US3842623A - Knitting machines - Google Patents

Knitting machines Download PDF

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Publication number
US3842623A
US3842623A US00358648A US35864873A US3842623A US 3842623 A US3842623 A US 3842623A US 00358648 A US00358648 A US 00358648A US 35864873 A US35864873 A US 35864873A US 3842623 A US3842623 A US 3842623A
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US
United States
Prior art keywords
movement
support
needles
row
presser foot
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
US00358648A
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English (en)
Inventor
J Flavell
K Jeffcoat
M Betts
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.)
Akzo Nobel UK PLC
Original Assignee
Courtaulds PLC
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Filing date
Publication date
Application filed by Courtaulds PLC filed Critical Courtaulds PLC
Application granted granted Critical
Publication of US3842623A publication Critical patent/US3842623A/en
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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
    • D04B15/88—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

  • This invention relates to a knitting machine having independently operable needles in which sequential operation of needles takes place in successively opposite directions along at least one row of needles.
  • the invention is concerned with such machines which include an element which is arranged to be moved along a row of needles in synchronism with the actuation of the needles and to press down on the knitted loops in such a way as to hold the loops firmly on the needle shanks as the needles rise and fall.
  • the element which will be referred to in this specification as a presser foot, can be arranged to serve in place of a conventional takedown mechanism.
  • the presser foot In a knitting machine having straight needle beds, and needles operated by cams mounted in cam boxes, and in which sequential operation of needles in successively opposite directions along the needle beds is achieved by reciprocation of the cam boxes along the needle beds, the presser foot is normally carried on a support mounted on the cam box carriage, but may be mounted on a centre rail on machines with no carriage bow.
  • two presser feet are associated with each cam system, a different one of the presser feet being arranged to be operative for traverses of the cam box in different directions.
  • a mechanism is incorporated in the machine to move the presser feet alternately into and out of the operative position.
  • a common method of achieving movement of presser feet between operative and non-operative positions has been by an overrunning movement of the presser feet support beyond the length of needle bed over which a presser foot is required to be operative.
  • a mechanism is arranged to operate to change the positions of the two presser feet, or to move a single presser foot to a new position.
  • the length of overrun required to effect this movement adds to the total distance over which the cam box must be moved to achieve a given width of knitting and thus reduces the number of traverses which can be completed in a given time.
  • part of the change-over movement of a presser foot is effected during overrunning movement of a support therefor beyond a point where the presser lefthand portion, the central portion and the right-hand portion, respectively, of a presser feet support for a flat V-bed knitting machine according to the invention, the three Figures together showing the entire presser feet support,
  • FIG. 2 is an isometric view illustrating an alternative arrangement for a catch in a presser feetsupport similar to that of FIGS. 1A-1C
  • the presser feet support 9 shown in FIGS. llA-1C is adapted for mounting above the cam boxes of a V-flat knitting machine, for example on cross-members 10 extending between and secured to the cam boxes (not shown).
  • the support thus reciprocates along the needle beds of the machine together with the cam boxes carrying presser feet 11, 12, 13 and 14 with it.
  • the presser feet are arranged in two pairs ll 12 and 13, 14, each pair being arranged for cooperation with a separate cam system. The arrangement is therefore suitable for a double system V-flat machine.
  • the support comprises two plates 15 and 18 secured to the cross-members 10 by brackets 17 (one of which is not shown).
  • An additional plate 16 is secured by screws and dowels (not shown) to the plate 18.
  • the plate 18 is recessed and in the channel 19 thus formed between theplates l5 and 18 is located a slider 22 to one side of which are fixed shoes 23 engaged in a guideway 24 constituted by a recess in the plate 15.
