US1547590A - Yarn-feeding mechanism for knitting machines - Google Patents

Yarn-feeding mechanism for knitting machines Download PDF

Info

Publication number
US1547590A
US1547590A US716762A US71676224A US1547590A US 1547590 A US1547590 A US 1547590A US 716762 A US716762 A US 716762A US 71676224 A US71676224 A US 71676224A US 1547590 A US1547590 A US 1547590A
Authority
US
United States
Prior art keywords
yarn
cam
finger
clamp
cutter
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
US716762A
Other languages
English (en)
Inventor
Charles C Krieble
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.)
Wildman Manufacturing Co
Original Assignee
Wildman Manufacturing 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 Wildman Manufacturing Co filed Critical Wildman Manufacturing Co
Priority to US716762A priority Critical patent/US1547590A/en
Priority to FR585285D priority patent/FR585285A/fr
Priority to DEW69840D priority patent/DE456937C/de
Priority to DEW66693D priority patent/DE449228C/de
Application granted granted Critical
Publication of US1547590A publication Critical patent/US1547590A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

  • the invention concerns a multiple feed machine in which the yarns are introduced selectively in any desired order. It is shown in connection with a rib machine employing latchneedles though it is not limited to a machine of this type.
  • Fig. 1 is a plan View of strikers or cams on the fixed base of the machine.
  • Fig. 1 is a detail.
  • Fig. 1 is an edge of the striker cams.
  • Fig. 2 is a plan view of the yarn feed wheel and associated elements.
  • Fig. 3 is a, front view of mechanism for controlling the yarn feed fingers and yarn cutter and clamp.
  • I V n Fig. 4 1s a side view of yarn cutter and clamping means.
  • Fig. 5 is a detail View of one of the shafts belonging to the yarn feed finger controlling mechanism. 7 t
  • Fig. 6 is a plan view of one of the cams for controlling the yarn fingers, being in effect a plan view of Fig. 5.
  • Fig. 7 is a view of the yarn feed wheel and yarn fingers. This view is looking in the direction of the arrow 6 in Fig. 2.
  • Fig. 8 is adetail plan View of the yarn cutter and clamp and associated parts.
  • Fig. 9 is a view of Fig. 8, looking in the direction of arrow 0. r
  • Fig. 9 is a view of the yarn cutter detached.
  • 1 indicates the needle cylinder, 2 the dial, 3 the cylinder cam box, and 4 the dial cams, of a rib knitting machlne, these parts being shown c0nventionally.
  • the machine may be of the so-called dogless type, though it may be of other forms.
  • the dogless head is indicated at 5, one of the supporting brackets being indicated broken away at 6.
  • the yarns, of which there may be various numbers, are shown mal position, by springs 18, Fig. 3, and they are turned in the opposite direction by a cam 19 which is supported in the fixed base ring 7.
  • the cam 19 is raised to dilferent levels by suitable pattern mechanism so as to select and operate upon either one of the arms 20 on the rock shafts 1 1, there being one of these tappet arms for each rock shaft. These arms are arranged in respect.
  • the lowered yarn finger will be retained in this position after it leaves the cam 19 by a detent 22 whose tooth 22 passes beneath the projection 8 at the tail end of the yarn finger.
  • This detent rotates aboutthe axis of the shaft 14 and it is under pressure of a spring 22 so that it snaps into position to lock the yarn finger down as soon as the shoulder 8 (Fig. 1) rises above its plane.
  • the detent is arrested by a stop pin 22. 1
  • This finger will now rise to its non-feeding position and its tail projection orshoulderS, will immediately drop in front of the tooth 22 of the detent and will hold this detent retracted, as shown atthe right of Fig. 2, and this condition will persist after the rotary movement of the head has carried the group of yarn feed fingers on beyond the cams 19, 19*.
  • the rise of this finger to its non-feeding position will be free to take place as soon as the detent is operated by the cam 19*, because the cam 19 will not be in the path of the tappet arm 20 belonging to this released yarn finger, and hence the cam 19 will not cause the cam 13 to be swung into position to keep this released finger down.
  • cam19 when cam19 is set in towards the centerof the machine, it will retire any of the detents 22, all of whose arms are. in the same horizontal plane.
  • the detent of the yarn finger whichhas just been lowered will, therefore, be op erated in passing the cam 19*, but this will be anidle movement and the newly lowered yarn finger will not rise because the arm 20 still will be riding on the edge of the cam 19 and thus the cam 13 willbe maintained in the position to which it was turned with its high part against the shoulder 21 to hold the finger down.
  • the detent of this finger passes the cam 19 it will snap again into position tohold the finger in its lowered position when the movement of the feed mechanism has carried the same past the cam 19.
