Abstract: An elevator modification work apparatus for disposing a coupling shaft mounting aperture on an end surface of a motor shaft includes a positioning member on which a recess portion is disposed into which the motor shaft is fitted. Displacement of the positioning member relative to the motor shaft in a direction that is perpendicular to the axis of the motor shaft is restricted by fitting the end portion of the motor shaft into the recess portion. A motor shaft positioning aperture that passes through the positioning member in a direction that intersects a bottom surface of the recess portion is disposed on the recess portion. A position at which to dispose the coupling shaft mounting aperture on the end surface of the motor shaft is specified by a position of the motor shaft positioning aperture when the end portion of the motor shaft is fitted into the recess portion.

Abstract: An armature for an electric motor has a lamination stack on a shaft with a commutator mounted on one end of the shaft. Magnet wires wound in slots in the lamination stack, the commutator and armature shaft are at least partially encapsulated in thermoset. The commutator has a commutator ring divided into a plurality of segments with slots between the segments that are filled with a second plastic when the commutator is made by molding a core of the second plastic, such as phenolic, in the commutator ring before the commutator ring is mounted on the armature shaft. Prior to molding the thermoset, the commutator ring is sealed. The seal prevents the thermoset from flowing into the slots between the commutator ring segments or over the commutator ring.

Abstract: An stator manufacturing apparatus including: a stator core having radial slots formed at positions in a circumferential direction so as to open in an inner peripheral surface thereof; and a rectangular cross-section rectangular wire formed in a substantially cylindrical shape and forms a coil winding, and has linear portions that are respectively disposed in the radial slots and formed in parallel to the slots, continuous portions that alternately connect one end of the adjacent ones of the linear portions to each other and alternately connect the other end thereof to each other, and bent portions that are formed by bending one end side of the linear portions radially inward. The rectangular wire is disposed on the stator core in a distributed winding arrangement.

Abstract: A forming machine for forming a loop winding having a plurality of meandering parts and disposed in a stator of a motor which includes: a first die unit having a plurality of first dies spaced from each other at regular intervals in a circumferential direction; and a second die unit having a plurality of second dies which are spaced from each other at the same intervals as the regular intervals in a circumferential direction and which are each disposed between adjacent ones of the first dies, wherein each of the second dies has a winding holding part for holding a loop winding; and the first die unit and the second die unit are each provided with a winding diameter reducing means for reducing the loop winding in the radial direction thereof according to a displacement of the first die unit in the axial direction relative to the loop winding held by the winding holding parts.

Abstract: An assembly mechanism is provided to press an inner stator into a receiving space of an outer stator. The assembly mechanism includes a pressing unit and a first positioning plate. The pressing unit includes a supporting device to support the outer stator, and a pressing device movable relatively to the supporting device. The first positioning plate is attached to a top of the outer stator. The first positioning plate defines an opening forming a clearance fit with the inner stator. The opening receives the inner stator and guides the inner stator to move into the receiving space of the outer stator under a pressing action of the pressing device. An assembly method is also provided.

Abstract: A progressive die assembly and method for manufacturing lamina stacks from a strip of substantially planar material, in which at least some of the individual laminas are formed with portions which extend from, or are otherwise not within, the plane of the material strip. The die assembly includes die stations having punches for punching features substantially within the plane of the strip corresponding to individual laminas, such as lamina profiles and lamina interlock features. Additionally, the die assembly also includes at least one forming station which includes a selectively actuable forming tool which is configured to form a lamina portion in the strip which is disposed outwardly of the strip plane, such as by bending a portion of the strip.

Abstract: A method of making an armature includes placing a commutator and a lamination stack on an armature stack. Coil windings wound in slots in the lamination stack, the commutator and armature shaft are at least partially encapsulated in a first plastic. The commutator has a commutator ring divided into a plurality of segments with slots between the segments that are filled with a second plastic when the commutator is made by molding a core of the second plastic in the commutator ring before the commutator ring is mounted on the armature shaft. The mold used to mold the first plastic includes projections that extend between the tangs of the commutator and against notches at axial ends of the slots of the commutator. The notches filled with the second plastic and the projections of the mold prevent plastic flash from getting into the slots of the commutator ring.

