US2036441A

US2036441A - Winding machine

Info

Publication number: US2036441A
Application number: US1427A
Authority: US
Inventors: Ernest R Swanson
Original assignee: Leesona Corp
Current assignee: Leesona Corp
Priority date: 1935-01-11
Filing date: 1935-01-11
Publication date: 1936-04-07
Anticipated expiration: 1953-04-07
Also published as: GB458807A; DE674572C; FR794946A

Description

April 7, 1936. E. R. ISWANSON 2,036,441

WINDING MACHINE Filed Jan. 11, 1935 3 Sheets-Sheet l JZZ 0.11 113 .9.

April 7, 1936- E. R. SWANSON 2,035,441

WINDING MACHINE- Filed Jan. 11, 1935 3 Sheets-Sheet? April 1, 1936. E. R. swANsoN 036,44

WINDING MACHINE Filed Jan. 11, 1935 3 Sheets-Sheet 3 Patented Apr. 7, 1936 UNITED STATES PATENT OFFICE WIN-DING MACHINE Ernest R. Swanson, Cranston, R. L, assignor to Universal Winding Company, Boston, Mass, a corporation of Massachusetts Application January ll, 1935, Serial No. 1,42? 23. Claims. i031. 242-='f.-)

This invention relates to winding machines for Fig. 3 is a detailed view in side elevation of winding cops, cones, cheeses and other forms of the circuit-breaker mounting; packages of thread, yam, cord and similar strand Fig. 4 is an end elevational view of the circuitmaterial, hereinafter referred to generally by the breaker mounting and its operating mechanism 5 term yarn; and particularly to winding ma showing the circuit-breaker open; 5 chines wherein the package is rotated by 0010- Fig. 5 is a view similar to Fig. 4 showing the tact with a drive-roll or drum. More specificircuit-breaker closed; cally, the invention consists of a ribbon-breaker, Fig. 6 is a view similar to Figs. 4 and showso-called, which operates to control the disp-osiing an auxiliary manually-operable means for tion of the turns of winding on the surface of the pair of circuit-breakers; 1c the package to prevent the formation of bands Fig. 7 is a detailed perspective view of a stopor ribbons in which the yarn coils are crowded. rest for the circuit-breaker supporting frame; together or piled. Fig. 8 is a detailed perspective view of the One object of the invention is to provide a supporting frame for the circuit-breakers; simplified mechanism incorporated in the drlv- Fig. 9 is a diagrammatic view of the electrical 151 ing means of the winding machine and opercircuit showing the circuit-breakers in open poatmg to disrupt the synchrony between the rosition; and

tation of the package and the traverse of the Fig. 10 is a view similar to Fig. 9 showing the yarn during the winding. circuit-breakers in closed position. Another obJect of the invention is to provide The present invention relates generally to w a mechanism of the type indicated for periodimeans for causing alternate acceleration and decally varying the speed ratio between the rotaceleration in. the speed of one of the winding tion of the package and the traverse of the elements of the machine, for example, the driveyarn-guiding means at recurring cycles throughroll for rotating the package; or, in other inou the Winding. stances, it may be applied to the dri e for the Another object of the invention is toprovide a yarn-traversing means when the latter is operprime-mover for the driving means or the windated independently of the drive-roll. More speing machine which operates to effect an accelciflcally, the invention relates to an electric driveration and deceleration in the speed of one ing motor with automatically-operated mechaof the winding elements to cause slippage benism for alternately opening and closing the cir- 30 tween the drive-roll and the package. cult of one or more of its windings to decelerate Still another object of the invention is to proand accelerate the speed of the motor. vide in a winding machine a mechanism for Referring to the drawings, the winding maintermittently or continuously altering the elec-= chine herein illustrated, by way of example, is 35, trical characteristics of a driving motor to cause of the double gang type comprising a plurality the latter to operate at rapidly fluctuating rates of winding units arranged in series along the of speed. opposite sides of a horizontal frame or bed 2" Another object of the invention is to provide which is supported at its ends by legs 3. Spaced a mechanism of the type indicated which is comalong the top of the bed 2 are a series of brackpletely automatic in its operation and adjusta ets t which mount bearings for the driving 0 ble to meet all requirements. shafts and other parts of the winding mecha- Further objects of the invention are set forth nism, two opposite units being located between in the following specification which describes a each pair of brackets but only one unit being preferred form of construction of the device, by herein shown. way of example, as illustrated by the accompa- In the construction of the machine as shown 45 nying drawings. In the drawings? in Fig. l the winding mechanism of each unit Fig. 1 is a front elevational view of one unit of. comprises only two principal elements, namely, a winding machine incorporating the novel fee.- the winding-mandrel or spindle 15 on which the tures of the present invention and showing the yarn-receiver or cop-tube C is rotatably supmover; yarn-receiver and inwhich is embodied the Fig. 2 is an end elevational view of the driving means for traversing the yarn back and forth mechanism of the winding machine'illustrated axially of the package being wound. In this in Fig. 1 shown with the outer casing removed to form of construction the usual reciprocating 55 disclose circuit-breaker control-mechanism; thread-guide is dispensed with, the drive-roll 5 so control-mechanism for the variable speed primeported, and the drive-roll in for rotating the my copending application,

