US709179A - Machine for winding drum-armatures. - Google Patents

Description

No. 709m.

(No Model.)

WITNESSES E Patented Sept. IS. 11902. H. scs-amz.

MACHINE FOR WINDING DRUM ARMATURES. lflcation filed Sept. 17, 1960. Renewed Feb 20, 1902.

'a Sh eels-Sheet I.

WmV WJMP Patented Sept. I6, @902.

H. SCHULZ. MACHINE FOR WINDING DRUM ARMATUBES.

1 (Application filed Sept. 17, 1900. Renewed Feb. 20, 1902.) Ma Modei.) a Sheets-Sheei 2.

IN VE N TOR Nu. 709,519. r H, smamz.

, fiiAfiHINE FOR WINDING DRUEW ABWKTURES.

Patented swam, 19.102.

(Appliciztion filed Sept. 17, 1 900. Renewed Feb. $0, 1902.)

8 Shaets-Sheet 3.

m Model.)

agi;

v v r 1 l WITNESSES FEEWFQ. Federated Sept 16, I902.

H. SEHULZ. EMWi-EENE NM? WHMNNG AERMTURES.

ial.

(Applicqtion fillad Sept. 1.7. 1900. Bahama Feb. 20, 1902.

8 Sheets-8heet 4.

WITNESSES Eff/A N0. 709,5?9. Patented Sept.v l6. I902.

H. $BHULZ.

MACHINE FOR WINDING DRUM ARMATURES.

' I (Application filed Sept. 17, 1900, Renewed Feb. 20, 1902.)

(No Modl.) s Shasta-$heet 5.

Patemfafi Sept. 56, 11902. H H. $6HULZ. MACHINE FOR WINMNG DRUM ABPflATUBE-ZS.

.(Appliatiouflleci Sept. 17, 1900. Renewed Feb. 20, 1902.)

8 Sheats-$heei .6.

m W n13 w w w m "110. 709,09. P atented Sept. l6,- i902.

. n. SCHULZ.

' MACHINE FOB WINDING DRUM ARMATUBES.

( Application filed Sept. 17, 1900. Renewed Feb. 20, 1902.)

a Sheets-Sheet i (No Model.)

AJTO EYS INVENTOI? lllllul m. 7o9,|79. I Patnten Sept. as, I902.

H. SCHULZ.

' MACHINE FURWINDING DRUM ARMMTURES.

' I (Application filed Sept. 17, 1900. Renewed Feb. 20, 1902.) (No Model.) 8 Sheets8heet 8.

vemv 5E I== Qw w RN m UNITED STATES PATENT OFFIC HENRY scnULZ, oEN w YORK, N.

AoH E Foe vvmome DRUM-ARMATURESE'V} SP ECIIFICATION forming part of Letters Patent No. 709,179, dated'Septeinher :16, 1962;: Application filed September 17, 1900. Renewed February 20, 1902. Serial No. 94,928,. on hotter) To aZZ whont it 111,001,. concern.-

Be it known that I, HENRY Sonunz, a citizen of the'United States, residing in the oily of New York, borough of Bronx, in the State of New York, have invented certain new and useful Im-provementsin Machines for Winding Drum-Armatures, of which the following is a specification.

This invention relates to an improved machine for winding armatures'of the drum or Siemens type in a uniform, reliable, and effective manner, so that the expensive handwinding is dispensed with and the operations of winding the diiferent coils, forming the loops at the ends of the same, turning the armature on its axis, stopping the machine in case of breakage of the wire and when all the coils are wound on the core, are automatically erformedfand for this purpose the invenz'e tipn consists of a machine for windingdrumarmatures which comprises means for intermittently rotating the core of the armature,

a crank for winding the wire successively into the grooves of the armature with the required number of turns for each coil,1neans for intermittently reciprocating the shaft of the winding-crank, so as to permit the windingcrank to clear the ends of the armature-shaft at each rotation, a pivoted finger for forming the loops at the ends of each armature-coil,-

means forvreversing the motion of thewindi ng-crank, so as to form said loops, means for withdrawingthe loop-formingtinger at the propertiine, an automatic stop device in case of the breaking of the wire, and a stop-motion for stopping the machine when all the coils are completely wound on the cores.

