US2260054A - Turn spacing device for coils - Google Patents

Description

Oct. 21, 1,941. fs. A. PLAT'T TURN SPACING DEVICE FOR COILS 3 Sheets-Sheret 2 Fildpct.. 2, 1940 Oct'. 2l, 1941. s. A; PLATT TURN SPACING DEYICE FOR COILS 3 ASheets-Sheet 3 Filed Ioct. 2, 194m Patented Oct. 21, 1941 Stephen A. Platt, Nutley, N. J., .assignor itc Wilbur B. Driver iCompanys Newark, N. J., a corporation ofNew lJersey Application catcher '2, 1940, serial No. 359,335

12 claims.

1The present invention relates to automatic coil winding machinery, .and morevparticiilarly to a device adapted to .uniformly and regularly space the ,individual turns of vclosely wound coils.

.In myat one-time co-.pending .applicationV Serial .Number 290,397., Bled ,Augusta 1939 mow U. 4S. VPatent No. 2,221,602,` ,issued Jani. 17., 1941)., and, also, my .presently .co-.pending .application Serial .Number 354,474, filed August 28, 1940., l. have .describedautomatic coil winding. machinery designed .to produce very uniform electrical resistance .coils of predetermined lengths.

Coils manufactured .by .the machines therein described .are whatare termed closely -wound coils; that is, the :adjacent turns thereof aresubstantially contiguous. Before such coils canl be actually used in .manufacturing of. electrical heating units, the Vindividual turns ymust be properly .spaced from each other. Heretofore, .it has been the practice to .stretch the individua-1 -coi'ls manually to provide this required spacing. Such practice, however, is open to numerous objections. -Unequal spacing -of the turns in hand stretched coils with consequent =hot spots in the electrical heating units often results. fAlso, spoilage .and waste frequently occur if the coils a-re stretched by hand.

While gauges and guides .have been provided heretofore for the assistance of the operator in determining the `extent of the stretch for each closely Wound coil, the personal equation has often resulted in inaccuracy and in defective electrical heating units. To .reduce such results to a'minimum, a 'common practice has Abeen :to have fskilled Workers space the individual .turns in .the .coi-ls by hand at the coilwind'ing facto-ry. But the :shipment of these coils with spaced turns has been extremely Iu-nsatisfaetory because -of the fact that leven carefully stretched coils become deformed or otherwise damaged 'during transit. As a result, manufacturers requiring accurate coils have `more and more resorted tothe practice of ordering the coils shippd to them in closely Wound form and .have then had'rthem stretched manually in situ just prior .to use, preferring to bear the -loss on coils improperly stretched lby their own Workmen. But this stretching has all the disadvantages herein above pointed out, and, in fact, `is Worse because factory hands engaged .in high speed production of electrical units .do not have the time neces- Asary to carefully stretch the coils to meet any given set of requirements.

The turn spacing devices or attachments con- Winding machinery .ofthe type described in my '20 stituting the subject-matter 'of the present invention are designed lparticularly to aord -a means of very accurately and automatically spacing the individual turns-of closely wound coils either at the place of original coil manufacture or in situ by the manufacturers of `electrical'resistance units. l

An .object of this 'invention 'is to produce a turn Vspacing attachment which may be 'applied to existing jcoil Winding 'machinery and -Which Will :serve to uniformly, accurately and automatic'allyspace the individual turns of closely Wound coils produced wbythe machine and place such coils in condition for immediate use'in electrical units.v

Afurther object vof this invention `is to 'provide a turn 'spacing attachment which may be con# veni'ently andv .quickly attached to existing coil aforementioned applications .and 'to othertypes of Vcoil winding machinery producing closely wound coils.

Still another object of my invention is Vto ,produce an automatic coil vturn spacing kdevice 'for use by lan electricalr manufacturer which maybe conveniently located wherever necessary in the assembly Vline of production for the production ci' 'spaced 'turn coils from closely wound coils previously purchased.

lYetanother object of this invention is the ,productionof the equipment to meet the foregoing objects which may be readily manufactured and produced .at low cost.

