US1933320A - Winding machine - Google Patents

Description

Oct. 31, 1933. R. .o. EATON ET AL 1,933,320

WINDING MACHINE Filed June 8, 1931 3 Sheets-Sheet l inventors: Regjnak O. Eaton,

-E-t:han vars,

Their Attorneg.

Oct. 31, 1933. R. o. EATON ET AL WINDING MACHINE Filed June 1951 3 Sheets-Sh 2 3 m no m k e h t r .m a w M R 5 W b W M H H U H mmm Oct. 31, 1933. v R o EATON r AL 1,933,320

WINDING MACHINE Filed June 8, 1931 s Sheets-Sheet a \nventors'. Re glnald O. Eaton Ethan VaP5,

Then" Attorneg.

Patented (lot, 31, 1933 A'riEs F fence Park, Pa., assignorsto' General Electric Company, a corporationofNew *Y'ork Application .lune S, 1931. Serial No. 542,888

g 22 Claims; (Cl; 153-645) V 1 Our invention relates to winding machines, more particularly to machines for winding coils of. aresilient material, and has for its object the provision-of an improved winding machine 5.. of .this .characte Our invention, although not limited thereto, is especially applicable to the winding of ribbon orv strip-like, metallic resistance materials edgewise into eli'ptical coils, such as are used in- Icertain electricalapparatus and applications.

Considerable difficulty has been experienced heretofore in attempting to make edgewisewound coils of ribbon-like resilient materials, especially coils of elliptical form, by reason of l6iithe inherent tendency of each turn of the material when Wound to spring back toward the position it had before being formed. This tendency in some cases is particularly pronounced, and times causes the successive turns of the zojiicoil to form'in a spiral. In order to remove the spiral it is 1 necessary to ensive and troublesome operations.

Our invention in one of its aspects contem-- plates the provision of an improved apparatus 25.7:1iorwinding coils whereby the turns of the coils are formed into bends having an arc somewhat than. the arc-it is intended they shall assume in the finished coilso as to comnensate for the inherent tendency of the mate- Llnal tospring back-alter the turnsare formed. In carrying our invention into effect in oneiorin thereof, We "vide a winding and a rotatably mounted win ing head operably associated with the arbor. Mounted on the winding ;..head is a suitable jaw member arranged to gripformed at the proper points to a coil of the desired'shape. i

We further provide, vention, suitable power means for operating the winding head and the material feeding means,

and also for operating certain other auxiliary apparatus used in our machine, and provide suitable controlling means for the power operatlng means whereby the operation of the Ina-"- chine is essentially automatic.

resort to rather exbase or' standard '11.

his lengths of the material to the. 45 Iwlnding head whereby the bends or turns are" in one form of our in- Fora more complete understanding of our invention reference should be had to the accompanying drawings, in which Fig. 1 is a plan view of a winding machine embodying our invention; Fig.2 is a diagrammatic viewof the I machine of Fig. 1 andillustrating certain control members and circuits arranged in accordance with-our invention; Fig. 3 is a perspective View of a portion of the winding machine of ,Fig. 1, parts being shownyin section so as to illustrate more clearly certain details of construction, and certain portions being broken away; Fig. 4 is a fragmentary side elevation of the winding machine of Fig. 1 and illustrating the positions certain of the elements haveat' one stage of the winding operation; Fig. 5 is a view similar to Fig. 4 but illustrating the positions certain'of the elements have at a more advanced stage of the winding operation; Fig.

6 is a Vertical section taken through the line- 6--6 ofFig-.- 4; Fig. 7 is a view similar to Figs.

4 and 5 but illustrating the positions certainof the elements have at a still more advanced stage-0f the winding operation; Fig. 8 is a-sectio'nal' view taken through the line 38 ofFig.

6 and Figq9 is-a view similar to Fig. 8 but" illustratingcertain elements of the machine in different operative positions. I

Referring to the drawings, we have shown our invention in one form in connection with a winding machine for winding elliptical coils formed of fiat, ribbonlike, resilient, metallic material wound edgewise. While coils intended to be used in various services and applications may be formed with our machine, we have illustrated the machine as applied to the winding ofcoilsintended to be used for electrical purposes, such as resistance elements.

In one form, our invention comprises a winding -'head-10 rotatably mounted in asupporting As shown, the winding head is of substantially cylindrical form and is provided with journals 10a and 10b at its end Y portions arranged to rotate in corresponding bearings 12 provided in the base. Suitable lum0 bricating devices 13 are provided to lubricate these bearings.

The winding head is rotated by means of a rack 14 arranged to reciprocate in a retaining Z 5- guideway 15 provided for it in the base 11. This rack, as shown, meshes with a gear 16 surrounding the" winding head substantially at its central portion and secured for rotation with the head- The gear 16 maybe secured to the winding head in any suitable manner, as for example by means of a key 17 (Fig. 6).

One end of the winding head is recessed, as indicated at 18, and in a portion of this recess is arranged a plate 20 formed of some suitable relatively hard material, such as tool steel. This plate, as shown, is of segmental shape and has an area substantially equal to the area of the recessed portion. Within the segment of the recess left by the plate 20 is arranged a second segmental plate 21, this plate also being formed of some suitable relatively hard material, such as tool steel. Secured to the second plate and preferably formed integrally with it is a third plate 22. This plate is provided with an arm 23 extending somewhat beyond the adjacent edges of the recess and winding head, as clearly shown in Figs. 3, 4, and 5. The plates 20 and 21 may be secured to the winding head in any suitable manner, but preferably will be secured thereto by means of screw fastening means 24.

Arranged on an axis substantially coincident with the axis of rotation of the winding head 10 is a winding arbor 25. This arbor, as shown (Fig. 6), is secured in a central aperture 26 provided for it in the plate 20.

the length of the path of motion of'the plate 31 in these guides may be adjusted by means of a suitable adjusting stop member 32a. The

"feed plate, as shown, is provided with a pair of vertically spaced laterally projecting arms 33. The material 27 is fed to the winding head b tween these arms, and the arms carry a suitable clamping device for securing the material to the plate, whereby when the plate is moved forward in its cross-head the material will be carried with it and thus fed to the winding head.

