US1822870A - Tension controlling device for knitting machines - Google Patents

Tension controlling device for knitting machines Download PDF

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Publication number
US1822870A
US1822870A US211734A US21173427A US1822870A US 1822870 A US1822870 A US 1822870A US 211734 A US211734 A US 211734A US 21173427 A US21173427 A US 21173427A US 1822870 A US1822870 A US 1822870A
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US
United States
Prior art keywords
tension
thread
disks
threads
knitting
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
US211734A
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English (en)
Inventor
Robert H Lawson
Arthur N Cloutier
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.)
Hemphill Co
Original Assignee
Hemphill Co
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 Hemphill Co filed Critical Hemphill Co
Priority to US211734A priority Critical patent/US1822870A/en
Priority to DEH117579D priority patent/DE509831C/de
Priority to GB22273/28A priority patent/GB295324A/en
Priority to FR658671D priority patent/FR658671A/fr
Application granted granted Critical
Publication of US1822870A publication Critical patent/US1822870A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/54—Thread guides
    • D04B15/58—Thread guides for circular knitting machines; Thread-changing devices

Definitions

  • This invention relates to thread tension devices, particularly for knitting machines, and more especially to devices for controlling the tension of yarn or thread in plating.
  • Fig. 1 is a left hand end elevatlon of a c 1rcular knitting machine having our inventlon ap lied thereto; v 0
  • Fig. 2 is a rear elevation of the mechamsm shown in Fig. 1;
  • Fig. 3 is a plan view showing the tension disks and associated parts, the supporting rod or post being in horizontal section;
  • Fig. 4 is aside elevation of the parts shown in Fig. 3;
  • Fi 5 is a side elevation of the so-called 104 gear of a Banner knitting machine having cams applied thereto for controlhng certain parts in accordance with our invention
  • Fig. 6 is a vertical section on the line 6-6 of Fig. 5;
  • Figs. 7 and 8 are somewhat diagrammatic views 'showin the course of certaln of the threads in di erent positions of the tension controlling devices.
  • Figs. 9 and 10 are details in frontelevatlon of certain of the parts shown in Figs. 7 and 8.
  • the purpose of this invention is to provide means for controlling the tension upon a thread or threads, yarn or yarns, particularand in the enand yarn will be used interchangeably.
  • the invention may be applied to var1o us types of knitting machines and under various conditions of knitting. While we have chosen to illustrate the invention as employed 1n association with means for platlng, 1t 1s to be understood that the invention is not restricted thereto and may be used in many dlfierent relations, although peculiarly applicable to the control of yarn or thread 1n or 1n association with plating.
  • the framing of the machine is indicated at 1, the bed plate thereof at 2, the needle cylinder at 3, the latch ring at 4, the supporting post therefor at 5, the main drive shaft at 6 and the so-called 104 gear at 7 upon the shaft 8.
  • the machine is provided with the usual uprlght post 9 upon which the yarn or thread tension devices are supported.
  • Upon the rod or post 9 near its upper end is secured 'a bracket 10, 11, from the upper end whereof horizontally extends a short stud 12.
  • rods 68 will allow this slack to be knit in without breakage of the yarns, and when rods 78, 79 have completed their upward movement all slack will have been knitin without a break of the yarns.
  • A is the slack yarn
  • B is the tensioned yarn passing through the tension wheel 28.
  • the springs 17, 18 are set so that tension wheels 13, 16 hold the yarns While the rods 7 8, 79 are A being moved downward to rake up the slack yarn when changing.
  • the bracket 10, 11 is laterally prolonged as indicated at 19 in Figs. 1, 3 and elsewhere, so as to constitute a support for additional yarn or thread tensioning devices and-also for thread guides, the latter being generally indicated at 20.
  • Laterally extending from the part 19 is a rod or stud 21 having thereon collars 22, 23 and 24,between which are respectively positioned the tension disks 25, 26 and 27, 28 held in yarn or thread tensioning relation by the light coil springs 29, 30, the collars 22, 24 being adjustable to vary the tension of the springs 29, 30.
