US2692735A

US2692735A - Winding machine

Info

Publication number: US2692735A
Application number: US217327A
Authority: US
Inventors: Jr Andrew S Gill
Original assignee: Eaton Manufacturing Co
Current assignee: Eaton Corp
Priority date: 1951-03-24
Filing date: 1951-03-24
Publication date: 1954-10-26
Anticipated expiration: 1971-10-26

Description

061;. 26, 1954 s, JR 7 V 7 2,692,735

WINDING MACHINE Filed March 24, 1951 7 Sheets-Sheet 1 INVENTOR ANDREW S. Gu J2.

ATTORNEYS Oct. 26, 1954 v SGILL R 2,692,735

I WINDING MACHINE Filed March 24, 1951 7 Sheets-Sheet 2 INVENTOR. ANDREW S Gnu. JR

ATTORNEYS Oct. 26,1954 A. s. GILL, JR 2,692,735

WINDING MACHINE Filed March 24, 1951 7 Sheets-Sheet s INVENTOR ANDREW 5; 6m. JR.

m zp' ATTORNEYS Oct. 26, 1954 s, ILL, JR 2,692,735

WINDING MACHINE Filed March 24, 1951 7 SheetsSheet 4 INVENTOR. ANDREW S. Gnu. JR

a Wa 7 ATTORNEYS Oct. 26, 1954 A. s. GILL, JR 2,692,735

WINDING MACHINE Filed March 24, 1951 1 Sheets-Sheet 5' INVENTOR. ANDREW S. Gnu. JR.

ATTORM EYS 7 Sheets-Sheet 6 Filed March 24, 1951 INVENTOR.

ANDREW 3. GILL. JR.

mm; W- ya SKA ATTORNEYS Oct. 26, 1954 s. GILL, JR

7 Sheets-Sheet 7 I IE J.U

INVEN TOR.

Au DREW S. Gnu. JR

ATTORNEYS Patented Oct. 26, 1954 UNITED STATES PATENT OFFICE 2,692,735 WINDING MACHINE Andrew S. Gill; Jr., Maple Heights, Ohio, assignor to Eaton Manufacturing Company, Cleveland, Ohio, a corporation of Ohio Application'March'M, 1951, Serial No. 217,327

19 Claims. 1 This invention relates to winding machines and more particularly to improvements in said machines and in the control mechanism therefor.

Broadly the invention comprehends the pr0- vision of machines for winding thread, yarn and the like from skeins onto spools having control mechanism associated therewith effective to an tomatically cause a nibbling action upon the material being wound whenthe' material becomes excessively tensioned dueto snags, tangles or the like interfering with its normally free movement between the skein and spoolin the winding thereof onto the spool to eliminate said snags or the like in most instances without requiring complete cessation of the'winding operation. The control mechanism includes electromagneticauy operated and controlled brake and clutch devices and an electrical circuit therefor having a switch as a part thereof which is actuated whenthe material being wound exceeds a predetermined es- I tabllshed winding tension to initiate operationof the electrical circuit.

Although numerous winding machines have been devised, manufactured and used none have prior to the present development provided mechanism which will operate to eliminate tangles or other like interferences of a specific nature occuring in the material in-the course or its winding operation Without requiring the completecessation of the winding operation and without dam age resulting to the material being wound. The present mechanism is further adapted to effect a complete cessation of the winding operation if the interference encountered isof a'certa'in magnitude which requires manual handling Among the several objects of the invention is the provision of a winding machine having e1ectromagnetically operated brake and clutch devices incorporated therein controlled as by an electrical circuit actuated by the tension of the material being wound that is effective to eliminate a great majority of tangles or like interference occurring at the skein in the winding oi the material upon a spool therefrom without necessitating the complete cessation of the winding operation; that will eliminate said tangles without causing damage to or breakage of the material; and that willoperate to effect cessation of the winding operationwhen the tangles or other interferences are of such a nature that cannot be eliminated without requirement for manual handling thereof; that operates upon the" encrgization of the electrical circuit to effect an by the material is nibble-d or wound" upon' the" 2 spool ata slow pulsing rate until either the tangle is eliminated or the winding operation is completely stopped.

