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Publication numberUS1435284 A
Publication typeGrant
Publication dateNov 14, 1922
Filing dateDec 23, 1920
Priority dateDec 23, 1920
Publication numberUS 1435284 A, US 1435284A, US-A-1435284, US1435284 A, US1435284A
InventorsFathauer Alvin J
Original AssigneeFathauer Alvin J
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Coil-forming apparatus
US 1435284 A
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Description  (OCR text may contain errors)

1922 4 snazrs snm L.

Patented Nov. 14,

Zara/11W fig/s.





Batented Nov. 14, 1922.


Fan-sated Nov. id, 1922.

v at;

ALVIN J. m'rnnnnaorcnnvnminn, onlo.

T corn-romaine arraaamos.

Application filed December 23,1920. Serial no. 4532301.

T 0 aZZ whom it may. 00mm Be it known that I, Anvin J. FATI-IAUER,

a citizen of the United. States, residing at Cleveland, in the county of Cuyahogaan 1' State of Ohio, have invented a certainnew and useful Improvement in Coil-Forming Apparatus, of which the following is a fun,- clear, and exact description, reference being had to the accompanying drawings.

'lhis invcn'tionrelates to the manufacture of coils for dynamo-electric machinery and has for its general object. the provision of simple, inexpensive and. compact apparatus by means of Which coils of a great number of shapes and sizes may be formed for armaturesand fieldwindings. Machinery of this nature consists essentially of cylindrical, slotted members, the slots receiving coils of special sizes and shapesfwhich areformed. outside the machine and sul'isequently aplied thereto. Usually these coils approxi mate inform irregular hczragons and they are generally formed by first winding the wire into a plain oblong coil, andafterwards displacing the different parts of such coil so as to produce the particular conformation desired. However the devices heretofore employed for this purpose have generally been I complicated, expensive, and capable of only a small number of adjustinents wl'ierefore',

it is the object of the present invention to provide an apparatus which. shall. be simple, inexpensive, andcapable of a great range of adjustments so that by its use manufacturers and repairers can readily make or repair practically all kinds and sizes of these machines. Subsidiary ob ects are the provlsion of a new and improved type ofv clamp for holding the wire; the provisionfof new and improved expedients for relatively inclining the two sides of the coil; the provisionof im? proved expedients for adjusting the width of the coil-:while further object-standadvauas this description proceeds. I a

In the drawings;accompanyingand form tages of the invention will become apparent ing a part of this application, I have illustrated one embodiment of my invention, wherein Fig. 1 is a perspective view'of the complete machine showing; a newly wound coil in place ready for forming; Fig. 2 is a similar view of the same machine but showin}; the parts separated and the coil formed;

F 3 is central vertical section through g the ma the parts shown in Fig. 1 showin the wire coil. prior to forming; and Fig. 9 is a perspectlve view-of the samecoil after onnin ;l)'escrib ng the parts byreference characters l'and 2 represent a pair of p-arallel support ngrods, oneof which is. mounted so as to be movable bodily toward and from the.

other rod; this being most. conveniently effected by 'p-ivoting the' same upon. an axis whichis parallel to -both rods. The rod 1 is sh am as horiz'ontaland ishere mounted in fixed position by the rigid uprights which rise from the ends of the base 4t. The

other rod, is carriediby the branching arms 5 -5 of the'bracketfi which is pivoted upon theho'rizont'alpivot shaft 7 carried by the brackets 88 that' project from the base. In operation the base f is preferably applied to the topof-a table or pedestal 9', the lOI'flCk ets' 8'8 projecting. forwardly past the edge of'the same as shown in Figs. 3 and 4.

Projecting rearwardly from the bracket 6 at a point adjacent. the pivot shaft is a rigid; arm 12, to the end of which is secured the weight 13. The length of this arm, and,

the magnitude of the weight are so chosen relatively to the weight ofthe bracket. and its attached parts that when the bracket is in upright 'po-sition as shown in Fig. 3' the center ofjgr'avity' will fall at the rear of the shaft 7;.thereby'retaining the bracket in its 'upright position, and when the bra ck'ct is in the inclined'p'osition illustrated in Fig. 4: the center of gravity of the same'willfall outside ofthef pivot shaft ,7 thereby holding the bracket in t hat'po'sition also. At a point between the bracket and weight the arm 15 is formed with a recess in which is pivotedthe rocker 14', apart of which comprises a sleeve 15'; and. pivotedto the base t at the point 16is a threaded bolt 17 passing through said sleeve andhaving at its upper-end a stop nut 18' by {which the swinp'ing movement of the bracket is limited. ft will be understood that other countervailingfdevices'can beem -i i l l i 110 Secured to each of the rods i, 2 and adjustable therealong are apair of coil-receiv ing clamps indicated generally at 2020, which may be of any suitable or convenient type, but according to my preferred species are constructed as follows.

