US1919994A

US1919994A - Coil winding machine

Info

Publication number: US1919994A
Application number: US383482A
Authority: US
Inventors: Jacob J Vienneau
Original assignee: General Electric Co
Current assignee: General Electric Co
Priority date: 1929-08-05
Filing date: 1929-08-05
Publication date: 1933-07-25
Anticipated expiration: 1950-07-25

Description

July 25, 1933.

J. J. VIENNEAU 1,919,994

COIL WINDING MACHINE 2 Sheets-Sheet 1 Filed Aug. 5, 1929 2 2 'IIIIIIIIIII:

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' g His Att y July 25, 1933. J J vlENNEAU 1,919,994

COIL WINDING MACHINE Fii ed Aug. 5, 1929 2 Sheets-Sheet 2 Inventor: Jacob J. Vienneau,

0% His At-torneg Patented July 25, 1933 UNET TAT FEE JACOB J. VIENNEAU, F PITTSFIELD, MASSACHUSETTS, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK C0111 WINDING Application filed August 5, 1929. Serial No. 383,482.

My invention relates to coil winding machines, more particularly to means for winding layers of insulation between the layers of wire or conductor forming the coil, and

has for its object the provision of an improved coil winding machine of this character.

Although obviously it is not limited thereto, my invention is particularly useful in connection with machines for winding transformer coils and the like.

When an electrical conductor is wound into a coil for use in such apparatus as transformers, for example, it is necessary to insulate the layers of the conductors, particularly the end portions of the layers, from each other with great care, since the electrical potential from layer to layer is proportional to the number of turns in each layer and also to the potential between each turn.

In order to insulate the layers of the coil, it is common to apply the insulating 'material to the winding spool concurrently with the electrical conductor so that a layer of the insulating material will be deposited between each pair of conductor layers. In one o of these arrangements, cotton thread is used to insulate the layers and is wound cross- 9 wise of the coil several times while one turn of the conductor is being wound. manner the cotton thread forms insulating surfaces upon which the successive turns of the layer being wound and the turns of the next succeeding layer are supported. Moreover, a layer of the insulating thread is deposited between the successive turns forming each layer. It will be understood that the cotton thread serves both to insulate and secure the electrical windings.

Some difiiculty has been experienced with this arrangement, however, in that the cotton insulation was not deposited throughout the full length of the coil. This was due to the fact that it was impossible, heretofore, to deposit the cotton thread against the inner faces of the spool flanges. As a result, often times, the end turns of one, layer would drop down into the space allotted to the end turnsof the previous layer. It will In this be obvious that this is a dam erous condition since, as is well understoo the highest potential between layers occurs at the end turns.

lln one of its aspects, my invention contemplates the provision of an electrical coil wherein the cotton insulation is applied in layers throughout the full length of the coil and moreover, is deposited in relatively large amounts between the end turns of successive layers. Thus, my invention contemplates the provision of a better insulated and more uniform electrical winding.

In carrying out my invention in one form thereof, 1 provide suitable means for guiding the thread to the spool and control the guiding means so that the thread is wound crosswise upon the spool to form insulating layers or surfaces upon which the conductor will be wound. Moreover, I provide auxiliary control means for the guiding means so that the thread is deposited snugly against the inner' surfaces of the spool flanges.

For a more complete understanding of my invention reference should be had to the accompanying drawing in which Figure 1 is a plan of a portion of a winding machine embodying my invention; Figure 2 is a section taken through the line 2-2 of Figure 1; Figure 3 is an end elevation of a portion of the winding machine shown in Figure 1; Figure 4 is a diagrammatic view illustrating the manner in which the cotton insulating thread is wound upon the spool; Figure 5 is a plan of a portion of a winding 'machine embodying a modified form of my invention; Figure 6 is an end elevation of the winding machine shown in Figure 5; and Figure 7 is a bottom plan of a portion of the winding machineshown in Figure 5 illustrating certainstructural details.

Referring to Figures 1 to 3 inclusive of the drawing, in one form of my invention the spool 10 on which the coil is to be wound is carried on a suitable spindle or mandrel 11. It will be understood that the spool. will be secured to the mandrel, which will be provided with suitable operating means (not shown), so that the spool may be rotated in order to wind the electrical conductor thereon. Moreover, it will be understood that the electrical conductor to be wound will be guided to the spool by means of a suitable distributor or guiding means so as to be wound thereon spirally and in ii. plurality of layers. One form of such a winding machine is described and claimed in my United States Patent No. 1,504,004 and dated August 5, 192a.

