US3209557A - Circular knitting machine - Google Patents

Circular knitting machine Download PDF

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Publication number
US3209557A
US3209557A US187395A US18739562A US3209557A US 3209557 A US3209557 A US 3209557A US 187395 A US187395 A US 187395A US 18739562 A US18739562 A US 18739562A US 3209557 A US3209557 A US 3209557A
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United States
Prior art keywords
cam
sinkers
working elements
needles
insertable
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Expired - Lifetime
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US187395A
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English (en)
Inventor
Lagerweij Arnoldus Gerardus
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EUROSTOCK ANSTALT
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EUROSTOCK ANSTALT
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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
    • D04B9/26—Circular knitting machines with independently-movable needles for producing patterned fabrics
    • D04B9/38—Circular knitting machines with independently-movable needles for producing patterned fabrics with stitch patterns
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/06—Non-run fabrics or articles
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/22—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration
    • D04B1/24—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration wearing apparel
    • D04B1/26—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration wearing apparel stockings
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/18—Circular knitting machines with independently-movable needles with provision for splicing by incorporating reinforcing threads

Definitions

  • the invention relates to a circular knitting machine with a rotary needle cylinder, which is fitted with latch needles and with sinkers placed between the needles, said machine being further equipped with slots and/ or cams for moving the needles and the sinkers, with a selector device for selectively bringing the needles in a higher or a lower position before the stitch cam, and with adjusting means for adjusting during a particular revolution of the cylinder the distance between the line joining the Points of support of the yarn on two adjacent sinkers and the head of the needle between them in the lowermost point of the needle movement to a higher value than during other revolutions.
  • the object of the invention is to eliminate the undesirable operation as outlined above in a manner hereafter set forth. This object is achieved, in accordance with the present invention, by-avoiding deviations in the movement of the previously mentioned needles and/ or sinkers during critical periods of the operative cycle.
  • the said means consist of two cams, which can be brought into the slot of the sinker cam or of the stitch cam and each of which acts on the sinkers'or the needles respectively of a part of the cylindrical surface of the needle cylinder, while each of said cams can be displaced during the inoperative period.
  • the said means consist of a cam which can be brought into the slot of the sinker cam or of the stitch cam during slightly more than one full revolution of the needle cylinder and can also be displaced in the direction transverse to its main plane of movement so that in the overlapping parts of the revolution it will take up two adjacent positions, in which it alternately does and does not engage the corresponding sinkers or needles respectively.
  • the needles and/or the sinkers are equipped with an additional butt, while cams are present which are able to cooperate with the additional butt of the needles and/or the sinkers, the cams being adapted to be moved into and out of their operative position during a part of the revolution of the needle cylinder when no additional butt is facing the cam in question.
  • FIG. 1 shows a longitudinal cross-section of a part of a knitting machine according to the invention.
  • FIGS. 2, 3 and 4 show three types of sinker for the machine acocrding to FIG. 1.
  • FIG. 5 shows a bottom view of the sinker cap of the machine according to FIG. 1.
  • FIG. 6 shows a detail of a modified embodiment of the machine according to FIG. 1.
  • FIG. 7 shows a top view of another embodiment of a knitting machine according to the invention.
  • FIG. 8 shows a longitudinal cross-section of the knitting machine according to FIG. 7.
  • FIG. 9 shows a detail of a modified embodiment of a knitting machine according to FIGS. 7 and 8.
  • FIG. 10 shows a part of a third embodiment of a knitting machine according to the invention.
  • FIG. 11 shows a detail of a fourth embodiment of a knitting machine according to the invention.
