US1458194A - Starting and stopping mechanism for winding machines - Google Patents

Description

E. F. PARKS ET Al.

STARTING AND STOPPING MECHANISM FOR WINDING MACHINES June l2, 1923.

Filed March 13 1919 5 Sheets-Sheet 2 dr mbv, m wr w, w E O we w 10 f JIIHII BASS 941 Jun@ 12, w23.

E. F. PARKS ET AL STARTING AND STOPPINC- MECHANISM FOR WINDING MACHINES Filed Maren .15 5 sheets-sheet June i12, w23. www@ E. F. PARKS ET AL STARTING AND STOPPING MEHANISM FOR WINDING MACHINES Filed March 13 1919 5 Sheets-Sheet 4 INVENToQs jme l2, 11923.' www@ E. F. PARKS ET AL STARTING AND STOPPING MECHANISM FOR WINDING MACHINES Filed March 13 1919 5 Sheets-Sheet 5 Inn/Emo s.

BT f AQ'TORNEYs Patented .lune l2, i923.

"uf-isn str EDWARD F. DAB/KS AND CARL A. BRINK, OF PROVIDENCE,

EAST YROVIDENCE, RHODE ISLAND, ASSIGNORS,

AND GEORGE 'N'.` TAYLOR, OE BY MESNE ASSIGNMENTS, TO THE NEW ENGLAND TRUST COMPANY, A CORPORATION OF MASSACHUSETTS, TRUSTEE.

STARTING AND STOPPING MECHANISIVI FOR WINDING- MACHINES.

Application filed March 13, 1919. Serial No. 282,349.

To aZZ whom t may cof/wem:

Be it known that we, EDWARD F. PARKS and CARL A. BRINK, of Providence, and GEORGE N. TAYLOR, of East Providence, respectively, in the county of Providence and State of Rhode I sland, citizens of the United Sta-tes, have invented certain new and useful Improvements in Starting and Stopping Mechanism rfor Winding Machines, of which the following is a specification.

Our. invention relates to improvements in means for controlling the operation of winding machines or other apparatus and particularly to automatic stopping-mechanism for arresting the operation of the machine in cases of emergency. Om` improvements are herein shown as applied to a machine for winding electrical-coils in which the winding spindle or mandrel is continuously rotated, and the wire-guide, which deposits theturns of the winding in place on the mandrel, is given an intermittent feed or traverse with a reversal inthe direction of feed at opposite ends of the coil. Such a type of machine is described and illustrated in our previous application, Serial No. 279,- 255, filed Feb. 26, 1919, but it is to be understood that the present improvements are applicable to various types of apparatus employed for other purposes, and the invention is not therefore limited in this respect to the embodiment as herein shown.

The principal object of our improvement is, in general, to provide a stopping-mechanism for arresting` the .operation of the apparatus in case of abnormal conditions tend- -ing to resist the proper functioning of the mechanism; and in particular, as applied to a winding machine, to stop the machine whenever the wire-guide encounters undue resistance to its feed so that the operatingparts of the feeding-mechanism shall not be strained, broken or disrupted in their organization.

The manner and means for carrying out the improvement are fully described in the following specification, illustrated by the accompanying drawings, in which like reference characters designate like parts. In the drawings Fig.' 1 is a front elevation of the winding machine, giving a general view of its several traverseor feed-shaft driving-connections showing the improved, automatic 'stop-control in relation thereto;

Fig. 5, a sectional view in detail of the stop-control clutch-device, taken on the line n-X of Fig. 6;

Fig. 6, a part sectional view of the same taken on the line Z-Z o f Fig. 5;

Fig. 7, a part sectional view of the same taken on the line Q-Q of Fig. 5;

lFig; 8, an enlarged, detail view of the stopping-device control-lever mechanism;

Fig. 9, a plan view of the brake-device for the driving-means; and

Fig. 10, a side elevation of the ,Same in detail. l f f Referring first to Fig. 1, the winding machine herein illustratedcomprises, Vin gen.- eral, a .horizontal frame or bed B mounted on .suitable legs or standards, one of whichv B is partly shown at the left and more completely illustrated in end elevation in Fig. 3. Surmounting the bed B at .its left-hand end is a fixed headstock C provided with bearings c, c for the rotating winding-spindle S. At the right-hand end of the bed B is an adjustable tailstock D carrying a ,sleeve F slidable in a split-bearing CZ which may be clamped therearound by a hand-screw II extending through the split portion of the bearing. Journaled in the sleeve F is a live-spindle Sformed with a pointed -end adapted to support the outer extremity of the winding-mandrel A, the opposite end of which is secured to the winding-spindle S by means of a suitable .chuck G. The

above described arrangement is similar tov that employed on lathes and other machinetools and `provides for removal and replacement of the mandrel orarbor A, `as occasion requires, `by sliding the sleeve F outwardly in its bearing ci. The mandrel A carries a detachable former or core K on `which the wire is wound to producey the coil,l and at its ends are removable heads or flanges 7c, la

.which-serve to holdv the windings in place.