having its peripheral surface provided with a helical groove or grooves 8 and 9 extending in opposite directions and adapted to receive the strand of yarn to guide it back and forth between the ends of the package. This particular form of traversing means is shown and described in U. S. Letters Patent No. 1,749,355, dated March 4, 1930. It is to be understood, however, that the present ribbon-breaker or speed-changing device is adapted for use on winding machines of other types, for example, those wherein the package is driven by contact with a driveroll and the yarn traversed by means of a reciprocating guide as illustrated and described in U. S. Letters Patent No. 1,656,088 issued January 10, 1928, or with any other arrangement of drum-driven winders.

In the form of construction shown in Fig. 1 the drive-rolls ID are carried on and rotated by a horizontal shaft H joumaled in ball bearings 12 on the bracket 4; the shaft ll being extended throughout the whole length of the gang machine to carry the drive-rolls for any desired number of winding units. A second parallel shaft I3, also journaled in bearings on the bracket 4, carries the drive-rolls, not herein shown, for the other series of winding units arranged on the opposite side of the winding frame or at the right-hand side as viewed in Fig. 2.

The present machine is shown as adapted for winding packages of conical form with the yarn built up on a suitable axial core or receiver, a wooden or fiber conical cop-tube C being illustrated in Fig. 1 as mounted to rotate on the winding-spindle or mandrel IS. The windingspindle i5 is swiveled to the forward end of a weighted arm it which is pivotally supported at its rearward end to adapt the surface of the yarn-receiver C, or of the package P, to be held in contact with;the periphery of the drive-roll In. As the yarn is built up on the cop-tube C it forces the latter upwardly with the arm [6 swinging on its pivot in the manner common to machines of the present type. Although not herein shown a suitable stopping mechanism is usually employed with each unit of the machine to automatically stop the winding operation by raising the package away from the drive-roll Hi in the manner illustrated and described in U. S. Letters Patent No. 1,895,741 issued January 31, 1933.

The driving transmission for i the drive-roll shafts is similar to that shown and described in Serial No. 741,012, filed August 22, 1934, and is therefore described but briefly herein. Bolted to the top of the bed 2 are a pair of spaced brackets or cross-frames 20 and 2! for supporting the ends of the driveroll shafts Ii and I3 and the driving transmission therefor. The drive-roll shaft Ii projects beyond the bearing I2 in the bracket 4 with its reduced extremity 22 journaled in a ball bearing 25 on the cross-frame 26, as indicated generally in Fig. 1. A belt-pulley 30 is keyed at 28 to the reduced end 22 of the shaft Ii and held against axial movement by a nut 29. The periphery of the pulley 30 is provided with spaced V-shaped grooves 21 for receiving a pair of driving belts as laterdescribed.

The opposite drive-roll shaft I 3 is somewhat longer than the shaft I I with its reduced end projecting through a clearance opening in the frame member 20 and journaled in a ball bearing 32 in the frame member 2|. Mounted fast on the reduced end of the shaft I3 is a pulley aoaaaei 35 of the same form and size as the pulley previously described. The pulley 35 is suitably keyed to the shaft l3 and held against axial movement by a nut 3| as shown in Fig. 2.

