US1887683A - Winding machine - Google Patents

Description

Nov. l5, 1932.

R. M. HEINTz 1,887,683

WINDING MACHINE Filed oct. 2, 192s 3 Sheeps-Sheet 1 MMM Nov. l5, 1932. R. M. HElNTz 1,837,633

WINDING MACHINE Filed Oct. 2, 1923 3 Sheets-Sheet 2 FIEEI.

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Nov. 15, 1932. R M HE|NTZ 1,887,683

wINDING- MACHINE Filed 001,. 2. 1923 3 Sheets-Sheet 3 Won# M Arroz/vf K Patented Nov. ,15, 1932 UNITED STATES PATENT OFFICE RALPH M. HEINTZ, 0F SAN FRANCISCO, CALIFORNIA, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO CHICAGO TELEPHONE SUPPLY COMPANY, OF ELKHART, INDIANA, A COB- POBATION 0F DELAWARE WINDIN G MACHINE Application led October 2, 1923. Serial No. 666,153.

This invention relates to a machine for winding coils, and more particularly to one adapted to wind an electrical conducting Wire or strip on a support. Such coils are frequently used for example as resistance elements in rheostats, especially when a bare conductor is used, so as to permit a movable coitact arm to travel over the surface of the co1 It is one of the objects of my invention to provide a simple and inexpensive winding machine of this character, whereby the coils ma be wound rapidly.

n many forms of small rheostats, the resistance element comprises a coil of wire of a single layer wound on a support having a circular form. This has the advantage that a contact arm, pivoted at the center of the circular support, is capable of traversing the entire coil upon rotational movement thereof. It is another object of my invention to provlde a machine capable of winding coils on a circular support.

In such machines it is highly desirable to vary the pitch of the winding, so that the total number of turns accommodated on the coil supportmay be chosen to suit the desired requirements as to resistance and current carrying capacity. It is still another object of my invention to provide a simple and easily adjusted machine whereby this winding pitch may be varied. 1

In many forms of wound resistances', the support upon which the resistance wire is wound is made from insulating material such as libre. rI take advantage of this fact in feeding this vsupport gradually to the wire, by employing a threaded member that engages and bites into the support, the pitch of the thread determining the pitch of the Winding on the support.

My invention possesses other advantageous features, some of which with the foregoing will be set forth at length in the followin description, where I shall outline in full that form of the invention which I have selected for illustration in the drawings accompanying and forming part of the present specification. Although I have shown in the drawings but one embodiment of my invention,

I do not desire to be limited thereto, since the invention as expressed in the claims may be embodied in other forms also.

Referring to the drawings:

Figure 1 is a side elevation of a winding machine embodying my invention;

Fig. 2 is an end elevation of the machlne shown in Fig. 1, taken from the right hand side thereof;

Fig. 3 is a top plan view of the same machine;

Fig. 4 is a diagrammatic view, similar to Fig. 3. but showing parts of the machine in an alternative position;

F ig. 5 is a fragmentary vertical sectional view of the machine, andillustrates certaln parts of the dri ving` mechanism;

Fig. 6 is a diagrammatic view used to explain the motions that take place in my machine;

Fig. 7 is a wiring diagram of the electric control that may be incorporated in my machine;

Fig. 8 is a plan view of one of the elements of my machine, which element serves as a guide for the support on which the wire is wound; and

Fig. 9 is a plan view of a resistance element as completely wound by the use of my machine.

A base 11, (Figs. 1 to 4) serves as a support for substantially all of the parts of the winding machine. A standard 12, supported on the base 11, provides for appropriate bearings in which the various rotatable elements may be journaled, particularly the devices that serve to hold and feed the support 13 (Figs. 3, 6 and 9) upon which the conducting wire 14 (Fig. 1) is to be wound. In the present instance, thc support or member 13 is shown as arcuate in form, with flat plane faces, but of course it may assume any other desired shape.

The principle of operation of the winding machine may perhaps be best understood from a consideration of the diagram, Fig. 6. In this diagram, I have shown the support 13 in cross section, and as carried at substantially the exact center of a rotating chuck or holder l5. An advancer or feeder 16 is shown, which is intended to represent some form of worm or screw that bites at 17 into the fiat side of support 13. By causing a relative rotation between members 16 and 13, the action of the screw threads of the feeder 16 will serve to advance the strip or support 13, and eut corresponding threads therein. The strip 13 will thus be advanced against the friction due to the tightening of the chuck or holder 15.