.A-Arranged opposite the winding-mandrel is the wire-guide T whichy is mounted on a carriage L slidable on ways or tracks b, b

supported on Ithe front of thev .bed.B. The.,

wire-guide T comprises a slide t carryinga grooved guiding-pulley n over -which the wire fw leads to the core K. The slide t is y lmovable in a slot on the top 0f the carriage L to adapt the guiding-Wheel n to recede 'from the axis of they winding-mandrel Aas the layers of Awinding are built up on the 'core At the bottom of the carriage L is af'guide-wheel Z over which `the wire fw leads from` its source of supply, not herein shown,

and thence it passes up over a second guidewheel m on the slide t to the main guiding wheel n. *p

The Wire-guide T is fed along the winding-arbor A by means of a screweshaft O which` engages a nut or follower l?- -on theV backof the carriage L. `The feed-shaft O isjournaled in bearings 2,'2 at the endsv of y the tracks '6,- Y) and extends to the` left y ings 3,4! 1n the gear-box through the side of agearcasing or housing U mounted onvthe frontl of the bed B.l

The `shaft-O is' connectedytobe rotated Vfrom an alining stud-shaft O" iournaled inbearand driven from a ratchet-'mechanism as Vlater explained.

The feed-shaft O may' beconnected directly with its drive-shaft' O by means of 'aL clutch device shown at R, or in some cases, where a variation in speed is required between the.

shaftsyla vtrain of change-gears is provided `for this purpose. As shown ink Fig. 1,*a

countershaft I is journaled in-bearings .5 and 6 in the casin U and arranged below and parallel with t eshaft O. At the end yofthe shaft O is a gear 7, mounted on one ofthefcoacting members of the clutch R, in `the manner as'later described, andarrangedto mesh'with agear 8 fast on the countershaft I. The shaft I also carries a pair of change-gears 9 and 10 connected by a hubI 11 and keyed to the shaft while slidable therealong. 'The gears 9 and-10 are adapted tobe engaged with gears 12 and v13, respectively, on the shaft O and through this arrangement after the clutch lit4 'has been uncoupled the shaft O may bevdriven from the shaft O `through the intermediary of the countershaft .T at a different rate of speed as determined by the 4ratio in the gearing. y A

At the left-hand end of the shaft O is a lratchet-wheel y15, keyed fasty thereon and 'adapted-to: be rotated from two oscillating 'arms '16 and 17 carrying pawls 18 `andl 19, see Fig. 2, which engage the teeth of the ratchet. The'pawl-arms 16 and-.17 are pvoted on the shaft O and are oscillated from a. reciprocating slide 2O `which is slidable on a'horizontal" track 21. The slide 2O is con'- nected to the pawl-arms 16 and 17 by rods 22 and 23 and the pawls. 18 and 19 are under the control of reversing-means whch's operated automatically to render onel pavvl active while the otheris maintained inactive.

Through this arrangementthe pawl 18 on the arm 16 operates to turn the ratchet 15 tothe left, as viewed in Fig. 2, while the pawl 19 when active turns the ratchet clockwise, or to the right. Tnl this manner the shaft O is rotated to turni the feed-shaft O in one `direction. to feed the carriage L to the right, and in the opposite vdirection to return it to the left, with the reversal of i direction )of feed controlled by the position of the guide T in accordance with the extent of full traverse required. The means `for reversing the action of the pawls 17 and .-18,

