US2740589A

US2740589A - Winding machine

Info

Publication number: US2740589A
Application number: US224491A
Authority: US
Inventors: John V Keith
Original assignee: Leesona Corp
Current assignee: Leesona Corp
Priority date: 1951-05-04
Filing date: 1951-05-04
Publication date: 1956-04-03
Anticipated expiration: 1973-04-03

Description

April 3, 1956 .1. v. KEITH 2,740,589

WINDING MACHINE Filed May 4, 1951 7 Sheets-sheet l i mc 2 JOHN IKKE/77V f E 1N VEN TOR.

ATTORNEY April 3, 1956 .1. v. KEITH 2,740,589

WINDING MACHINE Filed May 4, 1951 '7 Sheets-Sheet 2 /50 /25 2&7 2 376 5 5/8 g E l INVENTOR. JOHN IKKE/7W WND@ ArroRm/EV April 3, 1956 J. v. KEITH 2,740,589

WINDING MACHINE Filed May 4, 1951 '7 Sheets-Sheet 3 F39 i I INVENTOR.

d' bww/00.59%;

TTOENEV April 3, 1956 J. v. KEITH 2,740,539

WINDING MACHINE Filed May 4, 1951 7 Sheets-Sheet 4 IN1/EN TOR. (/off/V K/(g/ TH www ,47- TOR/VE April 3, 1956 J. v. KEITH 2,740,589

wINDING MACHINE Filed May 4, 1951 '7V Sheets-Sheet 6 INVENTOR. dof/N 1./ KE/ 711-/ www April 3, 1956 J. v. KEITH 2,740,589

WINDING MACHINE Filed May 4, 1951 7 Sheets-Sheet 7 INVENToR. dof/N 1./ KE/r/-f MKM ATTORNEY winding machine capable of winding yarn WINDlNG-MACHINE .John V. Keith, .'Warwick, R. 1., assigner-to Universal `Winding Co., Cranston, R.` I., a corporation of Massachusetts Application May 4, 195,1,Serial'-No.=224,491

A14: Claims. i (Cl.v 242-18) The 'present invention lrelates to winding machines and .more particularly relatesto axhigh speed winding-ima- `throughout the winding cycle.

Another object ofthe present invention is .to provide a winding machine wherein the speed of operation ofl the -machine is controlled ,by'the maximum operating speed fof itstraversing means, duringthe rst part of awinding cycle, and the speed of operation is controlled by'the strength of the yarn being wound dnringthe latter part of the windingcycle.

Anotherobject of the present invention /is toprovide a winding machine adapted to operate at a substantially constant spindle speed during the lrst part of the winding cycle and to operate at a substantially constant yarnwspeed during the .latter part of the winding cycle.

Another object of the present invention is vttt provide a winding machine having a substantially lixed `thread lineV throughout the winding cycle.

Another object of the present invention is toprovide a winding machine having a reciprocatingyarn guide and wherein saidyarn guide is self-threading and` of very small mass.

vAnother object of thepresent invention is to provide a winding machine wherein the reciprocating yarn guide is v mounted to reduce vibration .to a minimnm.

`winding machine having means forpositively controlling the pressure with which the yarn being woundisapplied to the package.

Another object of the present invention is to provide a with. controlled tension and pressure.

`,Another object of the present inventionis top rovide a -windingmachine having automatically resettable means forcontrolling the pressure with whichthe yarnibeing wound is applied tothe package.

Another objectof the present invention is to provide a winding` machine having a clutchmember adapted to connect and disconnect the winding spindleto aM source `oi' power and which is energized by s aid sourceof power.

Another object ofthe present invention is vto provide a self-cleaning yarn tensioning mechanism.

Another object ofthe present invention is to provide a `yarn'ten'sioning mechanism having a movablef'element United States Patent Z adapted to discharge accumulations ofioreign matter therefrom.

Anotherobject of the present invention is to provide a yarn tensioning mechanism having a rotating element adapted to discharge: foreign matter therefrom.

Another object-of the. present invention is to `provide a winding machine having a self-cleaning yarn tensioning mechanism driven by said ywinding machine.

Another object of the present invention is to provide a 4winding.machine adapted to,actnate a. self-cleaning yarn tensioning, mechanism. Y

Other objects of thelinvention will inlp'art be obvious and -will in part .appearhereinaften :The invention` accordingly comprises the apparatus possessing ihe construction, combination of elements and arrangement ot parts which i arel exempliiied' v,in the f,0l-

1 lowinadtalsd. dislosure. and the .Scope ofthe. application of which will be indicated intheclaitns.

RFS` @fuller understanding 0f thevnature andobiectsf the invention, reference shouldbehad to the following detailed #description taken in connection with Ythe accompanyiag drwings wherein:

" Figure, 1I is`a,nelevation illustrating a .Winding .machine, having three Winding units thereon, incorporating .thepresentinyrmigns 'Eig.2 is a planviewofuoneof thewinding units'. of Fig- 1;

4'Fig.,3 is an enlarged elevation`.,of `,onepof thawinding units;

ligAiS a ,View4 .Similar to Fig- 3.b.ut lShow.s.he:Wint-lilla nnitiniits inoperative position;

'Iigf is a sectional view taken onthelineof Fie 5;

i Fig.. 7 isv awfragrnentary Aelevational yview,,witlrplarts broken away showing details of the startingf-leyer;

`rig., Sis a fragmentary view with partsfbroken. away showingthe clutChrneChaniSm;

ig. 9Ais aiviewsimilar to Fig. 8 butshowingthe clutch ...in discngasedpnsition;

Fig.. l0 is asectional view ofthe clutch; Fig.AA lliis @fragmentary view illustrating 4,the `mechal. nsm; for-moving thewinding Spindle away fromthelyarn 4`-gi iideas. `the ,packageibeing wound increases` in diameter;

Fig.12,isan. exploded view of `the cam and cam oper- .ating means 0f .thesspiadle moving mechanism; 4

Fig., 13 is;a sideelevationof thertensi'on means and showing thefltension means yin .its inoperative `ypOSiiOn; .Fig.14isa lview .sinflilar to Fig.v llbut showingvthe tensionrneans.inoperative position; and l I y, Eig. 15.is alview of the other side of the tensionmehanism andshowingsaid mechanism in operative4 position.

General description-The present invention. comprises a.,..winding (machine for winding, yarnwitha universal, precision or .V=wind. In the. usual typeof .machines Lrior, ,winding .yarnA ,with a universal, precisionvsor AV-.w-ind l,tiie winding Z spindle is4 drivenV positively. at a` constant rate `oi.,speled to rotate the package andftheyarnfis traversed lengthwise kof `.theispindle with `the rate of 4draftv of; Ithe yarn Aincreasing progressively .as the.v vpackage i increases. in diameter. In this vtype of Winding` machinefthetravers- Ying thIQadrgnide-.is reciprocated at uniform rate, tl1at is, incertainratio to-thelspeed ofthe winding spindleA except y,foraslight increase therein to give an increment lofumo ,'tionto theV guide whereby it will lay the yarnrin helical coils with each coil in closely adjacent relation Ato the lpreviously!wound coil. With this type of precision wind- 'wingthe package is built np withjthe turnslor coils ina1l foff-theflayers extending from endto end of the package in aapredetermined numbersof:convolutions and-crossing each other with a symmetrical V-shaped pattern on the surface of the package.

The maximum speed at which yarn can be wound by any winding machine is limited by the speed at which it can be delivered by the supply package from which the yarn is being wound. Attempts to wind in excess of the speed at which the yarn is freely delivered results in damaged yarn and a large number of broken ends. ln the usual type of precision winding machine the speed of rotation of the winding spindle is limited to a speed which will not impart a lineal speed to the yarn being wound, at the completion of the winding cycle when the package of yarn is at its maximum diameter, which is in excess of the lineal speed at which the yarn can be safely delivered from the yarn supply. As a result, the usual type of precision winding machine operates during .practically all of its winding cycle at a rate slower than the maximum speed possible. For example, if the machine is winding yarn from cakes capable of delivering the yarn at a speed of approximately six hundred yards per minute, the winding spindle would be set to rotate' at a speed which would wind the yarn at approximately six hundred yards per minute when the package being wound reaches its maximum diameter. If the package being wound is to be six inches in diameter when it is finished this means that the winding spindle will wind the yarn at the start of the package at about two hundred yards per minute.

