US3576115A - Loop-retaining arrangement for a circular knitting machine - Google Patents

Loop-retaining arrangement for a circular knitting machine Download PDF

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Publication number
US3576115A
US3576115A US843377A US3576115DA US3576115A US 3576115 A US3576115 A US 3576115A US 843377 A US843377 A US 843377A US 3576115D A US3576115D A US 3576115DA US 3576115 A US3576115 A US 3576115A
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United States
Prior art keywords
needle
holding
needles
edge
supporting surface
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Expired - Lifetime
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US843377A
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English (en)
Inventor
Gerhard Schmidt
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Franz Morat GmbH
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Franz Morat GmbH
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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
    • D04B15/18—Dials
    • 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
    • D04B15/10—Needle beds

Definitions

  • the loop-retaining devices according to the prior art cannot be used for circular knitting machines of the type including a needle cylinder and a dial. If a circular knitting machine has a stationary cam box, the required stationary pressure on the knitted fabric requires a very complicated mechanism. It cannot be applied to knitting machines with rotating cam box since the stripper would produce a sliding friction on the yarn which would damage the same and increase the pull exerted by the loops on the needles when the same move to the knit position.
  • a tuck stitch is formed of a plurality of tuck loops or tuck floats in connection with a holding loop.
  • a tuck stitch may include up to five tuck loops which, together with the holding loop, are cast off in the seventh course.
  • the relief pattern is interrupted since the tuck stitch is not tensioned.
  • Another object of the invention is to retain the needle loops by an extremely simple device requiring only a few changes of an existent knitting machine.
  • Another object of the invention is to provide a loop retaining device for a circular knitting machine which retains the loops in such a manner that the dial loops and the cylinder loops have the same small size.
  • Another object of the invention is to retain the holding loops of tuck stitches of a double-rib fabric in such a position on the respective needles that they are caught by the needle hooks during the movement of the needle from the tuck position to the castoff position.
  • the present invention provides holding members alternating with the needles and having holding edges confronting the needles spaced from the same so that the loops on the needles are retained by the holding edges of adjacent holding members when the advancing movement of the needle tends to drag the loops along.
  • One embodiment of the invention is used in a circular knitting machine which has cylinder needle means and dial means with needle-supporting surfaces bounded by circular edges, respectively, and a set of needles mounted on each needle-supporting surface for movement in a knitting direction beyond the circular edge of the respective needlesupporting surface to and from an advanced knit position.
  • a set of holding members is secured to at least one of the needle-supporting surfaces in a position alternating with the needles mounted on the same.
  • Each holding member has a holding portion projecting from the respective circular edge, and having a holding edge connecting the free end o'fthe projecting holding portion with the respective circular edge.
  • the holding edge is spaced from the respective needle-supporting surface and from the respective adjacent needles in a direction transverse to the respective needle-supporting surface.
  • the projecting holding members are particularly efficient if provided on the needle-supporting surface of the dial alternating with the dial needles, but it is also possible to provide the holding members on the cylindrical needlesupporting surface of the needle cylinder alternating with the cylinder needles, or to provide both, the dial, and the needle cylinder with a set of holding members, which alternate with the dial needles and the cylinder needles, respectively.
  • the improvement of the present invention can be provided in a very simple manner by replacing he standard ridges with the projecting holding members of the invention.
  • the holding edge of a holding member according to the invention can be constructed in different ways.
  • a straight holding edge extends between the free end of the projecting holding portion, and the circular edge of the respective needle-supporting surface, and is slanted to the same.
  • the holding edge is curved and concave toward the needles and the respective needlesupporting surface. The curve is preferably parabolic and has its apex located in the circular edge of the respective supporting surface.
  • the holding edge has in the region of the free end of the projecting holding portion, an edge portion spaced from the respective adjacent needles and being parallel to the respective needle-supporting surface, and this edge portion is connected by a shoulder with the circular edge of the respective needle-supporting surface.
