US3688526A - Arrangements in flat jacquard knitting machines for avoiding damage in the event of faulty positioning of needles or jacks - Google Patents

Arrangements in flat jacquard knitting machines for avoiding damage in the event of faulty positioning of needles or jacks Download PDF

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Publication number
US3688526A
US3688526A US114300A US3688526DA US3688526A US 3688526 A US3688526 A US 3688526A US 114300 A US114300 A US 114300A US 3688526D A US3688526D A US 3688526DA US 3688526 A US3688526 A US 3688526A
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United States
Prior art keywords
operating
cam
positions
butts
butt
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Expired - Lifetime
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US114300A
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English (en)
Inventor
Walter Worner
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
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H Stoll GmbH and Co KG
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Publication date
Application filed by H Stoll GmbH and Co KG filed Critical H Stoll GmbH and Co KG
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Publication of US3688526A publication Critical patent/US3688526A/en
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/10—Indicating, warning, or safety devices, e.g. stop motions

Definitions

  • pivotable cams are provided in front of the lock parts to, depending on the position of the butt of the faultily positioned jack or needle, either correctly land the butt on the lock part or to pivot and move the butt to its base position. Stop motion switches are arranged to be actuated by the cams when they pivot to move a butt to the base position.
  • the object of the present invention is to obviate any such interference not only by displacing to safe positions any needle and jack butts which are in faulty positions in which they are liable to cause damage, but also by effecting stoppage of the machine before any damage to individual elements of the machine is inflicted.
  • each such means comprises a spring loaded pivotable double crank or lever which is arranged in advance of a run-in lock part, in the path of the butt of a faultily positioned needle or jack, and is provided with a cam piece having an inclined face, the said cam piece, depending on the point at which a faultily positioned needle or jack butt meets it, either acting on that butt to correctly land it onto the run-in lock part, or, by virtue of the ability of the double lever to pivot, depressing the butt and so returning the faultily positioned needle or jack to its base position.
  • a stop motion switch arranged to be actuated by pivoting motion of the double lever so as to initiate stoppage of the knitting machine.
  • the or each double lever carrying a cam piece may be in the form of a rotatable disc. The extent of pivotal movement of the or each double lever is limited by suitable stops.
  • FIG. 1 is a front view of the said devices which are diagrammatically shown in relation to a part of a lock and jack butts.
  • FIG. 2 is a front view corresponding to FIG. I but with upper and lower jack butts shown in exemplary faulty positions.
  • FIG. 3 is a cross section through a needle bed of a flat knitting machine showing the devices, also in section, arranged over the bed, and showing also a different type of spring for loading the pivotable elements in their normal positions.
  • a casing 11 is fastened to the lock plate 10 so that it'lies a little in front of the lock parts 8 and 9.
  • Rotatably mounted in this casing 11 are two spring loaded discs 12 and 13 which act as double levers or cranks.
  • One lever arm of the disc 12 is furnished with a cam piece 14 while the other arm of the same disc has projecting from it a striker pin 18 to which is anchored a tension spring 16( FIGS. 1 2) by means of which the said pin is pulled to one end of an arcuate slot 21 formed in a cover plate 20 of casing 1 1.
  • one lever arm of the disc 13 is equipped with a cam piece 15 while the other arm has projecting from it a striker pin 19 to which is anchored a tension spring 17 by which the pin 19 is pulled to one end of another slot 22 in the cover plate 20.
  • the double levers, i.e. discs, 12 and 13, and with them the cam pieces 14 and 15, are thus held by the springs 16 and 17 in pre-set positions. These positions are such that the inclined faces 14' and of the cam pieces 14 and 15 respectively assume approximately the same angles as the cam angles of the lock parts 8 and 9. If, therefore, a jack butt 6 in position F (FIG.
  • a jack butt 6 could sometimes be alternatively moved to a faulty position in relation to the disc 12 corresponding to the position F in relation to the disc 13; conversely, a jack butt 7 could sometimes be moved to a faulty position in relation to the disc 13 corresponding to the position F in relation to the disc 12, with results similar to those already described.
  • micro switches 23 and 24 are arranged above the striker pins 18 and 19, respectively.
  • Each striker pin is adapted, whenever the cam piece on the corresponding disc is contacted and swung down by a faultily positioned butt to act upon a spring contact of the relevant micro switch.
  • the spring contact 25 of the micro switch 23 is arranged to be acted upon by the striker pin 18 on the disc 12
  • the spring contact 26 of the micro-switch 24 is similarly arranged to be acted upon by the striker pin 19 on the disc 13.
  • the said micro switches are connected in known fashion with the stop motion of the machine.
  • the improvement comprising means for avoiding damage in the event of faulty positioning of such an operating butt of an operating element, said means comprising cam means arranged in advance of and movable with a lock part and in the path of a faultily positioned operating butt for either moving said butt toward its operating position sufficiently to correctly land it on to the lock part or for depressing said butt and returning it to its base portion, depending on the location of said faultily positioned operating butt between its operating and i liggziigi ds zi s set forth in claim 1 wherein said cam means comprises a pivotally mounted cam member resiliently biassed to a normal position and having at least one cam surface normally oriented for moving certain encountered operating butts toward their operating positions for correct landing on to the corresponding lock part, and for pivoting when encountering certain other operating butts so as to depress said other operating but
  • said cam means comprises a pivotally mounted cam member having a cam surface, means resiliently biassing said cam member to a normal orientation wherein said cam surface will encounter all operating butts within a certain range of faulty positions and cam them in a first direction, and said cam member will encounter all other operating butts in a certain other range of faulty pdsitions and pivot so as to reverse said normal orientation of said cam surface and move said other operating butts in the opposite direction.
  • cam means comprises a cam member mounted on a pivotally mounted disc in the manner of a crank arm, said cam member extending from said disc so as to encounter faultily positioned operating butts, said disc being positioned to clear said operating butts.
  • Apparatus as claimed in claim 4 further comprising a pin member mounted on the other side of said disc for actuating a stop motion switch in response to pivotal movement of said disc.
  • Apparatus as claimed in claim 3 further comprising a stop motion switch, and means for actuating said switch in response to pivotal movement of said cam member.
  • machine lock includes at least two run-in lock parts, and one of said cam means is located in advance of each run-in lock part.
  • Apparatus as claimed in claim 3 further comprising stops defining the normal orientation and the maximum pivoted orientation of said cam member.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US114300A 1970-02-13 1971-02-10 Arrangements in flat jacquard knitting machines for avoiding damage in the event of faulty positioning of needles or jacks Expired - Lifetime US3688526A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702006550 DE2006550A1 (de) 1970-02-13 1970-02-13 Vorrichtung fur Flachstrickmaschinen, insbesondere Jacquard Flachstrickmaschinen zur Vermeidung von Störungen bei fehler hafter Nadel und Stoßerstellung

