US3052418A

US3052418A - Stator winding machine

Info

Publication number: US3052418A
Application number: US732201A
Authority: US
Inventors: Henry J Gorski; Melvin F Bakke
Original assignee: LINCOLN TOOL AND Manufacturing CO
Current assignee: LINCOLN TOOL AND Manufacturing CO
Priority date: 1958-05-01
Filing date: 1958-05-01
Publication date: 1962-09-04
Anticipated expiration: 1979-09-04
Also published as: BE578325A

Description

SePt- 4, 1962 H. J. GoRsKl ETAL sTAToR WI'NDING MACHINE 11 Sheets-Sheet 1 Filed May 1, 1958 Sept. 4, 1962 H. J. GoRsKl ETAL sTA'roR WINDING MACHINE 11 Sheets-Sheet 2 Filed May 1, 1958 Spt- 4, 1962 H. J. GoRsKx ETAL 3,052,4l8

sTAToR WINDING MACHINE Filed May 1, 1958 11 Sheets-Sheet 3 l l 9 I l INVENTORS H.` J. GoRsKl E'r AL 3,052,418

sept. 4, 1962 STATOR WINDING MACHINE Filed May 1. 1958 ll SheetS-Shee'b 4 Sept. 4, 1962 H. J. GoRsKl ETAL sTAToR WINDING MACHINE Filed May 1, 1958 ll Sheets-Sheet 5 INVENTORS MM H Sept. 4, 1962 H. J; GoRsKl ErAL 3,052413 sTAToR WINDING MACHINE:

Filed May 1, 1958 11 sheets-

sheet

8 ,4 ffor'ne] Sept. 4, 1962 H. J. GoRsKl ETAL sTAToR WINDING MACHINE 11 Shee'LS-Sheei 7 Filed May 1, 1958 INVENT ORJ Henry J ors/r/ /Ve/vm Eak ke Affmw/ V7 SP' 4, 1962 H. J. G oRsK| ETAL 3,052,418

sTAToR WINDING MACHINE 11 Sheets-Sheet 8 Filed May l, 1958 Sept. 4, 1962 H. J. GoRsKl ETAL sTAToR WINDING MACHINE ll Shee'cs-Sheet 9 Filed May 1, 1958 Sept. 4, 1962 H. J. GoRsKl ETAL s'rA'roR WINDING MACHINE 11 Sheets-Sheet 10 Filed May 1, 1958 Sept- 4, 1962 H. J. GoRsKI ETAL STTOR WNDING MACHINE ll Shee'cs-Sheet 11 Filed May l, 1958 United States Patent O M 3,052,418 STATOR WINDIN G MACHINE Henry J. Gorski, Muskego, and Melvin F. Bakke, Milwaukee, Wis., assignors to Lincoln Tool & Manufacturing Co., Milwaukee, Wis., a corporation of Wisconsin Filed May 1, 1958, Ser. No. 732,201 8 Claims. (Cl. 242-1.1)

This invention relates to a stator winding machine and more particularly to an apparatus for efecting the Simultaneous automatic winding of a plurality of stator poles in an electric motor.

The stator winding machine of the present invention comprises a fully automatic machine adapted to be adjnsted to effect the simultaneous ,automatic winding of a plurality of substantially identical stator poles on Various sizes of cores.

The machine of the present invention is designed and constructed so that one operator can run the machine and produce a large number of accurately wonnd stators in quantities which have hitherto been impossible.

The primary object of the present invention resides in the provison of a new and improved stator winding machine which will effect the sirnultaneous automatic winding of a plurality of stator poles with assnrance that each pole will be provided with the Same number of turns.

A further object of the invention resides in the provision of a plurality of individually adjustable mechanisms whereby the speed of the machine may be varied in accordance with production requirements; the axial stroke of the Shuttle varied to .accommodate stator cores at different lengths, and the oscillating movement of the Shuttle varied in accordance with the number of wire receiving slots in the work at hand to insure the proper Simultaneous winding of a plurality of substantially identical stator poles on the Various Sizes of cores.

Another object of the invention resides in the novel means for synchronizing the axial and oscillating movements of the Shuttle in a manner to insure the proper Simultaneous winding of the several stator poles.

Another object of the invention resides in the novel means whereby the amount of the oscillating movement imparted to the Shuttle at the ends of its axial movement may be varied in accordance with the predetermined requirements of the particular stator so that the throw of the Shuttle is automatically and Sequentially increased upon the completion of a predetermined number of winding turns in a given pair of slots in the core.

Another object of the invention resides in the provison of counter means for controlling the periodic operation of the means for automatically Varying the amount of oscillating movement of the Shuttle in accordance with the dictates of the preset counter as predetermined by the requirements of the particular stator poles being wound.

Another object of the invention resides in the provision of an electrical system whereby the Various cycles of operation of the associated parts of the machine are under automatic control.

Other objects and advantages will become apparent from the following description of an illustrative embodiment of the present invention.

In the drawings:

FIGURE 1 is a perspective View taken from the left 3,.052,418 Fatented Sept. 4, 1962 ICC on the line 5-5 of FIG. 3, showing the associated relationship between the Shuttle reciprocating and oscillating mechanisms;

FIG. 6 is a front elevational view of the machine with part broken away to show the Operating means and a portion of the linkage under control of the counter for adjusting the extent of the oscillating movement of the Shuttle;

FIG. 7 is an enlarged Vertical transverse sectional View, taken on the line 7-7 of FIG. 5, showing the Operating cam for synchronizing the reciprocating and oscillating movements of the shuttle;

FIG. 8 is a Vertical transverse sectional View, taken on the line 8-8 of FIG. 7, showing the relationship between the Operating cam and its associated cam followers;

FIG. 9 is a Vertical transverse sectional view, taken on the line 9-9 of FIG. 5, showing in rear elevation a portion of the mechanism for adjusting the extent of oscillating movement of the shuttle;

FIG. 10 is a horizontal sectional View, taken on the line 10-419 of FIG. 9, showing the mechanism of FIG. 9 in top plan;

FIG. 11 is a Vertical transverse sectional view taken on the line 11-11 of FIG. 9 and including an additional portion of the linkage for adjusting the oscillating movement of the shuttle;

FIG. 12. is a Vertical transverse sectional view, taken on the line 12-12 of FIG. 5, showing oscillating yoke which is raised or lowered in response to the Controlled positioning of the means for automatically selecting the extent of oscillating movement of the Shuttle;

FIG. 13 iS a Vertical transverse sectional view, taken on the line 13-13 of FIG. 5, showing additional stroke adjusting linkage in the form of a Slide operatively associated with the oscillating yoke, shown in FIG. 12, together with motion transmitting means operatively connected to the shuttle;

FIG. 14 is a front elevational View of the means for adjusting the reciprocating stroke of the Shuttle;

FIG. 15 is a Vertical transverse sectional View, taken on the line 15-15 of FIG. 14, showing the .associated relationship at the stroke adjusting mechanism;

FIG. 16 is a diagrammatic View showing the Step by Step elevation of the means for altering the oscillating movement of the Shuttle;

FIG. 17 is a diagrammatic View showing additional means for altering the oscillating movement of the Shuttle with respect to the fixed oscillating movement of a driving shaft; and

FIG. 18 is a circuit diagram of the electrical controls f 1 1r effetcing the automatic cyclic operation of the mac me.

