US3875765A - Knitting machine apparatus for reclosing unintentionally opened latch needle hooks - Google Patents

Knitting machine apparatus for reclosing unintentionally opened latch needle hooks Download PDF

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Publication number
US3875765A
US3875765A US260280A US26028072A US3875765A US 3875765 A US3875765 A US 3875765A US 260280 A US260280 A US 260280A US 26028072 A US26028072 A US 26028072A US 3875765 A US3875765 A US 3875765A
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US
United States
Prior art keywords
needles
needle
forming rolls
hooks
hook
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US260280A
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English (en)
Inventor
Gaston G Fornes
John Woodhead
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institute of Textile Technology
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Institute of Textile Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Institute of Textile Technology filed Critical Institute of Textile Technology
Priority to US260280A priority Critical patent/US3875765A/en
Priority to CH616273A priority patent/CH578072A5/xx
Priority to GB2003473A priority patent/GB1437374A/en
Priority to DE2325815A priority patent/DE2325815B2/de
Application granted granted Critical
Publication of US3875765A publication Critical patent/US3875765A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/10—Indicating, warning, or safety devices, e.g. stop motions

Definitions

  • a circular sinker top knitting machine wherein the needles thereof have their hook-ends passing between a pair of reforming rolls, such rolls being arranged perpendicular to and tangent to the circular path of the needles.
  • Such rolls are preset with their surfaces spaced apart to correspond to the proper hook width of the knitting needles and, therefore, cause each needle in the machine to have its hook reformed to the proper gauge width as frequently as once per revolution of the machine cylinder.
  • the reforming rolls can also be used in non-circular knitting machines to avoid continuing the use of needles with unintentionally opened hooks.
  • FIG. I is a view principally in vertical section through the cylinder and top ofa circular knitting machine having the open hook correcting arrangement of the invention, and with parts shown in elevation;
  • FIG. 2 is a sectional view taken on line 2-2 of FIG. I in the direction of the arrows:
  • FIG. 3 is a fragmentary plan view of the right-hand portion of FIG. I with a part partially cut away for clarity;
  • FIG. 4 is a vertical sectional view taken essentially on line 44 of FIG. I in the direction of the arrows, and
  • FIG. 5 is a fragmentary elevational view showing a modification.
  • the needle cylinder II is supported for rotation relative to the machine frame I2 and relative to section blocks 13 which are fixed to the frame and sustain needle raising cams I4 and stitch cams 15 which operate upon the butts I6 of the needles 1? so as to reciprocate these latch knitting needles 17 each having a hook I8 and arranged to slide vertically in conventional needle slots 19 in the needle cylinder ll.
  • Needle cylinder 11 in which the vertical needle slots I9 are equally spaced has, secured around the internal periphery thereof, a sinker rest ring 20 formed with a flat planar sinker supporting surface 21 upon which the under surfaces of the forepart of the sinkers 22 bear.
  • Sinker rest ring 20 is formed with a depending annular flange 23 adapted to locate the sinker rest ring concen trically atop the needle cylinder 11.
  • a stationary carrier ring 24 Fixed to the machine frame 12 surrounding the rotat able needle cylinder 11 is a stationary carrier ring 24 to which is secured a sinker cam ring 25.
  • Beneath sinker cam ring 25 is a slotted sinker rest ring 26 which supports the shanks 26a of sinkers 22.
  • the slots of the sinker rest ring 26 divide, more or less evenly, the distance between needle slots 19 of the needle cylinder II in order to allow proper intermeshing, without touching of all needles and sinkers.
  • the butts of sinkers 22 are embraced between a cam shoulder 27 formed on the sinker cam ring 25, and sinker cam members 28, whereby as the sinkers are rotated with the sinker rest ring 26, the sinker earns 28 cause the sinkers 22 to reciprocate radially between the intervals between the upper portions of needles 17 relative to needle cylinder 11 and sinker rest ring 20.
  • Two forming rolls 30 and 31 having smooth cylindrical surfaces somewhat wider or thicker than the depth of hooks 18 are supported essentially in the same plane and on parallel supporting shafts 30a and 31a. Rolls 30 and 31 are supported at an appropriate distance above the upper edge of sinkers 22 so that when needles I7 are elevated by raising cam 14 hooks 18 may enter between the cylindrical surfaces of rolls 30 and 31 at their point of closest spacing and with the loop of the hook parallel to the connecting line between the centers of the forming rolls.
  • Forming rolls 30 and 31 are located essentially at the point of one ofthe yarn feeds to the needles on cylinder 11, the yarn feed at this position being omitted.
  • Needle cam 14 raises the needles sufficiently to place the hooks of several of them, for example 3 as shown in FIG. 4, at the operating level of the two forming cams 30 and 31.
  • these rolls are mounted so as to be free turning. They are rotated by the frictional engagement of hooks 18 with the forming roll surfaces, and if the width of the hooks is excessive, each hook will be compressed and bent to its proper dimension.
