US2154304A - Rayon spinning mchine - Google Patents

Description

J. B. DOVE RAY N SPINNING MACHINE Filed July 17, 195 3 Sheets-Sheet 1 me m a n Ap ril ll, 1939. J B. DOVE I 2,154,304

' RAYON srnmme MACHINE Filed July 17, 1956 v s Sheets-Sheet 2 AP 5 f J. B. DOVE 2,154,304

RAYON SPINNING MACHINE Filed July 17, 1936 I5 Sheets-Sheet 5 x gall!!! P5 4P -1 Q I 2354304 r Atlanta,Gasilsignoiofiofly nine" mu afloum 1 3 Is m N -19 J Qflifii a l 'lth v vient oni; e ates; t w b nninz :,m11 y ;1a smb snacismeq.andm m edi e h tx iv artic larlyedire edji ombanyinad w hzsin wh eh l k c ra te whines; fonspinning,gayonforqother ijsynthetic, rereqc indicate-dike parts throughout the materia l;by means of whichthejthread-like prodvseveral flguresorwhich; f-

i i t isenpeditiously produced and, predete minedly Fig. l ;is a side elevation otthe machine v; ndu tormly on uit blelspoo :9; ieis-z e jws l c e fiono he li -konsiderehiediflicultyhas beenrexperiencedyin 1 g. 1. r' lthe pastiineiiectinga flne threadrf-rom woodpuip i. Fig.- 3isa transversesection'on the'line 3-3 of andgl helike'having a'iunii'ornrrgaugeandatthe i, p e i san e time ina volume suflicient toinsure emaki- Pig-A isan elevationzonaneniarged scale of the m w production atga-minimum oikcost,therefore, ratchet mechanism. v I y g 7 ,oneot theiinportant; objects oi. thisinvention isto s Fig,- 5 is a plane View of. Fig.4,

Qsin pIiIy-the operatingcomponentskof the machine I 1 g dget;theasamertimeeil'ect azspositiye :driving I issexnblyand cwrdinaition,oi interrelatedtparts, V v, g k v k 'ad 'ptedto-produceindividual multifilamentyarns v Fig fl is airagnlentaryvertical sectional detail, go flneiexture fromupine pulpzcellulosecoriother .a v wl'ou hthe bobbin drive wheel and mounting. uitabieymaterial;.5011 nonvariab1e'=-:gauge; at a; p, flfhe nrayonmakins m ch nes .with which I am -v greatlyw increased-1 spindle @winding', speed ito in- 1 familiar haveproven deiicient in many; ways such Z creas'e,ithewolume o1;production;atfa' decreasein .gas,;presenting costly, complex and. cumbersome roductiong costi :11: 1": 4:3; 1 ';,,mechanism s, non-positive driving connections, Anothenimportant :ObJQCt: or this invention is thereby rendering it diflicult to nmintain; a. uni eprovision ot aisimplifledandpositiv mechai iormythreadproduction:and ;gauge,,diflcult of izgrnisrnqoperableatoi control.rand ='efiectfia predeterexpeditious adiustmentto efiect variati l ra mined winding of the thread on the rbobbins f f iproduction 'and'thread sizes, and.by gvirtue oi accordingito :the;desired rnumbemiofathreads per pparenficomplexconstruction and non-positive urfece ineh; uniformly-throughout :.the winding driyingor operatingconnections it has been found process andaexpeditiouslyysettablea to .vary-.- the impossible to effect a thread winding spindle rate :'-.a.n mlber [oiz strandsmen :inchijinaaccordance with oflmore than approximately 300 R. 'P. M. topro- 3 particuiar..operating%requirements 'las desired :ducea productionirate suflicient tor'emcientopers :4 Iurther;'importantaobject of this invention is ation and-at the same time produce a satisfactory lie ipx oi SiOnoi means'fonzcontrolling and 'altergproduct andwithoutthread breakage, especially in'g;t he;flflow ;of the. filamentyarn iirom the sp'in- =as-to the finer textured yarns, and it was to'overn t0;cOmDens'ate.-for variationsrinthesurface #1 11 1 and v e-a s mplifi mim o 'th j n,1th g'p igifl -mgxth gcoxnpact structural arrangementincluding a'posi- 'buildinggllp 'processv. and i-to' maintain a uniform En ive d nsc n ec on trom. th main drive shaf auge"threadg'atgmaxirnum'productionrate. to the winding spindles includin unique bobbin j i t p a 'fibjet ofthis inven- :1 carr ase untin and driving means,vcooperat- 1 tioni'iszthe provisioniotaazrhyon' spinning machine ing; pump andspinneret structures, thread bobbin embodyingyksimplifiedpand positive-:dflvmggnd, 'windingzmeans the construction and interrela-' 0 :thread {windinggmechanism adapted to greatly U ionship or parts being such as to effect the flowoi increase -thel*-.-R. ;;P. 'M. 013*thev-imbbins or winding" wsynthetic zmaterial from the spinneretautomatiispindlesztolmaterially and deflnitelyincrease' the YwY 'i fi' i the-Winding thread productionr and" wherein the construction 1- :SDeedi of; .the -MbObbimand such gconstruction andioperation 1,013 the pump: and spinnerets is such 7 adapted amt-188 135!" ncrea th p ed of; the *5 as to;increaseith'e-volume'of the thread product in threadwindinsspindles to 400 R.:P,. M. and even, ;accordance ipwith "the 'increa'sedw-spindles thread a O thfl i wi houtafl tinzthe un fo ause 01' I 5 winding-speed; and: at thei'sameftime maintain a. l h hii yan L OW e thread at g'pl dete thread "gauze :881Tt0a6fi8btran-uniform in d m fl-Up linear inchxper predetermined 50; itinegtliament'iyamat anincreasedmachineoutput 5 t m i w t atLdesi n d-v th rayon or. other rate;- A ,.-synthetic \materiahproducingmachineriormingth-these and othernzo a- 64 e t nion the st-s fi i -5;- v 1 ig. "l. is;a section onthe line 1-1 of Fig.6. Fig. isa section on the line 8-8 of Fig.6. 1