-As has been pointed out the successive turns of each layer and likewise the successiv e layers themselves will be insulated from each other by means of suitable cotton in sulating layers or surfaces.

As shown (Figure 1) the cotton thread 13, whlch I prefer to use to insulate the electrical coil, is guided to thespool 10 by means of a distributor head 14. The distributor head 1& is provided with a passageway 140; through which'the thread 13 to be wound is passed to the spool. It will be understood that the distributor head 14 will be controlled so that the cotton thread will porting arm 15. This frame is mounted to reciprocate upon a longitudinal supporting guide rod 16. This rod is supported by means of a pair of

suitable brackets

17, 17 a so that its axis is substantially parallel with the longitudinal axis of the spool. It will be observed that by reason of this construction, the frame when reciprocated upon its guide rod 16 will move the distributor head back and forth with respect to the longitudinal axis of the spool so as to guide the insulating thread back and forth crosswise of the spool. It will be observed that the frame 15 is. free to rotate about its supporting rod 16 so that the distributor head will be permitted to move radially to adjust itself to the radial build of the coil. This construction also permits the head to adjust itself to spools having various forms. Thus, for example the distributor head will have suficient freedom of movement to ride freely over the corners of a rectangular coil.

I provide suitable operating means to reciprocate the frame 15. As shown, 1 provide a frame 15w which is mounted upon the rod 16 by means of bearing members 15b and 150. These members are positioned upon opposite sides of and about the frame 15 so that reciprocating motion will be imparted to the distributor head by the reciprocation of the frame 150.. A suitable guide member 18 is provided for the frame 150;. As

neiaeea shown, this member is provided with a re cess 180, which serves to slidably receive the end portion of the frame. able cam member 20 for reciprocating the frame 15a, the cam member being rotatably mounted upon a suitable shaft or spindle 21. as 'shown in Figure 1, and being mechan ically connected with the frame by means of an operating arm 22. Thisoperating arm is secured at one end to the frame 15a by any suitable means, as for instance, by screw fastening means 23 and is provided at its other end with a follower 24 which is adapted to be engaged by a suitable cam surface 2041!. provided on the cam member. As shown, the cam member 20 is provided with a pulley 25 which serves to operably receive a driving belt 26. It will be understood that this' belt will be driven by any suitable source of power (not shown). Preferably, however, the belt will be driven from a suitably operating member provided on the winding machine.

It will be understood that the cam will be rotated at such a speed and that the cam surface 20a will be given such a shape that the distributor head 14 will be given a number of reciprocations while each turn of the conductor is being wound. Preferably, however, the .distributor head will be caused to traverse the spool an odd number of times for each revolution of the spool. tion is given to the distributor head in order to prevent the cross-overs from building up over each other. Thus, it will be clear that if the distributor head were reciprocated twice (for example) for each complete revolution of the spool, the cross-overs would pile up one above the other. Therefore, to space the cross-overs about the periphery of the spool it is preferable to give the distributor head a number of reciprocations, a fraction less than or a fraction more than two, for example,for each complete revolution of the spool. By reason of this control of the distributor head, it is possible to obtain practically complete cotton insulating surfaces upon which the electrical conductor may be wound, as shown diagrammatically in Figure 4:. 4

It is also preferable to delay the reversal of the distributor head somewhat at each end of its travel so that the end turns of the cross-overs will be wound along a circumference of the spool rather than being sharply defined as would be the case if the distributor head were reversed instantly upon the completion of its travel in one direction. It will be observed by reference to Figure 4 that this control of the distributor head insures a rather heavy deposit of the cotton thread between the end turns of the successive layers where, as has been pointed out, the highest potential in the coil occurs.

In order to give the distributor head this I provide a suit- This modelay before its reversal, I interpose suitable operable connections between the cam and the frame 15. As shown (Figure 2), the arm or lever 22 comprises two portions 220 and 226, the portion 22a being connected to the frame 15a and the portion 22?) being connected with the" cam follower 24. I provide a pin and slot connection 27 between the members 220 and 226 so as to permit relative longitudinal movement between these members. However, the members are normally held together by means of a friction device 28 so that they will move as a .single or unitary member. The cam portion 20a is proportioned so that-the distributor head 14 arrives at the end of its travel in each direction before the follower 24-. arrives at the end of its travel in the corresponding direction. Thus as will be readily understood, the distributor head 14 will be brought to each spool flange slightly before the cam follower 24 arrives at its end position from which position the continued rotation of the cam causes reversal of the distributor head. The head 14, therefore, will be brought to rest while the arm 22?) will continue to move so as to permit the continued motion of the cam follower. Thus at each end of its longitudinal path of movement, the head remains stationary for a slight interval by reason of the aforementioned pin and .slot connection, so that the end turns will be wound along a circumference of the spool. Obviously, the pause in the motion of the distributor head may be varied so as to provide the desired circumferential length of the end turns.

