US 1248898 A
Description (OCR text may contain errors)
E. F. PMZKS.
t WINDING MAMHNE. Armlxcmmn msn JUNE 23. wm.
www@ Bw. 4 w17. Y 4 mmm-SHEET 1 E. F. PARKS.
APPLICATION FILED )UNE 23| |916.
Mmm 10mg.. 4,1m?.
1 11 iwii EDWD '.lls.` PARKS, 0F PROVIDENCE, RHODE JISLANIID, SSGNOR T0 UNVERSAL Wm@- 01E' BUSTON, MASSACHUSETTS, A CORPORATIUN 01E MSSAUHUSETTS.
Specification of Letters Patent.
Patented Bee.. d, limit.
; Application med June 23, 1916. Serial No. 105,425.
- ication. I
My invention relates to windin machines and particularly to that type o machines known as friction-drive or drum-winders, in which the cop or package is rotated through contact'of its surface with a driveroll or driving-drum. My improvementis directed to the means for reciprocating the l thread-guide which traverses the yarn or thread longitudinally or the cop during the winding, to deposit it thereon 1n cross-coils or helical turns, and comprises anovel arrangement of mechanism for regulating the speed of traverse of the guide in relation to the. axial speed of rotation of the cop. rl"he object of my improvement is top-rovide means for automatically adjusting the speed-ratio between the guide and cop in accordance with the increase in diameter of the latter to maintain a more constantI relation of the number of turns in the winding to each traverse of the yarn across the cop,
whereby a more` uniform system of laying the coils in place is eected and thereby a better `package produced.
The manner and means for carrying out,
my improvement are fully described in the followlng specification, y illustrated by the accompanying drawings, in which like reference characters 'designate like parts, ln the drawings V Figure 1 is a side elevation of a winding machine' showing my improved traversemechanism applied thereto; y
Fig. 2, a plan view .of the same,A
Fig. 3, a detail view of the traverse-cam and driving-means therefor, 'shown partly in section on the line 3-3 of Fi l, looking in the direction indicated by t e arrow 2;
Fig. 4, a detail ,view showing the conneetionsbetweenY the cop-supporting frame and the traversespeed-changing devices; and
" Figs. 5 and 6, detail views of a modified form of the connections for the speedchanging means.
' Referring to Figs. l and 2, B designates the boxdike frame or casing of the machine, Within which the traverse-.mechanism for y eral heads.
the thread-guide Gr is contained, and on the top of which the drive-roll D is mounted. The roll or drum D Vis secured fast on a horizontal shaft d journaled in'bearings b, b on the frame B and driven from the main source of power through any suitable c onnections, not herein shown or described. Usually the machine comprises a plurality of frames or heads B arranged in gang form on a suitable framework or bed and the shaft al extends the whole 'length of the gang, supported by its bearings in the sevj d .through which the latter is connected to a countershaft, not here shown, generally arranged below the bed of the machine.
Extending rearwardly from the top of As illustrated in Fig. 2, a belt-A .pulley l is mounted at one end of the shaft the frame B are two arms b', b at the ends of which is lxedly su ported a horizontal cross-rod or shaft E. Pivotally mounted on the cross-rod E is a substantially rectangular frame F comprising opposite side-arms f, f at the ends of mwhich are bearings for Vthe rotatable cop-tube or support C. As
shown in Fig. 2, one end of the cop-tube C fits over the end of a spindle f2, rotatably mounted in the end of the arm f and having 'a flange f3 with a spline f4 adapted to engage a cross-slot c in the end of the tube. The opposite end of the tube C is supported on a spindlewf5 journaled in the end of an arm f hinged at f7 on the arm j of the Y frame F. A. coiled spring f8 bears against. the rearward end of the arm f to maintain its spindle f5 in enga ement with the end of the tube C while al owing the arm to be swung back`for insertion and removal of A the tube.
Referring particularly to Fig. l, the yarn or thread-guide Gr is mounted on a slide or carria e g which is supported on two parallel, orizontal rods g', g secured m 'opposite bearings b2, b2 at the sides of the frame B1 and extending across the machine adjacent the periphery of the traverse-cam' K. A roll or stud g2 on the under side of 'the carriage g' engages with the helical .groove ,It 1n the face of the cam K, see also Fig. 3,.v whereby the rotation of the 'cam imparts a reciprocatory fmotion to thecar-r" riage g to slide it 'along the rods g', g. The guide G is usually constructed of sheetmetal, to render it light -in weight, and, as shown in Fig. 4Il, iS bent in tllllbe foi-'m i0 adapt it to-reach up around the drive-roll D. Its upper end is curled back and slotted at'gs, as shown in Fig. 2, to adapt 1t to receive the yarns` or threads y' to deliver them to the cop at a point adjacent the point of contact of the Winding on the drive-roll D.