Abstract: A method for manufacturing a stator of an electrical rotating machine that is configured to have a rotor mounted inside the stator. The stator has a laminated magnetic circuit having a stack of magnetic metal sheets disposed substantially parallel to a plane perpendicular to the axis of rotation of the rotor of the machine. The magnetic circuit has teeth that delimit longitudinally oriented slots. The method includes the step of installing electrically conductive wires in the slots and forming winding heads at the two axial ends of the magnetic circuit and installing this assembly on a vertical axis. The assembly is trapped between an outer sheath, forming part of the final motor, and a removable inner core substantially occupying a volume reserved for the rotor. The conductive wires in the slots are impregnated under vacuum with a slot-impregnating composition including a heat-setting resin and a filler, and the composition is polymerized.

Abstract: A method is provided for manufacturing a stator of an electrical rotating machine. The method includes: impregnating a first winding head with a first composition that includes a heat-setting resin and a filler of a first particle size; impregnating conductive wires in a slot region with a slot-impregnating composition that includes a heat-setting resin and another filler of a second particle size smaller than the first particle size of the filler of the first composition; and impregnating a second winding head with a composition that includes a heat-setting resin and a filler of a particle size larger than the second particle size.

Abstract: Disclosed herein is a jig for assembling a rotor. The jig includes an upper jig part, a lower jig part, a support plate, a guide jig part, and a spring. The upper jig part has a pressure protrusion for press-fitting a rotating shaft, and applies pressing force to the rotating shaft. The lower jig part supports a rotor casing in a direction which is opposite the acting direction of the pressing force. The support plate is mounted to the lower jig part, and supports the rotor casing in a direction which is opposite that of the force for press-fitting the rotating shaft. The guide jig part supports the rotor casing in a direction which is opposite that of reaction force generated in the rotor casing by the support plate. The spring elastically biases the guide jig part towards the rotor casing.

Abstract: A feed rate of a single-point cutting tool, which is an axial relative moving distance of the cutting tool along an outer peripheral surface of an unfinished commutator product per revolution of the unfinished commutator product, is reduced in an end part of a cutting region of the outer peripheral surface of the unfinished commutator product, which is adjacent to a commutator riser of each commutator segment provided in the outer peripheral surface of the unfinished commutator product.

Abstract: A device for manufacturing a motor is disclosed. The motors to be manufactured have a stator body including a stator of the motor, field cores that protrude from the inside surface of the stator body, pole pieces that extend from the field cores to cross with the field cores, coil receiving parts defined by a space facing the field cores, the pole pieces and the inside surface of the stator body, and coils retained in the coil receiving parts. The device has first jigs that extend in the longitudinal direction of the stator body and retain the pole pieces as well as a second jig that extends in the longitudinal direction of the stator body. The second jig has a pressing part corresponding to the arcuate shape of the pole pieces. The device further includes a pressing mechanism that presses the first jigs retaining the pole pieces away from the coil receiving parts, thereby bending the pole pieces away from the coil receiving parts.

Abstract: Magnet wires wound in slots in a lamination stack of a dynamoelectric machine are encapsulated, in whole or in part, with plastic. The plastic may be thermally conductive and have features molded therein that enhance heat transfer. The plastic may stiffen the armature and increase its critical speed. Characteristics of the plastic, its geometry and its distribution may be varied to adjust spinning inertia and resonant frequency of the armature. The magnet wires may be compressed into the slots, by application of iso-static pressure or by the pressure of the plastic being molded around them. Larger magnet wire can then be used which increases the power of the electric motor using the armature having the larger magnet wire. A two or three plate mold may be used to mold the plastic around the armature. Balancing features can be molded in place. The plastic can have a base polymer that is a blend of two or more polymers and various thermally conductive fillings.

