US3866441A - Composite sliders - Google Patents

Composite sliders Download PDF

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Publication number
US3866441A
US3866441A US333457A US33345773A US3866441A US 3866441 A US3866441 A US 3866441A US 333457 A US333457 A US 333457A US 33345773 A US33345773 A US 33345773A US 3866441 A US3866441 A US 3866441A
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United States
Prior art keywords
body portion
hook
needle
trick
slider
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Expired - Lifetime
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US333457A
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English (en)
Inventor
Roland Peberdy
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Bentley Engineering Co Ltd
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Bentley Engineering Co Ltd
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/10—Circular knitting machines with independently-movable needles with two needle cylinders for purl work or for Links-Links loop formation
    • 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

  • ABSTRACT [30] Foreign A li ti P i it D t Slider for superimposed cylinder type knitting ma- F 1972 G 7797 72 chine having an end face for end-wise engagement e red n Am with a hook of a needle in a trick of the knitting ma- 152] US. Cl. 66/14 chine and a hook for abutting the hook of the needle [51] Int.
  • SHEET 10F 3 PATENTEB FEB 1 81975 SHEET 30F 3 PIC-33 COMPOSITE SLIDERS The invention relates to sliders for use in knitting machines of the superimposed needle cylinder type, that is to say knitting machines having axially opposed needle cylinders mounted one above the other, a set of double ended latch needles for operation in the tricks ofthese cylinders, a corresponding set of needle actuating sliders located in the tricks of each cylinder, and bottom and top cam systems for operating the sliders whereby the needles can function in either cylinder, and may be transferred from one cylinder to the other according to knitting requirements.
  • sliders have been constructed in one piece with a recess which serves to engage one of the hooks of a double ended latch needle in order to move a needle up and down as required.
  • the sliders are moved axially and radially with respect to the needle cylinders under the control of slider raising and lowering cams for the axial move ment and dividing cams or presser cams for the radial movement.
  • clearances have to be provided between the slider recesses and the needle hoks.
  • a composite slider for a superimposed cylinder type knitting machine which composite slider comprises a first slider part for sliding in a trick of a needle cylinder of the knitting machine and having an end face for endwise engagement with a hook of a needle in the trick and a second slider part receivable on the first part. movable with respect thereto and having a hook for abutting with the hook of the needle from a position masting the hook of the needle, and means on the first and second part for controlling their movement individually.
  • the needle hook can be latched between said end face and slider hook as required.
  • the second slider part may be moved radially outward by a dividing cam engaging a slanted camming surface at the tip of the second slider part.
  • opposed faces of the first and second slider parts are adapted to give a camming action so as to move the hook of the slider part away from the first slider part as the end face and hook are moved apart lengthwise of the composite slider. ln this way a rocking or outward radial motion is performed by the second slider part along using the camming action between the first and second slider parts when the parts are moved relatively endwise in an axial direction with respect to the cylinders to release or receive a needle. If the needle tricks vary in depth to a small degree. no objectionable differences will occur in the relative position of the hook of the slider and the needle hook in different tricks when the slider hook is rocked outwards.
  • controlling means comprise a butt on the first slider part spaced from the'end face and a butt on the second slider part spaced from the slider hook, the butts being arranged so that the two butts are spaced only a short distance when the two slider parts are in a needle engaging or needle latching position.
  • the controlling means are arranged to prevent lengthwise movement of the hook to the endface when both abut with the needle.
  • the butt of the second slider part is at the end of that part and spaced by a short edge of the first slider part from the butt thereon, the short edge being of such a length that it prevents crushing of the hook or hooks by the two parts being moved together beyond the needle engaging position of the composite slider.
  • the second slider part is provided with a second actuating butt adjacent the slider book.
  • the camming action aforementioned between the first and second slider parts may be achieved by having the slider parts appropriately shaped along their outer and inner edges respectively.
  • the opposed lengthwise edges of the first and second slider parts are stepped and have slanted portions arranged to provide a camming action between the first and second slider parts when the slider parts are moved relatively lengthwise.
  • the two slanted cam portions may each have a concave arcuate shape.
  • the second slider part extends beyond the hook and is provided with a recess for receiving a spring band urging all second slider parts inwards and a wedge shaped tip to act as a latch opener.
  • the slider hook can extend backwards into the needle hook.
  • the cam system of the knitting machine having composite sliders of the invention is preferably devoid of presser or dividing cams for the purpose of needle transfer.
