US2581012A

US2581012A - Spinning, twisting, and like machine

Info

Publication number: US2581012A
Application number: US105357A
Authority: US
Inventors: Garnett James Clifford
Original assignee: Baxter Brothers and Co Ltd
Current assignee: Baxter Brothers and Co Ltd
Priority date: 1948-07-21
Filing date: 1949-07-18
Publication date: 1952-01-01
Anticipated expiration: 1969-01-01

Description

Jan- 1, 1952 J. c. GARNETT SPINNING, TWISTING AND LIKE MACHINE Filed Jul 18, 1949 3 She ets-Sheet l Jan. 1, 1952 J. C. GARNETT SPINNING, TWISTING AND LIKE MACHINE 3 Sheets-Sheet 2 Filed July 18, 1949 Jan. 1, 1952 J. c. (BARNETT TWISTING AND LIKE MACHINE SPINNING 3 Sheets-Sheet 3 Filed July 18, 1949 v ,n: 3 3, 8 Y Y 2 w 2 I! w NA :HU a 8m m n I a m ww v I a 3 w m 5 a 7 m 3 6 3 Patented Jan. 1, 1952 SPINNING, TWISITING, AND'LI'TKE MACHINE James Clifford Garnett, Darkfauldylslai ggowrie, Scotland, assignor. of one half to Baxter Brothers land & Company Limited,l)'undee, Sci'it Application July 18, 1949,;smaist.105357 In GreatBritain Jnlyfil, 1948 Thisinvention relates to spinning, twisting and like machines and refers more particularlyto the laying of the yarn or other material on to the bobbins, spools or pirns.

It has for its chief object to provide improved means for automatically providing a length or tail-of yarn on each bobbin or the like during the spinning, twisting or like process, so that both ends-ofthe yarn thereon are-available for securing' to the outer end of the yarn on another bobbin orthe like to facilitate production in subsequentprocesses. I v

:It hasalready beenproposed'in a yarn windingmachine to provide bobbins or the like with these tails which areknown as transfer tails.

ln one known arrangement, in order to provide'a tail, it has been proposed to provide the barrel 'of-a flanged bobbin with an extension below the bottom flange thereof for the reception-cf the transfer tail andtoprovide a device comprisingmeans for holding and driving the bobbin and a guide movable beyond the flange of the bobbin and adapted to carry the yarn over the edge of the flange so as to bring the yarn into contact with the extension and to cause a small amount of yarn to be wound on the extension for use as a transfer tail. The yarn is automatically severed :when the tail' is formed. In this arrangement the tail forming operation iscontrolled byomovement of a hand lever and requiresthe attention of an operative.

In another known arrangement for producing a transfer tail on a ilangedbobbin in a ring-spinhingirame it has been'proposed to provide the lower flange ofthe bobbin with a peripheral groove to accommodate the transfer tailand a plurality of grooves formed on the inner face of. said flange communicating with the peripheral-groove for leading the yarn into and out of the'fperip'heral"groove; a series of shallow slots being 1 disposed circumferentially about the flangegthese slots serving asmeans for severing andeng'aging they'arn when it-is held against them. Vat'a time when the bobbinjis rotating at high speed; v a v v This arrangement isadapte'd-for use with the yarn guiding device -hreinbe fore referred to as. forming part of the-first ,known arrangement, Further 'in a ring spinning frame ithas sen proposed-to form'a transfer tall at the uppr jend of the bobbin, the arrangement requiring the attention bf and manipulatio'n'by an operative.

I lO'ne ofLthe objects of the present inventionjis to; provide: means, in a spinning, twisting or like machine; for automatically forming the trans- 1001m (Chet-" 54) ingoper'ation unnecessary.

erratum eats the' bobbins, severing'theyarn to l for m the tail and holding the severed tall against lashing out under centrifugal action. all these operations being perfo med?sutematicany Without the necessity or stop ing the machine or the intervention of an operative.

Another object of the invention is to provide an'imp'roved automatic transfer tail-formingand yarn seve'ring device particularly adapted for use with a spinning or'like textile frame of the kind wherein the filled bobbins are doffed and re placed by empty bobbins, ,th'connecting yarn flb'ni the previously filled bobbins remaining 1111 severed while a positive start is being effected on'th'e empty bobbins occupying the same spindle positions as those of the previously filled bobbins, andis subsequently slashed. fHeretofore in a spinning frame of the last mentioned type it" has been necessaryto stop the spinning operation after astart on the new bobbins has been made to allow the slashing of the yarn conne'cting'the filled bobbins in the 'dofling position with. the empty bobbins invthe spinning position slashing operation is usually done by an operative whoprbceeds along the frame with aknife andcuts all the jyar'ns "as they lie 'inpo'sition over aslasher bar.

