US1641389A

US1641389A - Condenser-winding machine

Info

Publication number: US1641389A
Application number: US578513A
Authority: US
Inventors: Frederick C Kroeger; Harry E Norviel
Original assignee: Delco Remy Corp
Current assignee: Delco Remy Corp
Priority date: 1922-07-29
Filing date: 1922-07-29
Publication date: 1927-09-06
Anticipated expiration: 1944-09-06

Description

Sept- 6) F, c. KROEGER ET AL CONDENSER WINDING MACHINE Filed Jul 29, 1922 7 Sheebs-Sheet l 2! [Z/Iuz e 5525 fig.

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. 1,641,389 Sept 1927' F. c. KROEGER E GONDENSER WINDING MACHINE Filed July 29, 1922 7 Sheets-Sheet 2 Se t. 1

p F. C..KROEGER ET AL CONDENSER WINDING MACHINE Filed m 29, 1922 sheets-sheet 5 calamari x IIIIIIIIII/ Sept. s, 1927. 9

F. c. K'ROEGER ET AL CONDENSER WINDING MACHINE- Filed July '29, 1922 '1 Sheets-Sheet 1 641 Sept 1927' F. c. KROE'GER ET AL.

CONDENSER WINDING MACHINE Filed July 29, 1922 '7 Sheets-Sheet 5 W' .dr"

Sept. 6, 1927.

F. C. KROEGER ET AL CONDENSER WINDING MACHINE Filed July 2 9, 1922 7 Sheets-Sheet 6 .152" A JHUEJ TM rungy IIIIIIIIIIIIIII/l Filed July 29, 1922 I t' y F. C. KROEGER ET AL CONDENSER WINDING MACHINE Sept. 6, 1927.

ZZZ? 1755555 electrical apparatus,

a companying drawings,

Patented Sept. 6, 1927.

I UNITED STATES FREDERICK G. KROEGER AND HARRY E.

NOBVIEL, OF ANDERSON, INDIANA, AS-

SIG-NOBS, BY MESNE ASSIGNMENTS, T0 DELCO-REMY CORPORATION, OF DAYTON,

OHIO, A CORPORATION OF DELAWARE.

CONDENSER WINDING MACHINE.

Application filed July 29,

This invention relates to condensers for and it is among the ob je'tsof the invention to provide a condenser which is efiicient in operation, compact in structure, and which maybe manufactured at a small cost.

Other objects of the invention are to provide methods of manufacture and apparatus for the manufacture of condensers of the character described.

Other and further objects of the present invention will be a parent from the following description, reference being had to the wherein a preferred embodiment of the present invention is clearly shown.

7 In the drawings:

Figs. '1, 2, and? taken together constitute a side elevation of a condenser winding machine employed for carrying out the novel processes herein described and for making a condenser of the kind referred to;

Fig. 4 is a sectional view taken on the line "4-4 of Fig. 3; I p i n Fig. 5 is a plan view of a portion of the winding machine;

, Fig. 6 is a front view looking "in the di-' rection of the arrow 6 in Fig. 5, certain parts being shown in section, the section being taken on-the line 6-6 of Fig. 3;

- Fig. 7 is a side view partly in section of the winding center adjusting sleeve; 1

Fig. 8 is an end view of the condenser core driving center;

Fig. 9 is a sectional line 9-9 of,Fig. 8;

Fig. 10 is an end core idle center;

view taken on the view of the condenser Fig. 11 is a sectional view taken on the line 11-11 of Fig. 10;

Fig. 12 is 'asectional line 12-12 of Fig. 2;

Fig. 12 is a fragmentary plan view of the door hinge;

Fig. 13 is a sectional view taken on the line 13j-13of Fig. 3; i

Fig. 14 is a fragmentary sectional View taken on the line l t-14; of Fig. 5;

Fig. 15 is a fragmentary sectional view tal eri on the line 1515 ofFiga 5; and

Fig. 16 is a fragmentary sectional lyiew taken on the line 16-46 of Fig. 5.

