US3633387A - Guide means for webs of fabric during drawoff on flat knitting machines - Google Patents

Guide means for webs of fabric during drawoff on flat knitting machines Download PDF

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Publication number
US3633387A
US3633387A US71691A US3633387DA US3633387A US 3633387 A US3633387 A US 3633387A US 71691 A US71691 A US 71691A US 3633387D A US3633387D A US 3633387DA US 3633387 A US3633387 A US 3633387A
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United States
Prior art keywords
fabric
width
selvage
web
steadying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US71691A
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English (en)
Inventor
Walter Worner
Albert Ostertag
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
H Stoll GmbH and Co KG
Original Assignee
H Stoll GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE1947007A external-priority patent/DE1947007C3/de
Application filed by H Stoll GmbH and Co KG filed Critical H Stoll GmbH and Co KG
Application granted granted Critical
Publication of US3633387A publication Critical patent/US3633387A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D04B15/88—Take-up or draw-off devices for knitting products
    • D04B15/90—Take-up or draw-off devices for knitting products for flat-bed knitting machines

Definitions

  • each selvage wire extends through a guide channel in a steadying component, and fabric-guiding elements at the front of the guide channel are spaced apart to provide between them a gap which permits passage therethrough of the web margin, but which will not permit passage of the selvage wire.
  • This invention relates to flat knitting machines of the kind having two needle beds and in which a web of fabric knitted on the needles in either or in both of such beds is drawn off the needles vertically downwardly between the beds by a drawoff roller, and particularly to fabric width retaining means for preventing lateral contraction of the web between the needle beds and the drawoff roller.
  • This invention relates to the provision, in a flat knitting machine for the automatic production of relatively wide webs at least partially knitted on one needle bed only, of fabric width retaining means of a previously proposed form adapted to prevent lateral contraction or drawing-in of the wide web at a location between the relevant needle bed and the drawoff roller, these means comprising width retainers-one at each side of a web being produced-in the nature of selvage" wires arranged at the margins of the fabric.
  • each selvage wire is secured in a holder which is displaceable lengthwise of the needle beds and is adapted to be set in a selected position, depending upon the width of the web being knitted.
  • the selvage wires are disposed in a common vertical plane extending between the needle beds and themselves extend downwardly as far as the fabric drawoff roller.
  • the arrangement of the wires is accordingly such that between successive traverses of the cam carriage of the machine in opposite directions along the needle beds, the yarn being fed to the needles becomes looped around the wires so that the latter prevent a drawing-in of the marginal zones of knitting and consequently enable the web, at least theoretically, to be wound upon the drawoff roller while being continuously maintained at its maximum width as knitted.
  • selvage wires of the form described have not heretofore been wholly successful because it is not practicable either to make the wires of such cross-sectional dimension or of such stiffness as to enable them of themselves to counteract the lateral tension in a knitted web.
  • the wires tend to be pulled inwardly toward one another so that a uniform width of the web being knitted is not, in fact, maintained.
  • the object of the present invention is to provide in a flat knitting machine of the form herein referred to, simple and efficient means for preventing undesirable lateral flexure of the selvage wires with the aim that a knitted web shall be drawn off without any lateral contraction thereof, that is with a uniform width and a regular spacing of the stitches.
  • each selvage wire there is provided an arrangement which forms a gap through which the margins of the fabric pass, that is, the gaps separate the selvage wires from the main body of the fabric.
  • the gaps are of sufficient width to permit the web margins to pass therethrough to the selvage wires, but they are not of sufficient width to permit passage of the selvage wires through the gaps toward the main body of the fabric.
  • the gapdefining arrangements thus prevent lateral wandering or flexure of the selvage wires.
  • each of the two selvage wires extends through a guide channel provided in, and is kept firm by, a steadying component adapted to prevent lateral f'lexure of the wire, the steadying component being furnished at the front of the guide channel therein with fabric-guiding elements spaced from one another to provide between them a gap which though sufficiently wide to permit of the passage therethrough of the relevant margin ofa knitted web looped around the selvage wire is nevertheless narrow enough to prevent lateral wandering of the wire. That is to say, the gap between the fabric-guiding elements is sufficiently narrow to prevent the laterally tensioned selvage wire from escaping from the confines of its guide channel in the steadying component. In this way, the wire is positively prevented from being laterally deflected and drawn inwardly to narrow the web.
  • the fabric-guiding elements may consist of rollers, balls, bars or the like.
  • FIG. 1 is a longitudinal section of only so much of a flat knitting machine as is necessary to illustrate the application thereof to the invention
  • FIG. 2 is a cross section through the machine
  • FIG. 3 is a cross section, drawn to an enlarged scale, through one of the steadying components per se.
  • the illustrated machine is of the Lamb type, the two opposed needle beds 2 and 3, relatively disposed in an inverted V, being mounted on a bed frame 1.
  • a support and guide rod 4 for holders 8 and 9 of two selvage wires 10, 10' is arranged above and parallel to the needle beds.