Another Object ofth'e 'ln'viltiohis to refidl. the use of the slasher bar and the hand nasng the invention is: v particularly adapted for use with fiyer spinning framesit also adaptameto ring Or cap'spinningframes; According to the invention in a'spinning twist-1 ing or'like' frame preferably having dofling m'ech' anism of the kind hereinbeforereferrd toand wherein the flanged bobbins are carried on hold ers rotatably mounted on fixed s indles arried on a'builder,'means are provided for catching the yarnj'oining "an empty or unfilled bobbin} the spinning position and armed bobbin the doffing position, during therotation 'ofthe rm: filled -bobbin by 'the'yarn winding -'device and leading the yarn so that. it is wound round tlie outer-"peripheryof the lower flange on theum filled bobbin and is :then automatically presented to a severing device. j a

With this arrangement the, yarn is cut-leave ing'a-length.wrappedround the periphery of the lower flange to form thetransferttail, the spin;- ning proceeding tofillthebobbin in the-usual manner..- v e "'M'eans are also provided for oatehing thev tail and preventing it from ,lashing out under cen trifugal 7 action. 7 The {formation and severing of the transfer tail is accomplished automatically without stopping the frame and without the intervention of an operative. In one arrangement according to the invention, a single helical groove is provided on the periphery of the lower flange of the bobbin which as the empty or unfilled bobbin rotates leads the yarn so that it is wound round the outer periphery of the flange. After being wound round the flange, the yarn is caught in a second guide member arranged on the bobbin holder. This second guide means positively guides the yarn into such a position as to present a portion of the yarn under tension to a fixed blade mounted at a suitable point on the builder or on the base of the spindle carrying the holder. In this manner, as rotation of the holder continues the yarn is severed so that a transfer tail substantially of the length of the circumference of the bobbin flange is formed. If desired, the periphery of the lower flange of the bobbin may be formed with a circumferential groove communicating with the helical groove to assist in retaining the transfer tail on the flange during subsequent transit.

This second guide member may consist of a pressed metal cap, secured to the bobbin holder beneath the bobbin, the bobbin seating in a recess on the top of the cap. At a suitable point, the periphery of the cap is cut and slotted to form guide fingers arranged to catch the yarn after it'has been wound round the periphery of the the flange to form the tail, and to present a portion of the yarn under tension to the fixed blade. The blade may be carried on the usual drag adjuster plate beneath the bobbin holder, or if no drag adjuster is used, on the builder which carries the spindles on which the bobbins are mounted. The cap is arranged to form a guard for the blade. Further, the above-mentioned guide fingers are soarranged that after severance, the end of the tail is held down and cannot fly outwards or unwrap from the bobbin. Also the second guide member may be formed integrally with the base of the bobbin holder instead of in cap form. It will be noted that the above-described arrangement includes the formation of an helical groove in the lower flange of the bobbin; In a modification the helical groove is dispensed with and the yarn is caught and guided to the outer periphery of the flange'by means of a catch consisting of an upright member fixed in the recess in the aforesaid cap in the clearance between the bobbin flange and the inner wall of the recess and extending up to a point below the upper face of the bobbin flange. .To enable the invention to be fully understood it will now be described by reference to the accompanying drawings which show the invention applied to a flyer spinning frame.

Fig. 1 is a'vertical transverse section of one side of a multi-spindle flyer spinning frame showing part of the dofling mechanism, with an empty bobbin in the spinning position before the severbin holder in position on the spindle of the spinning frame, and

Figs. 6 and 7 are plan views of details of the yarn guiding means applied to the bobbin holder ccording to the invention;

Fig. 8 is an elevation of the lower part of a modified form of bobbin.

Referring to Fig. l. the spinning frame illustrated is of known type and is divided into units containing twelve spindles each, the spindles (not shown) being mounted on a builder Ill supported on a carrier H. A bobbin 12, mounted on a holder, is placed on each spindle and yarn drawn from a roving bobbin [3 is passed to a flyer H (one for each spindle) which is driven by the belt Hi from the usual source of power. In operation, the flyers rotate about fixed points and the builder H3 is moved slowly up and down so that the yarn is built up on each bobbin by the respective flyer l4 until the bobbins are filled. The bobbin holders rotate under the drag on the yarn produced by the flyers.