The present invention comprises a winding machine for winding precision wound packages of yarn at the highest possible winding speed. The winding machine of the present invention includes a plurality of similar winding units driven by a common source of power, each winding unit being capable of winding independently of the others to wind a precision wound package. Each winding unit includes a rotatable spindle adapted to receive and hold a yarn receiving member or core, and a rotatable carn adapted to reciprocate a yarn guide longitudinally of the yarn receiving member or core a predetermined number of times for each revolution of the winding spindle.

When the winding cycle of a precision Winding machine starts, the speed at which the windingspindle can be rotated is definitely limited by the speed that the cam can be rotated. This is due to the eccentric shape of the cam and the uneven loading placed thereon by the rapid reversal of the mass of the yarn guide which it must reciprocate back and forth thereby deiinitely limiting the speed at which it is safe and practical to rotate the cam. As the winding cycle progresses and the package of yarn being wound increases in diameter, the lineal speed of the yarn being wound increases due to the increase in package diameter. At some point in the winding cycle the maximum speed at which the yarn can be wound, due to the above mentioned limitations on the v speed at which the yarn can be delivered by the yarn Supply, will be attained and if the winding speed increases thereaftenthe yarn will break or be damaged. Therefore the winding machine of the present invention is so constructed that the start of the winding cycle, its speed is the maximum speed at which the yarn traversing cam can operate, and when the package of yarn being wound attains such a size that the yarn is being wound at its maximum practical yarn speed, the speed of rotation of the winding spindle `and the yarn traversing cam is reduced at a predetermined rate to maintain a substantially constant yarn speed.

The yarn traversing mechanism of the winding machine embodying the present invention is fixed with respect to the axis of the winding spindle. That is, the yarn guide does not swing or move away from the axis of the package being wound as said packege increases in diameter but reciprocates along a iixed line. throughout the winding operation. However, the winding spindle is arranged to move away from the yarn traversing mechi its face.

anism as the package being wound grows. Moving the package away from the yarn guide accomplishesthree distinct advantages in the present invention. First, it permits the yarn traversing mechanism, which includes a rapidly reciprocating yarn guide, to be firmly mounted on the apparatus to minimize vibration from the reciproeating parts. Second, it permits a substantially straight thread line from the supply of yarn being wound to the winding spindle and permits maintaining that substantially straight thread line without change throughout the winding cycle. Third, inasmuch as the yarn being wound contacts the yarn guide at the same point and same angle throughout the winding cycle it is possible to employ a self-threading yarn guide having a small mass thereby permitting higher cam'spceds than would be possible if the guide had to be large enough to catch the yarn throughout the range of a changing yarn angle.

A mechanismis provided which is driven by the winding spindle and which is adapted to positively move :the winding spindle away from the yarn guide as the package increases in diameter at a rate substantially equal to the growth of the package to maintain the surface of the package being Wound just out of contact with the yarn guide, or to permit the yarn guide to exert only a predetermined pressure against the package.

The winding machine of the present invention is provided with a magnetic type tension capable of automatic adjustment by the apparatus as the package being wound increases in diameter to provide a differential tension, i. e. a constantly decreasing tension from the start of the winding cycle to its end. The tension mechanism is provided with a self-cleaning pressure plate in the form of a rotatableV disc having a plurality of grooves formed in The disc is constantly rotated at a uniform rate of speed whereby foreign matter carried into the tension applying portion of the mechanism by the yarn are collected in the grooves and carried out of the tension applying portion and discharged before they can accumulate to an extent suiiicient to interfere with the function of the tension.

Winding units-The apparatus of the present invention comprises a plurality of winding units 10 adapted to be mounted on a bed formed from two parallel horizontal bars 12 supportedby legs 14. The apparatus may be double-sided, i. e. have a plurality of winding units on both sides of t'ne bed or table, or can be single-sided as illustrated in Figure l. All of the winding units on a side are driven by a single motor 16. In the event the apparatus is double-sided two motors would be employed, one operating all of the winding units on one side and the second to operate all of the winding units on the other side. A shelf 1S extends longitudinally of the apparatus supported by legs 14 and serves as a support for the supplies of yarn to be wound by the winding units.

Inasmuch as all of the winding units on the winding machine of the present invention are similar, only one such unit will be explained in detail. Each winding unit comprises a rotatable spindle adapted to receive a package core or yarn holder 18 and a traverse mechanism 20 adapted to traverse a strand of yarn longitudinally of the core 18 to wind a package of yarn thereon.

Traverse mechanism 20, Figs. 1, 2, and 3, is carried by a bracket 22 which is secured to the front rail 12 of the `bed or table in such a manner that said traverse mechanism projects forwardly therefrom. The traverse mechanism 20 comprises a housing 24 secured to bracket Z2 by any convenient means which will permit it to be pivoted slightly thereon to make it possible to adjust said traverse mechanism so that it will reciprocate its yarn guide 28 vparallel to the surface of package cores 18 having different tapers. Housing 24 is provided at its front and back lends with journals which serve as bearings for a shaft 26.

Shaft 26 carries a multi-grooved barrel cam, not shown, within said housing 24 and which is connected to and drives yarn guide 2 8 ina manner Well known to those .skilled in'theart. .'Shaft .26 projects-iromthe:zbackiof 'vhousing 24 --and has xedly. secured thereon.. alltoothed -pu'lley-30, Figs.- 2,'-5and6, which'isdriven by' afcogged `-belt'32,I in a manner to be explained more in detail heref-inafter, to rotate shaft. 26 .and the barrel cam 'carried 'thereby to reciprocate yarn guide128 .longitudinally of i package core 18.

The winding spindle comprisesA ak horizontal-".shaftl Irotatably journaled by means of. suitablebearings inthe r frontIand back walls 33 andl 35 respectively of housing 36 -andI adjacent the upper end of housing 36. Housing 36 also-has. a v`side `wall .37. `l-l'ousingiaais mounted for pivotal movement on shaft 3S,.:Which:is-xedlyllattached .to horizontal bars 12, by means of suitable bearings located in the lower endsofwallsBS and 3S to-permit shaft 134 and housingsto swingltowards and away from traverse mechanism about shafti asian axis. A toothed pulley 4G is tixedly mounted .on shaft 34. A'pair '-of-Itoothed:pulleys-.42 and 44 are rotatably.. carried on .shaft`38 by means of a clutch mechanism- 45, Ato.be ex- A '-plained in detail hereinafter. Pulleyff42 -is inalignment with pulley-40 and drivingly connected thereto by=rneans of a cogged belt 46. Pulley 44.isin alignmentwith'one lside ofa double toothed pulley. 48, rotatably carried by stub shaftS whichv is secured-t0 bed or table 12,--and isi` drivingly connected thereto bymeans-of coggedy belt 52. `The-other side of double pulley 4S'is `in alignment. with pulley'i) on shaft 26 and is connected thereto rby cogged w .belt-3210 rotate said shaft 26 and the-barrel camcarried 1 onshaft 3S by means of aclutchmechanism 45. Clutch .mechanism-45, Figs. 5, 8; 9 and 10, compriseslafsleeve 54 rotatably journaled on shaft. Pulleys 442 `and44 w are keyed to sleeve 54 adjacent its right hand lend for ror:tation around shaft 38A with said. sleeve. JA V-pulley 56 is journaled on sleeve54 forrotation thereon kadjacent tov i pulley42 and has. a clutch facing 5S of any. convenient material affixed to its left hand sideso that`the;left side :of pulley 56 is adapted to function as a clutch plate. A Vcooperating clutch plate 60 is carried on sleeve-54 for limited rotational and axial movement thereonbyl means of a hub member 62. Hub member 62 is vprovided on its .'-onazboss': 93. on bracket. 22,-. servesfas a-.stop ffor. linkt 92 .to..1imit the .downward-movementof starting'handlell to a..direction to startrthe winding unitjqbrake i765 isere :'.leased .permitting helical.: Vspring 74110; rotate: 'hub'.member 11.162. in. a; direction.to-.cause radial-.pin '72m cam said hub .'.eand clutch plate G01/,against Clutchfaeing-585of pulley: 56.

vOnce 'clutch plate 60andl clutch facing Sti-engage theretation. of clutch .plate 60f imparted thereto; by .the pulley #56.causesrcam slot 70 to-camnsaidz clutchgplategtightly against clutch- .facing :58.