Each of the present clamps comprises a cast-metal base-part, an adjustable jawmember, a latch, and a handle. The base part comprises an apertured portion 21 adapted to be gripped upon its red by the tangent screw 22, there being a fiat topped portion 23 projecting towards the clamp carried by the other rod and terminated by the upstanding rigid jaw 24 whose inner face is square and whose outer face is rounded. Adjustably secured to the upper fiat face of this part is the movable jaw member 25 having its working face parallel to the working face of the fixed jaw 24 and also vertically slotted as shown at 26 for the reception of the latch 27. This latch consists of a curved metal member, pivoted at one end to a pin 28 carried by a flange 29 which projects rearwardly from the part 21; the forward end of the latch swings just inside the fixed jaw 24 and into the slot 26 of the jaw 25 as shown in Fig. 4, so as to retain in place any coil of wire embraced between said jaws. The handle comprises a body portion 30 and two legs 8181 which straddle the latch 27 and are pivoted at the point 32 to the flange 29. Carried by the handle is a spring-pressed plunger 33 which rides upon the top of the latch. When the handle is in the position shown in Fig. 4, this plunger, pressing upon a portion of the latch forward of its pivot, holds the same in closed position, but. when the handle is swung rearwardly as shown in Fig. 3 the plunger engages a shoulder 34 carried by the latch at the rear of said pivot, as a result of which said latch is opened and held firmly in open position until the same is manually restored.

In order to prevent these clamps from rotating upon the rods 1 or 2, which are preferably cylindrical, I employ a spline 36 which may conveniently extend into the space cut away for the tangent screw 22; and in order to assist in adjusting these clamps to measured positions along their rods I have illustrated a rotatable shaft 37 carried by the uprights P=3immediately at the rear of the rod 1 and provided at one end with the crank 38. The opposite halves of this shaft are formed with right-hand and left-hand threads, respectively, as indi cated at 39-89 which are screwed in suitable holes in the flanges 29 so that as the crank 38 is turned the two clamps approach or recede from each other, maintaining always equal distances from the middle of the rod. The clamps which are carried by the movable rod 2 are adjusted separately in accordance with the positions assumed by the first clamps.

This rod 2 is also preferably pivoted about an axis other than the pivot shaft 7, in order to adjust the pitch of the coils. In the present embodiment this rod is merely pivoted upon its own axis in the sockets formed in the ends of the arms 55, and its movements are preferably effected, limited, and adjusted as follows. Rigidly secured to the middle of this red is a yoke member 40 having at the one side a depending lug 41 and at the opposite side a forwardly projecting handle 42. The bracket 6 carries an upstanding finger 43 which projects between this lug and handle in such wise that when the movable bracket is upright and the lug 41 engages said finger as shown in Fig. 3 the curved outer face of one clamp jaw 24 will project beneath the complementarily curved face of the corresponding jaw of the opposite clamp, Adj ustably threaded in the handle 42 is a screw 45 which limits the rocking of the rodin the opposite direction as shown in'Fig. 4, its end engaging the outer face of the finger By this rocking movement added to thespreading movement I am enabled to reproduce the spread and pitch of coils made by practically all other machines.

