machines
US20110113831A1 (en) * 2007-08-28 2011-05-19 Wolfgang Bauer Method and knitting machine for producing a knitted product from substantially untwisted fibre material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT213563Z2 (it) * 1988-01-11 1990-01-22 Santoni & C Spa Dispositivo attuatore elettromagnetico in particolare per la selezione degli aghi in unamacchina per maglieria.

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2067877A (en) * 1934-01-10 1937-01-12 Hemphill Co Knitting machine
US2269398A (en) * 1938-10-14 1942-01-06 Jacquard Knitting Machine Co Inc Circular knitting machine
US2348932A (en) * 1943-03-17 1944-05-16 Western Electric Co Knitting machine
US3079775A (en) * 1956-07-16 1963-03-05 Franz Morat K G Fa Pattern control arrangement for a circular knitting machine
US3229482A (en) * 1963-04-10 1966-01-18 Wildt Mellor Bromley Ltd Patterning mechanism for knitting machines
FR1449339A (fr) * 1965-10-06 1966-03-18 Dubied & Cie Sa E Dispositif de sélection électromécanique des aiguilles d'une machine à tricoter
FR1432787A (fr) * 1965-02-12 1966-03-25 Perfectionnements à la commande de métiers à tricoter circulaires pour l'exécution de dessins
US3262285A (en) * 1962-07-11 1966-07-26 Beguin Rene Electromagnetic needle selection mechanism
US3263453A (en) * 1962-12-06 1966-08-02 Kirkland & Company Ltd A Circular knitting machines
US3283541A (en) * 1963-02-14 1966-11-08 Dubied & Cie Sa E Method and device for the individual control of selecting members
US3290898A (en) * 1964-01-13 1966-12-13 Morat Gmbh Franz Pattern control arrangement for circular knitting machine

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2067877A (en) * 1934-01-10 1937-01-12 Hemphill Co Knitting machine
US2269398A (en) * 1938-10-14 1942-01-06 Jacquard Knitting Machine Co Inc Circular knitting machine
US2348932A (en) * 1943-03-17 1944-05-16 Western Electric Co Knitting machine
US3079775A (en) * 1956-07-16 1963-03-05 Franz Morat K G Fa Pattern control arrangement for a circular knitting machine
US3262285A (en) * 1962-07-11 1966-07-26 Beguin Rene Electromagnetic needle selection mechanism
US3263453A (en) * 1962-12-06 1966-08-02 Kirkland & Company Ltd A Circular knitting machines
US3283541A (en) * 1963-02-14 1966-11-08 Dubied & Cie Sa E Method and device for the individual control of selecting members
US3229482A (en) * 1963-04-10 1966-01-18 Wildt Mellor Bromley Ltd Patterning mechanism for knitting machines
US3290898A (en) * 1964-01-13 1966-12-13 Morat Gmbh Franz Pattern control arrangement for circular knitting machine
FR1432787A (fr) * 1965-02-12 1966-03-25 Perfectionnements à la commande de métiers à tricoter circulaires pour l'exécution de dessins
FR1449339A (fr) * 1965-10-06 1966-03-18 Dubied & Cie Sa E Dispositif de sélection électromécanique des aiguilles d'une machine à tricoter

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3530686A (en) * 1967-03-06 1970-09-29 Mayer & Cie Maschinenfabrik Pattern device for circular knitting machines having rotary needle carriers
US4004439A (en) * 1968-04-05 1977-01-25 Wildt Mellor Bromley Limited Of Adelaide Works Pattern mechanism
US3695060A (en) * 1968-06-29 1972-10-03 Karl Flad Apparatus for controlling the jacks of knitting machines
US3653229A (en) * 1968-09-07 1972-04-04 Mayer & Cie Maschinenfabrik Pattern installation for circular knitting machines
US3659436A (en) * 1968-12-04 1972-05-02 Mayer & Cie Maschinenfabrik Pattern attachment for circular knitting machines
US3928988A (en) * 1972-08-12 1975-12-30 Luth Claus Peter Magnetic control device for yarn guides
US3990270A (en) * 1972-11-03 1976-11-09 Hayes-Albion Corporation Knitting machine
DE2537118A1 (de) * 1974-08-20 1976-03-11 Matec Spa Radial wirkende nadelwaehlvorrichtung an einer rundstrickmaschine mit radial schwingenden nadelstoessern
US4838049A (en) * 1985-10-14 1989-06-13 Lonati S.P.A. Device for selecting the needles in a knitting machine, particularly for stockings
US4972686A (en) * 1987-10-07 1990-11-27 Nagata Seiki Kabushiki Kaisha Electromagnetic needle selector for circular knitting machines
US20110113831A1 (en) * 2007-08-28 2011-05-19 Wolfgang Bauer Method and knitting machine for producing a knitted product from substantially untwisted fibre material
US8117871B2 (en) * 2007-08-28 2012-02-21 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Method and knitting machine for producing a knitted product from substantially untwisted fibre material

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GB1154304A (en) 1969-06-04
DE1585229B1 (de) 1970-11-12
ES335382A1 (es) 1967-12-01

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