US2119445A - Winding machine - Google Patents

Description

May 31, 1938. G. w. SCOTT 2,139,445

WINDING MACHINE Filed Dec. 13, 1934 8 Sheeis-Sheet 3 I Hg- 5 I'NVENTOR L &W

May 31, 1938. w 5w" 2,119,445

. W'INDING MACHINE Filed Dec; 13. 192w a Sheets-Sheet 4 y I G. w. SCOTT 2,119,445

WINDING MACHINE Filed Dec. 15, 1954 s Sheets-Sheet 5 (Ar/W W W m ORNEY' May 31, 1938. a G. w. scoTT 2,119,445

. WINDING MACHINE I Filed Dec. 13, 1934 8 Sheets-Sheet 6 INVENTOR m? 2 2? \ULJZGORNEY I May 31, 1938; v 3, w sco -r 2,119,445

wmnmg MACHINE Filed Dec. 13, 1934 8 Sheets-Sheet '7 |NVENTOR I BY L. v

I May 31, 1938. G. w. sc'rT wmbms MACHINE Filed Dec. 15; 1954 8 Sheets-Sheet 8 hnh.

RNEY

Patentd May 31, 1938 UNITED STATES "PATENT OFFICE WINDING MACHINE George W. Scott, Providence, 3. 1., assignmto a Tobe Deutsclnnann Corporation, Canton, Masa, a corporation of Delaware 7 v Application December 13, 1934,'Serial No. 757,350

- 1s qlaims. (01. 242-56) there is usually rolled together a. numberof layers of paper and a number of layers of tin or aluminum foil in such a manner that the tin or aluminum 1011 forms opposite electrodes of an electrical condenser. In the ordinary condenser winding there may be first a layer of aluminum foil, next a layer of paper, third another layer of aluminum .foil, and on top of this a layer 01' paper. If it is desired a winding can be made with three layers of aluminum separated by three layers of paper. A number-of various types of windings of this nature may be made and with the machine of the present invention, these windings may be made as desired, either large or small, and of the desired electrical capacity and other electrical characteristics.

1 The present invention is particularly designed to overcome the handicap imposed. by the flimsi ness of the material used. ,As is well known the paper and foil used in the manufacture of electrical condensers are very fine, and not only do they tear easily if the tension on the sheets is varied, but also it should be noted that because of its delicate nature, it cannot-be pushed but must always be drawn. This oflers considerable difliculty in'designing machinery to handle such material, particularly for the prment purpose, since a number of operations must be performed mandrel.

In amachine of may be six sheets of foil and paper that go to form the winding, it is necessary to flt-jindividually each one of these six sheets to the point where the mandrel will grasp them and begin to wrap them on a-winding element. In addition, after the winding is made, each sheet must be cut at relatively different places so that the connecting foils will not have an opportunity of making electrical contact with'each other and thereby create a short circuit between the diflferent layers.

After thep per and foil are cut, which is in itself invention.

the present type where there a' dimcult task because of their thinness the winding or roll must be sealed and lastly it must be ejected from the spindle or mandrel. It

should also be noted that in order to provide a fully automatic device, the exact number of. tur 5 must be wound and following this, after the winding is ejected, the mandrel must come to rest always in relatively the same position to be able to receive the foil'and paper.

In the present invention condenser windings-1o may be made in relatively large or small sizes. The paper and foil is automatically fed fromthe individual rolls at the top of the machine. A split mandrel automatically opens and closes to grasp the paperand foil. The foil is rolled with 15 the proper number 01' turns, the roll is then sealed and finally ejected, whereupon the mandrel returns in position to receive the paper and foil for the making of a new roll. The exact manner in which the mechanism operates, the go results obtained, and utility and advantages of the invention, will be better understood from the description given below taken in connection with the drawings showing v an embodiment of the Figure 1 shows .a plan view of the invention as viewed from the top. a

Figure 2 shows the vertical elevation seen from the jiront. I

Figured shows a side elevation.