Ashas been pointed out, with the winding machines, heretofore in use, much difficulty has been experienced by reason of the fact that the distributors did not deposit the cotton thread throughout the full length of the spool. I overcome this difliculty by suitably arranging the passageway 14a provided in the distributor head and by suitably controls ling the motion of the distributor head. As shown, in Figures 1 and 4, the distributor head 14: is given a disc-like form and its assageway is arranged so that the mouth 0 the passageway opens upon the peripheral surface of the disc. Moreover, as shown, the distributor head is mounted for rotation upon its supporting frame. I provide suitable means for controlling the rotation of the head 14 so that it is rotated through an angle of 180 for each reversed longitudinal movement of the head. It will be observed, therefore, that if the mouth of the passages way be positioned adjacent the inner surface of one spool flange with the frame at one i end of its path of movement, this month will be positioned adjacent the inner surface of the other spool flange with the frame at the other end of its path of movement. Moreover, it will be observed that by reason of this construction and control of the distributor head, the cotton thread will be guided into position adjacent the inner surfaces of the spool flanges.

Preferably, the distributor head 14 is rotated responsively to the'motion of the distributor frame. As shown (Figure 1), I provide a suitable operating belt 30 for the distributor head, this belt being secured at one 'end to a bracket 31, from which bracket it is passed over an idler pulley 32, which is rotatably mounted upon the frame 15, to a pulley 146 provided on the distributor head from which pulley it is passed over a second idler pulley 33, which also is mounted on the distributor frame; to a second bracket 34. As is well understood by reason of this arrangement of the belt, rotary motion will be imparted to the distributor head when its supporting frame is reciprocated. By suitably proportioning the

pulleys

14b, 32 and 33, the distributor head will be rotated through an angle of 180 while the head is being moved longitudinally from one spool head to the other.

It will be observed, therefore, that the mouth of the passageway 140, will always open toward the inner surface of the spool flange to which it is beingmoved. In order to prevent the mouth of the passageway from being brought into contact with the spool heads and thus, to prevent possible damage to the cotton thread, I provide the distributor head with a suitable protecting ring 35 -which, as shown, is mounted upon the distributor head both for rotation and translation. Thus, the ring while permitting the mouth of the passageway to be brought adj acent the inner surfaces of the spool flanges will serve to space the passageway somewhat from these surfaces so as to eliminate any danger of the cotton thread being damaged.

that wear is minimized.

lntlpewoperation of this form of the invention, it ill be understood that the distributor head willbe given a compound motion of rotation and translation so that the cotton thread will be wound to form complete insulating surfaces throughout substantially the entire length of the coil. The cotton while being wound will be maintained under slight tension. However, this tension will not be great enough to pull the end turns away from the flanges. The end turns are also secured by reason of the fact that they will be deposited in the spaces between, the conductors and the flanges.

The cotton thread, which is deposited throughout the coil, insures a better insulated and a more uniform winding. By

trical potential occurs are thoroughly insulated. Moreover, all the turns are securely anchored in place. Referring to Figures 5, .6 and 7 of the drawings, T have shown a modified form of my invention as applied to a winding machine comprising two flanged winding spools 40 and 41 whereby two electrical coils may be formed-simultaneously. These spools are provided with distributor heads 42 and 43 respectively each of which, as shown, is rotatably mounted upon a common distributor frame 44. Each distributor head is of substantially the same construction as the distributor head shown in Figures 1 to 4. Thus, these heads are of disc-like formation and are provided with passages 42a: and 42?), respectively, the mouths of which open upon the peripheral surfaces of their respective discs. .Moreover, each distributor head is provided with a protecting ring which, as before, .serves to prevent damage to the cotton thread.

