US2311339A

US2311339A - Method of and apparatus for winding spheres

Info

Publication number: US2311339A
Application number: US430381A
Authority: US
Inventors: Hiram N Huse
Original assignee: Individual
Current assignee: Individual
Priority date: 1942-02-11
Filing date: 1942-02-11
Publication date: 1943-02-16
Anticipated expiration: 1960-02-16

Description

H. NQ HUSE Feb. 16,Y 1943.

METHOD OF AND APPARATUS FOR WIDING SPHERES Filed Feb. ll, 1942 3 Sheets-Shave?. l

HH uuml lNvENToRl //RAM /1/. H055 ATTORNEYS Feb. 16, 1943.4 H, N HUSE 42,311,539

METHOD OF AND APPARATUS FOR WINDING SPHERES Filevd Feb. 11,' 1942 3 Sheets-Sheet 2 4 INVENTOR Ik #m4/w /V. Hase ATTORNEYS Feb. 16, 1943.. H. N. HUsE 2,3115339' METHOD OF AND APPARATUS FOR WINDING SPHERES 'I Filed Feb. 11, 154'2 5 sheets-sheet s INVENTOR Ll/PAM /I H066 ATTORNEYSl .jwinding head s. .driven about a vertical axis.. v

III designates a quill constituting the drive Patente-d Feb. 16, 1943 UNiTeo STATES PATENT OFFICE METHOD OF AND APPARATUS FOR WIND- ING SPHERES Hiram N. Huse, Providence, R. YI. Application February 11, 1942, serial No. 430,381

25 Claims.

This invention is directed to machines for winding spheres, and has for its primary object the provision of a construction whereby in the winding operation a true sphere will be produced, the coverage pattern being uniform throughout the entire sphere. The machine of this inven- 'tion is adapted to the winding of spheres of all being provided with rollers some of which arey positively driven, variable speedmechanism being provided whereby the speed of rotation of the driven rollers is varied as the sphere diameter increases. By such a construction in the winding of a sphere the speed of the driving rollers is increased in direct and constant ratio to the increase in the size of the sphere being wound. In this way I obtain a more nearly perfect sphere that has been possible with winding machines as heretofore constructed and a better and more perfect distribution of the windingA thread so that at all diameters the coverage pattern is the same.

In the accompanying drawings:

Fig. 1 is a sectional elevational view of one em- .bodiment of my invention;Y

Fig. 2 is a section on the line 2-2 of Fig. 1; Fig. 3 is a section on the line 3--3 of Fig. 1; Fig. 4 is a section on the line 4 4 of Fig. 1;

` Fig. 5 is a fragmentary elevational view of another embodiment of the invention; and

Fig. 6 is a sectional elevational view of still another embodiment of my invention.

Referring to the drawings in detail and with i respect, first of all, to Figs. 1 to 4, inclusive: 2

designates the frame of the machine, which is -providedwith lateral extensions or offsets 4 and 6 that are vertically spaced from each other. The winding heads are mounted in these two Mounted for rotation in the offset 6 is a driven As illustrated this head is in the vertical axis of the machine.

' rial.

'shaft for the drivenwinding head, and I2 designates the antifrictionbearings .for thehead. Keyed to the lower endof the drive shaft IIJ is a gear I4 constantly meshing with gearY I6 on the vertically extending shaftV I8 which carries a drive Ypulley 2'0 at its lower end constituting the main drive for V.the machine. Y

Extending upwardly within the drive shaft' III is a hollow cam-drivingshaft A22. Theflower end of this shaft 22 projectsbelow the lower face of the gear I4 and' has a Vgear 24 keyed thereto, this gear meshing with gear 26 also on the shaft I8.V The gears I4'and 24 while on the same cen- 'ters' are unequal gears, the gear I4 having a higher peripheral speed `than the gear 24.