Abstract: A method of manufacturing a winding of a rotary electric machine includes steps of pressing a portion of a conductor segment in a predetermined direction to reduce its dimension in the direction, inserting the conductor segment into a slot of a stator core, bending the conductor segments and joining ends of the conductor segments. In the pressing step, the conductor segment is pressed with a punch in a condition that it is held in a die that has curved inside corner portions to restrict deformation of corners of the pressed portion.

Abstract: An apparatus for gripping temporarily the wire in an armature winding machine. The machine is of the type comprising a gripper formed by an arm (11) having an end (13) connected to a support (14) and the other free end (12) for gripping the wire. The free end (12) moves between a first position where it is approached to a winding zone and a second position where it is withdrawn from the winding zone. The gripper (12) translates then parallel to itself and integrally to the support (14), in vertical direction. The translation is operated by rotation of a driven axis (17) according to a predetermined function movement/time, whereby at each angular position of the axis a position of the gripper (12) univocally corresponds intermediate between the first and second position.

Abstract: A commutator tool head for engaging a commutator having a bore and having tangs surrounding the bore. The tool head includes a substantially circular array of circumferentially-spaced-apart and commutator-tang-bending pins. The pins are disposed substantially parallel to the longitudinal axis of the array. The pins are longitudinally positionable to enter the spaces between the tangs to bend circumferentially unequally-spaced-apart ones of the tangs to achieve substantially equal circumferential spacing between the tangs.

Abstract: Method for producing parcels consisting of sheet metal pieces, wherein the sheet metal pieces are arranged next to each other and assembled with each other into a parcel. Basically, bent sheet metal piece segments of a circumferential length that corresponds to an angle &agr;=360°/n are created through a stamping process, with n corresponding to a positive integer and being larger or equal to two, with n of these sheet metal piece segments being arranged in one plane to a sheet metal piece. The sheet metal pieces that have been arranged next to each other are connected with at least one fastener and/or welded together.

Abstract: Arrangement for the insertion of coils in a stator including a moving wire-insertion spider, a plurality of parallel wire-guide blades arranged along the contour of the moving spider, a stack-guide member provided with a plurality of recesses accommodating respective blades which are provided with a groove on their outer surface. The recesses are provided with a rib protruding towards the interior of the respective recess and extending parallel to the longitudinal direction thereof, and are adapted to engage respective grooves when the stack-guide member is inserted within the wire-guide blades. The grooves maybe arranged in pairs on a respective blade and are symmetrical with respect to a vertical plane passing through the axis of the moving spider.

Abstract: A commutator tool head for engaging a commutator having a bore and having tangs surrounding the bore. The tool head includes a substantially circular array of circumferentially-spaced-apart and commutator-tang-straightening pins. The pins are disposed substantially parallel to the longitudinal axis of the array. The pins are longitudinally positionable to enter the spaces between the tangs to engage and straighten the tangs. A method for processing a commutator includes positioning the commutator with its bore in a substantially vertical orientation and includes longitudinally aligning the commutator tool head and the commutator. By relatively longitudinally moving together the commutator and the tool head, the pins longitudinally enter the spaces between the tangs and engage and straighten the tangs.

Abstract: Through-holes 14 are formed in an armature core 11, and engaging portions 21 are formed in an commutator unit 15 at positions corresponding to the through-holes 14. Positioning pins 23 are inserted into the through-holes 14 and the engaging portion 21 to exactly position the armature core 11 to the commutator unit 15. The coil terminals are soldered to risers 18 in a state that the under side of the risers 18 are supported by the tips 35 of legs 36 standing erect on a support tool 34, inserted through the open slots 33.

Abstract: A winding apparatus comprises a core jig having a circular outer circumference, plate-shaped stator core jigs designed to have a shape corresponding to stator cores, and holding jigs to be detachably installed to the outer circumference of the core jig for holding the stator core jigs. Accordingly, the plurality of divided stator cores can be subjected to winding quickly and easily. It is possible to perform an efficient winding operation.