The embodiment of the machine, chosen for illustrative purposes in the accompanying drawings discloses a stator winding machine, constructed in accordance With the teachings of the present invention.

The stator winding machine comprises a unitary structure including a plurality of operatively associated mechanisms by which the Stroke and oscillating movements of the Shuttle may be properly adjusted, to meet the requirements of the work at hand, and their movements placed under automatic cyclic control to increase the amount of oscillating movement yof the Shuttle successively upon the completion of the predetermined number of turns of the winding in one pair of slots So that the next Series of continuous windings are disposed in the adjacent stator Slots having a greater distance between them. The cyclc winding operation will Continue under automatic control until such time as the desired number of turns of wire have been wonnd in the several stator slots of the core at which time -the machine will automatically Stop.

'The machine comprises a bed or base 30 upon which a main upright frame member 31 is mounted. The base 30 and frame member 31 are preferably comprised of weldments fabricated to the proper Size and Shape in the usual well known manner. The frame member 31 is substantially T-shaped and includes a front wall 32 and a rearwardly extending wall 33 which respectively form the support for various sub-assembled portions of the machine. Appropriate pieces of Sheet metal are applied to the base and frame members to enclose the Operating parts of the machine.

The general transmission for the machine (see FIGS. 4 and comprises an electric motor 34 mounted for transverse adjustable positioning on the base 30. The armature shaft of the motor 34 is provided with a pulley 35 which drives a pulley 36 of a speed reducer 37 through the medium of a V-belt 38. The pulley 35 on the armature shaft of the motor 34 is of the variable speed type so that the driving ratio between

pulleys

35 and 36 may be altered in accordance with the transverse adjustment of the motor 34 with respect to the fixedly positioned speed reducer 37. A multiple belt pulley 39 is secured to the power output shaft of the speed reducer 37 for driving a similar pulley 40 fiXedly positioned on the outer extremity of a drive shaft 41 through the medium of V-belts 42. Suitable idler rollers 43 mounted on adjustably positioned arms 44 serve as means for retaining the V-belts 42 in taut condition. The drive shaft 41 is journaled in suitable antifriction bearings located in the covers 45 carried by a casing 46 secured to the wall 33 of the upright frame member 31 in any approved manner. A cam 47 is disposed within the casing 46 and is keyed to the drive shaft 41. In order to prevent vibration of the drive shaft 41, by reason of the eccentric positioning of the cam 4-7 a counterbalance weight 48 is adjustably secured on the outer extremity of the drive shaft 41 adjacent the pulley 40.

The cam 47' provides the actuating means for controlling both the reciprocating and oscillatng movements of the Wire carrying Shuttle of the machine.

The mechanism for controlling reciprocating movement of the Shuttle (see FIG. 5) comprises a pair of cam follower rollers 49 carried by a yoke 50 which includes a pair of vertically spaced bars 51 journalled for reciprocating motion in bores 52' formed in bosses 53 which are formed integral with the outside cover 45 of the casing 46. An actuating rod 54 which is journalled for reciprocating movement lthrough the one side of the casing 46 has one of its ends secured -to the yoke 50 in any approved manner. The outer extremity of the rod 54 is provided with a coupling yoke 55 which is rockably mounted on the pivot pin 56 carried by one arm 57 of a bell crank 58. The other extremity of the arm '57 carries a yoke 59 pivotally mounted on a pin 60. The upper extremity of the yoke 59 is threadedly received in one end of a tie rod 61 the 'other end of which is provided with a` coupling 62 including an eye which is rockably mounted on the pivot pin 63 mounted intermediate the ends of a lever 64 which in turn is rockably mounted on a pin 65 supported between a pair of spaced ears of a mounting bracket 66 fixedly attached to the casing 46 which houses the cam 47. The other end of the lever 64 is bifurcated to afford a mounting means for a pair of axially spaced rollers 67 disposed on opposite sides of a tubular Shuttle 68. A pair of adjustably positioned aXially spaced collars 69 are mounted on the inner end of the Shuttle 68 in a manner such that their adjacent faces engage the opposite sides of both of the rollers 67 to provide a driving connection between the upper end of the lever 6'4 and the Shuttle 68. In fact, the pair of aXially spaced collars 69 form a slot within which the rollers 67 are free to move upwardly and downwardly to compensate for the arcuate movement of the free end of the lever 64 with respect to the lineal axial movement of the Shuttle 68. The fulcrum mounting for the bell crank 58 comprises a pivot pin 70 which passes through the outer extremity of an arm 71 of the bell crank 58 and has its outer ends journalled in a pair of laterally spaced ears formed on a bracket 72 which is fixedly attached to the upper surface of a sliding plate 73 provided with a groove 74 on each of its lateral sides. A plurality of ball bearings 75 are retained in desired cooperating relationship with the grooves 74 by means of marginally grooved positioning plates 76 that are fixedly secured to the upper surface of a saddle 77. The saddle 77 is mounted for rotatable adjustment about a horizontal axis formed by a pair of axially aligned pins 78 which pass through a pair of upstanding laterally spaced ears 79 formed on the saddle 77 and a pair of laterally spaced uprights 80 which form a portion of a mounting bracket 81 secured in fixed position on the bed or base 30 of the machine. One of the pins 78 has one of its ends keyed in one of the ears 79 and its other end provides a keyed mounting for a worm wheel 82 which meshes with a worm 83 having a shaft journalled for rotating movement in a pair of laterally spaced ears 84 carried by one of the uprights S0 of the mounting bracket 81. The outer end of the shaft of the worm 83 is squared to receive a crank (not shown) by which the angular position of the saddle 77 may be adjusted to alter the movement of Sliding plate 73 and the fulcium pin 70 of the bell crank 58, under action of the cam 47, to provide the required distance of reciprocating movement of the Shuttle 68 as determined by the length of the stator core at hand.

The mechanism for effecting the oscillating movement of the Shuttle 68 (see FIGS. 5-11-13) comprises a pair of cam follower rollers 85 disposed in proper spaced relationship on a yoke 86 which includes a pair of laterally spaced bars 87 journalled for reciprocating movernent in suitable bores formed in bosses 88 secured to or formed integral with the inside cover plate 45 of the casing v46. An actuating rod 89 which is journalled for reciprocating movement through the top of the casing 46 has one of its ends secured to the yoke 86 in any approved manner. The upper extremity of the actuating rod 89 is provided with a coupling yoke 90 which is rockably mounted on a pivot pin 91 anchored at one end of a lever 92. The other end of the lever 92 is keyed to a shaft 93 which is journalled for rocking movement in a pair of axially spaced fiXed supports, one of which comprises a fixedly positioned boss 94 secured to the bottom of a casing 95 and the other of which comprises a bearing block 96 secured to a casing 97 which houses the automatically controlled means for adjusting the extent of oscillating movement of the Shuttle 68. A crosshead |block 98 is fixedly positioned on the shaft 93 intermediate its end. The block 98 is provided with a pair of laterally spaced parallel bores 99 adapted to receive a pair of bars 100 having their lower ends Suitably anchored in a cross member 101 and their upper ends fixedl-y mounted in a cross member 102. The relative axial relationship of the bars 100 to the crosshead block 98 serves to alter the oscillating movement transmitted to the Shuttle 68 in a manner to be hereinafter more specifically described. A roller 103 rotatably mounted on one face of the cross member 102 is positioned in a groove 104 formed in the face of a lever 105. The upper end of the lever 105 is fixedly mounted on the outer extremity of a shaft 106 which is journalled for free rotation in the front and rear walls of the casing 95. A segmental gear 107 is keyed to the shaft 106 intermediate its ends. The tooth portion of the segmental gear 107 is in meshing engagement with a gear 108 which is keyed to a tubular member 109 provided with an axial bore 110 through which the hollow Shuttle 68 reciprocates. An axially extending slot 111 formed in the member 109 serves to receive and guide a roller 112 mounted for free rotation on a stud anchored in the hollow Shuttle 68. The roller 112 comprises the driving connection between the tubular member 109 and the Shuttle 68 to aosaais impart cyclic oscillating movement to the Shuttle 68 in response to the operation of the linkage disposed between the cam 47 and the tubular member 109.