The invention consists, further, in certain details of construction and combinations of parts, which will be fully described hereinafter and finally claimed.

In the accompanying drawings, Figure l is ,ja plan view of myimproved machine for Winding drum-armatures. Fig. 2 is a vertical lengitudinal section on line 2 2,'Fig. 1, showing through the adjustablecenter foii'sn'pporting one end of the armature-shaft. Fig. dis a rear elevation of the machine draw'n'on a largerscale and shown partlyi'n section Fig. 6 is'a-vertical transverse section" onlineo (3, Fig. 1. Fig. 7 is a detail top view ofithe releasing-lever of'the stop-motion in case of breakage of the wireuu'higs. '8 and 9 are details of thestop device for reraining'the clutch' of the shaft of the winding-crank in mesh during the reverse motion of the same when forming the loop between two adjacent coils. Figs. 10, 11, and 12 are plan views of theloopforming finger and its actualii'ig'mechanism, showing the finger imits different positions for forming and releasing the loop at the end of each coil. Figs. 13 audit are respectively a front elevation, partly inisect'ion, andasi-de elevation of theloop-lormingtinger audits actuatingmechanism. Fig.15isadetaithorizontalsection on line 15 15,Fig. 13. Fig'dii is a vertical transverse se'ctionthrough the supporting center of the armature-shaft on line 16 16, Fig. 4.. Figs. 17 and 18 are detailsofthc mechanism for adjusting said center. Figs. 19 and 20 are respectively a front elevation anda plan View, partly in seotiomof thegear for reversing the motion of the winding-crank when the loop at the end of eaelrcoil is to be formed. Fig. 21 is a-"de'tailvertical section through the fulcrumfofi therevei'singdever on line 21 21, Fig. 20: Fig. 22 'istopview of the slide-bar for transmittiug'inotion from the reversing-gear toother cooperatihg parts of the machine; and Fig. 23 isa-detail vertical transverse section through the clutch member on the shaftof the wiuding'crank, taken on line 23' 23, Fig. 2.

Similar letters of referenceindicate' corresponding parts. 1

Referring to the drawings, A rep resents the bedplate of my improved, machine for winding dru m-arm atu res. I On the bed-plate A are supported two uprightstandards A ,\vhich are provided with journal-bearings for the main d rivin g-shaf t SE (On theanamdrivingshaft is arranged a'step shapedpulley'P, to which motion is transmitted jbylla suitable d riving-belt. A friction-cl utch C is arranged in connection with thepuiley I, as shown in Figs.' 1 and 3, said friction clu'tcli being actuated by means of a'sliding cone (JQwhich is splined to theshaft'S and adapted io'h e shifted thereon, so that the friction-clutch engages the driving-pulley or releases the same,

vaccording as the machine is to be operated or ism hereinafter to be described.

The winding-crank and its aciuatingmecha-nism.'lo the 'front end of the driving-shaft S is applied a bevel-wheel b, which meshes with two bevel-wheels 1) D which are placed loosely on a stationary sleeve or th'imble D and retained thereon by means of shoulders and by collars fitted into the recesses of the li ubs of the bevel gear-wheels b bias shown clearly in Fig, 2. The sleeve or thimbleD is mounted on a tubular shaft S, which is located at right angles with the main shaft S and supported in bearings of upright standards A To one end-0f the tubular-shaft S is applied the spool S on which the wire to be wound on the armature-core is wound, said spool being retainedon the end of the shaft S by'means of a conical screw-nut n, which enters into the center bore of the spool S and a clamping-nut n, that enters into the opposite end of the spool, said not it being screwed home on the threaded end of the shaft S, so as to hold the spool in position thereon and permit it to freely turn thereon as the wire is fed to the armature-core to be wound. To the shaft S is applied adjacent to the spool S a curved arm D, one arm of which extends over the spool parallel with the same for supportinga spring-actuated tension-- plate D by means of rods (1 while the opposite arm is provided with a guide-roller (Z for the wire, the wire passing over the roller (1 to the guide-roller (1 located in a recess in the tubular shaft S, then through the interior of the shaft to a guide-roller (Z located in a recess in the opposite end of the shaft, thence over a tension-roller d and guide- 1'ollerd on the winding-crank D which crank is attached to the inner end of the tubular shaft S, as shown clearlyin Fig. 2. The tension-roller d is supported on a springactuated shank, which acts in case of breakage of the wire as an automatic stop in connection with a stop device hereinafter-to be described. From the guide-roller d the wire passes between two guide-rollers d? at the end of the winding-crank D H) the armature-core E.

