US3614878A - Flat knitting method and apparatus - Google Patents

Flat knitting method and apparatus Download PDF

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Publication number
US3614878A
US3614878A US772728A US3614878DA US3614878A US 3614878 A US3614878 A US 3614878A US 772728 A US772728 A US 772728A US 3614878D A US3614878D A US 3614878DA US 3614878 A US3614878 A US 3614878A
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Prior art keywords
knitting
needle assemblies
butt
needle
displacing means
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US772728A
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English (en)
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Matias Mestre Mas
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Individual
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B7/00—Flat-bed knitting machines with independently-movable needles
    • D04B7/02—Flat-bed knitting machines with independently-movable needles with one set of needles

Definitions

  • the displacing means is used to displace selected needles to inoperative positions, the loops carried thereby are transferred to needles which continue to participate in the knitting, and the displacing means preferably takes the form of swingable butt-engaging members which turn about a predetermined axis to produce the displacement of selected needle assemblies.
  • the present invention relates to knitting and in particular to fiat knitting.
  • the present invention relates especially to that part of a knitting apparatus and method which brings about a change in the width of a knitted fabric. For example, during the knitting of the neck or collar regions of a garment it is necessary to gradually reduce the width of the knitted fabric.
  • the known constructions are relativelycomplex and do not operate with the precision which is desired. Furthermore, with the known construction difliculties are encountered in incorporating the known constructions into existing knitting machines.
  • the decrease or increase in the needle assemblies participating in the knitting operations of the fiat knitting machine so as to provide for the production of clothing having decreasing width, for example, at the neck or collar regions, is brought about while transferring loops with respect to the needles which are displaced between their operative and inoperatiive positions.
  • the longitudinally shiftable needle assemblies include butts engaged by butt-engaging members of the displacing means of the invention, so that through these butt-engaging members one or more needle assemblies can be shifted between operative and inoperative positions while transferring loops between needle assemblies so as to bring about the desired decrease or increase in the number of loops and thus provide for the garment a shape conforming to a portion thereof which changes in width such as the neck or collar region.
  • FIG. 1 is a diagrammatic illustration of the primary components of a flat knitting machine carriage provided with the structure of the invent ion, FIG. 1 showing components situated to the right and to the left and in front of and behind the carriage;
  • FIGS. 2A-2F illustrate six consecutive positions of one set of components to illustrate the sequential operating which take place during selections of needles displaced with respect to other needles of this series;
  • FIGS. 3A-3C are schematic longitudinal sections through the needle bed illustrating three sequential positions of the components.
  • the mechanism illustrated therein includes cams 1 and 2 for raising needles at the rear portion of the carriage and cams 3 and 4 for raising needles at the forward portion of the carriage.
  • the illustrated structure also includes cams 5 and 6 for raising the jack sinkers at the rear part of the carriage and cams 7 and 8 for raising the jack sinkers at the front part of the carriage.
  • the structure illustrated in FIG. 1 also includes, as shown at the central portion of FIG. 1, cams 9, E10, 11 and 12 which are the stitchor loop-forming cams and which are arranged in pairs, as illustrated. These pairs of loop-forming cams are respectively arranged at the front of and to the rear of the conventional faces of the moving carriage of the knitting machine. These stitch or loop-forming cams are analogous to those provided in standard flat knitting machines.
  • the present invention resides primarily at the zones of A, B, C, and D of FIG. 1.
  • the elements situated at zone A are perfectly symmetrical with respect to those situated at zone B, and in the same way the elements situated at zone C are symmetrical with those situated at zone B.
  • the elements in these zones are of two types, namely cams and displacing means for displacing needle assemblies, this displacing means taking the form of buttengaging members.
  • the latter include a butt-engaging member 13 at zone A and its equivalent counterpart 13 a at zone B.
  • These members 13 and 13a have two basic positions, namely the shaded position representing the inoperative position and the unshaded position representing the operative position.
  • zones A and B include a butt-engaging member 14 with its symmetrical counterpart 14a at zone B, and it will be noted that there are also butt-engaging members 15 and 15a respectively situated symmetrically with respect to each other at zones A and B. Finally, there are butt-engaging components 16 and
  • the groups of symmetrically arranged cams of the zones A and B are shown at 17 and 17a, 18 and 18a, and 19 and 19a, respectively, with these pairs of cams carrying out separate and specific functions, as will be apparent from the description below.
  • FIG. 1 The arrangement illustrated in FIG. 1 is completed by the components shown at the zones C and D, these components also being symmetrically arranged and including the butt-engaging members 20 and 20a, 21 and 21a and 22 and 22a, these latter members also being illustrated in a shaded manner at their inoperative locations and in an unshaded manner at their working locations.
  • FIGS. 2A-2F illustrate the sequence of operations which take place at the zone A, and it is to be understood that corresponding operations take place symmetri cally at the zone B.
