US2154792A - Coil winding machine - Google Patents

Description

April 18, 1939.

K- H. WEBER OIL WINDING MACHINE Filed Oct. 24, 1956 9 Sheets-Sheet l A umm l 1E u 4 u All 11 MIL '\S ,Hammam Illill )I ll III Ill y [h Y y "III llllll Il lllllllllllllllllllll Il lllll II 7'0 SPOOL /N VENTO/g KAEL H, WEBER April 18, 1939. K H WEBER 2,154,792

COIL wlNDING MACHINEA Filed OG. 24, 19.36 9 Sheets-Sheet 2 /N VENTO/e KAEL H WEBER Y Ay@ TORNE lCOIL WINDING MACHINE Filed Oct. 24, 1936 9 Sheets-Sheet 3 /N VEA/TOR KAEL H WEBER .4 T TORNE fpril 18, 1939. K, H* WEBER 2,154j32 COIL WINDING MACHINE Filed Ooi. 24, 1936 9 Sheets-Sheet 4 INVENTOR KAEL H, I/I/EBEQ ORNEY April 18, 1939. K. H. WEBER 2,154,792Y

COIL WINDING MACHINE Filed Oct'. 24, 1936 9 Sheets-Sheet 5 FI@- Q KA EL H, WEEE/2 In' /N l/NTOR April 18, 1939- K. H. WEBER 2,154,792

COIL WINDING MACHINE Filed Oct. 24, 1936 9 Sheets-Sheet 6 /N VENTO/e KA EL H. I/I/EBEE By @my TORNE K. H. WEBER April 18, 1939.

COIL WINDING MACHINE Filed Oot. 24, 1956 9 Sheets-Sheet '7 KAEL H. [f1/EBEE ATTORNEY.

April 18, 1939. K. H, WEBER 2,154,792

COIL WINDING MACHINE Filed Oct. 24, 1936 9 Sheets-Sheet 8 l 65@ N l,"lOeL 1:1 l/F "l/ z 1 z Iii. IlIIIIIIIIIIIIIIIIIIIII]Illlllw` A TORNEY /f/J EL H. ffl/555e April 18, 1939- K. H. WEBER 2,154,792

COIL WINDING MACHINE Filed Oct. 24, 1956 9 Sheets-Sheet 9 y n l /N VEA/TOR KAEL H. WEBER BY ATTORNEY Patented Apr. 18, 1939 *UNITE-D STATES 's-@ATENT GFFEC 38 Claims.

.This finvention relates to coil-Winding machines, more particularly to machines `Which -automatically wind coils 4on forms `for ,use in .fabricating `armatures for automobile generators 5 ...or the like.

To obtain an armature suitable vfor rotation .atfhigh speeds-the Weightdisposed around the -aXle y-must b e carefully balanced, so that the center of lgravity of themass may be as near lo aspossiblefto-the Aaxis of-,rotation of thearma- ,ture. Heretoforaarmatures with coils YWound ldirectly on the core either' by, machine or manually, have been used but, due tothe overlapping cf the coils'aswound in the slots by the Winding ldfmachine (ormtu'iually),V a larger mass was po- -fstioned yon one side of theaxle than on the other, Ygiving .an unbalanced condition, which was remedied byreducing the-Weight on the opposite side by boring holes in .f the laminations goei-,the core. The vold method was lempirical and resulted 1in somewhat unbalanced armatures which Were unsuitable tor-rotation at higher eSD6dS- Eurthermorethe electrical characteristics of .25 the directly-wound armature Were unsatisfactory, vbecause theoutput of themachine Wasunsteady. The diilerentamounts of yWire used in the .several coils of the armature affected the output and made it vary within Wide limits. 30v Those coils that were Wound iirst had aminim-um .ofwira While those-,wound last' had a maximum ipfzvvircar caused by the increased amountA of Wire .usediniorrning the inactiveend portions of the `windings, the rlast windings having greater lap 55, than the. earlier ones. The voltage generated in u each coil `during rotation wassubstantiallyethe .samebecause-each coil had an active portion Aof Iequalsize cuttingyux lines but the output f or= the individual coils, as-collectedby the com- .40 mutator, fluctuated considerably due to the variations the resistances `and the resulting lun- ,.equal ,poiyerlossesof the several coils. This lvariation inoutput is undesirable. The efciency Yof.,thernachine is Vapprecably decreased bythis v1,5, uctuation.

On the other hand, the; form-,Wound armature has, aY balanced characteristic, bothv mechanically -and electrically, becauseevery coil has substanl.tially Y thesaymeamount of Wire in its makeup.

45l) ,The disposition ofthe weight of the coils will, therefore, beuniform, so thaise-mechanically ybalancedA armature will be the result. An arma- H,ture.ofthiskind, Will rotate `With ra minimum of ,vibration athighfspeeds becauser thev center of y55gravity .of .the ,mass is substantially located on (Cl. L10-92.2)

the axis of rotation. Furthermore, the output of `the machine will be more uniform because the electrical resistance of each coil is substantially the same. The IR drop and the 12R losses Will be the same in each of the several coils. 5 Itis, therefore, clearly advantageous to use a form-Wound coil in fabricating the armature to obtain the results outlined above. By careful design of the form, it has been found that further advantages are to be obtained by the use 10 of this armature Winding system. The Winding form has been contoured to shape the individual coilsso that a minimum amount of Wire is used `in their makeup and at the same time the coils are adapted to lit together in assembly so that 15 a-rninimum of space is necessary in a direction longitudinal of the shaft to form the inactive coil ends. This allows the use of a shorter armature shaft.

To fabricate these armature coils most eflicientlymechanically and with the smallest cost, an automatic Winding machine has been evolved, which will Wind wire from a spool (a multiplicity of wires may also be used to form the coils) into coils to obtain the advantages outlined above. Uniformity and speed are essential in this automaticmachine, which Will issue the coils held in form by clips ready for taping.

`It is, therefore, a principal object of this invention to provide an automatic coil-Winding machine adapted for continuous operation which will Wind Wire from a spool into a form, cut the completed coil loose, and issue it from the machine held together by clips.

It isa further object of this invention to pro- 5 vide an` automatic coil-winding machine adapted for continuous operation which is capable of being operated by unskilled labor whose services will, be simple, consisting oi feeding material into .the machine.

It is a further object of this invention to provide an automatic coil-Winding machine which will utilize Wire most efliciently by using all the `Wire taken from the spool in fabricating the `ends sothat a minimum amount of Wire will be utilized in the formation of the coils and providing, at the same time, a coil Whichwill subsequently be shaped to be tted into the armature slots to nestle together on the armature v55 ends to give the most efficient utilization of space and material.

Other objects and advantages of this invention relating to the arrangement, operation and function of the related elements of the structure, to various details of construction, to combinations of parts and to economies of manufacture, will be apparent to those skilled in the art upon consideration of the following description and appended claims, reference being had to the accompanying drawings forming a part of this specification wherein like reference characters designate corresponding parts in the several views.

Figure 1 is a perspective view of the automatic coil-winding machine, looking at the rear, show ing the cam shaft in its relation to the main shaft.

Figure 2 is a perspective view of the machine taken from the front side.

Figure 3 is a plan view of the completed coil as it issues from the automatic coil winding machine.

Figure 4 is a rear perspective view, showing the details of the cutter mechanism.

Figure 5 is an elevational view of the stationary element of the winding form. Y

Figure 6 is a plan View, partly in section, taken along the line 6-6 of Figure 5.

Figures 7 and 8 are side elevational views of the winding form, showing the two halves of the form in operable position.

Figure 9 is a side elevational View of the Winding form, showing the form split and the coil removed therefrom.

Figure 10 is an elevational view of the shaft of the movable half of the winding form showing the guide means to maintain the shaft in a predetermined position.