'.lhe.- frame of the-winding machine includes 'ashallow box 20 provided with, a door view taken on the thin paper which erably metallic present invention,

'30 and 34, and

the afiix a. For example,

1922. Serial N0. 578,513.

or cover 21 having a plurality of glass windows (see Fig. 12). The box 20 therefore provides an enclosure for and supports rolls of tin foil or other metal foil and rolls of provide the dielectric or insulation between the strips of foil included in the condenser. The box 20 is provided at its .under surface with mounting pads 23 by means of which the box may be mounted upon a suitable horizontal support so that the parts of the machine which require control and manipulation by the op-" erator will be conveniently accessible. This support is not shown in the drawings but.

is preferably any suitable table which will support the machine three to four feet from the floor. The box 20 with its cover 21 provides a substantially dust proof enclosure for the condenser material. The box 20 is prefsuch as cast iron and may be heated when necessary in any desirable manner such as by electrical resistance elements in order to assist in ex elling some of the moisture from the con enser paper. As this heating means is not a part of the it ,isnot disclosed. The front end of the box 20 is provided with a mounting pad 24. having a finished surface against which is bolted. by screws 25, a

. frame 26 for supporting the guides or chutes for the condenser material, the core about which this material is wound, and the devices for turning the core and for applying pressure to the condenser material as it is wound about the core.

The devices for supporting the condenser material in the box 20 and for guiding this material to the outside of the box, will first be described. Thebox 20 encloses and supports two rolls of metal 'foil, tin or aluminum indicated by the dot and dash circles six rolls of condenser paper indicated by the dot and dash

circles

31,32, 33 in the upper row, and 35, 36, and 37 in the lower row. The strips of material which are withdrawn from these supply rolls are designated by the roll reference number with the strip of tin foil being withdrawn from the roll 30 is shown at 30*, the strip of paper withdrawn from the paper roll 31 is shown at 31'. Each supply roll is mounted on a spindle car 'ng the drum of a friction tension device w ich" tends to keep the condenser material in the i which is formed integrally with the box 2O.

" the bearing 42, and a collar 48 which turning by The shaft 40 is axially slidable through the bearings 41 and 42 and its position with respect to the frame or box 20 is controlled by a nut 44bearing against the bearing 42 and threaded on the threaded portion 45 of thespindle 40. A spring 46 which is interposed between a washer 47,

which bears against pinned to the shaft 40, maintains the screw 44 normally against the bearing 42. It is apparent therefore that by turning the screw 44, the shaft 40 may be moved endwise and therefore the supply roll 37 can be adjusted so that it may have the desired relation to the other supply rolls of condenser material. Each roll of material is mounted on preferably a wooden core such as core 49. The roll 37 and the core 49 are held against a disc 50 carried by the shaft 40 with the coresupported upon an annular flange 51 WhlCh lines up the core 49 concentric with the shaft 40. A wedge 52 keyed to the shaft 40 but slidable with respect thereto, is maintained in clamping engagement with the core 4gby means of a nut 53 having threaded engagement with the threaded end 54 of shaft 40. Each disc 50 is provided with an annular flange 55, the outer surface of provides a brake drum which is frictionaily engaged by a .friction'member 56, carri by a lever 57 which is pivotally mountedat one end upon av stud 58 secured to the side wall of the box 20. To one end of. the lever 57 is attached a spring 60 having'its other end attached to'a link 61 which n turn is attached to a screw 62. Screw 62 1s slldable up and down with respect to the top of the box 20 but is prevented from means of a set screw 63 having threaded engagement with boss 64'provided on the frame 20 and having its inner end pro e'ct1ng into a groove65 provided in the screw 62. A nut 66 cooperates with the threaded upper end of the screw 62 so that by turnlng the nut 66, the screw 62 will move up and down to vary the tension "in spring 60 and consequently the amount of friction,

produced by the engagement of members-55 and 56. The brakes for the upper row of material supply rolls are the same as those of the lower row of supply rolls with the exception that the brake position and the links 61 are of course much shorter than the links 61 since the upper row {if} s ipdles is so much nearer the ,top of the During thewinding operation it is neclevers are reversed in essary to relieve the tension on the brakes by throwing the brake members 56 out of engagement with the drums 55. This is accomplished in one operation by depressing a foot pedal indicated diagrammatically at 70 in Fig. 3, the pedal 70 being preferably located near the floor and attached by link 71 to the free end of a lever arm 72 which is attached to a shaft 73 supported by bear ings 74 which are attached to the side wall of the box 20. The shaft 73 carries a plurality of fingers 75 each adapted to engage a lever 57. Just below the upper row of supply roll spindles there is a similar shaft 76 carrying fingers 75, and each of the

shafts

73 and 76 carries an arm 77 located adjacent the front end of the box 20 (see Fig. 2)- The arms 77 are connected by link 78, It is apparent therefore that downward movement of the link 71 will cause all of the fingers 75 to move downwardly and to press all of the brake levers 56 downwardly so as to permit the drums 55 to run free. Spring 72 returns the lever link 71 to inoperative position.-