. As illustrated in the drawin the present machine is adapted for win ing in multiple, that is with a pluralit of yarns y delivering through the guide As shown in Fig. 2 three tension-devices L, L, L are supported on the front of the frame B and these are of conventional arrangement comprising the hinged grids 2,1, see also Fig. 1, adapted tol ress on the yarns drawing across their ars. Theyarns. deliver from supply cops or 4bobbins arranged below the machine, but not here illustrated, draw through the tension-devices L, up across a guide-rod J, and thence lead to the guide G.-
The traverse-cam K which reciprocates the thread-guide Gr is of usual construction, as illustrated in Fig. 3, and is mounted fast on a horizontal shaft k rotatably supported A in ball-bearings 63, 64 at the sides of the frame or casing B. Also secured fast on the shaft lc adjacent one end of the hub 7a2 of the cam K is a friction-disk or wheel M through which the shaft 7c vand cam K are driven from means later described. It will.
be noted from Fi 3 that the right-hand side B of the frame i is constructed as a cover for the main part of the casing so that'. it may be removed to afford access to the parts inclosed therein. To provide forwariations in the fit of the parts of the casing the camshaftc is vassembled therein with self-adlc the outer ball-race 69 is seated in a counterbore in the hub610 of the cover B and the inner race 611 is free to slide on the shaft lc. A coiled spring Im., pocketed in a counterbore at the end of the hub m of the drivingwheel or disk M; bears against the ball-race 611 to vhold it--against the balls 612, while'also maintaining the shaftdk in position in its inner ball-bearing 63. In this manner thel` -shaft is arranged to; float in its bear- 41ng`s with the spring m maintaining the parts in proper relation .while also provid,.-
, ing for self-adjustment to take care of any inaccuracy in the fit of the cover B. Referring to Fig.- 1, the cover B is secured in place on the side of the frame B by means of screws inserted in the holes 613,01' through any other similar arrangement.
- pocket o1 in which is a coiled sprin S.
ytrated in Fig. 4 the arm o5 is Leashes Referring to Fig. l, a stud or shaft N is mounted in a bore 614 near the base of the frame B and extends rearwardly therefrom, being)- held fixedly in place by the set-screw n. ivotally mounted on the stud N is a -hub o having an upwardly extending arm O at'the top of which is a bearing o. Mounted in the ends of the bearing o are ballbearings o2, o2 in which is journaled a horizontal shaft p. On the forward end of the shaft p is fixedly mounted a friction-driving disk'R arranged to engage with the periphery of the drive-wheel M on the cam-shaft k. Preferably, the driving surface of the disk R is covered with a faclng r of liber or similar material to provide for a frictional Contact on the rim ofthe Wheel M and to also resist the wear between these two parts. Fixedly secured to the rearward end of the 'shaft p is a belt-pulley l which'is connected to be driven from the countershaft. previously mentioned but not here shown, which drives the drive-roll D from any suitable prime-mover as desired.
Referring still to Fig. 1, it will-be noted that the hub o f the arm or bracket O is chambered out between its ends to forxrha e outer` end of the shaft N is enlarge to form a .head n2- against which one end of the spring S bears while its opposite end presses a ainst the end of the pocket o4 in the hub o. Trough this arrangement the spring S acts to slide the .bracket O longitudinally of its supporting shaft N to maintain the drivingdisk R in frictional Contact with the drive-V whee] M. At the same time the bracket O is free to turn about the axis of the'shaft N to allow the disk R to be displaced across the -face of the drive-wheel M. Through this means the point of contact of the drivefwheel M on the disk lt may be adjusted in relation to the axis of rotation. of the disk to vary the speed-ratio between the driving and driven elements in the usual manner.
The means for displacing the driving-disk R relatively to the rim of the wheel M is controlled by the growth vof the winding which influences the frame F to swing it upward on its pivot-rod E. As shown in Figs. 1 and 4 the frame F is formed with a rearwardly projecting lug f1 into which is hooked the end of a wire link T. At its lower end the link T is hooked through the end of an arm 05 projecting from the side of the hub o of the bracket O. As illusrovided with a'series of holes o, o7, o8 with which the hooked end 0f the link T can be engaged so thatthe leverage on the bracket O may be varied. to alter the effect of the movement of the framel F therein. This adjustment provides for a greater or less extent of displacement of the driving-disk R in relation4 t0 the drive-wheel M in accordance j Laage with varying requirements of the winding, as more fully explained hereinafter.