Figure 11 is aI view similar to Figure 10, showe ing the guide in use during the lateral movement of the movable half of the winding form.

Figure 12 is an end elevational view, looking in the direction of the driving shaft, showing a locking means to hold the driving shaft in a predetermined position.

Figure 13 is a View similar to Figure 12, showing the locking means in` disengaged position.

Figure 14 is a view taken along the line |4-l4 of Figure 12.

Figure 15 is an endrelevational View of the Winding form, showing the xed half thereof and its relation to the clamp-closing levers.

Figure 16 is a view similar to Figure l5 with the clamping levers removed, showing the action of the wire te-nsion upon the movable clamping means.

Figure 17 is a view similar to Figure 15 with the clamping lever removed, showing the manner in which the clamp is released to free the leading ends of the coil.

Figure .18 is a view similar to Figure 15 with the clamping lever removed, showing the position of the clamping means just prior to the action of the clamping lever as illustrated in Figure 15.

Figure 19 is a plan view of the reciprocating vguide and cutter means, shown generally in the perspective view in, Figure 4, the cutter means being in a retracted position.

Figure 20 is a view similar to Figure 19, showing the guide and cutter means in operable position.

Figure 21 is a view similar to Figure 19, showing the guide and cutter means in extended position with the cutter means being fully actuated to sever the trailing ends of the coil.

Figure 22 is a view taken along the line 22-22 of Figure 20.

Figures 23, 24, 25 and 26 are side elevational views of a brushing device, cooperating with the reciprocating guide and cutter means illustrated in Figures 19 to 22, showing the action of the brushing device for removing the coil positively from the winding form while being reciprocated by the guide and cutter means.

Figures 27 and 28 are end elevational views of the mechanism for attaching clip devices into holding position with the coil in the winding form.

Figures 29, 30, and 31 are plan viewsyshowing the details of the mechanism for flexing the clip and snapping it into position on the coil.

Figure 32 is a side elevational view of the mechanism illustrated in Figures 29, 30, and 31.

Figure 33 is an end elevational view similar to Figure 32.

Figure 34 is a plan view of a clip-holding de-V vice to maintain the position of the clips in the magazine during the actuating period of the clip-attaching mechanism.

A brief description of the coil winding machine will be given to outline the general scheme of operation. As pointed out above, a coil must be provided with at sides having theY smallest transverse dimensions possible to fit into the armature slots and with end sections of suchV contour as to use the least amount of wire possible and to occupy the smallest possible space longitudinally when the completed coil is fitted into the armature. A winding form is provided to shape the coils to this contour, the winding form being split at a mid-point for displacement of one of the parts of the form, facilitating the removal of the coil upon its completion. The winding form is preferably in the nature of transverse face plates positioned upon aligned stub shafts and cooperatingrtogether to form a peripheral groove in which the Wire is to be wound.

One of the stub shafts is mounted for rotation in a fixed position and the other stub shaft may be adapted for longitudinal movement to allow the splitting of the Winding form. The stub shaft, which is adapted for longitudinal movement, is provided with proper actuating mechanisms to move the two face Vplates into cooperation in timed relation in a cycle of operation. Pins and other holding members are fitted to the face plates and to the stub shafts to hold them in predetermined positions both while stationary and rotating. Preferably power for rotation is supplied to the fixed stub shaft, the cooperating stub shaft rotating simultaneously therewith through the medium of pins.

The wire to be used in winding coils is preferably fed to the winding forms in double strands and is taken from feed spools in any well known manner. ening and tensioning devices as is well known in the art. They are then led tothe rotating wire form and wound into the peripheral groove, as described before, in which the wires are formed into a completed coil of the desired contour. To control this operation, one portion of the Winding form, preferably that one which is longitudinaliy stationary (adapted for rotation only) is provided with a laterally extending portion rotating simultaneously therewith. On this laterally extending portion, a clamp means is posi- These wires are led through-straight-V irai-543792 rtioned- .to holdgthe leading -endsrof-the v.wire f coil a asit is. beingtaken from the :wire 'feed spools.

When: the .wire form is'beingrotated, the clampmeansis adapted to beA displaced vbythe tension ofthe .wire at the beginningofthezwinding cycle. vThe clamp means'remains'in this displaced posiktion until the windingy form has rotated a predetermined-number-.o-f turns, at .which time, the Vclamp means is adapted to be released. It then returns tothe initial position through the action of a resilient means. Thisaction releases the 'leading' ends `of the coil andallowsnthe clamp means to berfree to receive that-railing ends. of the coil after therequisite number of turns have been placed in the peripheral groove of the winding form. After theproper number of turns have been placed in f thewire vrforrn, .the v rotation stops `and the coil is held inafixed positionto'allow an vextraneous guide and-cutter means to cooperate with the clamp means. By lateral movement of the extraneous means, the YWireffrom the spools is displaced into alignment withl the clamp means, the clamp means being Yactuated-.at this time, to obtain a new grip upon'the leading end of the `next consecutive coil-to-'be1woundandupon the trailing end of the coilwhose-win'ding has been just completedthe two ends being still connected. After the wireis tightly heldin the clamp means, the cutter :severs the wirebetween the clamp means and the coil; forming, by this operation, the trailing'ends of lthe coil, the clamp means still retainingl itsI ygrip on the leadingends of the next consecutive coil.

Simultaneously with the clampingand cutting operations, means extraneous of the wire 'form attach a-pair of holding clips uponthe Yflat sides of the completely woundV coil, still positioned in the wire form to hold the turns of the completed coil in proper relation afterfremoval from the wire form. The wire form is then split andthe 'iinished coil, held together by the clips, is rel- Vmoved from the machine. After-thisI the wire form is again closed, and a new-cycle of operation lis'ready to begin.

Drive mechanism The coil winding machine `is drivenby two shafts in parallel juxtaposition, one being a broken main shaft-40 for intermittently rotating Aa split winding form, anda counter-shaft 4| Aprovided withsevera-l rotating cams to actuate the various supplementary operationsof the machine in timed relation with the rotation of the winding form. The main shaft'140 is broken adjacent its mid-point, the twoportions oi the shaft being mounted in alignment. One portion l40A is mounted for rotationl only while the complementary portion 40B is mounted both for vrotation and for longitudinal movement. The relatively fixed-portion of the main shaft `40A is journaled in bearings 46C and '140D which are positioned upon a bracket 42 which is iirmly mounted by means of screws 43 upon base member 44. The complementary portion ofthe main shaft 40B is journaled in the bearings 40Ey positioned in the uprights of abracket 45, also mounted by means of screws upon the base member 44. At the point where the mainshaft 40 is broken, a winding form F is provided as will be described in detail hereinafter.

The counter-shaft 14| may :be journaled in kthree'c-yearings. MA, 4IB,;,and 4| C tofhold it in parallel 'alignment-With, themaingshaft 40. Those bearings are: positioned upon :suitablezmounting brackets :which fare lmounted upon ithe lfbaseg. ibyeanyi convenient means as, for-gexample,;senews.

.Adjacent the 'exterior upright of thegmonnting :bracket 42, a -pulley-flywheel v46, preferably of integralconstructiomgis mounted to rotateupon t5 :the Vshazft AOA, a sleeve ,extending therefrom through the :bearing 40D ito rotateV the :driving portion 41 of a saw-'tooth clutch. Power is ,aap- :plie'ld tof: the flywheellby any convenientmeansfas i-.or example, by a belt cooperatingwith:themulim ley 146, the :belt being :moved by any 'primary -source of power, ran electric motor Aor L theIlke. vThe 1 pulley-iiywheel 46 drives. a gear tra-in f ,('not vshown in detail) enclosed fwithina housing 25.48.