  • FIGS. 12 and 13 show details of the arrangement and orientation of a cam surface.
  • the circular knitting machine according to FIGS. 1 to 5 comprises a base plate 1, on which is mounted a revolving cylinder 2, the entire cylindrical surface of which is provided with longitudinal slots, in each of which lies a needle 3.
  • a jack 4 Directly below each needle 3 is a jack 4, by means of which the needle can be set at a desired level with the aid of a device 5 before the needle reaches the stitch cam.
  • the sinker 10 Fastened to the top of the needle cylinder 2 are the inner sinker ring 6 and the outer sinker ring 7. In slots of the sinker rings 6 and '7, and between every two needles 3, a sinker 8, 9, 10 or 11 is present.
  • the sinker 10 has a straight underside and a high butt (FIG. 3).
  • the sinkers 10 are distributed alternately with one of the other three types of sinkers over the entire circumference of the sinker rings 6 and 7. Sinkers 8, 9, and 11 are found only in given sectors of the circumference.
  • the sinkers 8 are found over the sector A (FIG. 5), the sinkers 9 are found over the sector B (FIG. 5), and the sinkers 11 are found over the remaining sector of the circumference.
  • the total number of sinkers is 400, there are thus 200 sinkers 10, about 50 sinkers 8, about 50 sinkers 9, and about sinkers 11.
  • the underside of the sinkers 8, 9 and 11 is partly lowered, and the corresponding slots of the outer sinker ring 7 are made correspondingly deeper.
  • a recess 12 is present, and in the lowered underside of the sinker 9 a recess 13 is present.
  • Fitted over the sinkers is a stationary sinker cap 14, the latter comprising a circular groove 15, through which the sinkers are adapted to move. Above the stitch cam the groove 15 bends outwards and then inwards again, so that the sinkers perform an outward and subsequently an inward movement above the stitch cam.
  • the sinker cap has been provided with a lip 16, which is adapted to pivot about a pin 17 and can be pushed in by a rod 18 until it reaches a position in which it projects into the groove 15, and can be retracted to a position in which it lies outside the groove 15.
  • the lip 16 is adapted to move slightly in the vertical direction on the pin 17 and is kept in the lowermost position by a spring 19.
  • a downwardly directed leaf spring 20 Fitted to the underside of the lip 16 is a downwardly directed leaf spring 20, which has its greatest dimension in the circumferential direction and thus springs in the radial direction.
  • the underside of the leaf spring 20 cooperates with a cam surface 21, which is provided on a part of the circumference of the outer sinker ring 7, and of which the upper side is inclined upwards over the part C (FIG. 5) and is horizontal over the part D (FIG. 5).
  • the cam surface 21, by engaging leaf spring 20, is adapted to lift the lip 16 from the lowermost position, shown in full lines in FIG. 1, to the uppermost position, shown in dotted lines in FIG. 1.
  • the mechanism for pushing in the rod 18 is inoperative, all the sinkers after the outward movement are forced inwards again by the edge 22 of the groove 15 (see FIG. 5).
  • the mechanism for operating the rod 18 is adjusted in such a way that the rod 18 pushes the lip 16 inwards at a moment when the sinkers 8 move past, i.e. over the sector A of the sinker ring.
  • the lip 16 then enters the recess 12 of the sinkers 8, and as long as sinkers 8 alone (alternately with sinkers 10) move past, the movement of the sinkers is still determined by the edge 22 of the groove 15.
  • the leaf spring abuts against the side of the cam surface 21 and turns aside, so that the movement of the lip 16 is not stopped.
  • the sinkers 9 When the first sinker 9 reaches the lip 16, i.e. as soon as the sector B reaches the lip 16, the sinkers 9 are forced inwards by the lip 16 sooner than normal, through which it is ensured that the yarn comes to rest on the head 24 of the sinker 9 instead of the normal supporting surface 23.
  • the sinkers 10, which alternate with the sinkers 9, have a straight underside, so that they are not acted upon by the lip 16 and the yarn comes to rest normally on the supporting surface 23 on these sinkers.
  • the sinkers 10 alternate with sinkers 11, which have no recess in the outer side, so that the sinkers 11 are also forced inwards by the lip 16.
  • the upwardly inclined part C of the cam surface 21 begins, the leaf spring 20 moves up against this part C, and the lip 16 is lifted into the highest position without its action on the sinkers 11 being affected.
  • the first sinker 8 i.e. the sector A
  • the latter has been given its highest A ⁇ position, and it is kept in this position by the part D of the cam surface 21.
