US3922886A - Jack mechanism for circular knitting machines - Google Patents

Jack mechanism for circular knitting machines Download PDF

Info

Publication number
US3922886A
US3922886A US396065A US39606573A US3922886A US 3922886 A US3922886 A US 3922886A US 396065 A US396065 A US 396065A US 39606573 A US39606573 A US 39606573A US 3922886 A US3922886 A US 3922886A
Authority
US
United States
Prior art keywords
jack
slider
rocker
cam
selectively
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
US396065A
Other languages
English (en)
Inventor
James D Moyer
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.)
Boeing North American Inc
Original Assignee
Rockwell International Corp
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
Application filed by Rockwell International Corp filed Critical Rockwell International Corp
Priority to US396065A priority Critical patent/US3922886A/en
Priority to CA205,753A priority patent/CA1008264A/en
Priority to ZA00744885A priority patent/ZA744885B/xx
Priority to GB3434574A priority patent/GB1471458A/en
Priority to AU72004/74A priority patent/AU7200474A/en
Priority to NL7411115A priority patent/NL7411115A/nl
Priority to DE2440107A priority patent/DE2440107A1/de
Priority to CH1199374A priority patent/CH575032A5/xx
Priority to FR7430187A priority patent/FR2243286A1/fr
Priority to SE7411359A priority patent/SE7411359L/xx
Priority to BR7524/74A priority patent/BR7407524D0/pt
Application granted granted Critical
Publication of US3922886A publication Critical patent/US3922886A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D04B15/32—Cam systems or assemblies for operating knitting instruments
    • 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