'.The.r gear train transmits power from L thegpulley- H5 vflywheel to the counter-shaft4 lso that ;the1counter-:shaftmay be driven at a definitespeed ratio with regard to the main shaft. ,-Anyfrgearratio may be used, the main shaft preferablyxrotates twelve `revolutions per Vone `revolution ,o-fgtheO counter-shaft.

'I'hexdriving portion 41of the sawtooth. clutch is adapted for constant rotationinasmuchfas itis xed toxthe pulley-iiywheel 45. The olrivenportion 41A of the saW-toothclutchis adaptedtobe moved:.along #the main vshaft 40A into` cooperativev relation :with the. driving portion'. to transmit Ypower to vthe main shaft :from .the pulley-,fly-

wheel. This. movement is obtained by theaction of a cam-wheel 49,'mounted upo-nthe counter-aw jection (not shown) .uponlthedriven portionzf41A35 .of the saw-tooth clutchthrough ai cam surface which moves the vdriven portion of 'the olutchmut of vcooperation with the `driving portion. iA1second lever 50A also cooperatesA with the projection to Y-holdithe driven-portion-41Aof the sawetooth M0 clutch in, a fixed position.

Resilient means urge thedrivenportion into cooperation withV the driving portion, except-when interfered and prevented by the interactionof the projection on the. driven portion and. the Cam surface on the levers 50. This clutch const-ruotion is well known inthe-'art and need not be described in further detail.

.Simultaneously with the action of the clutch vdisengaging mechanism, a main shaft lockingde- 5,50

vice, illustrated in Figures 12,'13 and 14, is actuated to hold the main shaftin a fixed position for selected periodsI of time. A cam 55, mounted on the counter-shaft 4l, moves the bar,56 in a longitudinal direction by means of the riderg 51, the bar having a projection.,56A to cooperate with the notch 51 in a sleeve 58 xedlymounted-upon the main shaft 40A. The bar .55 is po- .sitioned in a guide 59 which isflrmly attachedto any convenient means to the frame of the maa6() chine. The interaction between the projection 56A and notch 51 locks the main shaft firmly in position. against rotation. Dametrically opposed from the-notch 51 isa second no-tch which cooperates with the lever 6I to preventg overrunning of the 'sleeve 58 and' therebyhelp-ing toalign the slot 51 in the projection 56A for the locking operation. l

-As pointed out before, the main shaft 40"is broken adjacent its midpoint, the ends/of "-the -main shaft portions 40A and'MlB cooperating at that `point by having two Vtransverseuace 4platesdeiining a winding form F lmounted upon the cooperatingfends^as `will-be "describedi'here- .inaf-ter. The fmain shaft :complementary-porq tion 40B is driven by having power applied thereto from the portion 48A. This power transference is accomplished by means of pins 65, one of which is centrally located on the face plate and the second is eccentric, both being preferably mounted upon the portion 40A of the main shaft. The pins 55 cooperate with aligning apertures 66 (Figure 9) in the face plate mounted upon the complementary portion 40B of the main shaft.

In order that the face plates defining the winding form F and mounted upon the portions of the main shaft, may be separated, the complementary portion 40B of the main shaft is adapted to be moved in a longitudinal direction. A drum 61, mounted upon the counter-shaft 4| is adapted by means of a cam track 68 to move the complementary portion of the main shaft 40B in longitudinal direction at selected times by the action of a rider, (not shown) which cooperates with the cam track 68 to move a system of levers 69 fulcrumed at 68A. The complementary portion 40B of the main shaft cooperates with the upper ends of the levers 69 by means of the pivoted block 69B which transmits the longitudinal movement thereto.

To prevent rotation of the complementary portion 40B of the main shaft during the longitudinal movement thereof, a guide means is provided, comprising a longitudinal slot 10 on the shaft into which a spring-pressed rider 1| is thrust to prevent rotation. The spring-pressed rider 1| is attached to the frame member 45 by means of a bracket '||A. When the face plates of the winding form F are in cooperativev position, the guide is substantially in the position shown in Figure 10, the rider 1| pressing upon the cylindrical surface to allow rotation of the complementary portion 48B of the main shaft. However, as the face plates are separated by movement of the complementary portion 40B of the main shaft to the right, as shown in Figure 10, the rider will cooperate with the slot 10 to prevent rotation of the shaft while it is being moved. Upon return of the shaft into its initial position, the condition illustrated in Figure 10 obtains.

Winding form As pointed out before, the winding form F is defined between two transverse face-plates at- Vtached to the respective ends of the main shaft portions 46A and 40B, called a headpiece and a tailpiece respectively. The two transverse faceplates are capable of being separated to Vsplit winding form by the longitudinal movement of the shaftportion 48B, moving the tailpiece away from the headpiece. The'headpiece and the tailpiece each comprise a plate portion 10 and a boss portion ||Y respectively, the latter portions being apertured and keyed to the ends of the main shaft portions 40A and 48B. The shaft portion 40A may extend beyond the plate portion of the headpiece to form the pin S5 as described hereinbefore. Pins '|2 may be provided to hold the parts rigidly in position. Y

The headpiece and the tailpiece are provided with aligning slots13 at their sides to expose a portion of the completed coil to allow holder clips to be automatically attached to the coil to prepare it for removal from the winding form without loss of form. Figure 3 shows the holder clips positioned upon the coil. This mechanism for automatically attaching clips to the coil will Y be described in detail hereinafter.

Between the headpiece and the tailpiece, a

shim plate 14 is positioned to separate the plane surfaces of the transverse face-plates. The shim-plate 14 is apertured to allow the pins 65 to project therethrough and also to provide openi ing for the holding screws 15 which are threaded into the headpiece. The thickness and peripheral contour of the shim-plate '|4 are varied to suit the dimensions of the coil that is to be wound in the form and may vary Widely. Adjacent the edges of the shim-plate, the corners of the headpiece and the tailpiece are chamfered and rounded so as to guide the wire to be wound into the trough of the form, the rounded edges protecting the insulation of the wire from chaflng.

The contour of the trough of the winding form may be designed to suit specific conditions as, for example, the coil to be wound for use in formwound armatures as described in my co-pending application Serial No. 107,341. In this case, the perimetrical contour of the coil is made of suitable dimensions to embrace the armature core and t into the slots thereof. The transverse contour of the form is shaped so that the sides of the coil which lit into the armature slots are made into quadrilateral form, the smaller dimension thereof being a minimum to permit the use of a narrow slot in the armature core and the transverse contour forming the end portions of the coil are shaped so as to place the wires f,

forming the coil as near the center as possible so as to employ the smallest possible amount of wire in the winding of the coil.

On the upper side of the headpiece is positioned a backwardly extending flange having an upstanding portion 8| parallel to the face-plate of the headpiece. A clamping means for holding the wire during the winding operation is positioned on the upstanding portion 8| as will be described in detail hereinafter.

Referring to Figures 5 and 6, the backwardly extending flange 8l] is provided with a lateral projection 80A which acts as a guideV to direct the wire into the winding form. The projection is contoured to force the wires toward the shimplate 14, the edges being rounded and chamfered to prevent injury to the insulation of the wire. The ledge formed by the backwardly extending flange 80 is fitted with a bar 8| pivoted. about a headed stud 82. The bar is held against a Ystop block'83 which is held in position by screws or the like by means of a resilient spring 84 anchored in any convenient manner to the upstanding portion 8|. The bar 8| is actuated by means of a moving finger 85 attached to the cutter head as i shown in Figures 23, 24, 25 and 26. The finger 85, moving to the right in Figure 23, is displaced by the cam surface on the lower end of the finger coming into contact with the bar 8l to override the bar as shown in Figure'24 and attain the po- Ywill force the completed winding coil from the form whichis split at thismoment as will be described hereinafter.