Arranged for vertical adjustment on the facing sides of the frame members 20 and 2| are two complementary brackets 31 and 38 received in grooves or guideways on the frames and held in adjusted position by means of disks l0 eccentrically mounted on a stud-shaft 42, see Fig. 2. The ends ll of the shaft 42 project through bearing apertures in the cross-frames 20 and II with nuts 43 screwed onto their threaded extremities and set up against the sides of the frames to hold the shaft from turning. The peripheries of the eccentric disks 0 engage the opposite sides of horizontal slots 45 formed in the brackets 31 and 38 as shown in Fig. 2.

An enclosing housing or cradle 50 mountedbetween the cross frames 20 and 2| carries the driving transmission for the drive-shafts H and I3. The housing 50 is suspended between the brackets I! and 38 on a rock-shaft 52 passing through'bearing apertures 53 and 54 in the end walls of the housing and extending into bearing apertures 55 and 56 in the brackets. The rearward end of the rock-shaft 52 extends beyond the cross-frame II as shown in Fig. l for supporting the circuit-breaking mechanism to be later described.

The housing 50 is prevented from movement about the rock-shaft 52 by arms 58 and 59 engaging the sides of the housing. ,The arms II and 59 are slidably mounted on the machine bed 2 at opposite sides of the housing 50 and are moved into engagement with the walls of the housing by adjusting screws 60 and BI carried in depending webs on the arms and engaging the sides of the bed. The arms 58 and 59 are held against the top of the bed 2 by bolts 02 passing through slots in their ends, see Fig. 1. The housing 50 may be vertically adjusted to any desired position with respect to the crossframes 20 and 2! by rotation of the eccentric disks 0 on the stud-shaft 42 A pair of driving shafts 6t and 65 are mounted in bearings in the housing 58 in spaced parallel relation below the rock-shaft 52. As shown in Fig. 1, the drive-shaft 66 is journaled in bearings BGVand El on the opopsite end walls of the housing with its forward end extending beyond the held axially by a nut I0. The periphery of the pulley 68 is provided with spaced V-shaped grooves in alinement with grooves 21 on the pulley 36, previously mentioned, and the two pulleys are connected by a pair of endless belts 1i extending therebetween. The opposite end of the shaft 64 terminates in the bearing 61 in the end wall of the housing, and adjacent the bearing aspur-gear I2 is fixed on the shaft. The shaft 64 is also provided with aworm 18 intermediate its ends and within the housing II which may be formed integral with the shaft or constructed separate therefrom and secured fixedly thereon.

' The shaft 65 is similarly mounted in suitable bearings in the end walls of the housing I! with its rearward end extending outwardly from the housing to receive a pair of pulleys II and I6 keyed thereto and held axially thereon by a nut 11. The pulley I6 is alined with the pulley 35 on the shaft l3 and the two pulleys are connected by a pair of belts 18. Within the housing is a spur-gear l8 fixedly mounted on the shaft 55 and intermeshing with the gear 12 on the shaft 54 to connect the two shafts to be driven together. A cam-shaft is suitably journaled in bearings 8I and 82, in the side walls of the housing 50 and is provided with a suitable worm-wheel or gear 83 engaging the worm 13 on the driving shaft 84. A cam fixed to the shaft 80 intermediate its ends has a helical groove 81 to receive the roller 88 of a follower arm 89 fixedly connected to the rockshaft 52. As most clearly shown in Fig. l, the follower arm 89 depends from a hub keyed to the shaft 52 and held against axial movement by a set-screw 9I. With the construction described the cam-shaft 80 is rotated at a reduced speed from the driving shaft 64 to cause the cam 86 to oscillate the rock-shaft 52 by the engagement of its groove 81 with the roll 88 on the follower arm 89 on the rock-shaft. The rockshaft 52 may be continuously rocked to its extreme alternate positions or may be intermittently actuated in accordance with the contour of the cam-groove 81 which may be varied from the form shown in the drawings.

A prime-mover for driving the shaft 55 is provided in the form of an electric motor which is mounted on a suitable pedestal 96 adjustably supported from a base 91 by means of studs 98 and adjusting nuts 99. The motor 95 is positioned below the bed 2 at the rearward end of the winding machine, as viewed in Fig. 2, and in driving relation to the shaft 65. Mounted on the armature shaft I00 of the motor 95 is a doublegrooved driving pulley IOI disposed in alinement with the pulley 15, the two pulleys being connected by a pair of belts I02.