- The shaft E of the armature-core E is su justed in the closed rear end of the adjustder E able cylinder E in'l'orward or backward di The inner end of the center spindle e is provided with a disk-shaped head e for rection.

supporting "the center 6 steadily'in the interior of thelongitudinally-adjustabie cylin- NVhen the armature-shaft is short, it may be necessary to move the center considerably forward', andin this case the adjustable cylinder E is also adjusted toward the stationary center supported in the-upright standard A by a worm 6 which is supported in. suitable bearings of a ring-shaped frame e, that extends around the cylinder E said worm meshing with a worm-thread on the cylinder. der E can be adjusted in one direction or the other. After the cylinder is adjusted in forward or backward direction the center 6' is adjusted by the center spindle 0 which is operated by means of a button or knob e at the rear end of the same, as shownin Fig. 4.

The reversing-clutch ofthe winding-crank.- Between the bevel gear-wheels b 11 that are supported loosely on the exterior sleeve or thimble D, is arranged a sliding clutch D which can be moved into mesh with either one of the gets-wheels U11 according as the winding-crank is to be moved in one or the opposite direction. The clutch D is splined to the exterior sleeve or thimble D and shifted on the same in eitherdirection by ashifting fork Dithat engages diametrical antifrictionrollers on the clutch and that is supported on an upright arm D, which is located in a recess of a slide-bar D (Shown in Fig. 2 and in detail in Fig. 522.)- The upright arm B Y turnin the worm e the cvliu-' D is applied by a rectangular recess to a A square boss supported on a transverse pin in the recess of the slide-bar, as shown in Fig. The slidebar D is actuated by a fulcrumed lever D which is pivoted at its frent end-to'the end of the slide-bar D and which is provided at itsrear end with a sliding and spring-actuated sleeve D, that is guided on said fulcrumed lever, said sleeve being provided with a projection nose (1 that is engaged by a pin 61 on a disk 61 ,10 which a slow rotary motion is imparted by atrain of transmitting gear-wheels d cl (1 61 d from a wormwheel d", that is attached tothe bevel gearwheel I), said worm-wheel meshing with the first Wheel d of said train of gear-wheels, as shown in plan viewin Fig.1 and in detail in Fig. The n u mber of gearwheels and the num ber of teeth of the same are so proportioned that the fulcrumed lever D is actuated by the pin (1 after the required number of turns for each coil have been wound on the'grooves of the armature-core. Each coil is composed of a predetermined number of turns,'according to the size of the armature, the clutch the armature'core by the winding-crank C.

For preventing the abutting of the end of the winding'crank I) against either end of der 7) and an interior shoulder 71 ofthe sleeve D forming the abutments for a helical spring which is interposed between the twoshoulders, said spring serving for returning the tubular shaft S after it has been moved in backwarddirectionto its normal position. On the shaft S is located, adjacent to the lefthand standard A a collar i*, by means of a splined set-screw 1?, said collar being provided said nose being provided with a' threaded shank that is adjusted by a screw-nut 1' which is retained in position by a recess in. the top part of the standard A, as shown in By turning the screw-nut i in one Fig. 2. or the opposite direction the tapering nose i can be adjusted forward or backward, so as to control thereby the distance through which the tubular shaft S and winding-crank D are moved backward whenever one of the antifriction-rollers i is brought in contact with the nose. The adjustment of the nose '6 corresponds to the radius of the armature-shaft and the distance for which the winding-crank has to be moved, so as to'clear the ends of the armature-shaft for each turn of the wire wound around the armature. The antifriction-rollers 'i are held in contact with the taperingnose duringtheirpassage over the same by the helical spring 11 the hollow shaft and winding-crank being moved backward by the rollers '13 and returned to their normal position required for winding the turns of the coils by the helical spring .'When all the predetermined turns ofa coil have been wound on the armaturecore, the slide-bar D is shifted by pivoted thereto.