Wire clamping mechanism Positioned upon upright portion 8| of the headpiece is a movable clamp means which obtains a grip on the leading end of the coil when in an initial position and holds the leading end at a.

as :is clearly'shown Figure' 16'.- The `clamp blockV 92 is rotated through a predeterminedangular displaced" point during; the :operational ,cycle :foril a denitefperiod of time and then, `by the action of'an extraneous means; releases rthe leading end of thecoil and returnsto the initial positionK through the pull of a resilient means to grip the trailing endof the coil preparatory to the cutting operations to be described hereinafter. After the cuttingoperation has been completed, the clamp means again has a grip upon the leading end of thenext consecutive coil which is about to be wound in the new cycle of operation.

The upright portion 8| of the headpiece'is providedwith a boss 90 which is apertured to journal a stud 9| which may be integral with a clamp f block92; The stud 9| is transversely bored and fitted with a projecting pin 93 extending Ythrough a segmental slot 94 in the boss 90. The slot 94, byv its cooperation with the pinf 93, provides'a means' to'hold the block 92 in position and to limiti the'v rotative displacement of the clamp block A'bythecooperationbetween the pin 93 and the ends ofthe slot 94. between vthe end of the pin 93 and a xed point on the headpiece to urge the clamp block 92 in a counter-clockwise direction (Figure 15) so as to buttress the flat base 92A of the clamp block against the stop block 83 already described. The clamp block 92 may rotate about the pivotal stud 9| through a limited angular displacement being normally held in an initial position by the re- 'silient means 95.

The clamp block 92 is positioned so that its free face is-slightly displaced from the plane of the winding form allowing the wire to be wound into'the form to be guided therein Without interference. This is clearly shown in Figure 8. When the trailing end of the wire is to be positioned between the jaws of theclamp, it is displaced by aV guide G, shown generally in Figures 19 and 20, being positioned on a reciprocating cutter means. to be described hereinafter, the guide pushing the wire laterally so as to thrust it between -the clamping jaws.

The clamping jaws comprise a Xed element 96fpreferab1y integral with the clamp block 92 and a movable element 91, the movable-element being in the nature of a lever pivoted at an intermediate point on a pin 98 anchored in the clamp block 92. The lower branch of the leverlike movable element cooperates with the fixed portion to form the clamp jaws and the upper branch having appropriate cam surfaces cooperating. with an extraneous bell-crank 99 to apply force to the movable element to actuate the clamp, A resilient means urges the movable element of the clamp to open position and acts `between the upper branch ofthe lever-like movable element and a fixed point on the clamp block- 92.

Theben-crank 99 is pivoted at a central point on ra stud |0| which is held in xed position on a projection |02 (Figure l) of the bearing bracket' 42'. The upper end of the bell-crankis provided witli an adjustable block |03, adapted to cooperate with the movableY element of the clamp so. that when the lower end of the bell-crank, which cooperates witha rotating cam |04 positioned on the counter-shaft 4| is thrust upwardly by the cam, the clamp jaws will be closed, this operation taking place when the headpiece is in locked position, preferably in the upright positionshown in Figure 15.

As described-before, the clamp block 92 is displaced bythe pull of the leading end of the wire ofthe coil during the first 180 degrees of rotation A -resilient means 95` acts displacement; preferably about 90 degrees bythe pull ofthe leading Wire of the coil. It remains.

in this position-for a definite predetermined period of time during theY operational cycleuntil released by a' cam-actuated nger |05 (Figure 17). block hasthe advantage of displacing the leading end of the'coil to prevent interference with the subsequent operations on the trailing end of the coil inV relation with the clamp block in normal upright position, and at the same time leaves the leading end of the coil .substantially straight and' free of Abends which would interfere with the operationsrin positioning the 'wires in the commutator segments.

The nger |05 is positioned inthe rotational plane of the movable element of the clamp and is' normally displaced outside the path of the lever but at selected times is moved into rotational path of the lever by a cam means to release the leading end of the wire from the clamp and-allow the resilient means 95 to move the clamp block 92 back to the initial position. The

finger |05v is pivoted on astud |06 positioned on the central bearing bracket which journals the counter-shaft 4|. A` cam |01 is-keyed to the counter-shaft and adapted to rotate therewith to displace the finger |05by cooperating with .the cam rider |08, positioned on the finger. A resilient means |09 acts between the finger |05- and afixed point ||0 to pull the cam |IJ-`| and the cam riderY |08 into cooperative relation. In this` manner, the finger |05 is moved into the rotational path of the movable elementof the clampy at-predetermined times to give afblow to'release the clamphold on the leadingend-of thewire and allow the clamp `block 92`to move from its displaced .position to the initial position.

Cutter mechanism To positionthe trailing endloffthe completed coillas wound inthe form Fbetween the clamp jaws onthe headpiece andto separate the coilv from thetwire issuing from the spoo1,1a reciprocating head1-I .is provided whichhas aY guide G and-a cutting shears attached thereto to fulfill these functions; the generalview of. whichis. shown in 1Figure 4. The head H is reciprocated in its guide I5 through action of a lever |6- which contoured camsurface ||9 in theV periphery of` As already described,v the camY the camdrum 61. drum 61 is fixed onthecountershaft 4| androtates therewith so'that the cam rider ||8 is. displaced in timed relation with the operation of the other parts 'of the machine as will be described in detail hereinafter.

The upper end of the lever I6 is providedwith a stirrup |20 which is pinned to the lever for limited rotation thereabout. The stirrupy |20 is fitted with a stud |2| which is adjustably attached to apertured 'block |22, the stirrup, the stud, and the block being Vin the nature of Van adjustable pitman to transmit reciprocatory motion from the lever ||611to a bossr |23 positionedfon the reciprocating head I-I.v If convenient, a counter meansK'mayA be attached .to the guide I5. havingV an armc'ooperating-With the lever I |6v=to register the num- The angular displacementY of thev clamp' ber of actuations of the machine for the formation of coils.

The reciprocating head H is divided into two portions. A cutter head |24 and a pusher element |25 (Figure 19). Boss |23 is positioned on the end of the pusher element |25 and, through the action of the lever l5, moves the pusher element in the guide I5 which has grooves |26 cooperating with tongues |21 on the sides of the pusher element. The cutter element similarly cooperates with the guide ||5. In this manner, both portions of the cutter head are capable of reciprocating motion in the plane of the guide H5, each being separate but cooperating together by a mechanism to be described hereinafter.

Projecting forwardly from the pusher element, a bar |28 is provided to overlay the cutter head |24. The bar |28 cooperates with a stud |29 on the movable element |33 of the cutting shears, the element being pivoted on the stud |3|. A resilient means |32 (Figure 22) holds the movable element |30 in position, the tension of the resilient means being controlled by lock nuts |33. A fixed element |30A of the cutting shears is fixedly positioned on the forward end or" the cutting head |24. The opening between the cutting edges on the shears element is opened in the same direction as the bight to guide G so that the wires, as moved by the guide G, after falling into the notch N, will likewise be aligned with the bight of the shears so as to be positioned therebetween for the cutting action.