This clamping device, as shown, comprises a "clamping member 34 pivotally mounted on an eccentric 35 which in turn is rotatablymounted in the projecting arms 33. The position of the eccentric in the arms is adjusted by means of a lever 36 which, as shown, is secured to turn the eccentric in its bearings. This lever is formed as a yoke and may be locked in any suitable position of adjustment by means of a locking stud 37 threaded in the upper arm 33 and passed through an arcuate slot 38 provided 7 for it in the yoke. As is well understood, if the stud head be turned in so that it engages the yoke the latter will be locked, whereas if the stud be turned out the yoke will be released to permit adjustment of the eccentric.

The clamping member is provided with a jaw 40 (Figs. 1, 2, and 3) secured therein and formed of some suitable relatively hard material, such as tool steel. This jaw is so arranged in the clampin member and the latter is so arranged on its eccentric that if the clamping member be rotated on the eccentric in a clockwise direction, as viewed in Figs. '1, 2, and 3, the jaw will grip the material 27 and clamp it securely against the feeding plate 31; these members are further arranged so as to automatically release the material if the material be pulled forward toward the winding head independently of the feeding device or if the feeding device be moved back toward its initial feeding position, or in other words; its position remote from the winding head. The degree of pressure with which the jaw engages the material is adjusted by means of the eccentric 35. it will be observed in view of the foregoing arrangement that when the feeding plate is in its initial feeding position, shown in Figs. 3 and 4, that if the jaw be moved to grip the material and the plate then be moved forward to its position adjacent the winding head a predetermined length of the material will be fed to the winding h ad, this length being determined by the length of the path of movement of the feeding plate and hence by the adjustment of the screw 32a. it will also be observed that when this operation has been completed if the material bemoved forward relatively to the plate or if the plate be moved backwardly toward its initial position relative to the material, the jaw will automatically be released to free the material of the feeding device.

It is to be noted that the feeding device is so arranged that it will feed the material 27V to the winding head onone side of the winding arbor 25, as for example the upper side, as viewed in the figures.

Suitable means are provided on the winding head for gripping the material fed to it, whereby when the headis rotated in a clockwise direction, as viewed in Figs. 3, 4, 5, and 7, the material will be wound about the winding arbor 25 so as to form one turn of the winding. This gripping means comprises a clamping member 41 provided with a jaw 41a on one of its ends.

This clamping member, as shown, is of rod-likeform and is mounted to slide in a hole 42 provided for it through the winding head and arranged so that when the head is in its initial winding position, shown in Figs. 3, 4, and '7, the jaw will receive the material 27 beneath it, the material thus being sandwiched between the jaw and the hardened plate 20 carried by the winding head. As shown, the clamping member is arranged to slide in fixed bearings 43 and 44 provided in the end portions of the bore 42. Arranged in the bore 42 and surrounding the clamping member is a suitable compression spring 45 having one end bearing on the bushing or bearing 43 and its other end bearing on a collar 6 secured to the clamping member. By reason of this arrangement the jaw is biased by the force of the spring to its releasing position, that'is, to a position at which the material is free to pass beneath it. The jaw is moved to its clamping position by means of a lever 47. This lever, as shown, is provided with a forked end and is pivotally secured to the end of the clamping member, which is opposite the jaw 41a and which projects from the winding head, by means of a pin 48 so that the clamping member is received between the arms of the fork. As shown, the fork arms have curved or cam-like surfaces 47a arranged to bear against a hardened plate or washer 50 carried by the bushing 43. As is well understood, if the lever be rotated on its pin from the solid line position or" Fig. i to the dotted line position of this figure the cam surfaces of the lever will engage the plate 50 so as to move the jaw 41a toward the winding head against the bias of the spring her and jaw relative. to the winding head. will be observed in view of the above described 'the windingarbor. r

and also when it has thus been rotated .to

move the jaw to its clamping position. it, will automatically lock itself. with the jaw in its clamping position by reason of the shape given to the cam surfaces 47a. To releasejthe jaw,v

it is necessary to return the lever, 47 to its solid line position of Fig. 1; this, movement of the "lever, of course, allows the spring 45 to" move the jaw to its releasing position. It is to be Fig. 6, to prevent rotation of the, clamping memjaw arrangement, that when the jaw is in its clamping position it will securely lock the material to'the winding head, whereby when the latter is rotated the material will be bent around .In order to prevent the length of thematerial 27 .adjacentthe winding head and arbor. from buckling during the bending operation, a suitable retaining device ,is provided. This device comprises a sizing plate 51, a pressure applying plate 52 and a clamping plate 53 arranged to secure the sizing and pressure plates to the base standard 11 of themachine. The sizing plate 51,, as shown, is arranged to bear on a substantially flat surface provided for it on the standard, while the pressure plate'52 is sandwiched between the sizing plate and the clamping plate; As shown, the. standard is provided with a plurality of locking members 54 project received in the recesses defined by the locking .members, whereby the plate issecurely locked in position on the base. The plate 52v likewise is provided with a pair of ears 52a and 52?) which are received between these projecting locking members so as to lock this plate in position. Theclamping plate is secured over'the other two plates by means of three studs '55 which'are passed through the clamping plate so as to be received in the projecting portions 54, while all of the plates are further secured to the base by means of a bolt 56 which is passed through apertures provided-in the plates and received in the base.