Carried byor'forined on the inside of the gear 24 is a yoke 28,best illustrated in Fig. 4',V and providing supports and bearings for three gimbals 30. Each of these gimbals-provides a bearing for friction drive rollers 32 which may be made of rawhide, ber or other suitable mate-v Each gimbai aurvisj providedwith a rigid arm I or lever 34, the outer Vend of each of these levers being pivoted to alink 36, the lower' ends of which links are secured to a collar- 3'8` mounted on ball bearings 40 for rotation aboutastub shaft 42 mounted vertically in the lower-'part of the machine frame'. The stubV shaft 42 Vis invertical alignment with the quill shafts I0 and 22 and Extending vupwardly within the vquill shaft 22 -is a roller-assembly drive shaft 44 and keyed to the lower end of this shaft. is a cup-'shaped fric'- tion disc 46. The friction drive rollers 32, above referred to, engage the upper face of this'disc to :drive the same andv thereby impart rotation to the roller drive shaft 44.v

The friction driving rollers 32, as above pointed out, are mounted in the gimbals 30-and if the collar 38carried byj-the shaft-42 befmoved upwardly it willbe quite'apparent that the rollers will be'tipped or pivoted` from the full line position shown in Fig. 1, for instance, to the dotted line position'in the same figure andwhich I will designate 32. vlBy the'vs'amev token if the collar 38 be moved downwardly with respect to the stub shaft 22 the rollers will -be tipped the; other way as indicated atv 32".`

This pivoting or adjusting of the rollers 32 will of course vary the Ispeed of rotation lof thefriction disc 46 and in turn vary the speed of rotation or the shaft 44.

The gear 24 is cut through-to accommodate Y these rollers, as seen in Fig. 1, for instance, so as to allow the rollers to contact the underface of the gear I4. It will be understood of course that the friction between the gear I4, the rollers 32 and the driving disc 46 will rotate the driving disc. Consequently, the rollers 32 being adjustable the speed of rotation of the disc 46 may be varied without varying the speed of the gear I4. Reverting to the winding head 8: The upper end of the roller drive shaft 44, above referred to, carries a gear 48 meshing with gears 50 and 52 mounted on vertically extending stub shafts 54 and 56, respectively, so that rotation of the roller drive shaft 44 will drive the gears 48, 50 and 52.

On the upper end of each of the vertically extending stub shafts `54 and `56 is a bevel gear 14, each meshing with a bevel gear 'I6 which is on the shaft 'I8 of each of the spherical driving rollers 80. These shafts 18 are inclined to the axis of the stub shafts. I have shown this inclination as a v angle but it is to be understood this is illustrative only. The drivingrollers 80 engage directly the sphere being wound and being positively driven will rotate the sphere.

In the upper end of the roller drive shaft 44 K is -a pin or stub shaft 58 carrying a wide faced gear 60 meshing with a gearsegrnent 62 carried by a pivoted cam lever 64, this lever being pivoted on cam lever sha-ft 6B, the wide faced gear 60 meshing also with gear 'I9 on the mount 8| foril moved bodily about an axis parallel tothe axis, `of rotation of the head 8 first in one direction and then in the opposite direction to vary the angle of movement otherwise limparted to a sphere being wound by rotation of head 8 and rotation of the rollers 80 on their individual axes.

In the drawings the machine stands vertically,

and the winding head above described is the lower head of the machine.

With respectpto the cooperating upper head: It will be seen from Fig. l that this head comprises a single vroller 84. This is an idler roller ball bearing mounted on the lower end of a vertically extending shaft 86 `which is rotatable in bearings 88. The center line of the shaft 86 passes through the center of the roller.

The shaft 86 and the roller 84 carried thereby are vertically adjustable in accordance with increase in the sphere diameter through automatic adjusting mechanism which will be described later on. At the upper end ofthe vertically adjustable supportingv structure for the shaft 86 I provide a Weight 80. This weight is for-the purpose of maintaining the driving rollers 6 6 and 82 of the lower winding head and the idler or backing roller 84 of the upperhead in contact with the .sphere throughout the winding operation.v

Mounted on the shaft 86 and freely rotatable thereon is a gear 82 driven by gear 84 carried on the upper end of the shaft I8, which as iabove pointed out is the drive shaft for both the lower and upper heads. The

gears

82 and 94 are the same size as and on thesame centers as the gears I4 and I6. The shaft |8 also carries a gear 96 at its extreme upper end which is-in alignment with and is the same sizeas gear4 26 and meshes with a toothed cam 98 mounted for free rotation on the shaft 86. This cam is the same diameter as the gear 24. Keyed to the sha-ft 86 intermediate the cam 98 and the gear 92 is a gear segment |00. A rack gear |02 meshes with the gear segment |00. This rack is pivoted as shown at |04 on the gear 92 and is equipped with cam follower |06 which follows the cam 98.