  • the lugs of the pattern mechanism are so disposed, and are of such height relative to each other, that either one of the arms 20 (which are at different elevations, Fig. 3), will be hit by the cam 19 to get selection of the yarns in any desired order.
  • These yarns preferably are of different colors so that color striping is produced. 7
  • the yarn guiding ends of the fingers are located in a'series substantially radially in respect to the knitting head.
  • Cooperating with these fingers is a toothed yarn feeding wheel 32, the teeth 33 of which incline in the direction of rotation of the wheel, indicated by the arrow y, Fig. 2.
  • the wheel is on a shaft 3st mounted in the boss 15 of the bracket 15.
  • This bracket is fixedvto the flange of the cam box 3' to rotate therewith and carry the toothed-wheel 32 and all the fingers and their controlling cams, shafts 1st and detents 22, around the axis of the machine as one body,'to feed theyarn to the non-rotating series ofneedles it.
  • Each yarn finger has a main stem portion overlying the wheel, and a down-turnedend, as at 35, adapted, when the finger is lowered, to reach down below the upper surface of the wheel, so that the yarn extending through the eye of this lowered yarn finger will be lowered across the edge of the wheel to be taken by the pointed ends of one of the teeth thereof and be carried forward thereby in the direction of the arrow y, Fig. 2, to the elevated needles which are now about to descend and take this new yarn.
  • the teeth extend upwardly and outwardly from the upper edge or plane of the yarn carrying wheel, so that the yarn will be positively held and carried, despite any irregularities in its movement, and will not slip or flirt off from the teeth.
  • These teeth have the metal cut away from between them from the upper edge or surface of the wheel downwardly, and for the urpose of providing an upper bearing edge for the yarn I employ a shell-like member a which fitsv within the conical cavity of the wheel and extends above the point where the out between the teeth terminates. This member is held by the same screw Z) which holds the toothed wheel to its shaft.
  • a cutter 39 consisting of a blade pivotally mountedwithin the circle of teeth at 39 to the bar 41, and pressed by a spring 42 against the face or edge of the other shearing member,- which consists of the plate 38 forming a part of the bracket 15 attached to the main bracket 15.
  • This plate fits down. within the cavity formed in the upper side of the toothed wheel and bears upon the thin sheet member a.
  • the edge of this plate 38 which cooperates with the movable cutting knife 39 is indicated at 38.
  • This knife when elevated stands as shown in Fig. 7, with its front end slightly above the plane of the upper surface of the plate 38 and is thus in position to receive the yarn beneath it. It will be noted that its cutting edge in clines downwardly from the free end of the knife so that it exerts a shear cut on the yarn when pressed dowi'iwardly.
  • the clamp 36 consists of a bar pivoted at 36 to the bracket 15 and it, like the knife, extends at substantially an angle of 45 to a radial line passing through the center of the needle cylinder and the axis of the toothed wheel, and is thus in the most favor able position for the entrance of the yarn beneath it when withdrawn from the needles.
  • a bar 41 pivoted to' the bracket 15 at 41 This bar carries the cutting knife directly, as above mentioned, and it exerts pressure upon the clamp 36 through a leaf spring 36 which is attached to the clamp bar on its upper side.
  • the operating bar 421 is pressed by a leaf spring 41 held by screws to the bracket 15. This spring acts on the tail projection 4:1 of the bar 41 and tends to lift it at its free end together with the knife, and also to relieve the clamp of pressure.
  • a link 14 is thrust upon, which is pivoted to a collar 14.5 adapted to turn about a fixed post 1 1 forming a part of the bracket structure.
  • This collar will draw upon another link 1 1 pivoted thereto and to a tappet 22 adapted to turn freely about the lower end of the rock shaft 14?.
  • This-tappet has its arm 22 in the same horizontal plane with the arms 22 of the detents 22, and is adapted to strike the cam 19 when this is projected inwardly towards the axis of the machine when the post 24 rises and brings its cam portion 23 into action againstthe cam slide 19*.
  • cam 19 will strike the last one of the cams sn p 20 belonging to the yarn finger it is de- 7 sired to throw into work. Raising of cam 19 will set cam 19 inwardly to trip the detent which has been holding a yarn finger in feeding position. Now the arm 20 strikes the cam 19 at 19, and the new yarn finger is thrown down, next the detent of the yarn finger which has been down in feeding position is tripped by striker cam 19 to cause said finger to lift, and withdraw its yarn, and thereafter the tappet arm 22 will strike the cam 19 to open the clamp and raise the cutter to receive the yarn which has just been withdrawn, and following this the tappet arm 20 will strike the stationary cam 19 and the clamp will be closed and cutter operated to sever the idle yarn.