  • the needle cylinder 11 carries the needles between the forming rolls 30 and 31 and after the gauging and/or correcting action thence to the next feed where a conventional raising cam will elevate all needles to the normal operating position and the prescribed knitting action with all needles, including those corrected, will resume.
  • This corrective action is available whether utilized or not for each and every needle once per revolution of the needle cylinder 11.
  • Forming cams 30 and 31 are supported in their freely rotatable and adjustable position by means of the con struction shown at the upper portion and lefthand portion of FIG. 1.
  • Shafts 30a and 31a of these rolls are fixed to a horizontal supporting block 36 which is mounted on a horizontal extension bar 35, for example by screws shown in FIG. 1.
  • Bar 35 is horizontally adjustable in order to locate forming rolls 30 and 31 in proper relation to the rotating needle cylinder 11.
  • Extension bar 35 can be shifted horizontally with respect to a cooperating supporting arm 34 which is secured by means of a split collar 33 vertically adjustable on a supporting post 32 (FIG. 2) mounted on the frame 12 of the knitting machine.
  • Extension bar 35 is slidable in a locking groove in arm 34, the two parts being held to gether in adjusted position by means of connecting screws 34a.
  • Shaft 30a for forming roll 30 consists of the smooth portion ofa screw, the inner end of which is in threaded engagement with a hole in block 36. It is important to be able to adjust the distance separating the peripheries of the two forming rolls 30 and 31 to correspond with the dimension of the hooks used in any particular knitting machine. Accordingly the shaft 310 of forming roll 31 and on which this roll turns is provided with an eccentric stud 37 having a threaded nut on its outer end. The adjustment between the two rolls is made by turning the eccentrically mounted shaft 31a, after which the nut is tightened.
  • Forming roll 31c and eccentric shaft 31b are substituted for the parts 31 and 31a respectively.
  • the forming roll 31c has special teeth or detents 38 cut on its lower surface portion 39 of equal circular pitch to match that of the needle slots in the needle cylinder 11.
  • the upper portion of the forming roll 31(' is plain like that shown in FIG. 1.
  • the backs of the upper portion of a needle 17 will engage in nested fashion the teeth or detents of forming roll 31c as the needles are forced upward by the raising cam 14 to bring their hooks 18 between the forming rolls and 31c. With this arrangement any tendency of the hook to twist from the pressure of the forming rolls is avoided.
  • said forming rolls being mounted for rotation on either side of the path described by the needle stroke between which the needle hook is adapted to pass;
  • a knitting machine including an array of needles arranged on a rotatable needle supporting cylinder, said needles having books at their upper ends and a mechanism for causing said needles to reciprocate to perform the knitting operation, the improvement in combination therewith which comprises:
  • said forming rolls mounted for rotation on either side of the path described by the needle stroke between which the needle hook is adapted to pass;
  • said forming rolls being disposed at a predetermined position relative to the path described by the needles during the rotation of the cylinder;
  • said forming rolls being mounted for free rotation such that the forming rolls are caused to rotate as the hooks pass between and frictionally engage the rolls during rotation of the cylinder.
  • the improvement according to claim 4 including means for adjusting the position of the forming rolls in a radial direction relative to the needle cylinder.
  • the improvement according to claim 5 including means for adjusting the position of the forming rolls in a direction parallel to the axis of the needle cylinder.
  • a knitting machine wherein said roll is provided with a series of slots extending around the periphery thereof for receiving a portion of the needles as they pass between said said forming cams.
  • a knitting machine wherein at least one of said forming rolls is provided with a series of slots extending around the periphery thereof for receiving a portion of the individual needles as they pass between said rolls.
  • a. a pair of spaced forming rolls for reforming unintentionally opened latch needle hooks to the proper gauge width, said forming rolls mounted for rotation on either side of the path described by the needle stroke between which the needle hook is adapted to pass at a section in the knitting machine where a knitting operation is not being performed, said forming rolls being spaced apart by a distance equal to the desired width of the hook.
  • a knitting machine including an array of neetentionally opened latch needle hooks to the 10 dles with hooks at their upper ends and a mechanism proper gauge width, said forming rolls mounted for rotation in the same plane on either side ofthe path described by the needle stroke between which the needle hook is adapted to pass, said forming rolls being spaced apart by a distance equal to the desired width of the hook and configured to co-act simultaneously with opposite sides of the hook.
  • the improvement in combination therewith which comprises:
  • said forming rolls being mounted for rotation on either side of the path described by the needle stroke between which the needle hook is adapted to pass;