The spindle 40,v which supports the foil supply roll 30, is provided with means for turning it independently of the other supply roll spindles. This means includes a screw having a knurled head 79 which is 'so attached to the shaft 40 as to permit adjustment of the nut 44. The shaft 40 may be rotated by manipulating the knurled screw head 79 without turning the nut 44, in order to move strip 30 independently of the other material.

Between the rows of material supply rolls there are a number of

shelves

81, 82, 83, 84, 85, and 86 which are mounted upon bolts 81*,82", 83, 84, 85, and 86, respectively. Each bolt, such as the bolt 86 shown in section in Fig. 12, has a head 88, bearing against an outer finished surface on the outside of the shelf 86 and by reason of turning down the nut89 on the screw threaded end 90,the finished surface on the inner side of the shelf 86 is clamped against a boss 91 having a surface finished at right angles to the axis of shaft 40. .Care is taken to locate the shelf bolts parallel to the axes of the supply roll shaft and to construct the shelves so that the guiding surface, such as the surface 86 of the shelf 86, will be parallel to the spindle 40. This arrangement insures keeping the strips'of condenser material parallel to one another and to the supply rolls so as to keep the material as near straight and flat as possible. It will be noted that the shelvesassist in preventing dust or lint dropping from above down on the strips of material as they pass from the supply rolls to the guide chutes which will now be described.

The frame 26 supports a rod 101 carrying a chute 100, a rod 102 carrying a chute 103,

. ject slightly into denser paper stri upon a spindle 140,.journaled within ball a rod 105.carrying a chute 104, and a rod 106 carrying a chute 107. The front end wall of the box 20 is provided with openings 108,109, 110, and 100, 103,104, and 107, respectively, to pro-' 20 and to be sup apparent from lfiigs. 1, 2, and 3, the chute guidesv the" foil strip 30, the chute 103 guides the three su erimposed' paperstrips 31, 32*, and 33", tiie chute 104 guides t e foil strip 34, and the chute 107 guides three superimposed paper strips 35, 36*, and 37 The

rods

101, 102, 105, and 106, are slidablc across the frame 26, that is horizontally slidable, and are provided with adjusting

nuts

112, 113, 114, and 115, respectively. Each of these nuts is. threaded onto one end of the chute supporting rod and is maintained in engagement with the outer surface of a sideof the frame 26 by means of a spring 116 which bears against the frame 26 and a collar 117 pinned to the chute supporting rod (see Fig. 15). Each chute is provided with a groove 118 whichservcs aside for the. material, andwvith mounting ears 119. Dowel pins 120 pass through these ears and through the chute supporting rod in order to locate the chute in correct relation to its shaft and screws 120 secure the ears and chute to the supporting as shown in Fig. 15. It is obvious that by turning the adpisting nuts, the chute may be shifted to the right or to the left as viewed in Fig. 5,. in order to align the cons and'to secure the proper location of .the foil strips with respect to the paper. Since

chutes

100 and 104 carry foil, and chutes 103 and .107, paper, for ready reference, these chutes are so labeled in Figs. 3, 5, and 13.

' The mechanism for rotating the condenser core will now be described; The'frame 26 supports a stub shaft upon which is mounted a gear 131, having a hub 132,.to which is attached, by a pin 133, the hub 134 of ahand wheel 135 carrying a handle 136. Thegear 131 meshes witha gear 137 mounted on a shaft 138 carried by frame 26. Gear 137 meshes with a gear 139 mounted bearings 141 and 142 carried by a hollow sleeve 143 formed integrally with the frame 26. The gearing is enclosed by a gear cover 144 attached to the frame 26. The spindle supports a condenser core driving center 145 shown fragmentarilv on an enlarged scale in Figs. 8 and 9. he driving center is dished out at 146 so as to receive the end of a cylindrical wooden core 147, see Fig. 6, and the face 148 of the center 145 is provided with teeth 149 which bite into the end of the wooden core 147 when the latter is pressed against the center 145 in the manner tobe described.