  • the cam system is provided with cams for penetrating between the butts controlling movements of the first and second slider parts to cause relative endwise movement of the slider parts as required for needle transfer.
  • the cam system has a transfer section arranged to transfer all needles in the top cylinder to the bottom cylinder and a selecting system for transferring selected needles up to the top cylinder.
  • the cam system thus preferably comprises cams for controlling the first and second slider parts separately so as to provide for transfer downward of all needles in one cylinder to the other cylinder and a needle selecting arrangement for moving selected sliders in the other cylinder into the path of further cams for controlling the first and second slider part separately so as to provide for transfer of selected needles to that one cylinder.
  • the composite slider and the needle engaged by the slider are capable of two way movement without end play, the needle closely following the loop forming movements of the slider when activated by the cams in the cam-box.
  • Disengagement of the needle from the composite slider during needle transfer is brought about in a very simple manner by interposing a cam between the butts on the two slider portions which causes endwise movement of the outside portion in relation to the inside portion of the slider, to bring the slider hook clear of the end of the needle and to bring the camming faces into contact.
  • FIG. 1 is a vertical section at position I-l of FIG. 2 through the knitting head of a circular knitting machine of the superimposed needle cylinder type according to the invention.
  • FIG. 2 is a development of a transfer section of the top and bottom cam systems of the machine of FIG. 1 as seen from the inside;
  • FIG. 3 shows part sectional views of a needle and the relevant top and bottom sliders at successive stages of transfer in the transfer section of FIG. 2.
  • a double cylinder machine has a rotary bottom or plain needle cylinder 1 and an axially opposed and similarly rotatable top or rib needle cylinder 2.
  • the superimposed cylinders l and 2 have longitudinally extending tricks 3 and 3' respectively in which are arranged double ended latch needles 4.
  • a bottom cylinder slider comprising two composite parts 5, 6 and an opposed top cylinder slider comprising two composite parts 5, 6'.
  • the composite sliders in the top and bottom cylinders are of identical construction.
  • Each slider comprises an inside or rear portion 6 which has a flat inside edge resting in the trick and an outside or front portion 5 which is received on the rear portion 6.
  • the rear portion 6 at one end has a face 6b for abutting with the needle hook and at the other end has a raised portion with a flat edge 6d which carries an actuating butt 6a on the slider portion 6.
  • the slider portion 6 has between the face 6b and the raised portion an outside face which is terraced into two edges substantially parallel to the trick surface and connected by a concave arcuate shoulder 6c which faces the raised portion.
  • the raised portion has a section extending from the butt 6a and connected by a square shoulder to the lower terraced edge of the outside face.
  • the front portions 5 have a wedge shaped tip 9 mounted on an extension 8 at one end and a low actuating butt 5b at the other end.
  • the inside face of the front portion 5 which rests on the outside face of the rear portion 6 has formed on its terraces connected by a concave arcuate shoulder 5d complementary to the outside face of the rear portion 6.
  • the low butt 5b abutts with the square shoulder of the raised portion the outside face of the rear portion 6 contacts the inside face of the front portion 5 over its whole length apart from where the concave arcuate shoulders are spaced opposite one another.
  • the inside face of the front portion 5 has formed on it a hook or tongue 5c at a position opposite the face 6b.
  • the outside face of the front portion 5 apart from the low actuating butt 5b also has a further high actuating butt 5a adjacent the hook 5c and a recess for a band spring S near the wedge tip 9.
  • the hook formation 51' serves and is shaped to interengage the hook ll of the relevant double ended needle 4.
  • the tip or extension 8 is adapted to retain the engaged needle in position at the back of its trick, and terminates with the wedge tip 9 which serves to open and guard the latch 10 of the associated hook.
  • the band spring S received in the recess near the wedge tip 9 encircles all sliders in a particular cylinder to provide control by urging them inwards.
  • the face 6b of the rear slider portion 6 serves to contact the opposed hook 11 of the engaged needle.
  • the two arcuate shoulders 5d and 6c serve to provide the camming action when it is necessary to disengage the hook 5c of the slider from the hook ll of the needle.
  • a stationary bottom cam-box or shell 7 Surrounding the bottom cylinder 1 is a stationary bottom cam-box or shell 7 to which are fitted the cams of a bottom cam system for operating the composite slider 5, 6 whilst a stationary top cam-box 7' surrounds the top cylinder 2 and carries the cams of a top cam system for actuating the composite sliders 5', 6'.
  • the cam boxes comprise a transfer section which serves to transfer all needles to the bottom cylinder and then to raise selected needles to the top cylinder and a knitting section.
  • the transfer section of the cam box for the top cylinder comprises a transfer control bolt cam 20 which acts on the butt 6a of the sliders to lower them after emerging from a continuous cam track T, both the butt 6a and the butt 5b passing through a downward extension of the cam track T which is defined by the cam 20 and by a continuous cam 30 opposite.