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US260280A 1972-06-06 1972-06-06 Knitting machine apparatus for reclosing unintentionally opened latch needle hooks Expired - Lifetime US3875765A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US260280A US3875765A (en) 1972-06-06 1972-06-06 Knitting machine apparatus for reclosing unintentionally opened latch needle hooks
CH616273A CH578072A5 (enrdf_load_stackoverflow) 1972-06-06 1973-05-01
GB2003473A GB1437374A (en) 1972-06-06 1973-05-01 Knitting machine
DE2325815A DE2325815B2 (de) 1972-06-06 1973-05-22 Maschine zum Herstellen von Maschenware

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US260280A US3875765A (en) 1972-06-06 1972-06-06 Knitting machine apparatus for reclosing unintentionally opened latch needle hooks

Publications (1)

Publication Number Publication Date
US3875765A true US3875765A (en) 1975-04-08

Family

ID=22988534

Family Applications (1)

Application Number Title Priority Date Filing Date
US260280A Expired - Lifetime US3875765A (en) 1972-06-06 1972-06-06 Knitting machine apparatus for reclosing unintentionally opened latch needle hooks

Country Status (4)

Country Link
US (1) US3875765A (enrdf_load_stackoverflow)
CH (1) CH578072A5 (enrdf_load_stackoverflow)
DE (1) DE2325815B2 (enrdf_load_stackoverflow)
GB (1) GB1437374A (enrdf_load_stackoverflow)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US421915A (en) * 1890-02-25 Circular-knitting machine
US1066367A (en) * 1910-11-18 1913-07-01 Wolcomb Machine Company Evener for spring-needle knitting-machines.
US2033858A (en) * 1933-06-14 1936-03-10 Joseph A Sommers Lock stitching attachment
US2066440A (en) * 1934-10-26 1937-01-05 Celanese Corp Circular knitting machine
US3093986A (en) * 1960-10-28 1963-06-18 Marvin B Baker Needle control device for circular knitting machines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US421915A (en) * 1890-02-25 Circular-knitting machine
US1066367A (en) * 1910-11-18 1913-07-01 Wolcomb Machine Company Evener for spring-needle knitting-machines.
US2033858A (en) * 1933-06-14 1936-03-10 Joseph A Sommers Lock stitching attachment
US2066440A (en) * 1934-10-26 1937-01-05 Celanese Corp Circular knitting machine
US3093986A (en) * 1960-10-28 1963-06-18 Marvin B Baker Needle control device for circular knitting machines

Also Published As

Publication number Publication date
CH578072A5 (enrdf_load_stackoverflow) 1976-07-30
DE2325815A1 (de) 1973-12-20
DE2325815B2 (de) 1975-07-31
GB1437374A (en) 1976-05-26

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