For operating this coil former I preferably'provide a treadle carried by a suitable floor bracket 51 and connected to the handle 42 by means of a suitable draglink 52, preferably including a turn-buckle to permit the necessary adjustment. It will be noted that the first effect of depressing the treadle will be to rock the rod 2 about its independent pivot by an amount permitted by the adjustment of the screw 45, after which the entire bracket will be drawn to the osition illustratedin Figs. 2 and 4. 46 denotes a lock nut for holding the adjustment of the stop screw 45. It will be understood that the rocking movement of the rod 2 may take place about some axis other than its own, within the requirements of this machine, although the construction I have illustrated is the simplest and most practical. l have illustrated a simple device for holding the treadle yieldingly in ele vated position so as to prevent the weight of the .treadle and its drag-link from rocking this rod outwardly during the time that the apparatus is in closed position as shown in Fig. 3. The means here illustrated consists of a cord 54 and counterweight 55, the cord running over a pulley 56 which is attached to the underside of the table on which theapparatus rests. The effect of this counterweight, or other means, is sochosen as merely to overcome the weight of the parts sufliciently to hold the rod 2 in the position described, but without restoring the bracket and attached parts to; their 1 ,aaaesa upright positions after the same .has once beendcpressed. This counter-weighting 1nfluencc accordingly operates only in con-l junction'with the rocking effect of this shaft and is typical of numerous other devices and expedients which could .be' employedto accomplish the same result.- p L The pivot shaft 7 is preferably made oi: considerable lengthso as to project horizontally at each side of the-machine and-slicl ably mounted thereon area pair of brackets (SO to which are pivoted the upright arms 6l61. 1n the present embodiment each of these brackets consists of a U-shaped' member having its sides 62'apertured for the reception of theshaiit, accidental" long tudinal movement ot the'bra'ckets being prevented by means of collars63 63 clamped to the shaft-between the sides. Secured to the upper ends of the arms 6161fare the encbclampswhich here consists of a semicir cular, flat, base-plate 65, having at its straight marginv a. right angledjaw 66, in combination with a movablejaw 67 adjust ably clamped to the forward "face ofsaid base plate. With the arrangementdescribed. these jaws are preferably substant1allyup-.

right when theapparatus is in closed position as shown in Fig. 3, although the pivotal" connection between the brackets 60. and shaft 7 enables the end clamps to accompany the spreading movement of the coil as indicated in Fig.'4i, while the arms 61-61 being pivoted to the brackets upon axes perpen dicular to'the rods, are enabled to approach each other as the coil is shortened. The base plates are preferably secured to the arms 61 in such wise as to be adjustable through the are a shown in Fig. 4, thus enabling the end portions of the coil'to be twisted to difierentian les. if desired; but: ordinarily these endclamps have. no tuuc tion whatever excepting to assist in thelongitudinalpositioning of the coil,'inasmuch as the stretching of the coil 'eltitselt.

affords substantially the same configuration as is obtained by the use of these clampstuir less these clamps are usedin'an inclined position for such special purpose. In the ordinary use of the machine it is customary to remove one of these members together:

with the movable clamp portion of the other member, retaining only the base-pliateas measuring stop. A. check pm 68 is employed to prevent these arms moving outwardly be-'-' yond the vertical.

The wire. is first Wound in a plain oblongcoil as shown inFio. 8 with round ends A p 5 p A, and straight sides B, B, the latter-lying 1n the same plane and spaced-sl ghtly apart. The terminals D D are brought outat the proper points. and in the proper number for" the 0011 111 question, and the wires'aire taped,-

clippe'd, or cemented: together in any suitable manner. Oneendofthis coil: is then applied" very easily accomplished by proximityiof the clamps and the curved end 2401. the upper constitutes a" direct :guide into the" open rnouthof the lower. The construction of the latches enables them to be' swung entirelyout ofthe f way 'while this is being done, andalso to be; moved into. securing position without obstructionhfrom the' opposite clamps The, r movable jaws'ofithe clamps are seti-to. the

proper width either before orafter 'applyingQSd the coil. The stop scr'ew dais also-set to at ford the'jcorrect' pitch of the coilgwhi'ch depends upon the size of the machine? roiwhich:

it is designed and also the width between the p r two sides. i 'lhetread'leisthen depressed and the coil drawn to the shape shown in- Fig. It

removed fromthe clainps'prior to. releasing;

thetreadle afterwhich the movable part-is to receive another coila v The lateral adj ustability of the clamps ena ables the shaping of coils of a great range sizes the angular adjustment enal'iles' the shaping of coils-for machines "of varyingdiameters; .whiletheshape and construction of the clamps themselvesenable's therapid and convenient operationfiof the machine. Also the action of fastening the latches is.

accomplished a motion which tend sloo merely to; close the machine which cannot inure the 0011 since the machine is already closed and the action of opening the latches is accomplished by a motionwhich tends merely to open the parts still wider, which.

cannot injure the coilv since the' parts. areal readyat their "open. position.

, It will be understood, howeverthat; many:

and great changes ingdetail can bemade.

within the scope-,ofmy invention and Ijd'oillO i not limit mysellfln any W158; eXceptJas spe -f-' cific ally stated; in the annexed. clanns.