cts in viewgwh'ich will hesubie tinmtt 0.11 11 8 invention. tbecomelapparent-as-the description. proceeds-the A In the-illustrated embodiment; characterizing invention resides;iniithe construction,-i combina- 1 this inifentionv there is shown a'supporti g rame tion andai'rangement ,oti-parts hereinaiter more @Muctmedcommising smtably connected frame sections such as spaced standards I, 2, and 3, crossbeams 4, 5, and 6, and brace beams I suitably connected to the crossbeams 5 and standards I and 3.

It is to be understood that the standards and beams may be increased or decreased and their arrangement varied according to the particular machine desired. I

A supporting platform structure 8 suitably connected to crossbeam 4 at one end of, the frame adapted to support motor 8 and connecting said motor and main drive shaft I8 is reduction gearing H, said shaft [8 being journalled in bearing supports suitably mounted on crossbeam 6 connected by reduction gearing I2 with spindle driving shaft l3 supported by suitable mountings connected to standards 3 and which extends the full length of the machine. Mounted on said rod I3 at spaced intervals throughout its length are spur gears l4 adapted to mesh with complemental worm gearelements l5 keyed orotherwise suitablysecured to the ends of the respective spindles l6 extending at right angles to shaft I 3 suitably journalled through crossbeam 6, as will be well understood. Mounted on the opposite ends of the respective spindles I 6 are friction drive wheels l1. Each of these wheels is adapted to frictionally rotate a respective spindle on which the thread is wound and which mechanism will hereinafter be described in detail. 7

Mounted on crossbeams 4 journalled in-bearings suitably connected thereto is a cone pulley drive shaft [8. One end of said shaft is 'conto gearing I8 is divided and connected by clutch mechanism 2| controlled by clutch handle 22 pivotally connected to bracket 23 suitably mounted on standard 2. Mounted on the free end of shaft I8 is gear 24 and also mounted thereon central of its length is reversing handle 25 terminating at one end in hand grip 26'and having mounted at its upper end pinion gear 21 adapted to mesh with screw rod gear 28'and with gear 24 to efiect driving connection between said gears. Angularly positioned with respect to gear 28 and meshing therewith is reversing-gear 28 mounted on stub shaft 38 and also mounted on said shaft 38 adjacent gear -28 is a smaller gear 3| which when handle 25 is moved to engage pinion gear 2! with said gear 3| the screw 32 on the end of which is mounted gear 28 is driven in a direction reverse to the direction it is driven when gear 29 is only in mesh with gear 28, as'will hereinafter more fully appear. I

