US3242697A - Straight bar knitting machines - Google Patents

Straight bar knitting machines Download PDF

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Publication number
US3242697A
US3242697A US165575A US16557562A US3242697A US 3242697 A US3242697 A US 3242697A US 165575 A US165575 A US 165575A US 16557562 A US16557562 A US 16557562A US 3242697 A US3242697 A US 3242697A
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Prior art keywords
needles
loops
group
groups
instruments
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US165575A
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English (en)
Inventor
Harrison Michael
Hincklieff Alan Edward
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William Cotton Ltd
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William Cotton Ltd
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B11/00—Straight-bar knitting machines with fixed needles
    • D04B11/18—Straight-bar knitting machines with fixed needles for producing patterned fabrics
    • D04B11/22—Straight-bar knitting machines with fixed needles for producing patterned fabrics with stitch patterns

Definitions

  • 849,091 provides for the production of knitted fabric with cable stitch patterns by the transference at spaced course intervals of adjacent groups of loops, in inwardly opposite directions, each from its own group of needles to another group of needles in cross-over relationship, the fabric being produced on a straight bar knitting machine wherein adjacent groups of loop transfer instruments are carried by the machines narrowing head, the machine being controlled for fashioning motion operation with dips, rises and sideways displacements of the groups of instruments for association with the machines bearded needles in the transference of loops, and the groups of instruments being mounted and controlled for movement relatively to the narrowing head, in addition to the sideways displacements, in causing the loop transference by each group of instruments to be effected between the appropriate groups of needles.
  • both groups of instruments pick up groups of loops from their groups'of needles during the first dip and rise of the first fashioning motion
  • both groups of loops are sideways displaced in one direction and to such extend that during the second dip and rise of the first fashioning motion of the first group of instruments relinquishes its groups of loops to the second group of needles while the second group of instruments remains down in its group of loops, before starting the second fashioning motion the first group of instruments is rendered vertically inactive
  • the needle beards are not pressed so that for the rise after this first dip of the second fashioning motion the second group of instruments raises its loops, and both groups of instruments are again sideways displaced this time in the opposite direction and to such greater extent that the second group of instruments relinquishes its group of loops to the first group of needles during the second dip and rise in the second fashioning motion.
  • Application Ser. No. 116, 711 provides for the production of a repetitive drop stitch at each side of the cable stitch by operation of single points on the outsides of the groups of loop transfer instruments, and also for displacement of the groups of instruments into and out of operative position manually or automatically in desired manner.
  • An object of the invention is to enable the production on the machine of fabric with a triple cable stitch pattern.
  • the inveniton provides an improvement in or modification of the invention disclosed in the U8. application Ser. No. 844,091 or as modified by the US. application Ser. No. 116,711 and provides an additional group of said instruments in the narrowing head, and first a cross-over loop arrangement at one side is carried out by the employment of an intermediate group of the three groups of instruments together with one of the outer groups thereof. After a suitable course-producing interval a second crossover loop arrangement is made at the other side by again employing the intermediate group of instruments this time together with the other outer group of instruments.
  • each outer group of instruments is mounted for longitudinal and transverse displacements relatively to the other groups of instruments, operating means are provided for independently effecting said displacements, and patterning means are adapted to selectively control the operating means to determine the relative timing of the displacements.
  • the longitudinal displacements of the group of instruments are to a lower level than that of the remainder and this causes the transverse displacements by which the lowered instruments are held clear of the needles.
  • the operating means conveniently comprise independent cam operating mechanisms, and the pattern means comprises a pattern device which is adapted to control selecting means associated with said cam operating mechanisms.