Arranged beneath the builder carrier H is a dofling arrangement which comprises end discs it (one only being shown) mounted on a rotary shaft H, the discs being fitted with means for holding a builder carrying empty bobbins and for receiving and holding a builder carrying the bobbins just filled which is lowered from the spinning position, the frame being stopped. This domng mechanism forms no part of the present invention, the action being briefly as follows: In the position shown in Fig. 1, the builder ill is in spinning position having been loaded with empty bobbins l2 and raised. In the dofling arrangement below a builder l8 carrying the previously filled bobbins 19 has been lowered into position, the yarn A being still under control of the flyers l4 and about to be wound round the bobbins I2. The frame is then restarted slowly, to wind yarn A from bobbins 19 onto bobbins l2 to obtain a start on the bobbins l3. At this point the'f-rame is again stopped, connecting yarn A is slashed and the frame restarted. Filled bobbins !9 are then removed and replaced by empty bobbins. When the bobbins i2 are almost full the set of empty bobbins 20 on a builder 2| are moved by rotation of the shaft I! to position 20a, this action simultaneously bringing the dofling device into position to receive the builder in carrying the full bobbins. The frame is stopped when the bobbins in the spinning position are full and the builder l0 carrying the filled bobbins is lowered on to the dofiing device and shaft I1 is rotated to bring the filled bobbins into the full line position previously occupied by the bobbins 19, the fresh set of empty bobbins 20 being simultaneously moved into the position indicated in chain lines, ready for movement up into the spinning position. It is thought that the above brief description of a Well known type of flyer spinning frame will suffice for the understanding of the present invention which is concerned with the means for producing transfer tails on the bobbins used on the spinning frame.

Referring to Figs. 2 to 4. According to the in: vention, in order to provide for the automatic formation of a transfer tail; the lower flange 22 of each bobbin 23 is formed with an helical groove 24, as shown, this groove leads into a circumferential groove 25 on the outer periphery of the flange, but this groove 25 is not essential and may be omitted leaving the flange simply with an helical groove'which will then extend from the upper edge of the flange to a point adjacent to the base- 28iof-the bobbiri=holder-. f -Thebaseifi ise provided wi-th twosscrevworother pegs flaa arranged on a diameter- -and adaptedto 'enter rtwoe correspondingholes for-med um thetundersideeoi thehase of tlie bobbin te holdgthe latten in -posi-a $1011:

-Referring again: td --Eigs-:- 2' to=- 42: A prefer abiymetal cap 3-2 havingg; arcentral -hole :-and-= two diametral lioles correspondingtmtheholesior the pegs -29fa in the base za is rslipped overi tlieshaft ie 'ofgtlieebobbin holder :theapegsdSh ba/v ingbeen-removedirem the base, and then'thecap isetumedtobring thepeg holestherein-ante regis-v ter with the holes m-thea base and theepegs area replaced securing th'ecap --to ti-ie base-a s shown-in Fig: 2. Theeap 32- is formed =witha-recess-33 at the top-to;receive -the base of the bobbin; there being awlearance between-;the periphery-oteth'e-s v base and the wall -'of' -the,-= recess- Fi'g i dl showsa-the bobbm2'3: inclia-in lines in position-om the holderwitlr theme -32 21180 preventingthetail frommnwind n e ndill h l position. In order tog-provider a in guides the pgripheryofthe-capii -is;cut and-slottedfte provide three limers x," SA Z. W I y The fingers Y and -Z are preferablyformed'byy slitting partofthetop of the capat 34 and bend 35 big in parts of thea slit meta-Ito form-the finger-- Y integral with -the rim of -'the; cap; andi'the fin er- As;shown in-'Figs-. 5T-to fl a cutting blad'e di ls--- mounted' fixedly zine-holder 36 on the' sideof the drag adjuster --plate 31; the heldei -being alsopreferablyyformed with-a-lip 31 which engages-a;- flange- 38 on the b'ottomof the cap-32"and serves to hold the cap'against "being accidentallypulled'-=' oiff when the-=bobbin-is3=removed from -:theh0lder blade. 35 is arranged with; itscutting edge facing-fine direction of rotation of *thebobbinholderP-when itrctatesyunderthe action--of-*thefiyerr The direction of frotation-isindicated-by; thez arrow in-Figs; -6' and -'I-. I-n-sett-ingupthebobbin on; the-holder'itisimportant that the heli: cal groove 24 -in -;tl xefiange-should'=be -closely-a'd= igselnt to e:= p,of "t e-fin er Y 'o the li?'-' 3" so that the yarn cannot-aenter the second guiding means immediately-after being; caught-by groove- 24. T he tipof the finger Yisgpieffirablyslightly" raised above'the level-of'the top'rim of the cap to ensure that the yarn is,caught .one revolution after entering the helical groove 24.