.f Startingandlstoppng i mechanismr-A startingleyerrSl) is-pivotallymountedon .the right bandend of bracketZZ, Figs.- 3 through =7, by-meanszof.- a.hinge member 82-.to

free send of, Lfshapedactuating arm 84nis vattachedtothe endof brake'r76 is xe'dlyi'attachedfto the rear.bar 12tof f bediorr `table, so that -.downward.movement` .ofistarting han- ,t dle .Sil swings .Ia-shaped .actuatingfarm-84 to release jbrake "76: from outerlange66fof thefclutch mechanism v45fto .permit'said zclutch toengage andfstart the windingmechafnismi. operating. i Upward movement .fof the startinggfhan- :dle` swings L.shaped.actuatingxarm 84.in. a .direction to fdrawsbrake .76.tightly against .the vouter flange 66.of clutch .mechanism tito disengage saidclutch all initheabove'de .1. scribed manner.

.-. Starting :handle 80. is provided adjacent hinge .member f 82L with'an upstandingv'ngerQll; Figs.-4 3, 4'and 7; which is i92,.the .other end of. .link` 92 f is :'pivotallyj. connected.; to z-zbracket;.22.so.-that. link 92 .and upstanding -tinger..9l).form 1 a; toggle; thatsstraightens as. starting handle: 80. is :depressed pivotally connected at itsupper. endtosoneendof aglink to start the-.winding'unit .andwhichfoldswhen said handle -rnoves.upwardly to:stop:;the winding mechanism. Aroller 94 is; provided. betweenv the .endssof link member. 92txand ois `adapted to vbeengaged by a. spindlemoving .can-1,. to@ be i .explainedin detail hereinafter, to permit saidcam 'tozmove tthe winding spindleiaway'from yarn.guide;28zasf.the.1pack .age .being woundzincreasesfiu diameter. 5A` pin 91,. located thereby insure roller 94 beingrlocate'd'injthezfproperrposition. for the successful operationfofsthe spindlemoving end with an annular groove 64. which divides lsaid hub into anlouter flange 66 and 4an innerilange 68. Il Innerflange :.68-.is provided with a helical slot70 which-receives radial pin 72 projecting from the surface of sleeve 54.

.be seen therefore that rotation of clutch plate'. 63 and-hub '62.relative toisleeve 54'will causerradial-pin 72't0 cam clutch plate 60. towards or away from pulleyf 56 and its clutch facing 5S. A helical spring 74 having one offits ends attached to radial pin '72 and its otherend-.engaged in a hole in the base kof annular groove 64-tends to ro- 4tate clutch plate 6l) and hub member62 in a direction to cause radial pin 72 to camsaid clutch plate against the .v clutch facing 58 of pulley 56. -A brake 76 operated by starting handlel 80, to be explained more in detail hereinafter, is locatedA around outer ange66 of hub member 62. Upon the operation of starting handleSl) vin a `direction to stop the operation of the winding unit, brake76 .fisicausedrto engage said outer ange' 66 toIstopthe rotationv of hub 62 and clutch plate 60. Stopping, or applying a braking effect to hub member 62 causes'sleeve '54,' due to its inertia, to rotate relati-Veto hub62'and cam :said hub and clutch .plate 66 away fromthe V-pulleylS and its clutch facing 5S to tpermit .pulley 56 .tozrotate freely onisleeve 54. 1 Whenxstartinghandlellnis moved It will intermediate its ends bymeans'ofstud11-2 torlatchsmem .ber-98 insuch a.mannenthatupward:movement ofsaid cam.. Startinghandle .80 is-springfurged inxanupward or clockwise direction, .f as viewed in'` Figss 3, 4..:.iand'f 7, by means of a helicalspring 96. carriedaby thepivotpins of hinge member 82. f

.A latch member 98, Figs; 3 and 4,'.isspivotallymou11ted intermediate its. ends onzthe. lower edge of. bracketlZZfby rneansofa stndgllltl .and isspring; urged'to'irotateain a Vcounterclockwise direction-by meansof a spring 102.` :The

upper end. oflatch'member .198..isfbent1overttotform a .latch shoulder. 104 adaptedtofengage over a keepenfrnember 106 formed on .the-.back sideofstarting'handlef80fby `the head of stud 108. .Latch shoulder.104;iszofsucent length so that keepermemberf 106;.bears fagainst itst-surface when starting handle .80Y isxinits .uppermostyposition as illustrated in fig.r 4. When startinghandle :-.is:.-.de

pressed to cause clutch, mechanism 45 toengageto start the winding unitkeeper.106. slidesidownwardlyl .along. .the .face of latch shoulder.104..until link 92'engagespin 91 at which time keeper member 106 ypasses below: latchshoulder 104. and spring 1il2frotates. latch member..98 tofmove shoulder 104, from keeper. memberv lnpontthegbreakage-or exhaustion of theyarn beingwound.v .The releasing means comprises anr invertedv Yeshapedrlever i110; pivoted Y..shaped lever, 110 willsrotate saidflatchfmembert 98 Lin :a clockwise 'directionr to move.- latchsshoulden 104zo`sfrom .keepermember `106. Theuppenfarm .114.ol'wshape'd 1ever 110 is provided with an elongated slot 116 which fits loosely over stud S to permit limited pivotal movement of said Y-shaped lever in a manner to be described hereinafter. The uppermost end of upper arm 114 is provided with an arcuate slot 118 adapted to adjustably hold a balancing weight 120. The lower right hand arm 122 of Y- shaped lever 110 is provided with a forwardly extending yarn engaging bar 124 adapted to engage the strand of yard Y being wound on package core 18 to permit said Ystrand of yarn to hold said Y-shaped lever against clock- Fig. 3 or Fig. 4, i. e. the front of wheel 130 is moved downwardly and the back upwardly. The lower left hand arm 126 of lever 110 is located in back of shaft 132; therefore when abutment 128 is engaged by one of the teeth on toothed wheel 130 rotation of said wheel lifts lever 110 to thereby rotate latch member 9S in a clockwise direction to release latch shoulder 104 from keeper member 106. Immediately upon the release of keeper 106 from latch Shoulder 104 starting handle 80 swings upwardly under the inuence of its spring 96 causing stud 108 to move upwardly in elongated slot 116. Elongated slot 116 is so shaped that the upward movement of stud 108 therein swings lever 110 a small amount in a counterclockwise direction to disengage abutment 12S from toothed wheel 130andto hold said abutment thus disengaged.

A depending arm 134 forming a part of a tension controlmechanism and a speed regulating mechanism, to be explained in detail hereinafter, is adjustably mounted on the front of housing 36 adjacent shaft 38. The lower end of depending arm 134 is bent over to form a lug 136 which is adapted to engage the lowermost end 13S of latch mernber 9S to disengage latch shoulder 104 from keeper member 106 when the package being Wound has reached its predetermined desired size.

Pressure control mechanism-Each winding unit is provided with a pressure control mechanism adapted to move the winding spindle and the package being wound thereon'away from yarn guide 28 at a rate substantially equal to the rate at which the yarn builds up on the package to prevent the yarn from being applied to the packageat an excessive pressure and to thereby prevent yarn damage and distortion of said package. The pressure control mechanism comprises a spiral cam 140 carried by housing 36 which is rotated through a predetermined angle of arc for each revolution that the winding spindle makes and which has its periphery in engagement withroller 94 carried by link 92. Spiral cam 140 is rotated by horizontal shaft or spindle 34 by means of a speed reducing system comprising a worm gear 142, Fig. 5, on shaft 34 which meshes with and drives worm wheel 144 iixedly attached to shaft 146. Shaft 146 is suitably journaled in side wall 37 of housing 36 and lprojects therethrough to the outer surface thereof. A crank disk 143 is fixedly secured to the outer end of shaft 146 and is provided with a plurality of threaded holes .1.50 each spaced a different radial distance from the axis of said disk adapted to selectively receive a crank pin. A crank pin 152 is threadedly carried by one of the holes 150 and has connected thereto one end of a connecting rod 154.' The other end of connecting rod 154 is pivotally connected to the tail end of a ratchet 160 lixedly carried by side wall 37 of housing 36. A ratchet wheel 162 is mounted for rotation on stub shaft 160 and.` is superimposed on aim 150 to permit ratchet pawl 156 to engage its teeth. A pinion gear 164 is also carried by stubshaft y160 and is connected to ratchet wheel 162 so that rotation of said ratchet wheel rotates pinion gear 164. A U-shaped friction leaf spring 166 having its solid end attached to side wall 37 contacts the side of ratchet wheel 162 on each side of stub shaft 160 with its other end to apply a frictional drag or braking eiectvto said ratchet wheel to prevent the ratchet wheel moving with pawl 156 and arm 158 as they rock backwardly preparatory to said pawl engaging a dilerent tooth on the ratchet wheel. Pinion gear 164 meshes with and drives gear 16B of a set of speed change

gears comprising gears

168, 170,` 172 and 174.