The sizing plate 51, as shown, has a considerable length, and a width substantially equal to the width of the ribbon-like material 27 being wound (Fig: 6). The lower surface of this sizing plate bears directly on the" upper surface of the material passing beneath. it. The pressure "plate 52 bears against-the side areaof a substantial length .of the material fed. to the :windingv head, and projects downwardly 'for a 'considerabledistance below the path of movement of the material. The pressure plate is forced against the side of the material 27 which is being fed to'the winding head by means of I a suitable pressure device which applies. pressureat the lower end of theplate. to force it ing'hea'd and a similaraperture provided in the site side of this path of movement.

lying between the plates.

arbor 25. One end of thisrod is passed through .an aperture provided for it'in the lower end of the pressure plate and carries a collar 62 bearing against the plate. The opposite end of this rod passes througha bushing 63 providedi on the winding head. It will be observed that if the pressure rod be moved inwardly of the winding head, that is, toward the left, as viewed in Fig. 6, .the pressure plate will be drawn inwardly againstthe portion of the ribbon in the winding head. If the force which-is applied to draw the rod inwardly be released the pressure. plate by reason of its inherent resiliency will spring out to release the ribbon. The pressure plate together with the sizing plate effectively prevent buckling of the ribbon during the winding operation.

It is preferable that the length of the material 27 directed from the supply spool 28 to the feeding device be placed under a slight ten- .sion. This is accomplished by means of a pressure device arranged to apply pressureto that portion of the material between the feeding device and supply roll. This pressure device comprises pressure plates 64 and 65 arranged to clamp the material between them. The plate 64,

as shown, isrigidly mounted on the base 11 on one side of the path of movement of the material, wliilethe plate 65 is mounted for movement toward and away from the plate 64 on the oppo- The plate 65 is mounted on one end of an actuating rod 66 which is slidably mounted in a supporting frame 6'7 attached to the base 11. This frame comprises two spaced upright arms 68 provided with apertures '70 (only one of which is shown) in which the rod is slidably received; Interposed between the outer arm 68 and a nut 71 threaded on the rod intermediate its ends is a compression spring '72 preferably surrounding the rod. It will be observed that the tension of this spring applies a force to the rod tending to move the plate 65 toward its cooperating plate 64 so as to apply a pressure to the ribbon 27 This, of course, applies a tension to the ribbon as it is being drawn toward the winding head by the feeding device. The pressure plate 65 is drawn to release the material 27 by means of a lever 73 provided with a forked end that is pivotally secured to the 1 outer end of the rod 66 and arranged as shown to engage the adjacent arm 68 when the arm is raisedfrom its dependent position, shown in Fig. 3, to its extended position, shown in Fig. 1, to withdraw the rod and plate 65.

tively hard material, such as tool steel.

It will be understood that in the operation of Preferably, the plates 64 and 65 will be formed of a relathe machine thus far described, the feeding device with the ribbon 2'7 clamped to it will be moved forwardly toward the winding head so as to feed thereto a predetermined length of the ribbon. During this operation, as has been pointed out, the plates 64 and 65 will be in position to apply a suitable tensionto the ribbon.

arm 23 which is carried by the segmental plate .21, and by a pair of associated stop members.

rod is provided with handle means 76 whereby its position can be adjusted. It will be observed (Fig. 5) that the stop is mounted in the path of movement of the arm 23 so as to permit the winding head to rotate a distance sufficient to bend the material 27 through an arc somewhat greater than the are it is intended the bend shall assume in the finished winding so as to compensate for the inherent tendency of the resilient material to spring back toward its original position. In the case illustrated, that is, when an elliptical coil is being formed, the stop will be adjusted so as to permit the head to bend the material about the arbor through an are somewhat greater than 180, the arc of motion, of course, being determined by the resilient characteristics of the material being wound.

As the winding head is rotated to bend the material, the material will gradually be drawn forwardly by the motion of the winding head under the sizing plate 51 and through the pressure plate 52, this motion of the material being permitted because the feeding device will have .been released. During the bending operation,

the jaw 41a will effectively grip the material to carry it around with the head, while the sizing and pressure plates will effectively prevent buckling of that portion of the ribbon adjacent to and being bent around the arbor.

. After the head has been rotated through the.

be moved forward to feed another length of the material to the winding head after which another turn will be formed, as was the previous turn.

The pressure plate 52 has an additional func-' tion, viz., to automatically strip or remove the turns as they are wound. As shown, the lower edge of this plate is provided with a cam-like surface 77 arranged so that as the winding head is rotated to form successive bends or turns, the formed turns, as they are rotated by the winding head in its operation in forming another turn, will engage the stripper cam surface 77 and will automatically wind themselves outward- 1y from the winding head. The wound turns thus fed outwardly are received on a suitable stationary supporting member '78.

It is to be noted that the straight lengths of material fed to the winding head and the size of the turns formed by the winding arbor determine the lengths of the short and long axes of the elliptical turns. These, of course, may be varied by changing the length of travel of the feeding plate and by substituting winding arbors having different diameters. If turns of larger or smaller diameter be desired it is merely necessary to provide arbors having the appropriate diameter. Also arbors of different lengths will be provided so as to accommodate materials of various thicknesses; and likewise, various sizing plates 51 will be provided to accommodate materials having different widths and thicknesses.

It is also to be understood that coils can be formed in ourmachine having different shaped turns merely by adjusting the arc through which" the winding head is rotated and by adjusting the feed of the feeding devices.