Since the support 13 is itself rotating, proper continuous engagement between it and the feeder 16 can be secured only by causing this feeder to move bodily or revolve in a planetary manner, in unison with the support 13, so that the axis of the feeder 16 describes a closed curve such as a circle 18. In order to effect this result in a convenient manner, the feeder 16 is rotatably supported on a common support upon which the chuck or holder 15 is mounted. The actual relative feeding rotation of feeder 16 about its own axis may also be conveniently produced in several of the member ways, one of which will be described in connection with the embodiment disclosed. As the strip 13 is advanced and rotated, the wire 14 is fed thereto from a stationary guide.

With this preliminary explanation of the underlying principles of the machine, the further detailed explanation of the actual embodiment may be more readily grasped. The support or standard 12 is provided with .a bearing bushingy 19 (Figs. 1 and 5) which is stationarily supported in the appropriately formed boss 20. Within this bushing is rotatably mounted the chuck support 21, which carries the chuck or holder 15 near one end. In order to drive this member 21, a gear wheel 22 is fastened to the member, as by the aid of screws 23 which ass through a flange 24 on the huhof the w eel, and into the end face 21; ,this structure is clearly shown in Fig. 5. Meshing with the wheel 22 is a pinion 25 (Figs. 2 and 3) which is fastened to a shaft 26. This shaft is journaled in a boss 27 of support 12, and carries at its other end a pulley 28, which may be driven by any appropriate source of motion, not "shown, whereby the support 21 will be ro- 50 tated.

The details of the clam or chuck 15, which is carried by the rotatable support 21, and which serves to hold the insulation strip 13, may best be understood from a consideration of Figs. 2, 3, 5 and 8. The lower portion 29 of the holder or chuck 15 is shown as formed integral with the support 21 and having substantially a half-round form. Y An upper guide member 30 is fastened to this lower portion, and as shown most clearly in Fig. 8, is provided with a guide slot 31. In the present instance this slot is arcuate, in order to. provide a guide for the arcuate strip 13 on which the resistance wire 14 is to be wound. The slot 31 opens in the end face of the chuck 15, as shown most clearly in Fig. 2, so that the strip 13 has at this opening, a substantially axial direction. The bottom 32 of this slot, upon which the strip 13 is disposed is arranged at such a level that the center of the strip 13, where it projects from this slot, coincides substantially with the center of rotation of the chuck 15. The member 30 may be fastened to the lower member 29 in any appropriate manner, as by the ald of the screws 33 (Fig. 3)

In order to hold the strip 13. with a slight amount of friction against the bottom- 32 of slot 31, I make use of a roller 34 which is adapted to extend into the slot and to engage the upper surface of strip 13. The roller 34 is pivoted in a pair of lugs 35 carried by a lever 36. This lever is plvotally supported at 37 on a lug 38 carried by the upper guide 30. In order to urge this lever downward so as to produce the desired force on the roller 34, a cam 39 (Fig. 2) is provided, whic is pivoted on an eye pin 40 passing thro gh lever 36 and fastened in the guide or clamp 30. A handle 41 is attached to the cam 39 for rotating it.