It is to be understood that gear screw rod 32 is formed with threads 33 and is threadedly engageable in gear 28, said gear 28 has one edge extending in the slotted surface of guide block 34 mounted on standard 2 so that rotation of gear 28 effects longitudinal movement'of screw rod 32 in one direction and when reversed in the opposite direction, therefore causing intermittent reciprocation ofsaid rod as and for a purpose directly more fully appearing. The end of rod 32 opposite to gear 28 is formed with a'block member 35 and is formed with a pair of vertically disposed rollers 36 adapted to engagethe opposite edges of belt 31 adapted to travel over cones 28 and 38 50 that the reciprocating movement of rod 32 will cause shifting of belt 31 to increase or decrease the speed of the driven cone pulley 38 and the devices operated by it as hereinafter described.'

In alignment with cone pulley 28 is a cone pulley 38 mounted on shaft 39 which has one end journalled in supporting bracket 48 suitably secured to standard 2 and at its other end in bearing 4| suitably connected to crossbeam 6. Mounted on shaft 38 adjacent bearing, is gear 42 adapted to mesh with-gear 43 mounted on shaft 44 suitably journalled in bearing 45 similar to' bearing-4i and mounted on the free end of shaft 44 is driving disc 46. A driving rod 41 is pivoted as at 48 to disc 46 and the other end is pivotally connected as at 49, between the ends of the twin segmental bars 58, the upper ends of said bars 51 being free.

Slidably mounted between said bars 58 is slide block 52 with its flanged edges 53 engaging opposite edges of said bars and pivotally connectedto saidblock and extending therethrough is a transmission reach rod 54 pivoted at one end as at 55 to the lower end of the lead and lap lever 56 keyed or otherwise connected intermediate its length to shaft 51 journalled in supporting blocks 58bolted or otherwise suitably secured to standards 2. The upper end of lap lever 56 is pivoted to'one end of link 59, the other end of link 59 is pivotally connected to lug 68 suitably secured to thread guide reciprocating'rod 6| mounted in vertical parallelism with spindle 6 between pairs of spaced circumferential grooved rollers 62 rotatably mounted on brackets 63 bolted or otherwise suitably. secured to crossbeam 6'and with one end having a hook or thread guide 64 which is adapted to reversibly wind thread 65'0ver bobbin or spool 66 as it is drawn from the chemical bath tank 61, as will directly more fully appear.

Since the driving connection from disc 46 to lap lever 56, as shown in Fig. 3,- effects limited rotation or rocking of shaft 51, the drive-for the other lead and lap'levers, as shown in Fig. 2, can

be direct from said shaft 51 thereby eliminating the use of the disc, as shown in Fig. 3. It is to be understood, of course, that the direct disc drive ,may, be employed with each of said levers 56,-if

desired.

The free end of transmission reach rod 54 extends beyond slide block 52 and is formed with reduced rod portion 68 and slidably mounted 7 thereon is block 69 formed with an upstanding earJO, to which is pivotally connected thelower end of threaded lift rod 'H, the upper threaded portion of which is adapted to threadedly engage in the threaded split nut 12 formed at its upper end with bevel head 13 and each of the split sections 14 are formed with an outwardly projecting lateral lu'g l5 pivotally mounted between the ears 16 formed at the lower edge of hub portion 11 of ratchet wheel 18. on'opposite sides of bore 19. Mounted on'split nut 12 are cup washers 80 and cup sleeve washer 8| adapted to form seats for spiral spring 82 also mounted on said'nut. The sleeve washer 8| is internally beveled as at 83 at its lower end to receive the complemental bevel head 13 which also constitutes a stop for said sleeve. The-complemental meeting surfaces of the sections 14 slightly taper outwardly towards their upper end so that when force is applied to sleeve 8! in spring compressing direction the sections 14 will expand permitting Mounted on hub portion' 11 is a plate 81 elongated at one side as at 88 on which is mounted.