the actuation of the fulcrumed lever 1') by the train of gear-wheels. The shifting of the slide-bar D produces the shiftingof the clutch .D into mesh with the bevel gear-wheel biand the turning of the armature on its axis for the required distance, so as to bring a new pair of grooves in the path of the end ofthe windingpawl-holder l is'pivoted to ah adjustable keeper 1, near the end of the arm L, and to a 1.? threaded shank.

pivot-bolt Z on the standard A, and provided at its lower end with two pawls L ,which mesh with an exterior ratchet-wheel L on the hollow cylinder E By the forward motion imparted to the crank-arm k by the oscillating motion of the shaft S one-of the pawls L actuates the ratchet-wheel and turns the same for a distance of one tooth, while during the return motion of the crank-arm k the second pawl L 'actnates the ratchetwheel andmoves it likewise for the distance ofone tooth,which turns the armature-core on its axis, so thatits next set of coil-groovesis placedin line with the end of the winding-crank. 'For tu rni-ng the armature E one end of the armature-shaft E is connected with the cylinder E by a clamping-ring r, that is made of two semisections which are pivoted to a pin 0" on the front end of the cylinder E and firmly clamped to the armature-shaft by a bolt and clamp-nut 0' passing through the end of the semisections,

as shown'im Fig. 4. This clamping connection compels the shaft of t hearmature to follow the rotary motion imparted to the cylinder 1 by the pawl-and-ratchet mechanism, so as to intermittentlyturn the arm atu re-core for the required distance when all the turns of the preceding coil have been wound on the grooves. The ratchet-wheel is provided with twice the number of teeth as there are grooves in the armature-core, so that the two successive actuations of the ratchet-wheel move the armature-core sufficiently for bringing the next pair of grooves into line with the end of the winding crank. The hub of the ratchetwheels is splined to the cylinder,-so as to be longitudinally adjustable thereon, but prevented from shifting axially on the cylinder E The pawl-holder- L consists of two plates that are applied to gudgcons Z on the keeper l and to the transverse bolt l supported on alug Z" on the top of the standard A the boltacting as a fulcrum for the pawl-holder, so as to produce the proper pushing action by both pawls in the same direction by the oscillations int parted to the crank-arm and pawl-holder.

' The loopfiirming finger and its actuating mechanism.'1o the shaft S is applied in front of the crank-arm k a second crank-arm m, to which is clamped a lug m by a suitable set-screw, which is connected by an intermediate pivot-link m with a slide-rod m that is guided in perforated lugs m on a platform M, which carries the finger-actuating mechanism. The platform M is capable of adjustment in two directions by being mounted on dovetailed guide-plateswfi, which are supported on a threaded shank m, that is vertically adjustable in a hollow upright standard A as shown in. rlgs. 13 and 1-5. -The th readed shank m" of the lowermost dovetailed plate m' is retained by a set-screw m in position in the standard A and isadjusted by means of a nut m which is located in a recess of the standard and which engages The lower part of the sank m is made of a smaller diameter than proper adjustment is made.

the upper part and is guided in the lower hollow portion of the standard, so as to permit the vertical adjustment of the threaded shank in the standard A andthe rigid clamping of the same'bythe set-screw after the The vertical adjustment of the threaded shank, as well as V the lateral adjustment in two directions by means-of the dovetailed guide-plates m 112 enables the loop-forming mechanism supported on the platform M to be accurately adjusted relatively to the winding-crank and the armature-core, according to the difierent (1 amv v eter and length of the latter. The slide-rod m carries two sleeves m 221 which are retained in position upon its reduced end-by a screw-nut m, as shown in Figs. 10, 11, and 12. 'The sleeve-m is provided with two projecting lugs m and the sleeve 711 with one projecting lug n, the two lu'gs of'the sleeve m serving to engage one end of afulcrumed lever m, the opposite end of which engages the recess of a',laterally-shiftable plate M,