  • the plate 16 is also recessed and in the channel thus formed between the plates 16 and 18 is located a slider 25, having shoes 21 fixed to it and which are engaged in a guideway 33 constituted by a recess in the plate 16 extending, as does the guideway 24, longitudinally of the support.
  • the sliders 22 and 25 carry abutments which cooperate with fixed stops and catches on the machine so that the movement of the support relative to the stops and catches in the end regions of the reciprocating movement of the cam boxes causes movement of the sliders on the support.
  • a gear train as will also be explained below, translates this movement into movement of the presser feet.
  • the presser feet are carried in pairs 11, 12 and l3, 14 on rigid arms 27 and 28 having extensions 29 and 30, respectively, which are constituted by flexible strips of beryllium-copper alloy.
  • the arms 27 and 28 are pivoted at 31 and 32, respectively, between depending portions 35 and 36 of the plates 15 and 18. Studs 37, 38, 39 and 40 are secured to and extend between the portions 35 and 36 and serve as stops limiting the pivoting movement of the arms 27 and 28.
  • At-their upper ends the arms 27 and 28 are bifurcated to form V- shaped portions having side parts 43, 44 and 45, 46, respectively.
  • a slot 47 or 48 extends from the apex of each V-shaped portion in the direction longitudinally of the associated arm.
  • the arms 27 and 28 are shown in FIG. 1B in positions which put the presser feet 11 and 13 in the operative positions for movement of the support 9 in the direction from left to right along the needle beds (not shown) in FIGS. lA-lC. Movement of the arms27 and v guided by shoes 54 secured to the slider and engaged in a guideway 55 formed in the plate 15.
  • the arm 28 moves in advance of the arm 27.
  • the arm 27 is held, in the attitude shown, by the pin 57 which presses the part 43 downwardly, holding the arm 27 'securely against the stud 37.
  • the arm 28 is held by the pin 58 securely againstthe stud 39. If the slider 51 is moved to the right in FIGS. lA-lC relativeto the support 9, the pins 57 and 58 move along the parts 43 and 45 and impinge on the parts 44 and 46, at this stage upwardly inclined.
  • the slider 22 has an upwardly-projecting abutment 61 or 62 at each end, and at each end of the needle beds of the knitting machine a stop secured to the frame of the machine (not shown) is provided for cooperation with one of the abutments 61 or 62.
  • a stop 63 for cooperation with the abutment 62 is shown.
  • the lower edge of the slider 22 is formed as a rack 65 which is in mesh with a pinion 66 fixedly carried on an axle 67 journalled in the plate I Sand the plate 18.
  • Fixedly, mounted on the axle 67 with the pinion 66 is a smaller pinion 68 which is in mesh with a rack 69 formed on the upper edge of the slider 51.
  • the position of the stop 63 in relation to the movement of the support 9, the slider 22 and its abutment 62 is so arranged that the movement of the slider 22 caused by contact of the abutment 62 with the stop 63 at the end of the rightwards movement of the support 9 is of sufficient extent to move the slider 51 far-enough to rotate the arms 27 and 28 to approxi mately vertical positions (one is a little further advanced than the other). That is, the movement of the slider 22 caused by the stop 63 brings about movement of the presser feet through half of their change-over movement. The remaining half of this changeover movement is brought about by interaction of an abutment 72 on the slider 25 with a catch 73.
  • An abutment 74 on the slider 25 is arranged for cooperation with a catch (not shown) similar to the catch 73 but located atthe opposite end of the'neeclle beds.
  • the catch .73 is mounted for vertical movement on a bracket 75 fixed to the frame of the knitting machine and is urged downwardly by a spring 76 secured to the bracket and the catchjWhen the support 9 is nearing the end of its rightwards traverse, in FIGS.
  • the slider 22 is connected with the slider 25 by a pinion 77 located in a hole 78 in the plate 18 and in mesh with the pinion 66.
  • the pinion 77 is fixedly carried on a shaft 79 journalled in'the plates 15 and 16, and the pinion 77 extends through the plate 18 and is in mesh with a pinion 82 located in a recess 80 in the plate 16.
  • the pinion 82 is in mesh with a pinion 83 also located in the recess 80 and having the same number of teeth as the pinion 66.
  • the pinion-83 is in mesh with'a rack 84 formed on the underside of the slider 25 and the gear ratios in the gear train between the slider 22 and the slider 25 are such that movement of either of the sliders in a 'given direction on the support 9iresults in an equal movement of the other slider in theopposite direction on the support.