The frame 44 is mounted for reciprocation with respect to the longitudinal axes of the spools upon a supporting rod 47 ,which as shown in Figure 5, is supported in substantially parallel relation with these'axes. As shown, the frame is provided with sleeve bearing members 44a and 441) which are mounted to slidably receive the rod 47. llt

' will be understood that in operation, the

spools will serve to support the distributor heads. The frame 44 will move about its supportingrod 47 as the distributors .are moved radially to adjust themselves to the radial build of their respective coils. In the event that rectangular or other non-circular coils are bein formed, the frame 44 will have sufficient reedom of movement so that the distributor heads will be free to ride over the corners of the respective coils and follow the contour 'of the form.

7 As before, this frame 44 will be reciprocated a number of times-while each conductor length is being wound so that the cotton thread will be wound crosswise to form cotton insulating surfaces upon which the conductor is wound. The operating means for the frame 44 comprises an actuating frame 48 and an actuating member 50 arranged for reciprocation so that when it is reciprocated, the frame will be carried with it. As shown, the actuating frame 48 is provided with sleeve bearing members 48a and 486, which abut the bearing members 44m and 445, respectively. These members 48a and 4872 are connected by means of a sleeve hearing member 480. Preferably, although not necessarily so, the actuating member 50 will be mounted to reciprocate upon the sleeve portion 480. As shown, the actuating memer 50 is provided with a pair of oppositely disposed flanges or collars 50a, 505 which serve to receive an actuating pin 51. This pin 51 is secured to one end of an operating lever 52 which will be moved back and forth on its pivoted support 53 by means of suitable operating means (not shown) mechanically connected at 54 to the lever.

Preferably, however, a cam operating mechanism similar to that shown for opervating the frame 15 will be provided to operate the lever 52. It will be understood, therefore, that the frame 44 will be given a motion so that the end turns of the cotton thread will be wound alon a circumference of the spool as shown in Figure 4.

As shown, the actuating member 50 is mounted upon the sleeve portion 480 between the sleeves 48a and 486 so that it has chain 56. Thus as shown in Figure 7, this driving chain is wrapped about the sprocket gears 55a provided on the rotatable members and is adjustably secured at its oppo- I site ends to the

flanges

50a, 50?) provided on the actuating member 50. It will be observed that by reason of this construction reciprocating motion of the actuating member 50 with respect to the frame 44 will impart rotary motion to the members 55. I transmit this rotary motion of each member '55 to its distributor head by means of a v suitable shaft 57 which is mounted upon the distributor frame 44. As shown, one end of each shaft is provided with a spur gear 58 to mesh with a spur gear 55?) mounted on its rotatable member 55 and is provided at its other end with a miter gear 60 which meshes with a miter gear 61 secured to its distributor head. It will be observed, therefore, that the longitudinal movement of the actuating member 50 with respect to its frame will impart rotary motion to the rotatably mounted member 55 and this motion in turn will be transmitted through the shafts 57 to the distributor heads.

Itwill be understood that the actuating member 50 will be given suflicient independent motion so that when it is moved the full distance from one sleeve 480:, 48?) to the other, the distributor heads will be rotated able pivoted

arms

62 and 63, respectively,

on the distributor frame 44. These pivoted arms normally will be maintained inparal lel'relation by means of centering

springs

64 and 65 respectively. It will be observed that the shafts 57 are of a flexible character. The foregoing construction provides for self adjustment of the distributor heads to the flanges of the spools. flanges vary in thickness or the spools themselves are not with respect to t epath of movement of the distributor heads, the head which first engages a flange will be moved relatively to its frame on its pivoted supporting arm. This action permits the frame to carry the other distributor head through its full movement into engagement with the flange of the other spool. The flexible shafts, of course, permit this relative movement bee tween the distributor head and its supportin frame.

operation, it will be understood that the actuating member 50 will be reciprocated to move the distributor heads back and forth between their respective .spool flanges so as to wind the insulating cotton crosswise upon the spool in a plurality of layers. It will be observed, however, that the actuating member 50 by reason of its independent motion will rotate the distributor heads through 180 before they are given the motion of translation between the spool heads. Thus, the mouth of the thread passageway which occupies one of its limiting positions adjacent the inner surface of one spool flange will be moved through 180 to its other limiting position so that when the head is brought to the other spool flange the mouth of the passageway will be positionedadjacent the inner surface of this latter flange.