111 permitting the chutes the front wall of the box'. orted thereby. As will be Shea, all

The frame 26 is provided with a sleeve or bearing 150 coaxial with the sleeve 143 and within this hearing there is slidably and rotatably mounted a sleeve 151 havin a bandle 152. The sleeve 151 is provi ed with bearings 153 and 154, within which is journaled .an idle spindle 155 carrying an idle center 156 which is shown. fragmentarily on an enlarged scale in Figs. 10 and 11. The head 156 is dished at 157 so as to receive the end of the condenser core 147 and is provided with teeth 158 which will bite into the end of the wooden core, thereby causing the spindle 155 to rotate with the core. Hence the end of the core is not rubbed against a fixed center which might damage the core if the center were fixed instead of rotatable. The sleeve 151 is provided with a groove which includes a spiral portion 159 and a straight portion 160. The end of a set screw 161 cooperates with this groove. As the operator stands in front of the machine, as viewed in Fig. 6, and turns the handle 152 overhanded and away from him, the strai ht portion 160 of the groove will be broug t around in alignment with the screw 161 and hence the spindle 155 can be withdrawn from the core. By turning the handle in the opposite direction, the sleeve 151 will be moved to the right as viewed in Fig. 7 to clamp the spindle 147 between the

centers

145 and 156.

To start winding a condenser, a core 147 is located between the centers and the idle center "is moved toward the driving center until both centers are imbedded in the core then the idle center is locked in position. The core should turn freely. The tension on the supply rolls is adjusted so that the material Wlll wind easily but slack will be taken u Then the six papers and the bottom foi 34 are pulled together toward the core and under the bottom thereof. The margins of all the paper should line up, but the left-hand margin of the foil should extend beyond thepapers, preferahl to of an inch. These papers and oil are started around the core and one or p more turns of the spindle are made to he sure that the material has a firmgrip on the .core. A special tucking tool may be .used

to make the first layer have a firm grip on the core. This tucking tool resembles a small hoe having a blade so shaped as to curve around the core and tuck the free ends of the material strips between the core and the material as it comestang'ent to the core. As most operators are righthanded, the mechanism is arranged so that the crank 136 will be turned away from the operator, which is the most convenient and natural operation for a right-handed person.

After 'the six paper strips and the foil strip 34* have been attached-to the core, then the foil strip 30" is pulled down from chute 100, and is lined up with its right-hand margin extending preferably '1 to 5 2- of an inch over the right edge of the paper. A pressure roller 220, to be described later, is brought down into engagement with the material on the core. The spindle is rotated until the desired number of turns is wound on. If the thickness of the material is relatively uniform. and since the apparatus and process tend to produce a relatively uniform product, counting the turns is not necessary. When a certain diameter has been reached, the condenser capacity will be sufficient. If desired a revolution counter may be connected with shaft 140.

A, micrometer gauge 170, having a movable element 171, which when pushed in from home position moves a pointer 172 from the zero position to indicate minute increases in diameter, is mounted in'any suitable manner upon a bracket 173 having a hub 174 which is pivoted upon the ears 175 of a bracket 176 which is attached to the frame 26. During the winding operation, the bracket is pushed around as shown in Figs. 6, 3, and 5, and held in engagement with the head of a stop screw 177. When the desired diameter of condenser has been reached, this fact will be indicated by the pointer 172. After the winding is complete, the bracket may be swung clockwise as viewed in Fig. 5 so thatv the gauge will be out of the way when removing the condenser and putting in a bare condenser core, and also the roller 220 can be raised out of operative position. The top foil 3O is then severed close to the condenser, and the paper strips and foil 34 are severed about two inches back of the condenser sd as to prevent the possibility of a short circuit between the end edges of the two foil strips. It is evident that during the winding operation, the one foil strip 34 has been maintained a little toward the lefthand end of the core 147 while the other strip 30 has been maintained toward the right-hand end of the core 147. Also the left-hand side edge of the foil strip 34 will overhang the left-hand side edges of the paper insulation, preferably g g to of an inch, while the right-hand side edge of the foil strip 30 will overhang to the right of the right-hand side edges of the paper insulation a like amount. Y These edges of the strips of foil which stick out beyond the paper can be smashed in together to provide terminals for the condenser, or terminals such as flexible wires may be soldered to these projectin'g edges of the foil strips. This latter process of attaching terminals is practical where tin foil is used.