The feeding plate 31, the feeding clamping member 34, the winding head clamping jaw 4111., the clamping pressure plate 52 and the winding head all'are automatically operated through successive'cycles of operation, each cycle including the steps above described. To effect this, the various elements of the machine are provided with'fluid actuating motors. As shown, the winding head actuating rack 14 is connected directly to the piston rod 80a of a fluid actuating motor 80 provided for the winding head; and the feeding plate 31 is connected to the piston rod 81a of a fluid actuating motor 81 by means of a lever 82 pivoted intermediate its ends and secured at one end to the piston rod and at its opposite end to the feeding plate. two motors, it will be observed, are arranged to be operated in both directions by fluid under pressure. The clamping member 34 of the feeding device is arranged to be operated to its clamping position with the feeding plate in its initial feeding position, i. e., its position remote from the winding head, by means of a fluid motor 83'; this motor is mounted on the base 11 and is so arranged that its piston rod 83a when moved forwardly from its cylinder engages the clamping member 34 to clamp the ribbon to the feeding plate. The actuating stroke of this motor is effected by means of fluid admitted to the motor cylinder under pressure, while the idle stroke of the motor is effected by means'of a compression spring 831) arranged, as shown, under the'piston and between the piston and the adjacent cylinder head. The jaw clamping member 41 is moved to its clamping position (shown in dotted lines in Fig. 1) by means of a fluid motor 84 and is operated, as will be pointed out in greater detail hereinafter, to its releasing position (shown in solid lines in Fig. 1 and in dotted lines in Fig. 2) by means of a fluid motor 85. The piston rod 84a of the motor 84 is arranged to directly engage the operating lever 47 provided for the jaw to apply the jaw, while the piston rod 85a of the motor 85 is arranged to engage the lever 47 to release the jaw through the medium of a pivoted lever 86. These motors '84 and 85 are similar in their construction to the motor 83 in that their actuating strokes are eifected by means of fluid admitted to their cylinders under pressure, while the idle strokes are effected by springs 84b and 85b. The pressure plate 52 is operated to its pressure applying position by means of a fluid motor 87, the piston rod 87a of which is connected through the medium of a pivoted lever 88 to the actuating rod 60 provided for the pressure plate. Thismotor is substantially identical'in its construction to the motors 83 and 84.

These fluid motors are provided with suitable valve control means whereby the "fluid underpressure for operating the motors is suitably controlled. g

The rack or winding head actuated motor 80 is controlled by means of a valve mechanism 90 comprising a main valve 91. This valve is provided with an inlet manifold 92 shown in section in Fig. 2 as two chambers; it is to be These masses understood, however,"that the inlet manifold is a single chamber; 'The' left-hand end c zf'thecylinder of the 'rnotor'lo communicates with the intakemanifold through a pipe 93 and'a cham- 5 her 94,fwhile' the'right-hand end of the cylinder communicates with the intake manifold by means of chamber95 and a-conduit 96. valve mechanism further comprises a of Valves 97 and 98, the'valve 97, as shown, con- 1O trolling a port between the-chambers 92 and 9 chamber 92a'nd the 9K1 95. stems 'of' thesefvalves project from the valve casing and are arrangedto be operated by a lever 100 pivotally mounted at its center arranged to be operated somwhat like a walla ing beam so that when operated to one posi-' tion, shown 'inFig. 2; it will actuatethe valve 98 to provide communication between the chambers 92 and 95 and thus admit underpressure frorn the manifold 92 to the right-hand endof the cylinder-of the motor 80; whereas if it isoperated in the opposite direction will operate the va1ve 97 to thechamhers Q2 and 94 and allow the valve 98 to close; this opera- --tion, it will 'be observed connects the leit 'hand end offthe motor cylinder to the supply manifold and allows the right-hand end to exhaust to theatmosphere through the open chamber It will be observed'that' the conduit 9 is pro- -videdjwith two branches 96a and 96b shunting each' other. Wtihin the" conduit portion 96b is arrangeda stop cook or valve iv ile in: the portion 96a is arranged'a check verve 96d arranged'to close against pressure cylinder 40- 80.", A' valve 93a, similar to the vaive 96c learranged inithe conduit93 These'valves are provi dedto;ontrolthespeed or" the fluid motor 80.

It is esse f'alinl some-Leases order toprevent bre alrageof the material to thelwindin'g' head that the winding 'headbe moved at controlled uniform spe ed. T 'efiected'by means of the valve's; In the'operation of this portion of the mechanism, it will be understood that the stopcoblrsGSafand gQ-Sc will headjusted -so that the proper speed is obtained in "the power stroke,that-is when the piston being forced from left to right." 'During this movement of the pls tol'lfllhelall" on'its Tight is can ed to exhaust-thinughthe stop cool: 96c arranged in the conduit 96b heoausetheconduit sea will he closed by the 'checlr' valve 95d. This causes a baclc'pressure on 'the right sideof the piston] and causes the piston to at unitorn speed, however, on tl e'return stroke or" the pis- 66' ton; air will he allowed to the checkfvalve into; the" ri ht hane cylindenso as tooause the turn eifected at a considerably higher'spepower stroke.

5 The main valve mechanism operated by means 'ofjga 331K015 valve mechanism 161. "As

of the mainvalve 1 is'provided" with'an ac'tnating motoriiofl, fluid being Controlled. tothe oppo te ends of the cyls of the "pilot valve shownf'the operating lev 70: irider of this jinotorby r ea" mechanism;f '1hi-is pilot valve mech n sm. com-,

prises an intake manifoldlogwhich is connected 7 s inder through the conduit 126.; This operation 1 of the valve effects an actuating'stroke of the motor." 'Wh'cn the valve is-returned'to ,its'low'er L through conduits loa and 105 were opposite I ends fofthe' motor cylinder 1 i2., "1hese conduits 7 are controlled' oy meanso'f valve'slOS and 107.

this position thevalve, however, the upper end of the cylinder of the motor 83 communi- GENES .t nby means of an electromagnet 111. This magnet is sufficiently strong when energized to attract the arm 108 against the force of the spring 11o, whereas when it is deenergized the lev i will be actuated by the tension of the It will be observed that when either of these valves is open to provide communication between the intake manifold and its associated controlled and of the cylinder of the valvefmo I tor 1G 2, its associated port communicating with 1 the atmosphere will be close d, while the other" valve will'close the opposite end of the cylinder to the intake manifold and will open it to the In this manner the fiuid'supplied for operating the main valve is atmosphere. to the motor 102 controlled. I

A suitable source of fluid supply 112; such as air under pressure, is controlled hy'a valve 113 v and communicates with the intake manifold 92' of the main valveby means of a conduit 114.- and with the intake manifold 103 of the pilot valve by means of conduits 115, 116, and 117, as clearly shown in Fig. 2.