In Figs. 5 and 6, I have illustrated a modification in the mechanism for connecting the driving-disk bracket O to be moved from the cop-supporting frame F and also in the means for adjusting its range of movement. As shown in Fig. 5, the pocketed spring S which acts to slide the hub o on the shaft N also serves as a means for turning the arm 0 on its pivot. Une end s of the spring S is held in a bore n.4 in the head n2 of the shaft N while its opposite end s is inserted-in a hole o9 in the hub o. Thus, when the spring S is assembled in position under tension it will have a tendency to rock the arm in the direction indicated by the arrow 4, Fig. 6. @n one sidenof the arm 0 is a triangularlyshaped projection or lug 01' which is slotted vertically through its center as shown at o, Fig. 5. Inserted in the slot 011 i's a triangular cam-plate U pivoted on a crosspin u at its lower end, see Fig. 6. A setscrew u reachesthrough the arm O with one end bearing against the inner edge of the cam-plate U and a check-nut u2 on its the arm V carriesy a pin or stud w on the end of which is rotatably mounted a roll W adapted to bear on the inclined face u of the cam-platev U. The rearward end of the pin w carries a block w fitted to slide in a lvertical slot z formed in a lug Z projecting from the frame B. Through this arrangement the roll W is adapted to be guided ina vertical direction as the arm V 'is drawn upward by the swinging movement of the frame F during the growth in the winding. As the roll W rises on the calin-platel U it allows the arm 0 to rock in the direction indicated by the arrow 4, Fig. 6, under action of its spring S). 'Ihe range of movement of the arm or bracket U isregulated by adjusting the inclination of the cam-plate U as before described, and in this manner the amount of displacement of the driving-disk R on the drive-wheel M is controlled'as required. The method of operation of the `periphery of the drive-roll D and as the@` latter is driven constantlythe tube will beA rotated to\wind on. the yarnor thread de-` livered through the'guide G. In Fig. l the cop or packageY is' represented as having been built up to a diameter substantially equal to that of the drive-roll D, and as the' winding continues to increase in diameter the frame F swings upwardly on its pivot to accommodate the growth in the yarnmass'.h *Meanwhile,' the rotation ofthe cam K acts to reciprocate the carriage g back and forth on the rods g', g to traverse the guide G along the cop to deposit the yarn in helical coils thereon. As before stated,
the cam K is driven independently `of the v drive-roll D through the shaft p and friction-disk R which engages the drive-wheel y M. At the start of winding ofeach cop or package the driving-disk R is in the position illustrated in Figs. '3 and 4c, making contact with the drive-wheel .M at a point adjacent the outer rim of the disk. With the .disk It and wheelM having this relation, the shaft la and cam will be rotated at their maximum speed and consequently the thread-guide G will be reciprocated at its 'maximum rate in relation to the speed of the cop Y.' Itis obvious thatsincepthe speed of'rotation ofthe drive-roll is. maintained constant throughout the whole operation of the machine, the axial speed ofthe cop will be retardedi as its diameter increases. According toi the usual practice in producing drum-wound cops, the ratio of speed between the rotation of the cop and the reciprocation of the thread-guide is such as to give approximately eight turns of the cop to each traverse of the yarn. With this system of winding the cop is started with eight turns or coils about the tube C in each 'traverse of' the yarn from one end to the other, or 'in technical terms the cop has eight winds in its first layer. its the cop increases in diameter its axialspeed of rotation is gradually retarded, due to the increasing disparity between its circumference' and that of the drive-roll as before explained, and if the speed of the threadguide remains constant then the yarn will be wound with a decreasing number of turns during the continuous growth of the cop. In other words, the cop will be Wound with a gradually diminishing number of winds from start 'to finish, or stated briefly, it will have a less number ofvwinds in the outer layers than inthe inner ones.