To. the accomplishment of the foregoing and such other objects as may hereinafter appear, this -invention consists in the construction and arrangement of parts hereinafter described, and then sought to be dened in the appended claims, reference being .had to the accompanying drawings 'forming a part hereof `and Which show, `merely Vfor the purposes of illustrative disclosure, preferred embodiments of the invention, it .being expressly understood, however,\that various changes .may .be .made in practice within the scope of the claims without digressing from the inventive idea.

In the drawings, in which similar reference characters denote corresponding parts:

Figure l is a front Velevational View of a coil Winding machine 'of the type described in my aforementioned copending applications to which one form of my .novel `.turn spacing device has been applied;

2 Tis, an enlarged fragmentary sectional view taken along the line 2-2 of Fig. 1 illustrating details of said device and viewed in the direction of the arrows;

Fig. 3 is a vertical section of the turn spacing attachment taken along line 3-3 of Fig. 2 and also viewed in the direction of the arrows;

Fig` 4 is a transverse section taken along line 4--4 of Fig. 3, also viewed in the direction of the arrows;

Fig. 5 is a View similar to Fig. 3 of a modied form of power-driven turn spacing attachment;

Fig. 6 is a diagrammatic illustration of the gearing associated with the device shown in Fig.'

5 and viewed from the right along the line 6 6 thereof;

Fig. '7 is a top plan view of a turn spacing device adapted for convenient location ralong an assembly line at the point of use of electrical resistance units so that the operator at such point may conveniently provide himself with coils having uniformly spaced turns of predetermined length from closely wound coils furnished to him; Fig. 8 is a vertical sectional view taken along line 8 8 of Fig. 7 and, viewed in the direction of the arrows; and 1 v f Fig. 9 is a side elevational view` viewed from the right of Fig. '7 of the device shown therein. Referring now to the drawings and iirst to Fig. 1, I8 denotes generallya coil winding machine frame of the type disclosed in my said co-pending applications. This frame is provided with a bearing flange II which rotatably supportson suitable bearings the journal portion of an axle or shaft I2 which protrudes from each end ofthe flange I I. One end of the shaft has keyed to it the stepped driving pulley wheel I3. The opposite end of the shaft I2 is constructed to receive any standard form of chuck I5, that illustrated being a well-known key-tightening type. This chuck I5 is adapted to receive and support hori- Zontally by one of its ends a winding mandrel I6 upon which the wire is wound into coil form. Suitable driving means for rotatingthe shaft I2 is provided. In the embodiment shown, this includes the motor 20 whose rotor shaft 22 has a stepped pulley wheel 23 fixed thereto. A driving belt 24 passed around the two pulley wheels 23 and I3 serves to couple the motor and chuckbearing axle or shaft I 2, so that the motor drives 'f the mandrel I6. Variability of speed is obtained by shifting the belt from step to step of the pulley wheels I3 and 23.

The frame I6 forwardly has an upwardly extending vertical iiange 36 which has a boreSI of friction, which co-operate with the mandrel I6 in Winding the coil, as described in my said Patent Number 2,227,602, are supported from the frame I6 at diametrically opposite points with respect to said mandrel. These rolls are movable toward and away from each other and the mandred I6. They may be locked in any desired spaced position with respect to each other and the mandrel. Likewise, the two rolls are normally biased with respect to each other and with respect to the mandrel axis and this bias may be varied at will. The rolls together with the mandrel serve to produce accurately wound coils with close turns which move oi the mandrel end I6 as described in my aforementioned patent and presently co-pending application.

Wire 38 for forming the coils is fed suitably to the mandrel I6 from a spool 40 and coiled thereon in a manner described in either one of my aforementioned patent and presently copending application or in any other desirable manner.

The wire 38 in its passage to the aforesaid bite is lubricated suitably, for example, in the manner described in my aforementioned patent and presently copending application.

The wire 38 is also suitably tensioned as it passes from the spool to the mandrel I6. This tensioning is accomplished herein, for example,

` through the agency of the metering wheel 46 in the manner described in my aforementioned patent and presently co-pending application.