  • This rod 4 is connected by a web 5 to a longitudinal frame member 5 which is in turn carried by brackets 6 and 7 secured to the bed frame 1.
  • the wire holders 8 and 9 are displaceable axially along the support and guide rod 4 to set the selvage wires 10, 10' a desired distance apart, depending on the width of the knitted web to be produced, screws (one of which is shown in FIG. 2) being provided to secure the said holders in position after an adjustment thereof.
  • the fabric drawoff roller of the machine is designated 11. If desired, a counter pressure roller, such as that indicated at 12 in FIG. 2, may be applied against the drawoff roller 11.
  • the two spaced selvage wires l0, 10' extend vertically downwards from their holders, passing between the needle beds 2 and 3 and terminating at their lower ends at points adjacent to the drawoff roller 11.
  • the two comparatively thick and stiff selvage wires 10, 10 extend vertically downwards through guide channels 16 provided in, and are kept firm by, a pair of opposite-handed steadying components l4 and 15 of block form adapted to prevent lateral flexure of the wires.
  • Each of these steadying components 14 and 15 is furnished, in the illustrated example with two vertically spaced pairs of fabric-guiding rollers l7, l8 and l7, 18 which partially cover the entrance into the vertical guide channel 16 in the component.
  • the fabric-guiding rollers of each pair are spaced from one another to provide between them a gap 19 which, though sufficiently wide to permit of the passage therethrough of a marginal edge or selvage K of a knitted web looped, as shown in FIG.
  • the fabric-guiding rollers also serve to hold the relatively thick and stiff selvage wires back in the guide channels 16.
  • rollers such as l7, l8 and I7, 18, other guide elements such as balls, bars or the like could be used.
  • more than two pairs of guide elements may, if desired, be employed. Again, instead of the two rollers or other guide elements of each pair being arranged in the same horizontal plane, they may be offset relatively to one another so as to be in a plane inclined to the horizontal-with one at a slightly higher level than the other. Or individual, in contradistinction to pairs of, fabric-guiding elements may be arranged in a staggered or zigzag relationship at respectively opposite sides of the vertical guide-channel 16 in the wiresteadying component 14 or 15.
  • the two wire-steadying components 14 and are mounted upon a support and guide rail 13 which is carried by the bed frame 1.
  • the said rail is either fixed to the frame 1 or is displaceably mounted in an appropriate guicleway.
  • the wire holders 8 and 9 are adjustable along and adapted to be set in position upon the rod 4
  • the wire-steadying components 14 and 15 are adjustable and adapted to be secured in the adjusted positions upon the rail 13.
  • a flat knitting machine constructed in accordance with this invention is to be used for the production of predominantly large racked patterns, it is advantageous to displace the selvage wires 10, 10 longitudinally of the machine together with the racked needle bed.
  • the rod 4 and the rail 13 may conveniently be mounted for displacement longitudinally by virtue of being connected by a common stay (FIG. 1) to the needle bed which is to be racked.
  • the holders 8 and 9 for the selvage wires 10, 10' and the associated wiresteadying components 14 and 15 are then enabled to participate in each racking movement of the needle bed.
  • the invention is not limited to the particular form of embodiment illustrated in the drawing: all that is essential is that the selvage wires shall extend through steadying components which permit penetration of the margins of a web being knitted but prohibit lateral escape of the wires.
  • a drawoff roller for drawing off a web of fabric knitted on the needles in either or in both needle beds, and elongate fabric width retainers adapted to be arranged at the margins of the web and extending from the needle beds toward the drawoff roller such that yarn being fed to the needles will be looped around the width retainers and the width retainers will tend to prevent a drawing-in of the marginal zones of knitting and tend to enable the web to be wound upon the drawoff roller at its maximum width as knitted, the improvement comprising: means located at least partially on theweb side of, and adjacent to, each width retainer and defining a gap which will permit passage therethrough of the respective margin of a knitted web but which will not permit passage therethrough of the respective width retainer, and means fixing the position of said gap-defining means, whereby the margins of the fabric extend through the respective gaps to their looped connections with the width retainers, and the width retainers are prevented from lateral wandering by said two last mentioned means.
  • said two lastmentioned means comprise a steadying component adjacent each selvage wire, each steadying component having a guide channel therein through which its associated selvage wire extends, each channel having its open side facing toward the respective fabric margin such that the fabric margin extends into and along the channel, and fabric-guiding elements located adjacent the 0 en side of said channel and spaced from one another to efine said gap, whereby to prevent lateral wandering of said selvage wires and escape thereof from the confines of said guide channels.
  • Apparatus as claimed in claim 6 wherein at least one of said needle beds is capable of being racked, and wherein said guide rail and said guide rod are coupled to said rackable nee dle bed so as to participate in the racking movements thereof.
  • each steadying component includes a plurality of pairs of spaced fabric guiding elements.
  • Apparatus as claimed in claim 8 wherein the two elements ofeach pair are arranged on a common level.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US71691A 1969-09-17 1970-09-14 Guide means for webs of fabric during drawoff on flat knitting machines Expired - Lifetime US3633387A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1947007A DE1947007C3 (de) 1969-09-17 1969-09-17 Flachstrickmaschine