It Ahas been .found in practice that this great disparity in the number of winds at the beginning and ending of the cop is open to serious disadvantages and results in defects in the winding and irregularities in delivery of the yarn when the 'cop is unwonnd. 'Ihe reasons for this are as' follows: When thegyarn is wound from one end of I the cop to the other with a relatively large number of turns, it will hold its lace better than when wound with only a ew turns. In other-words,the coils are less liable to slip or become displaced when wound with a relatively slight pitch or lead; while, on the other hand, if the pitch vor angle of the coils is made too great there will be a tendency for the yarn to pull in from the endsv of the cop and this causes irregularities on its surface with the coils making ridges and hollows, the result being a malformed package. Furthermore, where the coils have a quick traverse across the cop at each revoluf termed cobwebs tion, the laying of the yarn at the ends of traverse cannot be controlled so precisely and it is liable to roll over the edges and dra'w across the ends in what is technically these defects offcobwebs and other malformations in the usual drum-wound cops are highly objectionable, since they prevent free delivery of the yarn in unwinding and lotherwise lessen the commercial value of the ing oii' it will pull in fromV the ends toward Ato the center and in doing this will roll and twist on itself. In the case of ply yarns this action disturbs the original twist of the yarn at frequent intervals and destroys its uniformity so that its quality is impaired. The disadvantages of this feature are even more pronounced where the yarn is wo-und in multiple to be 4delivered to twisters, for a uniform twist cannot be obtained if the strands are rolled together and twisted, first one way and then the other, as they come olf of the supply package. For this reason, in some cases it has been found impracticable to twist. from drum-wound supplies and produce an even, level yarn.
The object of the present invention is to eliminate the defects of drum-winding as pointed out above by preventinggthe rapid decrease in the number of winds from start to finish of the cop. To accomplish this purpose I provide means operating automatically` to'control and regulate the speed of reciprocation of the thread-guide in'relation to the 'axial speed of rotation of the cop. In other words, the essential feature of my invention is the means for regulating the speed-ratio between the cop and the thread-guide, and this means is controlled .'by.the`cop, being dependent upon ythe movement Oifl the of the copaway It is well known that' cated by the arrow 4, Fig. 4. As the bracket O is rocked in this manner the driving-disk R is shifted across the periphery of the drive-wheel M to change the axial relation of the disk thereto. Through this means the disk R will be caused to impart rotation to the wheel M and cam K with a gradually diminishing speed and hence the Speed of traverse of the thread-guide will be proportionately retarded. 'In this manner the speed-ratio between the guide and oop is maintained more nearly uniform and therefore there will be less change in the number of winds from start to finish of each. package. For most purposes it is not necessaryy to alter the speed of the threadguide in exact proportion with the change in axial speed of the cop. Theipresent arrangement of mechanism is designed more particularly to prevent a too rapid or excessive change in the number of winds and it has been determined that if the, cop is started with approximately five winds and completed with half this number or twoand-one-half winds the result is satisfactory.l A cop wound in this manner is far superior to the usual drum-wound package having eight winds at the start and only a half wind at the completion for the reasons previously given.
It -is also to be noted that other changes in the speed-ratio between the cop and guide are provided for in the means for adjusting the link T along the arm o5 to givea greater or less extent of displacement of the bracket O and driving-disk R. This feature of adjustment is illustrated in its preferred form in Figs. 5 and 6. With the arrangement here shown, as the Aframe F is swung u wardly with the growth of the Windinglt e arm V is drawn. up with it. The ro W is thereby caused to rise, with its axis traveling in a vertical plane as guided by the slide or block w', and as it moves along the cam-plate U the arm O is rocked bythe spring S to ell'ect the displacement of the driving-disk R as before explained. The provision for changing the inclination of the cam-plate U, through the means of the -set-screw u allows for a wide ran of adjustment and the s 4eed-ratio; can therefore be regulated wit .in certain .limits as desired.
lilaving now describedI the nature of my improvement and the manner and means for putting it into practice, Without limiting myself to the exact embodimentJ of the invention shown andy described, what ll claim is 1.- ln a Winding machine, the'combination l With a rotating drive-roll, of` a frame for supporting the` cop With its axis adapted to recede from the drive-roll during the growth disk, and means to adjust said connection to vary the extent of movementof the disk by the'arm during the movement of the copsupporting frame.