After the condenser material thus far described has been wound about the core, and has been severed, the roller 220 is lowered again onto the condenser and several turns of wrappipg paper are wound thereon, and

the end of the wrapping paper is secured by means of paste. The gauge 171 may be used to determine when the correct amount of wrappingpaper has been applied.

his wrapping paper is withdrawn from a roll 180 Wound upon a core 181 which is carried by a spindle 182, see Figs. 4 and 6. Spindle 182 is mounted upon a rod 183 which has a portion 184 slidable through an extension 185 which hangs down from the frame 26. A wedge 187 is held in clamping engagement with the core 181 by means of a nut 188 engaging the threaded end of the sleeve 182. Sleeve 182 is maintained lengthwise of the rod 183 by means of a shoulder 189 formed on the rod and by means of a pin 190 carried by the rod. A screw 191 carrying a circular flange 192 which engages a groove 193 in the part 184, produces endwise motion of the rod 183 when this screw is turned. Therefore by turning the screw 191 the wrapping paper 180 can be lined up with the condenser. The sleeve 182 is provided with a cylindrical surface 194 which operates as ment with the lever 197 bears against the underside of the extension 185. By turning the screw 201, the pressure between the

parts

194 and 195 can be regulated so that the wrapping paper can be held taut the required amount as it is wound upon the condenser.

During the application of wrapping paper to the condenser, the paper is unwound from the roll 180 and pulled around the underside of the roller 210 which is mounted upon bracket 211 attached by screws 212 to the frame 26.

The wrapping paper having been pasted down. the winding operation is completed. The condenser is removed from the machine by counterclockwise turning of the handle 152 (see Fig. 3), and is ready for the application thereto of a container tube, for the process of impregnation with a suitable wax and then for further and complete assembly as described in the copending application of Charles E. Wilson and Harry E. Norviel, Serial No. 576,933, filed July 25, 1922.

However. the present invention deals with the method and apparatus for winding cylindrical condensers upon suitable cores and particularly to means which provides for economically winding a condenser of the desired capacity within av very small space. In the first place, the condenser core is made as small in diameter as practical, the condenser foil is as thin as can be handled. preferably about .0005 of an inch in thickness, and the condenser paper is as thinias can be obtained, and yet provides the necessary insulation. The paper is preferabiy from .0003 to .0005 of an inch in thickness. In order tobe sure that the insulation is as perfect as possible, three of these strips are superimposed to form the insulation between the foil strips. It is I almost impossible to obtain paper which is three strips so that its axis the space between

arms

223 and 224 of levers 225 operation,

absolutely free from minute holes which would permit the passage of current directly from one foil to the other. 4 Therefore to insure that the insulation be as perfect as possible, three strips are superimposed so that one strip of paper won (1 cover up a hole in another strip. It is, of course, inconceivable that three minute holes in the of paper would ever be super-. imposed. It has been found possible to manufacture condensers satisfactorily .with but two strips of paper superimposed, that is, in the machine disclosed one could dispense with one of the upper paper rolls and with one of the lower paper rolls in the winding box 20. Even when three strips of paper are used, the total thickness will be only .0009 to .0015 of an inch. fObviously such insulation will permit windin the foil strips very close together there y increasing the capacity in t e condenser which, according to the law of condensers increases the condenser foils is decreased.

An important feature of the invention which enables the manufacture of condensers in the very compact form is the application of the condenser material to the core under suitable pressure. This packing down or rolling down process is carried out preferably by means ofthe' metallic roller 220, (see Fig. 16) having substantial weight, which is mounted loosely upon a rod 221 having reduced threaded portions 222 which are received by. notches provided in the and 226 The nut 227 when tightened causes the shoulder 228 of rod 221 to bind against the arm 224 and the nut 227 when tightened causes the arm 223 to be clamped against a shoulder 229 of the rod 221. A collar 230 spaces the roller 220 from the respectively.