Rotation of the metering wheel caused by the passage of wire 38 around it is used to control an automatic cut-olf mechanism illustrated diagrammatically by the knife blade operated periodically in a manner described in either of my aforementioned patent and presently co-pending application or in any other suitable manner. The wire coil C formed on the mandrel I6 as described in my aforementioned patent and presently co-pending application has predetermined pitch and closely spaced turns a, b. This coil during its formation rotates and moves outwardly along the mandrel towards its exit end I6. The turn spacing attachments illustrated in Figs. 1-6 inclusive of this application are intended to Ybe mounted in such manner as to operate upon the coill turns a, b of the ,rotating coil C, leaving the exit end I6', of the mandrel I6.

In Figs. 1 4:` inclusive, the turn spacing attachment; 'IIJ comprises a combination guide and cut-off tube or sleeve v'II (Fig. 3). This sleeve has in one portion a longitudinally extending bore 'I2 of larger diameter than that of the coil formed on the mandrel I6 and a second portion 12a of reduced diameter at its exit end, preferably substantially equal to that of the coil after spacing. The guide sleeve 'II is adapted to'be supported in the bore 3l of the flange 30 of the machine frame I6, being removably xed in place in saidflange by set screw 'I3 (Fig. l) or in any other convenient manner. The exit end of the sleeve is cambered at 'IIa to co-operate with the intermittently operated knife blade 66 for cutting oII predetermined coil section lengths from the spaced turn coil emerging from the tube 1I. 'I'he other end of the tube 'II projects from the ilange 30 toward the mandrel I6 whose end I6' projects into the bore 'I2 for a short distance.

Intermediate its ends, the tube or sleeve 'II is provided with a transverse recess or kerf 'I4 extending into thebore 'I2 in the manner shown for a purpose to be presently described. Since the bore 'I2 is of larger diameter than that of the coil C, an adapter sleeve 'I8 of iinished hardened steel or otherwear-resisting material is adapted to be borne in the bore "I2 between its inlet end 12b and the straight side 'Ilia of the kerf 14. This adapter sleeve has an internal diameter substantially equal to that of the external diameter of the coil C entering the bore 'I2.

' A slide frame 86 is suitably supported on the guide sleeve or member 'II and adjustably iixed thereto at 8|. This slide frame is adapted to extend at a right angle from the sleeve 'II and has a straight-sided slot 82. A slide block 83, whose over-all length is less than that of the slot 82, is slidably supported in the slot by the adjustment bolt Bil. This bolt extendsV through a bore in the frame and has a threaded portion 86 engaging in a threaded bore 8l of the from the machine frame is provided. This shaft has a gear I5| keyed thereto which meshes with a suitably supported idler gear |52. The idler gear |52 also meshes with gear |35 on shaft |34 so that rotation of shaft |50 imparts rotation to the gear and consequently shaft |34 and spacing or wedging wheel |40. f

The shaft also has a second gear |53 keyed or otherwise fixed thereto which meshes directly with the gear |23 on the sleeve IIB so that drive of shaft |50 directly rotates the sleeve IIB.

The shaft |50 has a third gear |54 keyed or otherwise fixed thereto. This gear meshes with a suitably supported idler gear which in turn meshes with a gear |56 keyed or otherwise fixed to the driven chuck I5. Thus-rotation of the chuck I5 serves to drive shaft |50 and in consequence to rotate both the sleeve IIS and the spacing or wedging wheel |40;

The gearing ratios are so selected that preferably the sleeve ||6 rotates at exactly the speed of rotation of the rotating coil C leaving the mandrel lt. Also the surface speeds of the contacting portions of the spacing or wedging wheel |40 and the coil turns are made substantially equal, motion being arranged vto be in the same direction so that there is no relative rotational motion between the contacting portions.

In this modification as in the previous modification, the Wedging effect of the spacing or wedging wheel |40 `may be varied by manipulation of the bolt |28 `to move the slide block transversely of the bore `and consequently vary the depth of penetration of edge |4012 of the wheel between adjacent coil turns. of penetration and the angle of bevel of the flange |40a determine the extent of spacing between turns, i. e., the pitch of the spaced coil.