Figure 4 shows a fragmentary view in perspec-f tive showing in detail the method of feeding the foil and paper, the split mandrel, and the manner in whichthe toil and paper is received on the a mandrel. v

Figure 5 shows 9; fragmentary viewin perspective showing in part the cutting mechanismfor severing the toil and-paper and the cam element forcontrolling the same. P

Figure 6 shows'inperspective a detail of a part on the material besides merely rolling it on a shown in Figure indicating how the paper and foil are released and fed in the operation of the mechanism. Figure '1 shows, in perspective, a front view of the machine indicating the various cams and controls of the mechanism.

Figure 8 shows a section taken on the line 8-8' of Figure 1. Figure 9 is a rear view of the invention looking from the upper part of the device as shown in Figure 1. H Figures 10, 11 and 12 show the details of the spring shuttlefor ping and feeding the foil and paper. a

Figures and 16 show the mandrel as still in an open position.

5 Figures 17 and 18 show the mandrel in position for ejecting the winding.

' Figure 19 shows a detailof the clutch mechariism for rotating and releasing the shaft on which the mandrel is mounted.

Figure 20' shows' a detail of the method of a supporting the shuttles indicatedin Figure 4,

and Figure 21, shows a further detail of the same thing. 1

, In Figures 1, 2 and.3 there is shown a base 15 element I, upon which is-rnounted a central casting or'frame 2 and a motor .0. The motor I is made fast to the frame I by bolts 4 or in any other suitable manner. At the extremities of frame l,'-there isla second frame which car- 2o ries a rigid element 0 upon which the rolls 1 of tin foil and paper are mounted. 0n the frame 2 on which most of the mechanism is mounted, are three upwardly extending brackets a ie sss driven from the sprocket" gear It. This shaft attached to-it, a ring gear 44, whose function will be explained later, and a cone clutch 45 which operates the clutching element 46 to which the shaft I1 is held fast. In the opera tion of the shaft i4, theraised element 43 on the face of the cam 28 forces the lower end of the lever 38 to the left as viewed in Figure 'I *when the part 33 of the cam 2| comes beneath and fits in-a groove 4'. in the clutch element 46.

As the. finger or roller 34 as shown in Figure 8 I is moved to the right,' conipel1ing the clutch ele- H, 'II, and, through which run the shaft i4.

The shaft I4 is driven indirectly by the motor,

3 by means of the sprocket wheel II. The sprocket wheel drives the sprocket chain it which in turn drives the large sprocket wheel ll carried bythe shaft "to which a gear train is connected. In this system the gear is on the shaft il drives the gear 10 through the idler gear 20.

A On the shaft with the gear it is a small gear 2i which drives a l r gear 22 which in turn drives through a further reduction system gear 23 and 35 gear 24r The whole gear system including the gears ll, I9, 20,- 2I, 22,13 and being a reduction system to obtain for thecontrol shaft l4, driven by the gear 24. The gear system is such that certain gears, principally, thegeaijs 40 I9 and-20 may be interchanged with gearsof j -other sizes to vary the operation of the mechanism. This makes it possible within a certain limited range to choose the :number of turns that the windings are to have. If the control 4.5 shaft i4 is made to rotate faster as is the case in providing a lower-gear reduction ratio, then the complete operation of the mechanisingwill take place in relatively fewer turns of the spindle l1 and therefore acondenser of a fewer number 50 of turns will be-made. The gearing isshown more in detail in Figure 9; than in Figures 1 and 3. The shaft ashas been stated maybe called the control shaft. This shaft carries two large ment 46 to move to the left, a projecting bar Bil,