- which carries a curved extension-arm M that extends over the top of the armature-core par- 'allel with the axis of the same and that is provided with a grooved lug 'm at its end for guiding the wire fed to the armature-core by the winding-crank. The plate M is guided by suitable lugs on theplatform M, one of the guide-lugs being located in a rectangular *recess in the main portion of the plate M, as

shown clearly in Figs. 10, 11, and 12.. The plate Mcarries a fulcrumed lever M that is.

provided at one side of its fulcrum with a beveled heel m and at the opposite side 05 its fulcrum with a pivoted and spring-actuated heel m, having abeveled face. The lugs of the sleeves m? m? serve to actuate successively by the levers M and in the slide-plate M and the loop-forming finger N. The longer arm of the lever M is connected by apivotrod m with the loop-forming finger N, that is pivoted to the curved portion of the extension-arm M of the plate M, said finger serving to hold the'wire placed over the same by the reversal of the motion of the windingcrank after one full coil is wound on the core before the winding of the next coil is commenced. Whenever one coil is completely wound on the armature-core, the oscillating motion of the shafts produces the shifting of the slide-rod m in the direction of the arrow, Fig. 12; and simultaneously therewith the shifting of the lugs of the sleeves 1/1" m so as to move first the loop-forming finger into the position shown inFig. 11, so as to release the loop of the coii previously formed. .The finger N is then moved back into the path of the wire of the coil justformed, which wire is conducted around the end of the extension-arm M as shownin Fig. 12. As soon as the new loop is formed it is held by the ,finger N, while simultaneously the armature- I coreis turned by its pawl-and-ratchet mechv anism for the proper distance on its axis so as to expose the next set of grooves to the winding action of the winding-crank. The return motion of the finger after the,loop is formed is accomplished by the return motion of the slide-bar D under the influence of the spring applied to the fulcrum of the actuating-lever D. The return of the slide-barto its former position also returns the loop-forming finger N to its normal position (shown in Fig. 10) audshifts the clutch D into mesh with the bevel gear-wheel b, so that the mo.-

tion of the winding-crank is reversed and the next coil wound into the next set of grooves of the armature-core.

It is necessary time accurately the duration of the reverse motion of the windingcrank D so as to control the proper formation of the loop of the wire at the end of each coil. This timing of the reverse motion of the winding-crank D is obtained by means of a stop-plate bi, that is attached to the bevel gear-wheel W, as shown in Figs. 1, 2, and 6.

l The stop'plate Z)" has a segmental portion b the edges of which are beveled, which segmental portion is engaged by a spring-actuated stop 1), that is pivoted to the slide-bar D between the arms D and 7c, as shown in Fig. 2, said stop 0* being normally held by its spring against a transverse pin ZJX of the slidebar D7, as shown in detail in Figs. Sand 9. The stop b has a beveled shoulder which is moved past the beveled edge of the segmental portion 11 when the slide-bar D is shifted by its actuating-lever D so that the stop I) is held by the tension of its springin contact with the-segmental portion so as to prevent the return of the slide-bar D until the segment 19 in following the rotation of the bevel gear-wheel b liberates the stop Z) and then permits the return of the slide-bar by the influence of the spring on the fulcrum of the lever. D into its normal position. The engagement of the stop I) with the segmental portion b is so timed that during it the loop at the end of each coil can be formed in a reliable manner, the shifting of the slide-bar D and the reversing of the motion of the winding-crank taking place as soon as'this is accomplished by the shifting of the clutch D and its reengagement'with the bevel gearwheel I), so that the turns of the next coil are then wound into the next pair of grooves of the armature. Y

The siojmnotzhna Two stop-motions are provided--one which is called into action on the breaking of the feed-wire, the other when Ltension of.-the wire on the roller cl is released th'eshank-of the tension-roller is moved in,