4 V a fall to their original low-orlong stroke position, i

' ,fpermit' -rocking-or' reciprocating movement of said-ratchet wheelflin a manner and for a pur- [posedirectly-appearing; Secured to frame member 3 is: apaw1 yoke,.;plate 01 secured by bolts or intany suitable manner to frame member 3 andformed ,on its undersurface with spring control pawls 96 projecting yin ioppositef directions and so formed as to-engage teeth 80 andeffect rotation of said ratchet :wheel when same is ,rocked or reciprocated in a manner hereinafter i morefully-described. Lap hanger SO-extends between yoke arms 85 and is pivotally' connected thereto by pin I00. The lower :end of lap hanger 90 is 'pivotedat its lower end to, bars 50 by pivot .pin 52', its upper endbeingpivotally'connected r to pin- 06 by connection I02. Stopelement I03 engag'esarm 66 and maintains-said arm and yoke I in: normal reciprocating position.v l Mounted on golift rod use threaded adjustable collar ll' having a set screw 86. Said collar isadapted to v be setfas desired to limit the-upward movement .j-of lift rod II and returnsaid rod and connected 7 xparts'to their initial positions when the bobbin r nut I2-to. effect elevation of lift rod II sufllciently to bring collar -L'II' into, engagement with; yoke I, .arms 85 and as lift rod "II' moves upwardly yoke I arms 05'are elevated compressing spring 62 thus I isfull. When ratchetwheel "has rotated split loosening nut 12 and permitting lift rod 'llv with blocks- 69 and 52 with their connected parts to 5 as will be hereinafter morefully explained;

I 'Itwill thus be seen that disc wheel 46 through lead and lap' lever 56 effects. reciprocation of thread guide rod' 6| for winding thethread on g'th bobbin and such reciprocating parts including blockj52"upwardly with respect to segment .bar 50 thereby shortening/the stroke of' lap lever -56 and of arm 61 to -taper the builtup yarn body 1 on bobbin :or spool 66 as will hereinafter be more fully explained.

Corningback'now pulley 38, 'it will beseen that mountedon said shaft spaced from the large end'of said coneipulg leyI-Lis apulley 101" sprocket wheel I04 connected by beltor chain I05 with drivewheel I06 mounted on pump drive shaft I01 journalled in supporting bracket I08- andvconnectedto pump I which is connected by conduit I I0 with a source of thread {I09 is connected by conduit or pipe III withthe enlarged end of-spinneret II2 mounted within tlon orliqu id II3,' I a v o ltwill be observed that the drivingsconnection I ju'st described sher; 39 is controlled by the.

; reversing mechanism in connection with' coact- I lnfs'pinion 21 and ha ndle 25 and through the in I 4 #strumentality of screw 32 connected to beltllto gradually increase .the'volume of flow of the synthetic material through the pump and spinneret 15 in accordance with theincreased travel speed of segmentbar 50, transmission reach rod 64 and ingthe split nut assembly also lifts rod II mova drive th t "39 or case forming material supplynot shown. [Said pump chemical tank 61 containingthechemic'al solu- I v I 3 the'thread, 65 as it builds up on bobbin 66 and the travel of reciprocating thread guide 6| owing to itsshortened stroke and increased reciprocating speed is likewise synchronously controlled inunison' therewith. When the bobbin is fully wound, handle 25 is moved to change the reversing mechanism whichquickly shifts belt 31 back to its, initial'position as the vacant bobbin. is moved to active or thread receiving position androtated at its proper initial speed as are alsothe thread distributing andpump means. With furtherreference toscrew rod 32 it will be noted that same may be provided with grooves 32 at opposite ends of the threaded portion so thatin.

the event the reversing mechanism should not be operated immediately the rod reaches the limit of its movement in either direction the belt 31 couldcontinue to run without damage to the threador connected parts.. p o I g It willbe noted that suitably mounted directly below each of the spindles I6 is a rotatable disc spool or bobbin carriage II4 having mounted circumferentially thereof a trio of equi-spaced spool or bobbin shafts, I I journalled in said disc andon one end of the respective shafts is suitably and detachably mounted a respective spo'ol or bobbin 66 and on the opposite ends of said shafts keyed or otherwise suitably secured thereto isa friction drive wheel 6 having a grooved surface II! to receive and frictionally engage the complementally formed surface II6 of friction drive; wheel II when carriage I I4 is rotated to bring a respectivewheel II6 into frictional engagement with wheel I! to efiectrotation of the bobbin' or spool 66 as will. be apparent It has been found expedient to vary'the driving speed of wheel" II6'to effect variation in the v spindle wind of the number of threads perlinear inch per second, and which may be accomplished by forming wheels H6 in two complemental sec tions H9 and I connected by screws I2I (only one of which is shown) extending through section I20 and threadedly engageable in opening I22 formed in section IIO.