and thereby the direction of feed of the wire guide T, is described and illustrated indetail in our pending application above "referred to, Vbut since, it i`s not essential to the'present improvement, it is not `herein shown. f' l l' -y The slide`20 for oscillating the pawl-arms 16 and 17 is` reciprocated on its track 21 under the action of a' rockab-le lever 25. The lever25 is slidable in a bearing 26 pivote'd on a bracket 27 whichvis adjustable l* vvertically on a standard 28v to varyrthe throw` of the lever. At its lower end the lever 25 is pivotally'connected to the slide20 byl a stud 29, while atits upper end it carries a roller 30 .engaging a groove 31 in the face of a cam V. The cam V is 'fast on the-end of the winding-spindle S andas` the' latter rotates in the direction indicated bythe arrow m, Fig. 2, during the operation ofthe machine the lever 25 is rocked back andl f forth toreciprocate the slide 2O which,"in

turn, `oscillates the pawl-arms 16 and 17-toturn the ratchet 15. The groovelin the cam V is so formed as to rock the lever 25 to -reciprocate the slide 2O with 'arelativelyv slow'y movement tothe right-,and a quicker movementv as it returns to the left. manner .the pawl.arms 16 and. 17 are moved back'through their inoperative*strokeI at a Tnl this slow rate, but as theyv areswung to the left v message the side of and in parallel, contiguous relation with the previously laid convolution. The complete arrangement of the means for controlling this intermittent feed of the wire-guide T is fully described in our previous application before referred to and need not be further enlarged upon herein.

'Suffice it to state that while the present improvements have been shown as applied to a traverse-mechanism of this type they are also adapted for apparatus of a different arrangement or method of operation and might be used on other styles of machines employed for entirely different work.

Referring to Figs. 1, 2 and 3, the drivingconnections for the machine are arranged at its left-hand end and enclosed within the walls of the headstock C and the sides of the leg or 'standard B. As shown more particularly in Fig. 3, a bracket 33, bolted to the inner side of the front wall of the leg B at 34, 34, is formed with arms 35, terminating in spaced- apart hubs 36, 36, see also Fig. 1. The hubs 36 are bored to receive bushings 37 which project beyond their outer ends to adapt them to enter the bores of two spaced-apart hubs 38, 38 serving vas a pivotal support for a swinging bracket 40. The bracket 40 is formed with two arms 41, 41 depending from the hubs 38, 38 and joined togetherl by a lower, elongated hub 42. Journaled in the hub 42 is a shaft 43 which carries a flanged belt-pulley 44 fast on one end. The opposite end of the shaft 43 is reduced in diameter at 45 where it enters the bore of a pinion 47 which is held in place thereon by a nut 48. The pinion 47 meshes with a gear 49 which is held fast on the shouldered end of -a shaft 50 by means of a nut 51. The shaft 50 eX- tendsthrough the bore of the bushings 37 in the spaced hubs 36 of the fixed bracket 33, and is free to rotate therein when driven from the shaft 43 through the gears 47, 49. Secured fast on the shaft 50 centrally thereof is a sprocket-wheel 52 arranged between the hubs 36, 36 of the bracket 33 whereby to hold the shaft in place in its bearings. The sprocket-wheel` 52 is connected by a drive-chain 53 with a sprocket 54 keyed to the winding-spindle S and en- I closed within the headstock C, as shown in Fig. 1. Through these connections the spindle S is driven from the belt-pulley 44 through the gearing 47, 49 at a reduced rate of speed. The pulley 44 is connected with the source of power, which may be av motor, line-shaft or any other prime-mover, by means of a belt 55 which passes through the rearward side of the standard B as shown in Fig. 3. Normally, when the machine is at rest, the belt 55 runs slack over the pulley 44, as here illustrated, and the pulley is held from turning by a friction-brake 56 'which bears `against its periphery on its rearward (FDD am side. rihe brake 56 comprises a main brakeshoe 57 mounted on a rod 58 which'extends between two brackets 59, 59 fastened-to the rear wall of the standard B by bolts 60, see Fig. 9. The brake-shoe 57 carries a curved, spring-'metal plate 61 which is faced with a lining 62 constructed of leather or other friction-producing material which forms the contact-element for the pulley 44. As shown particularly in Fig. 10, the plate or auxiliary brake-shoe 61 is bent on a radius slightly less than that of the rim of the pulley 44 so that as'the latter moves into contact with it the outer extremities of the shoe 61 will engage the pulley first. As the pulley 44 is carried firmly against the shoe 61, however, the ends of the latter will eX- pand so that finally its entire braking-surface makes frictional contact with the periphery of the pulley as illustrated in Fig. 3. The purpose of this arrangement is to provide for 'regulating the braking4 action so that the rotation of the pulley 44 will be stopped with a gradual retardation and started with a corresponding acceleration in its speed. In other words, the yielding spring brake-shoe 61 acts as a cushioningdevice or shock-absorber for overcoming momentum and inertia and preventing sudden strains being imposed on the moving parts.