arm 223- and the shoulder 228 "spaces at the roller 220 from the arm 224. The

screws

231 and 232 having threaded engagement with the

arms

223 and 224, respectivel ,are used to adjust the location of the r0 221 will be parallel with the condenser winding core to insure that the roller bears as equally as possible upon the condenser winding material on the core. In order to apply pressure to the roller 220 during the winding and to throw the roller into inop' erative osition while the work is being removed rom the machine, there is provided a lever 240 attached to a. shaft 241 carried and the axis of roller 220 243 and 244 having formed integrally therewith tubes 245 and 246 respectivel The tubes 245 and 246 engage telescopica y with

tubes

247 and 248 having hubs 249 and 250 respectively, see Fig. 13. Adjusting screws 251 and 252 pass throu' h hubs 249 and 250 respectively and have shoulders which bear I'BSPBCtlVQlg against pressure springs 253 and 254. bviously b adjusting the screws 251 and 252, the ten enc for the springs and 254 to separate the respective telescoping tubes Wl'llCh enclose them, can be varied. The hub 249 carries stud 260 upon which are mounted rollers 261 in axial alignment, and these rollers ,engage axially aligned arcuate slots 262 which are provided in each of the arms 263 forming a part of the lever 225. The hub 250 is also ro-' vided with pins 264 and rollers 265 w 'ch engage within arcuate slots similar to the slots 262, these slots being provided in the arms'266 forming a part of the lever 226, these arms being formed similarly to the arms 263. The

levers

225 and 226 are pinned; with their arcuate slots in ali ment to a shaft 267 which is pivota y mounted u on the frame 26 and with its axis paralle to the condenser winding-spin, dle. When the lever 240-is in the position shown in Fig. 3, the roller 220 is in ition to bear against the condenser matenal as it is wound upon the core. This pressure will vary somewhat as the condenser increases in diameter but the variation will not afiect the process. This pressure will vary from 30 to 40 pounds and is suflicient to tend to keep all of the wrinkles ironed out from the.

paper and foil as they are wound around the condenser core and to cause the condenser materials to be wound in compact form with air spaces reduced to the minimum. The result is that itis possible to provide a condenser having .25 to .30 micro farad capacity which is about of an inch in diameter and uses foil 1 inches wide and .0005 of. an inch thick, there being three thicknesses of condenser paper between the foil strips as described. Such a condenser is suitable for electrical ignition work.

-When thelever 240 is -pulled forwardg that is clockwise as viewed in Fig. 3, until it engages a stud 270 carried by the frame 26, the

levers

225 and 226 will be rotated 1 III III

turned so as to As the condenser material is withdrawn from the supply rolls in the box 20, the tension on the strips will be increased as the diameter of the supply rolls decreases. Therefore the adjusting screws 62 are relieve some of the tension in the spring 60. During the use of a roll or aper, this adjustment is made but a few times. Therefore it has not been found necessary to provide means which will automatically decrease the tension in the spring 60 as the diameter ofthe supply rolls decreases.

It is believed that in order to wrap condensers successfully that the condenser ma-' terial strips should be maintained as straight and smooth as possible lengthwise, and that edgewise the strips should be maintained parallel to one another and tothe axis of the core. chutes are provided with their material supporting'surfaces located parallel to the winding axis. The core centers are constructed to facilitate locating the core periphery concentric withtlle winding axis.

The tension on the different strips of con denser material should be maintained as near uniform as practical, and should be enoughto keep the strips free from buckling and transverse wrinkles. The amount of this tension may preferably be what the strength of the foil will permit.

These features of the machine and process materially aid the winding of the condenser material onto a core while applying pressure thereto.

While the form of mechanism herein shown and described constitutes a preferred form of embodiment of the invention it is to be understood that other forms might be adopted, allcoming within the scope of the claims which follow.

What we claim. is as follows:

1. A machine of the character described comprising, in combination, a plurality of reels; means on each of said reels for resisting the rotation thereof; means for regulating individually the resistance offered by each of said aforementioned means; and common means for operating all of the first mentioned means to discontinue their resisting the rotation of the reels.

2. A machine of the character described comprising in combination, a plurality of reels; braking devices on each of said reels to resist the rotation thereof; means for adjusting individually each of said braking devices; and manually operable means for releasing all of the braking devices concurrently.

3. In a condenser winding machine, the combination with meansfor rotating a .condenser core; of means for guiding condenser material to the core; a pressure roller; and means including a spring for caus- Hence the sleeves anding said roller to bear upon the core and material wound thereon with yielding pressure, and for moving said roller away from the condenser, said spring serving to yieldingly maintain said roller in inoperative position.