Since the hardened Vsleeve ||5 through which the closely wound coil is progressing rotates at the exact speed of revolution of the coil inside it, the live rotating turns of the closely wound coil emerging from the sleeve |||5 travel at the same speed in R. P. M. as the tube. The spacing h wheel also travels at its proper dividing speed, i. e., it has a speed of rotation such that its surfaces contacting the turns of the wire have a surface speed equal to the surface speed of the contacting portions of the turns of the rotating coil. As a result, all mechanical parts are travcling in timed relationship with respect to the rotation of the wire coil. Since this relationship is such that no relative rotary motion between parts exists, the coil screws itself out past the edge of the wedging wheel in the manner described with respect to the nrst modification without any possibility `of marking or marring 'of the wire as its turns are spaced. The elimination of such marring or marking is very important because the electrical characteristics of the coil change markedly if markings or marrings are present. The result is that the coils with spaced turns produced by this device are notably uniform and highly accurate and free of defects such as those noted.

The spaced turns of coil pass from the guide tube or sleeve ||6 to a receiving tube 200 suitably carried in the opening 3| of the flange 30.

This receiving tube may be cambered at 200a to co-operate with the cutoff knife 50 to severl predetermined lengths of spaced turncoil.

The turn spacing attachments which have been hereinbefore described are designed most particularly for use by a coil manufacturer. As has This depth y' beenpreviously mentioned in this specification, many manufacturers of electrical heating equipment prefer to order closely-wound `electrical resistance coils such as those produced by the machine shown in Fig. 1 or by machines such as those described in my aforementioned copending applications. It becomes necessary, therefore, to provide a turn spacing device which may be conveniently used by such a manufacturer in the assembly line of production to space properly the turns of the closely wound coils'just prior to their insertion into electrical equipment. The modification disclosed in Figs. 7-9 inclusive is designed particularly to meet such requirement.

The turn spacer disclosed in these figures is very similar to that shown in Figs. 5 and 6 and comprises an elongated horizontally extended hardened steel tube or sleeve 2| 6 supported horizontally and rotatably journaled in a bearing 2|1a of a bracket 2|1 which is suitably supported at 2|1b by a base B of any suitable type. This sleeve or tube 2|6 while rotatable in the bearing 2|1a. of the bracket 2|1 is fixed suitably against longitudinal displacement as, for example, by the adjustable collar 222 and an annular flange (not shown) similar to the annular flange |2| of the modification of the Fig. 5. An annular external gear -223 is flxedly supported from the sleeve 2 6 for a purpose to be presently described.

The bracket 2|1 has a vertically extended slide frame 225 either integrally formed with it or permanently attached thereto. This slide frame has a vertically extending straight sided slot 22|:` closed at its bottom and adapted to receive a slide block 22,1 of smaller over-all length than said slot. A manipulating bolt 228 having a manipulating knob 228a and extending through a bore 229 in the frame wall and having a threaded portion 22821 engaging in a threaded bore 230 in the slide block 221 serves to move the block into any adjusted vertical position in the slot. The bolt 228, like bolts 84 and |28, has an annular groove or recess (not shown) in which a setting screw or bolt 93 (like that previously described in connection with the two modifications) operates to prevent longitudinal displacement of the bolt and as a setting screw for fixing the manipulating bolt 228 in any adjusted position;

The slide block 221 has a horizontally extended bore or shaft bearing 233 in which a shaft 234 is rotatably borne. This shaft is suitably fixed against displacement in its axial direction and provided with a driving gear 235 suitably Vkeyed or otherwise ixed thereto. A portion 236 of reduced diameter and a shoulder flange 231 on the shaft serve to receive and position a turn spacing or wedging wheel 240. This wheel is suitably locked to the shaft 234 in the same way as the wedging wheel |40 of the previous modication.

This spacing wheel like those of the rst two modifications has a conical flange 240a flaring outwardly toward the slide block 221 and terminated in a sharp circumferential edge 2401 The fiat end surface 240e faces the outlet end 2|8 of the tube 2 I6 and is closely spaced relatively to the tube, only sufficient clearance being allowed to permit free rotation of the wheel 240 with respect to said tube.