carried at the end I! of the fork element, comes in contact with a roller 5| mounted on the lever and"; This lever arm 52 is pivoted in a H forked bracket 53 mounted by machine bolts I4 to a part of the frame 85 formedas an extension of the upright bracket 0. The lever arm 52 is pivoted tothe forked bracket at 56 and carries at the other end an adjustable stud '51 which is adapted to come in contact with the projecting stud or screw 58 attached to a co1lar I! mounted on and made fast to the shaft l|'.-' Normally a-spring ill between the collar 58 and the collar 6| formed at the outside of the groove 4| of the clutch element forces the clutch element 46 into engagement with the cone projecting into it. hi this position the shaft i1 and the shaft II are rotated together. As the lever It through the operation ofthe ,cam 28 causes the clutch element 46 to leave the surface of the cone 45, the end projecting piece forces the roller ll of the lever 52 outward causing the adjustable with weakened force, partly due to the inertia of the system and, partly due to the eifect of the drag spring 41 furnishing some power to the shaft H which continues tomove until the projectingstud N on the collar It comes up against 1 camsllandflaswellas'asmallercamilas 68 indicated in1 lgure'3. Ibis shaft alsoarriu a cam 2. and external of the support, ll, cams 20, 3., ii and 82. The cam 2! is shown in perspective inFigure'iandin sectionlnFigureB. Thiscam is' madewith a flat surfaceiexcept for a raised i portion is upon which the angel-arises. This finger which is adjustable as indicated by the nut ii, is carried by a lever arm ll pivoted by the pln'll in a bridge 3! extendingacross'from .by'the arrow A. Above the cam 21 there rides the adjustable pin I'I, whereupon the shaft l1" comes abruptly to rest. Inthis position as will be shown later, the mandrel 43 is'opened so that, it is ready to receive the sheets of paper and foil preparatory to the nextoperation. The shaft l4 as has been stated above also carries thecams 2|, 2 and 21. The cam'fl is shown in Figures 3, 4, 7 and Figures 13 to 18, inclusive; The cam 2'! is formed with one large projection 62 as in-'- dicated in Figures 13, to 18.- This cam is normally rotated in a clockwise position as shown the pin '03 which is at one end of a bell-crank lever i4 mounted on a bracket 65 which is integral with the front bearing vI i of the sllDD rt extends into a groove; 4| of a clutch element 42-.

"Inc-purpose of" the clutch element 4l is to disro engage'the drive shaft 11 at one at'the' opposite and carrying the spindle or mandrel,4 l.' This mechanism is shown more clearly in Figures 1a and,19. n Figure 19 it will be seen that the mandrel shaft comprises two 'parts ,spring wire II placed 1 5 I1 and "f, the shaft II being the drive shaft,

ing bracket II. The lever 54 is pivoted by'means of the shaft about which is wound a fl'lainst-the frame II in such a manner to hold theupper end "of the lever to the right as shown in 13.-The

spring 81 in this position holds the pin against caries the mandrel 43. as

cam 21. The shaft H! as hasbeen stated dicated in Figures 13, 15, 16 and 17, comprises a fixed jaw'89 and a pivoted jaw I8. The pivoted jaw I8 is pinned to the back end of the fixture 89 by the pin II. At the back end of the jaw'18 there is a curved portion I2 which projects upwards from the edge of the fixture as shown clearly'in Fig. 1'7. The arm 88 of the lever 84 is formed at the end in two branches I3 and V I4, which are themselves forked as indicated clearly in Figures 13, 15 and 171 The pin I5 extends into this forked element I3 and I4 and car ries a collar I8'which fits over the mandrel 43. When therefore the collar I8 is forced over to the right as indicated in Figure 15, the end |2 of the moveable half of the mandrel is forced downward and the movable jaw I8 of the mandrel opens upward in the position shown in Figure 15. When therefore the spring 81 forces the lever arm 88 to swing clockwise as viewed in the position in Figure 15, the mandrel opens to receive the paper and aluminum foil. When, however, the portion 82 of the cam 21 comes beneath the pin 83, the arm 88 swings counterclockwise as viewed from the position shown in Figure 13, and not only does the mandrel close and remain closed, but also the collar moves over the mandrel and in this motion ejects the winding that may be on it. The extreme position indicating this operation is shown inFlgures 1'7 and 18. The two other mentioned cams of the system comprise the cams 25 and 28. The cam 28 controls the mechanism for releasing the tension upon the foiland paper when the shuttle element, about to be explained, is raised, and applying it for drawing the shuttle element downward as viewed from the position shown in Figure 4. The cam 25 controls the cutting of the paper and foil at the proper time as will also be explained shortly. The cam 28 is substantially circular in shape 40' except for a small indentation II. The roller I8 carried by the arm I9 which forms a part of the and are pivoted as indicated in Figures 5 and 6 hub 88 pivoted concentric with the spindle shaft II, but not attached to it, controls the movement of the arm -8I which is also formed as a rigid ele.- ment extending from'the hub 88. The arm 8I carries at its end 82 a rigid rod 83 on which are mounted .a number of collars 84 fixed by set screws 85 in desired positions. The rigid rod 83 also passes through the center of the collars 88. These collars 88 are at the ends of the levers 81 to the shaft 88 mounted in abearing bracket 89 attached rigidly to the frame or the base 98. The