  • the holding members of the dial have projecting portions projecting in radial direction from the circular peripheral edge of the dial.
  • the holding members of the needle cylinder have holding portions projecting from the upper circular edge of the needle cylinder upward and parallel to the axis of the same.
  • FIG. 1, FIG. 2 and FIG. 3 are fragmentary vertical sectional views illustrating a first embodiment of the invention in three operational positions, parts of the knitting machine which have no bearing on the present invention being omitted for the sake of clarity and simplicity;
  • FIG. 4 is a fragmentary elevation illustrating the embodiment of FIGS. 1 to 3 in the operational position of FIG. 2, but on a reduced scale;
  • FIG. 5 is a schematic diagram illustrating the loop formation of a relief patterned knitted fabric incorporating tuck stitches
  • FIG. 6, FIG. 7 and FIG. 8 are fragmentary vertical sectional views illustrating the embodiment of FIGS. 1 to 3 applied during the knitting of the relief-pattemed fabric, showing three different operational positions;
  • FIG. 9, FIG. and FIG. 11 are fragmentary sectional views illustrating three different embodiments of holding members according to the invention which can be used in the embodiments of FIGS. 2 and 6;
  • FIG. 12 is a fragmentary front elevation illustrating the embodiment of FIGS. 6 to 8 at a reduced scale.
  • FIG. 13 is a fragmentary view illustrating the holding member of FIG. 11 cooperating with a dial needle in the tuck position.
  • cylinder needles I are mounted on the peripheral circular needle-supporting surface 3a of a needle cylinder 3 for movement in axial direction between the retracted position in FIG. I, the intermediate position shown in FIGS. 2 and 4, and the advanced knit position shown in FIG. 3.
  • Guide ridges 6 alternate with cylinder needles I, and have upper ends adjacent the circular upper edge 3b of needle cylinder 3.
  • a dial 4 has a planar needle-supporting surface 4a on which dial needles 2 are mounted for radial movement between the retracted position shown in FIG. I, the intermediate position shown in FIGS. 2 and 4, and the advanced knit position shown in FIG. 3. Instead of guide ridges, holding members 5 are secured to the needle-supporting surface 40 alternating with dial needles 2.
  • Each holding member 5 has a holding portion projecting from the circular peripheral edge 4b of dial 4, and in the embodiment illustrated in FIGS. 1 to 4, the projecting portion has a free end with an end face 5b, a shoulder 5a projecting upward from the circular edge 4b, and a horizontal edge portion 50 connecting the free end of the projecting portion with shoulder 5a so that a cutout is formed in each holding member 5 whose holding edge portion is located not only above the needle-supporting surface 40, but also above the highest points of the adjacent dial needles 2 when the same have been advanced as shown in FIGS. 2 and 3.
  • the last loop 7 formed on cylinder needle I is connected with the last loop 9 formed on dial needle 2, and loops 7 and 8 are respectively connected with a previously formed cylinder loop 8 and a previously formed dial loop 10.
  • the dial needles 2 are circumferentially staggered in relation to the cylinder needles I, and consequently a cylinder needle I and a holding member 5 are located in a common radial plane passing through the common axis of the needle cylinder 3 and the dial 4.
  • the holding member 5 which is located in the same radial plane as the illustrated cylinder needle 1, is omitted for the sake of clarity, and the holding member 5 is shown to be located behind the dial needle 2 which is behind the cylinder needle 1.
  • Another cylinder needle 1 is located behind dial needle 2 in the same radial plane as the illustrated holding member 5.
  • Dial needles 2 and cylinder needles 1 are simultaneously moved outward and upward, respectively, so that they are at the same time in the knit position. During this movement, the loop on the cylinder needle I may be dragged upward so that the loop hanging on the dial needle 2 is also raised to such a degree that the thick needle portion can slip through this loop, but cannot move higher than permitted by the horizontal holding edge 50 which, as best seen in FIG, I, is below the point of the hook of the dial needle.
  • the loop hanging on the dial needle is thus reliably located behind the needle latch during the outward movement of the dial needle, in order to form a stitch with a new loop.
  • the holding member is provided between cylinder needles on members 6, the same effect is produced.
  • the holding member 5 and its holding edge 50 prevents not only the dragging up of the loop of the dial needle 9, even if the loop is outward dragged along part of e holding edge 5c, but also obtains the result that the loops of the cylinder needles and the corresponding dial needles 7 have the same size. This is due to the cooperation of the horizontal holding edges 5c, whose position and length is suitably connected, with the needles and needle loops.