Definitions

  • a compound cam member having a first camming surface for engaging the operating butt on a selectively raised rocker jack to raise the latter to knitting height and a second camming surface for contacting the operating butts of all non-selected rocker jacks to move them into an inactive position.
  • the slider jack must be raised a sufficient distance so as to raise the needle actuating jack or intermediate jack to a level where its operating butt will be engeged by a cam member and raise said jack to knitting height which in turn will raise its respective needle to the required height to perform its intended function.
  • the improved jack mechanism according to the present invention has overcome the problems described above and provides a mechanism which enables a circular knitting machine to be operated at substantially higher RPMs than has heretofore been possible and includes a safety feature for the positive cancellation of all jacks not positioned for being raised to knitting height.
  • the improved jack mechanism of the present invention includes a slider jack having patterning butts and corresponding pattern controlled selector slide cams which are arranged to selectively raise the slider jack approximately one fourth the distance of slider jacks of known systems.
  • a rocker jack is operatively associated with each sliderjack and intermediate the needle and said rocker jack there is provided a needle lifter jack.
  • the rocker jack includes an operating butt adjacent their lower ends which are rocked outwardly in a known manner from their respective slots by a so-called presser cam.
  • a compound cam member having first and second camming surfaces is disposed so that its first camming surface will engage the operating butts of the rocker jacks selectively raised by their respective slider jacks and raise them the required distance to effect movement of the lifter jack to place its needle at a location to effect its intended function.
  • the second camming surface of this cam member is located so as to engage the operating butts of all rocker jacks not in position to be acted upon by the first camming surface and is effective in moving said jacks to an inactive position.
  • Another object of the invention is to provide an improved rocker jack cam system having means for moving all rocker jacks not selected to an inactive position.
  • a further object of the invention is that of providing a slider jack with a greater range of patterning selectivity for the knitting instrumentalities than has been heretofore possible with known slider jack systems.
  • FIG. 1 is a plan view of a portion of a multi-feed circular knitting machine to which the improved slider jack system according to the invention is applicable,
  • FIG. 2 is a cross-sectional view taken on the line and in the direction of the arrows 2-2 in FIG. 1 showing the slider jack system according to the invention
  • FIG. 3 is a view similar to that of FIG. 2 showing by means of full and dotted lines the limit of movement which the lower end of the rocker jack is moved outwardly by the presser cam,
  • FIG. 4 is a developed view of the cam track formed by the cam means of the invention showing rocker jack butts in both their active and inactive positions,
  • FIG. 5 is a view similar to that of FIG. 3 showing a rocker jack in selected position with its operating butt in engagement with the cam means of the invention
  • FIG. 6 is a plan view of the cam means of the invention showing the operating butt of a rocker jack as it is cammed to an inactive position
  • FIG. 7 is a view similar to that of FIG. 6 but showing the operating butt of a rocker jack in that position where the jack will be raised to knitting height.
  • FIGS. 1 and 2 of the drawings there is shown a portion of a multi-feed circular knitting machine including a frame member 10, a rotatable cylinder 11 having slots 12 for slidably mounting a circle of needles 13.
  • FIG. 2 there is shown a portion of the inner sinker ring at 14, a dial sinker 15, the outer sinker ring 16 with one of its sinkers 17 all of which cooperate with the needles 13 at four knitting stations or feeds indicated diagramatically at 18, 19, 20 and 21 in FIG. 1.
  • each slot 12 of the cylinder 11 there is also slidably mounted a lifter jack 22, a rocker jack 23 and a slider jack 24 having selector butts 25 at a plurality of butt levels which are adapted to be acted on by corresponding pattern controlled selector slide cams one of which is depicted in FIGS. 3, 4 and 5 by numeral 26.
  • the cam member for effecting actuation of the needles 13 is'shown at 27 in FIG. 2 with the usual form of stitch cam deck below said cam identified by numeral 28.
  • a presser cam 29 assembles to the underside of the stitch cam deck 28 by means of a screw 30 and as the cylinder 11 is caused to rotate is effective in rocking the rocker jack 23 from the dotted to solid line position shown in FIG. 3.
  • a jack retaining ring 31 by means of a screw 32 (FIG. 2) assembles to the outside diameter of cylinder and is so disposed as to serve as a guide for the upper portion of the rocker jack 23 and the lower portion of the lifter jack 22.
  • a cam box 33 is positioned below the presser cam 29 and carries a rocker jack lowering cam 34, and the compound cam member of the present invention generally indicated by numeral 35.
  • a slider jack lowering surface 36 (FIGS. 2 and 4) is provided on the underside of this compound cam and is effective on a butt 37 of the slider jack 24 to lower the latter to a position where said butt 37 is in contact with the lower inner surface of a jack stop ring 38 as shown in FIGS. 2 and 3.
  • the rockerjack is provided with an operating butt 39 and all of said jacks prior to entering the area where they will or will not be selectively raised are rocked outwardly to position their butts in the solid line position shown in FIG. 3.
  • a selected rocker jack 23 is raised to that position shown in FIG. 5 whereby its operating butt 39 is in position to be engaged by a first camming surface 40 of the compound cam member 35 and is effective, as shown in FIG. 4, in raising all selected rocker jacks 23 to a knitting height.
  • the operating butt 39 is shown engaging the first camming surface 40 of said cam member which will raise the rocker jack to knitting height.
  • the compound cam member 35 also includes a second camming surface which is identified in FIG. 4 by numeral 41.
  • This camming surface 41 is effective in engaging the operating butts 39 of all rockerjacks not selectively raised and to move the same to the inactive position depicted by the dotted line location of the rocker jack in FIG. 3. When the nonselected jacks are moved to their inactive position this will cause them, as shown in FIG. 4, to move ineffectively below and in front of the first camming surface 40.
  • the operating butt 39 of a non-selected rocker jack 23 is shown engaging the second camming surface 41 of said cam member which will cause said jack to pass ineffectively below and in front of the first camming surface 40.
  • each of the non-selected rocker jacks 23 which had been rocked inwardly to an inactive position at a previous feed by camming surface 41 is engaged by the presser cam 29 just prior to arriving at that position where it will or will not be selected to perform its intended function.
  • Engagement with the presser cam rocks the lower end of the rocker jacks outwardly from the cylinder from the dotted to the solid line position shown in FIG. 3.
  • selector slide cams 26 are moved toward the slider jacks 24 to engage corresponding selector butts 25 thereon.
  • the angle at which the selector slide cams 26 are disposed FIG.
  • rocker jacks not selectively raised by the slider jacks which includes any misaligned jacks, will have their operating butts engaged by the second camming surface 41 of the compound cam member 35 and is effective in moving the lower end of said jack toward the cylinder to the dotted line position shown in FIG. 3.
  • the number of needle actuating elements within each slot of the cylinder, their length, and the short distance they are required to move to accomplish their intended purpose has reduced substantially the generation of frictional heat which is a well known problem of known slider jack systems.
  • the relatively short-distance which the jack elements are required to move in the performance of their functions provides a substantially wider range of patterning possibilities for a greater number of selector butts 25 can be present on each slider jack and the reduced angle at which the selector slide cams 26 are arranged permits a greater number to be disposed one above the other.
  • An improved jack actuating device for circular knitting machines having at least one feed and a rotatable cylinder with slots for slidably mounting a circular series of needles adapted to knit courses at each of said feeds in forming tubular fabric, needle actuating jacks slidably mounted in each of said slots including a lifter jack and a slider jack, said slider jack having selector butts at a plurality of levels thereon which are selectively movable by corresponding pattern controlled selector slide cams in an upward direction to select said needles for knitting courses at said each feed, the improvement comprising:
  • a rocker jack member in said each slot intermediate said lifter jack and said sliderjack having an operating butt adjacent one end thereof and being 6 movable in a radial direction to a radial position relative to the axis of said cylinder by presser means and selectively upward to a predetermined height by said slider jack;
  • cam means having a first cam surface for engaging a second cam surface of said cam means for directing said rocker jack member when not selectively raised said predetermined height by its said slider jack inwardly from said radial position effected by said presser means to an inactive position to pass below and in front of said first cam surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US396065A 1973-09-10 1973-09-10 Jack mechanism for circular knitting machines Expired - Lifetime US3922886A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
US396065A US3922886A (en) 1973-09-10 1973-09-10 Jack mechanism for circular knitting machines
CA205,753A CA1008264A (en) 1973-09-10 1974-07-26 Jack mechanism for circular knitting machines
ZA00744885A ZA744885B (en) 1973-09-10 1974-07-30 Jack mechanism for circular knitting machines
GB3434574A GB1471458A (en) 1973-09-10 1974-08-05 Circular knitting machines
AU72004/74A AU7200474A (en) 1973-09-10 1974-08-05 Knitting machines
NL7411115A NL7411115A (nl) 1973-09-10 1974-08-20 Platine bedieningsmechanisme voor een rond- breimachine.
DE2440107A DE2440107A1 (de) 1973-09-10 1974-08-21 Stoesserbetaetigungsvorrichtung fuer rundstrickmaschinen
CH1199374A CH575032A5 (nl) 1973-09-10 1974-09-04
FR7430187A FR2243286A1 (nl) 1973-09-10 1974-09-05
SE7411359A SE7411359L (nl) 1973-09-10 1974-09-09
BR7524/74A BR7407524D0 (pt) 1973-09-10 1974-09-10 Mecanismo acionador de platinas aperfeicoado para maquinas circulares de malharia