  • a bluffing cam 85fixed on the support 9 moves beneath the catch 73 as the support moves to the rightbeneath the catch in FIG. lC,-the catch riding I up over the bluffing cam during this movement.
  • the inclined surface 86.v of the abutment 72 on the slider 25 next meets the catch 73 and pushes it up and the abutment 72 moves on past thecatch.
  • the abutment 72 is held by the catch 73 so that the slider 25 remains stationary whilst the support 9 moves to the left and re-traverses the overrun distance to the point at which the presser feet are required to operate as mentioned above.
  • the slider 25 moves to the right on the support causing leftwards movement of the slider 22 on the support through the action of the train of pinions 83, 82, 77 and 66, the pinion 66 rotating anti-clockwise.
  • the continued anticlockwise rotation of the pinion 66 is accompanied by anticlockwise rotation of the pinion 68 fixedly carried on the same shaft 67, and this rotation of the pinion 68 causes the rightwards movement of the slider 51 on the support 9 to-continue, thus completing the changeover movement of the arms 27 and 28 and the presser feet.
  • the abutment 72 remains trapped by the catch 73 until the bluffing cam 85 is brought back by the leftwards movement of the support 9 to a position beneath the catch.
  • the catch is then pushed upwards by the bluffing cam 85 and the abutment 72 is released allowing the slider 25 to. move to the left with the support 9.
  • the cam 85 has two inclined faces 87 and 88 enabling it to lift the catch 73 when moving in either direction relative to the catch 73.
  • a further bluffing cam 89 similar to the cam 85 is provided on the support 9 to release the abutment 74 from the further catch (not shown) corresponding to the catch 73 but located at the opposite end of the needle beds.
  • the bluffing cam 85 and the abutment 72 are so positioned that the movement of the slider 25 on the support 9 caused by engagement of the catch 73 with the abutment 72 is sufficient to move the slider 22 to the limit of its leftwards movement on the support and to complete the changeover of the presser feet so that presser feet 12 and 14 are located in their operative positions for the leftwards traverse of the support 9 along the needle beds.
  • the sliders 22 and 25 are located in the required positions for cooperation with the stop and catch (not shown) corresponding to
  • the operation of the arrangement shown in FIG. 2 is as follows: When the presser feet support approaches the left-hand limit of its movement, the pin 103 enters the cam track 102. The abutment 61 by-passes the catch 97 and comes up against the stop 92. Further movement of the support causes movement of the sliders 22 and 25 as described in relation to FIGS. 1A1C.
  • FIG. 2 illustrates an alternative arrangement for a catch to cooperate with the abutment 74 on the slider 25 (not shown in FIG. 2).
  • the abutment 61 on the slider 22 (not shown in FIG. 2) cooperates, at the lefthand end of the needle beds, with a stop 92 which acts in the same way as the stop 63 on the abutment 62 at the right-hand end of the needle beds in the case of the embodiment shown in FIGS. lA-lC.
  • a catch bar 94 mounted on a bracket 93 fixed to the frame (not shown) of the knitting machine is a catch bar 94 which can pivot about a pin 95.
  • the bar 94 is urged downwardly by a spring 96 wrapped round the pin 95 and having one end located in a hole in the bracket 93 and the other end hooked over the bar 94.
  • a catch 97 At the free end of the bar 94 is formed a catch 97.
  • a guard 98 fixed on the bracket 93 limits upward movement of the bar 94.
  • a cam plate 99 is secured on the plate 15 and is formed with a cam track 102.
  • a pin 103 projects from the catch 97 for cooperation with the cam track 102.
  • said machine comprising:
  • a knitting machine as claimed in claim 1, said machine further comprising sliders movable on said support, mechanism interconnecting said sliders and said presser foot to effect changeover movement of said presser foot, abutments on said sliders, and stops and catches fixed on said knitting machine for cooperation with said abutments at the ends of movements of the supprt along said row of needles to move said sliders on said support.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US00358648A 1972-05-12 1973-05-09 Knitting machines Expired - Lifetime US3842623A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2233072A GB1419956A (en) 1972-05-12 1972-05-12 Knitting machines