The pulley 44 is moved into and out from contact with its brake 56 by theswinging action of its supporting-bracket 40 under the rcontrol of a tension-spring 63. As shown in Fig. 3 the vspring. 63 is anchored at 64 to the rear wall of ythe standard B with its opposite end connected to an elbowshaped arm 65 on the bracket 40. The arm 65 forms a continuation of one of the arms 4l of the bracket 40 and reaches downwardly with a flat plate 66 at its end. The l plate 66 makes contact with the end of a stud 67 screwed through the upper end of an upright lever 68, the head of the stud 67 being adapted to engage the rear wall of the standard B to limit the throw of the lever. The lever 68 is mounted fast on a rod or shaft 69 journaled in bearings 70 on the opposite sides of the base of the standard B. Extending forwardly from the rod 69 is a lever 72, mounted fast thereon and formed at its outer end with a treadle 73 arranged in convenient position to receive the operators foot as he stands at the front of the machine.

Pivotally connected to the outer end of the treadle-lever 72 at 74 is a flat rod or bar 75 which reaches up through the machine-bed B and projects above the top of the base of the headstock C. The rod 75 is guided at its upper end in a plate-like bearing 76 secured to the headstock C at 77 ,-77 see Figs.

4 and' 8. The rod 75 serves as a control element for holdingfthe treadle-lever 72 de- .shaft 79= is. a lever 85secured thereto by a setscrew 86, and formed' with la depending arm 87 which is pivotally connected with the end of a horizontal, sliding bar 88 byl means of `a stud 89. The opposite end ofthe bar 88 slides ina cleat or bearing 90 fastened to' the base of the headstoclr@ at 91, as sho-wn in Fig. 4.y Between thelhub 'ef the lever 85 and the'bearing78vis a`handlever 92-ar ranged ,free to turn on the shaft 79, see Fig. 8. Referring particularly to Fig. 4,`the lever 92 is formed withja'n arm 98 reaching 'out above the slide-bar 88 and'terminating ina squared' toe 194 adapted `to engage` with a v notch95 in the top of bar. Extending upwardlyJfromthe hub of the lever 85 is an arm 96 carrying a cross-,pin 97 which projects across the handle of the lever 92 as shown inFig. 8. A springf98 is connected to the right-hand end of the sliding bar 88 by means of the stud 89 and anchored to a pin 99 driven into the headstock C. Normally theV spring 98 tends to move the bar 88 to the right to rock the shaft'7 9 throughthe lever 85 to carry theftoeofthefdetentdever 80 into engagementwith its stop-plate 88 on the verl tical rod 75. When, however, the bar 88 is slid to the left, against kthe action-of the springf98, its notch 95 will be carried into position to be engaged by the toe 94 on the and-lever 92, this engagement being eifect ed by the tilting` of the lever 92 through the action of gravity. With the bar 88 locked against the action of its spring 98, in the manneras above described, the shaft 79 will be held in position to maintainfthe detenty lever 80away from the stop 88 on the verti-v cal rod so thatfthe'latter is free to slide up and down undery the action ofthe treadlelever,72.f rlhe shaft `79 may be rocked manually to free the detent-lever from the bar 75 by. throwing the yhanddever 92 to the right, as viewed in Fig. 4, this action carrying it against the pin 97 inthe arm 96 of the lever to rock the latter which is fast on I the shaft. The slide-bar 88 is moved to the left to release the detentnieans to arrest the operation of the machine through an automatic control as n'eXt described.

y l `Fastened to the side of the bar 88l is a depending arm 100 which is pivotally connected at 101 to the upper arm of a rocklever v102. The lever 102 is pivoted on a stud 103screwedinto the side vof the gearcasing U and is formed with a lowerwarml 104 extending downwardly adjacent the side of the shaftgO., The. levery i 102 `i's-rocked to slidethe -stop-'control bar 88; through theI actionof the clutch-,device R which is auto`` matically uncoupled `when `the rotation of the shaft, 0 ,is resisted under abnormal stress or strain. i Referring now to 4, 5 and 6, the lclutch-mechanism Rcomprises a hubw105 held fast on theend of the ratchetshaft Oby means of a tapered pin 106. At