Publications (1)

Publication Number Publication Date
US3688526A true US3688526A (en) 1972-09-05

Family

ID=5762170

Family Applications (1)

Application Number Title Priority Date Filing Date
US114300A Expired - Lifetime US3688526A (en) 1970-02-13 1971-02-10 Arrangements in flat jacquard knitting machines for avoiding damage in the event of faulty positioning of needles or jacks

Country Status (5)

Country Link
US (1) US3688526A (de)
CH (1) CH517856A (de)
DE (1) DE2006550A1 (de)
FR (1) FR2078238A5 (de)
GB (1) GB1281855A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2731091A1 (de) * 1976-07-21 1978-02-02 Matec Spa Steuerungseinrichtung fuer die hin- und hergehenden stopper von strickmaschinen, insbesondere strumpfwirkmaschinen und aehnlichem

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW449600B (en) * 1994-04-19 2001-08-11 Takeda Chemical Industries Ltd Condensed-ring thiophene derivatives, their production and use

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US749672A (en) * 1904-01-12 Stitch-cam for knitting-machines
US1534972A (en) * 1925-01-21 1925-04-21 Leviton Adolph Needle-operating mechanism for knitting machines
US3115021A (en) * 1962-01-29 1963-12-24 Banner Company Picking mechanism
US3115022A (en) * 1962-03-14 1963-12-24 Draper Corp Knitting mechanism
US3429145A (en) * 1965-08-27 1969-02-25 Karl Steinhof Apparatefabrik F Cam carriage for knitting machine
US3449931A (en) * 1965-10-01 1969-06-17 Agency Ind Science Techn Method and device for detecting a break in knitting needles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US749672A (en) * 1904-01-12 Stitch-cam for knitting-machines
US1534972A (en) * 1925-01-21 1925-04-21 Leviton Adolph Needle-operating mechanism for knitting machines
US3115021A (en) * 1962-01-29 1963-12-24 Banner Company Picking mechanism
US3115022A (en) * 1962-03-14 1963-12-24 Draper Corp Knitting mechanism
US3429145A (en) * 1965-08-27 1969-02-25 Karl Steinhof Apparatefabrik F Cam carriage for knitting machine
US3449931A (en) * 1965-10-01 1969-06-17 Agency Ind Science Techn Method and device for detecting a break in knitting needles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2731091A1 (de) * 1976-07-21 1978-02-02 Matec Spa Steuerungseinrichtung fuer die hin- und hergehenden stopper von strickmaschinen, insbesondere strumpfwirkmaschinen und aehnlichem
US4112712A (en) * 1976-07-21 1978-09-12 Macchine Tessili Circolari Matec S.P.A. Rocking jack safety device

Also Published As

Publication number Publication date
CH517856A (de) 1972-01-15
DE2006550A1 (de) 1971-08-26
FR2078238A5 (de) 1971-11-05
GB1281855A (en) 1972-07-19

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