Both the gear 223 for rotating the tube 2|6 and the gear 235 for rotating the shaft 234 and the wheel 240 thereon may be suitably driven from a common source. In the embodiment shown, this driving means. comprises; a dri-.ving motor M suitably supported. fromf'the base B and having a drive shaft. Z50.. shaithas a gear 25 If keyed thereto which. meshes with a. suitably supported idler gear 252.. The idler gear 2525 also. meshes with the gear Ztl", sothat rotan tion. oi. shaft 25D imparts. rotation td the gear 235 and consequently sha-it 2341 and. the spacing or wedgingwh'eelf 2li-ll".` .Theshaft 25.01 also,y has a second.A gear: 2532 keyed or otherwise iixed thereto which meshes directlyv with the gear 223i on: the sleeve Zl so.' that drive. of shaft. 250 directly ro.- tatesY the sleeve 2 IlBI.. Y y

Means are providedk for automatically feeding theclosely Wound predetermined length of coil to this spacing attachment. Tothis-L end, a chute` or slide 215 inclined to the horizontal is' provided and?v suitably supported on= the base B`- by the bracket 216. The bottom face 2155i: of this chute is-y inclined to. the horizontal both in; the directionperpendicular tothe axis of the bore of the tube 21:15' and al'soinclined to thel horizontal in a direction along the line of theK axisVl of the tube ZIB. At` its lowermost corner 216e, this chute is provided witha tubular outletZH which is so posi-- tioned as tolieconcentricl with and'V directly in front of the inlet opening of the tube 2161. The bore-of' the tubular outlet 271 is so admeas'uredas to permit the closely Wound coil segments tomovetherethroughand into the mouth of the tubular sleeve 21E. TheSe coil seg-ments maybe pushedvby. handif'rom the chute 2'5` into the turn spacing attachment or and preferably should be fedautomatically thereto from the said chute. Automatic means for effecting the: required feeding may comprise simply a vibrating attachment forshaking the chute, botl'r vertically and in a -dire'ctionparallel to the axial bore of the sleeve 21S. Means for eiiecting'such shaking orY vibration comprises,Y in thel embodiment shown, a rotatable cani` member 280' carried on a shaft 28|" rotatablyl supported" in a bracket 282 from the base B. A cam follower member 29D is suitably supported from. the bottom of the. chute 21'5 in the path of' rotation. ofn the cam 288: so that,y when the latter is rotated, its engagement' with the cam fcllower vvill cause. the chute to receive the required vibration or shaking just' mentioned.. The' shaft 281V carrying the cam '.Silmay be suitably' driven byV the' agency of 'the gear 285 meshingf with theA gear 286 on an extension driive. shaft 2^8`1of the. driving motorM. Operation' ofthe device 'just described.'v is substantially as follows :j A. plurality of closely wound coili segments are placed in the chute; 275 and' the-motor M4 startedv` after the turn spacing Wheel 24U has been adjusted to produce the required pitch of' the. coil'. The. shaking action of' the chute guides the closely wound coils therein, 'one ata time, toward' th'eoutlet 218 and' from there' into the rotating tube 216 of the turn spacing, attachment. Since the latter is rotating,ithe' coily turns are drawn along and forwardly therein emerging from. the exit end.' 21'9 and into engagement with the, spacing Wheel- 2M). The rotation ofthe guide tube 216 causes. the coil' to screw itselfv out of the Wedging' edge 240i) ofthe Wheel Mwith the resultant spacing of individual adjacent turns' as shown clearly atV the right of Fig. T. The coils with spaced turns thus emerging are taken' from1 the turn spacing devicey and di'- rectly used by the operator inthe assembly line. in the mo'diiicationrof'rligs. 5 andi', relativev rotation of thesleeve 216 and the Wedging wheelA 241)" is `such as tof eliminate any substantial' posthe depth of entry oft saidI rotary Wedging meansV bel-.WeenY said turns to vary the extent' of spacing scribed..`

sibility .of 'marring or marking' oi" the 'coil during the.` spaingi ofthe turns.' thereof. Electrical heatingunits made: fromcoil's having the turns spacedi'n the'attachment just described are singularlyf free Voi'- marringior 'other defects and' also universally 'uni-form and accurate their electrical characteristics.