  • the yarn B which may be assumed to be'the front yarn in plating, and hence in the knitted article appears at the face of the fabric, receives additional tension at the disks 27, 28, being engaged by the flat contacting faces of said disks, as indicated most clearly in Figs. 4, 7 and 8.
  • the two yarns or threads A, B are, of course, delivered from separate bobbins or other packages and pass through separate yarn guides 31. 32, shown most clearly in Fig. 3.;
  • each of said cams 33, 34 is in reality a two part cam having overlapping narrower or reduced ends indicated at the radial lines 35, 36 in Fig. 5, so as to present an uninterrupted surface for a part to be described.
  • the two parts of each of the cams 33, 34 are provided with circumferentially extending slots 37, 38, 39, 40 to receive screws 41, 42, 43, 44, thereby permitting the desired circumferential adjustment.
  • the adjacent ends of said cams 33, 34 are tapered as indicated at 45, 46, 47, 48 and between the pairsof tapered ends are positioned two blocksor brackets 49, 50, each provided with an are shaped flange 51, 52, and a radially extending slot 53, 54 for the reception of screws 55, 56, by means of which the radial position of said blocks or brackets may be varied.
  • the flanges 51, 52 prevent the undue outward movement of the part to be described that contacts with the inner edges of the cams 3a, 34.
  • brackets 57, 58 wherein is supported for to and fro movement a rock shaft 59 having laterally extending therefrom an arm 60 provided at its outer end with a roll 61 adapted to contact or bear against the inner edges 62, 62 of the two duplex cams 33, 34 as previously referred to.
  • the needle cylinder is reciprocated during the formation of split work, such, for example, as the ankle and the foot.
  • the 104 gear is, however, constantly rotated at a predetermined ratio with respect to the usual rotation of the needle cylinder, as, for example, four revolutions of the needle cylinder to one revolution of the 104 gear.
  • the needle cylinder is reciprocated as in the formation of split work, the yarn or yarns which are in action become momentarily slack when the direction of movement of the needle cylinder is changed.
  • One of the purposes of our invention is to take up the yarn or yarns upon change of direction of rotation of the needle cylinder (or relative direction of rotation of the needle cylinder and cam support or carrier), so that no slack occurs in the yarn or yarns.
  • the function of the cams 33, 34 is to rock the shaft 59 at such times as to operate other members or devices whereby the results referred to are secured.
  • the rock shaft 59 has fast thereon an arm 64 pivotally secured at its outer end at 65 to a link 66 which at its other end is pivotally secured at 67 to an upright rod 68.
  • the said rod 68 is, through the described connections, reciprocated at the proper times by reason of the cams 33, 34 upon the 104 gear 7.
  • a collar 72 above which is a light coiled spring 73 that in the upward movement of the rod 68 contacts with the arm or extension 74 of the collar 70, thereby preventing jar and also acting to assist in effecting the downward movement of said rod 68.
  • bracket 70 there is adjustably secured to the rod 68 a collar or bracket 75 which as shown most clearly in Fig. 2 has adjustably secured thereinby the screws 76, 77 two upright short rods 78, 79, pointed or tapered at their upper ends as indicated at 80, 81.
  • the tapered ends 80, 81 of the short or extension rods 7 8, 79 enter between the disks 13, 14 and 15, 16 respectively, as indicated in Figs. 3 and 8, so as to move the disks 13 and 16 away from the disks 14, 15, thereb permitting the two yarns A and B to pass reely or without tension between said pairs of disks, respectively.
  • Each of the short rods 78, 79 is provided with an opening, one of which is shown at 82 in Figs. 7 and 8, and through 'which the threads A and B respectively pass.
  • the two threads'A, B pass, as shown, from between the separated disks to the next guide eye at 83.
  • This is the position when the needle cylinder is turning in one direction or the other.
  • the needle cylinder changes its direction of movement in split work-the rod 68 has descended or is so positioned that the extension rods 7 8, 7 9 are not functioning to separate the pairs of disks and therefore the two yarns take the looped course indicated in Fig. 7, thus taking up what would otherwise be the slack portions of the two yarns resulting from the momentary change in direction of movement of the needle cylinder.