the right of the hub 105 is the gear(l which 'is free on the shaft 0. and provided with a hub 107 formedwith akey or `spline 108 adapted toengage a slot 109 in' the end of a female clutch-member ,110. member 110 is held fasty on the end ofthe feed-shaft 0 by a set-screw 111, see Fig. 4, f

and when it isv desired to drive the shaft() from the shaft G through the trainofgears 7, 8, 9, 12 `or 10,18, (Fig. 1), asjpreviously explained, the screw 111is released and the member 110 slid to the, right.. Overhanging the leftfhand side of the'gear 7 is a'ring 112 formed integral therewith and fitted to turn freely on the periphery of thev hub 105, see Fig. 6. Referring also to Fig. 15,'the gear 7 is normally maintained rotatively connected 'with the hub 105by a pair of plunger-pins 115 which are slidable in radial bores in the overhanging yring 112. ,The innervends of the pins 115 are beveled on opposite sides to form Vshaped points `116 which seat in correspondingly shapedv recesses 117 on the periphery ofthe hub `105. Preferably, the

recesses 117. are :formed in. thek ends fof l hardened plugs 118 set in radial bores inthe vhub with their outer-extremities flush `with'the periphery thereof. 'llheplnngerpins are held in engagement with the recesses 117 in the plugs 118 by means ofA a wire spring-ring 120 coiled around the cir l cuinference of the ring 112I`andpassing through slots 121 in the ends of the pins.

v#The springring 120 is seated in asp-ir'al groove 122 onthe ring 112 ,withy one of its ends 123 bentradially inward and held in a bore 124vas illustrated inFigs. 5 and 6.k As shownin Fig. 6, the body of the gear 7 is provided with a plurality vof transverse bores 125 yto which areiitted transverse pinsf126 whichy are .free to, slideV therein.v The inner of the gearfvandare formed with opposite, beveled faces 127 similar to the bevels on the radial pins 115but of slightly less'inclination.` Formed in the vertical face of the hub 105 arelbeveled recesses 128 with which the beveled'ends 127 of the pins 126-engage.HV At their outer ends the pins 126 are reduedin diameter at 129 and rivetedfthrough a" plate or disk-washer 180. The washer or disk 130 is iitted to slide on the hub v107 of the gear` 7 and normally is received within an undercut recess 181 on the side ofthegear.. As shown f ends of the pins'126 project through'theside in. Fig. 4, the outer face of the disk 130 bears against the rounded end of the lower arm 104 of the lever 102. Referring to Fig.v7, the gear 7 is formed with a transverse bore 132 which provides a pocket for a coiled spring 133. One end of the spring 133 is anchored at 134 to the side of the hub 105 while its opposite end 135 is riveted through the plate 130, tending to maintain the latter within its recess 131.

lt will be seen from the foregoing description that the gear 7 forms the connection between the drive-shaft O and driven shaft O, both when the gear is active to drive the train of gearing on the countershaft I, or when it is employed solely as a clutch-member to couple the shafts together by means of its hub 107 and the opposite clutch-element 110. It is also to be observed that the gear 7 is connected rotatively with the drive-shaft 0 through the hub 105 inductively. That is to say, the gear 7 may be turned rotatively of the hub 105 against the resistance of the plunger-pins 115 bearing against the beveled recesses 117 in the hub. Should the rotation of the driven shaft 0 be resisted under abnormal stress then the tendency will be for the hub 105 to` turn within the gear 7 and this action will cause the pins 115 to ride up the sides of their beveled sockets while expanding the springring 120. Meanwhile, this relative rotation between the hub 105 and gear 7 will also cause the transverse pins 126 in the gear 7 to be slid to the right, as viewed in Figs. 4 and. 6, under the action of the inclined pockets 128 on their beveled ends 127. In this way the disk 130 is slid to the right to rock the lever 102 to slide the bar 88 to the left, whereby to release the detent-means and arrest the operation of the drivingmechanism. The method of operation of the complete apparatus is as follows:

Referring first to Fig. 3, when the treadlelever 72 is in its raised position, as here shown, the bracket 40 will be swung back to press the driving-pulley 44 against its brake 56, and the belt 55 will run slack over the pulley without turning it. When it is desired to start the machine the operator places his foot on the treadle 73 to depress the lever 72 and this action rocks the arm 68 on the shaft 69 to the right, causing it to act through the arm 65 on the bracket 40 to swing the latter in the same direction against the tension of its spring 63. The ulley 44 will thus be carried away from the rake 56 which releases it gradually while the ends of the brake-shoe 61 contract inwardly as shown in Fig. 10. As the pulley 44 moves to the right it takes up the slack in the belt 55which, as it tightens on the periphery of the pulley, starts its rotation with a gradually accelerated speeduntil the full driving speed iS attained. As before explained, the pulley 44 is fast on the shaft 43 and the rotation of the latteris transmitted through the gears 47 and 49 to the shaft 50. The shaft 50 turns the sprocket 52* and through its chain 53 transmits rotation to the upper sprocket 54 which drives the winding-spindle S. As shown in Fig. 1,'the spindle S is connected to rotate the mandrel A to wind the wire fw onto the former or core K as it is fed thereto by the traverse-guide T. Referring now to Fig. 2, it has before been explained that the spindle S drives the shaft O through the operation of the cam V acting on the lever 25v to turn the ratchetwheel 15. The rotation of the shaft O is transmitted either directly through the clutch R, or through the train ofgears on the countershaft l, as may be selected, to turn the screw-shaft 0. The rotation of the shaft` O' under the impulseof the ratchetdrive is intermittent and as the windingmandrel completes each turn in its rotation the screw O acts through the nut or follower P, see Fig. 1, to advance the wire-guide T along the core K to an extent equal to the thickness of the wire being wound. As the ide Tv moves from one end of the former l to the other it deposits the wire onto the coil in a series of parallel, adjacent turns or convolutionsl which form a layer extending between the guiding-flanges or heads 7c, la. As each layer of the coil iscompleted the direction of feed of. the guide is reversed through the automatic operation of instrumentalities not herein shown or described, but which are fully explained in our previous application before referred to.

Under normal conditions the machine operates continuously to feed the wire fw into place on the former K while traversing it back and forth to build up the coil in superimposedlayers of parallel turns for con-` volutions. At the start ofthe winding, or sometimes in nishingthe coil, it is desirable to maintain the machine under full control of the operator in order that its operation may be immediately arrested should the apparatus be incorrectlyadjusted or fail to function properly. To provide for this the detent-devices which render the drivingmechanism active for continuous operation are not engaged automatically, but must be set by hand to hold the starting-treadle 72 depressed. When the machine is atv rest the slide-bar 88, see Fig. 4, is held against the action of its spring 98 by the engagement of the toe 94 on the lever 92 with the notch 95. With the parts thus engaged the rock-shaft 79 will be maintained by the arm 87 on the lever 85 in position to hold the detent-'lever 80 free from the stop-plateV 83l on the vertical rod 75, see Figs. 4 and 8. With the detentlever 80 thus restrained from action the rod 75 isA free to slide up and down vunder the mol/@mem 0f the treadle-lever 72. l-lence,`

when the foot isfirst pressed down on the treadle 7 3 to start the machine, if any con dition requires linstant stopping of the windling the operator has only to release the treadle to allow the bracket to swing back to the left, as viewedfin Fig'. f3, toV arrest the rotation of the pulley 44 which is cari riedthereby. VThrou hthis arrangement the machine is maintaine under manual control so that the operator may observe its operation and makesure of the proper function-l ing of the windingelements before setting it to' operate continuously. New, as the treadle-lever is'held depressed, if the operator is satisfied that lthe yproper adjustment of the feed of the guide has been made, to render the operation `of the machine continuous it is only necessary to throw the handlever 92, see Fig. 4, to theright. This action lifts its toe 94 out from the notch 95 in the bar88 and the latter will therefore be slid to the right under the tension of its spring 98. As the bar 88 moves to the right it acts through the lever v85 to rock the shaft 79to carry the toe 82 ofthe detent-'lever 80 in'to engagement withl the edge of the stop-plate 83 on the rodg75, as shown' in Fig. 4. The-rod 75 will thus be locked in x positionjto `hold the treadle-lever 72 depressed and consequently the driving-mechvanism will be'maintained active to continue the operation `ofthemachine without further attention on'the-part of the operator. y When Y it is desired to stop the machine the lever 92 is rocked to the right again until its handle, coming against the pin 97 in the arm 96 of the lever 85,-turns thelever 85 to rock the shaft 7 9 to release the detent-lever 80. When the toe 82 of the lever 80 is removedfrom the edge of the stopplate 83 the rod 7 5 will be allowed to slide upwardly as the treadlelever 72 rises under the impulsey of the bracket 40 'as moved by its spring 63, see Fig. 8. As the rod 75 slides upwardly in its bearlng 76 the plate 8 3 rides under the toe y82 of the detent-lever 80"and`holds the latter so that the lever 92can now be released to allow its toe 94-to drop into engagement with the notch 95 in the slide-bar 88. This action locks the bar 88 against the action of its spring 98 and with the partsv in this rela'-I tion the machine is now readyto be started aga1n 1n the manner as first explained.`

Theoperation of 'the machine is arrested automatically as a precaution against accident to its parts through the functioning of o the yielding clutch-device R on the shaft O.