As pointed out before, the bar |28 overlays the cutter head |24 and cooperates with the stud |29 on the movable element |33 of the cutter shears. In order that the movable element of the shears may be displaced so as to create a shearing stress in the blight of the shears, the bar |28 is provided with an oblique slot |28A in which the stud |22 moves to actuate the movable element of the cutter shears. This action severs the wire at the trailing end of the coil. The bottom of the oblique slot |28A prevents separation of the cutter head |24 and the pusher head |25 and to keep the stud |29 normally at the bottom of the slot |28A, a resilient means |35 is provided which acts between the pusher element and the cutter head being in normal position as shown in Figures 19 and 20. Proper sockets |35A and |35B are provided upon the two portions of the cutter head to hold the resilient means |35 in position. The resilient means |35 is suiilciently stiff to remain in unflexed condition during the initial movement of the cutter head; that is, during the period in which the guide G positions the wires of the trailing end of the coil in the notched end so as to position them between the jaws of the clamping means and in the bight between the cutters of the shears. However, when the forward end of the cutter head |24 abuts against the headpiece, as shown in Figures 20 and 2l, the continued displacement of the pusher head causes the stud |29,

.positioned upon the movement element of the shears |38, to be displaced to the right (Figure 21) by the action of the sides of the oblique slot upon the stud |29. This displacement closes the bright of the shears and eifectuates the cutting action of the trailing end of the coil to release the coil completely from the wire issuing from the spools. This allows the coil to be removed from the machine.

The guide G is positioned relatively above the jaws of the clamp, while the cutting shears is located relatively below the jaws of the clamp so that the wire from the spool may cut below the jaws of the clamp to sever the coil therefrom and at the same time allow the end of the wire from the coil to remain fastened between the clamping jaws to become the leading end of the next consecutive coil.

As described before, the guide G and the nger 85, as shown in Figures 23, 24, 25, and 26, are actuated by the action of the reciprocating head H to perform the functions heretofore described. The guide G is in the nature of a plate having cam surfaces on the forward end thereof so as to gather the wires issuing from the form together into the notch N whereafter by further movement the guide positions these Wires between the jaws of the cutting machines and in the bight of the cutting shears. The finger is actuated by a bar 85A which is reciprocated within the guide 85B xedly positioned to the frame. The bar 85A cooperates with the pusher head |25 by means of the laterally extending lug 85C which cooperates with the notch 85D in the bar 85A so that the thrust of the pusher head |25 reciprocates the linger 85 as described hereinbefore.

Clip-attaching mechanism After the coil is completely wound and ready for removal from the winding form of the machine, some temporary holding means is preferably provided to retain the loose wires of the coil in form until some more permanent holding means may be applied tc the coil, tape binders for example. For this purpose, holding clips of the type generally illustrated in Figure 34 are provided which are attached to the coil sides (as shown in Figure 3) by an automatic mechato be described in detail hereinafter. This mechanism is best illustrated in the drawings in Figures 27 to 34 inclusive.

As pointed out before, aligning slots are provided in the sides of the headpiece and tailpiece to expose the sides of the wound coil to which the clips are to be attached before the coil is removed from the winding form of the machine. Thr-:clips are preferably attached to the coil sides at the time before the cutting of the trailing end of the coil from the wire of the spool is consummated so that the wires of the coil may be held .compactly together' and in convenient form for the taping operation.

Referring particularly to Figures 27 and 28, reciprocating heads |32 and 539 are provided which approach the coil C (shown in phantom) from its sides to attach the holding clips to the exposed portion of the coils in the slots described hereinbefore. The reciprocating heads are moved by two bell-cranks |48 and |4| which cooperate through their horizontal arms by the intermeshing of gear sectors |22 positioned on the ends of the arms. The gear sectors |42 enforce uniform movement oi bell-cranks and provide the saine simultaneous lateral movement of the reciprocating heads by the action of the upright arms of the bell-cranks. The bell-cranks are pivotally mounted on studs S43 positioned on an upright plate |44 which is xedly attached to the frame of the machine. The upright arm of the bell-crank |45 is provided with an ear |45 to which a cam rotor |46 is attached to cooperate with cam path |47 in a disc |48 fixed to the counter-shaft 4| for rotation therewith. The rotation of the disc |48 causes the cam rotor |48 to follow the cam path so that the bell-crank |40 is moved about its pivot, this motion being transferred to the other bell-crank |4| by the cooperating gear sectors |42. The two reciprocating heads |38 and |39'are`thereby'advancedinwardlyf toV the exposed portion of the coil' in the slots` of the headpiece and tail'pieceby an' automaticv may be made integral with the head |38 and de signed to cooperate withV the upright arm ofthe bell-crank MI by sliding bearing IMA which compensates for the arcuate path ofthe end upright arm. Guides |52 and |53 are suitably positioned by bolts or the likeon the upright plate |44 to cooperate with lateral projections |38A on the reciprocating head |38 in thefplanecf the exposed coil side so that the clip to beattachedr thereto by the reciprocatinghead will registerwith the slots in sides of theheadpiece and. tailpiece described hereinbefore.

on its upper side which are pivoted about a bolt 155 fixed to the reciprccatinghead. (SeeFigure 29.)

The forward bight between the twobars |5lland |55 is provided with inwardly extending flanges |56 to prevent the clip CL' from falling from position between the bars; The inner sides of the bars are provided with notched jaws |5'lto allow the clip sides to be gripped for application of squeezingpressureto collapse the sameand open its jaws to embrace the coil. VTheljaws |5`| may be of integral construction if desired or `may' be separately attachedzasY shown in the drawings by means ofthe screws' |58;

To apply squeezing pressure tothe clip CL by vided to act in the rearward bight ofthe` twol bars 554 and. 55. The earn is tted'with a stud' IESA,

journaled in an aperture in the reciprocating head ISS, which on the lower side thereof, is iittedV with an actuating armI |60 keyedv or otherwise suitably attached thereto; The'v actuating.A arm lcooperates with a projectionN I6| adjustably positioned on the upright plate |44 -so'that when lthe actuating arm contacts'the projection, the

cam |39 will be turned to separate the bars` |54 and |55 which, acting about thefpivotbolt |55,-

will squeeze clipl CL between the jaws 51, therebyA preparing it for attachment to the coil sidesvas l shown in Figure 30;

The projection |6| is of predetermined" length in the plane of reciprocationA offthehead" |38 so that the clip will bev released after the required distance has been traveled'by having the actuatingrlever |60 overrun the projection l5! asshown inv Figure 31.

tween the endsv of the b'ars' |54` and: |55: and theY other resilient means |63, acting between anA arm #GEA integral with the'l actuating arm?. |63. andia fixed point |5013' on the reciprocating: head1.. On. the return stroke 1 of the' reciprocating: head."V |38?,V theactuating arm |59 again drags'iacrossthe surface of the projection 6| to returnto the initial position substantially shownV in'zliguref-29 tobegin a new cycle of operation..

The initial position of the-reciprocating head.. |38 is located below a magazine |64 containing: aN holding 'clips 'which' aref'fdto the reciprocating:

The 'reciprocating head |38 carries clip actuating bars |54 and |55V Two resilientmeans' |62. and |634 are provided to return the' bars |5'4zand l55i'to: initial position, ther resilient kmeans." 52.' acting; be-

headn consecutively.' The magazine preferably hasaY removable portion IMA whichzmay bel-re@ moved for llingwithout interrupting the con.- tinuous operation of themachine. To allowthe clipsfto' fall consecutively into the reciprocating: head, a feeder is provided Which comprises. an lever (Figures'33 and 34) pivotally mounted:y on the'uprightplate |441by means of the stud |65; The lever |65 hasa laterally projecting arm |611 whichy cooperates'withk an aperture |68 in the base of the magazineiG/and is adapted to contact thef last clip in the magazine to hold theY camein position during a predeterminedperlod` of the cycleof'pperation. A resilient means |69? is provided to'hold` the arm |61 in contact with the clip to prevent it and all the other'clips above it from falling out of themagazine when the head Itis in itslinnermost position. When the tailpiece, shown in phantom in Figure 34, is moved to open the wiring form F, it contacts the project'- ing'end |65A'- of the lever |55 and displaces it so as to release theclip CL. This allows the cllp'to fall into operableposition in thevreciprocating head: |38" between the squeezing jaws. When the formiF- is? again closed by the return of the tail-V piece, the resilient meansv again pulls the lever back to the holdinglposition, to prevent theclips in themagazinegfrombeing displaced until the next' cycleof operation.