  • the first and eighth needle assemblies of the series of needle assemblies are displaced with the method and apparatus of the invention.
  • a part of the cam 119 is illustrated as well as the buttengaging members 15 and 16,, which are shown in FIG. 2A in their operative location.
  • a previously set pattern selecting mechanism of known construction brings about the automatic situation of the members 15 and 16 in the operative positions illustrated at the proper instant in a fully automatic manner.
  • FIG. 2B illustrates the parts at an instant after their positions shown in FIG. 2D where during the continued movement of the members 15 and 16 about their common turning axis the first assembly has been raised still further and the eighth needle assembly is advancing 4 under its own momentum toward the cam 19, and at the final position shown in FIG. 2F, the members 15 and 16 have reached their inoperative positions and the first and eighth needle assemblies will continue under their own momentum until they reach the cam 19.
  • the knitting bar 28 is shown therein in three sequential positions, respectively.
  • the needle butt 29 of the illustrated assembly and the butt 30 of the jack sinker shown at their relative elevations with respect to the cam assemblies 3, 4 and 7, 8, respectively, the structure also including the spring member 31 which in position of FIG. 3A is inoperative with respect to the cams, 7, 8 and 3, 4.
  • This latter position of the spring 31 is maintained as a result of the rod 32 which in this position of the parts is situated within the notch 33 at the free end of the lower limb of spring 31, as viewed in FIGS. 3A-3C.
  • the spring has an inclined portion 34 which engages the rod 32 when the spring 31 is in its operative position.
  • the structure includes the plurality of butt-engaging members 13 and 14, 15 and 16 forming the displacing means of the invention and their corresponding symmetrical counterparts at the zone B together with those at the other side of the carriage, these butt-engaging members ascending in order to place the jack sinkers and needles of the needle assemblies into or out of operation.
  • the butt-engaging member 13 When the butt-engaging member 13, knownas an increasing member, is in its unshaded, operative position, it engages the butts of the first two jack sinkers which are in their inoperative positions and lifts them until the members 13 and 13a reach their shaded, inoperative positions, thus displacing the corresponding jack sinkers and needles of the needle assemblies into operative knitting positions, so that these members 13 and 13a of the displacing means of the invention can bring about an increase in the width of the fabric by introducing more needles into the knitting operations.
  • the butt-engaging members 14, 15 and 16 together with their symmetrical counterparts and those on the other side of the carriage, are decreasing members and always act in unison to displace needle assemblies from operative to inoperative positions where they will no longer participate in the knitting operations.
  • the buttengaging members 15 and 16, and their counterparts, will respectively raise the first and eighth needle assemblies of the series 26 while these members 15 and 16 move from their unshaded, operative to their shaded, inoperative, positions, as described above in connection with FIGS. 2A-2F.
  • the needle assemblies will follow the profile of the cams 19 or 19a, these cams acting as transfer cams so as to cause the loops or stitches to be transferred over to the needle assemblies on the opposite needle head where these loops or stitches are received.
  • This result is achieved because just prior thereto the cams 24 and 24a have been actuated so as to perform their specific function of opening the tongues or latches of the needles, and also the earns 23 and 23a have been actuated so as to perform their specific function of receiving the loops or stitches, these cams being associated with the opposite side of the carriage.
  • the first and eighth needles of the series descend, and when the first needle assembly has a butt thereof impinging against the butt-engaging member 14 or 14a of the displacing means of the invention, with these latter members in the unshaded positions, so that the members 14 or 14a have at this time been automatically situated beyond their shaded inoperative positions in the unshaded operative positions by the automatic mechanism referred to above.
  • FIGS. 3A-3C the jack sinker of each needle assembly is shown after the butt 30 thereof has been raised by the butt-engaging member 13 or 13a until the butt 30 reaches the position shown in FIG. 3C.
  • the jack sinker continues to rise due to the action of the cams 7 and 8 on the butt 30 of the jack sinker, until the jack sinker reaches the position shown at FIG. 3B.
  • the jack sinker has acted upon the butt 29 of the needle of the needle assembly so as to displace the needle all the way out to the position shown at FIG. 3B.
  • the above-described structure of the invention provides a simple and highly effective means for increasing or decreasing the width of a knitted garment, as at the neck or collar region thereof.
  • a series of needle assemblies displaceable in opposed directions between operative and inoperative locations, and displacing means coacting with preselected needle assemblies of said series for displacing the selected needle assemblies in one of said directions to bring about a change in the width of the knitted fabric, said needle assemblies respectively including butts to be engaged by said displacing means, and said displacing means including swingable butt-engaging members to engage the butts of selected assemblies to displace the latter axially during swinging of said butt-engaging members, said butt-engaging members turning about a predetermined axis, and said displacing means turning a plurality of said butt-engaging members as a unit while engaging a plurality of said assemblies, for simultaneously displacing the latter.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US772728A 1967-11-11 1968-11-01 Flat knitting method and apparatus Expired - Lifetime US3614878A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES347504A ES347504A1 (es) 1967-11-11 1967-11-11 Mecanismo para disminuir y aumentar agujas en maquinas tri-cotosas.