Operation of screw I2Iimoves said sections to widenor narrow groove III. Shaft II5 of bobbin 66 is 'journalled in bearings I23 slidably mounted in said disc carriage II4 and bracket arm I24 suitably carriedthereby so that wheel I I6 willbe maintained in engagement with wheel H by springs I25 irrespective of whether the sections H9 and I20are closelyvconnected or separated since the relative movement of these sections with respect to each other and the coacting surface of wheel II'constitutes a variable speed drive for bobbin 66.] w w p w v While the operation of the device would seem "to behclear from the above description; it might be wellto further state that power is transmitted from the motor to main; drive shaft I0 and through gearing l2 tomain spindledrive shaft I3 which operates spindles I6 and the friction drive wheels I! mounted thereon ata constant speed.'

Wheels I'I engage drive wheels H6, and through spindles II5 rotate bobbins 66 when the respectivebobbins :are brought into operative thread winding position. above stated each of the bobbins 66 normallyrotatenat a constant speed' except when varied byoperation'of screw I2I effecting relative adjustment of 'thesheave sections H0 and: I20 of wheel -H6 to vary the {number of threads-wound on said bobbin .per linear inch per second, as hereinbefore explained.

Main drive shaft I0 through reduction gearing l9 also drives shaft I! on which is mounted cone pulley 20 at a constant speed, and shiftable belt 3! connecting cones 20- and 38 drives shaft 39. One end of shaft 39 is connected to disc 46 which is adapted to operate thread distributing rod 8| through the instrumentality of drive rod 41, segmental bar 50, slide block 52, transmission rod 54, lead and'lap lever 56 and lts*connections to rod GI, and from the drivinglead and lap lever 56 through shaft 51' to theother levers 56 and their respective distributing rods 6| as will be well understood.

As the thread builds up on a respective bobbin 66 its winding speed is increased and the distributing stroke decreased, which is compensated for as follows: reciprocation of transmission rod "54 effects relative movement of lap hanger 99,

yoke arms 85 and ratchet wheel structure 18 connected to split'nu't 12 threadedly connected to'lift rod 1| attached to portion 68 of transmission reach rod 54, and such rocking or reciprocating motion of ratchet wheel 18 effects rotationof said wheel by pawls 88 and which rotates split nut 12 to gradually lift transmission rod 54 and as slide block52 carried by said rod moves upwardly between segment bars 50 the distributing stroke or movement'of arm, SI and hook 64 carrying thread 65 is shortened to taper the'ends of the built up thread on bobbin 66 as will be apparent.

thread 55 is wound on bobbin 68, collar H carried by. lift rod ll engages yoke arms 85 compressing spring 82 spreading split nut 12 and permitting said rod and connected parts to drop back to their initial long stroke position as in the first instance.

Shaft. also operates pump I09 to deliver the pulp or other liquidthrough conduits H0 and 'II I to spinneret H2 from which the'pulp substance is forced in the form 'of multifllament speed of shaft 39., It is thereforeobvious that as the driving speed of shaft 39 is increased, the volume of threadvforming material from spinneret H2 to the bobbin and the action of the thread distributing means also operated; from shaft 38 will be synchronously advanced in direct proportion to the increased winding speed of the thread during the building up process, and when the bobbin is filled the movement of handle 25 reverses the direction of travel of rod 32, and

belt 31 is rapidly shifted back to itsinitial position, and simultaneously the lift rod mechanism 1| returns the distributing rod operating mechanism to its'initial or long stroke position. It is therefore apparent that synchronous control of the pump and distributing means is effected in such a manner that a high thread winding speed may be obtained to greatly increase the thread output without breakage ofv the thread or variation in thread gauge. i

, When the spool or bobbin is full, rotation of carriage H4 instantly moves a vacant spool 56 to thread winding position by bringing its respective wheel H6 into driving engagement with spindle friction wheel II. If his desired to When a predetermined amount of.

change the number of threads perzlinear inch per time interval as the thread is wound on spool 66 it is only necessary to operate sheave sections H8 and I20 of wheel H6 to vary the spindle speed of said bobbin, as will be clear without further discussion. 1 v

The operation of clutch handle 22 throws out or brings into operation the pump, thread distributing, and cone variable speed control mechanisms, as desired. It is thought the operation will be sufficiently clear from the above to render further detailed explanation unnecessary.