end of which is provided with a pin 92 which extends to the arm 8L and which carries-the rubber roller 93. As indicated in Figure 5, the bracket 89 is formed with .a base 94 and a parallel bracket element. 95. Between the element 95 and the lower part of 89 there is pivoted a second roller 98 which may butt against the roller 93 -because of the pressure of the spring 91. This spring is fastened to the fixed shaft 89 and presses against 7 a piece 98 set between the arm 81 .and the arm '9I, thus forcing the roller 93 against the roller I 98. When the arm, as shown in the position of Figure 5 is moved counter clockwise, the collars time the rollers 93 and 98', which may be of rubher or any other suitable friction material, come in contact with one another and are rotated by shaft 88 carries at its free end an arm9 l the lower This occurs normally at all times. except means of the spur gears 99 carried at the ends of the rollers 98. These gears are shown in Fig-' erated by the sprocket chain I8I driven from v the sprocket g'ear I82. This sprocket gear derives its power originally from the gear 44 which meshes with the gear I83 driving the shaft I84. This shaft mounted at the side. of the frame 2 is rotated in side bracket bearings I and I88. As indicated in Figure 2, there are provided two sprocket chains MI and 188. IM as has been explained drives the spur 99, while the chain I88 drives the spur gear III, which in turn drives the entire, group of rollers corresponding to the roller I I8 driven by the spur gear II I. The driving of the spur gears 99, H2, H3, H4, H5 and H8 operate the pair of rollers to return the described. The shaft I84 mentioned above drives continuously the spur gear I82.

As noted in Figure 1 just beyondthe bearing I88, there is provided a spring I2I which keeps the sprocket gear I22'out of engagement with'the shaft I84, so that the sprocket gear I22 rotates intermittently through the clutch drive I23, This clutch drive is'indicated more clearly in perspective in Figure 'I and is operated through the raised arm I25 which is pivoted toa bracket I28 extending from the frame 9.. The pivot is seen at;I2'I in Figure 7. When the arm I25 comes above the raised portion .of the cam' 28, the clutch I23 is moved to the right as shown in Figure 'I and the v I shaft I84 in this position drives the sprocket gear I22 as well as the sprocket gear I82 which as has been stated is rotated continuously sinceit is permanently connected to the shaft I84. The sprocket chain I8I as has been stated, drives the sprocket gear 99; which as is seen in Figure 2 and Figure ,4drives the rubber roller 98. Whep the lever 81 presses the second roller 93 against the roller 98 through the action of the spring 91 at that instant the shuttle I88 is drawn downward. There are provided six pairs of rollers I28 and I29, I38 and I3I, I82 and I33, I34 and I35, I38