Having; thusw'described y: invention, 7

what I claim is:

1; In a coiliforming binatio'n, a pair of parallel supporting rods,

meanshinging said rods togetherjtor relative movement about an axis at" one side thereot and-parallel the1-eto.-, au d a hair of.

coil receiving; clamps-secured to each "rod and'adjustablejtherealong. W I i 2. In acoil forming" aj-pparatus; in col bination, apair of parallelsupporti-ng rods,h

means vbringing said rodstogether for r'ela tive movement about an axis-at onesi'd'e thereof and parallel! theretofand a'pair ot co l receiving clamps secured to each Erodi} and;adgustabletherealong, one of said ro'ds beih x I rotatable about an axis foth'er than i sa d PlVQh axis so as to to coil" 1 '3'0 apparatus in com- I116- 6 5 swinging a pitch otherthan that which corresponds to such first pivot axis, and coil receiving clamps carried by said rods.

3. in coil forming apparatus, in combii nation, a pair of paral el supporting rods,

one of which is mounted tor swinging movement toward and from the other about an axis located at one side of and parallel to both rods, and a pair of coil receiving clamps secured to each rod and adjustable, therealong.

1-. In a coil forming apparatus, in combi nation, a pair of parallel supporting rods, one of which is mounted for swinging move- -ment toward and from theother about an axis located at one side of and parallel to both rods, and one of which is also rotatable about its own axis between predetermined limits, and coil receiving clamps secured. to said rods.v y

5. In a coil forming apparatus, in combination, a pair of coil receiving clamps 'mountel for relative swinging movement toward and away from each other, one of said clamps being.independently pivoted for rotation about an axis other than that of such swinging movement, and means whereby the movement of a singleclamp in either direction will effect both such rotation and such sw'vinging in a corresponding direction.

6. In a coil-forming apparatus, in combination, a pair of parallel supporting rods, one of which is fixed and the other of which is movabletoward and from the first rod bymovement about an axis which is parallel to both rods, a pair of coil receiving clamps slidably mounted on said first rod, a rotatable shaft parallel to said first rod. and having rightand letthand threaded portions engaging said clamps respectively, a pair ,otclamps movably mounted on said second rod, and means for seeming themin place thereon.

' 7.111 a coil forming. apparatus, in combi nation, a fixed part having coil receiving clamps, a movable, part having coil receiv ing clamps adapted to swing toward and,

from the first part, and a counterweight attached to and movable with said s cond part and adapted to hold the same in. stable position at either extreme or its movement.

'8. In. a coil forming apparatus, in combination, a pair of relatively .i'llOVttlQlG meinbers, coil receiving clamps c. rried thereby, there being a clamp on each member oppo site to that on the other member, an adjust ing screw for variably limiting the separation of said members, and countervailing means opera-ting across the center otjmovement for securing the relative position of the. memb rs at both extremes of such mo vement.

9. In a nation, a

coil forming apparatus, in combifixed rod, a bracket mounted tor movement toward and from the same upon an axis parallel thereto, a rod car ried by said bracket parallel to said first rod and ]0Ul'11LlCl tor rocking movements upon its own axis, means for adjusting the degree which is independent of the angle or amountof movement between said members. 11. In a coil forming apparatus, in combination, a fixed rod, a bracket mounted for swinging movement toward and from the same upon an axis parallel thereto, a rodcarried by said bracketparallel to said first rod and journaled :for rocking movements upon an axis other than the pivot axis, means for adjusting the degree of swing ing movement and off rocking movement, coil receiving clamps carried by both rods, and a single operating member connected to said second rod and adapted by a single actuation to produce both said swinging movement and said rocking movement. I

12. In a coil forming apparatus, in combination, a horizontal fixed -rod, a bracket mounted for swinging movement toward and from the same, a second rod journaled in said bracket parallel to said fixed rod, means for limiting the swinging movement of said bracket, means cooperating with a part of said bracket for limiting the rotation of said rod in each direction, a treadle operativcly connected to said second rod, means for normally holding said. second rod atone limit 0 s rockingmovement, said treadle being 'anged when depressed first to rotate said second rod to the other limit of its rocking movement and then to move said bracket to the extreme'ofits swinging movement, and coil holding clamps carriedby the respective rods. I

18. in a coil forming apparatus, in combination, a pair or" members mounted for movement, one toward and from the other, an upwardly-opening coil-receiving clamp carried by each niiember and arranged on difii'erent levels, each clamp having a fixed jaw with a convex end whereby opposed clamps may be brought closetogether, the end of the upper clamp constituting a guide into the aw of the lower clamp, and a latch for each clamp movable into and outcl posi-.

tion above the same in all positions oi said. members.

i 1%. In a coil forming apparatus, in combination, a pair of members mounted for movement, one toward and from the other, an upwardly-opening, coil-receiving clamp carried by each member and arranged on different levels, a movable latch adapted to coverthe top of each, clamp, means for moving said members bodily toward and from each other,- and means for inclining said clamps, one relatively to the other.