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US396065A US3922886A (en) 1973-09-10 1973-09-10 Jack mechanism for circular knitting machines

Publications (1)

Publication Number Publication Date
US3922886A true US3922886A (en) 1975-12-02

Family

ID=23565704

Family Applications (1)

Application Number Title Priority Date Filing Date
US396065A Expired - Lifetime US3922886A (en) 1973-09-10 1973-09-10 Jack mechanism for circular knitting machines

Country Status (11)

Country Link
US (1) US3922886A (nl)
AU (1) AU7200474A (nl)
BR (1) BR7407524D0 (nl)
CA (1) CA1008264A (nl)
CH (1) CH575032A5 (nl)
DE (1) DE2440107A1 (nl)
FR (1) FR2243286A1 (nl)
GB (1) GB1471458A (nl)
NL (1) NL7411115A (nl)
SE (1) SE7411359L (nl)
ZA (1) ZA744885B (nl)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2306294A1 (fr) * 1975-04-03 1976-10-29 Elitex Zavody Textilniho Machine a tricoter circulaire a plusieurs chutes
DE2731091A1 (de) * 1976-07-21 1978-02-02 Matec Spa Steuerungseinrichtung fuer die hin- und hergehenden stopper von strickmaschinen, insbesondere strumpfwirkmaschinen und aehnlichem
US4137728A (en) * 1977-04-29 1979-02-06 Vanguard Supreme Machine Corporation Cam track for a circular knitting machine
US5142886A (en) * 1989-10-31 1992-09-01 Lonati S.P.A. Circular knitting machine with a device for repreating the selection of the needles at least at one thread feed
US5168730A (en) * 1990-04-27 1992-12-08 Conti Florentia S.R.L. Industrial knitting machine, for working in reciprocating motion and continuous motion and including pattern work
ITBS20120052A1 (it) * 2012-04-05 2013-10-06 Gianmario Pedrini Perfezionamento alle macchine circolari per calzetteria e maglieria

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1631817A (en) * 1926-04-27 1927-06-07 Standardtrump Brothers Machine Circular-knitting machine
US2913887A (en) * 1957-10-29 1959-11-24 Gelmart Knitting Mills Inc Circular knitting machine
US2952147A (en) * 1958-10-22 1960-09-13 Textile Machine Works Means for attaching yarn ends in tubular fabric
US3136145A (en) * 1953-01-06 1964-06-09 Textile Machien Works Knitting machine and method of knitting fabric
US3246486A (en) * 1959-07-06 1966-04-19 Textile Machine Works Pattern means for circular knitting machines
US3530688A (en) * 1968-07-22 1970-09-29 Victor J Lombardi Circular knitting machine
US3662572A (en) * 1969-04-30 1972-05-16 Francesco Lonati Jack selection device for circular knitting machines
US3726110A (en) * 1970-11-12 1973-04-10 Billi Spa Needle raising cams for circular knitting machines
US3742732A (en) * 1969-11-24 1973-07-03 Mayer & Cie Maschinenfabrik Jacquard pattern control arrangement for circular knitting machines
US3802225A (en) * 1971-02-17 1974-04-09 Kirkland & Co Ltd A Knitting machine