In accordance with the present invention means are provided. for intermittently or continuously varying the speed of the prime-mover or motor to cause slippage between the surface of the package and the periphery of the driveroll whereby tobreak the synchronism between the rotative speed of the package and the rate of traverse of the yarn. Broadly, the invention contemplates means for varying the electrical characteristics of the driving motor to cause alternate deceleration and acceleration in its speed which is transmitted to the drive-roll III. In a preferred embodiment of the invention, as indicated diagrammatically in Figs; 9 and 10, the driving motor 95 is of the type havingthree phase-windings I05, a source I08 of a usual three phase power line through a circuit-breaker I09 for starting and stopping the motor. In circuit with two of the phase-windings I05 and I06 are automaticallyoperated circuit-breakers H0 and III for alternately opening and closing the motor winding circuits to cause a deceleration and acceleration in the speed of the-motor.

The circuit-breakers are preferably of the tilting liquid-contact type employing mercury and commonly known as a mercuryswitch; it having been found that these switches operate satisfactorily over a long period of time and entirely eliminate any fire hazard because of their enclosed construction. The circuit-breakers are preferably operated directly by the driving mechanism of the machine. The inven tion, however, is not limited to the-form of circuit-breakers shown nor to circuit-breakers operated directly by the winding machine as any other suitable form of current-interrupting means may be used, and their operation might be controlled by mechanism independent of the I08 and I01 connected with the movement of the rock-shaft.

winding machine to perform the desired function.

In the present embodiment of the invention, as shown in Figs. 3 to 6, the circuit-breakers H0 and III are mounted on a supporting bracket II3 carried by theextended end 51 of the rockshaft 52 with a stop-rest II2 for controlling their position. The stop-rest I I2 and supporting bracket I I3 are adapted for oscillatory movement with the rock-shaft 52 to tilt the circuit-breakers or switches H0 and III from an open position as shown in Fig. 4 to a closed position as shown in Fig. 5. The stop-rest II2, shown in detail in Fig. 7, is constructed with a hub I for embracing the rock-shaft extension 51, from which extends an .arm II5 terminating in an offset end portion II6 to form a seat for the circuit-breaker supporting bracket H3. The stop-rest IIZ is fixedly held in position on the rock-shaft extension 51 by means of a set-screw III, as shown in Fig. 3. At the forward end of the offset portion IIB of its arm H5 is a pin M8 for connecting a spring II9 employed for a purpose as later explained.

The circuit-breaker supporting bracket H3, 7

shown in detail in Fig. 8, comprises a hub portion I2Ii apertured as at I2I to embrace the shaft-extension 5i and having a laterally extending arm I22 adapted to overlie and engage the offset portion III; of the stop-rest arm H5. The end of the arm I22 is apertured as at I23 to receive a set-screw I28 which engages the offset portion N6 of the stop-rest arm II5 to provide for adjusting the position of the supporting bracket II3 with respect to the stop-rest. The supporting bracket H3 is mounted free to turn on the shaft-extension 51 but is resiliently held in engagement with the stop-rest M2 by means of the spring II9 connected to a pin I25 at the outer end of its arm I22 and to the pin II8 on the arm II5 of the rest. By these connections both the stop-rest I I2 which is fixed to the shaft= extension 51, and the supporting bracket'I I3 are rocked as a unit with the rock-shaft 52 during thenormal operation of the machine. Formed integral with and positioned directly above the hub portion I20 of the bracket H3 is a platform I26 having threaded holes at I21 to receive the screws for two pairs of open-ended clips I28 that support the mercury switches H0 and III. Pro- 5 jecting laterally from the end of the arm I22 is a pin I29 which is engaged by manually-operable means, to be later described, to rock the supporting bracket II? to shift the circuit-breakers or switches to a closed position independently of Extending outwardly from the hub I20 below and angu larly in relation to the arm I22 is a stop-arm I30 for engagement with the under side of the offset portion IIG of the stop-rest II2 to limit the rocking movement of the bracket H3 in a direction toward the right as viewed in Fig. 6. As shown in Figs. 3, 4, 5 and 6, the supporting bracket II3 carries a protecting hood I3I fastened thereto by screws I32 and I33 threaded into the hub I20 and the side of the arm I22. The supporting bracket II3 is held in place on the shaft-extension 51 by a collar I34 abutting the side of its hub portion I20;