Gears

168 and 170 rotate together on stub shaft 176 carried by a movable arm 178 adjustably mounted on side wall. 37. `Gears 172 and 174 rotate together on stub shaft 180 also carried by movable arm 178. Gear 172 is in mesh with and is driven by Ygear 170. Gear 174 is in mesh with and drives gear 182. Gear 182 is iixedly attached to the end of shaft 134 which is journaled in side wall 37 of housing 36 and passes therethrough. The inner end of shaft 184 carries worm gear 186. Worm gear 186 is in mesh with and drives worm wheel 188 which is lxedly carried by hollow shaft 190. Hollow shaft 190 passes through the front wall33 of housing 36 and is rotatably journaled in the boss 192 formed thereon. A ratchet wheel 194 is iixedly attached to the forward end of hollow shaft 190 for rotation thereby. VSpiral cam 140 is carried on hollow shaft 190 adjacent ratchet 194 and between it and boss 192 by means of bushing 196 for selective rotation on or with said shaft 190. Cam 140 and ratchet wheel 194 are located adjacent each other and cam 140 is provided :with a pawl198 pivotally mounted thereon by lpin 199 and resiliently urged by means of leaf spring 200= alsorcarried by cam 140, into engagement with the ratchet teeth on ratchet wheel 194 so that rotation of ratchet wheel 194 acting through pawl 198 will rotate cam 140. Inasmuch as the periphery of spiral cam 140 bears against roller 94 rotation of said cam in a counter clockwise direction pivots housing 36 and the winding spindle 34 away from yarn guide 28. By the proper selection of change gear 132 and the proper location of crank pin 152 on crank disk 143 the counterclockwise rotation of cam 140 can be adjusted to such a rate that it will move the winding package away from yarn guide 2S at substantially the same rate that the radius of the package increases. The pressure control mechanism is readily adjustable to conform to the winding of different diameter yarns by changing the position of crank pin 152 and employing a suitable change gear 182.

Ratchet releasing means are provided to permit spiral cam 140 to rotateion hollow shaft 190 in a clockwise direction back to its starting position to bring winding spindle 34 closely adjacent yarn guide 28 to permit the start of a new winding cycle. The cam resetting means comprises a pawl releasing link 202 having a rectangular shaped slot 204 formed in its upper end and a smaller oval slot 206 in its lower end. A threaded rod 208 having a cam surface 210 formed on one end thereof passes through slot 204 in the upper end of latch 202 and extends through hollow shaft 190 to hold said link 202 adjacent the outer face of ratchet wheel 194 for limited radial movement by cam surface 210. Slot 206 in the lower end of link 202 tits over pin 199 which holds pawl 193 on cam 140 to cause link 202 to rotate with cam 140 and adjacent said pawl. The lower end of link 202 is provided with an inwardly turned finger 212 which is adapted to extend across the upper surface of pawl 198. lt will, therefore, be seen that inward movement of threaded rod'20causes cam surface 210 formed thereon to react with slot 204 in link 202 vto move said link radially outwardly. This outward radial movement of link 202 brings nger 212 thereon against the upper surface of pawl 198 to pivot said pawl outwardly against leaf spring 200 to release said pawl from the teeth of :raming-ssa i ratchet"wheel 194. A" helical spring "214 coiled 'about i'boss" 192 "on-housing 36"and havingV one' of its'ends hookedaround'theedge of front wall33 of' saidhousing A36: andits'other end engaging a stud216on cam 140 'returns said cam toits startingposition. An adjustable cam stop member 218'is also `carried-by bushing 196 for vlimited pivotal movement thereon. v'Stop member 218 `comprises an arm having an opening220 formed in one Yend adapted to fit overbushing'196 and having a bent over portion 222 formed on itsv other end to provide an abutmentadapted toV be engaged by arm 224, Figs. 3, 4 and 5, adjustably carried vby housingtL in a manner to be"explained hereinafter, to stop cam 140 ina prede- "terminedposition' with respect to housing 36. A lug J2261is` providedon'the back surface of cam-140 adapted to engagein a'notch'228iin'the edge of stop member 218 tostop' said cam 140'when it has'been returned to its starting position.

AShaft or spindle'34 is provided on its forward end with an expanding mandrel 229 adapted to releasably grip pa'ckage core 1S. A clamping leverI 230 is pivotally `mounted at "the upper forwardend of housing 36 and 'adapted vto cause said mandrel 229 to clamp or release said'core'S in a' manner well known to those skilled in the art, i. e.' pivoting the upper end of lever 230 rearwardly causesl thel lower end of the'lever to swing in a .forward direction wherebyv detent 232 formed thereon reacts against ilanged collar 234 to move said collar forwardly to release package core 18. Pivoting handle 230 "forwardly 'causesdetent 232 to move flange collar 234 rearwardly to clamp the'package core in position. One "end'o'r a link 236,` Fig; 5, is connected by means of a pin t and slot connection to clamping lever'230 above the pivot point of said'leven v4The other-endof link'236 is pivotally connected to 'the'upper end of rod operating lever 238 which projects upwardly through a slot formed in the 'top' of'housing`36. Rod operating lever 238 is pivoted 'intermediate its ends on a stud 2413 located'nside of the upper end of housing 36. The lower end of rod operating'lever 238'is connected to the threaded endo rod'2tl8 by"means 'of' a pair -of nuts 242. 'lt will, therefore, be sseen vthat forward pivotal movement 'of' clamping lever "230will pull llink 236 in a forward direction 'thereby pivoting rod operating lever 238 in al direction to draw rod; 208 into hollow shaft 190. Inward movement ofrod "'208'causes cam `surface 210 formed thereon to force link '202 radially outward to thereby release pawl-19S from theteeth of ratchet wheel 194 to permit the'returnof cam 140 to its starting position. It will also be noted that the forward swinging movement of clamping lever 230actuatesexparidirigman'drel 229 to grip a fresh package core 18. Therefore the actof clamping a fresh-'package core on' mandrel 229 automatically returns cam lttlitoits `starting position. A helical spring 244 is coiled around stud 24@ and has oneV of its ends engaged in ari-opening `formed i1 in housing 36 and its other end caught around the'edge of rod operating lever 23S and functionsupon the release offclamping lever 230 to pivot rod operating lever 238 in acounterclockwise direction, as Viewed in Fig. 5,' tol move cam 210 out of engagement with link 202 to permit pawl.v

198 to again' engage the teeth on ratchet wheel 194i. This movement of lever 238 and rod 23S is permitted'by the lpin and .slot connection of link 236 to clamp lever 230.

The pressure control mechanism functions in the vfollowingmanner. Rotation of shaft or spindle 34 towind yarn Y on package core or yarn holder 1S rotates Worm gearV 142 which inturn rotates worm wheel. 144 and shaft 146. Shaft 146 rotatescrankdisk 148m oscillateratchet Y pawl 156:back and forth by means of connectingirod .'154.',andicrankpin, 152. The amount of oscillation. of ratchet pawl;,1'56 canbe controlled by theproperfselection of the-threaded. hole 150 in which cranky pinx152 is located. Oscillation of ratchet pawl 15G- incrementally i rotates-` ratchet/wheel. 162. in a clockwise:kk direction.; as

vfviewed in Fig. 1.1. 'Rotation of ratchet wheel 1'62 rotates pinion gear-'164'-whi'ch is'meshedwith-and-idrivesgear 168. `Gear '168-' carries and'. 'rotates-*gear'170whiclr is meshed'withand d'rivesgea.'` 172. 'Gear 172'carriesand rotates-gear 1-74. Gear' 174i in turn rotates gearf 182-and 5 with it shaft 184 and worm gear 1&6 carried thereby. v"Wormgear 186' is' mashed with-and rotatesiwormwheel iilllixedly carriedl by'ihollow shaft. .Rotation-:of vhollow-shaft 190 rotates ratchetrwheel 194carriedthereby "and rotation of ratchet wheelf194- acting through'pawl 198 rotates spiral cam`-14tl-to cause lsaidl camto react against roller 94- Itolift- -spindlei laway -from2thread guide 2S. Upon'completion ofithefpackagebeing wound and the lplacing of a newpackagecore'l uponrspindle 234fthe Aoperation of clamping-leverf230 to lock the'new core on' thespindle draws threaded'-irod=28fbackinto hollow shaft 190 causing cam surface Zlormed Vori-said vrod to move -pawl vreleasing-link l202 radiallywoutwardly to release* pawl 195i" from ratchet wheel 194. Upon'tho `release of paw] 198 :fronti the teethfofI-ratchet Iwheel 194 Vspring 2M lrotates spiral cam -f-itiback toiits starting-:posivtion at which point. canr stop ymember 1213 engages adjustable cam armZZ/t to stop said spiral cam.