Publications (1)

Publication Number Publication Date
US3614878A true US3614878A (en) 1971-10-26

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Application Number Title Priority Date Filing Date
US772728A Expired - Lifetime US3614878A (en) 1967-11-11 1968-11-01 Flat knitting method and apparatus

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US (1) US3614878A (enrdf_load_stackoverflow)
BE (1) BE719361A (enrdf_load_stackoverflow)
CH (1) CH498964A (enrdf_load_stackoverflow)
DE (1) DE1760437A1 (enrdf_load_stackoverflow)
ES (1) ES347504A1 (enrdf_load_stackoverflow)
FR (1) FR1568694A (enrdf_load_stackoverflow)
GB (1) GB1230821A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4154067A (en) * 1976-05-18 1979-05-15 Veb Wirkmaschinenbau Karl-Marx-Stadt Cam slides capable of effecting loop transfer in two opposite directions during cam slide travel in a single direction
US4669280A (en) * 1985-09-04 1987-06-02 Atelier De Construction Steiger S.A. Camholder for a flat-bed knitting machine and knitting machine equipped with such a cam holder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013014584B3 (de) * 2013-08-29 2014-11-13 Sächsisches Textilforschungsinstitut e.V. Verfahren und Vorrichtung zur Herstellung von Kettengewirken mit variabler Breite

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4154067A (en) * 1976-05-18 1979-05-15 Veb Wirkmaschinenbau Karl-Marx-Stadt Cam slides capable of effecting loop transfer in two opposite directions during cam slide travel in a single direction
US4669280A (en) * 1985-09-04 1987-06-02 Atelier De Construction Steiger S.A. Camholder for a flat-bed knitting machine and knitting machine equipped with such a cam holder

Also Published As

Publication number Publication date
GB1230821A (enrdf_load_stackoverflow) 1971-05-05
FR1568694A (enrdf_load_stackoverflow) 1969-05-23
CH498964A (de) 1970-11-15
DE1760437A1 (de) 1972-04-06
ES347504A1 (es) 1969-06-01
BE719361A (enrdf_load_stackoverflow) 1969-01-16

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