  • a disadvantage of forming the pattern by means of the cylinder needles is that, if no holding members 5 in accordance with the present invention are provided, the dial loops 9 are drawn out to be larger than the cylinder needle loops, and are pierced by the points of the hooks of the dial needles moving to the castoff position. The same disturbance occurs with the dial needle loops when the pattern is made by the dial needles.
  • FIG. 4 shows in connection with FIG. 2 that the two loops 7 and 9 on the cylinder needles and dial needles, respectively, and the sinker loop between the same, cannot be deformed into a straight line. Since the needle loops and the sinker loops are small, the loops 7 on cylinder needles 1 can only be raised to the position shown in FIG. 3 located below the needle latch when the needles are in the advanced knit position.
  • FIG. 5 illustrates a relief pattern fabric which has courses a to n, cylinder needle wales A, C, E, G, J, and dial needle wales B, D, F, H, and K.
  • Tuck stitches 14 are knitted on the cylinder needles
  • tuck stitches 15 are knitted on the dial needles.
  • Each tuck stitch has a holding loop 14, and 15 respectively, coming from the courses d, g, and k, and also has two tuck loops coming from the courses b and c, e and f, and h and i, respectively.
  • the tuck loops 14a and 14b, respectively 15a and I5b of the tuck stitches 14 and 15, have the effect that the jersey loops of the wales A to K are bent rearward in the cour ses b, c, d and h, i, and k, and forward in the courses e,f, g and l, m, n so that a relief pattern is formed.
  • FIGS. 6, 7, 8 and 12 illustrate the use of the embodiment of FIGS. 1 to 4 for a relief-patterned knitted fabric, and for the sake of simplicity, it is assumed that the relief-patterned fabric shown in FIGS. 6 to 8 and 12 has tuck stitches 15 only in the dial needle wales B, D, F, H and K. It is, of course, also possible to make tuck stitches only on the cylinder needles 1 corresponding to the tuck stitches 14 in the wales A, C, E, G and J. In either fabric, the outward bending appears only on one side of the fabric.
  • holding members 5 alternate with dial needles 2 and have a cutout bounded by a holding edge portion 50 which is parallel to the needlesupporting surface 4a of the dial.
  • Guide ridges 13 are located in the same radial planes as the holding members 5, but are separated from the same a distance y.
  • Guide members 12 are located between adjacent cylinder needles I and are separated from guide ridges 6 a distance x, for reasons which have no bearing on the present invention.
  • a modification is shown in broken lines in which the guide member 6 has a holding portion 6b projecting beyond the circular upper edge 3b of the needle cylinder 3, and having a slanted holding edge 17 cooperating with the needle loops of the adjacent cylinder needles I.
  • FIGS. 6 to 8 illustrate a holding member 5 with a horizontal holding edge portion 5c
  • holding member 51 has a free end face 5b, and a straight holding edge 17 connecting the free end face 5b with the circular edge 4b of dial 4.
  • holding member 52 has a concave holding edge 18 connecting the free end face 5b with the circular edge 4b of the dial 4.
  • the holding member 53 has a concave parabolic holding edge 19 whose apex is located in the region of the outer circular edge 4b.
  • FIGS. 9 to II can be used instead of the holding member 5, or instead of the guide member 6 shown in -FIG,. 6, depending on operational conditions, the selected pattern, and the properties of the yarn.
  • needles 1 and 2 are in the knit position, and cylinder needles 1 and dial needles 2 catch a new yarn, a yarn 16 being shown for the cylinder needle la.
  • the new loops 7 are pulled through the old loops I0, and the new loop 9 formed by the dial needles 2 is pulled through the holding loop 15' and the tuck loops 15a and 15b to form a tuck stitch 15.
  • the holding edge 5c, 17, I8, or I9 of holding member 5 prevents a rising of the tuck loops 150 or 15b, or of the holding loop 15 in a direction perpendicular to the stem of the dial needle, as best seen in FIG. l2.
  • the free end face 5c of holding member 5 ends at the horizontal holding edge 50. It is apparent from the drawing that the loop portions 15a, 15b, 15c cannot rise upward because they are retained by the horizontal holding edges 50.
  • the holding edges shown in FIGS. 9 to 11 have the same effect.
  • the wales knitted by the cylinder needles 1 and dial needles 2 are shown in adjacent positions in FIGS. 6, 7 and 8 in order to clearly show the interconnection between the cylinder needle loops and dial loops. Actually, the wales are located behind each other because they are pulled downward in the direction of the arrow 11 by conventional device.
  • the loop-retaining arrangement of the invention can not only be used for circular knitting machines in which the needle cylinder and dial rotate, and the cam box is at a standstill, but also for circular knitting machines in which the needle cylinder and dial are at a standstill, and the cam box rotates.