The manually-operable means for tilting the supporting bracket, 3 to close the switches are shown in Figs. 1, 3 and 6. A handle I35 projects from a casing I39 that encloses the machine and lies closely adjacent the end of the rockshaft extension 51. The handle I36 has a shaft I39 that extends through a bearing plate I40; fixed to the casing I39 by means of screws MI. The handle I38 is formed with a flange I31 which abuts one side of the plate I40 and is held in position by the hub portion I42 of an arm I43 fixed to the shaft I38 by a set-screw M4 that abuts the opposite side of the plate. The arm I43 is positioned directly below the laterally extending pin I29 on the supporting bracket M3 to adapt it to engage therewith by turning the handle I36 whereby to rotate the supporting bracket I13 on the shaft-extension 51 to move it away from the stop-rest II2 against the action of the spring H9. This manuallyoperable means for the switches or circuit-breakers III} and ill is for the purpose of closing the circuit when it is desired to start the motor, at which time all three phase-windings must be energized.

Having now described the construction and arrangement of the various parts of the mechanism, the mode of operation of the winding machine and ribbon-breaker will next be ex-- plained. Referring to Fig. 1 of the drawings, the machine is prepared for winding by mounting a suitable wooden or fiber cone-tube or yarn-receiver C to rotate on the spindle I5. For this purpose the arm I is raised on its pivot and the spindle I5 swung outwardly on its swiveled joint at the outer end of the arm in accordance with the usual method. After the cop-tube C is in place the spindle I5 is swung back into position above the drive-roll I0 and the arm l6 loweredto bring the surface of the tube into driving contact with the periphery of the roll. The strand of yarn y'or other material is led up from its source of supply through a tensiondevice, not herein illustrated, thence drawn across the periphery of the drive-roll ill and its end attached to the cop-tube C in any suitable manner.

The housing 50 carrying the driving transmission is adjusted vertically to properly tension the belts H and it by loosening the nuts 33 on the ends of the stud-shaft 42, which allows the en tire assembly of housing 50, rock-shaft 52 and brackets 3! and 38 to move downwardly. The weight of the assembly is such as to properly tension the belts by moving the housing 58 to its operating position. The nuts 43 are then tightened in position and the arms 53 and 59 adjuste'd by means of the screws 50 and 6! to sin gage and rigidly hold the housing 53 against lateral movement.

The operation of the machine is started by closing the motor starting switch I99, see Figs. 2, 9 and 10, while at the same time the phasewinding circuit-breakers III} and II! are closed by rotating-the handle I36 in a clockwise direction, as viewed in Fig. 6, so that the arm I43 engages the laterally extending pin I25 to rock the frame Ill-l against the action of the spring H9. With all three windings in'eircuit the motor will automatically come up to its maximum speed and through the belts I02 will drive the shaft $5 in a clockwise direction. 'After the motor has attained its maximum speed the handle H6 is released so that the spring ll 9 will move the supporting bracket H3 into engagement with the stop-rest Il2, whereafter the two elements will oscillate as a unit with the rockshaft-extension 57. The parallel driving shaft 54 is driven in a counterclockwise direction by the shaft 65 through the intermeshing gears I2 and I9 fixed to the two shafts respectively.

' from the drive-roll l0 a,oso,441

The shaft II carrying the drive-rolls ID on one side of the machine is driven from the shaft 54 by the connecting belts II at the forward end of the housing, as viewed in Fig. 1.

Also, on the opposite side of the machine, as more clearly shown in Fig. 2, the shaft I3 carries a similar series of drive-rolls and cops which are prepared for winding, and this shaft I 3 is driven directly from the driving shaft 65 through the belts I8 connecting the two shafts. From the above it will be apparent that the two gangs of drive-rolls I0 on opposite sides of the machine are driven by the motor and in opposite directions of rotation so that yarn may be supplied from either side of the machine.

As all the winding units operate in the same manner it will be sufficient to explain the mode of operation of one of them. The drive-roll II) is rotated continuously and as the cop-tube C makes contact with its periphery it will be driven from the roll to wind on the yarn. As the yarn is taken up by the rotation of the cop-tube C the strand 3 enters the helical groove or grooves 8 and 9 on the periphery of the roll to be traversed thereby to deposit it on the receiver in helical coils which make several turns first in one direction and then in the opposite direction.

-In this way the yarn is given a continuous traversefrom one end of the cop-tube to the other and back again to build up a succession of courses forming overlying layers which constitute the yarn body or package.