Other objects and advantages or the invention will appear from the following description taken in connection with the drawings forming a art of the specification; and in which:

Fig. 1 isa front elevation view of a winding machine constituting the basis of the invention;

Fig. 2 is an end View of the winding machine taken substantially along lines 2-2 of Fig.1;

Fig. 3 is an end view of; the winding machine taken substantially along lines 3---3 oi Fig. 1;

Fig. 4 is anenlarged fragmentary front elevation and partially cross-sectionalized view of the brake and clutchdeviceincorporated in the machine of- Fig. 1;

Fig. 5 is a schematic illustration of the electrical control circuit for the windingmachine;

Fig. 6 isan oscillograph test curve illustrating a normal winding operation of the machine of Fig. 1;

Fig. '7 is another oscillograph test curve illustrating a winding operation of the machine of Fig. 1 when a nibbling operation thereof is encountered;

Fig. 8 is a modified form of material tensioning mechanism from that employed'in the-machine of m 2;

Fig. 9 is a modifiedform ofelectrical control circuit for the winding machine as employing the tensioning mechanism of Fig; 8; and" Fig. 10 is a modified form of clutch and'brake device of Fig. 4;

Similar reference characters indicate corresponding partsthroughout the several views Of the drawings.

The present winding machine and control mechanism therefor was devised for the purpose of accomplishing a result-in the art of winding material such as yarn, thread and the like upon a spool as it is removed from'a' skein whereby said winding can progress continuously although tangles normally occurring in theremoval of the material from the skein are present, tending toward injury to or breakage of the material, said result of which hasnever heretofore been done.

The tangles occurring in the material which usually occur at the skein acting to overstress the material resulting in either damage to or breakage of thematerial if they are not elimi-- nated or the winding operation stopped are here'- in eliminated in most instances, if not too severe, without necessity of completely stopping winding operation by a progressive nibbling or tugging action being imposed upon the material at the spool through a controlled alternate rotation and braking of the rotation thereof, said. rotation being of predetermined small inc ements. By so tugging at the material being wound whenever a tangle occurs acting to tension the material beyond a predetermined amount the tangle is eliminated and the material is once again permitted to assume its normal movement between the skein and spool.

As a means of effecting a nibbling or tugging of the material being wound associated electromagnetically operated brake and clutch devices are incorporated in the machine such that the clutch is normally engaged when a winding operation is desired ffective to transmit power therethrough from a driving source to rotate the spool of the machine and cause a winding of material therein as it is simultaneously removed from a skein. The brake device on the other hand is operative substantially simultaneously with the disengagement of the clutch device to effect a sudden stopping of rotation of the spool. The brake and clutch devices each have their coils arranged in an electrical control circuit therefor, said circuit having a switch therein which is tripped to close the circuit and initiate the operation thereof when the material being wound upon the spool exceeds a certain predetermined tension. The tension permitted on the material varies with the type of material being wound but is so established in any case that the permitting of a much greater tension would result in damage to the material even though it would not be great enough to cause the breakage thereof. The electrical circuit for the brake and clutch devices includes heat actuated switches and relays operative upon energization of the circuit to establish a predetermined timed cycle of alternate operation of the brake and clutch devices so that a nibbling action is imposed on the material being wound. If the nibbling operation succeeds in undoing the tangle in the material which caused the tensioning thereof sufficient to trip the switch of the circuit to place said circuit in oper ation, said switch will again automatically be opened and the normal winding operation of the machine will be resumed at least until another tangle or the like is encountered. When a tangle of a serious nature is encountered the nibbling operation will continue for a predetermined time as established by the presetting of one of the heat actuated switches in the circuit; whereupon if the tangle is not removed the main electrical circuit for the operation of the machine is opened and the winding operation is completely stopped. The winding operation thereafter cannot be resumed until the switch of the main circuit is manually reset, thereby informing one operating the machine that the tangle must be manually removed before the machine should be again placed in operation. As an alternative to the use of the last mentioned heat actuated switch a trip switch can be employed engageable upon the excessive tensioning of the material to immediately engage the brake of the machine effective to instantaneously retard rotation of the spool and thus prevent further winding until the cause is eliminated.