The shaft 86 makes the salme number 0f revolutions per minute as the lower Winding head 8, and the cam mechanism just described is -provided to keep the axis of the idler roller 84 in constant parallelism with the axes of rollers 80 `on the lower Winding head and has the same relation to idler roller 84 as the cam 'I2 has to the rollers 80. It will be apparent from the foregoing that so far as the roller 84 and the rollers 80 are concerned, the former is `an idler while the latter are drivers.

As was pointed out at the outset of this description one of the objects of this invention is to -provide variable speed mechanism whereby the speed of the driving rollers on their individual axes will increase in direct and constant ratio to the increase in the size of the sphere being Wound. In this saine connection: The bearing 88 -for the shaft 86 of the upper winding head is carried in a vertically movable sleeve |08 which is extended 4upwardly to .provide a mount or support for the weight 90 already referred to. This extension of the sleeve is equipped with a pin ||0 engaging a fork in the bfurcated end of a lever ||2 which is pivoted on the frame 2 of the machine, as shown at ||4. Rigid with the lever ||2 is a lever ||6. At the lower end of the machine the mount for the collar 38 is provided with a pin ||8 cooperating with a pivoted lever |20. The lever |20 is rigid with lever |22 in turn connected to link |24 which is ladjustablyv connected to the lever arm I0 as shown at |26. Not only is the end of the link |24 adjustable in the lever ||6 but the link |24 may be shortened or lengthened by reason of the provision of the turn- V buckle |30.

While the shaft 86 moves upwardly as just described due to the increase in the sphere diameter, and while the speed of the roller-assembly vdrive shaft 44 is varied at the same time, the

idler roller 84 only rotates by Yreason of its engagement with the sphere being wound. The speed of the driving rollers 80, however, is positively varied due to the fact that they are driven by the shaft 44 whose speed is varied as above explained because of the constantly increasing sphere diameter.

The winding thread Ywhich is to constitute the sphere being wound is designated |32 and it will be understood that in practice this thread is startedon a center of some kind which may be' merely a knot in the end of the thread or it may be any oneV ofthe variousl types of centers that are employed; for example, in winding golf balls.

For the purposes of description I will assume that |34 represents the beginning or start of the winding of the sphere. I have assumed this condition because in the drawings I have shown the heads in contact with the surface of |34.

For the purposes of this description, therefore,

i the friction rollers 32 are in the full line posivgear ratio between the gears IS and |4 and be tween the gears 26 Yand 24. `Likewise the cam 98 and the gear 92 of the upper winding head are rotating clockwise so that throughthe gear segment and rack gear |02 the shaft 85 will be driven in a clockwise direction also.

Rotation of the shaft 44 will impart movement in an anti-clockwise direction to the shafts 54 and 56 carrying the bevel gears 74, this motion being transmitted to the bevel gears'lt` to rotate these gears in a clockwise direction so that each spherical driving roller 85 is rotated in a clockwise direction, asviewed in Fig. 1, on its own axis. Inasmuch as the spherical driving roller 84 is at this instant being rotated in the proper direction due to the rotation of the upper driving shaft 86 the center |34 will be rotated about an axis which is parallel to the axes of rotation of the

rollers

80 and 84.

It will be seen therefore that the thread |32 will be applied to |34 along various great circles of the same.

In addition to the movement of the driving rollers above described the mount 8| therefor is rotated about a vertical axis through the gear segment E2 and cam i2, so as to vary the angle of movement otherwise imparted to the sphere being wound. This will give a fair sphere but better results are obtained through the variable speed mechanism above described. As the sphere |34 increases in diameter the shaft 86 moves upwardly, which rocks the friction rollers V32 on a horizontal 'axis so that the upperpart of these friction rollers will be shiftedl toward the periphery of the gear I4 and the lowerpart toward the center of cup-shaped friction disc 4G. For example, we might assume that the shift is from the full line position shown in Fig. 1 to the dotted line position designated 32". The cup-shaped friction disc 46, it will be remembered, is-keyed directly to the shaft 44; consequently the disc 46 will, under these conditions, be speeded up to increase the speed of the shaft 44 and hence in the last analysis increase the speed of the driving rollers 8|?. In other words, the peripheral speed of thesphere being wound increases in direct proportion to the increase in the spheres diameter so that a theoretically perfect sphere is produced.