The means for adjusting the extent of oscillating movement imparted to the Shuttle 68 (see FIGS. 9-13 and 16- 17) comprises mechanism mounted in the casing 97. The casing 97 comprises a hollow fabricated weldment secured in proper position on the inner wall 32 of the upright frame member 31 in any approved manner. The bearing block 96, in which one end of the shaft 93 is journalled, is disposed at the inner open Side of the casing 97. A pair of laterally spaced vertically disposed parallel guide rods 114i are fixedly positioned between the bearing block 96 and a portion of .the top of the casing 97. A sliding block 115 is guided for Vertical movement on the guide rods 114. The outer face of the slide Iblock is provided with a drilled hole 116 in which a stud 117 is fixedly anchored. The outer extremity of the shouldered stud 117 provides a mounting means for a roller bearing 118, the outer race of which forms a mounting means for one end of an open yoke 119 provided with a central aperture 121i' through which the shaft 93 passes. The lower closed end of the yoke 119 is also provided with a roller bearing 121 which serves as a mounting means for a stud 122 which is anchored in a hole 123 formed in the lower cross member 101 to provide the required Operating connection between the yoke 119 and the cross member 101. Vertical movement of the sliding block 115 on the guide rods 114i efifects the raising and lowering of the cross member 102 and its associated parts with respect to the crosshead block 93 which is fixedly positioned on the rock shaft 93 to vary the distance between the aXis of the shaft 93 and the roller 1193 to adjust the amount of oscillating movement transmitted to the lever 105 to thereby control the distance through which the shuttle 63 is oscillated.

The means for efiecting the adjustable Vertical positioning of the sliding block 115 (See PIG. 6) comprises a pair of

air cylinders

124, and 125 and their associated mechanism. The cylinder 125 is secured to the lower surface of the casing 95 adjacent one end thereof. 'Ihe cylinder 125 includes a piston having a tail rod 126 which extends through the bottom wall of the casing 97 and has its upper end threadedly anchored in a slide block 127 guided for Vertical movement on a pair of laterally spaced parallel rods 128 Suitably anchored in the top and bottoin parts of the casing 97. An inwardly projecting boss 129 disposed adjacent the upper end of the block t12'7 includes a pivot pin 130 on which one end of a connecting link 131 is rockably mounted. The other end of the connecting link 131 is rockably mounted on a pivot pin 132 mounted adjacent one end of a lever 133 which, in turn, is fulcrumed intermediate its ends on a stud 134 which is anchored in a hole 135 passing through the sliding block 115 to which the yoke 119 is rockably attached. The other end of the lever 133 carries a pivot pin 136 on which one end of a connecting link 137 is rockably mounted. The other end of the link 137 is rockably mounted on a pin 138 secured in an inwardly eXtending boss 139 formed on a slide block 140 which is guided for Vertical movement on a pair of laterally Spaced rods 141 mounted in fixed parallel relationship between the top and bottom portions of the casing 97. A stud 142 is threadedly anchored in the slide block 140 and extends downwardly therefrom through a suitable opening formed in the casing 97. The lower end of the stud 142 is attached to the upper extremity of a tail rod 143 which carries a piston housed within the cylinder 124, the ends of which are fixedly secured to mounting brackets 144- and 145. The mounting bracket 144 is secured on the inner wall 32 of the upright frame member 31 and serves to position the upper end of the cylinder 124 While the bracket fi 145 is attached to the base 30 of the machine and forms the support for the lower extremity of the cylinder 124.

The cylinder 125 is designed to assume two positions under the control of electrically operated valves, to be hereinafter more specifically described and the cylinder 124 is designed to assume three positions under the operation of electrically Controlled valves which will also be later described. Referring more particularly to the diagrammatic showing in FIG. 16, it will be noted that the sliding block '115 which carries the yoke 119` is capable of sequentially assuming as many as six different positions during a complete cycle of the stator Winding operation. The lowermost Operating position of the sliding block provides the shortest oscillating movement of the Shuttle 68 throughout the application of Winding a predetermined number of turns in one pair of Slots in the core. Upon the completion of the Winding of the predetermined number of turns in this particular pair of Slots, the sliding block 115 is elevated one step to effect an increase in the eXtent of oscillating movement of the shuttle 68 so that the next series of turns of the winding will be positioned within a second pair of slots in the core disposed at a greater circumferential distance apart than that of the first pair of slots. Upon completion of the winding of a predetermined number of turns in the Second pair of core slots, the sliding block 115 is elevated to its next Successive position wherein the throw of the Shuttle 68 is again increased to direct the winding of the next series of turns in a third pair of slots which are circurnferentially spaced a distance apart which is greater than the distance between the slots which were previously wound. This sequential winding disposed in adjacent pairs of slots continues automatically until the predetermined number of turns have been applied to the stator core at which time the machine automatically stops.

A core support 14,6 in the form of an L-Shaped bracket is fixedly positioned and secured to a face plate 147 which is fixedly attached to a pair of rearwardly extending parallel rods 148 that are journalled for axial movement in the front wall 32 of the main frame 31 and a rearwardly positioned partition 149. An Operating cylinder 15h disposed between the rods 148 and parallel thereto is provided With a piston and tail rod to effect the advance of the wound stator core upon the completion of the winding operation. One end of the cylinder 1511 is mounted on the inner surface of the front wall 32 of the upright frame member 31 and the tail rod is fixedly attached to the face plate 147 so that the admission of fiuid under pressure to one end of the cylinder Will effect movement of the face plate 147 and its associated core support 146 away from its normal position adjacent the front wall 32 of the machine upon completion of the stator winding operation. The admission of fluid under pressure to the other end of the cylinder 151D Will cause the face plate 147 to be returned to the position in which the stator core may be wound. The automatic control of this device will be described in connection with the discussion of the electrical control circuits.