Referring to the drawings for more specific details of the invention it represents generally a winding machine comprising basically a main frame l2, a rotating spindle M, rotatable cam mechanism l6 and a clutch and brake mechanism i3.

The spindle I4 is journalled in the frame at spaced points and has a combination brake and clutch plate 20 splined near one end 22 thereon, the purpose of which will hereinafter appear, a pulley 2d fixedly secured on end 22 thereof, the purpose of which will hereinafter appear and a spool 23 mounted upon its opposite axial end from end 22.

The cam mechanism 16 includes a cylinder 23, having a cam slot 3B in its peripheral surface, including a shaft 32 fixedly secured thereto journalled in the frame 12 and a traverse bar 3 1 including a pin 36 engageable in the cam slot 30.

The shaft 32 of cylinder 28 is driven by way of a gear mechanism, not shown, enclosed in gear box 38 from a belt it having driving corn nection between pulley 2t and a pulley 12 associated with the gear mechanism in gear box it. The gear mechanism provides for the proper relate-d speed of the cam mechanism to that of the spindle.

The traverse bar is is supported for axial movement upon a rod 36 forming part of main frame 12 and includes a guide as for the material to be wound upon the spool 25, said guide being adapted to to bear lightly upon the outer periph cry of the material as it is wound upon the spool.

The clutch and brake mechanism includes in addition to the clutch and brake plate 2% a driven input clutch member it; which together with the plate 2t) constitutes a magnetic clutch device if; and a stationary brake member 5d which together with the plate 28 constitutes a magnetic brake device 52, said member 50 being rigidly secured upon frame l 2 and journalled in relation to spindle id intermediate the plate 20 and pulley 2% whereas the clutch member (i6 is journalled on spindle i l by way of bearings 54 mountedon the spindle.

Clutch member 48 has a pulley 553 formed therein and provides a U-shaped cross-sectional portion having an annular electromagnetic coil 5? mounted in nestled relation between the arms of the U-shaped portions, said coil being supplied current by way of current conducting brush 58 having current conducting engagement upon a conductor ring 663 having connection with one end of the coil.

The brake member 56 similarly to clutch member s8 is U-shaped in cross-section and has an electromagnetic coil 62 mounted in nestled relation therein, said coil being supplied current by way of electrical connection therewith.

The clutch and brake members it-i and 55 are axially spaced with respect to one another with their respective pole faces 64 and tit facing one another for engagement alternately with annular friction linings (it and 5'8 secured upon opposite faces of the plate 26. The plate 2t dependent upon which coil is energized is magnetically drawn into frictional engagement with one or the other of the clutch and brake members, such that upon engagement with clutch member 48 and wherein the clutch member is being driven from a power source, not shown, by way of belt it connected thereto, rotation is imparted to the spindle to effect a winding of the material upon the cone spool 25 mounted thereon.

Simultaneously with rotation of the spindle the belt :iii connected between pulleys 24 and "it drives cam mechanism cylinder 23 by way of gear box 33. When the coil 5:? of the clutch device 4:": is deenergized and the coil 52 of the brake is energized, the plate it is immediately released aeeacea from frictional engagement with clutch member 48 an'd by way of friction linings I8 is friction.- allyengaged: upon the pol faces of the brake member 50 thereby efiecting av quick and smooth braking of the spindle and the winding operation. The linings 68. and 10 are preferably of thelow magnetic reluctance typesuch as defined in A. Winther application Ser. No. 91,792 although any suitable lining which does not appreciably block; the flow of. magnetic lines of flux there through can" b used.

The material 12 to be wound upon the cone spool. 26 in. passing from the skein to the spool is threaded through a tension gate I4 suitably mounted upon the main frame, passed through a..lo;op' guide I6, over a guide rod18,.over a guide in the-form of a rotatable pulley 80; loopedover a rotatable guide: pulley 82. forming. part. of a material tensioning mechanism 84, through a loop guide 86 and thence through thread guide 44 onto the. cone spool.