Abstract: A pallet and system for transporting armatures along an armature manufacturing line, where the armatures may change in configuration at different stations of the manufacturing line, accommodates the various configurations without requiring a change of pallets at a station at which a configuration change occurs. The pallet has multiple sets of seats, each set corresponding to one of the configurations that the armature may assume during processing. Whenever the configuration of the armature changes from a first configuration to a second configuration, the armature, having been removed from a set of seats that accommodates the first configuration, is replaced in a set of seats accommodating the second configuration. One way of accomplishing the transfer is, after lifting the armature from the first set of seats, allowing the pallet to advance by the distance separating the first and second sets of seats.

Abstract: An armature shaft having an eccentric cam body extending from one end thereof is gripped by an adjustable collet mechanism and rotated by a drive motor, preferably a stepping motor, having an output shaft movable in discrete increments. This rotation continues until an imaginary reference point on the periphery of the cam body reaches first and second angular positions. The preferred reference point is the point on the periphery of the end face of the cam body that is farthest from the axis of rotation of the armature shaft. The number of steps necessary to rotate the armature shaft so that the reference point is moved from the first angular position to the second angular position is determined as the armature shaft is rotated and used to determine the position of the reference point relative to a centerline between the first and second angular positions.

Abstract: A plurality of insulator-coated coils wound in slots of a magnetic core in multiple layers have end portions including at least contact portions without insulator coatings and connected to risers of a commutator, and adjacent portions next to the contact portions but out of the risers. A stepped portion is formed in at least one of the adjacent portion of an upper coil and the adjacent portion of a lower coil of the insulator-coated coils wound in multiple layers at a location where the upper coil and the lower coil face each other in crossing relation. A sufficient gap distance between the upper and lower coils is ensured at the location where the coils cross each other, and the productivity of revolving armatures is improved.

Abstract: An armature shaft having a cam body extending from one end thereof is inserted into a shaft-receiving transfer block of an armature lamination and shaft assembly machine so that the cam body has a desired angular orientation relative to the axis of rotation of the armature shaft. A stack of laminations with which the shaft is assembled is rotationally oriented using a rotatable support for the lamination stack and a pair of proximity detectors which sense the position of missing portions of one or more of the laminations.

Abstract: A connector is equipped with a front member in which a plurality of terminal containers for accommodating female terminal metal fittings are arranged in parallel in a transverse direction and resilient locking pieces of the terminal containers exposed forward are arranged in parallel in the transverse direction. The front member is composed of two through-hole portions. Each through-hole portion has jig insertion recesses continuously formed, wherein in the recess of jig insertion, respective substantial halves of two adjacent terminal containers appear, and the tapered guide surface formed on both edges of the recess of jig insertion partially overlap the periphery of the opening portion of each of the two terminal containers on the side of the resilient locking piece. Thus, a partner male terminal metal fittings can be smoothly guided into each terminal container through the front member provided at the connector housing.

Abstract: An armature shaft having a cam body extending from one end thereof is inserted into a shaft-receiving transfer block of an armature lamination and shaft assembly machine so that the cam body has a desired angular orientation relative to the axis of rotation of the armature shaft. A stack of laminations with which the shaft is assembled is also angularly oriented.

Abstract: In the case of assembly after the insertion of the rotor (4-7) with the commutator (4) into the motor housing (8), in order to be able to install the brush holder (1), with its brushes (1.1; 1.2) which are subject to radial spring pressure, simply and in a manner which can be carried out by an automated machine it is proposed that: the brush holder (1) is pushed onto one end part (2.1) of an installation mandrel (2) which is in the form of a sleeve and whose other end (2.3) is placed on the commutator (4), together with an integrated restraining part (3) which holds the brushes (1.1; 1.2) in a raised installation position; and that the restraining part (3) is fixed outside the motor housing (8) by means of a conical expansion of one end part (2.1). The brush holder (1) is then moved into its final position with the brushes (1.1; 1.2) which now slide on the installation mandrel (2 ). The brushes (1.1; 1.2) are pressed radially onto the commutator (4) during the withdrawal of the installation mandrel (2).