In further explanation of the desirability of fthe sphere diameter the wrap spacing will be varied accordingly and in definite ratio to this varying diameter, so that the coverage pattern is the same at all sphere diameters.

VIn the embodiment of the invention as il1ustrated in Fig. 5, the two winding heads 8' Yare identical with the head 8 of Fig. l. It will be understood that in this form of my invention the variable speed mechanism of Fig. 1 vwill be employed, the connection of this mechanism to both heads being a duplicate of the connection to the head 8 of Fig. 1.

Here again it will be appreciated that the speed of the driving rollers, which in this instance will be in both heads, is increased in directl proportion to the increase in the diameter of the sphere being wound.

While the construction so far described in detail produces excellent results so far as the production of a true sphere is concerned in comparison Awith prior machines, I find that even better results are obtained if a valuable drive be provided for the cam 'E2 which rotates the mount 8| for the driving rollers 85 about an axis parallel to the main axis of the machine. For this purpose I provide the construction illustlated in Fig. 6.

From an inspection of this figure of the drawings it will be seen that the same comprises much of the same'mechanism as illustrated in Fig. 1 and corresponding parts in Fig. 6 have been given the same reference characters as employed in Fig. 1 so that a description of the entire machine of Fig. 6 will be unnecessary. In other words, in the construction illustrated in Fig. 6 I have retained they feature of varying the speed of the shaft 44 and hence the speed of rotation of rollers B on their own axes in accordance with the increase in diameter of the sphere being wound.

In this embodiment of my invention I go further in that I vary the speed of rotation of the cam 12, that is to say, the speed of rotation of the shaft 22 in accordance with the variation in the diameter of the sphere being wound.

Referring specifically to Fig. 6: I8 designates the drive shaft and |5il an intermediate shaft. On the lower end of this intermediate shaft and rigid with it is the gear 26 which, as before,

varying the speed of the driving rollers 8l) as the sphere being wound increases in diameter: Let it be assumed for the moment that the speed of the rollers 8|! is constant. Under such conditions the rollers 8|) would space off a given dimension, say one-quarter inch between wraps.

YThe spacing would be the same regardless of sphere size. On a small sphere the quarter-inch wraps would be spaced once around the sphere. This would be the case only at one size of sphere, it being very apparent that, if the speed of the rollers 8) is not varied, a point would be reached as the sphere diameter increases where the same number of wraps would be insufficient to cover the sphere periphery, or expressing it another way would not go as far around the sphere. It is very evident that it becomes desirable to space the threads further apart with increase in the diameter of the sphere being wound or, in other words, there should be a definite ratio v between the wrap spacing and the sphere diameter. It will be very apparent, in the light of the above explanation, that in my improved construction by ,increasing the speed of the rollers in direct proportion to the increase in which is rigid with the drive shaft I8.

meshes with the gear 24. The gear I6 which, as before, meshes with |4 is loosely mounted on shaft I 50. The gear I5 also meshes with a gear |52 On the upper end of the drive shaft I8 I provide gears n I 54 and |56 each of which is rigid with this shaft.

The gear |54 meshes with the gear 94 which as in Fig. 1 is in mesh with the gear 92. The gear 94, however, is now mounted on shaft |50 on which it is freely rotatable. The gear |56` meshes with a gear |58 freely rotatable on shaft |50. The gear 96 which, as in the case of Fig. 1, meshes with the gear S8 is xedly mounted on theA shaft |56. Inasmucli as the gear 96 is fixed to the shaft |50 while the gear 94 is rotatable with respect to the shaft |50, and inasmuch as the gear I6 is free on |50 but in mesh with the gear |52 fast on the drive shaft I 8, while the gear 26 is fast on theshaft |55, it will be quite apparent that this embodiment ofmy invention provides for variations in the drive for the sphere |34 being Wound just asin the embodiment of the inventionv as illustrated in Fig. 1.