The rotatable guide pulley 80 is mounted upon a pivotal lever arrangement 88, pulley 80 being mounted at the extremity of arm' 90 thereof whereas another arm 92 thereof engages a micro trip switch 84' forming part of electrical system 98. utilized in controlling the operation of the machine.

The electrical system 96' includes a power source 98 in the form of an A. C. current supply and a rectifier I providing D. C. power for the circuit. the switch 94 which is herein designated a. tension. limit switch, a quick acting heat actuated switch I02, a heat actuated switch with manual: reset I04, relays I08 and. I08, rheostats 0;. H2 and H4 and the clutch and brake coils 51s and. 62 respectively.

Relay I06 is a two; circuit arrangement including one set of single pole, double throw contacts II6. said contacts being designated H8, I20 and I22 and one set of single pole, single throw normally closed contacts I24 whereas relay I08 is atwo circuit arrangement including one set of single pole,. double throw contacts I26, said contacts being designated I28, I30 and. I32 andone set of. single pole single throw normally closed contacts. I34.

The'quick acting heat actuated switch I02 can be:inv theform of a bi-metal with an electrical heater which operates a snap action switch thereof and; can be pre-set for say two to. five seconds operation, depending upon the kind of material being woundandthe winding operation desired, to-begin anibbling operation ofthe machine when the 1 switch is initially closed.

Heat actuated switch with manual reset I04 like heat actuatedswitch I02 can be in the form of a bi-metal with an electrical heater which operates: a snap action switch thereof, effective upon the opening of the switch to open the main feed circuit: to the coils and 82. of the respective. clutch and brake devices and thus cease winding'operationof the machine. The electrical heater of: the: heat actuated switch I04 per se is normally pre-set between thirty and sixty secondsbefore it operates tov open the snap switch thereof;

Rheostat. I I0 is used to regulate the voltage to the-clutch coil 5] during normal operation thereof so that a very soft, smooth operation can be obtainedand no undue strain is placed upon the:

material being: wound. upon the spool. Rheostat IIZ- controls. the rate at which relay I08 will go: throughits cycle thus permitting changes there-'- of as may be deemed necessary. The: desirable:

elapsed operating time of heat actuated switch I 02 cam be: varied; by rheostat. I-I4 arranged. in

the feed. line therefor: andt a. rheostat similar thereto? may' be employed relative to heat actuated: switch I04 if it is so deemed necessary.

In a normal operation of winding machine I8 assumingpower is being delivered to clutch member 46- byway of pulley belt I0attachedtthereto and that electrical power is being supplied through the electrical system by wayof feed line I36 to the clutch coil 51, a rotation: of the spindle is obtained such that with material being supplied to the spool: mounted thereon a winding operation is commenced. With the rotation of thespool 28 the material guide 44 bearing upon the spool is shuttled. back and forth across the width of: the spool,.through the action of traverse bar 34 being: controlled in movement by way of its: engagement with the cam slotted cylinder 28 to properly place the material upon the spool in. predetermined. desired orderly manner. This winding operation continues so long as no undue tension of a. preest'ablished amount is imposed on the: material. During the normal course of the winding operation such as wherein the material" is first wound in a small diameterecl portion of the spool and progressively upon a larger diametered portion thereof: and reversely when the traverse bar-is reversed in direction of axial movement the tensioning mechanism operates by way of imposing a predetermined initial load upon the. material to reduce the size of the loop of the material withoutcausing' damage to the material or interfering with the smooth flow of material in the course of its being wound upon the spool. The rotatable guide pulley 82 forming a. part. of the tensioning mechanism inbeing.

moved to reduce the size of the loop arranged thereover operates against the resistance of tension' spring I38 and thus increases the tension imposed on the material. This tensioning' is sov controlled that when a predetermined established tension on the material is exceeded it acts through lever 88 moved about its pivot through the engagement of the material upon pulley to trip switch 94 and thus place the nibbling control of electrical. system 96: into operation. This excessive tension being imposedon the material usually occurs. as a result: of. tangles which are present in the. skein from: which the material is being unwound. and? it. is the concern here to remove these tangles if possible without causing damage to or breakage ofthe material and without completely stopping the winding operation of the machine.-

With switch 94 in. closed. position; circuit I40 is completed by way of contact points I20 and I22 of. switch lilfithrough heater element I42of switch I02, rheostat I I4 and switch I24 to ground. A circuit I44- parallel to circuit I40 is completed by way of rheostat H2 and coil I46 of relay I08 to the ground? and another parallel circuit M8 is completed by way of heater element I50 of switch I04 to ground.