This -can best beseen in Figs. 21 and and -'it will be noted that the tip of tliefingerY:flies-be,-v tween the- :-fi;ngers;-X and zpwithclearances on each side of it. The tip of finger Z is also bent slightly upwardly to leavea:small ,clearance;b'e tweenitr and the-tipof"fingerfiiY;i To .assis in ssembl n :t bbins cqr ectir a io rloa he caps*32 the 'partsof the bobbins; and capswhich should be in register may be painted with similar colours or otherwise distinctively and similarly marked so that registration is rendered simple and easily visible.

Assuming that an empty bobbin and bobbin holder constructed as above described with reference to Figs. 2 to 7 of the drawings is in the'spinning position occupied by the empty bobbin I2 windrtheeyarndw 1 it movinetupeandldown.andtalsq e ti! holden;

Ase-.theabobbm..;rotates 11 .6?

iss iie 1 a se zo vthe ,ob bin-:r whichvcauses:itzt twigs.lmlillditheemlip oiatherflange and y.vhen. .v .-ha..s:s:.0mo1.ct d;9ne round the periphery it reaches the finger the cap 32. Continued rotation causes;;th wrsli aovertheater; ofzifln eraxibet we i z w i t Eimthe -outer.--w.ai1;ofv.theic rhz.l q;thflt she a tiontoffitheiyarnriseunder tension-3W1 ch 11, thatlitzwilleeffiectivelrrbeseveredby:th biad Sinceithabobbin continuesgtolrotat is h portion or :theiyarnznow meetsgthesblad. 3i; n is severed; leaving; astail, gm? ,1 approximately. tn length otthe:--circumierence pfithehohbimfian ee 22; As roiationzcontinuesitheabobhinits 118%; end tor -the ta-il is :drivenzby-icentriiugahiomg 1 der'the fingemZmnd-cannotriseioutaoie hemaehfi21;; and lash abouti v If during the-formationxofrth'e taihpartjoigt e arn -should-pass lunderz-the fiangezof ;thebol1b this doesnotafiect: the operatiomasgWhel the; yarnis severed the ip'art ..underi-theebebbinnwill.i fermpartot thetail andcannot-ilyouta. To prevent-:- the =-:yarn passing fan-1 under :;th:r-.- bobbinflangw therebygeducing-lthe length ofitai that would be normally-available; thesbottonnof the-recess 33-in thecapmay be formedzwithxm I. bossed projections 39 arranged aszshownjngFigr 4 :;Y which will: project up =,.into; holes} in;-.the.;- bobbins fiangeand act as stops The a.bove =ioperation Of's'lh arrangement; not aifected :by the presence. of: the peripheral; groove 25: in thee bobbinflange anda'the' action is=-as ab'ovedes cribed zit said; grooigelis-t=v omitted-:1. Further-- e -modification thex-helical grooves 2 6 is omitted from-the bobbin "flange-and an-ordinaltye. flanged-bobbin is used; Allvtha-t-tis requiredg -ihv. thismodification is to provide t anifixedxverticai f catch membem ilipshown ineFig 3pm; thecleaance betweentherflange il' of the abobbin'la-ndsthee wall of -the:-recess :3321 This imember 4!?! :extends: up to substantially the level: of: the 1301 3,: ohgthm lower -fl'angeof I:the bobbiniwhent theilatten' in position on: the: holder or it:imay-preferablye. bez slightlylower -than this-level; and '1 posl tioned adjacent to the -open-ing .-between heeyarne guiding'fingers 'X, Y, Z in the-cap 32i-as-seenrinz:w Figr- 1. As th'e' bobbin and holder rotate; 38-231 ready described-"above" the yarnwi wh'ich as will be -;-seen-in'-'Fig-ure= l -extends at this timesat an acute; angle- -do-vmwards ,to ='thefi'l-led'- bobbin I9, is --caugh=t- -by-=-the catch-mem-ber 4!? which: causes it to wrap round the flange of the bobbin and to enter between the yarn guiding fingers X, Y, Z by means of which it is guided to the blade 35 and severed, the free end of the tail so formed being held in the cap as in the prex viously described arrangement. This modified arrangement has the great advantages that standard bobbins can be used without any alteration 7 to the senses and the need to locate the bobbins in particular position on the holder in relation to the guide fingers of the cap i unnecessary. It will be noted that inall the arrangements described, according to the invention, the formation of-the transfer tail is entirely automatic and there is no necessity to stop the frame in order to slash the yarn byhand as heretofore. Further the transfer tail is automatically limited in length so that yarn wastage in subsequent operation is minimised, and the tail securely held against lashing out and consequent possible destruction under the action of the centrifugal force.