Each.- reciprocating head |38 and |39V is pro-V videdk with' similar mechanisms to` attach the holding clipsztoithe coilsides.

Operation Thewire'used inl formingthe coils is supplied" tofthe machine inspools which are mounted ad'- jacent' theretoA in any convenient manner', thee wire -being led fromV the spools to wire straighten'- ingdevices shown inl general in Figure' 1. Positioned between 'the Wire straightening devicesand the winding form, an vupwardly projecting' armA. is1 provided to direct' the wire from thel wire straightening devices into thewinding'form; pref'- erably at a steep angle, by leading the'wire over the-top ofitwo pulleysto theiclamping deviceson headpiecesof the winding form.

The number of wires used in tlie'winding'operationfor forming the coils is optional, a multiplicity of wires is preferably used, dependingupon the'design" of the armature in which the completed coils are to be incorporated. Inl the? drawings, a coil having two wires has'been illustrated in connection with the automatic machine."

The main shaft 40a ofthe machine with the ln*- corporated winding form F isv driven directly frein the'primary power source by the drivingbeltg' intermittent rotation of the winding-form being' obtained by the use of the saw-tooth clutch. The counter-shaft 4I is driven byl a gearV train from" the constantly rotating driver portion ofi the saw-tooth clutch and rotates preferably. one revolution fortwelve vrevolutions of theA driveripore" tion.` Positioned onpthe counter-shaftdl arefthe.I cam" means which actuate the various' supple=- mental devices cooperatingwith the winding formF to obtainfull automatic; operationrof. the: machine, Which. may thereby operate steadily without special attentionV of an. operator. other thanY to replenish the source of materials withouti whichthemachine'is inoperative; viz, the holdl ing clips.' and.' the wire; The timev relations between .the mainzshaft and thel counter-shaft dur-'- ing; the cycle.: of operation are based upon the speed-.ratio as determined by thezinterconnectingV gear train' while; thasequentialoperation of thef thereof.

supplemental devices, cooperating with the winding form, is obtained by angular displacement be- Y tween the various cams on counter-shaft 4l Assuming for convenience in description that the cycle of operation of the automatic coil winding machine begins with the condition of the winding form F, substantially as shown in Figure 9, a description of the sequential operation of a complete cycle in winding a coil will be described in detail hereinafter. As illustrated in Figure 9,

the automatic coil-Winding machine has just rev leased the coil C from the wincng form by the longitudinal movement of the tailpiece on the shaft portion 40B, the coil C being held in form by the attached clips CL. The leading ends of the wires W are tightly held in the clamping'mechanism on the headpiece as is best illustrated in Figure 15 (the headpiece in this figure being rotated from its upright form and the clamp block 92 is displaced by the pull of the wires W).

'I'he cam path 68 on the periphery of the cam drum 6? has moved the tailpiece from its cooperative relation with the headpiece which will allow removal of the completed coil. The headpiece, during this portion of the operative cycle, is held in locked position by the locking mechanism shown generally in Figures l2, 13, and 14. The saw-tooth clutch is disengaged just prior to the operation of the locking mechanism, so that the headpiece may be rigidly held in upright position. The counter-shaft, rotating continuously one twelfth the speed of the driver portion of the saw-tooth clutch-causes the cam path 68 to move the tailpiece again into cooperative relation with the headpiece to the position shown substantially in Figure '7. In doing so, the guide means shown in Figures 10 and 11 is released from the locking position as shown in Figure 11 which obtains when the tailpiece is in retracted position shown in Figure 9 to the free position shown in Figure 10, in which the plunger 1| rides on the cylindrical surface of the shaft portion 48B and presents no interference with the rotation The tailpiece, under these circumstances, is in close cooperation with the headpiece to close the winding form F substantially as shown in Figure '7.

With the headpiece and tailpiece cooperating as shown in Figure '7, the winding form Vis in closed condition and ready for the beginning of the new coil-Winding cycle. The locking mechanism shown in Figures 12, 13, and 14, is released at this time by the cam rider contacting the low portion of the cam 55 to retract the bar 56 and disengage the projection 55A Afrom the slot 51. Simultaneously, the driven portion of the saw-tooth clutch is released and its resilient means shifts it into engaging relation with the driver portion so that the winding form F will begin to rotate.

The headpiece and tailpiece rotate together, the driving force being transmitted from the headpiece to the tailpiece bythe pin 65 which engages the aperture 66 in the tailpiece. They are held in cooperative relation by the action of the cam rider (not shown) in the cam path 68.

The initial pull of the headpiece on the leading ends of the wires W displaces the'clamp block 92 approximately 90 degrees about its pivot against the pull of the spring 95 to the position shown substantially in Figure 16. The wires vissuing from the pulleys on the guide A tothe clamp block 92 on the headpiece are slightly displaced from the plane of the Winding block, and during the first 90 degrees of rotation, the

wires are guided into the winding form F by contacting the chamfered edges of the lateral projection 86A on the headpiece. Thereafter the wires will smoothly wind into the form for a predetermined number of turns from the pulleys without interference. j

After the predetermined number of turns have been wound into the form (not necessarily the number of turns necessary to complete the coil) the leading end of the wire is released from the clamp block 92 on the headpiece by the action of the finger |65 (as shown in Figure 17) contacting the movable portion 91 of the clamp. The counter-shaft "5i rotates to bring the cam |01 into relation with the cam rider 93, positioned on. the linger |65, the finger 465i being moved thereby into the path of rotation of the movable portion 9'! of the clamp, so that the resulting impact between the two parts will displace the movable portion in a clockwise direction about its pivot. This action releases the grip of the clamping jaws on the leading end of the wire and completely frees the leading end of the wire from the headpiece. The coil may not unwind even though its end is free because the subsequentlywound turns overlap the first turn and prevent it from being displaced. The form F continues its rotation in the interim until the required number of turns have been wound into the form to complete the coil. rlhe clamp block 92, no longer iniiuenced by the pull of the leading wires of the coil, is snapped back to its original position (Figure 18) by the action of the resilient means 95 and by the centrifugal force of rotation of the headpiece. In this position, clamp block 92 with its jaws opened under influence of the resilient means |09, cooperates with the clamping and cutting mechanisms Whose actions are to be described hereinafter.

After the full number of turns have been wound into the 'winding form, the lever 50 and the locking mechanism shown in Figures l2, 13 and 14 again operate to disengage the saw-tooth clutch and lock the headpiece in upright position as shown in Figure 15. This places the headpiece and clamp block 92 in proper position to cooperate with the clamping and cutter mechanisms. The position of the wires W is defined between the left upper corner of the winding form (Figure 18) and the pulleys on the guide A so that they are substantially aligned with the bight of the cutting shears on the moving head H and the space between the clamping jaws 96 and 91.

Cam rider I8, cooperating with the cam path H9 on the cam drum 61 at this time, advances the cutter head H toward the headpiece by the lever mechanism already described, the cutter head H moving in substantially parallel juxtaposition with the main shaft L30. This advances three elements into cooperative relation with the headpiece; namely, the guide G, the cutter shears (both shown generally in Figures 19, 20, and 21), and the finger 85 (shown generally in Figures 23 to 26). 4

The guide G projects slightly farther in the direction of the headpiece than the cutting shears, and is fitted with cam surfaces on its forward edge to collect the wires W into the notch N, which aligns the wires W with the gap between the jaws of the clamp. The guide G is spaced relatively above the clamp jaws and the cutter shears is spaced relatively below the clamp `iaws and both being positioned along the line of the wire issuing from'the winding form to the pulleys on the upwardly projecting arm A. The action of the guide G, therefore, positions the Wires in the bight of the cutting shears for the cutting operation of the trailing end of the completed coil below the clamp and in the space between the clamp jaws to allow a grip to be obtained by the clamp on the leading end of the next consecutive coil to be wound. The guide G has a further function to displace the wires from the plane of the winding form to the plane of the clamp block 92 as is clearly shown in Figure 20 which shows the head H in its maximum position of displacement. The movement of the guide and cutter head, as limited by contact with the headpiece, is shown in the Figures 19 and 20.