By so energizingcoil I48; switch I28 is'initially tripped by the clapper, of the relay I08, not shown, thus breaking circuit I36 to the clutch device by moving contact I30v out of engagement. with contact I28 thus causing deenergization of the coil 51 thereof and simultaneously closing the circuit to the brake device by moving contact I30 into engagement with contact I32 to thus energize the coil 62 of the. brake-device and eiTect amovement of plate 20v into engagement. with brake member 50' for a braking; of the spindle- 7,. thereby. As the clapper of relay I08 is moved further in its operative path, switch I34 is moved to break circuit I52 in which it is arranged.

Simultaneously with the energization of coil hi6 and operation of switches I26 and I34 associated therewith, the heater element in accordance with its pro-established setting of say two to five seconds closes circuit I54 after said time by way of contacts I55 and I58 becoming engaged which acts through coil Ifiil to its ground to energize same, whereupon coil Ibil acts to trip switches I I6 and I24 of its relay.

As switch I It is tripped contact I20 thereof engages contact I is to complete the circuit common thereto maintaining the coil I60 energized whereas the breaking of engagement between contacts iii? and I22 disrupts the circuit to heater element I42 and circuit I45 to coil I46 of relay 38. Contacts 562 and ltd of switch I24 are moved apart by the action of coil ItIl thereby further assuring the disruption of operation of the heater element.

Upon coil Hit of relay I08 being de-energized, the switches I26 and ltd are consecutively tripped reversely to their operation when coil I46 was energized such that the contacts I28 and I 30 of switch I23 are engaged effective to close circuit I36 to once again energize the coil 51' of the clutch device to provide for the operation thereof while simultaneously the contacts I3il and I32 of switch I23 are moved apart to open circuit I52 to coil 52 of the brake device thereby releasing the braking action upon the spindle. With switch its moved by action of coil I46 to close the circuit in which it is in series with current is supplied therethrough to the coil I46 of relay I08 for the energization thereof to once again trip switches Izii and I34 associated therewith and cause a flow of current to the brake coil 62 and open the circuit to coil 57 of the clutch device thereby effecting a braking action upon the spindle as the clutch is released. This cycling on and of? action of the coil I46 of relay Hi8 by virtue of switch I2t being tripped in one direction to simultaneously close the circuit to the coil El and open the circuit to the coil 62 and in the other direction to open the circuit to the coil and close the circuit to the coil 62 affords an alternate on and off clutching and braking action upon the spindle such that a nibbling action is effected in the attempt to remove the tangles or whatever other interference has operated to tension the material being wound an amount sufiicient to trip tension switch 94. The nibbling or on and oh clutching and braking action upon the spindle will either continue for a time until said interference is removed permitting of the release of load upon tension switch 94 so that circuit therethrough is broken and a positive clutching action is had through feed line I35 to the clutch coil 5! by way of contacts I28 and I39 of switch I26. At the time of switch 94 being tripped to open position the nibbling circuits of the electrical system are cut off from the currrnet source and assume their positions of rest as disclosed by Fig. 5.

Should the off and on cycling action of the relay I08 continue up to the preestablished setting time or" heater element I50 of switch I04 the contacts I66 and IE8 of the switch will be moved apart to thus totally disrupt the electrical system and cause a complete cessation of winding operation. With this result the tangles or whatever other interference of effecting a smooth winding operation which can not be accounted for by the nibbling operation will have to be manually or otherwise removed before switch Hid can be manually reset to once again place the machine in operation.