At the start of the winding the rotative speed of the cop-tube C will have a certain ratio to that of the drive-roll I0 depending upon their respective diameters and the yarn will be laid from end to end of the tube with a corresponding ratio in the number of coils to the number of turns in the grooves 8 and 9. As the yarn builds up on the cop-tube C the latter recedes and with the increase in diameter of the yarn mass its angular velocity or speed of rotation is gradually lessened, due to the increasing disparity between its diameter and that of the drive-roll. In other words, there is a constant change in ratio between the rotative speed of the package and drive-roll and, consequently, there will be a corresponding variation in the number of turns laid on the surface of the package, or in the wind as it is called.

At the start of the winding the yarn coils are laid in open or spaced relationship, but when the wind changes the spacing between the turns is lessened and the coils gradually close up and eventually tend to crowd together in bands or ribbons. This crowding or piling of the yarn coils takes place each time the wind changes from a greater to a lesser number of even turns and ordinarily causes a ribbon wind" on the surface of the package. When several coils are laid over each other in the ribbon they tend to slip and slide out of place and roll on the surface of the package. This disturbs the twist of the yarn and tends to weaken it so that its quality is impaired and, as another serious defect, the ribbon prevents the yarn from delivering freely when it is drawn off over the end of the package. The present invention operates to overcome this defect of ribbon wind in drum-wound packages by periodically varying the ratio between the rotation of the package and the traverse of the yarn thereon.

After the motor has attained maximum speed and the handle I36 has been released, the driving shaft 64 operates through the worm I3 and worm-wheel 03 on the cam-shaft 80 to oscillate the rock-shaft 52 by means of its follower arm connection with the cam-groove 81. As the switches I I and III are mounted on the supporting bracket M3 for oscillation as a unit with the rock-shaft extension 51 they will be continuously tilted from open to closed position. The switches H0 and III, being in circuit with the phase-windings I05 and I06, will therefore alternately open and close the circuit windings to cause variations in the speed of the motor.

As shown in Fig. 4, the bracket H3 carrying thecircuit-breakers H0 and III is tilted to shift the latter to open position, at which time the phase-windings I05 and I06 are open circuited as indicated in Fig. 9 and the motor operated on a single phase which causes a material reduction in its speed. When the rock-shaft 52 is rocked back in the opposite direction to shift the circuit-breakers or switches H0 and III to closed position as shown in Fig. 5 the phasewindings I05 and I06 are again connected in circuit with the source of current I08, thereby causing a sudden pick-up in the speed of the .25 motor.

As the speed of the motoris. alternately decelerated and accelerated, as above explained, a corresponding varied speed is transmitted to the drive-roll I0. This variation in the speed of the drive-roll has the effect to periodically vary the rate of traverse of the yarn following the helical groove or grooves on the roll. On the other hand, due to the momentum and inertia of the package during deceleration and acceleration, respectively, the peripheral speed of the package will be greater or less than the peripheral speed of the drive-roll so that its surface will slip or skid" on the periphery of the roll and as a result thereof the synchrony of winding speed to yarn traverse is disrupted at frequentintervals to prevent ribbon winding. As an example, it has been determined that with the machine operating at a speed to wind '720 yards oi yarn per minute, if the speed of the motor is decelerated and accelerated once ,for every 13 yards of yarn wound, or approximately 40 times per minute, ribbon winding is effectually eliminated. It also appears from observation of the machine in operation that the greatest effective slippage occurs between the drive-roll and the package during the acceleration in speed of the motor which is more rapid than the deceleration. It is to be understood, however, that the rate of the cyclic changes in the speed of the motor is capable of wide ranges of variation and that the invention is intended to include any change-speed motor capable of producing the desired results without limitation as to the example above referred to or to the slippage of 50 the package that occurs only during acceleraion.

/ To vary the effect of the slippage of the pack-- age on the roll the time periods during which the switches I I0 and III are closed or open may be adjusted by the set-screw I24 to alter the angular position of the supporting bracket H3 on the shaft-extension 51. This adjustment may be made to effect any operative position between the extreme positions where the switches are constantly open or constantly closed whereby to vary the range of movement of the switches as desired.

Although the circuit-breaking mechanism has been shown in the drawings as applied to a 7 three phase motor it is to be understood that the .yam on invention is not limited to the form shown and may be applied to either a direct or alternating current motor having single or multiple phasewindings, or an induction or repulsion type of motor having either a squirrel cage or wound type of rotor.