4:. In a condenser winding machine, the combination with a plurality of horizontally disposed spindles each for holding a roll of condenser strip material; means for rotating a condenser core; strip guiding means including a plurality of shelves for guiding material over certain rolls, and under certain other rolls, said shelves tending to prevent accumulation of foreign ma terial on the strips; and an enclosure for said rolls and shelves.

5. A machine of the character described, comprising in combination, a frame; a plurality of reels rotatabiy supported in said frame; a brake provided on each of said reels to resist the rotation thereof; means for adjusting each brake.individually to control the degree of braking energy exerted thereby; an operating linger engaging each brake; and common means for operating all of the lingers. concurrently to release all of the brakes and permit unrestricted operation of the reels.

6. A machine of the character described. comprising in combination, a frame; a pinrality of reels rotatably supported in said frame; a lever pivoted to the frame adjacent each reel, each lever including a member adapted frictionally to engage its respective reel to resist rotation thereof; a spring connected to each lever; an adjusting screw connected to each spring for adjusting individually, the frictional engagement of each lever with its respective reel; and common means for concurrently moving all of the levers out of frictional engagement with their respective reels.

7 A condenser winding machine comprising in combination, a frame; reels in said frame including condenser material; a conenser core rotatably supported on said frame and adapted to have the condenser material wound thereon; a rod journalled in said frame and movable transversely relative thereto; a chute carried by said rod and adapted to guide the condenser material as it slides over it on its way to the condenser core; a shoulder portion on said rod; a spring surrounding the rod and interposed between the frame and the said shoulder; and an adjusting nut on the rod. outside the frame, for causing the spring to be contracted or expanded laterally to adjust said rod whereby the chute-is kept in proper alignment with the core of the condenser.

8. A condenser winding machine comprising in combination, a box, one wall of which is provided with openings; a plurality of reels including foil and insulating material ltH] for condensers, rotatably su ported in saidtive opening in the box; means on the frame ing pressure,

the core, said for supporting a condenser core upon which is wound the condenser material; and an adjusting nut on each chute supporting rod for moving the chute laterally toalign the condenser material with the condenser core as it-moves over the chute to said core.

9. A condenser winding machine comprising in combination, means for rotating a condenser core; means for guiding condenser material to said core; a pressure roller; a pivoted arm supporting said roller; and means including a s ring for moving said arm to cause the rol er to bear, with yieldagainst the material wound on means being adapted also to move the arm and maintain it in a position in which the roller will not engage the condenser material. 4

1 A condenser winding machine comprising in' combination, means for rotating a condenser core; means for guiding condenser material to be wound on said core; a pivoted lever; a pressure roller journalled in one end of said lever; a control-lever; a spring connection between the control lever and the other end of the first mentioned lever, said spring connection urging the leverto move the roller into condenser engaging position when the controllever is in one position and moving the said roller away from the condenser when the control lever is moved into another position.

11. A condenser winding machine comprising in combination. means for rotatlng a condenser core'; means for guiding condenser material to be wound on said core; a shaft; levers pivoted on said shaft; a pressure roller journalled between corresponding ends of the pivoted levers, and adapted to engage the material being wound on the core; arcuate slots in the other ends of the pivoted levers adapted to receive rollers carried on hollow plungers; a rotatable shaft having hollow arms extending therefrom which telescope into the hollowplungers; springs interposed between the hollow arms and cooperating lungers tending. to move the latter away rom. theformer; and an operatinglever secured to the rotatable shaft for moving the rollers arcuate slot to the other whereby the pressure roler will be moved against or away from the condenser material on the core.

12. A condenser winding machine comprising in combination, means for rotating a condenser core; means for guiding condenser material to be wound on said core; a shaft;

a lever pivoted on saidshaft; a pressure roller rotatably secured to one end of said from one end "of the I pivoted lever and adapted to engage the condenser material as it is wound on the core; a roll containing slotin the other end of the lever; an operating lever; and a spring connecting the operating lever and the roll in the slot and so constructed and arranged as to urge the roll against one side or the other of the slot depending upon the position of the operating lever, whereby the pressure roler is urged against or away from the condenser material on the core.

In testimonywhereof we hereto affix our signatures.

FREDERICK o. KROEGER. HARRY E; NORVIEL.