The programming of the sequential cyclie operation of the mechanism for controlling and altering the extent of oscillating movement of the Shuttle 68 to effect the continuous winding of the poles by the application of the wires in selected pairs of stator slots is under the control of a counter device 152 which is driven from a bevel gear 153 keyed to the outer extremity of the drive shaft 41 to meshing engagement with a second bevel gear 154 keyed to a driven shaft '155 which actuates the counter device 152. It should be noted at this point that the gear ratio of the

bevel gears

153 and 154 is one to one so that each complete turn of the drive shaft 41 and the cam 47 which controls the reciprocating and oscillating movements of the Shuttle 68 will register a single turn on the counter device 152. The counter device includes means which are adjustably positionable to preset its operation in accordance with the requirements of the windings required in any nosa-118 core at hand. In practice and for the purpose of illustrating the operational characteristics of the counter, let us assume that thirty-five turns of Wire are desired to be applied in the first pair of circumferentially spaced slots in the core and that twenty-five turns of Wire are to be applied in the next two pairs of adjacent slots in the stator core and that thirty-five turns of Wire are to be applied in the fourth pair of slots in the stator core. With these predetermined requirements, the operator proceeds to position the control elements so that electrical contact will be sequentially established upon the respective completion of thirty-five, sixty, eighty-five and one hundred and twenty turns of the counter which indicate the identical number of cycles of operation of the shuttle 68. Upon the completion of the first thirty-iive turns, a portion of the electrical control circuit is closed to effect the initial elevating step of the sliding block 115 through the action of the first step of advance of the air cylinder 124 and its associated mechanism which is connected to the slide block 115. Upon completion of the application of the next twenty-five turns in the adjacent slots of the stator core, the second adjustably positioned control on the counter establishes an electrical connection to operate the tail rod 143 of the cylinder 124.J from its intermediate position to its upper extreme position wherein the slide block 115 is raised to its second step of elevation to effect the increased oscillating rnovernent of the Shuttle 68 through the medium of the previously described operating means. Upon the completion of the next twenty-five turns in the adjacent pair of stator slots, the third adjustably positioned control on the counter establishes an electrical connection which effects the simultaneous return of the tail rod 143 to its initial lowermost position and the elevation of the tail rod 12.6 of the cylinder 125 to its elevated position. This iadjusted positioning of the two

tail rods

143 and 126 results in the next step of elevation of the sliding block 115 to again increase the oscillating movement of the shuttle 68 to introduce the next series of continuous windings in the adjacent slots of the stator core which lie beyond 'those which have already been wound. Upon completion of the winding of the next thirty-five turns, the winding of the particular stator' pole chosen for illustrative purposes will have been completed and the machine will be automatically stopped.

The mechanism shown affords means for 'two additional series of windings, should the particular Work at hand make them 'desirable In the event that these additional windings 'are to be applied, additional adjustably positioned control means may be applied to the counter in accordance with the number of turns desired in each of the additional windings. Upon completion of the winding of the fifth 'bank of turns on the stator core, fthe -adjusta'bly positioned control establishes an electrical contact to eifect the e'levation of the tail rod 43 to its intermediate position with the resulting increased throw transmitted to the shuttle 68 through the slide block 115 land its associated mechanisms. Should an additional bank of turns be required the tail rod 143 is elevated to its extreme upper position through the operation of the -adjustably positioned control which is applied to the counter device 152. Summarizing the a'bove briefly, it will be noted that the first two elevating steps of the slide block 115 are eifected hy the retention of the tail rod 126 of the cylinder 125 in its lowermost position and the successive raising of the tail rod 143 to its intermediate land then to its uppermost position. The additional steps of elevating the slide block 115 are obtained by the initial raising of the tail rod 126 to its uppermost position and the simultaneous return of the tail rod 43 first to its lowermost position and then to its intermediate position and las-tly to its extreme upper position.

While the preceding description has defined the transmission and mechanical movements of the various associated elements, no particular emphasis has been laid on the fact that the present machine is adapted for and capable of the simultaneous winding of a plurality of pairs of circumferentially spaced poles on any given stator core. If four windings are to be simultaneously applied to a stator core, four separate Wire containers 156 equipped With the usual releasably retained covers and wire tensioning means |are positioned behind the machine. The four wires drawn from the respective containers are threaded through an opening 157 formed in the upper portion of the rear casing of the machine. The four wires are then trained over

pulleys

158, 159 `and 160 and then threaded through the hollow shuttle 68 of the machine. The

pulleys

158 and 160 are supported on adjustabily positioned arms 161 and 162 respectively which in turn are secured to the inner face of the wall 33 of the upright frame member 31.

While the majority of the electrical wiring and control for the automatic operation of the machine are housed within a compartment 163 located on the forward upper left hand side of the machine, it should be noted that several micro switches are located either on or adjacent certain motion transmitting elements of the machine. For example, a normally open micro switch 164 is mounted in any suitable manner adjacent a cam surface 165 formed on the drive shaft 41 adjacent the bevel gear 153. This micro switch serves to energize and actuate a stroke counter 166 which is positioned on the front end surface of the compartment 163 so as to 'be easily read by the operator. Another micro switch 167 which is normally open is positioned adjacent the lever 64. A bracket 168 including an adjustably mounted screw 169 serves as a means for engaging and closing the micro switch 167 when the actuating arm or lever 64 is in its rearwardmost position wherein the shuttle 68 is in its fully retracted position. The purpose and function of the micro switch 167 is to insure against the operation of an emergency stop button and also precludes any movement being transmitted to alter the degree of oscillation of the shuttle 68 unless the shuttle is in its fully retracted position. The positioning of the micro switch 167 in the electrical control circuit for the operation of the

air cylinders

124 and 125 insures against damage to either the needles or fixture holding the stator core either through malfunotioning of the machine or attempted inadvertent manual switching. An additional micro switch 170 is disposed in a position 'between the front face of the wall 32 of the frame member 31 and the rear face of the core support 14-6. This micro switch 170 is normally open for the purpose of precluding the operation of the machine unless and until the switch is closed by the proper positioning of the core sup-port 146. The proper positioning of the core support serves to close the micro switch 170 to place the circuit under the Operating control of 'the starting switch button.

Before entering into a description of the control circuits shown in FIG. 18, it is believed that certain purchased portions of the machine should be identified in a manner such that their detailed construction need no't he included in the present description of the machine. By 'way of example, the air cylinders 124, previously referred to, is a three position air motor model BYEM SC m'anufactured and sold by The Bellows Company, of Akron, Ohio and the air cylinder 125 is a two position air motor manufactured and sold by the same company under the model No. BNEM SOC. The Stepping relay diagrammatically illustrated in the electrical circuit diagram is of standard form and construction as manufactured and sold -by Automatic Electric Company of Chicago, Illinois. Another of these purchased items comprises a clutch-brake unit 171 of the electrical control type, such as model SOOPCB manufactured and sold by Warner Clutch Brake Company of Beloit, Wisconsin.

The power for energizing the several Operating mechanisms which control the Operating cycle of the machine is fed from a pair of power distribution lines 175 and 176 to supply current at the proper voltage to the several control mechanisms through appropriate wiring connections. The main control circuits are energized by the operation of solenoid actuated

relays

177, 178 and 179 which, in turn, are adapted to be energized or de-energized iby the manual manipulation of a start switch 180, a stop switch 181, an emergency stop switch 182 and a jOg switch 183. The solenoid actuated relay 177 includes a coil 184 and an armature 185 which carries a plurality of axially spaced

Vbridging connectors

186, 187 and 188 adapted to make or break electrical connection respectively between pairs of fixedly positioned

contacts

189, 190 and 191 respectively of

switches

192, 193 and 194.