The mechanism for ,advancing the stri 13 in the guide slot 31 will now e descri ed. The front portion (Fig. 8) of the guide slot 31 is cut away as at 42, to permit a' threaded feeder or worm 43 to pass up into the slot and engage and bite into the lower surface of strip 13. To feed the strip 13 therefore, it is necessary to rotate worm'43 on its axis, which is parallel to but displaced from the axis of rotation of chuck 15. To permit this rotation to take place, the worm 1s fastened as by threading, to a rod or shaft 44 which is mounted rotatably support 21. It is thus evident that as this support rotates, the shaft 44 and worm 43 have a planetary motion around the axis of support 21. The lower chuck member 29 has a cut away portion 45 as shown most clearly in Figs. 2 and 5, in the nature of a counterbore for the journal aperture 46, whereby the worm 43is well protected. The rotation of worm strip 13 by cuttin threads in the bottom thereof, is produce by holding the shaft 44 against rotation about its own axis as regards a stationary point of reference. For this pur ose the shaft 44 is pinned to a lever arm 47 Fig. 1) as by the aid of pin 48, and this arm has a slot and pin connection with a stationary element; the connection in this instance is formed by the/slot 49 in lever 47, and a pin 50 held in a'lug 51 on the base 11. This connection permits arm47 to follow the planetary movement of the shaft 44, but prevents rotation of the shaft 44 as regards its own axis. By referring to the diagram of Fig. 6, where element 16 represents the worm, 1t is evident that under such circum- 43 for feeding the but eccentrically in the y stances, each planetary revolution of feeder 16 in the path 18 will produce` the same feeding effect as if the parts and 13 were stationary, and element 16 had rotated once about its own axis. To make this feeding action clearer, the motion of a point 52 of feeder 16 may be analyzed. This point is just 180 away from engagement with the strip 13; if now the planetary motion is produced, the point 52 will remain at the bottom of the feeder 16. After a planetary'movement ofy 180, this bottom point will be in engagement with the strip 13, since then the entire feeder 16 will be disposed above the strip, and not below it, as in the diagram. On continued movement of another 180 the point 52 will gradually return to the position 'of Fig. 6, and the strip 13 will have been fed forward out of the slot opening by a distance equal to the pitch of the thread on worm 43.

One of the advantages of my invention resides in the fact that the worm 43 may readily be removed from shaft 44, and another of different pitch substituted. In this Way it is possible to control the rate of feed of the strip, and thereby the spacing of the turns of wire 14 thereon. Due to the great uniformity of the feed when produced by this means, it is entirely practicable to wind the Wire very'closely together without any likelihoodof adjacent turns touching.

' The wire 14 is fed to the rotating strip or support 13 near the place where it extrudes out of that opening' of slot- 31, which is coaxial with the rotation of clamp 15, as shown in Fig. 1. A winding guide 53 is provided through which the wire is threaded from a source of supply. In case the strip 13 is straight,I the guide 53 may be left stationary, since vunder such circumstances there can never be any interference between the strip 13 and the guide. However, in the present instance the strip 13 mayk extend so far out of the slot 32 on continued feeding by worm 43, that the guide 53 will be in vits path of movement. This condition is illustrated in Fig. 3. In order to overcome this difficulty and to permit the support or strip 13 to be fed further without interfering-with the guide 53, I arrange this guide in such a way that it may be moved from the position of Fig. 3 tok that 'of Fig. 4, without interfering with the feed of the wire 14 through the vertical opening 84. To effect this result, I support the guide 53 on a yoke 54 (Fig. 1) which is pivoted on a vertical a'Xis by the aid of the shaft 55 in the support 11. The axis of this shaft passes through the center of the vertical guide opening 84, so that rotation of yoke 54 will in no Wise affect the point of applicationv of the wire 14 on the strip 13. The guide 53 may be retained in the position of Fig. 3 by the aid of a pivoted cat-ch 56 which engages a ratchet wheel 57 carried by the yoke shaft 55. A spring 58 fastened to the lower end of yoke 54 and to a stationary upright tends to rotate the guide 53 to the position of Fig. 4, but is normally prevented by the aid of the catch mechanism just described. YA spring 59 urges the catch 56 to engaging position.

The movement of guide 53 toward the position of Fig. 4 is limited by a stop pin 60, and in the other direction by another pin 61. Furthermore, if desired, a dash pot 62 may be connected to yoke 54 to prevent too violent movement of this yoke when the pawl 56 is released.

Although it is quite possible to perform the movement of the guide 53 by hand whenever the operator finds it necessary, I prefer to arrange matters in such a way that the guide is moved automatically' in response to the movement of the supportl or strip 13 near to interfering position. For this purpose I provide an electromagnet 63 for releasing catch 56 at the proper time. For this purpose the electromagnct armature is provided with a movable rod 64, which is connected to the catch'56 by the aid of the collar 65 carried by rod 64, and a slotted fork 66 fastened to the catch 56. Thel arrangement is such that energization of magnet (i3 causes the catch 56 to be rotated against the action of spring 59, aseshown in Fig. 4, and permits spring 58 to pull' the guide to the position of this figure.