15. In a coil forming apparatus, in combination, a horizontal rod, a bracket pivoted on a horizontal "axis below and inifront of said rod, asecond rod carried by the free end of said bracket parallel to said first rod, one ofsaid rods also being angularly' movable relatively to the other rod, a pair of upwardly-opening, coil-receiving clamps carried by each rod and projecting toward the other rod, said clamps having rounded ends and being so mounted that when the'bracket is swung toward said first rod, one set of clamps will lie slightly above the other set, with the rounded ends thereof forming a guide into the open mouthsof such other set, a counter-vailing device operatively connected to said bracket and adapted to hold the same rigidly at each extreme of its movement, and an operating member adapted to displace said bracket away fromsaid fixed rod and also to rock one rod relatively to the other.

16. In a device of the character described, in combination, abase member having an upturned end at the one part and an upstanding flange at the other part, an upwardly curved, arcuatelatch member pivoted to said flange and swingingjust inside said upturned end, a movable jaw adjustably secured to the top of said base member'and cooperating with said upturned end to define a coil-receiving slot, said movable jaw being notched for the reception of said latch, and

means for opening and closing said latch and for holding it closed.

'17. In a device of the character described, in combination, a base member having'an upwardly facing surface terminating in an upturned end constituting a aw, an upwardly r'zurved, arcuate latch member pivoted to said member at a point removedfrom said jaw and swinging just inside the same, a movable aw ad ust-ably secured to the top of said base member and cooperating with said first jaw to define a coil-receiving slot, and ahandle pivoted to said base member and having a part overlapping said latch,

to hold it closed.

1 8. In a device of the character described,

Said'base member at a point removed from said aw and swingingjust inside the same,

a movable'jaw. a'djustably secured to the top of sa d base member and cooperating with.

said first jawto definea coilre'ceiving slot,

and a handle pivoted to saidbase member upon an axis parallelto the latch pivot,said

handle having a spring-pressed part moviable along the top of'said latch andadapted (I when moved forward of. the latch pivot to .close the latch and hold ityclosednor' when moved to'the rearof the latch-pivot to open the latch andjhold it open.

19.In"adevice of the character described, a j in COIIllOlIlfltlOll, a base member having upturned end at the one, part and an up- Q I l standing flange at the other part, an up wardly curved, arcuate latch member pivoted to said flange and swinging just inside said upturned end, a movable j aw adjus'tably se cured to the topof said base member andfcor i a coil-receivingslot, a handle having-a pair of legs straddling said latch and pivotedto, opposite sides of. said flange, and a spring operating with said upturned end to define pressed member carried by said handle and riding on the convex edge of said latch.

.20. In a device of the character described,'.

in combination a base member having at one o end an upturned jaw whose lnner face is flat and whose outer faceis rounded about a;

horizontal axis, a, swinging latch member side the same,--a"nd a handlecarried by one of said members and operatively engaging .90 pivoted to said base member at a point r'e-Q; 1 moved from said aw and swinging' ust in In testimony; whereof, hereunto afiix my signature.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2841200 *Feb 4, 1955Jul 1, 1958James Equipment Company IncApparatus for spreading a coil and twisting the sides thereof
US4558580 *Jun 19, 1984Dec 17, 1985Malcolm OttyCoil shaping apparatus
US4646550 *Oct 16, 1985Mar 3, 1987King Industrial Products Co., Inc.Coil bending machine with floating spreaders
US4964291 *May 5, 1986Oct 23, 1990Automated Coil Systems LimitedCoil shapers for coils of rotating electric machines
US5479810 *Dec 9, 1994Jan 2, 1996General Electric CompanyMethod for producing form wound stator coils
U.S. Classification72/295
International ClassificationB21D11/10, H02K15/04, B21D11/00
Cooperative ClassificationH02K15/045, B21D11/10
European ClassificationH02K15/04D1F, B21D11/10