:Ehevalve 118 for controlling the fluid motor" 81 1:: an ordinary piston valve controlling conduits 129 and 121 communicating with the opposite ends of themo'tor cylinder. The space between the piston valve heads is supplied with air underpressure through the conduit and o, a conduit 1ZZ,"-While"the opposite ends of the lit valve cylinder communicate with the-atmos- I phere through exhaustconduits 123. The pis ton valve is biased meansof a springas shown, towardthe lower end of its cylinder, i. e.,: to a position for admitting air :to the motor. cyl nder to ctuate the motor 81 to return the d ng plate to initial feeding position, and p ovi d with an electromagnetlM arranged when energiz.ed to move the valve to the upper end of cylinder to admit to the motor 81 i tocausea feedingstrok'eoi the feeding plate. Q'llhe valve mechanism 125 for controlling the iiuid'supplied to the motor 83 to cause an actuating stroke thereof of the piston type and controls a pair of passages 12d and 127 commu ug with one end, the upper end, of the or Fluid is supplied to the valve chest of thisvalve mechanism by means of, the fluidconduit 116', and as shown; the valve is biased to lower position, as shown inFigQZ, by means i so to cut oii'the intakello. In"

with arc-exhaust passageway 128 through the conduit 126. The valve is arranged to .105?

/ actuated to the other end of itsfcylinder by means-of an electromagnet 130. It will'be ob served that'when the valve movesto this on of the cylinder theupper end or the motor cyl p inder will he closed to the exhaust 128, whilethe'j145" valve in open communication betweenthejin f take conduit 116 and the upper endof the cylin its closed position.

position, the upper end of the cylinder is opened to the exhaust 128, thereby allowing the motor to be actuated by the spring 831) arranged below the piston.

, The motors 84, 85, and 87 are provided with valveQmechanisms 131, 132, and 133 similar in construction to the valve mechanism 125 provided for the motor 83. The motor 84 is supplied with fluid under pressure through the conduits 115, 134, and 135, while the motor 85 is supplied directly from the conduit 115, and the motor 87. through the Conduits 115, 134, and 136.

The energizing circuits of the above-described valves are controlled to effect a predetermined sequence of operation of the motors which they control, and hence of the elements controlled by the motors so that the above-described cycle of operation of the machine is effected. This sequence of operation is effected by means of a switch 140 which is arranged to be actuated to its closed position by a latch element 140a carried by the piston rod 81a of the feeding device motor 81; a switch 141 mechanically connected with the switch 140 through the medium of a link 142 and arranged to be closed in re' sponse to the operation of the motor 84 in applying the jaw 41a, and switches 143 and 144, the former being arranged to be operated by an actuating member 145 carried by the winding head actuating rack 14 and the latter to be operated by the rack. The switch 141 is provided with a latching device 146 arranged to lock it This latching device is operated to its releasing position by the operation of the motor 85 in releasing the jaw 410. through the medium of a link 14'? connected to the latch and with the pivoted lever 86.

The electromagnetically operated valves are provided with a suitable source of electrical supply 150 controlled by a main switch 151.

It is believed that a description of the operationof the apparatus as a Whole will clarify the operation of the valves and their associated motors. A complete description of the operation of the winding machine will, therefore, be given at this point. Let it be assumed that themain air valve 113 has been opened to admit air under pressure to the system and that the controlling switch 151 has been closed to connect the energizing circuits of the electromagnetically operated valves to the electrical supply source 150. Referring more particularly to the diagrammatic view shown in Fig. 2, it will be observed that when the switchI151 is closed, a circuit will be completed for the electromagnet 124 of the valve 118 provided for the motor 81 from the lower conductor of the supply source 150, through the switch 151, the closed switch 144 which will be held closed by the rack 14, it being understood that the rack will be in the position shown in Fig. 2 at the beginning of the winding operation, and thence through the operating coil of the electromagnet 124 to the upper conductor. of the supply source. The energization of this circuit operates the valve to admit air to the. left-hand end of the cylinderof the motor 81. In response tothis operation, the motor moves the feed slide 31 from its position shown in Fig. 4 toward the left to feed a predetermined amount of the material 27 to the winding head; it will be understoodthat at some time previous to this operation, the clamping member 34 of the feed device will have been operated to clamp the material to the feed'slide. During this operation of the motor 81 the actuating element 140a will be carried toward the right, as viewed in-- Fig. 2 and will engage the switch 140 to close it. It will be, observed that this switch is allowed to close independently of the connected switch 141 by reason of a slotted connection 152 provided between the link 142 and the switch 140. It will be'observed that when this switch closes it completes an energizing circuit for the electromagnet of the valve 131 provided for the motor 84. This operation admits air under pressure to the upper end of the cylinder of the motor 84 which thereupon operates the clamping lever 47 tomove the jaw 41a to its clamping position. The clamping lever 47 in being moved toits clamping position, 7

shown in dotted lines in Fig. 1, engages the actuating element of the switch 141 to close this.

switch, the switch then being held in its closed. position bythe latch 146. As the switch 141 is being closed, the link142 will operate the switch 140 to its open position, thereby eifectinga de-' energization of the valve 131. This operation allows the air which has been admitted to the motor 84 to be exhausted to the atmosphere, thereby allowing the piston-rod 84a to be retracted for the next operation of thismotor.

The switch 141 in closing completes energizing circuits for the valve 133 provided for the motor 87 and for the electromagnet 111 provided for the valve mechanism of the motor 80. The valve mechanism 133 in response to its energization causes air to be admitted to the motor 87.

which then operates through the lever 88 and actuating member 60 to cause the clamping plate 52 to apply pressure to the length of material 27 adjacent the winding arbor. The electromagnet 111 in being energized causes the valve 101 to connect the lower end of the cylinder of the main valve operating motor 102 with the supply manifold 103, while the opposite end of this cylwinding head to move in a counter-clockwise direction from the position shown in Fig. 4 tov This operation of the winding head bends the material 27 around the position shown in Fig. 5.

the'winding arbor and through an arc whichis determined by the setting of the stop member 74.