In order to make. the release of catch 56 automatic, I provide certain contact making devices that control the circuit of the magnet (i3. Thus mounted on an insulation block 67 fastened to chuck 15 is a contact spring 68 *i (shown most clearly in Fig. 2). This spring is arranged to make contact with a grounded screw 69 supported on a metal block 70 on chuck 15; however the spring 68 may be held away from the screw 69 by strip 13 where it projects from that side of slot 32 which forms the entrance point for the strip. The contact spring 68 is disposed for this purpose over this opening of the slot. Furthermore, it is of such proportions that the strip 13 is withdrawn from beneath it just before the other end of the strip interferes with guide 53. As soon as this occurs', the contact spring 68 'connects with screw 69, and the magnet 63 becomes energized. y

In order to complete the VAcircuit to contact spring 68, which must of course rotatewith the chuck 15, I provide a collector ring arrangement. Inst-he present instance this is shown as made up of astationary collector ringr 71. supported on an insulation ring 7?. fastened to bushing 19. An arm 73 carryinga spring pressed brush 74 is fastened to block 67 and connected to the spring 68.

The arrangement is ,preferably such that as soon as magnet63 accomplishes its purpose of releasing catch 56. it is deenergized. In this way there is a saving in current consumption. To effect this result, a pair of contact springs 75 and 76 are arranged in the magnet circuit, as shown in Fig. 7, and

are normally in engagement. However, when the guide 53 is in the position of Fig. 4, the yoke 54 serves to urge spring 75 out of engagement with spring 76, and thereby to break the circuit. An insulation strip 77 is carried by the yoke 54 which is adapted to contact with the spring to flex it to the open position. Both of these springs are mounted on an insulation block 78 fastened to the side of frame 12.

The complete circuit for the electromagnet 63 is indicated in Fig. 7. One side of the magnet winding may be grounded, as indicated at 78, the other side connecting, as by lead 79, to'one terminal of a source of electrical energy. The other terminal may be connected by lead 80 to spring 76; the remainder of thev circuit including collector ring 71, brush 74, spring 68, screw 69, and ground 81. While the strip 13 is holding spring 68 ofl:` of screw 69, the magnet 6 3 is deenergized. As-soon as the spring 68 connects with screw 69, the-electromagnet releases the catch 56, guide 53 moves to the left hand position, spring 75 is urged away from spring 76, and the magnet is deener fized.

Having now described the construction of the machine, I shall now summarize its operation. With the machine stationary, and guide 53 latched in the position of Fig. 3, a worin 43 is fastened to shaft 44, which worm is chosen of the proper pitch for the winding .to be effected. The clamping handle 41 is now released, so as to relieve pressure on roller 34, and a. strip 13 is inserted in slot 31 between this roller and the worm 43. The position of strip 13 for the start is adjusted, after which the pressure on roller 34 is applied by the aid of handle 41. The wire 14 of the desired size and material may now be led through the guide aperture 82 of guide and anchored to the strip 13, in any appropriate manner. The machine may now bc rotated, each rotation serving to wind one turn on the strip 13 and to advance it by the pitch of the threads on worm 43. While the winding operation is in its first stages, the strip 13 projects out of the slot 31 under the spring 68; the guide 53 being at the right, this projection does not interfere with the guide. Feeding movement of strip 13 far enough to withdraw it from beneath spring 6.8 will cause the automatic movement of guide 53 to the left, as described hereinbefore. Thewinding operation can now continue to conclusion without interference between the guide 53 and strip 13. As soon as the Winding is completed. the machine is stopped. roller 34 is released, and the wound element withdrawn from the machine.

It is evident that the machine ma 7 readily be utilized for winding many different kinds of elements, by simply choosing the proper worm feeder 43,and by appropriately forming the slot for the accommodation of the member on which the wire is to be wound.

I claim:

1. In a winding machine, means for revolving about an axis va curved member upon which the winding is to be placed, and means for gradually feeding this member forward, comprising a threaded element having an axis parallel to the first axis, and arranged to impart movement to the member.