Publications (1)

Publication Number Publication Date
US3633387A true US3633387A (en) 1972-01-11

Family

ID=5745719

Family Applications (1)

Application Number Title Priority Date Filing Date
US71691A Expired - Lifetime US3633387A (en) 1969-09-17 1970-09-14 Guide means for webs of fabric during drawoff on flat knitting machines

Country Status (5)

Country Link
US (1) US3633387A (de)
CH (1) CH515365A (de)
ES (1) ES384158A1 (de)
FR (1) FR2058134A5 (de)
GB (1) GB1254979A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779045A (en) * 1971-06-07 1973-12-18 Schieber Universal Maschf Device for spreading of the knitting on flat-bed knitting machines
US4646544A (en) * 1985-05-24 1987-03-03 H. Stoll Gmbh & Co. Knitting expander device for flat bed knitting machines
CN102071532A (zh) * 2010-07-16 2011-05-25 宁波普罗蒂电脑横机有限公司 一种高效率低成本的电脑横机牵拉机构
CN103696115A (zh) * 2014-01-10 2014-04-02 宁波慈星股份有限公司 横编机中的皮罗拉右托架成套

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1022233A (en) * 1911-07-06 1912-04-02 Class & Flentje Ges Mit Beschraenkter Haftung Automatic take-up device for flat-knitting machines.
GB487312A (en) * 1937-01-12 1938-06-17 Hermann Stoll Improvements in or relating to flat knitting machines and a method of forming edges of fabric produced on the same
US2434782A (en) * 1944-12-09 1948-01-20 British Textile Mfg Company Lt Power-operated flat frame knitting machine
US3250094A (en) * 1963-09-06 1966-05-10 Monk Sutton In Ashfield Ltd Sa Method and apparatus for applying tension to workpieces produced on flat bed fully-fashioned knitting machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1022233A (en) * 1911-07-06 1912-04-02 Class & Flentje Ges Mit Beschraenkter Haftung Automatic take-up device for flat-knitting machines.
GB487312A (en) * 1937-01-12 1938-06-17 Hermann Stoll Improvements in or relating to flat knitting machines and a method of forming edges of fabric produced on the same
US2434782A (en) * 1944-12-09 1948-01-20 British Textile Mfg Company Lt Power-operated flat frame knitting machine
US3250094A (en) * 1963-09-06 1966-05-10 Monk Sutton In Ashfield Ltd Sa Method and apparatus for applying tension to workpieces produced on flat bed fully-fashioned knitting machines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779045A (en) * 1971-06-07 1973-12-18 Schieber Universal Maschf Device for spreading of the knitting on flat-bed knitting machines
US4646544A (en) * 1985-05-24 1987-03-03 H. Stoll Gmbh & Co. Knitting expander device for flat bed knitting machines
CN102071532A (zh) * 2010-07-16 2011-05-25 宁波普罗蒂电脑横机有限公司 一种高效率低成本的电脑横机牵拉机构
CN103696115A (zh) * 2014-01-10 2014-04-02 宁波慈星股份有限公司 横编机中的皮罗拉右托架成套

Also Published As

Publication number Publication date
CH515365A (de) 1971-11-15
GB1254979A (en) 1971-11-24
ES384158A1 (es) 1973-01-01
FR2058134A5 (de) 1971-05-21

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