  • the additional group of instruments may be slidably mounted in an additional housing, and this additional housing may be removably attached to the housing for the other two groups of instruments so that the unit can be used either for double cabling or triple cabling according to whether or not the additional instruments are fitted. Where drop stitch points are used with the double cabling unit, the additional instruments can still be fitted, one of the drop stitch points being transferred to be associated with the additional instruments.
  • FIGURES 1 and 1A illustrate diagrammatically one step in the production of a triple cable stitch, according to the invention.
  • FIGURES 2 and 2A illutsrate a further step in said production.
  • FIGURES 3 to 5 illustrate still further step in said production.
  • FIGURE 6 illustrates a completed triple cable stitch pattern.
  • FIGURE 7 is a cross sectional view of a relevant parts of a straight bar knitting machine according to the invention.
  • FIGURE 8 is a detail view of part of FIGURE 12 looking in the direction of arrow B.
  • FIGURE 9 is a detail side view of transfer instrument slide bars according to the invention.
  • FIGURE 10 is a rear view of said slide bars.
  • FIGURE 11 is a diagrammatic illustration of a repeat triple cable pattern produced according to the invention.
  • FIGURE 12 is a perspective view of the knitting machine.
  • FIGURE 13 is an enlarged perspective view of a selection device of FIGURE 12.
  • FIGURE 1 Side by side groups 1b, 1c of loop transfer instruments, FIGURE 1, are carried by slide bars 4, which are operated first for both groups 1b, 1c of instruments to lower the same, FIGURE 2, to take on them loops from corresponding needles 2b, 20.
  • the points are shifted sideways to the right, as in FIGURE 3, and then the points move down permitting points 1b to transfer their loops to the needles 2c.
  • the points 11) rise to leave their loops on the needles whereas the points remain down FIGURE 4.
  • the points 10 rise with their loops on them and all the points are shifted in the opposite direction, followed by the points 10 going down FIGURE 5 to transfer their loops onto the needles 2b.
  • a plurality of courses (such as LE in FIGURE 6) are produced without transferring loops, and in this prior arrangement the whole cycle is repeated after returning the points to the starting position.
  • single drop stitch points 47P, 48P, FIGURE 1 are operated at the outsides of the groups of points 1b, 1c i.e. in the slide bars 42, 43, to close the beards of their associated needles and cause the needles to cast on their yarn thereby forming a series of drop stitches at each side of the cable pattern.
  • a group of loop transfer instruments 10! which, in this example of a right hand unit, is to the left (looking from the front of the machine) of groups 1b and 1c and is carried by an additional outer slide bar 156.
  • the drop stitch slide bar 47 is associated in like manner with the outer slide bar 156 so that the drop stitch point 471 is associated with the outer instrument 1d instead of with the instruments 1b.
  • a crossover loop arrangement is carried out as described for said prior arrangement including an operation as described for said modification during which the drop stitch point 481, and of the drop stitch point 471 in its new position, form drop stitches at the outer sides of the three groups of needles 2f, 2b, 20, so that the drop stitches are at positions wider apart than in the prior arrangement.
  • the instruments 1d are rendered ineffective by being displaced downwardly relative to the other instruments 1b, 10, from an upper position, FIGURES l and 1A in which recesses 158 in the slide bar 156 are out of registry 'with relatively stationary projections 157 so that the instruments co-operate with the needles 2 to a lowered position FIGURES 2 and 2A whereat the recesses 153 are in register with the projectcions 157 whereby the instruments do not co-operate with the needles.
  • loops Lb are transferred to the left onto needles 2f and loops Ld are transferred to the right onto needles 2b as shown at the top of the fabric view FIGURE 6.
  • drop stitches Ds, Dsl continue to be formed by the drop stitch points 47p, 48p as in said modified arrangement.
  • FIGURES 7 and 12 is secured on a pair of bars 38, 39 for opposite sideways displacements by cam followers 702: FIGURE 12 and 71a following cams 64 to 67, these cams being stepwise shifted by pawl and ratchet means 72, 73, a lever 74 and a link connection 75 to cam follower 76 following cams 77 on the main cam shaft 5.
  • the slide bar 43 has a horizontal hook 43w FIGURES 7 and 12 for obtaining its raising and lowering movements by a rod 45 through supporting arms 57, 58, a mounting rod therefore 59 and arm 60 secured to the rod 59 and a link connection 61 to cam follower means 62 following cams 63 on the main shaft 5.
  • the slide bar 43 also has a vertical hook 431) FIG- URES 7, 9 and 12 for d-isplaceable engagement over a rod 46 for further control through arms 49, 50, a mounting rod 51 therefor and an arm connection 51a, FIG- URE 12 to link connections 52, 53 to a cam follower 54 following cams 56.
  • the slide bar 43 has a drop stitch slide bar 48, FIG- URE 10 slidably mounted in it and carrying the drop stitch point 48F.
  • the drop stitch point slide bar 48 has a horizontal hook 48a engaging the rod 46 for operating the drop stitch point 48F.