2. In a winding machine, means gradually advancing a member upon which the winding is to be placed, comprising a threaded feeder having an axis parallel to the direction of advance of the member, the threads on said feeder being arranged to bite into and form threads in the member foradvancing it.

3. In a winding machine, a rotatable guide having a slot for guiding a flat member which is to be wound, and a. feeder for the member supported below the slot and adapted to engage the member for advancing it.

4. In a winding machine, means for rotating a flat member upon which the winding is to be placed, and means for gradually feeding this member in an axial direction, comprising a threaded element having an axis parallel to that of the rotation of the member, some of the threads of said element engaging the flat side of the member, and arranged to provide relative movement of the threads and the member.

5. In a winding machine, means for gradually advancing a fiat member upon which the winding is to be placed, comprising a threaded feeder having an axis parallel to the direction of advance of thc member, the threads on said element being arranged to bite into and form threads in the fiat side of the member for advancing it.

6. In a. winding machine, a rotatable slotted guide for a flat member upon which the winding is to be placed, said slot being arranged to guide thel member, and means for advancing said member in the direction of the axis of rotation, comprising a threaded worm having an axis displaced from the first axis, the threads of said Worm being arranged to engage the fiat side of the member, means whereby said threaded worm is'revolved upon rotation of the member, about said first axis, and means whereby this planetary revolution causes relative .movement between the threads of the worm and the member.

7. In a winding machine, a rotatable support, a slotted clamp for holding a fiat member on the support, said member being the element upon which the winding is to be placed, the clamp being arranged so that rotation of the support causes rotation of the fiat member about the axis of the support, the slotl in the clamp serving as a. guide for the member, a shaft rotatabiy mounted on an eccentric but parallel axis inthe support, a

threaded worm on the support having a portion thereof extending into the slot for engaging the member, and means whereby the planetary movement of the worm as the support is rotated, will advance the member 1n the slot, comprising an arm rigidly fastened to the worm shaft, a stationary stand, and a sliding connection between the stand and the arm.

8. In a machine for winding a coil on a member of arcuate form, a guide having an opening for the member, means for rotating the guide so that the member describes a rotary motion -about a stationary axis passing through the opening, and means for advancing the member gradually ,out of the guide, comprising a threaded feeder arranged to bite into and form threads in the member for advancing it.

9. In a machine for winding a coil on a member of arcuate form, a rotatable holder for the member, and means for advancing the member in thedirection of the axis of rotation, comprising a threaded worm having an "axis displaced from the first axis, means whereby said worm is revolved upon rotation of the member, about the first axis, and neans whereby this planetary revolution causes relative movement between the threads of the worm and the arcuate member.

10. In a winding machine, a rotatable holder having an arcuate slot for guiding an arcuate member having flat plane faces, upon which a coil is to be wound, and a feeder for the member supported below the slot and adapted to engage one of the flat faces of the nliember for advancing it, near the end of the s ot.

11. In a winding machine, means for rotating a flat, arcuate member upon which the winding is to be placed, and means for gradually feeding this .member in an axial direction so that this axis of rotation constantly passes through the central point of a cross section of the member, comprisin a thread# ed feeder having an axis paralle to that of the rotation of kthe member, some of the threads of said feeder enga `ng the flat side of the member, and arrange to provide relative movement of the threads and the member.

12. In a winding machine, means for gradually advancinl a flat, arcuate member upon which the winding is to be placed through an opening, comprising a threaded feeder having an axis parallel to the direction of advance of the member where it leaves the opening, the threads on said feeder being arranged to bite into and form threadsin the fiat side of the member and near the openin whereby the arcuate member may be gradually passed through said opening.