Abstract: Dynamo-electric machine armatures which have commutators and cores that are axially close to one another are wound with the aid of wire guiding hooking plates that are inclined to reach into the portion of the commutator that is axially adjacent to the core where the coil leads must be attached to the commutator. The hooking plate may also perform an additional extension motion in order to press the coil leads out of the way of a subsequent fusing operation. This function may alternatively be performed by a separate pusher member which is either associated with the hooking plate or independent of the hooking plate. The fusing electrode may be specially shaped to facilitate performing fusing operations axially close to the armature core.

Abstract: Pivotally mounted wire trimming blades having sharp, wire trimming, edges are positioned so that they extend through notches in the inner commutator shield of a double flier armature winder and lie against commutator start tangs and extend closely adjacent the outer periphery of the inner shield. The start or finish wires, as the case may be, are severed by being pulled against the wire trimming edges. The wire trimming edges have offset portions, or else the trimming blades are movable to offset locations, so that the trimming of the start wires are at locations which are radially and longitudinally offset from the locations at which the finish wires are trimmed.

Abstract: A plurality of commutators are inserted into a commutator supply tube in end-to-end, tang-oriented relationship to form a row of commutators mutually aligned along a common axis. The ends of the supply tube may be at least partly covered during transport and handling. The commutator-filled tube is oriented on a horizontal axis in axial alignment with a commutator-receiving nest. A first commutator in the tube is inserted into the nest by pushing on the opposite end of the row. The nest is moved into alignment with a placing ram and the commutator pushed into the ram nosepiece after which the ram is operated to press the commutator onto an armature shaft. The process is repeatedly carried out until all of the commutators are removed from the tube. The process may also include a commutator tang forming step and a tang ejection capability. An empty tube is replaced successively by other tubes filled with commutators so that the process can be repeatedly carried out over an indefinite period of time.

Abstract: Pivotally mounted wire trimming blades having sharp, wire trimming, edges are positioned so that they extend through notches in the inner commutator shield of a double flier armature winder and lie against commutator start tangs and extend closely adjacent the outer periphery of the inner shield. The start or finish wires, as the case may be, are severed by being pulled against the wire trimming edges. The wire trimming edges have offset portions, or else the trimming blades are movable to offset locations, so that the trimming of the start wires are at locations which are radially and longitudinally offset from the locations at which the finish wires are trimmed.

Abstract: A plurality of commutators are inserted into a commutator supply tube in end-to-end, tang-oriented relationship to form a row of commutators mutually aligned along a common axis. The commutator-filled tube is oriented on a horizontal axis in axial alignment with a commutator-receiving nest. A first commutator in the tube is inserted into the nest by pushing on the opposite end of the row. The nest is moved into alignment with a placing ram and the commutator pushed into the ram nosepiece after which the ram is operated to press the commutator onto an armature shaft. The process is repeatedly carried out until all of the commutators are removed from the tube. The process may also include a commutator tang forming step and a tang ejection capability. An empty tube is replaced successively by other tubes filled with commutators so that the process can be repeatedly carried out over an indefinite period of time.

Abstract: A method of manufacturing an annular base portion of an electrical slip ring assembly having a plurality of conductive rings formed in the outer circumferential surface thereof is described. The slip ring base is molded, and grooves are machined into the outer circumferential surface thereof. Conductive strips are cut into a series of lengths forming conductive rings to be placed about the outer circumference of the annular base member. The individual lengths of conductive material are anchored to the outer circumferential surface of the slip ring base and a rolling pressure is exerted on them about the circumference of the base to cause the rings to be press fit into the grooves previously formed on the base. When the complete circumference of the ring has been press fit into its respective groove, the other end of the conductive ring is then secured to the base.