' Itis to benoted that bothv with respect tomodiii-cations o'fliigs.` 5 and? 6? and 7-9' inclusive, the relative adjustment oi the slide block' positioned in 'the slide. slot. isinot large .enough to destroy thev engagement. of the gear teeth of' the idler gears with. those on. the. gears carriedy by the drive shafts. supporting the. Wedging Wheels 21410, M0. In. the' event that. larger displacements of the Wedging wheelsiare desired, the` idler gears |52 or 2-52 will have to? be supported in adjustable re# lationship'. on.l suitablev brackets (not shovinl whichY will. permitthem tol be'v adjustablypositioned to maintain the necessary engagement ot thegears involved. 1 1

It is to be noted further that each of the Wedging Wheels described are. made preferably of oil hardenedv polished steel, although other suitable materialssareialso'contemplated f.

Itis to. be noted, too, that each of' the tubes or; sleeves, lll", .I-[1S,. and' 2:1'62 is: madey of hardened polished steel or'other highly Wear-resistingmaterial; In. the case of tubes H5 and 21.6, the bores llfli and 2m thereot are sol admeasured in diameter as to receive a specifically dimensionedcoil with sufficient. frictionall engagements toy either assist in the rotary'motion of the? coi/11 (-Fig. 5): or to impart rotary motion to the coil asin Fig; 7. This, of course, necessitates the substitutionoir atube with a different diameter foreach diffeiten-tlvV diameter-ed coil which it is desirable to space. In practice; however, thisisl rarely detrimental, because of the fact thatfthefresis-tance coils used by a single manufacturer' generally have a standard diameter; y

The attachment showny in Fig. 3- issomewhat more flexible or adaptable in this respect because the bore 'l2 is larger than that necessary torecei've the coil C. The compensator or adap` ter 'E28 in the formof a sleeve off hardened steelV is inserted into the bore T21V as shown. If thisl adapter has. an vinternal diameter substantially equal: to that ofthe coil Whose turns are to be spaced, it makes it possible to use the turn spac-V ing attachment of Fig. 3 for a plurality of' diferentlyA diametered' coils. Similar types of adapters'could, of coursebe provided for use in' the bores l-l8- ory H8? of the sleeves H6` and 21'6 of the'othertvvo-modications;

' It is to be understood; of course, that various minliiications Within thescopeof" the appendedV claims is' contemplated. There is no intention of limitation tothe exact details shown and de- Wha-tI claimis: i

1'. In a coil Windingl machine whereinA coils having4 closely spaced turns are initially formed, a device for spacing said turnsA from 'each other comprising a guide member supportedfrom said machine' and having a bore tov receive said coils and in' Which the latter move a lixed support, a membermovably carried onsaid support, a rotary `Wedging member carried by said movable member and movable with it transversely of said bore' and adapted to engage between successive turns of; coilv emerging. therefrom to space the same from eachy other and; means for adjusting eiected between said turns, said adjusting means including apart rotatably mounted in said lsupport but ixed against longitudinal movement therein, said part engaging threadedly with said movable member whereby rotation of said part will effect movement of said `movable member relative to said support.

2. In a coil winding machine wherein coils having closely spaced turns are initially formed, a device for spacing said turns from each other comprising a rotatably supported guide memberk having a bore to receive saidcoils and in which the latter move, a rotatable wedging member movable transversely of said bore and adapted to engage between successive turns of coil to space the same from each other, means for adjusting the depth of entry of said wedging means between said turns to vary the extent of spacing eiected between said turns, and common means for rotating both said guide member and said wedging member each on its own axis of rotation.

3. In a coil winding machine wherein coils having closely spaced turns areinitially formed, a device for spacing said turns from each other comprising a rotatably supported guide member having a bore to receive said coils andin which the latter move, a rotatable wedging member movable transversely of said bore and adapted to engage between successive turns of coils to space the same from each other, means for adjusting the depth of entry of said wedging means between said turns to vary the extent of spacing eiected between said turns, drive means and gear means coupled to said drive means and to both said guide member and said wedging member for rotating both said guide member and said Wedging member each on its own axis of rotation by said drive means.