  • the highest position of the lip 16 the latter engages a portion of the sinkers 8 above the recess 12 thereof, and the sinkers 8 therefore also forced inwards prematurely by the lip 16.
  • the lip 16 When the last sinker 8 has moved past, the lip 16 is still in the highest position and the first sinker 9 (of the sector B) which approaches the lip 16 falls with the recess 13 over the lip 16, so that the rear of the sinker 9 is forced inwards again by the edge 22 of the groove 15 instead of by the lip 16.
  • the action of the lip 16 therefore also ends instantaneously and completely, so that also at the end of the operation no faulty knitting takes place.
  • the lip 16 is pulled out by the rod 18 before the cam surface 21 ends and before the sector B ends.
  • FIG. 6 it is possible to provide two lips and 161 one above the other instead of one movable lip 16, so that the cam surface 21 becomes superfiuous, but in this case a separate control rod has to be provided for each of the lips 160 and 161.
  • the lip 161 then has to move inwards over a sector corresponding with the sector over which the lip 16 is in the lowermost position, while the lip 160 has to move inwards over a sector corresponding with the sector over which the lip 16 is in the uppermost position.
  • the lips 160 and 161 may be slidably fitted in a block 162 mounted on the sinker cap 14.
  • the cam 39 is kept in the outermost position by a spring 40, and the rod 41 to which the cam 39 is fastened is controlled in such a way that the cam 39 can take up two positions, viz. a position in which it lies inside the recess 38 and a position in which it projects a few millimetres beneath the stitch cam 37, while in the projecting position of the cam 39, the latter can moreover be displaced inwards by the rod 41 against the action of the spring 40.
  • a recess 42 has been made at the top of the longest needle butts of the sector following the butts 34 in the circumferential direction.
  • Cam 39 enters recess 42 when rod 41 is biased inward. In the outermost position of the cam 39 the latter is outside the range of the butts 34, but engages the butts 35 and 36.
  • the cam 39 lies retracted into the recess 38 of the stitch cam 37 and is kept in the outermost position by the spring 40.
  • the rod 41 is turned so as to move the cam 39 out of the recess, at a moment when the needles with the short butts 34 move past.
  • the cam 39 is outside the range of the short butts 34, so that the normal movement of the needles 33 continues as long as the butts 34 move past the stitch cam.
  • the first needle with a long butt 35 reaches the underside of the stitch cam 37, it is engaged by the cam 39 and forced to move downwards further than normal. This applies also to the butts 36 and to the second set of butts 35. As the second set of butts 35 moves past, the rod 41 is forced in by the control mechanism, so that now also the butts 34 are engaged by the cam 39 and also the needles with the short butts 34 move downwards a few millimeters further than normal.
  • two cams 391 and 392 are present, which have been mounted on the control shaft 411 and on the coaxial control shaft 412 respectively.
  • the shafts 411 and 412 are hollow and are able to'perform a rotary movement under the influence of a control mechanism. However, they cannot be displaced in the radial direction.
  • the cams 391 and 392 are controlled in such a way that the cam 392 is put into operation first, as the needle butts 34 move past, that the cam 391 is also put into operation as the needle butts 35 move past, that the cam 392 is disengaged first, again as the needle butts 34 move past, and that the cam 391 is disengaged last, as the recesses 42 of the first group of needle butts 35 move past.
  • the variant according to FIG. 9 requires a double control system, just as the variant according to FIGURE 6.
  • These variants have the advantage that they are suitable not only for knitting patterns in which switching is performed after every revolution, but can also be used if switching after every two or more revolutions adjustment is necessary.
  • FIG. shows an embodiment in which the needles 53 have an extension 54 with an additional butt 55.
  • the normal butts 56 of the needles move through a normal stitch cam 57
  • the landing cam 58 in this embodiment has been modified in such a way that the needle butts 56 have room to move downwards slightly further than normal.
  • the cam 58 may be narrowed according to the dotted line 59, but it is also possible for instance, to fit the cam 58 resiliently or to give it enforced motion.
  • the additional needle butts 55 of the needles 53 are present over a part of the cylindrical surface of the needle cylinder 52 at such a level that they are able to cooperate with a cam 60, while over the remaining part of the cylindrical surface of the needle cylinder 52 the additional butts lie at a different level and are able to cooperate with a cam 61.