As the rack 14 starts to move toward the right to efiect the above described winding operation, the switch144 is allowedto open, thereby effects ing'a 'deenergization of the electromagnet 124.

provided for the V3.1V6 1l8'0f the feeding plate motor 81. This operation admits air under-pressureto the right-hand end of the motor cylinder 1 and as a resultthe feeding plate is returned to its initial position, shown in Figs. 2 and 4. It

will be observed, therefore, that as the winding head starts to rotate, and consequently starts to draw the material 27 forwardly from the feeding plate, the feeding plate practically simultaneously therewith is caused to move backwardly-toward its initial position. These twooperations, as has been pointed out, contribute to effect an automatic release of the clamping member 34.

As the winding head completes its winding stroke, that is, as it arrives at the stop 74, as shown in Fig. 5, the member 145 carried by the rack will engage the switch 143 to close it.

the valve 125 provided for the motor83 and the operating coil of the valve 132 provided for the motor. 85.. The valve 125 thereby is op.- erated to admit air under pressure, to the mo tor 83 which operates to apply the clamping jaw 34 to the material 27 to again look it to the feedingplate. The energization of the valve 132 allows air under pressure to be admitted to the motor 85vvihich is operated .to force, the lever 86 into engagement with'the clamping lever 47,

which has been rotated by the'winding head to the dotted line position shown in Fig. 2,

and from its position shown in Fig. 8 to its positionshown in- Fig. 9. Themotor Sh ner/es th'e'lever 47 a suflicient distance to release the jaw 41a. 7

The lever 86 in being moved to release the jaw 41a also releases the latch l lfi so as to allow the switch 141 to open This operation of the switch effects a deenergization of the operating coil of the valve 133 provided for the pressureplate operating motor 87 and the elec trom'agne't 111 provided for the valve, mcchanism of the winding head operating motor 80.

The valve 133in operating in responseto its deenergization allows the air which hasbeen admitted tothe cylinder 87 to effect the application of the pressure plate 52-to exhaust will be observed by reason of the above describedoperationsthatthe. winding head first will caused to disengage the material which has been wound and then will-.bereturned from thepo sition shown in. Fig.5 to its-initial wind} mg position shownin Fig. 4.

The motor in returning the winding head .2 to its initial position, moves the rack 14 toward the left thereby allowing the'switch 143 to open. The switch 143 in opening efiects a deenergization ofthcoperating coils of the valves of the motors 35 andSS. This allows the motor to, return the actuating lever 86 to'its initial position, shown in Fig. 2, and likewise aliowsthe' piston of the motor 83 to return to. its initial position, shown in FigLZ. When the rack arrives at the left hand endof its stroke, as

' :shown in Fig. 2, inother words, when the winding-head has been returnedto its initial position, shown in Figs. 3 and 4, the switch ma /ii again be closed so as to reenergize the circuit for the electromagnet 124 provided for the valve of the feeding plate motor 81. This operation,

' as before, causesthis motor to operate thefeeding plate in its feeding direction toward the winding head. The motor 81 in thus operating the feeding device recloses the switch 140 to effeet the operation of the motor 84 .to apply the jaw 41a to the material fed to thewinding head,

and-so on, the abovedescribed' cycle of opera ion isv repeated until the desired number of turns have been formed. .Fig. 7 illustrates the winding head in. position to form a turn, and

the position the wound coil assumes at this stage-.

of the winding operation. It will be umierstood that during the winding operation .the turns as they are formed will windv themselves; outersl r 6n. e vin ro b;v1 es nf of.

the fact that they will successively engage; the stripper cam surface 7'7 provided. on the pres? sure plate 52.

In order to-stop the operation of the machine, it is merely necessary either to close the main valve 113 orwtoopenthe switch 151.. V, I

,By suitably adjusting the stop member '74 in accordance with the resilient characteristics ofv the material being wound, each turn of the winding will be. bent through anarc somewhat greater than the arc it is intended it shall assumo in the finished coil so as to compensate for the spring back tendency of the material. Thus, the material will bebent through such an I arc that when the material springs bacl; the straight lengths of the ellipse will be formed parallel toeach other and the longitudinal axes of the turns will lie in the same plane. 7

While we have shown a particular embodiment of our invention, it will be understood, of course, that we do not wish to be limited thereto sincemany modifications may be made, and we, therefore, contemplate by the appended claims to cover anysuch modif cations'as fall within the true spirit andscope of'our' invention.

What we claim as new and desire'to secure by Letters Patent of the United States, is: V i v 1. A machine for bending resilient materials and, the like comprising a winding arbor, a rotatable winding member for bending said material about said arbor, means for feeding said materialito said winding member, means on said winding member for gripping said material to said member, means for applying and reieasing'lli) said gripping means and means for moving said winding ,member and controlling the motion thereof whereby said material turned through an arc substantially greater than the arcthrough which it is desired to bend said material so as 115,,

and the like into. a ,coil comprising an arbor, a i

movably mounted windinghead operably associated with said arbor, means for feeding said material to saidwinding head, clamping means on said head for engaging said material towind it about said arbor by ,the movement of. said 125.

compensate for the inherent tendency of said v material to spring back. toward its original position, and interlocking means between said ,feed-,

ing means, said clamping means and said'meansfor imparting motion to said head so that said members are operated in a predetermined sequence.