Abstract: An armature core subassembly and a commutator to be assembled thereon are each centered on a common axis and rotated relative to one another until a desired angular alignment is obtained between a side edge of a commutator bar and the armature core slots. This orientation is maintained while the commutator is advanced to and pressed onto the armature shaft. A commutator placing machine is described in which a tang-oriented commutator is loaded into the nosepiece of a ram assembly and the ram assembly is rotated by a stepper motor until an edge of a commutator bar is detected at a predetermined location by an optical edge detector. Prior machines for tang-orientation and orientation by insulating gaps between commutator bars are also described.

Abstract: A commutator alignment fixture includes a cylindrical bore having a plurality of axial circumferentially spaced blades extending inward from a side wall thereof. The circumferential spacing of the blades is determined according to the circumferential spacing of longitudinally extending, circumferentially spaced slots in a commutator wherein the alignment fixture blades coact with the commutator slot to axially slidably support the commutator in known circumferential orientation to the armature winding and core location when the commutator assembly is press-fit onto an armature shaft so that the commutator slots are in circumferential orientation with respect to the slots on the armature.

Abstract: A discoidal, flat coil armature for a flat disc motor is formed by winding coils of wire on mutually spaced inner and outer ring structures. The inner ring structure surrounds a commutator body having segments with tangs. Automatic apparatus, including a rotating flier, a preform clamp and rotator, and a wire guide assembly, winds the coils and makes coil terminal connections to the commutator tangs before, during, and after the winding of the coils. The coils are tightly wound on the ring structures so that they form, along with the ring structures and the commutator body, an armature preform having a self-supporting shape. The parts of the finished preform are bonded together and to an armature shaft by a matrix of resinous material.

Abstract: A double flier armature winding machine is provided with two wire trimming assemblies, one for each flier, each having a trimming head with a sharp edge against which a lead wire is severed by abruptly moving a wire clamp gripped to the lead wire in a direction to cause the wire to be stretched over the sharp edge.

Abstract: A commutator placing machine includes means for feeding armatures to a loading position where they are indexed to a preset angular position, means for feeding commutators to a loading position, and means for orienting the commutators prior to installation onto the armature shaft. An index slide or shuttle is provided to impart a rotational component of force to ensure that the commutator is properly positioned with respect to a locator tab. A proximity sensor indicates when the commutator is in its proper position, and if the commutator is not properly positioned, then the index slide is first retracted and then again extended in an attempt to seat the commutator properly. Guide rails are provided to ensure that the commutator maintains its orientation from its loading position to its final position on the armature shaft.

Abstract: A method and apparatus for the production of armatures for small electric motors is provided wherein the armatures are clamped in specially designed workpiece holders and continuously processed in successive work stations. The stations may include an armature loading station, a collector pressure-fitting station, a winding station, a welding station, an electrical testing station and an armature discharge station. The transportation of the workpiece holders through the apparatus is effected by a revolving conveyor belt which moves the workpiece holders individually or in groups to the successive work stations. At each work station, the workpiece holder is raised from the conveyor belt, secured in the work station, and connected by clutch devices to corresponding actuating devices within the work station.

Abstract: A dynamoelectric machine commutator structure having a plurality of conductive commutator segments secured in operating position by a commutator banding is characterized by including a flexible, thermally stable dielectric coating material between the outer edges of the commutator banding and the conductor segments in order to effectively seal the junction between those members, thereby preventing the deposit or buildup of electrically conductive contaminants at that junction so that the likelihood of electrically short circuiting the conductive segments of the commutator is effectively eliminated. According to the preferred method of the invention, a banded commutator is formed by applying such a coating to predetermined portions of the banding grooves so that the coating effectively seals the junctions between the banding and the conductive segments of the commutator, thereby preventing the accumulation of conductive contaminants at those junctions.