13. In a winding machine, a rotatable guide having an arcuate slot for an arcuate fiat member upon which the winding is to be placed, said slot being arranged to guide the member and opening in an axial direction, and means for advancin said member out of the slot and in the direction of the axis of rotation, comprising a threaded worm having an axis displaced from said axis, the threads of said Worm being arranged to engage the yfiat side of the member and near the slot opening, means whereby said threaded worm is revolved upon rotation of the guide, about said axis, and means whereby this planetary revolution causes relative movement between the threads of the worm and the member.

lll. In a winding machine, a rotatable support, a clamp having an arcuate slot therein opening in a direction coaxial with the rotation of the support, said slot serving as a guide for an arcuate flat member upon which the winding is to be placed, a shaft rotatably mounted on an eccentric, but parallel axis in the support, a threaded worm on the shaft having a portion thereof extending into the slot near its coaxial opening for engaging the member, and means whereby the planetary movement of the worm as the support is rotated, will advance the member out of the opening, comprisin an arm rigidly fastened to the worm sha t, a stationary stand, and a sliding connection between the stand and the arm.

15. In a machine for winding material on an arcuate member, a rotatable holder for the member, the axis of rotation being such that it passes through the central point of a cross section of the member, means for advancing said member from the holder so that the member is caused radually to move outwardly in an arcuate irection, a guide for feeding the material to the member, and means for ,moving said guide out of the Way to the end of the rotating member when it projects far enough out of the holder.

16. In a machine for winding material on an arcuate member, a rotatable holder for the member, means for gradually advancing said member out of the holder so that it moves therefrom in an arcuate direction, a guide for feeding the material to the member, and means for moving said guide so as to be free at all stages of the winding process from interference with the ends of the member as it rotates.

17. In a machine for winding material on an arcuate member, a rotatable holder for the member, means for gradually advancing said member out of the holder so that it moves therefrom in an arcuate direction, a guide for feeding the material to the member, means for pivotally supporting said guide in such a Way that pivotal movement thereof will main-` tain the point of feed of the material undisturbed, and means operative in response to the advancement of the member near to interfering position with the guide, for rotating said guide on its pivot out of the path of the end of the member.

yes'

-rial undisturbed, and means operative in response to the advancement of the member near to interfering ition with the guide, for rotating said 1de on its pivot out of the path of the mem r, comprising an electromagnet for causing the rotation to take place, and a pair of contacts controlling the magnet, said contacts being operated in response to the movement of the member out of the holder.

19, In a machine for windin material on an arcuate member, a rotatable older for the member, means for gradually advancing said member out of the holder sothat it moves therefrom in an arcuate direction, a guide for feedin the material to the member, means for pivota 1y supporting said guide in such a way that pivotal movement thereof will maintain the point of feed of the material undisturbed, and means o rative in response to the advancement o the member near to interfering position with the guide, for rotating said guide on its pivot out of the path of the memer, comprising an electromagnet for causing the rotation to take place, and a pair of contacts controlling the magnet and resiliently urged to engage each other, said contacts bein arrange 1n the path of feed of the mem r out of the holder and in such a way that the member passes between them to prevent their engagement, whereby upon sufficient advancement of the member, these contacts are permitted to engage.

20. In a machine for winding material on an arcuate member, a rotatable holder for the member, means for gradually advancing l said member out of the holder. so that it moves therefrom in an arcuate direction, a

ide for feeding the material to the memr, means for pivotally supporting said guide in such a way that pivotal movement thereof will maintain the point of feed of the material undisturbed, and means operative in response to theadvancement of the member near to interfering position with the guide, for rotatin said guide on its pivot out of the path o the member, comprising an electromagnet for causing the rotation to Y take place, a pair of contacts energizing the magnet, said contacts bein operated in response to the movement o the member out of the holder, and a pair of contacts operated by said pivotal movement of the guide to deener 'ze the electromagnet.

21, a machine for windin material on an arcuate melber, a rotatab e holderfor the member, means for gradually advancing said member out of the holder so that it moves therefrom in an arcuate direction, a

ide for feeding Kthe material to the memr, means for pivotally supporting said i ide in such a way that pivotal m'ovement t ereof will maintain the point of feed of the material undisturbed, and means operative in response-to the advancement ot the member near to interfering position with the guide, for rotatin said guide on its pivot out of the path o the member, comprlsing au electromagnet for causing the rotation to take place, a pair of contacts controlling the magnet and resilientl urged to engage each other, said contacts being arranged in the path of feed of the member out of the holder and in such a way that the member passes between them to whereby u on s cient advancement of the member, t ese contacts are permitted to engage and energize the electromagnet, and a palr of contacts operated in. response to the pivotal movement of the guide to deenergize the electromagnet.