  • the transfer section further is provided below and aside of the cam 20 and above the cam 30 with a cam 23 for penetrating between the butts 6a and 5b to divide them into separate cam tracks. These cam tracks are formed by the cam 23 and 30 to move the butts 6a and 5b apart and then to keep them apart whilst the composite slider as a whole is moved up.
  • the top transfer section further has a cam 25 which with the cams 23 and 30 serves to move the butts 6a and 5b together and further upward back into the horizontal section of the cam track T.
  • the transfer section of the bottom cylinder cam box has a bolt cam 21 which causes the butts 5b and 6a of the sliders in the bottom cylinder emerging from a horizontal cam track to be separated and to be moved apart.
  • a cam 22 is positioned after cam 21 to move the butts 5b and 6a together again into the horizontal track.
  • a slider selection mechanism to move the sliders into either of two different tracks.
  • the slider selection mechanism comprises a pattern selecting device 32 which acts on selected pattern jacks 33 only. Certain jacks are not raised whilst others have their butt 33a raised to enter a track which causes the jacks to rise over a jack raising cam 31.
  • the jacks have upper edges 33b which serve to engage the edge 6d of the selected sliders to raise them.
  • the butts 5b and 6a of certain composite sliders remain in the horizontal cam track after passing the cam 21, whilst the butts 5b and 6 a of other sliders i.e. those which are raised by the jacks, enter separate cam tracks defined by a transfer control cam 24 and a continuous cam 28 mounted above it.
  • the sliders After passing the cam 24, the sliders are lowered to the horizontal cam track by a slider lowering cam 26 which acts on the butt 5a.
  • cam 30 and above the cam 28 are provided further continuous cams 29 and 27 respectively. All continuous cams 27 to 30 are provided with recesses or relieved portions to allow the front slider portions 5 and 5 to rock as required.
  • a needle 4 and its associated sliders 5, 6 and 5, 6 passes through the cam-box sections 7 and 7 moving from right to left in the direction of the arrow X in FIG. 2.
  • the position A represents a stage of the knitting process wherein the needle 4 is latched by its hook 11 to its slider 5, 6 in the top cylinder 2 with the slider 5, 6 disengaged in the bottom cylinder 1 as also shown in FIG. 1. Further rotation of the needle cylinders l and 2 causes the butt 6a contained in the track T to move down the angular face a of the transfer control bolt cam 20 carrying the composite sliders 5, 6 and needle 4 with it.
  • the portion 5 undergoes a substantial radial movement until the shoulders rest on the terraced faces of the portions 5 and 6. Further movement of the slider portions will only have a marginal effect on radial movement. Thus byraising the portions 5 only slightly with respect to the portions 6, the portions 5 make all movements necessary to cause the slider hooks to clear the needle hooks.
  • the cams 27 and 28 in the bottom cam-box 7 are relieved on the inwardly directed face to permit the displacement of the portion 5 of the composite sliders when transfer of the needle 4 takes place from the top cylinder 2 to the bottom cylinder 1.
  • the slider butt 5b on the slider 5 in the bottom cylinder engages the cam 22 on face 220, thus lowering this portion of the slider until the tongue 5c engages the hook ll of the needle 4 between stage B and C.
  • the needle 4 is then latched to the top slider 5 and the bottom slider 5. Further movement through the cam boxes brings the butt S'b into contact with the cam 23 in the top cam box 7.
  • the pattern jack 33 is not selected to pass over the jack raising cam 31. In this way the butts 5b and 6a pass below the cam 24 shown at stage E in FIG. 2, while the slider 5 in the top cylinder 2 is retracted because the butt 5b progressively engages the faces a, b and c of the cam 30 (see also stage E in FIG. 3).
  • the pattern jack 33 located in the same trick 3 below the slider 6 is selected by a pattern selecting device 32 to engage the jack raising cam 31 when approaching stage D.
  • the advance of the butt 33a on the pattern jack 33 up the face 31a of the cam 31 causes the upper edge 33b of the jack 33 to come into contact with the lower edge 6d of the slider portion 6 thus raising the slider 5 and the needle 4 until the butts 5b and 6a take up a position shown at stage D in FIGS. 2 and 3.
  • the associated slider 5' in the top cylinder 2 progresses along the cam 23 with the butt 5']?
  • all needles can be distributed between top and bottom cylinders as required and can then be moved past a knitting station to make a plain or rib stitch as desired.
  • the two slider portions are caused to act in unison by cams acting on the butts of each of the two slider portions.
  • cams acting on the butts of each of the two slider portions For example while butts 5a, 5b and Sa. 5'b are acted on to lower the needle to a stitch draw position, butts 6a, 6a are acted on to move the needle to a latch clearing position.
  • the butts 5b, S'b, 6a and 6a conveniently pass through a common cam track, such as cam track T after the transfer stage.
  • each of said sliders is a composite slider comprising:
  • first and second body portions being movable lengthwise relative to one another by actuation of the first and second butts between a first position in which a needle hook is held firmly between said end face of the first body portion engaging the outside of the needle hook and said hook of the second body portion engaging the inside of said needle hook, and a second position in which the hook of the second body portion is separated lengthwise from said end face of the first body portion to enable the composite slider to engage or disengage the needle hook.