  • the springs 29, 30 are so constructed or so controlled that they impose less tension upon the disks 26, 28 than do the springs 17, 18 upon the disks 13, 16. This is indicated by the positions of the collars 17, 18 as compared with the collars 22, 24. 8
  • the tension controlling means may be associated with the regular take-up locking ineans whereby the latter maybe em ployed to hold the tension controlling means from operation at times.
  • Fig. 1 represented the vertical rod 84 extending to the tension lock (not shown). At its lower end said rod is pivotally connected to a link 85 pivoted at 86 upon a rock shaft adapted to be operated by cam or other means (not shown) in usual manner.
  • a roll or other lateral projection 87 Upon said rod- 84 is a roll or other lateral projection 87, the purpose whereof is in the upward movement of the tension lock rod 84 to engage the arm 64, and therefore to prevent such turning movement of the rock shaft'59 as would permit the roll 61 to come in contact with the inner edges 62 of the cams 33, 34.
  • the tension lock rod 84 is provided with means to prevent temporarily the functioning'of the rod 68.
  • Thread tension controlling means including two thread tensioning devices one of which acts also as yarn holding means and means for intermittently relieving the thread from tension by one of said devices whilepermitting it to continue at the other of said devices.
  • a knitting organization having means for imparting relative to and fro movement to the needles, means whereby upon change of relative direction of movement of the needles, the withdrawal of additional thread from the packages is momentarily prevented, said means including one or more pairs of tension and thread clamping disks, one or more rods adapted to have portions thereof entered between the respective disks to separate the same, and means controlled from the knitting packages is momentarily prevented, and
  • means including thread clamping means whereby upon change of relative direction of movement of the needles, a thread is relieved from tension at one point while remaining under clamping tension at another point, said means includedmg one ormore pairs of tension and threadclamplng d1sks, one or .more rods adapted to have portions thereof j entered between the respective disks to separate the same, and means controlled from the knittin head of the machine for operating said ro or rods.
  • means including thread clamping means whereby upon change of relative direction of movement of the needles, a thread is relieved from tension at one point while remaining under clam ing tension at another point, and where y intermediate said two oints of tension the slack in the thread -is ta en up.
  • a reciprocable rod adapted to act upon the tension means for both of said threads and to relieve the same periodically from tension at one point and to take up slack in the threads when so relieved of tension.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US211734A 1927-08-09 1927-08-09 Tension controlling device for knitting machines Expired - Lifetime US1822870A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US211734A US1822870A (en) 1927-08-09 1927-08-09 Tension controlling device for knitting machines
DEH117579D DE509831C (de) 1927-08-09 1928-08-01 Fadenspannvorrichtung fuer Rundstrickmaschinen
GB22273/28A GB295324A (en) 1927-08-09 1928-08-01 Improvements in means for controlling the tension on yarns in knitting machines
FR658671D FR658671A (fr) 1927-08-09 1928-08-07 Perfectionnements aux dispositifs de tension pour métiers à tricoter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US211734A US1822870A (en) 1927-08-09 1927-08-09 Tension controlling device for knitting machines

Publications (1)

Publication Number Publication Date
US1822870A true US1822870A (en) 1931-09-08

Family

ID=22788142

Family Applications (1)

Application Number Title Priority Date Filing Date
US211734A Expired - Lifetime US1822870A (en) 1927-08-09 1927-08-09 Tension controlling device for knitting machines

Country Status (4)

Country Link
US (1) US1822870A (fr)
DE (1) DE509831C (fr)
FR (1) FR658671A (fr)
GB (1) GB295324A (fr)

Also Published As

Publication number Publication date
DE509831C (de) 1930-10-16
FR658671A (fr) 1929-06-07
GB295324A (en) 1929-09-12

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