In Fig. 6, however, the shaft |50 is provided with a vertically slidable collar |60, the pin ,|62

The disc 12 as well as the gear 26 which drives the gear 24 being keyed to the shaft |50 and the gear 24 being keyed to the shaft 22 which drives the cam 12, it will be quite apparent that if the speed of the disc |12 be varied to vary the speed of the shaft |50 the speed of rotation kof the cam 12 likewise will be varied.

Through the connection of the rollers |10 to the lever it will be obvious that as the sphere |34 being wound increases in size, the collar |60 will be moved downwardly of the shaft |50 to tip the rollers |10, from the full line position shown, toward the center of the disc |12 to increase the speed thereof. This increase in speed of |12 will be imparted to the cam 12 so that we' therefore have an arrangement whereby the speed of the cam 12 is varied in accordance with the increase in the diameter of the sphere |34 being wound. Inasmuch as the gear 96 which is geared to the cam S8 is fast on the variable speed Vshaft |50, it

will be apparent that the speed of the cam 98 is varied in the same manner as that of the cam 12 in accordance with the increase in the diameter of the sphere |34 being wound.

In this embodiment of my invention, therefore, it will be appreciated that not only do I vary the speed of rotation of the driving rollers for the sphere being wound, as the sphere increases in diameter, but I also vary the movement imparted to the rollers by the cams 12 and -08 in accordance with the increase in diameter of the sphere being wound, softhat in the nished sphere I have a theoretically perfect sphere in which the wound pattern is uniform at all sphere diameters.

It is to beunderstoodthat changes may be Vmade in -thefdetails-of construction and arrangement of par-ts hereinabove shown and described within the purview of my invention.

What I claim is:

1. In the winding of spherical bodies, the method which comprises effecting rotation of the sphere on its own axis during the winding operation, the speed of rotation of the sphere gradually increasing as the diameter of the sphere increases.

2. In `the winding of spherical bodies, the method which comprises effecting rotation of the 'sphere on its own axis as the same is being wound, Lthespeed Aof rotation vof the sphere being increased in iixed ratio to the gradually increasing diameter of Vthe sphere.

3. In a machine for winding spherical bodies, the combination of opposed winding heads, one of which is equipped with a rotatable driving member engaging the sphere being wound to present diii'erentV parts of the surface of the sphere to the point of winding, and means 'for varying the speed of said 'driving member in fixed rat-ioto the constantly increasing diameter Vof 'the sphere.

4. Ina machine for winding spherical bodies,

.riminese the combination of opposed winding heads, one of which is equipped with a spherical driving member for constantly engaging the surface of the 'sphere 'being wound Vto present different parts of the surface of the sphere to the point of winding, and means for driving said spherical driving member at a speed which increases in iixed ratio to the constantly increasing diameter of the sphere.

5. In a machine for winding spherical bodies, the combination of opposed rotatable winding heads, one of which is equipped with a rotatable driving member constantly engaging the sphere being wound to rotate the same thereby to present different parts of the surface of the sphere to the point of winding, and a drive for said driving member controlled by the sphere being wound and operable to accelerate the driving member in fixed ratio to the constantly increasing sphere diameter. i

6. In a machine for winding spherical bodies, the combination of opposed winding heads, one of which iis equipped with a rotatable driving member constantly engaging the sphere being wound to 'rotate the same and thereby present diffrent `parts of the surface of the sphere to the point of winding, one of said heads receding from the other as the sphere diameter increases, and control mechanism operated by said head movement to vary the speed of rotation of the rotatable driving member in `fixed ratio to the sphere diameter.

7. In 'a machine lfor winding spherical bodies, the combination of opposed winding heads, one of which is equipped with a rotatable driving member in 'constant vengagement with the sphere being wound to rotate the same, a drive for said rotatable driving member, one of said heads being moved away from the other by the sphere as the diameter of the latter increases, `and a control Vfor said drive actuated by the said recession of the winding head to effect an increase in the -speed ofthe said rotatable driving member as the sphere diameter increases.

v8. In a machine for winding spherical bodies, the combination of opposed rotatable winding heads, rotary sphere gripping means carried by "said heads, and a variable speed drlive for rotating the gripping means of one Vhead about an axis which is -angularly -disposed with respect to the axes of rotation of the heads, said drive varying the speed of rotation of the gripping means in Afixed ratio -to the increasing chameter of the sphere being wound.