  • the cams 60 and 61 are slidably fitted in a setting device 62, and in the case of plain knitting they are outside the range of the additional butts 55, but when the needles 53 have to be moved downwards further than normal, one of the cams 60 or 61 is first brought in the working position, at a moment when none of the additional needle butts 55 moves past the corresponding cam.
  • a circular knitting machine comprising a rotary cylinder about which are distributed two sets of Working elements in alternating relation, said working elements comprising a set of latch needles each reciprocatable in a longitudinal slot in the outer circumference of said cylinder and a set of sinkers each reciprocatable in a radial slot in the upper end of said cylinder, each of said sinkers having a butt extending in a sinker cam track for radially reciprocating the sinkers, each of said needles having a butt extending in a needle cam track for longitudinally reciprocating the needles, and means insertable into the path of one set of said working elements for modifying the cam track for reciprocating said elements, said insertable means comprising at least one cam insertable into the path of said one set of working elements during slightly more than one full revolution of the rotary cylinder and also displaceable in a direction transverse to its main plane of movement between an inserting position and a withdrawal position overlapping each other, one circumferential group of said one set of working elements only contacting said cam when in withdrawal position,
  • said insertable means comprising two cams each operating on a different group of said one set of working elements and each alternately insertable into and retractable from the path of the elements of the respective group when said group is in another part of the circumference of the rotary cylinder than said cam track.
  • a circular knitting machine comprising a rotary cylinder about which are distributed two sets of working elements in alternating relation, said working elements comprising a set of needles each reciprocatable in a longitudinal slot in the outer circumference of said cylinder and a set of sinkers each reciprocatable in a radial slot in the upper end of said cylinder, each of said sinkers having a butt cooperating with a sinker cam track for radially reciprocating the sinkers, each of said needles having a butt cooperating with a needle cam track for longitudinally reciprocating the needles, and at least one cam insertable into the path of one set of said working elements for modifying the cam track for reciprocating said elements, said cam being also displaceable in a direction transverse to its main plane of movement, between an inserting position and a withdrawing position, said one set of working elements being divided into three successive circumferential groups having a mutually different location of their portion contacting said cam so that the first circumferential group of said elements only contacts said cam when in Withdrawing position, the second group of
  • a circular knitting machine comprising a rotary cylinder about which are distributed two sets of working elements in alternating relation, said Working elements comprising a set of needles each reciprocatable in a longitudinal slot in the outer circumference of said cylinder and a set of sinkers each reciprocatable in a radial slot in the upper end of said cylinder, each of said sinkers having a butt cooperating with a sinker cam track for radially reciprocating the sinkers, each of said needles having a butt cooperating with a needle cam track for longitudinally reciprocating the needles and two cams each insertable into the path of one set of said working elements for modifying the cam track for reciprocating said one set of elements, said one set of working elements comprising two successive circumferential groups having a mutually diiferent location of their cam contacting portion, so that the first circumferential group of said elements only contacts said first cam and the second circumferential group of said elements only contacts said second cam, and means for inserting said second cam when said first group of elements is passing by, maintaining said second cam
  • said one set of working elements comprises a third circumferential group situated between said second and said first groups, said third group contacting both the first cam and the seond cam in their inserted position, and means for maintaining both the first and the second cam inserted when said third group is passing by.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Socks And Pantyhose (AREA)
  • Knitting Of Fabric (AREA)
US187395A 1961-10-12 1962-04-13 Circular knitting machine Expired - Lifetime US3209557A (en)