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1631817A (en) * 1926-04-27 1927-06-07 Standardtrump Brothers Machine Circular-knitting machine
US3136145A (en) * 1953-01-06 1964-06-09 Textile Machien Works Knitting machine and method of knitting fabric
US2913887A (en) * 1957-10-29 1959-11-24 Gelmart Knitting Mills Inc Circular knitting machine
US2952147A (en) * 1958-10-22 1960-09-13 Textile Machine Works Means for attaching yarn ends in tubular fabric
US3246486A (en) * 1959-07-06 1966-04-19 Textile Machine Works Pattern means for circular knitting machines
US3530688A (en) * 1968-07-22 1970-09-29 Victor J Lombardi Circular knitting machine
US3662572A (en) * 1969-04-30 1972-05-16 Francesco Lonati Jack selection device for circular knitting machines
US3742732A (en) * 1969-11-24 1973-07-03 Mayer & Cie Maschinenfabrik Jacquard pattern control arrangement for circular knitting machines
US3726110A (en) * 1970-11-12 1973-04-10 Billi Spa Needle raising cams for circular knitting machines
US3802225A (en) * 1971-02-17 1974-04-09 Kirkland & Co Ltd A Knitting machine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2306294A1 (fr) * 1975-04-03 1976-10-29 Elitex Zavody Textilniho Machine a tricoter circulaire a plusieurs chutes
US4054041A (en) * 1975-04-03 1977-10-18 Elitex, Koncern Textilniho Strojirenstvi Pattern wheel operated selecting jacks arms
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
US4137728A (en) * 1977-04-29 1979-02-06 Vanguard Supreme Machine Corporation Cam track for a circular knitting machine
US5142886A (en) * 1989-10-31 1992-09-01 Lonati S.P.A. Circular knitting machine with a device for repreating the selection of the needles at least at one thread feed
US5168730A (en) * 1990-04-27 1992-12-08 Conti Florentia S.R.L. Industrial knitting machine, for working in reciprocating motion and continuous motion and including pattern work
ITBS20120052A1 (it) * 2012-04-05 2013-10-06 Gianmario Pedrini Perfezionamento alle macchine circolari per calzetteria e maglieria

Also Published As

Publication number Publication date
SE7411359L (nl) 1975-03-11
GB1471458A (en) 1977-04-27
NL7411115A (nl) 1975-03-12
CH575032A5 (nl) 1976-04-30
BR7407524D0 (pt) 1975-07-08
CA1008264A (en) 1977-04-12
FR2243286A1 (nl) 1975-04-04
AU7200474A (en) 1976-02-05
ZA744885B (en) 1975-08-27
DE2440107A1 (de) 1975-03-13

Similar Documents

Publication Publication Date Title
US2516697A (en) Apparatus for knitting float patterns
US4539825A (en) Device selecting the needles on the dial plate of either single or multiple feed, single cylinder circular knitting machines for the manufacture of ribbed fabric
US3922886A (en) Jack mechanism for circular knitting machines
US3293887A (en) Sinker arrangement and control means for circular knitting machine
US3667254A (en) Horizontal selector jacks and their actuation
US2941383A (en) Dual cam track knitting apparatus
US3851500A (en) Circular knitting machine needle selecting apparatus
US2756574A (en) Cam system of knitting machines
EP0092133A2 (en) Circular knitting machine incorporating a device for renewing a needle selection at at least one yarn feed
US5647230A (en) Needle selection mechanism for circular knitting machine
GB1216588A (en) Improvements in or relating to patterning devices for circular knitting machines
US3742733A (en) Knitting machine
US2025913A (en) Pattern yarn feeding mechanism for knitting machines and method of operating same
US5960645A (en) Device for selecting needles in circular stocking knitting machines
US3783645A (en) Sinker operating cams for circular knitting machines
US2207463A (en) Selective control of sinkers, needles, and jacks
US3365917A (en) Needle control apparatus
US3422638A (en) Circular knitting machines
US3240032A (en) Circular knitting machines
US3967468A (en) Circular knitting machine for producing interlock fabric
US2240421A (en) Circular knitting machine
US1933281A (en) Striping needle dividing mechanism for circular knitting machines
US6295845B1 (en) Thread dispensing device for dispensing thread at a feed of a circular knitting machine
US3457734A (en) Knitting machines
US3289437A (en) Pattern drum indexing for circular knitting machines