,out ard direction, so as to strike the end of I" t top-lever R and release the shoulder r .1911 thesame from theshoulder 'r of a collar on the shaft of a weighted arm R. (Shown Fig., .I6 The. position of the stop-lever R ccuratelyregulated by means of a setrew 1' and returned intoraised position bya helical spring T the ends of which are connected, respectively, with the shorter arm .of' the stop-lever R and with the base of the standard,-as' shown in Fig. 6. The position of the projecting end T of the stop-lever is adjusted by 'a screw-nut 7- which engages the threadedshank of said projecting end. On the release of the stop-lever R from the shoulder 1" on the shaft of the weighted lever B the latter is dropped, so as to operate by a crank-armRh applied to its shaft, and an intermediate pivot-link R an elbowshaped lever B, which is fulcru med to a fork R, that engages the slide-cone C ofthe clutch O on the main shaft, as shown in Figs; 1 and 3, so as to shift the cone, release the clutch'from the driving-pulley P, and produce thereby the instant arresting of the motion of the main driving-shaft S. The stop'motion, by 40 which the motion of the machine is interrupt'ed when all the armatu re-coils are wound ont'he core; or, in other words, when the armature is completely wound, is also prod uced by the elbow-lever R the shorter arm of which is provided with a bevelededge 2?, that is engaged by a grooved sleeve 2, which slides on an upright crank-armv t, keyed to the shaft S said sleeve 2% being located adjacent to the beveled end of the elbowlever vRt.

5o The grooved sleeve t is beveled at both ends, sojasto readily pass over the beveled edge of .]thelbo w-le 'er B into engagement withth'e same. 4 The upright crank-arm i and sleeve t are engaged by the curved and recessed end 0fa"lever T, which is fulcrumed to a projecti iii g' ear on the standard A, as shown in Fig. f5, theopposite end of the lever being pro- "videdwith an adjustable lug 1 which is en- 'gaged by a lug t projecting from the ratchet- 6o wheel Won the cylinder E at each full rotation of the same, so as to actuate thereby the fulcruined lever T and produce by thelifting of thegroovetl sleeve the oscillation of the fulcrumed elbow-lever- R, and, thereby the '-;hifting of theslide-cone Q and theiarelea of the clutchfrom the driving-pulley P (sho in 'l igs; 1 and 5,),so that the m achinelis a1 spring and the centrifugal force in outward WOlllld on the a1'mature-co're.' II

Operation: My im proved macliine folr winding drnm-armatures'is operated as follows: The shaft of the armature-core to be wound is placed between the stationary and adjustable centers which support the shaft of the armature-core, the movable center being adjustable to the length of the armature-shaft in the manner before describedQsd that the matically stopped when all the I coils are armature-core is placed in the proper relative position toward the winding-crank and loopforming finger. The spool with the wire to I be wound on the armaturecore isthen placed in position on the end ofithe tubularshaft S, the wire being passed througlisaid shaftand over the guide and tension rollers'on the shaft and winding-crank between the rollers at the end of the latter. A loop isthenformed at the end-of the wire, and'this loop placedin position on the fingerand supporting arimso as to be supported thereon. The'machine is then started by moving the clutch on the main driving-shaft S into mesh with the driving-pulley P, which latteris then rotated by the belt, the shaft im arting by the bevel gear transmissions simu tan eously motion to both bevel-gears on the transmitting-shaft S. The clutch D is normally ifn mesh with the bevel-gear b, so thatimmediately rotary motion is transmitted to thetubnlarshaft of the winding-crank and to the latter, so-that the wire is wound into twodiametricallopposite recesses of thearmature-core. n alntermittent longitudinallyreciprocating motion; is imparted to the shaft of the winding-crank by the stationary cam whenever theend ofgthe winding-crank passes over the .ends of the armature-shaft, I turns are wound on the core, the slide-bar D7 is actu ated by the wormheartransmissionand fulcrn med leverD ,s0 that the clutchbetween the bevel-gearsis shifted-and moved-into mesh with the bevel gear-Wheel 17 This produces the instant reversingof the motion of theshaft and-winding-cra-nk, so that the loop is formed in connection with the finger and supportingarm of the same. During'the reverse motion of the Winding-crank t'he slide-bar D is retained by the segmental slop-plate b on the bevel gear-wheel 1) until the springactuated stop b in thesli de-barhas passed saidplatmwhen the slide-bar is immediately returned into its normal position by the -tension of the coilspring on the fulcrum of the actuating-lever D and thereby the clutch .D retu I'HBdiHtO mesh with the bevel-gear b", so-that the-motion of the winding-crank in the former direction is I When the required number of' resumed and the wire wound into the-next set of grooves. Sim ultaneously the armatu re-core tion of the same im arts the other half of its axial motion. As soon as the loop is formed and the armatureshifted on its axis the slidebar is permitted to return, so that the clutch is placed again'in mesh with the bevelgear' b, the regular rotation of thewinding-crank is resumed, and the winding of the turns of the next coil commenced. When the second coil is wound, the motion of the winding- .crankiis again automatically reversed long enough to produce the loop at theend of the coil, after which the third coil is Wound on I t the return of the slide-bar, and'so on until Patent, is' y all the coils are wound on the armature-core. Having thus described my invention, what I clai m as new, and desire to secure by Letters 1. The combination, with means for sup- I porting anarmatu re-core, of a winding-cran k,