  • holding members cannot only be provided on the dial, but also on the needle cylinder, or only provided on the needle cylinder, and omitted on the dial, in which even tuck stitches 14 would be made on the cylinder needles. If holding members 5 and 6 with holding edges as explained above, are used in connection with the needle cylinder and the dial, the relief pattern shown in FIG. 5 having tuck stitches in adjacent dial needle wales and cylinder needles wales can be knitted efficiently on the circular knitting machine.
  • the number of tuck loops of which the tuck stitches are formed is immaterial, and it is only the purpose of the invention to prevent that the loops of which the tuck stitches 14 or 15 are formed, partially or all skip over the needle latch when the needles move from the position of FIG. 7 to the position of FIG. 8.
  • the holding loop I5 of a tuck stitch should not be placed behind the latch 24, and it is therefore necessary to place the dial needle in the tuck position in which the holding loop 15 is disposed on the open latch 2a.
  • the needle is in the position of FIG. 13 during the forward movement. Only when the holding loop and the tuck loops 15a and 15b are to be cast off over the loop 9, as: shown in FIGS. 6 and 8 the needle moves in the direction of the arrow P to the normal knit position, as shown in FIG. 7, so that the holding loop 15 and the tuck loops 15a and 15b are cast off over the closed latch and hook onto the loop 9, see FIG. 8, whereby the tuck stitch 15 is formed.
  • Loop retaining arrangement for a circular knitting machine comprising, in combination, needle cylinder means and dial means, each having a needle-supporting surface bounded by a circular edge, a set of needles mounted on each of said needle-supporting surfaces for movement in a knitting direction beyond said edge to and from an advanced position; a set of holding members secured to at least one of said needle-supporting surfaces in a position to at least one of said needle-supporting surfaces in a position alternating with the needles mounted on said one needle-supporting surface, each holding member having a holding portion projecting from the circular edge of said one needle-supporting surface, said projecting holding portion having a holding edge connecting the free end of said projecting holding portion with said circular edge, said holding edge being at least at said free end spaced from said one needle-supporting surface and from the respective adjacent needles in a direction transverse to said one needle-supporting surface whereby loops on said needles have portions engaged and retained by the holding edges of adjacent holding members and are not dragged away from said circular edges by needle
  • loop-retaining arrangement as claimed in claim I wherein said holding edge has a shoulder projecting from said circular edge of said one needle-supporting surface transverse to the same, and an edge portion extending parallel to said one needle-supporting surface from said shoulder to said free end.
  • loop-retaining arrangement as claimed in claim I wherein said one needle-supporting surface is the needlesupporting surface of said dial means; wherein said holding members alternate with dial needles; wherein said holding edge is at least in the region of said free end of each holding member located above the adjacent dial needles.
  • loop-retaining arrangement as claimed in claim 1 wherein said holding edge is straight and connects said free end of said holding portion with a point of said holding member located at said circular edge of said one needlesupporting surface so that said holding edge is slanted to said one needle-supporting surface.
  • loop-retaining arrangement as claimed in claim 1 wherein said holding edge is concave toward said adjacent needles.
  • Loop-retaining arrangement as claimed in claim 1 wherein said holding e'dge extends along a parabolic curve and is concave toward said adjacent needles; and wherein the apex of said parabolic curve is located at said circular edge of said one needle-supporting surface.
  • Loop-retaining arrangement as claimed in claim 1 wherein a set of holding members is secured to each of said needle-supporting surfaces alternating with said cylinder needles and said dial needles, respectively; and wherein each holding member of each set has a holding edge connecting the free end of said holding portion thereof with the respective circular edge whereby loops on said cylinder needles and on said dial needles are retained and not dragged along with needles moving toward said advanced position.
  • loop-retaining arrangement as claimed in claim 7 'wherein the holding members which are secured to said needle cylinder means have a holding edge slanted to the other needle-supporting surface; and wherein said holding members which are secured to said dial means have an edge portion of said holding edge located above the plane of said one needle-supporting surface in the region of said free end, and have a shoulder portion connecting said edge portion with said circular edge of said needle-supporting surface of said dial means.
  • loop-retaining arrangement as claimed in claim 1 wherein said one needle-supporting surface is the needlesupporting surface of said dial means; wherein said holding members alternate with dial needles; and wherein said holding edge has a shoulder projecting from said circular edge of said needle-supporting surface of said dial means transverse to the