' Speed and tension control mechanism-As l stated abovetwo -actors limit-the'speed'i at which avpackagerof yarn caribe wound. Atl the startfofl thevwindingcycle the speedlatwhich the yarnv guide traversing cam' can-whe rotated-'determines the maximum speed atwhich winding can take-place. 'Asi the package ybeingwound fincreases in diameter-its peripherall-speedk increasesnntil ai-peripheral speedis obtained which is equal to thefmaximum speedatl whichfthe`v strand ofI yarn beingA wound canvbe v delivered by the yarn supply without incurring damageto "the yarn. The =-apparatus=ot`-y the present'iinventionfin- 'cl-udesa-speed controlling means whichxpermitsithe;'apparatus to operate' at the maximum speed atwhichitsyarn i guide traversing'carn can-safely-z operate untilsuchtime as the-package being-'wound attains afperipheralhspeed substantially equal to the maximum speed-atfwhich the yarn can' be wound.` -"l/herrrthis condition lis'iarrivedl at 40.41y speed control mechanism starts to Operate tol-reduce #the speed-of rotation of shaftv or. spinrlleiltfatsuch` avr'ate 'thatthe peripheral or surface speedoffthefpackage' being woundl-wiil remain constant. rthisl arrangement-permits the'windingmachine offthepresent invention to operate at-:the highestrpossible speed atv-all times. 'A motor-16 carriediby a bracket 2l6fatt-ached'to legs" 'drives all'of "the winding unitsfon one side :oflthe winding machine.

-Motor 1.6 drivesbelt 248,v Fig; l; which'irrturn drives atplurali-ty'of puleys25tll=-which are located one under each winding unitA andsupport-edby suitable bearings carriedA by alhorizontal rail-252 mounted' onzlegsf 14. "#Belt ZS'S maintained` in driving. engagement with pulleysZSt) by means `ofidlernpulleys 254` and/256. "Pulleylillhas a V'pulley 258 attached-thereto for rotationl thereby. A variable speed pulley 269 having a painoffxed-outer f llangesi 262^and- 264 and a .oatingcentreilange 266 iS rearriedfbyy shaftl 2`67won the-` end yof. arm'lZltl. .wArm'ZO :zis pivotally attachedtothe" front barlZ Vofibed.orftable 'tof-permit 'variable speed'pulley 26() to swingiupwardly onidownwardly Oney side .offvariable speedvpulleyT-260 -`iszcounectedi tov-pulley-ZSS by'meansof \l^belt-26? Thelother side of. variable: speed pulleylzt) is connected to` V-pulley 56 of. clutch mechanism-)45 by VV-beltv 272. l It will, therefore, `befrseen that :vertical movementof viariable ispeed. pulley` 260` will cause belt' 268 to-fmovelloating centre flange^266topermit'beltlt to drive saidI variable ispeed pulleyat'` a faster rate. At'the'I samek time movementof floating centreutlange 266-to the left causes belt L 272"tof.be driverrat a' fasterzrateiof speed. Conversely,

Y flowering variable .speed pulley/i260 causesbeitzzii to ride z nearer. the'A .periphery Vof -ithe variable speedl pulley 'thus driving it at aslowerzrateofispeed and alsoy causes-.belt 272ito-bei'driveninearer. thel vaxisof the pulleyv and. conser quentlydriven at azslowerlrate of'spe'ed. .,Movem'ent of 751nvariable speed-r:pulley;,260.1thereforfcan be;;em'ployed= to control the speed of shaft or spindle 34 and cam driving trol, is mounted on the lower end of front wall 33 of housing 36 in alignment with shaft 38 about which housing 36 pivots. The entire mechanism is held in place on boss 278, Fig. 5, by means of two

bolts

280 and 282.

Adjustable arm 224 has one of its sides contacting the face of boss 278 and is adapted to pivot around bolt 280 upon bolt 282, which passes through a slot in ann 224, being loosened. Fine adjustment of arm 224 is obtained to set the clearance between yarn guide 28 and package core 18 at the start of winding, by means of adjustment screw 284 which is threadedly carried by bent over end 286 of arm 224 and which engages a shoulder 288 formed on variable speed pulley controlling arm 230. Variable speed pulley controlling arm 296 is spaced forwardly of adjustable arm 224 by means of spacing washers carried by

bolts

280 and 282. Variable speed pulley controlling arm 290 carries a bushing or sleeve 292 which is axially aligned with shaft 38 and which pivotally carries depending package sizing arm 134 and differential tension controlling arm 294. A cani carrying arm 296 is adjustably carried by the lower end of speed controlling arm 291i by means of a bolt and slot connection to said arm 29) which permits the position of said cam carrying arm 296 to be adjusted lengthwise of arm 290. Cam carrying arm 296 is provided with a cam slot 298 adapted to engage the end of shaft 267 which carries variable speed pulley 2&8 on arm 279. Cam slot 298 is provided with a first portion of its length 300 which is concentric with shaft 33 and with a second portion 362 which diverges from shaft 38. Arm 290 swings in a clockwise direction as viewed in Figs. 3 and 4 as spindle 34 is moved away from yarn guide 28 as the package being wound increases in diameter. lt will, therefore, be seen that while shaft 267 is within the first or concentric portion 300 of cam slot 298 there will be no movement of variable speed pulley 260 and the speed of spindle 34 and traverse cam carrying shaft 26 will remain constant. The length of concentric portion 300 is such that it will leave shaft 267 at the time the peripheral speed of the package being wound is substantially equal to the maximum speed at which a strand of yarn Y can be wound. Continued clockwise motion of arm 290 causes the diverging portion 302 of cam slot 29S to lower variable speed pulley 260 to decrease the speed of spindle 34 and traverse cam shaft 26 at such a rate as to maintain constant the peripheral speed of the package being wound.

Depending sizing control arm 134 is pivotally carried by bushing or sleeve 292 and is held thereon against rotation by means of bolt 280. Differential tension controlling arm 294 is also pivotally mounted on bushing or sleeve 292 and is held against rotation thereon by means of

bolts

280 and 304. The manner in which differential tension controlling arm 294 cooperates with the tension mechanism will be explained in detail hereinafter. It is suiiicient to say at this point that arm 294 is provided with an arcuate slot 306 which adjustably carries one end of a tension actuating link 30S.

Tension mechanism.-The present apparatus includes a novel tension applying mechanism that is capable of applying a differential tension as the yarn package increases in diameter and which is self-cleaning. Horizontal shaft 132 which drives toothed wheel 13d, used in connection with the knockoff mechanism, for stopping the individual winding units upon the breakage or exhaustion of the strand of yarn being wound, is also employed to drive the self-cleaning tension disk employed in the tension mechanism. Shaft 132 is supported and suitably journaled by hanger members, tobe explained in detail hereinafter, forming a part of each tension unit. Shaft 132 is driven by motor 16 through the medium of a belt 310 driven by idler pulley 254. Belt 310 in turn drives pulley 312, Fig. 1, carried by the input shaft of a speed reducing unit 314. The output shaft of speed reducing unit 314 carries a sprocket wheel which drives shaft 132 by means of sprocket chain 316 and a sprocket wheel carried by said shaft 132.