  • a composite slider according claim 1 in which said second body portion is disposed outwardly of said first body portion in said trick, said slider comprising cooperating means on said first and second body portions for moving said hook of said second body portion out of the path of movement of the needle hook when said first and second body portions are moved relative to one another to said second position.
  • a composite slider according to claim 2 in which said cooperating means comprise shoulders mutually facing sides of said first and second sliders, at least one of said shoulders being inclined, said shoulders being positioned to override one another wnen said first and second body portions are moved relative to one another to said second position and thereby move said hook of said second body radially outwardly of the needle cylinders.
  • a composite slider according to claim 1 in which said second body portion has a pointed latch guard extension and a recess for receiving a spring band.
  • a composite slider for a knitting machine having coaxial needle cylinders with aligned tricks, needles slidable in said tricks and transferable from one cylinder to another, said needles having hooks at opposite ends, said slider comprising:
  • said firstand second body portions fitting together to form an elongate composite slider and being movable longitudinally relative to one another by said actuating butts between a first position in which a needle hook is held firmly between said end face of the first body portion engaging the outside of the needle hook and said hook of the second body portion engaging the inside of the needle hook,
  • a superposed cylinder type knitting machine having coaxial needle cylinders with aligned needle tricks, double hook latch needles in said tricks and composite sliders for actuating said needles.
  • each of said sliders comprising an elongate first body portion longitudinally slidable in a needle cylinder trick and having at one end an end face for abutting the outside of a hook of a needle in said trick and adjacent the other end a first actuating butt,
  • said first and second butts projecting radially outwardly of said first and second body portions for engagement by slider actuating cams separately to control lengthwise movement of said first and second body portions in said trick
  • a cam system comprising cams engageable with said actuating butts to move said first and second body portions longitudinally in said trick and longitudinally relative to each other between a first position in which a needle hook is held firmly between said end face of the first body portion abutting the outside ofthe needle hook and said hook of the second body portion, and a second position in which said hook of the second body portion is separated lengthwise from said end face of the first body portion to enable the composite slider to engage or disengage the needle hook.
  • a knitting machine in which said second body portion overlies said first body portion in the trick with an inner longitudinal side of the second body portion slidably engageable with an outer longitudinal side of the first body portion, said second body portion having on said inner side a cam portion engageable with a cooperating cam portion on said outer side of the first body portion to move said hook of the second body portion radially outwardly of the needle cylinder so as to be located out of the path of movement of the needle hook when said first and second body portions are moved longitudinally relative to one another to said second position.
  • a knitting machine in which a third actuating butt is provided on the second body portion between said second butt and said hook.
  • a knitting machine in which the second body portion has a pointed latch guard extension with a recess on the radially outer side of said extension, and in which a spring band surround ing the needle cylinder is received in said recess to urge the second body portion radially inwardly of the needle cylinder.
  • a composite slider for a knitting machine havng coaxial needle cylinders with aligned tricks, needles slidable in said tricks and transferable from one cylinder to another, said needles having hooks at opposite ends.
  • said slider comprising:
  • said first and second body portions fitting together to form an elongate composite slider and being slidably longitudinally relative to one another by said actuating means between a first position in which a needle hook is held between said end face of the first body portion engaging the outside of the necdle hook and said hook of the second body portion engaging in the same needle hook, and a second position in which said hook ofthe second body portion is separated lengthwise from said end face of the first body portion sufficiently to enable the composite slider to engage or disengage the needle hook,
  • said first body portion and second body portion having cooperating cam portions for moving the hook of the second body portion radially outwardly of the needle cylinder so as to be located out of the path of movement of the needle hook when said first and second body portions are moved longitudinally relative to one another to said second position 15.
  • said first actuating means comprises an actuating butt on said first body portion and said second actuating means comprises an actuating butt on said second body portion, said butts projecting outwardly for engagement individually by slider actuating cams separately to control lengthwise movement of said first and second body portions in said trick.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US333457A 1972-02-19 1973-02-20 Composite sliders Expired - Lifetime US3866441A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB779772A GB1421741A (en) 1972-02-19 1972-02-19 Composite sliders