- (portion I24 on the cam 28 by means of the lever and I31. The spur gear II 2 is driven from the spur gear 99v and at a speed lower than the spur gear 99. The spur gears H3 and I aredriven at the same speed but faster than the spur gear 2. The spur gear I I5 is driven slower than H3 and I I4 and the gear -I I8 is driven faster than either H3, H4, or I I5. The result is therefore that the shuttles between the rollers 98 and 93 and between the rollers I38 andfll3l, I32 and I33, I 38 and I3'I, advance more rapidly than those shuttles driven by' the rollers I28 and I29; I34

and I35. Asthe shuttles come down to their end positionsall of the shuttles are lined up together, each shuttle having a Uv shaped" opening I38. "As indicated in Figure 10, this U shaped opening is made, longer in the shuttles that move faster. The shuttles that'move faster are the paper shuttles or the shuttles in which the paper is drawn downward and the adjustment ofthesize of the U shaped opening I38 and the length'of'the shutties are such that the paper extends beyond the edges of the foil. The shuttles are drawn downward at times when the six, pairs of rollers mesh together. This occurs when the roller at the end of the lever arm 19 shown in Figure 5 falls in the low part 11 of the cam 26. At this moment the arm 9| carrying the curved rod 93 is released and the spring 91 forces the freely sustained elements againstthe flxed rollers. While the cam 26 remains in this position, the shuttles are drawn downward. Initially the shuttles arepo'sitioned just above the cutting knives I99, I46, III, I42, I49 and I as indicatedin Figure 2 and Figure 4. The shuttle Ill comprises two metal strips 145 and I46 which may be joined at one long side but are opened at the top and bottom. ,The material of the shuttle is preferably made of spring steel and suiiiciently flexible so that the sides between which the normal foil or paper is inserted, may

be pressed together by the pressure of the springs 91 forcing the rubber rolls against one another.

At the top of the shuttle there is provided a flexible strip Ill which is made fixed to the shuttle atone end and to rollers at the other end.

This is indicated in Figure 4, where the strip I41 is made fast to the cylinder I I9 driven by the spur gear III. The shuttle is also provided with a small extending hook I09 which comes in 'contact with a pin I49 extending from the bearing housing I49 through which the roller or cylinder III is supported and rotated.. It will be noted 'that the spur gears H6, H1, 9, move at sub-'.

of the cam 20. In this position all of the' rollers III are moved and the shuttles drawn upward to,

the position shown in Figure 4. At this time the rollers 96 and 98 are of course parted, the end 19 ofthe lever arm '19, beingaway from the low portion 11 of the cam 26. After the condenser windings have been made as will 'be explained later, and while the shuttle is in the position' shown in Figure 4, the knives I99; I40, Ill, I92, I" and I. are simultaneously operated. The

operation of the knives occurs simultaneously through the action of the plate I69; Each knife is attached and projects into the plate I66. The plate I69 is supported on the shuttle I'I".about which it is free to move. Thelower end of the plate I59 has extending therefrom an arm IBI at I the end of which is a roller bearing I62 which bears against the cam 26. The'cam 26 is.pro-' vided with a projecting raised portion In which as shown in Figure .5, throws the arm carrying "I62 outward to the right,'therefo re moving the top of the plate III as viewed in Figure 5 to the left. The knives, I39, I, Ill, I42, Ill and I are positioned normally as indicated in Figures 2 and 4 with the plate portion-facing towards the right and just beyond the slots nthe frame In where the shuttles pass. The knives are formed of two parts, the cutting plates which have already been named. I99, I46, IlI, I42, I49 and I, and the bearing edges I" which are held in the framell" in a cylindrical perforation in the frame by-means of thescrews I66. Theposition of the edge l ll may be properly ad winding of the condenser element begins.

justed by rotating or moving the cylindrical body I" in which the bearing edge is formed. The action of the plate I66 is such as to sweep the knife edge againstthe bearing just beyond the end of the shuttle. I 9

- The knives I99 are set in the plate I59 in the perforations ISl-and held in place by the lock 'bolts I69. These knives may be removed and replaced or sharpened when they becomezdull. Theejecting mechanism for ejecting the windings when completed has already been explained in ing. Themandrel is'in the position inthis.