3. Apparatus for. winding resilient materials, and the like into, a coil comprisinga winding arbor, a winding head, means mounting said winding head for rotation about an axissubstanesl ifl tially coincident with the axis of said arbor, 55.. means for feeding said material .tosaid winding head in; substantially equal increments, Jaw

.means on said head for clamping said material 1 thereto, and m ans ,for rotating said head 5 through an arc greater thanthe arc through which it is desired to formeach turn of said coil so. as to compensate for the inherent tendency of said materialto spring back toward its orig- 1 a ;p0s on..1;-.. r

4. A coil winding machine comprising a winding head, means mounting said winding head for rotation on a substantially fixed axis; a wind-' or ing arbor operably associated with said winding head, means for feeding the material to be wound to said winding head in substantially equal increments, means on said head for engaging said material to wind it about said arbor as said head is rotated, stop means controlling the arc of movement of said head, motive means for rotating said head and operating said feeding means means controlling said motive means so as to effect a predetermined sequence in the operation of said winding head and said feeding 5 means and means jointly responsive to the operation of said feeding means and said winding head controlling said engaging means on said head to engage and release said material. 5. A coil winding machine comprising a wind- FZO-"ing head, means mounting said winding head for rotation, means for feeding the material to be wound to said winding head in substantially equal increments, means on said head for clamp- ,ing said material, means for rotating said head through a determined arc of motion, means jointly responsive to the operation of said feeding means and said means for rotating said head controlling the operation of said clamping gneans to clamp and release said material, a winding arbor operably associated with said head, whereby said material is turned about said arbor when said head is rotated through said are of motion and means for removing the turn automatically as they are wound.

6. Apparatus for winding ribbon-like resilient materials and the like edge-wise into a coil comprising a winding head, means mounting said head for rotation, means for rotating said head back and forth through a determined arc 40 0f motion, means for feeding said material to said head in substantially equal increments, jaw means on said head arranged to grip said material fed to said head and clamp it to said head, 7 means for tensioning the length of material fed to said head, a winding arbor operably associated with said head so that said 'material is turned about said arborwhen said head is turned in one direction through its arc of movement and guiding means for the material, fed to said head arranged to prevent buckling of said material during the winding operation.

7. A machine for winding resilient materials and the like into a coil comprising a winding arbor, a winding head operably associated with said winding arbor, .means for rotating said winding head through a predetermined arc of motion, feeding means for said material comprising jaw means arranged to grip said material and means for moving said jaw means to feed said material to said winding head in substantially equal increments, jaw means on said winding head for gripping the material fed to said head so as to clamp it to move with said head through its arc of movement whereby said "material is turned about said winding arbor, said feeding jaw means being arranged to automatically.-release said material at the start'of the winding movement of said head andmeans automatically releasing said winding head jaw means when said winding head has been moved through its winding arc of movement.

8. Apparatus for winding ribbon-like resilient materials and the like edgewise into a coil comprising a winding arbor, a winding head, means mounting said winding head for rotation on anaxis substantially coincident with the axis of said winding arbor, power operated means for rotating said winding head, means for feeding said material 'to said winding head in substantially equatincrements comprising a feeding plate, means mounting said feeding plate for reciprocatory motion toward and away from said Winding head,'power operated means for reciprocating said plate, jaw means for gripping said material to said plate and power operated means for applying said jaw means, second jaw means, carried by said winding head'for gripping the material fed thereto whereby as said head. is rotated said material is wound about said winding arbor, power means for operating said second jaw means to grip said material, and also'to release said material upon the completion of the Winding motion of said winding head and power operated means for confining the length of material fed to said head Wherebyit is prevented from buckling during the winding operation.

9. Apparatus 'for winding resilient metallic materials and the like into a coil comprising. a winding arbor, a winding head, means mounting said winding head for rotation on an axis substantially coincident with the axis of said winding arbor, power operated means forrota'tings said winding head, means for feeding said material to said winding head in substantially equal increments comprising a feeding plate, means mounting said feeding plate for reciprocatory motion toward and away from said winding head, power operated means for reciprocating" said plate, jaw means for gripping said material to said plate and power operated means'for applying said jaw means, second jaw means carried by said winding head for gripping the material -fed thereto whereby as said head is rotated said material is wound about said winding arbor, power means for operating said second jaw means to grip said material, and also to release said material upon the'completion'of the winding motion of said winding head, and control means for establishing a predetermined sequence in the operation of said power operated means.

10. A coil winding machine comprising a winding member, a fluid motor for operating said winding member to effect a winding operation and for returning said member for a subsequent winding operation and means controlling said fluid motor so that said winding member is, moved at a substantially uniform speed when effecting a winding operation and is returned at a higher rate of speed.

11. A coil winding machine comprising a movably mounted winding head, means for feeding the material to be wound to said winding head, a fluid motor connected to operate said winding head and means controlling the I motion -im parted to said winding head by said fluid motor.

12. A coil winding machine comprising a rdtatably mounted winding head, means for feeding the material to be wound to said head in substantially equal increments, means on said head for engaging a portion of the material fed thereto to move said portion with said head as the head is rotated, a winding arbor operably associated with said winding head sothat the material moved with said head is turned about said winding arbor, afluid motor for operating said head and adjustable stop means-for limiting the arc through which said fluid motor operates said winding head. N 7

13. A coil winding machine comprising a rotatably mounted winding head, a winding arbor 158 its" .operably associated with said head, means for rotating said Winding head, means for feeding the material to be wound tosaid winding head, means on said .head arranged to engagethe material fed thereto so that as said head is rotated said material iswound about said arbor and interlocking. control means between the wound to said head :in substantially equal. in-

crements, a fluid motor for, operating said feed.-

ng .device, electromagnetically operated valves. controlling said fluidmotors, switch; means controlling said electromagnetically' operated valves ,andmeans controlling said switching means .in accordance with theoperationsof said motors so as to effect a predetermined sequence of operation between said motors.

15. A machine for winding edge-wise .wound coils of ribbon-like. resilient material comprising a Winding. arbor, a winding head, means mounting said headfor rotationon a fixed axis sub.- stantially coincident withthe axisofsaid arbor, a gear arranged to rotate with said .winding head, a rack meshing withsaid gear, a fluid motor connected to-operate said rack; whereby motion is imparted to said winding head,-a jaw membercarried by said head for movement to a position adjacent saidhead' and to. a position L n sixth fluid motor to apply said pressure plate and also to effect theoperation of said first remote .from said head; fluid motors arranged to operate said jaw between said positions, a feed plate for said. material mounted for .movement toward and away from said. winding head, said feed plate comprising jaw -means arranged to engage said material and -move it toward "said winding head as said plate moves toward said head and to release-said ribbon automatically upon opposite relative movement between said ribbon and said feed plate, a fluid motor controlling the operation of said second jaw means to grip saidribbon, a'fluid motor connected to operate said feeding plate toward and away from'said winding head, a clamping plate arranged to be pressed against the area of a substantial length of said material passed to said winding head to prevent buckling of said material while being turned about said arbor, a fluid motor connected to force said plate against said material, electromagnetically operated valves controlling the fluid supplied to said fluid motors, switching means for controlling the energizing circuits of said electromagnetically operated valves and means operated by certain of said fluid motors for controlling said switching means to effect a predetermined sequence of operation between said motors.