It 'has before been explained that the gear 7 ,1 see Figs. 4, 5 and 6,is connected rotativelv with theshaft O" through the engagement oftheplunger-pins 115 with the recesses 117 in the hub 105. When, therefore, the turnlng. of the gear is resisted to an vabnor .r mal degree the hub will have a tendency to free itself frorn'the gear by forcing the pins 115 radially outward from their` beveled seats 117. This abnormalresistance to the drive may be occasioned by obstruction to the feed of the ywire-guide T or from other causes. For instance, a turn of wire w might become misplaced on the coil "in such manner that it would reject above the' surface on which the winding is beingA performed. In such case the guide-wheel a would be hindered in its feeding-movement as its edge came incontact with'the misplaced wire and there would be dangerof straining or rupturing the guide T or the parts vof its feeding-means, particularly the delicate ratchet-mechanism for the shaft O. In other instances, should the feeding-mecha nism of the machine not be aroperly ad 'justed to rovide an extent kof1 the guide in conformity with'the distance between the end-flanges'k, 7c on the 'core K, one of the flanges 'might interfere 'with the feedof the guide. That is to say, if the machine were improperly adjusted whereby the guide T had too long a traverse its Vfeed would carry'it against one 'of the flanges 7a with such force as to bend or break the traverse of y l guideawheel a or otherwise damage the operatingl parts. It is therefore to guard against `such accidents that our improved emergency sto ping-device is provided to function as fo lows: If the guide Tisy restricted in its feeding movement then there will be a tendency towithhold its yfeed-shaft O from turning. The shaft O being driven from the shaft O', either through the clutch! connection vat 108f109 orthro'ugh the coun-v tershaft I, as previously explained, resistance to its rotation will cause the gear 7 to be released from its hub 105. kAs the hub turns withinthe gear 7, while forcing the pins out of their seats A117, thebeveledy seats 128'on the side of the hub will act to slide the transverse pins 126 through their bores in the gear. That is 'to say, the pins 126 will be moved to the right, as viewed in Fig. 6, and consequently the disk 130 willl be slid outwardly on the hub 107 of the gear 7. As before stated thel disk 130 rv'bears against the lower end of the arm 104 of the lever 102, see Fig; 4, and therefore the leverv vwill be rocked to cause its upper arm to slide the bar 88 to the left.` This movementof thebar 88 acts throughv the levery 85 on rthe shaft 7 9 tofrock the latter to release the detentlever 80 from'the rod 7 5. .The release of the detent-device allows the rod y75 to slide upwardly to effect the operation ofthe stopping-mechanism of the machine in thel ico rio

gear 7 vfrom its lhub 105 before the automatic stop-device for the drive functions.` The purpose of this is to allow the wire-guide T to be held for an instant without arresting the operation of the whole machine. That is to say, if the guide meets with a slight resistance to its movement which is quickly overcome, for instance, if the guide-wheel n should strike against a misplaced turn of the wire in the coil and then ride up over it, the c connections between the gear 7 and its hub .105 will yield sufficiently to allow for this slight halt in the feed. If the resistance to the feed is not immediately overcome, however, then the continued turning of the hub,

105 with respect to the gear 7 will act to slide the disk 130 to effect the disengagement of the detent-devices as before explained.

It will be observed that our improvement provides an extremely simple and efficient stopping-mechanism which may be maintained under the control of the operator' orv might be applied to other types of winding machines than that herein shown.

Therefore, without limiting ourselves to the exact embodiment of the invention herein shown and described, what we claim is 1. In a winding machine, the combination with la rotating winding-mandrel and a traverse-guide, of means to feed the guide longitudinally of the mandrel, and means to disconnect the guide from its feedingmeans when the guide meets an obstruction which causes abnormal resistance to its feeding movement.