"I claimr In a device for winding yarn on to bobbins to form yarn packages having transfer tails and. in combination, means for catching the yarn joining an unfilled bobbin in the filling position and a filled bobbin in a dotted position during the rotation of the unfilled bobbin by a yarn winding device and leading the yarn so that it is wound round-the periphery of the base of the unfilled bobbin, a yarn severing device, and means mount; ed below the base of the unfilled bobbin for. catching the yarn after it has been wound round the base of the bobbin and leading it under tension to the severing device so that it is severed.

-2. In a device for winding yarn on to bobbins to form yarn packages having transfer tails and in combination, a bobbin holder, a bobbin, a flange on the base of the bobbin, a helical groove in the periphery of the bobbin flange extending partially across the flange, a source of yarn supply, a filling means for drawing the yarn from the supply and winding it round the bobbin into the helical groove in the flange thereof and thence round the periphery of the flange,a yarn guide-on the holder underneath the base of the bobbin, a fixed cutter blade adjacent to the bobbin holder, means on the yarn. guide for catching the yarn after it has been wound round the periphery of the bobbin flange and leading it under tension to. the cutter blade so that it is severed.

3. In a device for winding yarn according to claim 2 a peripheral groove formed on the bobbin flange into which the helical groove leads.

4. In a device forwinding yarn on to bobbins to form yarn packages having transfer tails and in combination, a bobbin holder, a bobbin, a flange on the base of the bobbin, a helical groove in the periphery of the bobbin flange extending partiallyacross the periphery, a source of yarn supply. a'filling means for drawing yarn from the supply. and winding it round the bobbin into the helical groove in the flange and thence round the periphery of the flange, a cap secured to the bobbin holder beneath the bobbin, a recess in the top of the cap to receive the base of the bobbin, guide fingers formed in the periphery of the cap, acutter blade fixed beneath the cap, the guide fingerson the cap being arranged to catch the yarn after it has been wound round the periphery of the bobbin flange and to present it under tension to the fixed cutter blade so that it is severed.

5. In a device for winding yarn according to claim 4 an arrangement wherein the guide fingers 8.. on the cap are also arranged to hold down the severed end of the yarn so that it cannot fly outwards and unwind from the bobbin.

6. In a device for winding yarn accordingto claim 4, the provision of a cutting blade mounted fixedly in a holder adjacent to the base of the bobbin holder and a peripheral flange at the bot.-

tom of the cap, the holder also being formed with a lip which engages said peripheral flange to hold the latter against accidental removal. .7

.7. In a device for windingyarn according to claim 4, the provision on the bottom of the re cess in the top of the cap of a series of projections for preventing the yarn from being dragged far towards the spindle beneath the flange of the bobbin during the formation of the transfer tail.

8. In a yarn support adapted to receive a transfer tail, the combination of a base flange on s idv yarn support, a holder on which the support is mountedand a yarn guide comprising fingers formed integrally with the periphery of the base of the holder said fingers being shaped tocat'ch 1 yarn wound around said base flange. l

9. Ina yarn support adapted to receive altrans fer tailthe combination" of a base flange on said yarn support, a, holder on which the support is mounted, a yarnguide cap mounted on said.

holder, and yarn. guiding fingers formed by cutting and bending portions of the periphery of the cap said fingers being shaped to catch yarn wound round said base flange. Y 7 a g 10. In a device for winding yarn onto bobbins toform yarn packages having transfer tails and in combination, a bobbin holder, a bobbin, a flange on the base of the bobbin, a source of yarn supply,,a filling means fordrawing yarn from the supply and winding it around the periphery of the flange on the base of the bobbin, 3, cap secured to the bobbin holder beneath the bobbin, a recess in the top of the cap to receive the base of the bobbin and providing a clearance between its inner wall and the flange of the bobbin, guide fingers formed in the periphery of the cap, a cutter blade fixed beneath the cap, a, fixed vertical catchmember disposed in the clearance between the flange of the bobbin and the inner wall of the recess in the top of the cap, said member extending up to substantially the level of the top of the lower flange of the bobbin when the latter is in position on the holder and being positioned adjacent to the openings between yarn guiding fingers in the cap, said guiding fingers being arranged to catch the yarn-after it has been wound- REFERENCES CITED The following references are of record in the file of this-patent:.

UNITED STATES PATENTS Number Name Date 594,989 Finn Dec. 7, 1897 1,881,383 Wylie Oct. 4, 1932 2,261,239

lillvin et a1 NOV. 4.1941