case as shown in Figure 4. The next operation is the feeding and the winding of the foil and paper bythe downward motion of their respective shuttles IIIII to the place where the slots I38 becomealigned with the fingers I6I and I62 as indicated in Figure 4. These fingers are pivoted I by the shaft I63 held by the frame arm III. The

lower end of the fingers are tensioned by means of aspring I64. The fingers I6I, I62 are therefore formed as clamping jaws and it will be noted theyare operated from their lower ends through the arms I65 and I66.respectively. Formed 'as a part of the jaws I6I and I62 from :each arm I65 and I66, there projects at the end a pin I6'I The movements oflthe arms are conand I66. trolled by the cams 29 and 39 moving against the pins I66 and I6! respectively. The cams 29 and 99 as viewed in Figure 4 rotate in a counterclockwise direction. In Figure 4, the jaws are shown in an open sition. When the projection I69 of thecam, 3 .comes to the right of the pin I61, the projecti IIIlof the cam 29 is also at the right of the p n I66, The slow movement of the cams 29 and 39 in these positions rapidly force apart from one-anotherthe pins I61 and I68 and therefore bring together the jaws or fingers I6I and I62 in a position-aligned with the U shaped slot I39 in the shuttles Hill. It will be noted in this respect that the projection I69 is convex-on top and therefore as the pin I6I rides, over it, the pin is actually moved to the right while the ,pin I69 is moved to the left. Both projections, however, continue to move to the right in'the same counterclockwise rotation. These jaws remain closed until the pin or arm 63 of thev bellcrank lever 64 rises off the depression I66 in the cam 21 as indicated in a position shown in Figures 13 and 14. When the'pin 63 assumes this position the shuttles I96 have already been raised,

Too

so that the mandrel when it closes; closes only over the paper and foil held fast by the closed jaws IN and I62. As the mandrel closes, the jaws I6I and I62 snap open so that the foil and paper is not 'held below the'mandrel when it' begins to turn." During this operation, the jaws of the mandrel remain'stationary in a position with the opening aligned perpendicularly inthe direction of the shuttle. ,After the mandrel has closed, and the shuttle withdrawn. and also after mechanism described previously allows the mandrel to be turned by the shaft I1, and the This, continues until the winding has accumulated the desired number of turns which is adjusted by the proper choice of the gears. shown in Figure 9. The choice of gears may be varied since their relative position maybe varied by the arm Ill 'the jaws I9I and I62 have opened, the clutch"- carrying the gear Nib The gears 2i and I9 may be mounted in any desired position in the slot I12 depending upon the proper'choice of gear size to produce the desired ratio of turns of the mandrel shaft with that of the control mechanism.

As will be clearly understood from-the description of the mechanism above, one complete rotation of the cam shaft I4 corresponds to the completion of onewindingJ The operation of the mechanism is repeated with each rotation of the cam shaft I4. The winding of the condenser foil and paper on the mandrel will continue until the protrusion I13 on the cam 28 comes beneath the finger 30 of the clutch lever 30. When this occurs the shaft I'I driving the mandrel 43 is freed and the winding comes to a stop. when the winding has ceased, the projection I53 on the cam moves the knife plate I50 and the knives as viewed in Figure 2 move to the right cutting off the foil and paper. This is quite a rapid "operation and the finger soon passes beyond the projection I13 allowing the shaft I! to drive again the mandrel shaft'li' and wind up the loose ends of the condenser winding. The mechanism of sealing not previously described then comes into play. g

The mechanism is shown in Figure 2, Figure 7 and Figure 8.