Abstract: Method apparatus for manufacturing commutators, especially for small electric motors. Commutator segments are separately inserted into a mold intermediary plate. The segments are inelastically deformed by a coaxially inserted tool before the molding process. The formation of webs of the injected plastic body material between commutator segments is avoided.

Abstract: A commutator puller for electric motors, alternators, generators and the like has teeth means which hold the commutator while a plunger separates the armature from the commutator. Wire windings soldered to contacts on the commutator may be simultaneously loosened by dipping the commutator, including the winding connections, in a solder bath. While the solder is still molten, the armature is placed in the commutator puller. Power means push the plunger toward the armature. As the plunger moves, a spring associated with the plunger pushes an actuator into a plurality of teeth, forcing the teeth against the commutator to hold it firmly in place. As the plunger continues to move, it pushes the armature away from the commutator. Thus, the commutator contacts are disconnected from the armature windings before the solder hardens. When the power means are disabled, the plunger returns to its original position, relaxing the spring.

Abstract: An armature of double insulation construction for commutator motors of the wound-rotor type and a method of making the armature. An insulator insulating an iron core from a shaft and windings from the iron core also insulates a commutator from the shaft and unites the shaft, iron core and commutator into an integral rigid body. The armature can be fabricated with high precision by a simplified method.

Abstract: Apparatus for manufacturing commutators, especially for small electric motors. Commutator segments are separately inserted into a mold intermediary plate. The segments are inelastically deformed by a coaxially inserted tool before the molding process. The formation of webs of the injected plastic body material between commutator segments is avoided.

Abstract: A method and apparatus are provided for replacing a commutator on a starter armature in which radially extending, circumferentially spaced commutator contact wires are interspaced between and soldered to mating contact wires on the armature. A heated platen includes at least one receiving hole through which the commutator is placed so that the soldered connection between the commutator and armature contact wires rests against the platen to thereby melt and remove the solder. The commutator is secured in a chuck while the armature is driven away from the stationary commutator. Thereafter, a novel tool spreads the rotor contact wires radially outwardly which permits a subsequent and new commutator to be positioned over the armature shaft so that the new commutator contact wires are interspaced between the armature contact wires. The contact wires between the new commutator and the armature are then soldered together by dipping the assembly into a solder pot heated by the platen.

Abstract: Armature windings for commutator type dynamo-electric machines. The specification discloses a method, device and machine for enabling inter-coil lead wires to be reliably placed in and retained temporarily in a connection slot at the connection end of the relevant commutator bar by carrying a lead wire from one armature coil through that slot and along the commutator surface, looping the wire around the shaft at the end of the commutator, carrying the wire back along the commutator surface and through the slot, and leading it to the next armature core slot ready for the winding of the next coil.

Abstract: The connecting wires between armatures wound by an automatic armature winding machine are clamped closely adjacent the commutator tangs with the finish wires hooked to the tangs of the wound armatures and the start wires looped about selected tangs of the armatures about to be wound. The clamped wire portions are severed at the end of the winding of a wound armature and then after the looping of the start wires about the tangs of the armature to be wound. The wire wasted is limited to the short, clamped wire portions. Also disclosed are two embodiments of double flier armature winding machines for winding armatures in accordance with the invention.

Abstract: An automatic armature production line comprising an assembling machine by which the component parts of an armature core assembly are assembled, a bank of armature winding machines by which the armatures are wound, a welding machine by which the wire leads connecting successively wound coils are physically and electrically connected to the terminals of the commutator, a testing station at which the completed armatures are tested for electrical continuity, and a transfer system by which the armature core assemblies and then the wound armatures are quickly moved from one work station to another, the transfer system comprising a plurality of identical cylindrical carriers that have axial cavities into which the armature core assemblies and the wound armatures are inserted and which roll along downwardly inclined tracks that lead from station to station, and which carriers have a flat surface spaced from their axes of rotation to coact with flat surfaced guides at the different work stations to hold the carriers i