Publications (1)

Publication Number Publication Date
US3842623A true US3842623A (en) 1974-10-22

Family

ID=10177640

Family Applications (1)

Application Number Title Priority Date Filing Date
US00358648A Expired - Lifetime US3842623A (en) 1972-05-12 1973-05-09 Knitting machines

Country Status (8)

Country Link
US (1) US3842623A (enrdf_load_stackoverflow)
JP (1) JPS5542167B2 (enrdf_load_stackoverflow)
CH (1) CH566414A5 (enrdf_load_stackoverflow)
DE (1) DE2323688C2 (enrdf_load_stackoverflow)
FR (1) FR2185279A5 (enrdf_load_stackoverflow)
GB (1) GB1419956A (enrdf_load_stackoverflow)
HK (1) HK6479A (enrdf_load_stackoverflow)
IT (1) IT985895B (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952553A (en) * 1974-03-27 1976-04-27 Edouard Dubied Et Cie (Societe Anonyme) Stopping apparatus for a rectilinear knitting machine
US3973416A (en) * 1974-03-27 1976-08-10 Edouard Dubied Et Cie (Societe Anonyme) Knitting machine
US4027504A (en) * 1976-07-12 1977-06-07 Robert Dietschy Stitch presser for knitting machine
US4080806A (en) * 1977-02-03 1978-03-28 Institute For Industrial Research And Standards Knitting machine
US4081973A (en) * 1976-03-31 1978-04-04 Fabrique Nationale Herstal S.A. Multi level presser-foot device
US4083203A (en) * 1976-05-31 1978-04-11 Fabrique Nationale Herstal S.A. Knitting process utilizing multi-level presser foot
USRE29861E (en) * 1975-11-25 1978-12-19 Edouard Dubied Et Cie Stitch presser for knitting machine
DE3214536A1 (de) * 1981-04-28 1982-11-11 Shima Idea Center Co Ltd., Wakayama Maschenpressvorrichtung fuer flachstrickmaschinen
US4378682A (en) * 1979-10-03 1983-04-05 Courtaulds Limited Presser foot for a knitting machine
US4433560A (en) 1979-07-13 1984-02-28 Courtaulds Limited Presser foot for a knitting machine
US4463577A (en) * 1981-02-09 1984-08-07 Universal Maschinenfabrik Dr. Rudolf Schieber Gmbh & Co. Flat knitting machine having a presser foot device
US20040221621A1 (en) * 2001-08-24 2004-11-11 Takuya Miyai Loop presser, flatbed knitting machine having loop presser, and fabric knitting method using loop presser

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE42266B1 (en) * 1976-02-03 1980-07-02 Inst For Ind Res & Standards A knitting machine
GB1588970A (en) * 1976-11-22 1981-05-07 Courtaulds Ltd Knitting machine mechanism
GB1566137A (en) * 1977-01-18 1980-04-30 Ewe Hosiery Loop hold-down device for use in conjunction with a knitting machine
DE3120554C2 (de) * 1981-05-22 1984-01-05 Universal Maschinenfabrik Dr. Rudolf Schieber GmbH & Co KG, 7081 Westhausen Flachstrickmaschine mit Einstreicheinrichtung
KR102037564B1 (ko) 2013-04-19 2019-10-28 스미또모 가가꾸 가부시키가이샤 절삭 가공 방법 및 절삭 가공 장치

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5022135Y2 (enrdf_load_stackoverflow) * 1971-02-15 1975-07-03

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973416A (en) * 1974-03-27 1976-08-10 Edouard Dubied Et Cie (Societe Anonyme) Knitting machine
US3952553A (en) * 1974-03-27 1976-04-27 Edouard Dubied Et Cie (Societe Anonyme) Stopping apparatus for a rectilinear knitting machine
USRE29861E (en) * 1975-11-25 1978-12-19 Edouard Dubied Et Cie Stitch presser for knitting machine
US4081973A (en) * 1976-03-31 1978-04-04 Fabrique Nationale Herstal S.A. Multi level presser-foot device
US4083203A (en) * 1976-05-31 1978-04-11 Fabrique Nationale Herstal S.A. Knitting process utilizing multi-level presser foot
US4027504A (en) * 1976-07-12 1977-06-07 Robert Dietschy Stitch presser for knitting machine
US4080806A (en) * 1977-02-03 1978-03-28 Institute For Industrial Research And Standards Knitting machine
US4433560A (en) 1979-07-13 1984-02-28 Courtaulds Limited Presser foot for a knitting machine
US4378682A (en) * 1979-10-03 1983-04-05 Courtaulds Limited Presser foot for a knitting machine
US4463577A (en) * 1981-02-09 1984-08-07 Universal Maschinenfabrik Dr. Rudolf Schieber Gmbh & Co. Flat knitting machine having a presser foot device
DE3214536A1 (de) * 1981-04-28 1982-11-11 Shima Idea Center Co Ltd., Wakayama Maschenpressvorrichtung fuer flachstrickmaschinen
US20040221621A1 (en) * 2001-08-24 2004-11-11 Takuya Miyai Loop presser, flatbed knitting machine having loop presser, and fabric knitting method using loop presser
US6883352B2 (en) * 2001-08-24 2005-04-26 Shima Seiki Manufacturing Limited Loop presser, flatbed knitting machine having loop presser, and fabric knitting method using loop presser

Also Published As

Publication number Publication date
GB1419956A (en) 1975-12-31
IT985895B (it) 1974-12-20
JPS4954662A (enrdf_load_stackoverflow) 1974-05-28
HK6479A (en) 1979-02-16
CH566414A5 (enrdf_load_stackoverflow) 1975-09-15
DE2323688A1 (de) 1973-11-29
FR2185279A5 (enrdf_load_stackoverflow) 1973-12-28
DE2323688C2 (de) 1983-12-29
JPS5542167B2 (enrdf_load_stackoverflow) 1980-10-29

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