  • the transfer unit 40 is capable of being rendered inoperative by operation of a cam 82 on a shaft 83 which is rotated when required through pawl and ratchet means '84 and a link connection 86 to cam follower means 87 following cams 88.
  • the cable box 40 is widened by an additional part 3x fastened to it by screws 3y to accommodate the additional slide bar 156 (note bar 156 is at the right in FIGURE 10 because this is a rear view), the short slide bar 42 being intermediate bar 156 and bar 43, not having an associated drop stitch point although having a groove 42: for a drop stitch point.
  • the additional slide bar 156 is similar to the slide bar 43 and has a horizontal hook 15Gb (FIGURE 9) and a vertical hook 156a, and it further embodies the drop stitch slide bar 47 having the drop stitch point 47?.
  • the slide bar 42 is spring biased downwardly by spring 159 as limited by a stop 160 bearing on top of the cable box 40 to assist in the slide bar 42 being controlled by the slide bar 43, the manner of this control being disclosed in said application Ser. No. 1 16,711. 4
  • the cable box 40 is provided with the aforesaid projection plates 157 for co-operation'with the recesses 158 in the outer slide bars 43 and 156.
  • an additional operating rod 162 FIGURES 7 and 12 is provided, rod 162 being connected by arms 163, 16 3a to a rod 164 with which the horizontal hook 156b of the additional slide bar 156 engages and which is also connected by an arm 165 to a link 166.
  • the vertical hook 1560 of slide bar 156 functions in like manner to its counterpart 43b, being displaceably engageable over rod 46 by which the slide bars 43, 156 are raised to inoperative height when fashioning the fabric.
  • slide bar 43 when making the first cross-over arrangement, slide bar 43 is required to be operative and the slide bar 156 is required to be lowered to be ineffective and when making the second cross-over arrangement the slide bar 156 is required to be operative and the slide bar 43 is required to be lowered to be ineffective.
  • variable frame shaped control devices 168, 169 connected to said links 61, 166 respectively and each mounts a cup bearing block 170, 170a and 171, 171a, which blocks are spaced transversely to the frame shaped devices, and are adjustably mounted in longitudinally offset relationship so that their cup shaped ends are contained in a plane substantially parallel to a plane containing two pegs 172, 173 which are spaced transversely to the frameshaped devices a lesser distance than the blocks.
  • Pegs 172, 173 are inwardly directed from a pair of arms 174a, 175a of hell crank arms 174, 175 the other arms 174b, 1751) are connected to cam operated mechanisms respectively.
  • the arm 17412 is connected to the aforesaid cam follower means 62 and the arm 1751) is connected to cam follower means 176a following cams 176, FIGURE 12, on the main shaft 5.
  • Each peg 172, 173, FIGURE 13 is capable of operating the links 161, 166 through either frame-shaped devices 168, 169 according to the positions of the cup bearings 170, 170a, 171, 171a.
  • pattern means comprising a pattern disc 177, FIGURE 12, having pattern bits such as 178, 179 of different heights and operable on noses such as 180a of separate pawls 180, 181 (see also FIGURE 8).
  • the two pawls 180, 181 are mounted on a rod 182 and are connected by universal joints 183a, 184a to links 183, 184, the latter links being also connected by universal joints 185a, 186a to rocker arms 185, 186 which have fork-and-collar connections 185b, 1861) to control rods 187, 188 respectively.
  • control rods 187, 188 also have fork-and-collar connections 189, 190a with rocker arms 189, 190' which in turn are connected by universal joints 189b, 19Gb to links 191, 192 respectively, and these links 191, 192 are connected to control arms 193, 194, FIGURE 13, respectively engaged with the frame shaped devices 168, 169.
  • the bell cranks 175, 175a operate selectively on the frame shaped devices 168, 169 (through cam followers 62, 1761)) according to which of the bearing blocks 170, 170a, 171, 171a of either of the frame shaped devices 168, 169 is presented to the bell cranks pegs 172, 173 and the frame shaped devices are selectively displaced as thus required by the control arms 193, 194 from the pattern disc 177 through the control rods 187, 188 and the links 191, 192.
  • a low pattern bit 178 on the pattern disc 177 moves rocker arm 181 to rock arm 185 which pushes rod 187 to rock lever 189 and, through link 191, to operate arm 193, whereby the frame shaped device 168 is lowered a short distance, while pegs 172, 173 are clear of cup bearings 170-171a, thereby registering the short cup bearing 171 of the frame shaped device 168 with the peg 172 of arm 174, but not sulficiently low for peg 173 of lever 175 to register with the long cup bearing 170, so that operation of the slide bar 43 through link 61 by cam 63 is with the slide bar 43 in its normal operative position relative to the slide bar 156.
  • Pattern disc 177 is stepwise turned by conventional ratchet means to present the different arrangements of pattern bits to the rocker arms 180, 181 in turn.