I Although the phase-winding circuit-breakers have been illustrated and described as applied to a plurality of the windings, they can as well be applied to only one or to all of the phasewindings; or a single circuit-breaker may be used in circuit with a plurality of the phase-windings. Where a direct current motor is used the circuit-breaking mechanism may operate with a resistance winding to continuously or periodically vary the speed.

It will be observed from the foregoing description that the present invention provides for in-' terrupting the synchrony in the ratio oi winding speed to traverse of the yarn at recurring cycles by automatically altering the electrical char teristics of the driving motor to cause the lair to operate at rapidly fluctuating rates of speed.

It will also be apparent to those skilled in the art that various changes may be made in the form and type of apparatus employed. For example, other suitable types of circuit-breakers and operating means therefor may be used in place of those shown and described; and other types of motors in place of that illustrated. It will also be apparent that the present form of ribbon-breaker may be applied to winding machines of different type from that herein illustrated and described. Therefore, without limiting myself in this respect, I claim:

1. In a winding machine, the combination of: means for rotatably supporting a package, means to rotate the package, means for traversing yarn on the package, a motor operatively connected to drive the package-rotating means, and automatically-operated control means for periodically increasing and decreasing the speed of the motor during the winding operation to interrupt the synchronism. between the rotation of the package and the traverse of the yarn.

2. In a winding machine, the combination of means for rotatably supporting a package, means to rotate the package, means for traversing the package, a motor operatively connected to drive the yam-traversing means, and automatically-operated control means for periodically increasing and decreasing the speed of the motor during the winding operation to interrupt the synchronism between the rotation of the package and the traverse of the yarn.

3. In a winding machine, the combination or means for rotatably supporting a package, means to rotate the package, means for traversing yarn on the package, an electric motor operatively connected with the package-rotating means, and current controlling means for periodically varying the speed of the motor to interrupt the synchronism between the rotation of the package and the traverse of the yarn.

4. In a winding machine, the combination of means for rotatably supporting a package, means to rotate the package, means for traversing yarn on the package, an electric motor operatively connected with the package-rotating means, and current controlling means actuated from the motor for periodically varying its speed to cause slippage between the package-rotating means and the package. I

5. In a winding machine, the combination of means for rotatably supporting a package, means 7 connected with the package-rotating means, a

circuit-breaker in the motor circuit, and means driven by the motor for periodically actuating the circuit-breaker to cause a variation in the speed of the motor to effect slippage between the package-rotating means and the package.

7. In a winding machine, the combination of means for rotatably supporting a package, a grooved drive-roll for rotating the package by peripheral contact therewith while acting to traverse the yam'longitudinally thereon, an electric motor operatively connected with the driveroll, a circuit-breaker in the motor circuit, and means actuated by the motor for oscillating the circuit-breaker to alternately open and close the circuit whereby to vary the speed of the motor and cause slippage between the drive-roll and pmkage.

8. In a winding machine, the combination of means for rotatably supporting a package, means to rotate the package, means for traversing yarn on the package, an electric motor operatively connected with the package-rotating means, a source of current for the motor, a tilting liquideontact circuit-breaker in circuit with the motor and source of current, and means for oscillating the circuit-breaker to alternately open and close the motor circuit and cause slippage between the package-rotating means and the package.

9. In a winding machine, the combination of means i'or rotatably supporting a package, a grooved drive-roll for rotating the package by peripheral contact therewith while acting to traverse the yarn longitudinally thereon, an electric motor operatively connected with the driveroil, a source of current for the motor, a tilting liquid-contact circuit-breaker in circuit with the motor and source of current, and means actuated from the motor for oscillating the cirsuit-breaker to. alternately open and close the motor circuit whereby to vary the speed of the drive-roll.

10. In a winding machine, the combination of means for rotatably supporting a package, means to rotate the package, means for traversing yarn on the package, an electric motor for driving one of said means, said motor having a plurality of windings, and means for intermittently opening the circuit of one or more of the windings to vary the speed of the motor and the means driven thereby to change the ratio of package peripheral speed to traverse of the yarn thereon.