This construction is of particular advanta e when winding relatively short electrical coils in that the spool heads are rotated before they are given motion of translation and thus the heads will be rotated through the full 180 irrespective of the length of the coil being formed. What I claim as new and desire to secure by Letters Patent of the United States, is:

1. In a winding machine, the combination with a rotatable flanged winding spool, of means for guiding the material to be wound to said spool, operating means for eflecting traversing motion between said guiding means andsaid spool, auxiliary means for controlling said guiding means so as to deposit said material against the inner surfaces of the flanges and means providing limited independent movement of said operating means relative to said guiding means so that the traversing motion between said guiding means and sa1d spool is delayed temporarily at the end portions of said spool, whereby the end turns are wound on circumferences of the spool adjacent said flanges.

2. In a winding machine, the combinatlon In the event the spool- (iluite accurately positioned with a rotatably mounted flanged winding spool, of a distributor head for guiding the material to be wound to said spool, means supporting said head both for rotation and head providing for temporary pauses in the motion of said head at the ends of said spool independently of said 0 eratin means.

3. In a winding machine, t e com ination with a rotatably mounted winding spool, of a distributor head for guiding the material to be wound to said spool, a support for said head, means mounting said head for rotation on said support so that it can be moved from one to the other of two limiting positions, means mounting said support for reciprocation with respect to the longitudinal axis of said spool, cam operating means for reciprocating said support and for rotating said distributor head so that said head is moved to. one of said limiting positions for one direction of movement of said support and to the other limiting position for the other direction of movement of said support, and means providing for limited independent movement of said cam operating means with reference to said support so that the motion of said support is delayed temporarily at each end of its reciprocatory path of motion whereby the material is wound on'circumferences of said spool at the ends of said reciprocatory path of motion.

4. In a winding machine, the combination with a rotatably mounted flanged winding spool, of a distributor head provided with a passageway for guiding the material to be wound to said spool, a support for said distributor head mounting said head so that it may be moved from one to the other or two limiting positions, means mounting said support for reciprocation on an axis substantially parallel with the longitudinal axis of said spool, actuating means for said distributor head and its support, means operably connecting said actuating means and said support so that said support is reciprocated between limiting positions whereby said material is wound crosswise upon said spool,

one of its limiting positions for one direction of movement of said support and is moved to its other limiting position for the other direction of movement of said support, said passageway being positioned so that said distributor head by moving alternately to its two limiting positions deposits the material against the respective inner surfaces of the spool flanges.

5. In a winding machine the combination with a rotatably mounted flanged winding spool, of a distributor head-provided with a passageway through which the material is passed to said spool, a frame, means for rotatably mounting said distributor head on said frame, operating means for reciprocating said frame and said distributor head carried by it longitudinally of said spool whereby the material is wound crosswisejn layers on said spool, auxiliary operating means for rotating said distributor head to one position for one direction of its longitudinal movement and to another position for the other direction ofits longitudinal movement, said passage-way being positioned so that said distributor head by mov' ing alternately to its two positions deposits the material against the respective inner surfaces of the spool flanges and means providing for limited relative movement between said frame and its operating means so as to delay the reciprocatory motion of said frame and said head carried thereby temporarily at each, end of said spool whereby the material is wound on circumferences of said spool at the ends thereof.

6. In a winding machine, the combination with a rotatably mounted flanged winding spool, of "a distributor frame mounted for reciprocation with respect to the longitudinal axis of. said spool, a disc-like rotatable distributor head mounted on said frame on an axis perpendicular to the planeof move- .ment of said frame, said distributor head being provided with a passage-way through which the materialto be wound is passed, the mouth of said passage-way opening on the periphery of said disc-like head, operating means for reciprocating said frame so as to'wind sa'id material in layers upon said spool and means dependent u on the motion of said operating means or controlling the rotation of said head so that said material is deposited against the inner surfaces of said spool flanges.

7. The combination with a winding machine comprising'a spool on which an electrical conductor is wound insuccessive lay ers so as to form an electrical coil of means for applying layers of thread-likeinsulating' material between said successive layers and between the succeeding turns of each layer,

' said means comprisinga distributor'head,

head he intranet cam and a cam follower connected with said frame for giving said frame and said head carried by it a reciprocating motion with respect to the longitudinal axis of said spool whereby said thread is passed back and forth crosswise of said spool a plurality of times while one turn of said conductor is being wound, means for rotating said head through 180 degrees for each reversal of movement thereof, said passage-way being positioned so that the end turns of said insulating thread are deposited against the inner surfaces of said spool flanges, means providing limited relative movement between said frame and said cam follower soas to delay the reciprocatory motion of said frame and said head carried by it temporarily at each end of said spool whereby the material is wound on circumferences of the spool at the ends thereof.