means for feeding the coil-forming wire to said crank, and means for rotating said crank, substantially as set forth.

2. The combination, with means for supporting an armature-core, of a wii'iding-crank supported at right angles to thevshatt-of an armature-core supported by said means,

- means for'rotating said Winding-crank so that its end moves in a vertical longitudinalplane around the armature-core, and means for feeding the coil-forming wire from the crank 'to the core, substantially as set forth.

axis, of a. rotary winding-crank, means for feeding the coil-forming'wire to said crank,

- means for reversing the motion of the crank after a full coil is wound, and a loop-forming mechanism placed in the path of the wire on reversing the motion of thewinding-crank,

substantially as set forth.

6. The combination, with means for supporting an, armature-core, of a coil-winding t crank, a hollow shaft for the same, means for guiding the coil-forming wire through said shaft to the end of the crank, means for imparting rotary motion to the shaft of the winding-crank, means for reversing the motionof the winding-crank when a full coil is Wound,=and a loop-forming mechanism adapt- I ed to engage the Wire when themotion of the -.crank isgreversedso as to form a loop at the cndof each coil, substantially as set forth.

7. In machine for Winding drum-armatures, the combination of a windingcrank,

means for intermittently rotating an armatitre-core on its axis so as to present anew set of core-grooves to the winding-crank, means for feeding the wire to said winding-crank, means for rotating said crank, means for in-. terin'ittently reversing the motion of the winding-crank, a loop-forming mechanism,and-

means for intermittently actuating thesame so as to form a loop at the end of each coil, substantially as set forth.

-8. In a machine for winding drum-armatures, the combination of stationary and adjustable' centers for the shaft of an armaturecore, a cylinder for supporting theadjustable center, means for connecting said cylinder with an armature-shaft supported in saidoenters, means for longitudinally adjusting the cylinder, a'coil-windingmechanism, and. a pawl-'and-ratchet mechanism for intermittently actuating the cylinder so as to turn the armature-core on its axis for presenting a new set of grooves tothe action o'f'the wind ing mechanism, substantially as set forth.

' 9'. Ina machine .for winding drum-armatures, the combination, with a driving-shaft, of a second shaft supported at right angles thereto, a bevel gear-wheel at the end of the main driving-shaft, intermeshing bevel gearwheels mounted loesely on the second shaft,

a clutch device for moving the bevel gearwheel on the main driving-shaft.into mesh with either one of the transmitting bevel gear-wheels, a worm-gear transmissionopcrated by one of the bevel-gears, a fulcrumed lever actuated intermittently by said wormgear transmission, a slide-bar connected with said fulcru med lever and adapted for,'shjft- ,ing the clutch so astocause it to mesh with one or the other bevel gear-wheel for reversing the motion of the second shaft, and a coilwinding crank at the end of the second shaft, su'bstantiall as set forth'..

10. In a machine forwinding drum-armatures, the combination, With-a coil-winding crank, of a longitudinally-guided'and springactuated shaft for said crank, means for rotating said shaft, a stationary cam, and a oollaron the shaft providedwith antifriction rollers that are placed twice in, contact with the stationary cam for each rotation of said shaft so as to impart thereby twice longitudinally-reciprocating motion. to the Windingcrank during each rotation of the same, sub stantially as set forth.