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NL270187 1961-10-12

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US3209557A true US3209557A (en) 1965-10-05

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US187395A Expired - Lifetime US3209557A (en) 1961-10-12 1962-04-13 Circular knitting machine

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US (1) US3209557A (es)
AT (1) AT261787B (es)
BE (1) BE617431A (es)
CH (1) CH370516A (es)
DE (2) DE1228366B (es)
ES (4) ES286823A1 (es)
FR (1) FR1310830A (es)
GB (1) GB1013784A (es)
LU (1) LU41166A1 (es)
NL (1) NL270187A (es)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3362196A (en) * 1964-12-11 1968-01-09 Nittex A G Circular knitting machine for the manufacture of ladies' stockings
US4020653A (en) * 1976-02-10 1977-05-03 The Singer Company Sinker top circular knitting machine for producing loop fabric
US5279133A (en) * 1991-09-07 1994-01-18 Sipra Patententwicklungs-Und Beteiligungsgesellschaft Mbh Circular knitting machine for making plush fabric

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1035253A (en) * 1962-04-10 1966-07-06 Max Nebel Circular knitting machines and methods of producing knitted fabrics on such machines
US3307377A (en) * 1964-06-29 1967-03-07 Walter H Imboden Sinker operating means and method for circular knitting machines
US10669655B2 (en) 2017-02-07 2020-06-02 Sr Homedics, Llc Seamless knit enclosure for headphones

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1831129A (en) * 1930-03-24 1931-11-10 Claude Vernon Hines Knitting machine attachment
US2075077A (en) * 1934-07-03 1937-03-30 Brinton Company H Knitting machine
US2208307A (en) * 1934-07-10 1940-07-16 Hemphill Co Adjustable cam mount for knitting machines
US2421816A (en) * 1944-06-02 1947-06-10 Interwoven Stocking Co Method and machine for making seamless hosiery
US2981085A (en) * 1957-04-23 1961-04-25 Singer Fidelity Inc Loose course attachment for knitting machines
US3007325A (en) * 1958-08-15 1961-11-07 Morpul Inc Stitch regulator
US3052109A (en) * 1959-07-31 1962-09-04 Schubert & Salzer Maschinen Cam system for controlling transfer bits

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE468513A (es) * 1945-10-16
DE896252C (de) * 1951-11-13 1953-11-09 Max Nebel Doppelflaechige, maschensichere Strick- oder Wirkware sowie Verfahren und Strickmaschine zu ihrer Herstellung
DE1083971B (de) * 1954-12-04 1960-06-23 Max Nebel Verfahren zur Herstellung von maschensicherer Strumpfware auf Rundstrickmaschinen
DE1101681B (de) * 1955-02-25 1961-03-09 Max Nebel Rundgestrickter Strumpf sowie Verfahren und Rundstrickmaschine zu seiner Herstellung
DE1828478U (de) * 1960-06-13 1961-03-23 Max Nebel Rundgestricker damenstrumpf.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1831129A (en) * 1930-03-24 1931-11-10 Claude Vernon Hines Knitting machine attachment
US2075077A (en) * 1934-07-03 1937-03-30 Brinton Company H Knitting machine
US2208307A (en) * 1934-07-10 1940-07-16 Hemphill Co Adjustable cam mount for knitting machines
US2421816A (en) * 1944-06-02 1947-06-10 Interwoven Stocking Co Method and machine for making seamless hosiery
US2981085A (en) * 1957-04-23 1961-04-25 Singer Fidelity Inc Loose course attachment for knitting machines
US3007325A (en) * 1958-08-15 1961-11-07 Morpul Inc Stitch regulator
US3052109A (en) * 1959-07-31 1962-09-04 Schubert & Salzer Maschinen Cam system for controlling transfer bits

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3362196A (en) * 1964-12-11 1968-01-09 Nittex A G Circular knitting machine for the manufacture of ladies' stockings
US4020653A (en) * 1976-02-10 1977-05-03 The Singer Company Sinker top circular knitting machine for producing loop fabric
US5279133A (en) * 1991-09-07 1994-01-18 Sipra Patententwicklungs-Und Beteiligungsgesellschaft Mbh Circular knitting machine for making plush fabric

Also Published As

Publication number Publication date
FR1310830A (fr) 1962-11-30
ES274959A1 (es) 1962-05-01
LU41166A1 (es) 1963-07-29
CH370516A (de) 1963-07-15
GB1013784A (en) 1965-12-22
DE1228366B (de) 1966-11-10
DE1850107U (de) 1962-04-19
ES286823A1 (es) 1963-08-01
NL270187A (es) 1900-01-01
AT261787B (de) 1968-05-10
ES274958A1 (es) 1962-05-01
BE617431A (nl) 1962-08-31
ES90765U (es) 1962-04-01

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