  • the cable box 40 is readily adaptable for use for alternatively making double cable stitches, if required, it being only necessary to remove the additional block part 3x, by removing the screws 3y, also removing the additional slide bar 156, and fitting the drop stitch point bar 47 into the slot 4x of the slide bar 42.
  • a now of needles having beards in combination, a now of needles having beards; means for raising and lowering said needles; transfer means for picking up loops from needles of two selected groups of needles and for depositing loops picked up from each group of needles on the needles of the other group so that the groups of loops ⁇ cross over; means for knitting a plurality of courses of plain knitted fabric; said transfer means including means cooperating with a third group of said needles to pick up together with loops from the needles of one of said groups, loops from needles of said third group of needles and for depositing the picked up loops of these two groups of needles on the needles of the other group so that these loops cross over, forming a three strand cable stitch pattern.
  • a machine as claimed in claim 1 having predetermined needles without loops located at the ends of said groups of needles; means for feeding yarn to said needles; and drop stitch means for closing the beards of said predetermined needles so that drop stitches are formed on the sides of said three strand cable stitch pattern.
  • a row of needles having beards; means for raising and lowering said needles; transfer means for picking up loops from needles of two selected groups of needles and for depositing picked up loops from each group of needles on the needles of the other group, so that the groups of loops cross over; means for knitting a plurality of courses of plain knitted fabric; said transfer means including a transfer finger having transfer points cooperating with a third group of said needles, and means for operating said transfer fin ger so that said transfer points pick up together with loops from the needles of one of said groups, loops from the needles of said third group of needles and deposit picked up loops of these two groups of needles on the needles of the other group thereof so that these loops cross over, forming a three strand cable stitch pattern.
  • a row of needles means for raising and lowering said needles, a transfer unit, means for raising and lowering said transfer unit, means for sideways displacing said transfer unit, central and first and second opposite side transfer fingers slida-bly mounted in said transfer unit,
  • a row of needles means for raising and lowering said needles, a transfer unit, means for raising and lowering said transfer unit, means for sideways displacing said transfer unit, central and first and second opposite side transfer fingers slidably mounted in said transfer unit, a first operating means for raising and lowering one of said side transfer fingers and including a selection device and pattern means controlling said selection device, and a second operating means for raising and lowering the other side transfer finger including a second selection device and a second pattern means controlling said second selection device.
  • a row of needles means for raising and lowering said needles, a transfer unit, means for sideways displacing said transfer unit, central and first and second opposite side transfer fingers, each having a group of transfer points slidably mounted in said transfer unit, first and second cam operating means, first and second selection devices operatively connected between said first and second carnoperating means and said first and second opposite side transfer fingers, a first pattern means operable to actuate said second selection device so that said first and second transfer fingers are operable by either of said first and second cam operating means according to pattern requirements.
  • each selector device has differently disposed adjusted abutments
  • each of said first and second cam operating means includes a peg for engagement with any of said abutments according to diiferent positions in which the abutments are disposed by the pattern operation of the selection devices.
  • a row of needles means for raising and lowering said needles, a transfer unit, means for sideways displacing said transfer unit, central and first and second opposite side transfer fingers slidably mounted in said transfer unit and each having a group of transfer points, a first operating means comprising a first selection device operably connected with said first side transfer finger, a first pattern means controlling said first selection device, and a first cam operating device operable to actuate said central and firstside transfer fingers to pick up loops from needles of the central group and one side group of needles and to deposit the picked up loops on the needles of the other group, means for knitting a plurality of plain knitted courses, and a second operating means comprising on a second selection device operably connected with the second side transfer finger, a second pattern means controlling said second selection device, and a second cam operating device operable to actuate said central and the second side transfer fingers to pick up loops from needles of said central group and from a second opposite side groups of needles