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US3866441A true US3866441A (en) 1975-02-18

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US333457A Expired - Lifetime US3866441A (en) 1972-02-19 1973-02-20 Composite sliders

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US (1) US3866441A (en, 2012)
JP (1) JPS4893751A (en, 2012)
CS (1) CS176222B2 (en, 2012)
DE (1) DE2308096C3 (en, 2012)
ES (1) ES411780A1 (en, 2012)
FR (1) FR2172740A5 (en, 2012)
GB (1) GB1421741A (en, 2012)
IT (1) IT988124B (en, 2012)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5367893A (en) * 1992-02-21 1994-11-29 Uniplet A.S. Selecting device with swingable selecting jack
DE102014115345A1 (de) 2014-10-21 2016-04-21 Groz-Beckert Kg Maschinenstricknadel, Anordnung zur Maschenbildung sowie Verwendung dieser Anordnung in einer Strickmaschine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107641889A (zh) * 2016-07-21 2018-01-30 陈晓东 一种对筒针织大圆机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1644426A (en) * 1926-11-03 1927-10-04 Gentsch Theodore Weeding tool
US1682087A (en) * 1924-02-14 1928-08-28 Muller Emilie Elsa Round-knitting machine
US1720606A (en) * 1926-07-15 1929-07-09 Wilhelm Leilich Knitting machine
US1926814A (en) * 1927-01-27 1933-09-12 Scott & Williams Inc Apparatus for knitting seamless stockings
US3404546A (en) * 1967-01-30 1968-10-08 Singer Co Links and links knitting machine with pivotal jacks
US3678710A (en) * 1969-02-25 1972-07-25 Bentley Mach Dev Co Needle operating means in knitting machines

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2590407Y2 (ja) * 1993-05-28 1999-02-17 加藤電機株式会社 原稿圧着板開閉装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1682087A (en) * 1924-02-14 1928-08-28 Muller Emilie Elsa Round-knitting machine
US1720606A (en) * 1926-07-15 1929-07-09 Wilhelm Leilich Knitting machine
US1644426A (en) * 1926-11-03 1927-10-04 Gentsch Theodore Weeding tool
US1926814A (en) * 1927-01-27 1933-09-12 Scott & Williams Inc Apparatus for knitting seamless stockings
US3404546A (en) * 1967-01-30 1968-10-08 Singer Co Links and links knitting machine with pivotal jacks
US3678710A (en) * 1969-02-25 1972-07-25 Bentley Mach Dev Co Needle operating means in knitting machines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5367893A (en) * 1992-02-21 1994-11-29 Uniplet A.S. Selecting device with swingable selecting jack
DE102014115345A1 (de) 2014-10-21 2016-04-21 Groz-Beckert Kg Maschinenstricknadel, Anordnung zur Maschenbildung sowie Verwendung dieser Anordnung in einer Strickmaschine
EP3012363A1 (de) 2014-10-21 2016-04-27 Groz-Beckert KG Maschinenstricknadel, anordnung zur maschenbildung sowie verwendung dieser anordnung in einem verfahren auf einer strickmaschine
DE102014115345B4 (de) 2014-10-21 2019-04-25 Groz-Beckert Kg Maschinenstricknadel, Anordnung zur Maschenbildung sowie Verwendung dieser Anordnung in einer Strickmaschine

Also Published As

Publication number Publication date
IT988124B (it) 1975-04-10
DE2308096C3 (de) 1979-07-26
ES411780A1 (es) 1976-01-01
JPS4893751A (en, 2012) 1973-12-04
FR2172740A5 (en, 2012) 1973-09-28
GB1421741A (en) 1976-01-21
CS176222B2 (en, 2012) 1977-06-30
DE2308096B2 (de) 1978-11-16
DE2308096A1 (de) 1973-08-30

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