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Knitting Of Fabric (AREA)
US843377A 1968-07-24 1969-07-22 Loop-retaining arrangement for a circular knitting machine Expired - Lifetime US3576115A (en)

Applications Claiming Priority (1)

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DE1760955A DE1760955C3 (de) 1968-07-24 1968-07-24 Rundränderstrickmaschine

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US3576115A true US3576115A (en) 1971-04-27

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US843377A Expired - Lifetime US3576115A (en) 1968-07-24 1969-07-22 Loop-retaining arrangement for a circular knitting machine

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US (1) US3576115A (de)
AT (1) AT307607B (de)
BE (1) BE736530A (de)
CH (1) CH491229A (de)
CS (1) CS160107B2 (de)
DE (1) DE1760955C3 (de)
ES (1) ES370676A1 (de)
FR (1) FR1600182A (de)
GB (1) GB1251282A (de)
NL (1) NL6911039A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712082A (en) * 1969-09-03 1973-01-23 A Kohorn Dial and cylinder knitting machine having self-frictioning needles
US4689971A (en) * 1984-08-01 1987-09-01 Paolo Conti Process and circular knitting machine for manufacturing pantyhose articles and the like
US6622528B2 (en) 2001-11-20 2003-09-23 Sport Maska Inc. Double knit fabric with holes therethrough and a two color laminated effect fabric
WO2003097914A2 (en) * 2002-05-17 2003-11-27 Houston Hosiery Mills, Inc. Circular knitting machine
US20060169001A1 (en) * 2003-03-28 2006-08-03 Seiji Yamahara Inner wear and high-gauge circular knitting machine, and knitting method using the high-gauge circular knitting machine
US20150315728A1 (en) * 2015-07-13 2015-11-05 Sung-Yun Yang Process of manufacturing fabrics having jacquard and terry patterns
US20170260663A1 (en) * 2014-12-09 2017-09-14 Sipra Patententwicklungs-Und Beteiligungsgesellschaft Mbh Circular knitting machine
WO2023034529A3 (en) * 2021-09-02 2023-04-13 Sheertex Inc. Ultra-high molecular weight polyethylene material reduction for weft knit garments