From the foregoing it will be apparent that I have designed a rayon spinning machine capable of increasing the thread production and operating the thread windingand distributing mechanisms at speeds commensurate with such rate of production andenabling. a spindle winding speed beyond that heretofore accomplished without effecting breakage ofthe thread and causing irregular thread gauge, and at the same time also capable of varying the number of threads wound on the bobbin per linear inch persecond without aifectingthe constant-speed of the spindle,

said machine being of simplified construction,

manufacturable at a reasonable cost, and efficient for the purposes intended. I 7

Although in practice I have found that the form of my invention illustrated in the accompanying' drawings and referred to in the above description as the preferred embodiment is the most efiicient and practical; yet realizing the conditions concurrent with the adoption of my invention will necessarily vary, I desire to emphasize that various minor changes in details of construction, proportion and arrangement of :parts, may be resorted to within the scope of the appended'claims'without departing from or sacrificing any of the principles of this invention. a

- Having thus described my invention, what I desire protected by Letters Patent is'as set forth in the following claims:

l. A rayon spinning machine comprising -means for forming and winding a thread, said means including means for winding the same unit length of thread per layer wound irrespective of the increased diameter of the built-up thread and comprising a thread winding spindle. means for driving the spindle'at a predetermined constant speed, thread distributing means associated with said spindle, and means co-acting with said spindle driving means for automatically increasing the output of the thread forming means and automatically controlling the stroke of the distributing means in proportion to the increase in winding speed of the thread during the winding process.

2. A rayon spinning machine comprising means for forming a rayonthread, said means including a spinneret, and means for winding the same unit length of thread per layer wound irrespective of the increased diameter of the built-up thread,

'saidmeans comprising means for delivering the thread forming material to the spinneret, a

thread winding spindle,means for driving said spindle, thread distributing means associated with said spindle and means'for automatically increasing the thread forming rate of said spinneret and relatively increasing the speed and shortening the stroke of said distributing means in proportion to the increase in the winding speed of the thread during its buildingup process.

3.A spinningmachine comprising means for forming and winding the same unit length of per layer wound irrespective of meant- 'er es e em e oi t e b ltig nre da spindle, speed. in excess. or three" hundred" revo-' I uflo sir rz i w msnasm mm b e 5'1 'ongwhich thread is'wound Idri'vn'bythe spindle, I

ineansri'oridriving said'spindle, a thread distrib-lf I I I I I reciprocatory" distributing bar, means for autoutingme'ans,means connected to said first men utingmeans, said means' including a distributing [10,lfba'n-a pivoted lever connected to theIbar, and means-tor automatically changing the stroke or thdpivoted lever and dist1"ibuting'-bar, and inproportion to the increasefin winding speed of thethread during its building up process.=;-

4.; A-rayon spinning machine ,comp'risingmeans gforwindingthe s'ameunit'lengthoi thread per gilayer-wound irrespectiveot the increased diam- ,eteriofythe built-up thread, and comprising a iiveryqmea'ns and speedof the distributing means in-iproportion to the increase in winding speed l said spool and-simultaneously ailectingshorten- Iing of'the stroke of said di stribut ingmeansand means'jin connection withsaiddistributing means ling elements to theirfinitial long stroke posi-' a tions atthe completion-t the winding operation 1; its maximumstrokeat the beginning 'of the'wind iingoper'ation." ,1 j 1 a 1 j; 5'.;A rayonyspinning machine comprising a *bobbin,' abobbin drive, thread iorming means, a