9. In a machine for `winding spherical bodies, the combination of opposed winding heads, an idler roller carried -by one head, a driven roller carried by lthe other head, the sphere being wound being gripped between said rollers, driviing means for rotating one of vsaid heads, driving Ameans for rotating said driven roller about an axis angularly disposed with respect to the axis vwo'f rotation `of the rotatable head, a shaft on Vwhich the idler roller` is mounted and driven oi the lirst mentioned driving means whereby the axis of rotation of lthe idler roller will be maintained in parallelism with the axis of rotation of the driven roller throughout the windi-ng operation.

l0. VIn a machine Vfor winding spherical bodies,`

' head, said'drive Vcomprising a drive shaft, a

'disc 'carried thereby, and rollers engaging said disc to drive the same, and a connection between the rollers and the sphere `being wound whereby as the sphere increases in diameter it will shift the rollers radially of said disc to vary the speed oi the same in direct ratio to the increase in thesphere diameter.

11. In a machine for'winding sphericalbodies, the combination of opposed winding heads, sphere gripping rollers carried thereby, means for rotating one of said heads whereby the sphere being wound is constantly rotated on a single axis, an intermittent drive for the rollers of the rotating head for intermittently rotating the sphere about an axis angularly disposed with respect to said first mentioned axis, said intermittent drive being controlled by the sphere being wound so that its speed is increased as the sphere diameter is increased, whereby the coverage pattern will be the same at all sphere diameters from minimum to maximum.

12. In a machine for winding spherical bodies, the combination of opposed winding heads, sphere gripping rollers carried thereby, means for rotating one of said heads whereby the sphere being wound is constantly rotated about a single axis, an intermittent drive for the rollers of one head for intermittently rotating the rollers about an axis which is at an angle to the rst mentioned axis, a drive for the other head whereby the roller of that head may always rotate about an axis parallel to the said angularly disposed axes of the rollers of the first head, and a driving connection between the sphere being wound and the intermittent roller drive whereby the speed of the intermittent drive will be increased automatically in fixed ratio to the increasing diameter of the sphere, so that the coverage pattern on thespheres surface will be the same throughout the sphere from minimum to maximum diameters.

13. In a machine for winding spherical bodies, the combination of opposed winding heads equipped with sphere gripping rollers for gripping the sphere being wound, one of said heads being bodily movable so as to be forced away from the other by the sphere as the diameter of the latter increases, a drive for rotating one of said heads thereby to rotate the sphere being wound about the same axis, a drive for intermittently rotating the sphere about another axis, and a connection between the said bodily movable head and the last mentioned drive for Varying said drive to increase the intermittent rotation of the sphere being wound in fixed ratio to the gradually increasing sphere diameter.

14. In a machine for winding spherical bodies,

the combination of opposed winding heads, rollers carried by said heads for engaging a sphere being wound, a variable drive for rotating the rollers of one head about their own axes at a speed dependent upon the diameter of the ksphere being wound, a mount for said driven 16. In a machineV for winding spherical bodies, the combination of' opposed winding heads, ro1l, ers carried thereby for engaging a sphere being wound, means for rotating one of said heads, means for rotating the rollers of said last mentioned head about axes angularly disposed with respect to the axis of rotation of the head, a mount for said rotatable rollers, and a drive therefor for rotating said mount about an axis parallel to the axis of rotation of the head, said drive being varied in accordance with the constantly increasing diameter of the. sphere being wound. v v

17. In a machine for winding spherical bodies, opposedfwinding heads, sphere engaging rollers carried thereby, a mount for the rollers vof one head, a drive for rotating the mount independently of rotation of the-rollers, said driverincluding a rotatable cam, and a connection between the last mentionedhead and said drive `to vary the latter, thereby to vary the speed of said cam in accordancewith variations in the diameter of the. sphere being wound.

18. In a machine for winding spherical bodies, opposed winding heads, one of which recedes from the other as the sphere being wound increases in diameter, sphere engaging rollers carried by said heads, a mount for the rollers oi one head, a drive including a cam for rotating said mount intermittently about an axis parallel to but offset with respect to ythe axis of the lastmentioned head, anda connection between the lastl mentioned head and said drive to vary the latter, thereby to vary the speed `of said cam as the sphere being wound increases in diameter.