2. ln a Winding machine, the combination With. a rotating drive-roll, of a frame for supporting the cop to be driven by the roll with its axisl adapted to4 recede therefrom during the growth in the Winding, a threadguide, means for reciprocating the guide, a friction-Wheel for driving the reciprocating means, a second friction-wheel for driving the rst Wheel, a rockable arm for supporting one Wheel to adapt it to be shifted across the face of the other Wheel, a cam adjustable on said arm, a link connected to be movedby and With the cop-supporting frame, means on the link acting against the cam to shift theposition of the rockable arm, and means toadjust the position of the aan l 4. lin a Winding machine, the combination With the main frame thereof, of a camshaft journaled in bearings in said frame,
- a traverse-cam on said shaft, a thread-guide adapted to be reciprocated from said cam, a friction-Wheel connected to rotate the Cam, a rod extending from the side of the frame at right-angles to the axis of the cam, an arm pivoted on said rod, a friction-disk journaled in bearings lat the end of the arm to adapt its face tobear against the friction-Wheel, a drive-roll journaled in bearings on the main frame, a cop-supporting' frame pivoted on the main frame to adapt it to support the cop in Contact With the drive-roll, and a link connecting said copsupporting frame to move the pivoted arm whereby to rockthe latter to displace the friction-disk with respect to the friction- Wheel to alter the speed of rotation ofrthe cam as the axis of the cop recedes from the' drive-roll.
5. ln a Winding machine, the combination with a box-like frame, of a cam-shaft4 journaled in bearings in said frame, a traverse-cam on 'said shaft, a thread-guide re-I ciprocated from said cama friction-Wheel connected to drive the cam, an arni pivoted on the frame to adapt it to rock on an axis perpendicular to the axis of lthe friction- Wheel, a friction-disk journaled in bearings at the end of said arm, a drive-roll journaled in bearings at the top of the frame, a yoke-like frame for rotatably supporting the cop to adapt it to contact with the drive-roll, and a link connecting said copsupporting frame to rock the pivoted varm to shift the friction-disk across the periph- -ery of the frictlon-Wheel to alter the speed of the cam asthe cop increases in diameter.
cam on the arm to vary the extent of movement of the latter during the movement of the frame. f 3'. ln a Winding machine, the combination with the main frame thereof, of a drive-roll journaled in bearings on said frame, means to rotate Asaid drive-roll, a cop vsupporting frame pivoted on the main frame to rotatably support the cop in contact With the y drive-roll, a traverse-cam rotatably mounted in the main frame, a thread-guide adapted to be reciprocated from said Can, a friction- Wheel rotatably connected to the traversecam, an arm rockable on an axis at rightangles to the axis of the friction-Wheel, a friction-disk journaled at the end of said arm to adapt its face to contact with 'the friction-Wheel, a link connectin the copsupporting frame with the rocka le arm to move the latter as the axis of the cop rey cedes from the drive-roll, and means for adjusting said` connection to vary the extent of movement of `the arml during the movenient of the cop-supporting me."
kwith a box-like 6. lin a Winding machine, the combination with a box-like frame, of a cam-shaft journaled in bearings in said frame, a traversecam mounted on said shaft, a thread-guide reciprocated from said cam, a friction- Wheel connectedl to rotate the cam, an arrn mounted to rock on an axis at right-angles ico to the axis of the friction-Wheel, a frictiondisk journaled in a bearing at the end of the arm, a spring to slide the arm to maintain thefriction-disk in contact with the periphery f the friction-Wheel, a drive-roll journaled in bearings' at the to of the frame, a yoke-like frame pivote on the main frameto support the cop in contact withA the drive-roll, and a link connecting said frame to rock the arm to shift the friction-diskacross the periphery of the friction-Wheel to alter the speed of rotation of the cam as the axis of the cop recedes from the drive-roll. 9
7. In a Windin machine2 the combination ame having a cover fitted to its side, of a ball-bearing mounted in the main section of the e, a second balliat bearing seated in the cover of the frame, a shaft mounted in said bearings, a traversecam xedly secured on the shaft, and a spring acting on the shaft to adapt it to float in its bearings While operating to maintain the bearingsV in place in their seats in the frame. Y
8. In al Winding machine, the combination with a box-like casing, of a cover fitted to one side of the casing, ball-races seated in the main part of the casing and in the cover, a shaft, opposite ball-races slidable thereon, balls between the opposite races of each pair, a hub xedly mounted on thev shaft, and a coiled spring surrounding the shaft and acting against the hub and one of the ball-'races to yieldably maintain the mme@ parts of the bearings in place with the shaft iioating thereinf 9. 1n a change-s eed device for winding machines, the combination with a friction drive-wheel, of a driving-disk engagin the periphery ofthe drive-wheel, a roc able arm on which said disk is rotatably mounted, a cam pivoted to said arm to adaptiit to be adjusted in position thereon, a roll engaging the face of said cam, and means operated by the -growth in the Winding to slide the roll on the cam to rock the arm and shift the driving-disk with respect to the drive-Wheel.
In testimony whereof I affix my signature.
EDWARD F. PARKS.