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Knitting Of Fabric (AREA)
US165575A 1961-01-11 1962-01-11 Straight bar knitting machines Expired - Lifetime US3242697A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1122/61A GB1015131A (en) 1961-01-11 1961-01-11 Improvements in or relating to straight bar knitting machines

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US3242697A true US3242697A (en) 1966-03-29

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US165575A Expired - Lifetime US3242697A (en) 1961-01-11 1962-01-11 Straight bar knitting machines

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US (1) US3242697A (enrdf_load_stackoverflow)
DE (1) DE1560964B1 (enrdf_load_stackoverflow)
FR (1) FR1310256A (enrdf_load_stackoverflow)
GB (1) GB1015131A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3431752A (en) * 1966-08-12 1969-03-11 Colebrook Mills Inc Cable knitting method and apparatus
US3503227A (en) * 1967-05-17 1970-03-31 Cotton Ltd W Straight bar knitting machines
US3581526A (en) * 1966-05-23 1971-06-01 North American Rockwell Means for and method of forming design stitch patterns on knitting machines

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2295794A (en) * 1941-06-07 1942-09-15 Kaufman Charles August Method of knitting run-resistant fabric
US2313294A (en) * 1938-05-11 1943-03-09 Garric Jean Manufacture of stockings
US2716877A (en) * 1951-09-20 1955-09-06 Hosemaster Machine Company Ltd Method of knitting fabric
US2923142A (en) * 1956-02-07 1960-02-02 Walter M Golaski Knitting machine
FR1239166A (fr) * 1958-10-28 1960-08-19 Cotton Ltd W Perfectionnements aux métiers à tricoter rectilignes
US3004415A (en) * 1960-04-01 1961-10-17 Walter M Golaski Cable stitch attachment for knitting machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE322589C (de) * 1916-08-26 1920-07-03 Paul Thierfelder Verfahren zur Herstellung gemusterter, durchbrochener Wirkware
DE1287725B (enrdf_load_stackoverflow) * 1960-06-14 1969-01-23

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2313294A (en) * 1938-05-11 1943-03-09 Garric Jean Manufacture of stockings
US2295794A (en) * 1941-06-07 1942-09-15 Kaufman Charles August Method of knitting run-resistant fabric
US2716877A (en) * 1951-09-20 1955-09-06 Hosemaster Machine Company Ltd Method of knitting fabric
US2923142A (en) * 1956-02-07 1960-02-02 Walter M Golaski Knitting machine
FR1239166A (fr) * 1958-10-28 1960-08-19 Cotton Ltd W Perfectionnements aux métiers à tricoter rectilignes
US3004415A (en) * 1960-04-01 1961-10-17 Walter M Golaski Cable stitch attachment for knitting machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3581526A (en) * 1966-05-23 1971-06-01 North American Rockwell Means for and method of forming design stitch patterns on knitting machines
US3431752A (en) * 1966-08-12 1969-03-11 Colebrook Mills Inc Cable knitting method and apparatus
US3503227A (en) * 1967-05-17 1970-03-31 Cotton Ltd W Straight bar knitting machines

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GB1015131A (en) 1965-12-31
DE1560964B1 (de) 1970-05-14
FR1310256A (enrdf_load_stackoverflow) 1963-03-06

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