The individual tension applying units, Figs. 3, 4, 13, 14 and 15, each include a bracket 318, carried by the front horizontal bar 12 and located beneath the forward end of shaft or spindle 34 adapted to carry the package core 1 8. Shaft 132 is supported and suitably journaled throughout the length of the apparatus by means of a forwardly extending hanger member 319 carried by bracket 318. A rotatable tension disk 320, formed from nonmagnetic material, is mounted for rotation on a stub shaft 322 carried by one end of an arm 324 pivotally connected to the lower end of bracket 318 by means of pivot pin 326. The periphery of tension disk 320 carries a rubber driving ring or tire 328 adapted to contact the periphery of a driving wheel 330 carried by shaft 132. A tension disk operating yoke 332 is mounted on shaft 132 for pivotal movement therearound. Yoke 332 is adapted to be pivoted by starting handle 30 by means of a rod 334 having its upper end engaged in an opening in said starting handle 80 and its lower end engaged in a slot 336 in yoke 332. Yoke 332 is operatively connected to arm 324 by means of rod 338 which has its upper end engaged in an opening in yoke 332 and its lower end passing through an opening in said arm 324 and adapted to lift said arm and tension disc 320 by means of compression spring 340 nterposted between the end of said rod 338 and the under surface of arm 324. Downward motion of starting handle 80 moves rod 334 downwardly to bring its lower end into engagement with the lower end of slot 336 on yoke 332, whereupon continued downward movement of said starting handle rotates said yoke in a clockwise direction as viewed in Figs. 13 and 14. Clockwise rotation of yoke 332 lifts rod 338 to pivot arm 324 upwardly to bring rubber driving ring 328 carried by the periphery of tension disk 320 into engagement with the periphery of driving wheel 330 carried by shaft 132. Contact of rubber driving ring 328 with driving wheel 33d causes said driving wheel to rotate said tension disk to maintain the tension mechanism free from dirt and other foreign matter that may be carried thereinto by the running strand of yarn Y. Upward movement of starting handle 80 to release clutch mechanism 45 and thus stop the operation of the winding unit pivots yoke 332 in a counterclockwise direction as viewed in Figs. 13 and 14 to move tension disk 320 away from driving wheel 330 to stop the rotation of said tension disk.

A tension plate 342 is held closely adjacent to one surface of tension disk 320 by lmeans of arm 344, Fig. l5. Tension plate 342 is held loosely by arm 344 by means of a pin 346 attached to the back of said tension plate 342 and approximately on its centre line to permit said plate to oscillate on said arm and tobe drawn into contact with the adjacent face of tension disk 320 by magnetic means to be described hereinafter. An oscillation limiting member 348 having a pair of spaced outwardly turned

abutments

350 and 352 formed on its upper edge is attached to the back surface of tension plate 342 beneath pin 346 and is so located on said tension plate 342 that the

abutments

350 and 352 can contact the lower edge of arm 344 to limit the amount that said plate can oscillate. Tension plate 342 is located between the axis of tension disk 32!) and its periphery so that rotation of in diameter. away from tension disk 320 and the total distance which annessi lli 320 and 'tension plate 342 to have applied thereto a predetermined tension by means of a magnet to be described hereinafter. A plurality of rr dial grooves 354 are formed in the face of tension disk 328 which contacts tension plate 342 to collect dirt and other foreign matter drawn between tension plate 342 and tension disk 320 by the running strand of yarn Y and to carry such foreign matter out from between said two members.

A fixed shaft 356 extends forwardly from hanger member 319 and pivotally carries U-shaped magnet holder 358. A permanent magnet 368 is carried by magnet holder 358 and is located by said holder opposite the upper portion of tension plate 342 and on the opposite side of tension disk 32d from said tension plate. Inas- `much as tension disk 328 is formed from a nonmagnetic material the lines of iiux from magnet 360 pass through said disk and draw tension plate 342 against the surface of disk 328 and the strand of yarn therebetween. It will be seen that the force with which tension plate 342 is held against tension disk 328 and the strand of yarn Y l justably connected to and is moved by differential tension controlling arm 294. The other end of link 388 is pivotally connected to the end of lever 362, Figs. 3 and 4, which is fast upon one end of shaft 364, Figs. 13 and 14. Shaft 364 is suitably journaled in a pair of lugs extending from the side of hanger 319. The other end of'shaft 364 has a lever 366 iixedly attached thereto and which has a cam slot 368 formed therein. Magnet adjusting plate 378 is pivotally carried adjacent its upper end by shaft 356 and is adjustably secured to one side of U-shaped magnet holder 358 by means of a bolt and nut 372 which passes through a hole in the side of magnet holder 358 and an arcuate slot in magnet adjusting plate 370. lt will, therefore, be seen that the initial position of magnet 360 with respectto tension disk 320 can be established by loosening bolt and nut 372, locating said magnet in its desired starting position and tightening said bolt and nut. A cam following roller 374 carried by magnet adjusting plate 370 engages cam slot 368 in lever 366 so that movement of said lever 366 will pivot said adjusting plate 370, U-shaped magnet holder 358 and magnet 360. Asthe winding cycle progresses and differential tension controlling arm 294 swings in a clockwise direction link 388 is moved from right to left as viewed in Figs. 3 and 4. This movement of link 388 rotates lever 362 in a counterclockwise direction and lever 362 acting through shaft 364 rotates lever 366 in the same direction. The counterclockwise rotation of lever 366 acting through cam slot 368 and cam follower 374 pivots magnet adjusting plate 370 and with it magnet holder 358 and magnet 368 away from tension disk 320 to decrease the tension applied tothe running strand of yarn Y as the package increases The rate at which magnet 360 is moved it is moved during a winding cycle can be adjusted by moving the location of the end of link 388 in arcuate slot 306.

The tension mechanism is provided with yarn guiding means to facilitate threading the apparatus, and to guide the strand of yarn Y as the package is being wound so that it passes between tension disk 328 and tension plate 342. A forwardly extending yarn engaging bar 376 is carried by the upper edge of hanger member 319 with one of its edges in substantially the same plane as the yarn 14 contacting surface oftcnsion disk`328. A yarn guiding slot is formed in the .bottom legof an L-shap'ed plate 380 which extends beneath tension disk`320 and tension plate 342. L-shaped plate 380 is supported by an angular member 382 having one of its ends attached to the bottom of bracket 318 and its other end attached to the end of shaft 356. A curved yarn threading guide 384 is attached to the angular member 382 adjacent shaft 356 and is so shaped that it covers the forward edge ofl tension disk 320 to guide the strand of yarn Y between said diskl 320 and tension plate 342 when the tension is being threaded. A curved rod 386 also is positioned in front of the forward edge of tension disk 320 by having its upper end attached to forwardly extending yarn .engaging bar 376 and its lower end attached to the bottom leg 378 of the L-shaped plate 380. In threading the tension mechanismthe strand of yarn is moved rearwardly on the right hand side of curved rod 386, as viewed inFgS. Sand 4, and ybrought j into engagement with curved .yarn ythreading guide 384 which guides it between tension disk 320 and tension plate 342. The strand of yarn beneath the tension is then moved rearwardly to cause the lower portion of curved rod 386 to guide the strand of yarninto the yarn guiding slot formed inthe bottom leg 378 of L-shaped plate 380.

Method of operation- The apparatus of the present invention is threaded preparatory to starting winding cycle by placing a supply of yarn ori-shelf 1S, passing the strand of yarn Y between tension disk 329 and tension plate 342 of the tension assembly and bet-Ween forwardly extending yarn engaging bars 376 of the tension assembly and 124 of thestop mechanism and Wrapping-the end of the yarn around expanding mandrel 229. An yempty package core or yarn-holder 18 is then placed on mandrel 229 to clamp the end of the yarn thesebetween and clamping lever238 is pulled forwardly to vexpand said mandrel to clamp core 18 thereon. The-forward swinging movement of clamping lever 230 acting through link 236 and rod operating lever 238 draws-rod 208 back into hollow vshaft 190 causing its cam surface 210 to move ypawl releasing link 282 outwardly. This movement of link 202 causes finger 2l2 thereon to release pawl i198 from the teeth on ratchet wheel 194 whereupon helical spring 214 rotates spiral cam 148 back to itsstarting position. Release of lever 238 :permits spring 244 totmove rod 208 out of hollow shaft 190 a sufficient distance to release cam surface 210 from pawl releasing link 202 to permit pawl 198 to again engage the teeth on ratchet wheel 194.