2. In a winding machine, the combination with a rotating winding-mandrel, of a guide movable longitudinally of the mandrel, means to feed the guide along the mandrel, and means operative vto arrest the operation of the feeding-means when the guide meets an obstruction which causes undue resistance to its feeding movement.

3. In a winding machine, the combination with a rotating winding-mandrel, of a guide movable longitudinally of the mandrel, means for traversing the guide with respect to the mandrel, and automatically-operated means for arresting the operation of the traversing-means when the guide meets an obstruction which causes undue resistance to its movement.

4. In a winding machine, the combination with a rotating winding-mandrel, of a traverse-guide for layingthe turns of winding in place on the mandrel, means for traversing the guide opposite the mandrel, and stopping-means for arresting the operation of the'machine when the guide meets an obstruction which causes undue resistance to its movement in its traverse along the mandrel.

5. In a winding machine, the comb-ination withA a rotating winding-mandrel, of a traverse-guide movable in a path oppositethe mandrel, means for traversing the guide with respect to the mandrel, means for driving the traversing-means, and means for disconnecting the driving-means `from the traversing-means when the guide meets an obstruction which causes undue resistance to its movement.

6. 'In a winding machine, the combination with a rotating winding-mandrel, of a traverse-guide, means for traversing the guide with respect to themandrel, driving means for operatingv the traversing-means, and means connecting the driving-means with the traversing-means to permit lost-motion therebetween when the guide encounters an obstruction which causes undue resistance to its movement.

7. In a winding machine, the combination with a rotating winding-mandrehof a traverse-guide, means for traversing the guide opposite the mandrel, driving-means for o-perating the traversing-means, and a yielding clutch connecting the driving-means with the traversing-means to permit lostmotion therebetween when the guide encounters an obstruction which causes undue resistance to its movement.

8. In a winding machine, the combination with a rotating winding-mandrel, of a traverse-guide, means for traversing the guide with respect to the' mandrel, driving-means for operating the traversing-means, stopping-means for arresting the operation of the driving-means, and means operative when the guide encounters an obstruction which causes undue resistance to its movement to cause action of the stopping-means.

9. In a winding machine, the combination with a rotating winding-mandrel, of a traverse-guide, means for traversing the guide longitudinally of the mandrel, means for driving the traversing-means, means for permitting lost-motion between the drivingmeans and the traversing-means when the guide encounters undue resistance to its movement, and means for arresting the operation of the driving-means when the resistance to the movement of the guide is continued.

10. In a winding machine, the combination with a rotating winding-mandrel, of a traverse-guide, means for traversing the f y 1l. Ina winding machine, the combinaf guidefwithfrespect tothe mandrel, drivingmeans for Voperating the traversing-means, ajyieldable clutch connecting the drivingmeans with the` traversing-means to prevent tion` vWith a rotating Winding-mandrel, of a traverse-guide, a feedsl1aftl for traversing f the yguide, back and forth alongtlie mandrel,

a drivclsha'ft for rotating thefeed-shaft, and a clutch connectingthe drive-'shaft vvitlithe ieedshaft, said clutch being adapt-` ed to yield to permit lost motion of the feed-k shaftwhen the guide encounters an obstruction which causes undue resistanceto its movement. f

v1 2. In a Winding machine, the combination with; a rotating Winding-mandrel, of a traverse-guide, a feed-shaft fortraversing tlieguideY back andforth along the mandrel, y I y drive-shaft for rotating the 1feed-shaft a yieldable clutch connecting the drive-,shaft With the Vfeed-shaft to adapt the lattertobe withheld from rotation when the guide encounters undue resistance -to its, movement,

and lstopping-means operated lfrom the kclutch toarrestthe rotationoil y tlie drivef shaft when theresistance to the movement lof the guide is continued.

'y v13. In a Winding machinethe'cnnloifnation with a rotating `Winding-111andrel,oa .traverse-guide, a feed-shaftffor traversing the guideV with respectfto the mandrel, means for driving the 'feed-shaft, a clutch connecting the `drivinganeans with .the vfeed-sha1ft, said clutch adapted to `yield-When the guide encounters undue resistance toits movement,

rand stopping-means for arresting the operation of tine'y driving -means when the' clutch is `fully released. l

In testimony whereof We aEX our signa-` tures. ,l n

i EDWARD F. PARKS.

vCARL A. BRINK. i

GEORGEN. TAYLOR. i

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