It will be noted in the above recitation of the completion of the circuit to the heating element N2 of switch I82 that during this stage of operation the brake will be maintained engaged the preestablished setting time of the heater element Hi2 before the nibbling operation is set into action upon the contacts I56 and I58 of switch I02 coming into engagement to energize coil Isl] of relay Hit which in turn brings about the cycling action of relay I08. By so holding the brake engaged before the nibbling action is placed in motion a smooth nibbling action is assured without causing damage to the material as might otherwise occur if the interference encountered would suddenly be released and immediately another interference would be encountered. Once the contacts IBG and I58 have been engaged through the action of heating element I52 effective to close the circuit to the coil Itli of relay Iiit they serve no further purpose especially since upon the circuit to the heating element being open when the energized coil Hill operates to move the contacts I20 and I22 apart to their normal open position and will not assume a further function until an entirely new nibbling operation is to be started at a subsequent time in the winding operation.

Coil I83 in being energized operating to move contacts I52 and ied'apart positively assures a breaking of any and all circuits through the heating element I62 to the ground so that once the heating element M2 has been supplied current for its closing of switch I92 no more current can be supplied thereto until a new nibbling operation obtained in the operation of the winding machine of Fig. l incorporating the controls of Fig. 5. Curve A represents a normal operating condition of the machine wherein the peaks and dwells of the curve define the variations in tension acting upon the material being wound, said variations for this particular test being in the neighborhood of 25 grams with tension peaks of about 30 grams, an amount permissibly established at which the winding operation can continue without need for retardation of any degree being imposed for the damage free winding of the material.

Curve B on the other hand represents a condition wherein the nibbling operation comes into eifect whereby a continuing tension in the amount of about 40 grams being imposed upon the material, acting through switch St to trip same the electrical circuits are set into operation for the cycling action of the clutch and brake devices into operation. The condition will pr vail as noted for such time as the interference remains whereupon Once it is removed the normal operation is resumed as indicated by curve A of Fig. 6. comparison of operation when the machine is functioning normally and when undue and excessive tension is imposed upon the material being wound and also that the nibbling operation is a reasonably constant condition safeguarding any damage to or breakage of the material.

Fig. 8 discloses a modified form of material tensioning mechanism I66 from that mechanism 84 disclosed in Fig. 2 which is equally adaptable to machine I0.

These curves very clearly disclose the 39 ili'he mechanism I66 basically includes a pivaotal lever I68 having oppositely disposed arms .iIFIIl :and I12, arm I IaIl, being greater in length than arm I'I2, having :a guide pulley I'M at the extremity thereof upon which, the material to :be wound on the spool of the machine passes in the course of its movement from the ten- .sion gate FM to spool 28. .Arm Il2 has a spring I15 connected to .the end thereof effective to exert a tension upon the material passing over pulley I14 of arm I'm so as to normally maintain the arm [it in engagement with a switch 1.118.

The material to be wound on the spool in addition to passing over pulley ;I'I4 passes over guide pulleys 1.8.0 and I82, arranged respective- ;ly before and after the guide pulley I14, and -a guide bar I 84 arranged near the spool.

Amovement limiting element I86 resists movement of arm I III in one direction opposing the tension of spring 116 to a position where the :armiengages switch 94.

A trip switch I88 is engageable by arm "2 upon movement of arm I70 as induced by a tension pull of the material upon pulley "I14 thereof operating to take up the material extending over pulley I14 between pulleys I80 and Switch I78 is for all purposes similar to switch .94 .for it is operated likewise in the place thereof the only difierence being that switch 94 is moved to close circuit 140 whereas switch I18 is released to close circuit I40.

Whereas switch I18 is substituted in the control system of Fig. for switch 94, the switch I88 eliminates the necessity of heater switch with manual reset I04 such that instead of providing a heater controlled switch as a means of shutting off complete operation of the winding machine switch I 8.8 operates to immediately cause engagement of the brake and thus :afford instantaneous retardation of movement of the spool. Fig. 9 schematically illustrates the circuit in which switches I18 and I88 common to mechanism switch I88 in being introduced :into the elecvtrical system of Fig. 5 replaces the heater switch IIM whereby in one position of operation itforms -a part of the circuit for the nibbling operation of the winding machine and in its position as .tripped by the arm I72 closes the circuit :directly to the coil 52 of the brake device for the operation thereof.