  • the cutter operates within the circle of teeth but close to the periphery of the wheel-,-
  • the function of the toothed Wheel is primarily to carry the yarn from the needles into the clamp and cutter. It also contributes to the organization of the yarn feed fingers in the relation illustrated in respect to the needles. 7
  • a movable cutter and clamp a fixed plate with which the cutter and clamp cooperate, atoothed wheel for moving the yarn-when withdrawn from the needles into the cutter and clamp, said fixed plate cutter and clamp being within the circle oftee'th of the wheel, and means for positively operating the cutter and clamp to cutting and clamping position respectively, substantially as described.
  • a toothed wheel In combination in a circular knitting machine, a plurality of yarn feed fingers, a toothed wheel, cutting and clamping means for the yarn, said wheel having its teeth inclining in the direction of rotation, overhanging the periphery of the wheel at their upper end, the body of the wheel being cut down between the teeth, providing the bearing edge for the yarn between the teeth below the upper ends thereof, said wetting and clamping means being located within the circle of teeth and having the cutting edge and clamping face below the plane of the upper ends of the teeth, substantially as described.
  • a plurality of yarn feed fingers with means for moving them to and from feeding position, a toothed wheel having a recess in its upper face with teeth projecting from the upper edge of the wheel, a member held in the recess presenting a bearing edge for the yarn between the teeth, yarn cutting and clamping means o -rerlying said recess and within the circle of teeth and means for operating the yarn cutting and clamping means, substantially as described.
  • yarn feed fingers means for moving them to and from yarn feeding position, a toothed wheel, a clamping plate above said wheel and fixed stationary within the circle of teeth, a yarn clamp cooperating with said plate, a yarn cutter within the needle circle cooperating with the side edge of the said plate, and
  • yarn feed fingers means for moving the same towards and from feeding position, a toothed wheel, for carrying the yarn, a plate above the upper side. of the wheel, a yarn clamping member and a yarn cutter movable in relation to the said plate and said cutter cooperating with the edge of said plate, a pivoted arm to which the outter is pivoted, a spring for pressing the cutter against the edge of said plate, said pivoted arm pressing upon the clamping mem ber, and means for operating said arm, substantially as described.
  • a plurality of yarn fingers with means for moving the same towards and from feeding position, a wheel having teeth prooutwardly and forwardly from the body of the wheel, to carry the yarn to and from the needles, anon-revoluble yarn clampingplate arranged within the circle of teeth and below the upper ends thereof, and a yarn clamp associated with said plate, and a yarn cutter operating below the plane of the upper ends of the teeth, substantially as described.
  • a plurality of yarn fingers with means for moving them to and from feeding position, comprising a vertical rock shaft for each finger, a cam and tappet thereon, yarn clamping and cutting means, a vertical rock shaft having a cam for operating the yarn cutter and clamp, tappets connected with the rock shaft, and striker cams for operating the tappets of the several vertical rock shafts as the latter travel past said cams, substantially as described.
  • rock shafts having arms at different elevations and having cams for operating the yarn fingers, detents for holding the yarn fingers in feeding position, a yarn clamp and cutter, a rock shaft having a cam for operating the same, tappet arms connected with the latter rockshaft, a cam 19 movable to different elevations for contacting with the arms of the rock shafts, a cam 19 which is moved to operative position when the cam 19 is raised for releasing the detents of the yarn fingers, and also for operating the tappet, which through the rock shaft opens the clamp and cutter, and a striker cam 19for operating the other tappet for closing the clamp and cutter, substantially as described.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US716762A 1924-05-29 1924-05-29 Yarn-feeding mechanism for knitting machines Expired - Lifetime US1547590A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US716762A US1547590A (en) 1924-05-29 1924-05-29 Yarn-feeding mechanism for knitting machines
FR585285D FR585285A (fr) 1924-05-29 1924-07-16 Mécanisme fournisseur de fils pour machines à tricoter
DEW69840D DE456937C (de) 1924-05-29 1924-07-25 Fadenklemm- und Abschneidvorrichtung fuer die Fadenzufuehrung von Rundstrickmaschinen
DEW66693D DE449228C (de) 1924-05-29 1924-07-25 Fadenzufuehrung fuer Rundstrickmaschinen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US716762A US1547590A (en) 1924-05-29 1924-05-29 Yarn-feeding mechanism for knitting machines