4. A device for spacing turns of a coil comprising a guide member having a bore through which said coil is movable, a rotatable wedging member movable transversely of said bore and into adjustable wedging position between successive turns of coil to space the same from each other, means for adjusting the depth of entry of said Wedging member between said turns to vary the extent of spacing eiTected between said turns, and common means forrotating both `said guide member and said wedging member each on its own axis of rotation.

5. A device for spacing turns of a coil comprising a rotatable guide member having a bore through which said coil is movable, a rotatable wedging member movable transversely ofA said I bore and into adjustable wedging position between'successive turns o'f coil tospace the same from each other, means for so moving said wedging member, common means for rotating both said guide member and said wedging member each on its own axis of rotation, a chute in conjunction with said guide member for leading coils thereto, and `meansifor vibrating said chute to cause feeding of said coils thereon to said guide member.

6. A device for spacing turns'o'f'a closely wound slide block and movable with the latter transversely of said bore.

7. A device for spacing turns of a closely wound coil comprising a guide member having a bore through which said coil is movable, a frame, a slide block movable in said frame, adjustable means for moving said slide block, a wedging member rotatably supported from said slide block with its axis of rotation substantially parallel to the axis of said 'bore and movable with said slide block transversely of said bore, and common means for rotating both said Wedging member on its own axis of rotation and said guide member on its own axis of rotation.

8. A device for spacing turns of a closely wound coil comprising a guide member having a bore through which said coil is movable, a frame in conjunction with said guide member, a'. slide block movable in said frame, adjustable means for moving said slide block, a Wedging member rotatably supported from said slide block with its axis of rotation substantially parallel to the axis of said bore, and movable with said slide block transversely of said bore,A vibratory means for feeding'coils to said guide member, and common meansl for rotating said wedging member on its own axis of rotation and-said guide member on its own axis of rotation and operating said vibratory means.

9. A device for spacing turns of a closely Wound coil comprising a tubular guide member through which said coil is movable, a rotatable Wedging member having a sharp edge arranged adjacent an end of said guide member and adapted to overlap said end with its edge, the axis of rotation of said Wedging member extending parallel to the direction of movement of said coil through said tubular guide member, means for moving said wedging member for adjusting the extent of said overlapping, and means for rotating both said guide member on its own axis of vrotation and said wedging member on its own axis oi rotation.V

10. A device for spacing turns of a closely wound coil comprising a tubular guide member through which said coil is movable, a rotatable wedging member having a sharp edge arranged adjacent an end of said guide member and adapted to overlap said end with its edge, the axis of rotation of said wedging member extending parallel to the direction of movement of said coil through said tubular guideV member, means for moving said wedging member for adjusting the extent of said overlapping, means `for rotating both said guide member on its ownaxis of rotation and said wedging member on its own axis of rotation,

Y and chute means for leading coils to saidguide member.

1,1. In a. coil, winding machiney wherein coils having clcrsely` spaced turns are formed on a mandrel, an attachment for spacing said turns from eachY other comprising'aguide memberl supported from Vsaid machine and having a bore inv axial 'alignment With said .mandrel into which said coils arefdelivered from said mandreha slide frame supported by 'said guide member, a slide member. in said frame movable transversely of said bore, an adjustable rotatable wedgin'g member supported from said slide member andmovable transversely of said bore and adapted to engage between turns of coil emerging therefrom, and meansA for adjusting the position of` said wedging member relative to said bore, said last-'named'means including a member rotatably' supported Vin said frame and engaging threadedly. with. said slide member', whereby rc'mtationlof'said rotatably supported member Will eiect movement of said slide member transversely of said bore.

12. A device for spacing turns of a closely Wound coil comprising a guide member having a bore through which said coil is movable, a frame extending transversely of said bore, a slide block movable in said frame and transversely oi said bore, a rotatable member extending from said frame into and threadedly engaging said slide block for moving said slide block in said frame and transversely of said bore, means to prevent longitudinal displacement of said rotatable member and to serve as a positioning lock therefor, and a Wedging member rotatably supported from said slide block with its axis of rotation substantially parallel to the axis of said bore and movable with said slide block transversely of said bore.

STEPHEN A PLATT.

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