8; The combination with a windin machine comprising a spool on which an e ectrical conductor is wound in successive layers so as to form an electrical coil of means for applying? layers of thread-like insulating material between said successive layers and between the succeeding turns of each layer, said means comprising a distributor frame mounted for reciprocatory motion with respect to the longitudinal axis of said spool,

a disc-like distributor head mounted for rotation upon said distributor frame, said provided with a passage-way through w ich 'thematerial'to be wound is passed to said spool, the mouth of said passage-way opening upon the periphery of said disc-like head, an actuating member of said frame mounted for reciprocatory motion ion with respect to the longitudinal axis of said wind said insulating thread crosswise of the coil a plurality of times while one turn of said conductor is being wound and motion tran 'ission means interposed between said actuat1 g member and said distributor head whereby the reciprocatory motion of said 'member 'is transmitted to rotate said head through 180- degrees for each reversal'of movement of its supporting frame so that the mouth of said passageway opens adjacent the inner surfaces of the respective spool flanges to complete the layers of said insulating material.

9. In a winding machine, the combination with a rotatable flanged winding spool, of a distributor frame mounted for reciprocatory motion with respect to the longitudinal axis'of said spool, a disc-like rotatable ,7

head mountedon said frame on an axis perendicular to the lane of movement of said rame, said distri utor head being provided with aepassageway through which the material to be wound is passed, the mouth of sand passageway opening on the periphery reciprocating said of said disc-like head, opera-ting means for frame so as to wind said material in layers upon said spool and means dependent upon the motion of said operating means for controlling the rotation of said head so that said material is deposited against the inner surfaces of said spool flanges, and a ring mounted upon said distributor head both for rotation and translation so as to prevent said head from engaging said inner surfaces.

10. A winding machine comprising in combination with a rotatably mounted flanged winding spool, a distributor head for guiding the material to be wound to said spool, a support for rotatably mounting said distributor head, said support being mounted for reciprocation on an axis substantially parallel with the longitudinal axis of said spool, said head being provided with a passageway positioned so that its mouth in one position of said head faces one of said spool heads and in another position vfaces the other of said spool heads, an actuating member mounted for reciprocation on an axis substantially parallel with the longitudinal axis of said spool between predetermined positions and operable connections between said actuating member and said support and distributor head, respectively, so that said member during the initial portion of its movement from one of its predetermined positions to its other moves sa d head from its one to its other position and thereafter operates said frame to move said distributor head longitudinally with respect to said spo0l..

ll. lln a winding machine, the combination with rotatable flanged winding spool, a distributor frame mounted for reciprocationdwith respect to the longitudinal axis of said spool, a distributor head provided with a passageway through which the material to be wound upon the spool is passed, means for rotatably mounting said distributor head upon said frame, said means providing for relative movement between said head and its supporting frame in a plane parallel with the plane of movement of said frame, an actuating member for said frame mounted for reciprocation with respect to the longitudinal axis of said spool, means for reciprocating said actuating member so as to reciprocate said frame, and motion transmission means interposed between said actuatin g member and said distributor head so that said head is moved to one position for one direction of its translatory motion and is 'moved to another position for the other direction of its translatory motion, said means comprising a member, means mechanically connecting said member with said actuating member so that said member is rotated in opposite directions by the reciprocation of said actuating member and a flexible shaft mechanically connecting said rotatable member and said distributor head whereby the latter is moved alternately to said positions by the reciprocating motion of said actuating member, the passageway in said head being positioned so that said head by moving alternatelyto its two positions deposits said material against the respective inner surfaces of said spool flanges.

12. In a winding machine, the combination with a flanged winding spool and means for rotatably mounting said spool of a distributor head for guiding the material to be wound to said spool, a support for said distributor head mounted for reciprocatory motion with respect to the axis of rotation of said spool, means mounting said distributor head for rotation on said support, said means providing for relative movement between said head and said support in a plan( parallel with the plane of movement of said support, means for giving said support reeiprocatory motion and said distributor head rotary motion with respect 'to its support so that said material is wound crosswise upon said spool, the end turns of the winding being deposited against the inner faces of the spool flanges.

13. In a winding machine, the combination with a winding spool of means for guiding the material being wound to said spool, an operating member connected with said guiding means for eflecting a traversing motion between said guiding means and said spool and means providing limited independent movement between said operating member and said guiding means so that said guiding means pauses in its traversing motion at the ends-of said spool to deposit relatively heavy amounts of said' material on circumference at each end of said spool.

JACOB J. VIENNEAU.

rotatably mounted