Publications (1)

Publication Number Publication Date
US1547590A true US1547590A (en) 1925-07-28

Family

ID=24879331

Family Applications (1)

Application Number Title Priority Date Filing Date
US716762A Expired - Lifetime US1547590A (en) 1924-05-29 1924-05-29 Yarn-feeding mechanism for knitting machines

Country Status (3)

Country Link
US (1) US1547590A (de)
DE (2) DE449228C (de)
FR (1) FR585285A (de)

Also Published As

Publication number Publication date
DE456937C (de) 1928-03-06
DE449228C (de) 1927-09-09
FR585285A (fr) 1925-02-24

Similar Documents

Publication Publication Date Title
US2824436A (en) Yarn clamping and severing mechanism for knitting machines
US1547590A (en) Yarn-feeding mechanism for knitting machines
US1945971A (en) Knitting machine
US2551385A (en) Yarn severing and clamping mechanism for knitting machines
US2580513A (en) Yarn trapping and severing means for circular knitting machines
US1911698A (en) Pattern mechanism for circular rib knitting machines
US1256062A (en) Yarn-feeding device for knitting-machines.
US1105735A (en) Circular french-welt knitting-machine.
US1400180A (en) Yarn severing and clamping device for knitting-machines
US1435736A (en) randall
US1683540A (en) Island
US1634874A (en) Knitting machine
US1883320A (en) Yarn cutting and clamping device
US2122845A (en) Yarn changer for knitting machines
US2185225A (en) Braiding machine stop motion
US1727783A (en) Binder for textile machinery
GB742536A (en) Improvements in yarn trapping and severing devices for circular knitting machines
US1248206A (en) Yarn cutter and holder mechanism for circular-knitting machines.
US1358264A (en) timson
US2019940A (en) Yarn feeding means
US1907341A (en) Circular knitting machine
GB742572A (en) Improvements in or relating to knitting machines
GB1005832A (en) Circular knitting machines having yarn severing mechanism
US1293813A (en) Combined thread-binder and thread-severing device for knitting-machines.
US1167251A (en) Striping attachment.