The lever I68 in its initial movement as caused .by more than normal tension on the material being wound, operates likewise as the lever {8B of Fig. 2 to efiecta closing of circuit Mt through switch M8 for establishing a nibbling "operation cycle of the electrical control system. If the interference to the movement of the material continues such that the material passed over pulley I14 between pulleys I86 and I82 is taken up resulting in the movement of arm HI] and consequently also arm I'I2 attached thereto to a position causing engagement of switch 188 by arm I72, the switch I88 is tripped to position to close the circuit to energize coil 62 of brake 50 for its immediate application. In so positively applying brake 50 rather than merely disrupting the electrical control system, a positive and immediate cessation of rotation of the spool is accomplished thereby insuring against any possible drifting action of the :spool which might be sufiicient to destroy the material being wound.

I66 are employed. As noted Fig. .10 disclosesa modified formof brake and clutch device IIlll from that shown by Fig. 4 "the :major diflzerence being the provision of an eddy current clutch I92 in substitution for the, clutch 46 wherebyas it may be desired the speed of the spool by "way'of shaft 14 can be operated at a desired regulated speed providing for the constant linear speed of the material as it varies in its being "wound upon the smaller and larger .diametered portions of the spool and also as the amount of material tends to increase in-overall diameter-as wound upon the spool.

The device I90, includes clutch I92 consist- .ing of a pulley driven coil supporting rotor I94 :and a drum member 4:96 fixedly secured through a hub 1:98 thereof to the :shaft 44 and a brake consisting of a coil supporting stator .200 and a braking plate 202 formed'as part-of drum .member I96 having :a brake slining 21M thereon. The stator :is resiliently axially secured to an abutment 2% and vis axially relatively movable thereto for engagement of friction surfaces thereof upon the lining 204.

The operational control of the brake and clutch .device 1:90 can :be accomplished .as applied to the winding machine of Fig. fl in-a like manner to the mechanism I8 merely by the substitution of the respective coils of the :brake and clutch thereof in the electrical control :systems of either Fig. -5 :or 1-9.

The clutch I92 is believed to be amply representative in its :disclosure as being of the conventionally used :eddy current type which .is slip controllable by rheostatic means or the like, not shown, and therefore it is not felt that the detailed structure thereof need be further defined.

:Although this .invention has been disclosed specifically as relates :to the type "of winding machine used and the constructional components thereof and employs a specific electrical system for the control thereof, they are to be recognized merely :as illustrative of the basic "ideas and (fundamentals embodied therein such that the [invention i to :be construed in the light of the claims appended hereto.

What I claim is:

1. In .a winding machine, 'a winding spindle, .a clutch, engageable with the spindle, having .a magnetic coil, a brake, engageable with the spindle, :having a magnetic coil, apower means for driving the clutch, and a current supplied electrical control system including the brake and clutch coils, rapid continuous cycling means for alternately energizing and de-energizing the brake and clutch coils, switch means controlled by :the tension of a strand of material being wound upon the spindle effective 'to be closed upon a predetermined tension of the strand of material, for placing the brake and clutch coil alternately energizing and de-energizing means in operation, and means for deenergizing the clutch coil and for simultaneously energizing the brake coil effective to inhibit rotation of the spindle after a predetermined time of operation of the alternately energizing and deenergizing meansand with the switch closed.

.2. .A winding machine according to claim 1 wherein .a heater switch is included in. the electrical control system to control the flow of current therein.

3. .A winding machine according :to claim 1 wherein a heaterswitch is included in the means for alternately energizing and de-energizing the 11 brake and clutch coils operative to delay the initial alternating cycle thereof.

4, A winding machine according to claim 1 wherein a tensioning mechanism engages the material being wound for limiting the tension imposed on the material prior to the operation of the switch means controlled by the material.

5. A winding machine according to claim 1 wherein the electrical control system includes two relays, one of which is operative to set the other relay into cycling operation.

6. A winding machine according to claim 5 wherein each relay includes two circuits, one circuit of each having one set of single pole, single throw normally closed contacts and the other circuit of each having one set of single pole, double throw contacts.