Simultaneously with the action of the guide G,

the bell-crank 99 is actuated by the cam |04 positioned for rotation with the counter-shaft 4|.- When the wires W are positioned between the clamp jaws by the guide G, the movable element 91 of the clamp is displaced downwardly by the block on the bell-crank 99 to close the jaws lthereof and grip the Wires. The movement of these parts is clearly shown in Figure 15, the adjustable block on the upper end of the bell-crank contacting the element 91 to accomplish the clamping action. This gives the headpiece a grip on both the trailing end of the coil already wound and the leading end of the next consecutive coil.

While the clamp jaws are being closed by the action of the bell-crank 99, the cutter shears are being actuated by the cooperation of the pin |29 on the movable portion of the shears and theoblique slot |28A on the pusher portion of the head H. 'Ihe cutter portion as described before abuts at its forward end against the headpiece as shown in Figure 20 at the beginning of the cutting action. 'I'he pusher element, however, is designed to advance farther and must do so against the action of the resilient means |35, which acts between the cutter portions and the pusher element and holds the pin |29 in the bottom of the oblique slot |28A so that the cutter shear jaws are open during the initial stages. When the pusher element advances against the resilient means |35, the cutter portion being held stationary by its abutment against the headpiece, the pin |29 is displaced from the bottom of the oblique slot |28 and advanced toward the right (Figure 21) by riding up the slot. This action displaces the shear element and closes the bight and inasmuch as the wires have been positioned therein by the guide G, they will be cut so that the trailing end of the coil is severed. This frees the completed coil for removal from the machine.

During the interval of time in which the guide G and the cutter shears have been actuated, the nger 85, shown in Figure 23, has been advancing in the direction of the headpiece by the action of the pusher element through the stages shown generally in Figures 23 to 25. 'I'he finger, by this process, has been positioned on the rear side of the bar 8|, the nger being exible on the forward stroke to allow it to be displaced as shown, but is rigid on the stroke away from the headpiece so that the bar 8| must be displaced about its pivot. 'I'he displacement of the bar 8| assures the removal of the coil from the form by thrusting the leading and trailing ends of the coil outwardly from the form. This action is generally shown in Figure 26.

At the time the head lH is moving into cooperation with the headpiece to perform the functions required of it, a clip-attaching mechanism, shown generally in Figures 27 to 33, is set in motion to position a holding clip on each side of the coil as exposed in the slots of the winding form F. The holding clips are released and positioned on the coil sides an instant before the trailing end of the coil is severed by the cutting shears below the clamping means, so that the wires of the coil will be held in compact relation which will allow the cutter to operate without destroying the form of the coil. When the coil is removed from the machine, the clips hold the coil together until more permanent holding means may be applied.

The cam path |41 in the disc |48 moves the reciprocating heads |38 and |39 in a plane transverse to the main shaft 40 through the agency of the bell-cranks |40 and |4| so that the clips may be attached to the exposed coil sides. As the heads move inwardly, the fixed projection |6 which is of predetermined length, contacts the actuating lever of the double cam |59 to apply squeezing pressure to the clip CL to open its jaws to allow entry of the coil sides therebetween. When the extended clip is adjacent the coil side (as shown in Figure 30) the actuating lever |60 is disengaged from the contact with the projection |6| and allows the squeezing pressure on the clip to subside, closing the clip in engaged position on the coil side. The reciprocating head then retreats to its initial position to be replenished with new clips from the magazine as will be described hereinafter.

The winding form, after the cutting action of the trailing end of the wire, is opened by the action of the rider (not shown) in the cam path 68 on the cam drum 61 so that the completed coil may be removed' from the machine. The tailpiece is moved longitudinally to open the winding form to the position shown substantially in Figure 9, the head H retreating simultaneously so that the nger 85 moves the bar 8| outwardly, as described before, to thrust the coil out of the form to fall into a hamper below. When the tailpiece is displaced to its maximum distance from the headpiece, it contacts the end of the lever to displace it a short distance to the right (Figure 34) so that a clip in the magazine is released to fall into position in the reciprocating head. The lever |65 is released by the return of the tailpiece and allows the projection |61 to hold the clips in position in the magazine to prevent them from falling out. From this point, a new cycle of operation is started.

It is to be understood that the above detailed description of the present invention is intended to disclose an embodiment thereof to those skilled in the art, but that the invention is not to be construed as limited in its application to the details of construction and arrangement of parts illustrated in the accompanying drawings, since the invention is capable of being practiced and carried out in various ways without departing from the spirit of the invention. The language used in the specification relating to the operation and function of the elements of the invention is employed for purposes of description and not of limitation, and it is not intended to limit the scope of the following claims beyond the requirements of the prior art,

I claim:

1. In a device of the class described, a revolving head piece, a tail piece cooperating with the head piece, means to allow relative axial movement between the head piece and and the tail piece, a wire ,form means positioned between the yhead piece and the tail piece and adapted to be split by the relative axial movement of the head piece and the tail piece, wire holding means cooperating with the form means and adapted to hold the leading end of the wire for predetermined intervals, cutter means cooperating with the form means to sever the trailing end of the wire, and means to position holding clips at predetermined times on the sides of the wire coil formed in the Wire form.

2. In a device of the class described, a revolving head piece, a tail piece cooperating with the head piece and adapted to rotate therewith, means to allow relative aXial movement between the head piece and the tail piece, a peripheral channel formed between the head piece and the tail piece -to form the wire coil and adapted to be split by the relative movement of the head piece and the tail piece, clamp means cooperating with the peripheral channel to hold the leading end of the wire, cutter means cooperating with the channel to sever the trailing end of the wire, shifting means cooperating with the clamp means and the cutter means to release the leading end of the Wire and to grip the leading wire of the next consecutive coil.

3. In a device of the class described, a revolving headpiece, a tailpiece cooperating with the headpiece and adapted to be rotated thereby, a peripheral groove formed between the headpiece and the tailpiece and adapted to form the wire coil upon rotation of the headpiece and the tailpiece, means to allow relative movement of the headpiece and tailpiece to remove the completed coil, oscillating clamp means cooperating with the peripheral groove and adapted to hold the leading end of the Wire coil during winding by being displaced from normal position, releasing means to open the clamp means at predetermined times to free the leading end of the wire coil and return the clamp means to normal position, means to secure the trailing end of the coil in the clamp means, and means to sever the trailing end of the coil between the clamp means and the peripheral groove.

4. In a device of the class described, a rotatable form for the formation of the wire coil, means to hold and to release the leading end of the Wire coil for predetermined times in a plane displaced from the winding plane, means to secure the trailing end of the wire coil and the leading end of the next consecutive coil in the means to hold and release by displacement from the Winding plane, means to cut the trailing end of the coil to free the coil, and means to remove the coil from the rotatable form.