11. In a winding machine, the combination of means for rotatably supporting a package, a grooved drive-roll for rotating the package by peripheral contact therewith while acting to traverse the yarn longitudinally thereon, an electric motor for driving the drive-roll, said motor having a plurality of windings, and means for alternately opening and closing the circuit of one or more of the windings to decelerate and accelerate the speed of the motor.

12. In a winding machine, the combination of means for rotatably supporting a package and traversing yarn thereon, a driving-shaft for said means, an electric motor operatively connected with the driving-shaft, said motor having a plurality of windings, a circuit-breaker in the circuit of one or more of the windings, and means operated from the driving-shaft tor alternately actuating the circuit-breaker to open and close the circuit and vary the speed of the driving-shaft.

13. In a winding machine, the combination of means for rotatably supporting a package and traversing yarn thereon, a driving-shaft for said means, an electric motor for rotating the driving-shaft, said motor having a plurality of windings, a cam actuated by the driving-shaft, a tilting liquid-contact circuit-breaker in circuit with one or more of the windings, and a lever operated by the cam for intermittently tilting the circuit-breaker to alternately open and close the winding circuit and vary the speed 01' the motor.

14. In a winding machine, the combination of a driving-shaft, an electric motor for rotating the driving-shaft, said motor having three phase-windings, circuit-breakers in circuit with two of the windings, and means operatively connected with the driving-shaft for alternately opening and closing the circuit-breakers to vary the speed of the motor.

15. In a winding machine, the combination of means for rotatably supporting. a package and traversing yarn thereon, an electric motor for driving said means, said motor having a plurality of windings, a circuit-breaker in circuit with at least one of the windings, a rock-shaft for operating the circuit-breaker, and means operated from the motor for continuously oscillating the rock-shaft to alternately open and close the circuit-breaker and vary the speed of the motor.

16. In a winding machine, a frame, a drivingshaft journaled. in the frame, a rock-shaft in the frame having a depending arm, a cam rotatably mounted in the frame and operatively connected with the driving-shaft, said cam engaging the arm to periodically oscillate the shaft, an electric motor for rotating the driving shaft, said motor having three phase-windings, and liquidcontact circuit-breakers in circuit with two of the windings, said circuit-breakers being actuated by the rock-shaft to open and close the said circuits to alternately decelerate and accelerate the speed of the motor.

,17. In a winding machine, a driving shaft, a worm thereon, a cam-shaft, a worm-gear on the cam-shaft in mesh with the worm, a cam on the cam-shaft, a rock-shaft, a depending arm on the rock-shaft engaging the earn, an electric motor having multiple phase-windings, and liquid-contact circuit-breakers on the rock-shaft in circuit with two of the motor windings and operative to open and close the two winding circuits to vary the speed of the motor.

18. In a winding machine, the combination of 7 means for rotatably supporting a package and means for rotatably supporting a package and u breaker,

traversing yarn thereon, a driving-shaft connected to drive said means, an electric motor for the driving-shaft, said motor having a plurality of windings, a tilting liquid-contact circult-breaker in circuit with one or more of the windings, a-rock-shaft for actuating the circuitmeans actuated by the driving-shaft for continuously oscillating the rock-shaft to open and closethe circuit-breaker and vary the speed of the motor, and manually-operative means for tilting the circuit-breaker to close the circuit to all of the windings to start the motor.

20. In a winding machine, the combination of means for rotatably supporting two series of yarn packages, two series of drive-rolls for rotating the packages, means for traversing yarn on the packages, a driving-shaft, means connecting the driving-shaft to rotate the two series of drive-rolls, an electric motor operatively connected with the driving-shaft and having a plurality of phase-windings, circuit-breakers in I lug-shaft in circuit with one or moreof the phase-windings, and means for alternately opening and closing the circuit-breakers to decelerate and accelerate the speed of the motor and of the drive-rolls to prevent ribbon winding on the package.

21. In a winding machine, a frame, parallel shafts mounted on opposite sides of the frame, a plurality of drive-rolls on said shafts, a drivthe frame between the parallel shafts, means for driving the parallel shafts from the driving-shaft, an electric motor operatively connected with the driving-shaft and havinga plurality of phase-windings, a circuitbreaker in circuit with one or more of the phasewindings, and means continuously operated from the driving-shaft for alternately opening and closing the circuit-breaker to vary the speed of the motor and thereby the speed of the driveroiis to prevent ribbon ERNEST R. SWANSON.

thereby the speed winding on the package. 20