Switches

192 and 194 are normally open and switch 193 is normally closed. The solenoid a'ctuated relay 17 8 is similarly constructed and includes a coil 195, an armature 196, bridging

contacts

197, 198 and 199 adapted to make or break electrical connection between the fixed contacts of

switches

200, 201 and 202 respectively. The solenoid actuated relay 179 includes a coil 203, an armature 204 and a pair of bridging

contacts

205 and 206 which respectively make or break the contacts of switches 207 and 208 which are normally open. Referring back to the solenoid actuated relay 178, it should :be noted that the switch 202 is normally closed and that the

switches

200 and 201 are normally open. One end of each of the

coils

184, 195, 'and 203 are in electrical connection with the power line 175 through a lead 209. The other end of the coil 184 is connected to one of the contacts of the switch 207 through a lead 210. The other end of the coil 195 is connected to one of the fixed contacts of the normally open switch 200 through a lead 211 which continues to one of the fixed contacts of the start switch 180. The other end of the coil 203 of the relay 179 is connected by a lead 212 with one contact of a micro switch 167 which is located adjacent the lever 64 and is in normally open position except when the lever `64 and the associated shuttle 68 are in their fully retracted positions. The second micro switch 164 is in series connection with the other contact of the micro switch 167 and the remaining contact of the micro switch 164 is connected by a lead 213 to the power distribution line 176. The micro switch 164, which is normally open, is 'located adjacent the drive shaft 41 and is actuated by the cam surface 165 to effect its closing operation on each revolution of the drive shaft 41 to energize the stroke counter 166 through a lead 214 which is disposed between the

switches

164 and 167 and directed to one terminal of the counter 166. The other terminal of the counter is connected through a lead 215 to the other power line 175. One end of a primary winding 216 of a transformer 217 is connected to the lead 215 and its other end is connected by lead 218 to the power line 176. One side of a secondary winding 219 is connected to ground through a lead 220 and the other side of the winding is connected to one contact of a micro switch 170 located on the front face of the wall 32 of the frame member 31. The micro switch 170 is normally open and is closed only upon 'the proper positioning of the core support 146. In the absence of proper core support positioning, the machine cannot be put intO operation. The other side of the micro switch 170 is connected to one of the fixed contacts 189 of the normally open switch 192 by a lead 221. The other contact of the switch 192 is connected to a lead 222 to

moveable contact arms

223 and 224, respectively, of the second and third level of a Stepping relay 225, the operation of which will hereinafter be more specifically described.

The operation of the clutch-brake device 171 is under the control of an electrical circuit which includes the switch 201 of the relay 178, switch 208 of the relay 179 and switch 193 of the relay 177. A lead 226 is disposed between one terminal of the clutch-brake device 171 and one fixed contact of the normally open switch 201 of the relay 178 and also one fixed contact of the normally open switch 208 of the relay 179. A branch lead 227 connects the lead 228 to one fixed contact of the jogging switch 183. The other .fixed contact of the jogging switch 183 is connected 'to the remaining fixed contacts of the

switches

201 and 193 through a lead 228. The remaining fixed contacts of the normally closed switches 193 and 208 are connected by a lead 229 to the other terminal of the clutch-brake device 171 to place the clutch-brake 171 under automatic control of the electrical system.

The switches 202 of the relay 178 and 194 of the relay 177 control the operation of the stepping relay 224 and the mechanism associated therewith to control the automatic operation of the cyclically increased throw of the shuttle 68. In order to insure the accurate operation of the Stepping relay 225, its actuating coil 230 iS supplied with direct current through the medium of a reotifier 231 which is supplied with alternating current through leads 232 and 233 which are respectively connected to the power distribution lines 175 and 176. The direct current output of the rectifier comprises a pair of leads 234 and 235. Lead 234 is connected to one end of the coil 230 and the other end of the coil transmits current through 'a lead 236 to one contact of the normally open switch 194. The other contact of the normally open switch is connected to the lead 235. A branch lead 237 which forms a continuation of lead 235 carries electrical current to a movable contact 238 of a switch 239. The periodic energization of the coil 230 effects the automatic opening of the switch 239 to effect the step by step advance of a shaft 240 in its rotating movement to thereby advance the

contact arms

223 and 224 together with arm 241 of the first level which are fixedly positioned on the rotatable shaft 240 of the Stepping relay 225. The fixed contact of the switch 239 is connected to the arm 241 of the first level of contacts of the Stepping relay 225 by means of a lead 242. A series of circumferentially spaced contacts 243, adapted to be successively engaged by the step by step advance of the arm 241 under the action of the periodic rotation of the Stepping relay 225, are connected by a lead 244 'which forms a branch lead 236 to establish an electrical connection through the medium of the switch 194.

A cam disc 245 mounted on the shaft 240 of the stepping relay 225 serves to periodica'lly effect the opening of an associated switch 246. The fiXed contact 247 of the vswitch 246 is connected by a lead 248 to one side of the stop switch 181 which is normally closed. The other side of the normally closed stop switch 181 is connected by means of a lead 249 .to one side of the micro switch 170 and the other side of the micro switch is connected by a lead 250 to one of the fixed contacts of the normally open 'switch 200 through a lead 251 which carries current to one side of the start switch 180. The lead 252 from the other side of the start switch connects with the lead 211 on one of the contacts of the normally open switch 200.

Referring back to the Stepping relay 2257, it Will be noted that the moveable contact arm 223 is in position to control the winding of the first bank of turns of wire in a pair of circumferentially spaced slots formed in the stator core. The same condition is true with respect to the rotatable contact 224 of the third level of the stepping relay 225. Upon completion of the winding of a predetermined number of turns on the stator core, the energized coil 230 of the Stepping relay is' momentan'ly deenergized. The de-energization of the coil 230 effects one step of advance in the rotational movement of the shaft 240 of the Stepping relay to simultaneously effect movement of the

contact arms

223 and 224 to their second position wherein they establish electrical connections which control the operation of the several valves mounted on the

air cylinders

124, and 150. The three position air cylinder 124 includes four

coils

253, 254, 255. and 256. The cylinder 125 includes two valve operat- 1 1 ing coils 257 and 258 to regulate its movement to either of two positions. The cylinder 150, which is also a two position device, includes electrically controlled valves under the operation of coils 259 and 250i. It should be noted that one end of each of the valve operating coils 253 through 260 is grounded through suitable leads. A series of circumferentially spaced contacts 261 are adapted to be successively engaged by the step by step advance of the armature 223. A similar series of circumferentially spaced contacts 262 on the third level of the stepping relay 225 are adapted to be successively engaged by the moveable contact 224 upon the step by step rotation of the shaft 240. The several spaced

contacts

261 and 262 are respectively connected through electrical leads to the appropriate coil which form the electrical control for regulating the movements of the pistons in the several cylinders. In the position indicated in the circuit diagram (FlG. 18) the piston in the cylinder 124 is in its retracted position and the piston in the cylinder 125 is also in retracted position so that the sliding block 115 which regulates the throw of the oscillating movement of the shuttle 68 is in its lowermost position wherein the extent of oscillation of the shuttle 68 is at its minimum setting. Upon completion of the winding of a predetermined number of turns of Wire in the first pair of slots in the stator core, the counter control mechanism interrupts the flow of current through the coil 230 to effect one step of advance of the shaft 240 with the resu'ltant advance of the

contacts

223 and 224 to their next Operating position Wherein the coil 254 is energized to effect the raisiug of the piston in the cylinder 124 to its intermediate position to increase the oscillating movement of the shuttle 68 so that the next bank of tums of Wire are deposited in the next pair of slots which are more remotely spaced than that of the first pair of slots. Upon completion of the winding of a predetermined number of turns of Wire in the second pair of slots, the counter again breaks the circuit through the coil 239 to effect the next step of advance of the shaft 240 and the