11.- In a machine for Winding drum-armatures, the combination of a coil-winding crank, a rotary shaft to which said Windingcrank is applied, a sleevesnrroundingsaid tubular shaft, a helical spring interposed be tween said sleeveandshaft, aooll ar-onsaid shaft provided with antifiriction-rollers at diametrically opposite points, a stationary'cam for engaging said rollers twice at each rotation of the shaft so as to produce the reciprocation of the shaft and winding-finger of the shaft twice during each rotation, substam.

tially as set forth, Y

and means forimparting rotary motion to theshaft of the winding-crank, substantially as set forth.

13. In a machine for winding drum-armatures, the combination, with means for supporting the armature-core, of a rotary coilwinding crank, an intermittently-oscillating loop-formingfinger,a guide-arm for said 'finger, and means for shifting said guide-arm and oscillating the finger after a full coil is wound on the armature-core, substantially as set forth. I

14. In a machine for winding drum-armatures, the combination of means for supporting an armature-core,-a coil-windingcrank, a rotary shaft to which the winding-crank is applied, means forimparting rotary motion to said shaft in one direction, reversing mechanism for reversing the motion of the winding-crank after a coil is wound, a loop-forming fingerlocated above the armature,a guidearm for supporting the loop-forming finger, and means for actuating the arm and finger when the motion of the winding-crauk is reversed so as to form a wire loop at the end of each coil, substantially as set forth. I

15; In a machine forwinding drum-armatures, the combination, with a rotary coilwinding crank provided with. guide-rollers and a spring-actuated tension-roller for the wire to be wound, of a-releasing-leveractuated by the shank of said tension-roller, and a stopmotion operated by'said releasing-lever and connected by intermediate lever mechanism with a clutch on the main shaft, soas to arrest the motion of the machine on the breakage of the wire, substantially as set forth. r

16. In a machine for winding-drum-armatures, the combination of means for supporting an armature-core, a pawl-aud-ratchet mechanism for intermittently turning an armature-core supported thereby, a winding mechanism for winding the coils on the'armature-core, and a stop-motion for arresting the motion of the machine when all the coils are wound on the armature, substantially as set forth.

17. In a machine for winding drum-armatu res, a loop-forming-mechanism consistingof a curved, guidearm above the armature, an oscillating loop-forming finger supported on said guidearm, and means for moving the finger into the path of the wire for forming the loop in connection with-the end'of the guide-arm, substantially as set forth.

18. In a machine for winding drum-armatures, a loop-forming mechanism actuated after each coil is wound and consisting of a curved guide-arm extending over the armature-core, and loop-forming finger pivoted to said guide-arm, means for oscillating the fin ger for shedding'the loop of the coil last formed, and means for returning the finger into the path of the wire after the succeeding coil is formed for forming the new loop in connection with the end of the guide-arm, substantially as set forth.

19. In a machine for winding drum-armatures, a loop-forming mechanism actuated after each coil is wound and consisting of a curved guide-arm extending overthe armatu re-core,a loop-formin g finger pivoted to said guide-arm, means for oscillating the finger for shedding the loop of the preceding coil, means for returning the finger into the path of the wire after the succeeding coil is wound, for forming the loop over the finger and the end of the guide-arm, and means'for shifting the guide-arm finger, and loop forclearing the next pair of armature-grooves for winding the next coil, substantially as set forth..

20. In a machine for-winding drum-armamittently rotating an armature-core, of a coilwinding mechanism, means for reversing said coil-winding mechanism after each coil is wound, a loop-forming mechanism actuated during the reversing of the coil-winding mechanism, and a stop device for the reversing mechanism forcontrolling the reverse motion of the winding mechanism until the loop is formed, substantially as set forth.

In testimony that I claim the foregoing as IQO my invention I have signed my name in pressence of two subscribing witnesses.

, HENRY SCIII LZ. Witnesses:

PAUL GoEPEL, M. II. WURTZEI.

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