, i'or windingthe;sameunit length of thread per layerwound' irrespective of theincreased diam- "anoewith the thread winding speed, said means wibar,;a pair of'segmental bars, means for effectand block .for'controlling the reciprocating movejment of said distributing bar,and means for 'automaticallyincreasing the speed at which the being operatively connected to the bobbin drive. 6, A rayon spinning machine comprising a bobbin, abobbin drive, thread forming means,-a mechanismi'or distributing the thread as formed reciprocatory distributing bar, means for autoticnaranvmg means, {or operating said distrib creasing thespeed of'said distributing means and r i ioutput oi; the thread forming means directly in .thecompletion of the thread winding process, and means for automatically increasing the speed for winding athread, saidmeans includingmeans' s'pindle, aarotatable spool ,on which thread is. wound,a distributing meansassociated with said spindle, thread delivery a means, and means for automatically increasing'the output or the dea of ttnaithread during its building upiprocess'on,

for automatically returning-the stroke controlwhereby said distributing means willoperate at mechanism for distributingthe threadas formed on the'bobbin,'said mechanism including means eter otthe built-up thread, and comprising a re- .ciprojcatory distributing bar, me'ans for 'automatically varying the stroke of the bar in accord- -in'cludin'g atransmission rod and distributing ing-reciprocation oi saidtbars, a slidable block; a'ssociated with said'bars and transmissionrod,- and,means associated with said transmission rod,

[thread-is formed in direct ratio tothe thread winding speed of the bobbimlthe thread distrib 'uting vrn' e chanism and the thread forming means ,onlthebobbin, said mechanism including means m windingithe same unit length of. thread per layerwound irrespectiveof the increased diameterz/oi' thebuilt-upthread', and comprising a- -m'atically shortening the stroke and increasing", thei reciprocating'speed of the bar in accordance :ing;mechanism and, thethread forming means being operatively connected to the bobbin drive.

- :mechanisinior distributing the thread and'wind- I j, ing the same unit -length of thread per layer wound irrespective oI the-inc'reased diameter or the buiIt lip thread, said mechanism including a matically sus ains; the stroke and increasing the'reciprocating speed of the bar in accordance with the thread winding speed and during the threadwinding process, and means in connectionwith said thread distributing mechanism for automatically returning the stroke controlling elements to their initial long stroke positions at at. whichthe thread is formed in direct ratio to the thread winding speed of the bobbin, the

bobbin drive..

8. In a rayon machine, an automatic thread distributing control mechanism for distributing 'j thread distributing mechanism and the thread forming means beingoperatively connected to-the the thread as formed on the bobbin, said control mechanism including means for winding the same unit length of thread per layer wound irrespective of the increased diameter of the builtup thread and comprising a drive, a reciprocatory distributing bar, a pivoted lever connected to the bar and means for automatically changing the stroke of said lever and bar, said means being automatically operable to restore said bar to its initial stroke movement when the thread build- ;ing up process on said bobbin has reached a predetermined point. I

19. In a rayon machine, an automatic thread distributing control mechanism for distributing the thread as formed on the bobbin, said control mechanism including means for winding the mediate means and automatically, operable to return the stroke controlling elements to their :initial long stroke positions upon completion of the bobbin winding operation.

10. A rayon machine, an automaticthread distributing control mechanism for distributing the thread as formedon the bobbin, said control mechanism including means for winding the same unit length of thread per layer wound irrespective oi the increased diameter 01 the built-up thread and comprising a drive, a reciprocatory distributing bar, a pivoted lever connected to the bar, and means intermediate the drive and pivoted lever including a transmission rod means and-means in connection with said rod for automatically changing the aro between the transmission rod andlever to shorten the stroke of said transmission bar, and means in connection with said transmission rod to automatically retum'jsaid 'rod to its initial long stroke operating position upon completion oi! the thread winding operation. I I

.11. In a rayon machine, a bobbin assembly wherein a trio of bobbins may be selectively brought into contact with a common drive,'comprising a triction drive, means in connection with the respective bobbins to' engage the friction drive, and means in connection with the bobbins mi varying the speed or selected bobbin with respectto the speed of said friction drive means.

12.A method of forming and winding rayon threads consisting in forming a. thread, winding 5 a thread, and distributing the thread as wound,

fonning' in a manner to effectwinding the same unit length of thread per layer wound irrespective of the increased diameter of the built-up thread -and co-ordinating t e winding, distributing, and

JOHN B. DOVE.

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