contacts

223 and 224 to their third position Wherein the coil 253 is energized to effect the raisng of the piston in the cylinder 124 Ito its extreme upper position to thereby again increase the oscillating movement of the Shuttle to deposit the next succeeding windngs in the next adjacent pair of slots in the core. Upon the completion of the winding of a predetermined number of turns in the last mentioned slots the counter again effects the breaking of the circuit through the coil 230 to again advance the position of the

contacts

223 and 224 to their next successive position wherein the tail rod of the cylinder 124 is returned to its lowermost position and the coil 255 is energized to effect the movement of the tail rod of the cylinder 125 to its uppermost position wherein the amount of oscillating movement of the shuttle is again increased to apply the next series of turns to an adjacent pair of slots in the stator core. Upon the completion of the winding of a predetermined number of turns in the last named slots, the counter again effects the breaking of the circuit in the coil 230` to effect the next step of indexing movement to the

contacts

223 and 224 wherein the coil 254 is again energized to effect the raising of the tail rod in the cylinder 124 to its intermediate position to again increase the distance of oscillating movement of the Shuttle to place the next series of windings in the next adjacent slots' in the stator core. Upon completion of the winding 'of a predetermined number of turns in the last named slots, the counter again breaks the circuit through the coil 230 to eflect the next step of advance of the contacts 22%` and 224. This positioning of the contacts 223` and 224 results in the elevation of the tail rod of the cylinder 224 to its uppermost position wherein the throw of the shuttle is again increased to effect the next series of windings in the adjacent pair of slots in the stator core. Upon the completion of the winding of a predetermined number of turns in the last named slots,

the counteragain operates to advance the

contacts

223, 224 and 241. It should be noted that the

contacts

223 and 224 serve no active function under the last indexing movement. However, the contact 241 establishes an electrical connection with the next of a series of contacts 243, in the first level of the Stepping relay 245 and the indexing movement of the Stepping relay 225 continues to operate until the

contacts

223 and 224 have been returned in a homing operation to the position shown in FIG. 18 wherein the machine has completed the winding of the poles on the stator core and is ready to receive another core to be wound in a similar manner.

Upon completion of 'the last series of Windings on a given core, the coil 259 of the cylinder to effect the advance of the core support 146 and its associated face plate 147 to permit the cutting of the wires and the removal of the wound stator core from the machine.

During the winding operation of one stator core, another stator core is prepared for application to the face plate of the machine by the application of suitable shoes and the mounting of the same in a stator holding fixture which serves to simultaneously position the shoes and retain the stator in proper position within the fixture. After removal of the previously wound stator core, the fixture holding the stator about to be wound is properly positioned on the stator support and face plate of the machine and releasably retained thereon through the action of a manually operated clamping mechanism. The free ends of the several wires which extend through the hollow Shuttle 68 are suitably anchored to the core support, in any approved manner, and the machine is ready to effect simultaneous winding of one or more pairs of poles on the stator.

A brief description of the operation of the machine Will serve to emphasize the simplicity of its sequence of operation for effecting the simultaneous winding of one or more pars of stator poles in the slots of a stator core. With the machine properly adjusted for the proper reciprocating and oscillating movements of the shuttle and with a core properly positioned on the core support 146, the start button is deprcssed to energize the operating coil on the relay 178. This closes switches 2% and 291 and opens switch 2112. The switch 2% is a holding switch to keep the machine in operation. The vholding circuit thus established may be broken by the microswitch 170 on the face of the machine, the stop button 181 and certain contacts of the stepping relay 225 upon completion of `the complete cycle of the winding operation. The microswitch 17% on the face of the machine is primarily intended as a safety device to insure the automatic stopping of the machine in the event that the position core is not properly clamped or in the event that it should loosen during the Winding operation and cause the face plate to move away from the proper position Wherein the normally open microswitch 171i is maintained in closed position. This safety feature insures against damage to the threading needle and shoes. v Switch 201 on the relay 178 closes the circuit that controls the operation of the clutch-brake unit 171. The closing of the circuit energizes the clutch to transmit power from the driving motor 34 to the remaining portion of the machine transmission. The opening of the circuit disengages the clutch and operates the brake to effect the instantaneous stopping of the machine. This circuit can also be closed by the operation of the jog switch 182 and the switch 2% of the relay 179. The switch 293 serves to carry the machine through the switching portion of the cam limit switch. Switch 252 is a safety switch to disconnect the emergency stop circuit, and also to prevent jogging operation through the switching portion of the cycle of the machine.

Relay 177 is actuated by the delay contact 267 and switch 2415 to close switches 1192 and 194 and open switch 193 of the relay 177. Switch 192 closes the low voltage current to the Stepping relay 225 and more particularly the second and third level which include the

moveable contacts

223 and 224 respectively. These two levels of the stepping relay 225 control and distribute the low voltage to the proper terminals on the several solenoid valves of the

air cylinders

124, 125 and 150 to direct their proper and timed sequential operation to insure the proper winding of the several stator poles on the core. The stepping switch 225 is of standard commercial form and effects the simultaneous advance of the

several contacts

223, 224 and 241 across a series of circumferentially spaced fixedly positioned contacts to control the timed sequential operation of the several solenoid valves operatively associated with their respective cylinders. As is common in this type of Stepping switch, the brushes or contacts execute one step of advance each time that the coil is energized and de-energized. It is understood that the actual step lhy step advance of the several contacts is effected upon 'the de-energization only of the Operating coil 230 of the switch 225.

The first level of contacts engaged by the moveable arm 241 are actuated by the interrupter switch 239 after the completion of the winding of the last series of turns on the stator core to return the Stepping relay 225 to its homing or starting position` During this operation, the Stepping switch operates to open the holding circuit of rclay 178 to shut off the machine at the completion of the winding operation. Switch 193 on the relay 177 serves to open the circuit to the clutch-brake 171 to stop the machine momentarily during the operation of the air cylinder 150. This is accomplished through the delay switch 207 of the time relay 179.

Switch 194 on the relay 177 energizes the coil 230 on the Stepping relay 225 to advance the contacts to their next successive position when the coil 230 is de-energized. All of these Operations are performed in the proper sequence under the control of the counter 152, which comprises a program monitor which is capable of being selectiveiy setup to insure the winding of the proper number of turns in each pair of core slots of the stator. At predetermined intervals, that is the completion of the proper number of turns in one pair of slots in the stator, the counter 152 closes the switch that operates the time relay 179.

The stop switch which is manually operable serves to disconnect the control circuit, at will, to effect the manual stopping of the machine at the will of the operator.

The jog switch 153 is connected directly in the control circuit of the clutch-brake 171 through switch 193 of the relay 177 so that the machine cannot be jogged during the operation of the Stepping relay 225. This arrangement insures against the malfunctioning of the machine which would result in damage to the needles and shoes which are respectively moving through or positioned in the stator core.