Starting handle is then depressed straightening the toggle linkage formed by upstanding finger and link 92 to move roller 94 towards the traverse mechanism and thereby permit package core 18 to move closely adjacent to yarn guide 28 into its winding position. Lowering starting handle 86 also brings `latch shoulder 104 on latch member98 over keeper member 106 carried bystarting handle 88 to latch said handlein its lowered or operating position and to maintain roller 94 at its windingposition. Lowering .starting handle S0 alsoswings L-shaped actuating arm 84 in a direction to release the brake 76 from outer flange 66 of the clutch member 45. Releasing brake member 76 permits spring 74 of the clutch mechanism to move clutch plate 60 into engagement with the clutch facing 58 on V-pulley 56. Engagement of the clutch mechanism causes

pulleys

42 and 44 to be rotated by motor 16 by means of belt248 which drives pulleys 258 and 268 and belt 268 which drives variablel speed pulley 260. V-pulley 56 is driven by variable speed pulley 260 by means of belt 272. Rotation vof `pulley 42 drives belt 46 to rotate pulley 40 and shaft or spindle 34 and package core 18 to cause the strand of yarn Y to be wound onsaid package core. Rotation of vpulley 44, by means of belt 52, double pulley 48, belt 32 and pulley 30, rotates cam shaft 26 to rotate the cam carried thereby and to reciprocate yarn guide 28`longitudinally Vof package core 18 to traverse strand of yarn'Y thereacross.

Rotation of spindle 34to wind strand of yarn `Y on package core 18 is transmitted to spiral cam 140 to rotate said cam at such a rate that it will, by reason of its periphery being in contact with roller 94, move said spindle 34 and package core 1S and the yarn wound thereon away from yarn guide 28 at substantially the same rate as the radius of the package being wound increases. The rotation of spindle 34 is transmitted to cam 14d through a speed reducing mechanism comprising worm gear 142 carried by said spindle and driving worm Wheel 144. Worm wheel 144 drives crank disk 14S which reciprocates ratchet pawl 156 to rotate ratchet wheel itatchet wheel 162 drives pinion gear 164 which acting through

gears

168, 170, 172 and 174 drives change gear 182. Change gear 182 drives worm gear 186 which is meshed with and drives worm wheel 188 carried by hollow shaft 190. Spiral cam 140 is carried by hollow shaft 19t) for rotation thereby.

Upon the breakage or exhaustion of the strand of yarn Y breakage lever 110 is permitted to pivot in a clockwise direction to bring its abutment 128 in contact with the toothed surface of toothed wheel 136. Abutment 128 is engaged by one of the teeth on toothed wheel 130 which lifts lever 110 to pivot latch member 9S to disengage its latch shoulder 104 from keeper member M96 on starting handle 8l) thus permitting spring 6 to lift said starting handle. When starting handle 80 is lifted by its spring 96 L-shaped actuating arm 84 moves brake 'i6 against liange 66 of the clutch mechanism 45 to disengage clutch plate 60 from the clutch facing 5S of pulley 56 to thereby stop the rotation of spindle 34 and the reciprocation of yarn guide 28. The upward movement of starting handle St) also breaks the toggle formed by upstanding finger 9% and link 92 to move roller 94 in a direction to cause it to move spindle 34 and the package of yarn carried thereby away from yarn guide 28.

As the package being wound increases in diameter the movement of spindle 34, and the package carried thereby, away from yarn guide 23 causes housing 36 to pivot around shaft 3S. This swinging or pivoting movement of housing 36 swings variable speed pulley controlling arm 29d and depending arm 134 carried thereby to cause lug 136 formed on the end of said arm 134 to approach the lowermost end 1.38 of latch member 9S as the package grows. When the package being Wound attains its predetermined desired size lug 136 contacts the lowermost end 138 of latch member 98 to rotate said latch member to release its latch shoulder 104 from keeper member ill permitting starting handle 80 to be lifted by spring 96 to stop the operation of the winding unit and to move the fully wound package away from yarn guide 2S to permit said package to be removed from the spindle without danger of damaging the yarn by contact with said yarn guide.

The swinging or pivoting of variable speed pulley controlling arm 290 moves cam slot 298 of cam carrying arm 296 across the end of shaft 267 whereby said cam slot during the iirst portion of its motion holds variable speed pulley 260 at a fixed location and subsequently lowers said pulley at a predetermined rate to cause said variable speed pulley during the remainder of the winding cycle to reduce the speed of shaft or spindle 34 and cam shaft 26 to maintain the speed at which the strand of yarn Y is wound on the package substantially constant.

Lowering starting handle 80 moves rod 334 connected thereto downwardly to lift tension disk 32h to bring its periphery into contact with driving wheel 33B carried by shaft 132 to therebyrotate said tension disk to permit the radial grooves 354 formed in said disk to collect dirt and other foreign matter carried into the tension by the running strand of yarn and remove it therefrom before it has an opportunity to build up to an extent sutiicient to affect the functioning of the tension.

The swinging or pivoting of variable speed pulley controlling arm 290 by the growth of the package also swings differential tension controlling arm 294 to move tensionV actuating link 398 to pivot lever 366 carrying cam slot 368 by means of lever 362 connected to link 308 and shaft 364 which carries lever 366. Movement of cam slot 368 swings permanentmagnet 360 away from the back of tension disk 320 by means of magnet adjusting plate 370 which engages said cam slot and is connected to U-shaped magnet holder 358.

Since certain changes may be made in the above apparatus without departing from the scope of the invention herein involved, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

What is claimed is:

l. In a winding machine the combination comprising a winding spindle adapted to hold a package core, a yarn guide for reciprocating a strand of yarn longitudinally of said spindle, a source of power for rotating said spindle and operating said yarn guide, means for selectively connecting said source of power to and disconnecting it from said spindle and yarn guide, a manually operable lever movable to operate said connecting said disconnecting means, means urging said lever in the direction to disconnect said source of power from said spindle and yarn guide, latch means for holding said lever in the position wherein said source of power is connected to said spindle and yarn guide, a link associated with said lever and movable thereby for separating said spindle and yarn guide as said lever moves in the direction to disconnect said source of power, and means operative upon the breakage or exhaustion of a strand of yarn being wound for releasing said latch. f

2. In a winding machine the combination comprising a winding spindle adapted to hold a package core, a yarn guide for reciprocating a strand of yarn longitudinally of said spindle, a source of power for rotating said spindle and operating said yarn guide, means for selectively connecting said source of power to and disconnecting it from said spindle and yarn guide, a manually operable lever movable to operate said connecting and disconnecting means, means urging said lever in the direction to disconnect said source of power from said spindle and yarn guide, latch means for holding said lever inthe position wherein said source of power is connected to said spindle and yarn guide, a link associated with said lever and movable thereby for separating said spindle and yarn guide as said lever moves in the direction to disconnect said source of power, and means operative upon the package being wound attaining a predetermined size for releasing said latch.

3. In a winding machine the combination comprising a 'winding spindle adapted to hold a package core, a yarn guide for reciprocating a strand of yarn longitudinally of said spindle, a source of power for rotating said spindle and operating said yarn guide, means for selectively connecting said source of power to'and disconnecting it from Said spindle and yarn guide, a manually operable lever movable to operate said connecting and disconnecting means, means urging said lever in the direction to disconnect said source of power from said spindle and yarn guide, latch means for holding said lever in its clutch engaging position, a toggle having one of its ends connected to said lever whereby movement of said lever causes said toggle to bend or straighten, an abutment carried by said toggle and movable therewith for separating said spindle and yarn guide when said lever moves in the direction to disconnect said source of power, and means forreleasing said latch.

4. in a winding machine the combination comprising a winding spindle adapted to hold a package core, ayarn guide for reciprocating a strand of yarnlongitudinally of said spindle, a source of power for rotating said spindle and operating said yarn guide, a clutch for selectively connecting said source of power to and disconnecting it from said spindle and yarn guide, a manuallyvoperable ammessa lever movable to engage and disengage said clutch, means urging said lever in the direction to disengage said clutch, latch means for holding said ever in its clutch engaging position, a link associated with said lever and movable thereby for separating said spindle and yarn guide as said lever moves from its clutch engaging position to its clutch disengaging position, and means operative upon the breakage or exhaustion of a strand of yarn being wound for releasing said latch.