16. A machine for winding'ribbon-like resilient, metallic materials and the like into elliptical edge-wise wound coils comprising a winding arbor, awinding head rotatableon an axis substantially coincident with the axis of said arbor, a fluid motor mechanically connected to rotate said winding head about its axis, means for feeding the material to be wound to said head comprising a feeding plate, means mounting said feeding plate for reciprocatory motion between a position remote from said head to a position adjacent said head, a second fluid motor mechanically connected to reciprocate said feeding plate,-a membercarried by said plate arrangediin oneposition of said member to clamp; said material to said plate whereby as said plate is moved from its remote position to its position adjacent'said winding head a predetermined length of said materialis fed. to said winding head and a third fluid motor arranged tooperate said clamping member to clampsaid materialzto, said plate when said plate is in its d remote position, said clamping memberbeautomatically released upon the occurrence of an opposite relative movement between-said piate and said materiaLajaw movably mounted on. said winding head between a position to clamp said material to said head and areleasing position, afourth fluid motor arranged to operate said jaw to its clamping. position when said winding head isin its initial winding position and a fifth fluid'motor arranged to effect a release of said jaw when said winding head is in the final position after a turn has been formed, a plate arranged to bear on the area of a sub stantial; portion of the length of said material fed to said head so as to prevent said material from buckling during the winding operation, a

sixth fluid motor mechanically connected .to

apply a pressure to said clamping plate to bear f on saidrlength, means dependent upon the oper- .ation of said second fluid motor in moving said feeding plate to its position adjacent saidwinding head for effecting the operation of}. said fourth fluid motor to apply saidwindinghead jaw to clamp said material to said head,means dependent upon this operation of saidfourth fluid motor for effecting the operation of said fluid. motor to rotate said head to wind the material about said arbor, means dependent upon the operation .of said first fluid motor in rotating said head to wind said material for effecting the operation of said second fluid motor to return said feeding plate to its :remote position,;and upon said windinghead arriving at its said final winding position, for effecting the operation of saidiifth fluid motor torelease said winding head jaw and for effecting the operation of said third fluid. motor to-sapply, .the feeding plate motor in returning'said winding head to its initial position for, effecting the operation of said second fluid motor to operate said feeding plate to feed said material to said winding head.

1'7. .A machine for winding resilient materials and the like comprising a winding arbor, a winding head operably associated with said winding arbor, means for rotating said winding head, feeding means for said, material comprising clamping means arranged to grip said material and means for moving said clamping means to feed said material to said winding head in substantially equal increments, clamping means on said head for gripping the material fed to said 1 45 head so that it is moved with said head about said winding arbor, means responsive to the operation' of said feeding means for applying said second named clamping means to grip said material and means responsive to the operation of means for feeding said'material to said winding head, "means for clamping said material to said head, means for operating said clamping means to clamp and release said material and means responsive to the operation of said clamping means controlling" said operating means for rotating said head to initiate the operation of said head when said clamping means is operated to clamp said material to said head.

'19, A machine for winding resilient materials and the like comprising a winding arbor, a winding head operably associated with said winding arbor, means for rotating said winding head,

means for feeding said material to said winding head, means for clamping said material to said head, means for operating said clamping means to'clamp and release said material, means responsive to the operation of said clamping means controlling said operating means for rotating said head to initiate the operation of said head when said clamping means is operated to clamp said'material to said head and means responsive to the operation of said head for operating said clamping means to release saidmaterial after a turn has been wound.

20. A machine for winding resilient materials and the like comprising a winding arbor, a

winding head operably associated with said winding arbor, means for rotating said winding head,

'feedingmeans for said material comprising clamping means arranged to grip said material and means for moving said clamping means to feed said material to said winding head in substantially equal increments, clamping means on said head for gripping the material fed to said head so that it is moved with said head about said winding arbor, means responsive to the operation of said feeding means for applying said second named clamping means to gripsaid material, means responsive to the operation of said winding head for' releasing said second said second named clamping means to grip said material controlling the head rotating means to initiate the operation thereof to rotate said'head, means responsive to the operation of said head for releasing said second named clamping means when a turn has been wound'and for initiating the operation of said head rotating means to return said head to its initial winding position and means responsive to the operation of "said winding head to said-initial position controlling said feeding means to effect the operation thereof to feed another increment of material to said winding head. r v r a 21. A machine for winding resilient materials and the like comprising a Winding arbor, a winding head operably associated with said winding arbor, means for rotating saidiwinding head, means for feeding material in substantiallylequal increments to said head, means for operating said feeding means, means, for clamping said material to saidhead and for releasing it,- operating means for said clamping means and interlocking means between said operating means for said head,:said feeding means and; said clamping meansfor establishing a predetermined sequence of operation between them.

, 22. A machine for winding resilient materials and the like comprisingia winding arbor, a'winding head operably associated with said winding arbor, means .for rotating said winding .head, means for feeding said material to said head,

jaw means on said head arranged to grip said material to said head,'means for operating said jaw means to grip and release said material, a clamping plate operably associated with said head so as to apply pressure to, the length of material supplied to said head to prevent its buckling during the winding operation, means for operating said plate to clamping and releasing positions, means responsive to the operationof said jaw means to gripsaid material controlling said clamping plate operating means to move said plate to its clamping position and means responsive to the operation of said winding head controlling said operating means to release said clamping plate when a turn has been wound.

, REGINALD O; EATON.

ETI-IAN VARS;.

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