19. In a machine for winding spherical bodies, the combination of a pair of opposed winding heads, sphere driving rollers carried by said heads, said rollers rotating on individual axes which are parallel to each other but at an angle to the axes of said heads, a mount for the rollers of one head, a drive therefor for rotating the mount intermittently about an axis parallel to the axis of said head, said drive including a cam, and means actuated by the recession of one head with respect to the other due to the gradually increasing diameter of the sphere being wound for varying said drive therefor to vary the speed of said cam, to eiTect a variation in the rotation of said mount in direct ratio to the increase in the sphere diameter.

20. In a machine for winding spherical bodies, the combination of opposed winding heads, sphere engaging rollers carried by said heads, said rollers being rotatable about axes which are at an angle to the axes of said heads, a positive drive for the rollers of one head to rotate said rollers about their own axes, said drive including a drive shaft, a driving disc iixed to said shaft, friction rollers engaging one face of said disc to rotate the same, and means for shifting said rollers on said disc radially thereof to vary the disc speed and hence the speed of said drive shaft.

21. In a machine for winding spherical bodies, the .combination of opposed winding heads, sphere engaging rollers carried by said heads, said rollers being rotatable about axes which are at an angle to the axes of said heads, a positive drive for the rollers of one head to rotate said,-

rollers about their own axes, said drive including 4a drive shaft, a driving disc xed to said shaft, friction rollers engaging one face of said disc to rotate the same, and means actuated by the sphere being wound to shift said rollers on said disc radially thereof, thereby to vary thedisc speed and hence the speed of the positively driven rollersL 22. In a machine for winding spherical bodies, thev combination of opposed winding heads, sphere, engaging rolflers. carried by said heads, said rollers. beingl rotatable about axes which are at an angle tothe axes of said heads, a positive drive for the rollers of one. head to rotate said rollers about their own axes, said. drive including a drive shaft, a driving disc fixed to said shaft, friction rollers engaging one face of said disc to rotate the same, and toggle mechanism actuated by the recession of one headV with respect to the other as the sphere; being wound increases in diameter to shift said rollers on said disc. radiallyv thereof thereby to vary the disc speed and hence the speed of the positively driven rollers.

23; In a, machine for winding spherical bodies, the combination of opposed winding heads adapted to receive betweenv them a sphere being wound, sphere engagingjrollers carried by said heads, said heads being so mounted that one head will recede from the other as the sphere diameter increases, a drive for the rollers of one head to rotate said rollers on their respective axes, a drive shaft constitutingpart of said drive, a dise carried by said drive shaft, friction rollers engaging saidl disc to rotate the-same, and toggle mechanism connected to said rollers and to one of said heads whereby as the last mentioned head recedes from the other head, due to the increasing sphere diameter, said rollers will be shifted radially of said disc thereby to varyy its speed and hence the speed of the driven rollers. 2li. In a machine for Winding spherical bodies, the combination of opposed Winding heads, sphere engaging rollers carried by said heads, said heads being in axial alignment, the axes of said rollers being parallel to each other and at an angle to the axes of said heads, a mount for the, rollersof each head, means for rotating said mounts intermittently about an axis parallel -to the axes of said' heads,v whereby the axes of the rollers of both heads are maintained in parallelism, and controlling mechanism for said means governed by the sphere being wound whereby the rotation of said mounts will be varied as the sphere diameter increases.

25.. In a machine for Winding spherical bodies, the combination of opposed winding heads, sphere engaging rollers carried bysaid heads, the axes of said rollers being parallel to each other but at an ang-le. to the axes of the winding heads, a mount for the rollers of each head, a drive for rotating the rollers of both heads intermittently about axes parallel to the axes of the heads, said drive including a cam carried by each head, and a connection between the heads and said drive to vary the latter thereby simultaneously to vary the speed of said cams to the same extent and in accordance with the increasing diameter of the sphere being wound, so that while the intermittent rotation of the rollers is varied-.theatres of said rollers will remain in parallelism.

' HIRAM N. HUSE.