5. In a winding machine the combination comprising a winding spindle adapted to hold a package core, a yarn guide for reciprocating a strand of yarn longitudinally of said spindle, a source of power for rotating said spindle and operating said yarn guide, a clutch for selectively connecting said source of power to and disconnecting it from said spindle and yarn guide, a manually operable lever movable to engage and disengage said clutch, means urging said lever in the direction to disengage said clutch, latch means for holding said lever in its clutch engaging position, a link associated with said lever and movable thereby for separating said spindle and yarn guide as said lever moves from its clutch engaging position to its clutch disengaging position, and means operative upon the package being wound attaining a predetermined size for releasing said latch.

6. ln a winding machine the combination comprising a winding spindle adapted to hold a package core, a yarn guide for reciprocating a strand of yarn longitudinally of said spindle, a source of power for rotating said spindle and operating said yarn guide, a clutch for selectively connecting said source of power to and disconnecting it from said spindle and yarn guide, a manually operable lever movable to engage and disengage said clutch, means urging said lever in the direction to disengage said clutch, latch means for holding said lever in its clutch engaging position, a toggle having one of its ends connected to said lever whereby movement of said lever causes said toggle to bend or straighten, an abutment carried by said toggle and movable therewith for separating said spindle and yarn guide when said lever moves in the direction to disengage said clutch, and means for releasing said latch.

7. In a winding machine the combination comprising a rotatable winding spindle, holding means carried by said spindle for selectively clamping a yarn receiving core thereon and releasing said core therefrom, manually operable means movable in a first direction to bring said holding means into its core clamping position and movable in a second direction to bring said holding means into its core releasing position, a yarn guide adapted to traverse a strand of yarn longitudinally of said core to wind a package of yarn thereon, mounting means supporting said spindle for movement towards and away from said yarn guide, a source of power for rotating said spindle to wind a strand of yarn on a core carried thereby, means carried by said spindle mounting means and operated by said source of power to positively move said spindle away from said yarn guide as the package being wound increases in diameter, and a link connecting said manually operable means and said last mentioned means whereby movement of said operable means in said first direction disengages said last mentioned means from said source of power to thereby permit said spindle to move towards said yarn guide.

8. ln a winding machine the combination comprising a rotatable winding spindle, holding means carried by said spindle for selectively clamping a yarn receiving core thereon and releasing said core therefrom, manually operable means movable in a first direction to bring said holding means into its core clamping position and movable in a second direction to bring said holding means into its core releasing position, a yarn guide adapted to traverse a strand of yarn longitudinally of said core to wind a package of yarn thereon, mounting means supporting said spindle for movement towards and away from said yarn guide, a source of power for rotating said spindle to' wind a strand of yarn on a core carried thereby, a cam carried by said spindle mounting means for operation by said source of power to positively move said spindle away from said yarn guide as the package being wound increases in diameter, and a link connected to said manually operable means and operatively associated with said cam whereby movement of said operable means in said first direction disengages said cam from said source of power to thereby permit said spindle to move towards said yarn guide.

9. ln a winding machine the combination comprising a winding spindle adapted to hold a package core, a yarn guide for reciprocating a strand of yarn longitudinally of said spindle, a source of power for rotating said spindle and operating said yarn guide, means for selectively connecting said source of power to and disconnecting it from said spindle and yarn guide, a lever movable to operate said connecting and disconnecting means, means urging said lever in the direction to disconnect said source of power from said spindle and yarn guide, latch means for holding said lever in the position wherein said source of power is connected to said spindle and yarn guide, a stop member carried by said lever for movement therewith, means actuated by said source of power and engageable with said stop member to positively separate said spindle and yarn guide as the package being wound increases in diameter, and means operative upon the breakage or exhaustion `of a strand of yarn being wound for releasing said latch whereby movement of said lever will space the periphery of the package being wound from said yarn guide.

10. In a winding machine the combination comprising a winding spindle adapted to hold a package core, a yarn guide for reciprocating a strand of yarn longitudinally of said spindle, a source of power for rotating said spindle and operating said yarn guide, means for selectively connecting said source of power to and disconnecting it from said spindle and yarn guide, a lever movable to operate said connecting and disconnecting means, means urging said lever in the direction to disconnect said source of power from said spindle and yarn guide, latch means for holding said lever in the position wherein said source of power is connected to said spindle and yarn guide, a stop member carried by said lever for movement therewith, a cam actuated by said source of power and engageable with said stop member to positively separate said spindle and yarn guide as the package being wound increases in diameter, and means operative upon the breakage or exhaustion of a strand of yarn being wound for releasing said latch whereby movement of said lever will space the periphery of the package being wound from said yarn guide.

11. In a winding machine the combination comprising a winding spindle, holding means carried by said spindle to selectively clamp a yarn receiving core thereon and release it therefrom, manually operable means for moving said holding means from core clamping position to core releasing position and from core releasing to core clamping position, a reciprocating yarn guide adapted to traverse a strand of yarn longitudinally of said core to wind a package of yarn thereon, a cam, a stop member positioned to be engaged by said cam, a driving connection between said spindle and said cam whereby rotation or said spindle moves said cam from a starting position wherein said spindle is adjacent said yarn guide to progressively separate said spindle and yarn guide as the winding cycle progresses, and means actuated by said manually operable means for disengaging said driving connection to permit said cam to return to its starting position.

12. In a winding machine the combination comprising a winding spindle, holding means carried by said spindle to selectively clamp a yarn receiving core thereon and release it therefrom, manually operable means for moving said holding means from core clamping position to core releasing position and from core releasing to core clamping position, a reciprocating yarn guide adapted to traverse a strand of yarn longitudinally of said core to wind a package of yarn thereon, a cam, a stop member positioned to be engaged by said cam, a driving connection comprising a ratchet and pawl between said spindle and said cam whereby rotation of said spindle moves said cam from a starting position wherein said spindle is adjacent said yarn guide to progressively separate said spindle and yarn guide as the winding cycle progresses, and means actuated by said manually operated means for moving said pawl out of engagement with said ratchet to permit said cam to return to its starting position.

13. In a winding machine the combination comprising a winding spindle, holding means carried by said spindle adapted to receive. a yarn receiving core thereon, a reciprocating yarn guide adapted to traverse a strand of yarn longitudinally of said core to wind a package of yarn thereon, a substantially constant speed source of power for rotating said spindle and reciprocating said yarn guide, a variable speed mechanism interposed between said souree of power and said spindle and yarn guide, means driven by said source of power to positively separate said spindle and yarn guide as the package being wound increases in diameter, and a cam moved by the separation of said spindle and said yarn guide for regulating said variable speed mechanism to reduce the speed at which said source of power rotates said spindle and reciprocates said yarn guide.

14. In a winding machine the combination comprising a winding spindle, holding means carried by said spindle adapted to receive a yarn receiving core thereon, a

reciprocatingyarn guide adapted to traverse a strand of yarn longitudinally of said core to wind a package of yarn thereon, a substantially constant speed source of power for rotating said spindle and reciprocating said yarn guide, a variable speed mechanism interposed between saidv source of power and said spindle and yarn guide, means driven by said source of power to positively separate said spindle and yarn guide as the package being wound increases in diameter, and a cam moved by the separation of said spindle and said yarn guide for regulating said variable speed mechanism to reduce the speed at which said source of power rotates said spindle and reciprocates said yarn guide, the contour of said cam being such that the speed at which said spindle is rotated and said yarn guide reciprocated is varied only during a portion of the separation thereof.

ieerences Cited in the tile of this patent UNITED STATES PATENTS 1,463,181 Vorderwindler July 31, 1922 2,108,410 Perry Feb. 15, 1938v 2,133,711 McAlister et al. Oct. 18, 1938 2,144,192 Mills Jan. 17, 1939 2,271,050 Treckmann et al Ian. 27, 1942 2,283,912 Bushey May 26, 1942 2,296,959 Swanson Sept. 29, 1942 2,335,965 Ribavaro Dec. '7, 1943 2,335,975 Stahl et al. Dec. 7, 1943 2,339,854 Higgins Jan. 25, 1944 2,486,031 .Tencks Oct. 25, 1949 2,532,3U4 Heizer et al. Dec. 5, 1950 2,545,534 Truitt Mar. 20, 1951 2,568,961) Kershaw Sept. 25, 1951