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102505317A (zh) * 2011-09-30 2012-06-20 洪荣豪 一种圆形针筒的耐磨结构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE234330C (de) *
US716767A (en) * 1901-03-09 1902-12-23 Louis N D Williams Rib-knitting machine.
US1506800A (en) * 1919-06-20 1924-09-02 Hemphill Co Knitting mechanism
US2276920A (en) * 1938-09-03 1942-03-17 Mellor Bromley & Co Ltd Knitted fabric and the method of making same
FR1458789A (fr) * 1965-10-29 1966-03-04 Lebocey & Cie Georges Dispositif rentreur de mèches pour métier à tricoter, ainsi que les métiers à tricoter et notamment les métiers à tricoter circulaires, à rayures horizontales, pourvus de ce dispositif rentreur ou similaire

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE234330C (de) *
DE189138C (de) *
US716767A (en) * 1901-03-09 1902-12-23 Louis N D Williams Rib-knitting machine.
US1506800A (en) * 1919-06-20 1924-09-02 Hemphill Co Knitting mechanism
US2276920A (en) * 1938-09-03 1942-03-17 Mellor Bromley & Co Ltd Knitted fabric and the method of making same
FR1458789A (fr) * 1965-10-29 1966-03-04 Lebocey & Cie Georges Dispositif rentreur de mèches pour métier à tricoter, ainsi que les métiers à tricoter et notamment les métiers à tricoter circulaires, à rayures horizontales, pourvus de ce dispositif rentreur ou similaire

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712082A (en) * 1969-09-03 1973-01-23 A Kohorn Dial and cylinder knitting machine having self-frictioning needles
US4689971A (en) * 1984-08-01 1987-09-01 Paolo Conti Process and circular knitting machine for manufacturing pantyhose articles and the like
US6622528B2 (en) 2001-11-20 2003-09-23 Sport Maska Inc. Double knit fabric with holes therethrough and a two color laminated effect fabric
WO2003097914A2 (en) * 2002-05-17 2003-11-27 Houston Hosiery Mills, Inc. Circular knitting machine
US20040261462A1 (en) * 2002-05-17 2004-12-30 Houston Darrell B. Circular knitting machine
WO2003097914A3 (en) * 2002-05-17 2005-05-12 Houston Hosiery Mills Inc Circular knitting machine
US6948342B2 (en) * 2002-05-17 2005-09-27 Houston Hoslery Mills, Inc. Circular knitting machine
US20060169001A1 (en) * 2003-03-28 2006-08-03 Seiji Yamahara Inner wear and high-gauge circular knitting machine, and knitting method using the high-gauge circular knitting machine
US7631520B2 (en) * 2003-03-28 2009-12-15 Gunze Limited Inner wear and high-gauge circular knitting machine, and knitting method using the high-gauge circular knitting machine
US20170260663A1 (en) * 2014-12-09 2017-09-14 Sipra Patententwicklungs-Und Beteiligungsgesellschaft Mbh Circular knitting machine
US20150315728A1 (en) * 2015-07-13 2015-11-05 Sung-Yun Yang Process of manufacturing fabrics having jacquard and terry patterns
WO2023034529A3 (en) * 2021-09-02 2023-04-13 Sheertex Inc. Ultra-high molecular weight polyethylene material reduction for weft knit garments

Also Published As

Publication number Publication date
NL6911039A (de) 1970-01-27
GB1251282A (de) 1971-10-27
DE1760955A1 (de) 1972-05-04
AT307607B (de) 1973-05-25
ES370676A1 (es) 1971-07-01
CH491229A (de) 1970-05-31
DE1760955C3 (de) 1974-03-21
CS160107B2 (de) 1975-02-28
FR1600182A (de) 1970-07-20
DE1760955B2 (de) 1973-08-23
BE736530A (de) 1969-12-31

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