The emergency stop switch 182 is connected to the advance side of the cylinder 150 which effects the advance of the face plate 147 and core support 146 upon the completion of the winding operation. This circuit is completed through switch 202 of the relay 178 and the micro switch 167 mounted on the lever 164 to permit the operation of the solenoid valves Controlled by the

coils

259 and 260 on the cylinder 150 only when the arm 64 is in its fully retracted position which insures that the shuttle 68 has been withdrawn from the core of the stator. The positioning and operation of the micro switch 167 on the arm driving lever 64 controls the energization, at low voltage of the several coils operatively associated with the

respective cylinders

124, 125 and 150 so that none of these cylinders may be activated `to effect their movement at any time except When the shuttle 68 and its Operating lever 64 are in fully retracted position. This arrangement also provides a safety feature to insure against damage to any of the Operating parts of the machine and more particularly the needles which are mounted on the forward extremity of the shuttle 68 and 14.- which pass through the slots formed in the stator core during the cyclic operation of the machine.

A brief comment with regard to the cam 47 Will serve to emphasize both its simplicity and effectiveness in providing the simultaneous control for the reciprocating and oscillating movements of the shuttle 68. It should be noted that the cam is divided into four quadrants the opposite pairs of which are designed to effect the dwell of one pair of cam followers, while the other pair of cam followers disposed at a right angle to the first pair of cam followers are being moved. By reason of this arrangement, it is apparent that the forward and retracting strokes of the shuttle 68 must be completed before the oscillating movement of the shuttle is etfected. ln like manner, the oscillating movement of the shuttle 68 must be completed before its recprocating movement may be eifected. This feature of the machine is of material significance by reason of the fact that both the reciprocating and oscillating movements of the shuttle 68 are under the control of a single cam element 47.

A brief comment regarding the means for eifecting the step -by step increased oscillating movement of the shuttle 68 at predetermined intervals under the control of the programming monitor or counter 152 will serve to emphasize its etfectiveness in accomplishing the desired result. The oscillating movement of the shaft 93` under control of the cam 47 is constant at all times. The means for altering the distance of oscillating movement of the shuttle 68 in response to the dictates of the programming monitor or counter 152 comprises the slide block 115 which is successively elevated upon the completion of the winding of a predetermined number of turns in one lpair of slots in the core through the operaton of the

cylinders

124 and 125. The step by step elevation of the sliding block 115 effects the raising of the cross member 101 with respect to the crosshead block 98 carried by the oscillating shaft 93. The raising of the cross member 101 results in the elevation of the cross member 102 associated therewith through the bar to effect the raising of the roller 103 in the groove 104 of the lever 105 to thereby increase the throw of the lever 105 to thereby impart greater oscillating movement to the shuttle 68. The step by step elevation of the sliding block results in the step by step increase in the oscillating movement of the shuttle 68 to thereby deposit the turns of wire in successive pairs of slots in the stator which ;are disposed a greater circumferential distance apart than that of the slots in which the preceding winding were applied. The means for etfecting the step by step increase of oscillating movement to the shuttle 68 from the shaft 93 which has a fixed degree of oscillating movement also provides one of the important features of the present machine.

While the invention has been described in considerable detail in the foregoing specification, it is to be understood that various changes may be made in its embodiment without departing from or sacrificing any of the advantages hereinafter claimed.

We claim:

1. A stator wiuding machine comprising a holder on which a slotted stator core is removably positioned, a wire carrying shuttle axially movable through the positioned stator core, shuttle reciprocating means, shuttle oscillating means, a driving shaft for said shuttle repciprocating and oscillating means, a cam fixedly positioned on said driving shaft, said cam having active portions to synchronize cyclic reciprocating and oscillating movements of said shuttle, a cam follower operatively associated with said cam to effect movement of said shuttle reciprocating means, a cam follower operatively associated with said cam to effect movement of said shuttle oscillating means, an intermediate shaft in said shuttle oscillating means, the oscillating movement of said intermediate shaft being constant in amount, adjusting means in said shuttle reciprocating means to alter and control the extent of axial movement of said shuttle to compensate for various lengths of stator cores, counter means driven by said driving shaft to indicate the cycles of machine operation and the number of turns of Wire applied to a circumferentially Spaced pair of Wire receiving slots in Said core, and adjusting means in said Shuttle oscillating means under the automatic control of said counter means to successively increase the extent of oscillating movement of said Shuttle to transfer the Winding operation to adjacent more remote pairs of circumferentially spaced slots in the stator core upon the completion of the Winding of a predetermined number of turns in the next preceding pair of circumferentially Spaced Wire receiving slots in the stator core.

2. A stator Winding machine comprising a holder on which a slotted stator core is removably positioned, a Wire carrying Shuttle movable through the positioned stator core, Shuttle reciprocating means, Shuttle oscillating means, a driving shaft for driving said reciprocating and oscillating means, a cam fixedly positioned on said driving shaft, said cam having active portions to synchronize cyclic reciprocating and oscillating movements of the Shuttle, a cam follower operatively associated with said cam to effect movement of said Shuttle reciprocating means, a cam follower operatively associated With said cam to eifect movement of said Shuttle oscillating means, an intermediate shaft in said Shuttle oscillating means, Said shaft having a constant amount of oscillating movement, adjusting means in Said Shuttle reciprocating means to alter and control the extent of axial movement of Said Shuttle to compensate for various lengths of stator cores, counter means driven by said driving shaft to indicate the cycle of machine operation and the number of turns of Wire applied to a circumferentially Spaced pair of Wire receiving slots in the core, and adjusting means in said Shuttle oscillating means under the automatic control of said counter means and operatively associated With said intermediate shaft to successively increase the extent of oscillating movement of Said Shuttle upon completion of a bank of turns in one pair of stator core slots Whereby the next series of turns are applied to a second pair of core slots which include a greater circumferential spacing than the first pair of slots.

3. A stator winding machine comprising a holder on which a slotted stator core is removably positioned, a Wire carrying Shuttle movable through the positioned stator core, Shuttle reciprocating means, Shuttle oscillating means, a driving shaft for driving said Shuttle reciprocating and oscillating means, a cam fixedly positioned on Said driving shaft, said cam having active portions to synchronize cyclic reciprocating and oscillating movements of Said Shuttle, a cam follower operatively associated With Said cam to effect movement of Said Shuttle reciprocating means, a cam follower operatively associated With said cam to effect movement of said Shuttle oscillating means, an intermediate shaft in said Shuttle oscillating means disposed between said cam and said Shuttle, Said intermediate shaft having a constant amount of oscillating movement under the action of said cam, adjusting means in Said Shuttle reciprocating means to alter and control the extent of axial movement of said Shuttle to compensate for varying lengths of stator cores, counter means driven by said driving shaft to indicate the number of turns applied to a pair of stator core slots, adjusting means in said Shuttle oscillating means under automatic control of Said counter means and operatively associated With said intermediate shaft for altering the amount of oscillating movement of Said Shuttle in response to constant oscillating movement of Said intermediate shaft upon completion of a bank of turns in one pair of stator core Slots, and adjustably positioned means on Said counter to predetermine the number of turns applied to any particular pair of Slots in the core Whereby upon completion of the predetermined number of turns of Wire in one pair of core slots the next series of turns are applied to a Second pair of core Slots Which include a .greater circumferential spacing than the first pair of slots to thereby effect the continuous Winding of a pole on the stator core.