5. In a device of the class described, a Wire guide, a rotatable form, means cooperating with the form to hold the leading end of the Wire in a plane displaced from the winding plane, means to cause the wire to pass into the form during rotation thereof, releasing means to break the hold of the means cooperating with the form at predetermined times to release the leading end of the wire, guide means to displace the trailing end from the winding plane to position the trailing end of the coil in the means cooperating with the form to obtain a new hold on the Wire forming the leading end of the next consecutive coil, means to sever the trailing end of the coil between the means cooperating with the form and the coil, means to position clips on the coil sides, and means to remove the completed coil from the form.

l 6. In a device of the class described, a rotatable form for the wire coil adapted to be rotated for a predetermined portion of the operational cycle and to remain stationary for the balance thereof, shiftable holding means cooperating with the rotatable form to hold the leading end of the wire coil adapted to be shifted from normal position during rotation of the form, means to release the holding means during the rotation of the form to return the holding means to normal position, means cooperating with the holding means to position the trailing end of the wire coil in the holding means to effectuate the holding operation, cutter means to sever the wire of the coil between the holding means and the coil, means to position clips on the sides of the coil and means to remove' the coil from the rotatable form.

'7. In a device of the class described, a split rotating form, guide means to lead the wire into the form, driver means to rotate the form at predetermined times, locking means to hold the form stationary at predetermined times and places, Wire holding means cooperating With the form to grip the leading end of the coil adapted to be shifted during the winding cycle from an initial position, releasing means cooperating with the holding means to free the leading end of the coil and allow the holding means to shift to the initial position at predetermined times, means to position the wire of the completely wound coil in the holding means and to actuate the holding means to grip the wire, cutter means to sever the wire between the holding means and the form, and means to open the l form and remove the coil from the form.

8. The device dened in claim '7, further characterized by a means to position holding clips on the sides of the coil prior to the severing of the Wire by the cutter means.

9. In a device oi the class described, the combination of a split rotatable wire-winding form, means positioned on the form to hold the wire end in a plane displaced from the winding plane, nonrotating cutter means cooperating with the form at predetermined times to sever the wire adjacent the means to hold the Wire and in a plane displaced frorn the winding plane, and means to remove the completed coil from the form.

10. The device dened in claim 9, further characterized by a magazine for holding clips and means to position the holding clips on the sides of the coil from the magazine.

ll. In a device of the class described, the combination of a rotatable winding form, means to hold the leading end of the Wire in a plane displaced from the winding plane and for predetermined times, means to sever the trailing end of the wire, non-rotating means to position holding clips on the sides of the coil, and means to remove the coil from the form l2. In a device of the class described, the combination of a rotatable winding form, means mounted on the form to hold the leading end of the wire in a plane displaced from the winding plane, reciprocating means cooperating with the form to release the leading end of the wire, means to position the trailing end of the Wire by displacement from the winding plane into the means mounted on the form for holding the leading end of the wire, and to cut the trailing end of the coil to free the coil, means to position holding clips on the coil sides, and means to remove the completed coil from the form.

13. In a device of the class described, the combination of a rotatable form, pivoted holding means on the rotatable form adapted to assume two positions, an initial position and a Winding position, reciprocating means cooperating with the form to guide the trailing end of the coil from the winding plane into cooperation with the holding means in a plane displaced from the winding plane, and to cut the completed coil free from the supply wire, means to position holding clips on the coil sides and means to remove the coil from the form.

14. In a device of the class described, the combination of a rotatable form, means mounted on the form for holding the leading end of the coil and adapted to assume a displaced position from an initial position, means to position the supply wire into the holding means in its initial position and anchoring the same therein, means to cut the supply wire below the holding means to free the trailing end of the coil, and means to release the leading end of the coil from the holding means when the holding means is in displaced position.

15. In a device of the class described, the combination of a rotatable form, guide means for the supply wire to establish an angle of tangency between the form and the supply wire during stationary periods of the form, holding means mounted on the form to anchor the leading end of the wire, the holding means being moved from an initial position to a displaced position by the pull of the supply wire, means to release the holding means to free the leading end of the Wire and allow the holding means to return to the initial position, reciprocating means cooperating with the form along its rotative axis to position the supply wire in cooperation with the holding means to anchor the supply wire, and to cut the trailing end of the coil free from the supply wire, reciprocating means cooperating with the form along its transverse axis to position holding clips on the coil sides, and means to remove the completed coil from the machine.

16. In a device of the class described, a winding form providing a wire-holding portion for the wire end displaced from the plane of the winding form capable of being disposed into two positions, an initial one at which the wire is gripped and severed; and a displaced position employed during a portion of the winding operation.

1'7. In a device of the class described, a rotatable winding form alternately rotating and stationary, holding means on the form to grip the wire during the rotating period of the form and adapted to be released before the end of the rotating period to free the leading end of the coil, guide and cutter means cooperating with the form during the stationary period of the form to position the supply wire in the holding means and to sever the trailing end of the coil, attaching means to position holding clips on the coil sides simultaneous with the action of the guide and cutter means, and means to remove the completed coil from the form.

18. In a device of the class described, the combination of a rotatable wire-winding form, holding means on the form adapted to be displaced from an initial position to grip the leading end of the coil, releasing means cooperating with the holding means to break the grip thereof on the leading end of the coil and allow the holding means to return to the initial position, cutter means to sever the trailing end of the coil between the holding means and the form, actuating means for the holding means to give the holding means a grip on the leading end of the coil, and means to remove the coil from the form.

19. In a device of the class described, a winding form provided with non-rotating means to attach holding clips to the sides of a completed coil, comprising reciprocating heads moving in a transverse plane of the winding form to cooperate with the exposed sides of the coil as held in the winding form, said heads being provided with means for applying and releasing a squeezing pressure to the clips to prepare them to grip the coil sides.

20. In a device of the class described, a rotatable wire winding form, holding means on the form adapted to grip the leading end of the coil, releasing means to break the grip of the holding means on the leading end of the wire, reciprocating means to position lthe wire in the holding means and to sever the trailing end of the coil therefrom, and actuating means cooperating with the holding means to clamp and grip the new leading end of the coil to be wound, attaching means to position holding clips on the coil sides, means to remove the coil from the form, and power means adapted to actuate the various means in predetermined time sequence to obtain full automatic action of the device.`

21. In a device of the class described, a revolving head piece, a tail piece cooperating with the head piece, means to allow relative axial movement between the head piece and the tail piece, a wire form means positioned between the head piece and the tail piece and adapted to be split by the relative axial movement of the head piece and the tail piece, wire holding means cooperating with the form means and adapted to hold the leading end of the wire for predetermined intervals, cutter means cooperating with the form means to sever the trailing end of the wire, means to position holding clips at predetermined times on the sides of the wire coil formed in the wire form, means to remove the coil from the form and power means to apply an actuating force to the various means at predetermined times to obtain full automatic action of the device. Y

22. In a device of 'the class described, a head piece, a tail piece cooperating with the head piece and adapted to rotate therewith, means to allow relative axial movement between the head piece and the tail piece, a peripheral channel formed between the head piece and the tail piece to form the wire coil and adapted to be split by the relative movement of the head piece and the tail piece, clamp means cooperating with the peripheral channel to hold the leading end of the wire, guide and cutter means cooperating with the channel and the clamp means to position the wire in the clamp means and to sever the trailing end of the coil between the clamp means and the coil, means cooperating with the clamp means to grip the leading end of the wire for the formation of the next consecutive coil, means to remove the coil from the form, and actuating means cooperating with the various means to apply power thereto at predetermined times in a predetermined sequence to obtain full automatic operation of the device.

23. In a device of the class described, a revolving head piece, a tail piece cooperating with the head piece and adapted to be rotated thereby, a peripheral groove form between the head piece and the tail piece and adapted to form a wire coil upon rotation of the head piece andthe tail piece, means to allow relative movement of the head piece and the tail piece to move the completed coil, oscillating clamp means cooperating with the peripheral groove and adapted to hold the leading end of the coil during winding by being displaced from normal position, releasing means to open the clamp means at predetermined

Images