Mounted on an extension of the frame I0 is a small glue-pot I14, and above this at the left is mounted asmall pulley I15 which is rotatably mounted with a shaftl'ificarrying the glue brush 1'". That is, the shaft I18 and the brush I'II turn with the pulley I15. A spring is provided at one end of the shaft'to keep the brush in the position shown in Figure 2. A line I18 is wound about the pulley ms to which it is also attached at one end, while the other end is attached to the arm I 80. The arm' I80 has a projecting finger I8I which is held in contact with the .cam 32 by; means of the spring I82. The arm I00 is pivotcd at the base bythe pivot I03. The other end'of the spring mentioned above-is attached to a second arm I84 which also is pivoted with an upwardly projecting finger I05 .which is held in position against the cam 3|. The projection I06 on the cam 32 throws over the arm I00 t0$1lh6 right, thus raising the glue brush I11 against the condenser winding on the mandrel. Shortly after-this occurs, the projection I05 comes in v the depression in the cam 31, thus allowing the roller I01 carried at the end of the arm-l0l to press against the condenser windings. This completes the sealing operation and shortly after this occurs the finger 34 again comes under the raised portion 33 on the: cam 28 bringing the mandrel to'rest with the mandrel in a horizontal position, that is the split between the mandrel halves is lined perpendicularly upward in the direction of the center shuttle. The mandrel is brought to a stop in the exact position by means of the mechanism shown-more particularly ,in Figure I9. This is accomplished by means of the stop nut 58 which comes in contact with the' head of the set screw 51 as the clutch releases the shaft L from the shaft II. The shaft I'l' continues to turn on account of the action of the dra spring until the head of the bolt 50 comes in contact with the projection of the set screw 51: This stops the mandrel in the position abovedescribed. The next operation isthat-of removing the condenser'winding and this occurs as is shown in Figures 13 to 18, the winding being completely ejected when the pin 63 has risen to the top of the projection 62 of the cam 21. The pin 03 is imrecess 'I'I in the cam 26.

mediately returned to the depression I00 and.

the-mandrelis opened in a horizontal position ready to receive the paper andthe foil for the new winding. The shuttles I00 in which the paper and foil from the rolls 1 at the top of the frame 6 are threaded normally in the position indicated in Figure 4. At the time that the mandrelis opened the rollers 96 and 93, shown more .clearly in Figure 6 and the other corresponding rollers are brought together by means of the roller'18, at the end of the arm 19 dropping into the v This brings downward the shuttles in their proper speeds and to the position where the jaws IGI and I'GT-may grasp all of the foil and paper by coming together in the U shaped opening of the shuttle slots. The rolls 96 and 03 are immediately released when the shuttles have reached their lower position and as soon as the jaws I61 and I62 have grasped the. paper and foil, the rollers I I0 are operated carrying upwards or returning the shuttles I00 to the, position indicated in Fig. 4. The mandrel is then closed by the pin 03 rising out of the depression I60. The jaws IG I, I62, following this are opened and their the shafts I7 and I 'I' are again connected so that the mandrel is rotated for winding up the next winding. .The machine is capable of producing condenser windings of a size depending upon the width of the paper and foil that the machine normally carries. The number of turns may be determined solely by the proper choice of gears as has been explained above and condenser windings of from 50 to 60 turns have been made in the present type. of machine'herein described. These condenser windings may be rapidly made and 'the machine ofthe present invention is capable of turning outfrom. at least Without further enumerating the variations that the present embodiment might take, and without limitation to the exact embodiment described above, I new claim "as my invention:

- 1. Iii a machine for automatically making condenser windings, means for feeding the paper and foil including shuttle means formed of spring metal in which paper and foil are advanced, a mandrel, clamping means positioned below said ing the paper and foii in said shuttle, said mandrel being split and means for opening and closcoupled and means operated thereafter to bring the mandrel shaftwto rest in adesired position.

3. In a machine for-making automatically condenser windings, a mandrel shaft having a mandrel formed of two parts, one pivoted adjacent the other, and having a projecting end, a collar .positioned over said mandrel, and means includ ing a camfor moving said collar in positions at the free end of the mandrel, at the end having the projection, and in a position between.