4. A stator Winding machine comprising a holder on Which a stator core is removably positioned, a Wire carrying Shuttle axially movable through the positioned stator core, Shuttle reciprocating means, Shuttle oscillating imeans, .a driving shaft for driving said Shuttle reciprocating and oscillating means, a cam fixedly positioned on Said driving shaft, a cam follower operatively associated With and driven by said cam to effect reciprocating movement of Said Shuttle, a cam follower operatively associated With and driven by said cam to effect the oscillating movement of Said Shuttle, Said cam means serving to synchronize the cyclic reciprocating and oscillating movements of Said Shuttle, an intermediate shaft in said Shuttle oscillating means interposed between said driven shaft and Said shut-tle, said intermediate shaft having a constant degree of oscillating movement, a counter driven by said driving shaft to indicate the number of cycles of Shuttle movement to thereby count the number of turns applied to a pair of circumferentially spaced parallel Wire receiving slots in Said stator core, adjustably positioned means on Said counter to predetermine the number of turns to be applied to any particular pair of Slots in Said core, adjusting means in Said Shuttle recprocating means to alter -and control the extent of axial movement of Said Shuttle to compensate for varying lengths of stator cores, and adjusting means in said Shuttle oscillating means to alter the amount of oscillating movement transmitted to said Shuttle from said intermediate shaft to successively increase the extent of oscillating movement of Said Shuttle to transfer the continued Winding operation to a Second pair of stator core Slots having a greater circumferential spacing than the previously mentioned pair of slots upon the completion of the Wind'ing of a predetermined number of turns in said first named Slots.

5. A stator Winding machine comprising a holder on which a slotted stator core is removably positioned, a Wire carrying Shuttle axially movable through the positioned stator core, Shuttle reciprocating means, Shuttle oscillating means, a driving shaft for driving Said Shuttle reciprocating and oscillating means, a cam fixedly positioned on said driving shaft to synchronize the cyclic reciprocating and oscillating movements of said Shuttle, a cam follower operatively associated With Said cam to effect the movement of Said Shuttle reciprocating means, a cam follower opera-tively iassooiated With Said cam to elfect the movement of said Shuttle oscillating means, Said Shuttle oscillating means including an intermediate shaft interposed between said driving shaft and said Shuttle, the oscillating movement of Said intermediate shaft being constant in amount, a counter means driven by Said driving shaft to indicate the number of cycles of Shuttle 'movement to thereby count the number of turns applied to a pair of circurnferentially spaced parallel Wire receiv- `ing lSlots in Said stator core, -adjustably positioned means on Said counter to predetermine the number of turns to be applied to any particular pair of slots in the core, and adjusting means in said Shuttle oscillating means under the control of said adjustably positioned means on said counter to alter the amount of oscillating movement transmitted to Said Shuttle from said intermediate shaft to successively increase the extent of oscillating movement of said Shuttle to transfer the continued Winding operation to a second pair of stator Slots having a greater circumferential Spacing than the Ipreviously mentioned pair of slots upon the completion of the Winding of the predetermined number of turns of Wire in the first named slots.

6. A stator Winding machine comprise a holder on Which a slotted stator core is removably positioned, a Wire carrying Shuttle movable through the positioned stator core, Shuttle reciprocating means, Shuttle oscillating means, a driving shaft for driving said Shuttle reciprocating and oscillating means, a cam fixedly positioned on said driving shaft to synchronize the cyclic reciprocating and oscillating movements of said Shuttle, a cam follower operatively associated With said cam to effect the movement of said Shuttle reciprocating means, a cam follower operatively associated With said cam to effect the movement 'of said Shuttle oscillating means in opposite directions at the respective ends of its reciprocating movement, said shuttle oscillating means including an |intermediate shaft interposed between said driving shaft and said shuttle, the degrees of oscillating |movement of Said intermediate shaft being constant, a counter driven by said driving shaft to indicate the number of cycles of shuttle movement to thereby count the number of turns applied to a pair of circumferentially spaced parallel Wire receiving slots in the stator core, adjustably positioned means applied to said counter to preselect the number of turns of Wire to be applied to a pair of circumferenti'ally spaced slots in the core, and adjusting means in said shuttle reciprocating means to alter and control the extent of aXial movement of said shuttle to compensate for varying lengths of stator cores, and adjusting means in said shuttle oscillating means under the control of said counter means to successively increase the oscillating movement transmitted to said shuttle from said intermediate shaft to successively increase the extent of oscillating movement of said shuttle to transfer the continued Winding operation to =a second pair of stator slots having greater circumferential spacing than first named pair of slots upon the completion of the Winding of the predetermined number of turns in the first named slots.

7. A stator Winding machine comprising a holder on which a stator core is removably positioned, a Wire carrying Shuttle movable through the positioned stator core, shuttle reciprocating means, shuttle oscillating means, a driving shaft for driving Said shuttle reciprocating and oscillating means, a cam fixedly positioned on said driving shaft to synchronize the cyclic reciprocating and oscillating movements of said shuttle, a cam follower operatively associated vWith Said cam to effect the movement of said shuttle reciprocating means, a cam follower, operatively associated with said cam to effect the movement of said shuttle oscillating means in opposite directions at the respective end of its reciprocating movement, said shuttle oscillating means including an intermediate shaft interposed between said driving shaft and said Shuttle, the degree of oscillating movement of said intermediate shaft being constant, a counter means driven by said driving shaft operative to indicate the number of turns of Wire applied to a pair of circumferentially spaced Wire receiving slots in the core, adjustably positioned means on said counter to preselect the number of turns to be applied to a particular pair of slots in the core, adjusting means in said shuttle reciprocating means to alter and control the eXtent of axial movement of said shuttle to compensate for varying lengths of stator cores, and adjusting means in said shuttle oscillating means operatively associated with said intermediate shaft and under control of said counter means to successively increase the oscillating movement of said shuttle to transfer the Winding operation of said shuttle to an adjacent more remote pair of slots in the stator core upon the completion of the Winding of a predetermined number of turns in the preceding pair of slots in the stator core.

8. A stator Wnding machine comprising a holder on which a stator core is removably positioned, a Wire carrying shuttle movable through the positioned stator core, shuttle reciprocating means, shuttle oscillating means, a driving shaft for driving said shuttle reciprocating and oscillating means, a cam element fixedly positioned on said driving shaft to synchronize the cyclic reciprocating and oscillating movements of said Shuttle, a cam follower operatively associated With said cam to effect the movement of said shuttle reciprocating means, a cam follower operatively associated With said cam to effect the movement of said shuttle oscillating means in opposite directions at the respective ends of its reciprocating movement, said shuttle oscillating means including an intermediate shaft interposed between said driving shaft `and said shuttle, said intermediate shaft having a Constant degree of oscillating movement, a counter means driven by said driving shaft and operative to indicate the number of turns of Wire applied to a circurnferentially' spaced pair of Wire receivng slots in the core, adjustably positioned means on said counter to preselect the number of turns of Wire applied to a particular pair of slots in the core, adjusting means in said Shuttle reciprocating means operative to alter and control the extent of axial movement of said shuttle to compensate for varying lengths of stator cores, and adjusting means in said shuttle oscillating means operatively associated With said intermediate shaft and under control of said counter means to automatically successively increase the extent of oscillating movement of said Shuttle to transfer the Winding operation of said shuttle to an adjacent more remote pair of 'circumferentially spaced slots in the stator core upon the completion of the Winding of a predetermined number of turns in the next preceding pair of circumferentially spaced Wire receiving slots in the stator core.

References Cited in the file of this patent UNITED STATES PAT ENTS 1,431,947 Gysel Oct. 17, 1922 2,640,652 Harvey Inne 2, 1953 2,847,l Lill et al. Aug. 12, 1958