7. A winding machine according to claim 1 wherein the clutch coil has a rheostat therefor.

8. A winding machine according to claim 6 wherein each relay includes a coil operative upon the energization thereof to reverse the position of the contacts of the switches thereof.

9. A winding machine according to claim 1 wherein the clutch is a slip controllable eddy current type clutch.

10. A winding machine according to claim 1 wherein the clutch and brake are of the friction plate type.

11. A winding machine according to claim 1 wherein a tensioning mechanism, over which the material to be wound on the spindle passes, includes a movable element engageable with the switch means.

12. A winding machine according to claim 11 wherein the electrical control system includes a circuit supplying current directly to the brake coil and a second switch positionable to supply current either to the means for alternately energizing and de-energizing or to the brake coil circuit.

13. A winding machine according to claim 12 wherein the movable element of the tensioning mechanism is a two armed lever, one arm of which engages the material to be wound and the other arm of which engages the second switch means.

14. A winding machine according to claim 13 wherein the one arm engageable with the second switch means is spring tensioned in an opposite direction to the pull of the material engaging the other arm.

15. A winding machine according to claim 14 switch means is comparatively much shorter than the other arm of the lever and the longer arm is engageable with the first mentioned switch means.

16. In a winding machine, a winding spindle, a clutch, engageable with the spindle, having a magnetic coil, a brake, engageable with the spindle, having a magnetic coil, power means for driving the clutch, and a current supplied electrical control system including the brake and clutch coils, means for alternately energizing and de-energizing the brake and clutch coils, a heater switch in the means for alternately energizing and de-energizing the brake and clutch coils operative to delay the initial alternating cycle thereof, a heater switch in the electrical control system, apart from the brake and clutch coil alternating energizing and de-energizing means, operative to control the flow of current through the system, and switch means con- 12 trolled by the tension of a strand of material being wound upon the spindle for placing the brake and clutch coil alternately energizing and ole-energizing means in operation.

17. A winding machine according to claim 16 wherein the heater switches each include a pair of contacts and a heater element and wherein the heater switch included in the alternating means has a rheostat control for the heater element thereof.

18. In a winding machine, a winding spindle, a clutch, engageable with the spindle, having a magnetic coil, a brake, engageable with the spindle, having a magnetic coil, power means for driving the clutch, and a current supplied electrical control system including the brake and clutch coils, means for alternately energizing and ole-energizing the brake and clutch coils, a

circuit suppling current directly to the brake coil independent of the means for alternately energizing and de-energizing the brake and clutch coils, a heater switch included in the means for alternately energizing and de-energizing the brake and clutch coils operative to delay the initial alternating cycle thereof, switch means controlled by the tension of a strand of material being wound upon the pindle for placing the brake and clutch coil alternately energizing and de-energizing means in operation, and a switch in the control system positionable to supply current either directly to the brake coil circuit or to the alternately ener gizing and de-energizing means, said last mentioned switch being controlled by the strand of material to be wound upon the spindle.

19. In a winding machine, a winding spindle, a clutch, engageable with the spindle, having a magnetic coil, a brake, engageable with the spindle, having a magnetic coil, power means for driving the clutch, and a current supplied electrical control system including the brake and clutch coils, rapid continuous cycling means for alternately energizing and de-energizing the brake and clutch coils and switch means controlled by the tension of a strand of material being wound upon the spindle for placing the brake and clutch coil alternately energizing and de-energizing means in operation, said alternately energizing and de-energizing means in cluding relay mechanism operative upon actuation of the switch means to establish a continuous cycling operation of said energizing and deenergizing means for a predetermined tension of the strand of material for a predetermined time and to discontinue operation of the machine when said predetermined tension is continued for a period of time in excess of the predetermined timed operation of the energizing and deenergizing means.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,259,241 Cook Oct. 14, 1941 2,271,051 Treckman et al. Jan. 27, 1942 2,317,290 McIlvried Apr. 20, 1943 2,355,634 Doughty, Jr Aug. 15, 1944 2,603,428 Newcombe July 15, 1952 FOREIGN PATENTS Number Country Date 189,905 Great Britain Dec. 14, 1922 570,408 Great Britain July 5, 1945