4. In a machine for making automatically condenser windings, means for win dingautomatlcally paper and foil on a mandrel, means for stopping said mandrel for cutting the foil and paper,

. mean's for continuing the windingto wind the cut ends, means for sealing .the same and means for stopping the mandrel when the sealing is completed.

3,000 to 10,000 such windings per normal day.

' mandrel and in line with said shuttle for grasp- 5. In a machine for making automatically condenser windings, means for winding automatically paper andv foil ona mandrel, means for stopping said mandrel for cutting the foil ,and paper, means for continuing the winding to wind the cut ends, means for sealing the same, means for stopping the mandrel when the sealing is complete and means for ejecting the winding and threading the new winding while said mandrel is at rest.

6. In a machine for making automatically condenser windings, a frame, means for supporting a plurality of paper rolls on said frame, a plurality of guides, each of said guides being provided'with a shuttle, means including said shuttles for feeding the material from said rolls to a central point, a mandrel positioned at said central point and means positioned below the mandrel for graspingthe material in said shuttles and means for returning said shuttles to a 'normal position.

7. In a machine for making automatically condenser windings, .a frame, means for mounting rolls of foil and paper at points near the top of saidframe, means for threading said foil and paper to a central point including a plurality-of shuttles substantially enclosing said paper and foil, guiding means for guiding said shuttles,-

means for suspending said shuttles normally in the upper part of said guiding means, a plurality. of knives positioned at various points below the normal position 'of the-shuttles, means,for operating saidshuttles tobring them together at a central point, a mandrel positionedat said central point and means for grasping the paper and foil in said shuttles and means allowing said shuttlesto return to their normal position.

8a In a machine for making automatically condenser windings a frame, means for mounting rolls of foil and paper at points near the top of said frame, means for threading said foil and paper to a central point including a plurality of guides, a spring shuttle provided in each .of saidguides substantially surrounding said foil and paper, means for exerting pressure on the outside of said shuttle to grasp said foil and paper and to advance simultaneously said shuttles to a central position, means provided at the central position for grasping the paper and foil in said shuttlesand means for'returningthe shuttles to their normal. position. Y

9. In a machine for making automatically condenser windings, a shuttle mechanism for feeding the foil and paper comprising a guide having a shuttle therein comprising two spring surfaces at eachside of saidpaper and means providing an opening at the lower part of said shuttle for grasping the paper and foil within the shuttle.

10 In "a machine for- 'auto matlcally making condenserwindings, a frame having spindles for holding rolls of foil and paper spaced substantially radially from a central assembly point? a plurality of guides, means for drawing the foil a and paperthrough the guides to thefmandrel means, means for retracting the drawing means,

means for grasping the ends of the foil and paper,

and mandrel means for winding the same.

11. In a machine for automatically making I condenser windings, in combination means for feeding foil and paper of a plurality ofrolls of the same to a central point, a mandrel positioned at said central point, said mandrel having one stationary part and one pivoted part, the pivoted part having aportion adapted to fold with the stationary part and an extending arm at the other end thereof, a collar positioned over said mandrel substantially at the point of pivot. means for moving said collar longitudinally of said mandrel whereby thewinding is ejected when the collar is moved in one direction "and the mandrel direction.

' 12. In a machine 101 automatically making condenser windings in combination means for feeding a plurality of rolls of foil and paper to a central point, said means comprising a frame having a plurality ,of guiding members, means for moving said. foil in said guiding members and a plurality of cutting edges each positioned in said frame at correspondingly different points in said guiding means corresponding to diflerent distances from said central point and means singly operative for operating said several cutting means for severing said foil and paper.

- 13. In a machine for automatically making condenser windings in combination, a frame having a plurality of substantial radial guides for guiding strips of foil and paper to a central point, apair of cutting knives positioned across said guides, means holding one set of saidknives in a fixed position and means operative to move the other set of said knivesto sever-saidfoil and paper.

- GEO. W.

-is opened when the collar is moved in the other"

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