22. In a machine for winding material on an arcuate member, a rotatable holder for `the member, means for gradually advancing said member out of the holder so that it moves therefrom in an arcuate direction, a

ide for feeding the material toz the memgr, means for pivotally supporting said guide in such a way that pivotal movement thereof will maintain the point of feed of the material undisturbed, and means operative in response to the advancement of the member near to interfering position with the guide, for rotating` said i e on its pivot out of the path of the en of the member com rising means resiliently urging said gui e to rotate about its pivotal support, a catchrfor preventing said movement, an elecrevent their engagement,y

ioc-

tromagnet for releasing the catch, and con f 23. In a machine for winding material on t an 'arcuate member, a rotatable holder for the member, means for gradually advancing said member-out of the holder so that it moves therefrom in an arcuate direction, a guide for feeding the material to the member, means for pivotally supporting said guide in such a way that pivotal movement thereof will maintain the point of feed of the material undisturbed, and means operative in response to the advancement of the member near to interfering position with the guir'. I for rotating said guide on its ivot out of the path of the end of the mem r comprising means resiliently urging said guide to rotate about its pivotal support, a catch for preventing sa1d movement, an electroma et for releasing the catch, contacts operate in responseto the advancement of the member out of the holder for energizing the electromaiet, and contacts operated in response to t e pivotal movement of the guide for deenergizing the electroma et.

24. In a winding macihe, means for advancin a member upon which the winding is to be p aced, said means including a worm having threads for engaging said member,

g and means for causing a relative rotary motion between said worm and member.

25.. In a winding machine, means for rotating a member upoii which the winding is to be placed, and means for advancing it in the direction of the axis of rotation, comprising a worm having threads for engaging said member, and means for cau'sin ya relative rotary movement between sai member and worm. v v

26. In combination a strip feeding chuck, means for rotating said chuck, a member having cutting threads for engaging said strip at the end of the chuck, and means for causing a wire to be wound automatically upon said -stri issuing from the chuck.

2 In an apparatus for winding a conductor on a supporting element, a cutting tool, means for rotating the element and simultaneously advancing it axially in engagement with the cutting tool, the said tool delnng a Agroove therein, and means for causing the successive turns of the conductor to be spaced on the supporting element in accordance with the grooves defined by the cutting tool.

28. A winding machine having, in combination, means to rotate a member to be wound, a body having a plurality of spaced cutting edges adapted to be pressed onto the rotating member at an angle thereof, and means for guiding the material being wound on the member.

29. A winding machine comprising means for rotating the member upon which the winding is to be laced, and means for advancing said mem er in the direction of the axis of rotation, comprising a worm having threads for engaging said member and hav- 'ing an axis displaced from the first axis,

means whereby-said threaded worm is revolved about the first axis upon rotationv of the member, and means whereby this planetary revolution causes relative movement between the threads of the worm and the memi'. 30. In a winding machine, means for rotating about an axis a member upon which a winding is placed,.means for delivering a Winding to saidmember for winding thereon by said rotation, and means having ositive pushing engagement with said mem er and including a threaded element having an axis said rotating means for positively pushing said member in an endwise direction to distribute the winding along the member.

31. In a winding machine, a chuck rotatable about an axis and fixed against translagenerally parallel with the axis of rotation of tional movement, said chuck having a slot of a section to receive a member upon which a winding is placed, means for rotating said chuck to wind the winding on said member,

,and means for simultaneously and positively long slot to receive a member upon which a lwinding is to be placed, means for rotating said chuck to wind the winding on said member, and means having positive advancing engagement with said member and including a threaded element having an axis parallel to said first, axis for advancing the member through said slot and with respect to said chuck simultaneously with, the rotation of said chuck to distribute the winding along the member.

33. In a Winding machine, a chuck rotatable about an axis and having a generally oblong slot to receive a member upon which a Winding is to be placed, means for rotating said chuck to wind the winding on said member, and means having positive advancing engagement with said member and including a threaded element for advancing the member through said slot and with respect to said chuck simultaneously with the rotation of said chuck to distribute the winding along the member.

In testimony whereof I allix m signature.

RALPH M. EIN TZ.

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