US2535438A

US2535438A - Armature winder

Info

Publication number: US2535438A
Application number: US789825A
Authority: US
Inventors: Loran D Mccollom
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-12-05
Filing date: 1947-12-05
Publication date: 1950-12-26
Anticipated expiration: 1967-12-26

Description

Dec. 26, 1950 L. D. MOCOLLQM 2,535,438

ARMATURE WINDER Filed Dec. 5, 1947 2 Sheets-Sheet 2 WWW A 1/0 way:

Patented Dec. 26, 1950 UNITED STATES PATENT OFFICE 3 Claims.

This invention relates to a tool or implement especially adapted for use for either manually winding or holding electric motor armatures and which materially reduces the amount of time and manual labor as well as the eye strain ordinarily required in the winding of small armatures.

More particularly, it is an object of the invention to provide a tool or implement of extremely simple construction capable of being readily engaged with circumferentially spaced slots of an armature and by means of which the armature may be readily revolved.

. Still another object of the invention is to pro vide an armature winder having resiliently disposed jaws for engagement with spaced slots of the armature core and having means for preventing disengagement of the jaws from the core slots while the armature is being revolved by the tool or implement.

Various other objects and advantages of the invention will here nafter become more fully apparent from the following description of the drawings, illustrating a preferred embodiment thereof, and wherein:

Figure 1 is a side elevational view of the winding tool or implement shown in an applied position;

Figure 2 is a top plan view thereof;

Figure 3 is an enlarged longitudinal sectional view taken substantially along a plane as indicated by the line 3-3 of Figure 2;

Figure 4 is a transverse sectional view taken substantially along a plane as indicated by the line 4-4 of Figure 3;

Figure 5 is a cross sectional view taken substantially along a plane as indicated by the line 55 of Figure l, and

Figure 6 is a fragmentary longitudinal sectional view taken substantially along a plane as indicated by the line 6-6 of Figure 4 and showing one of the jaws of the tool or implement in an applied position.

Referring more specifically to the drawings, for the purpose of illustrating a preferred application and use of the winding implement or tool, desig nated generally I, an armature core is illustrated in Figure 1 and fragmentarily in Figure 6, designated generally 8, and is provided with the usual straight slots 9 certain of which are shown in Figure 1 provided with lining strips l0, certain of which are shown containing the windings II which extend through the slots 9 thereof.

The winding tool or implement 1 comprises an elongated strip of relatively resilient metal, designated generally I2, and which includes an arcuate outwardly bowed intermediate portion I3 having corresponding inturned ends [4 forming jaws and which are disposed at acute angles to the portion I3 and in inwardly converging rela-. tionship relatively to one another. As best seen in Figure 3, the inner, free ends of the jaws H are turned inwardly or upwardly to form the lips l5 which are adapted to engage in selective slots 9, inwardly of the restricted outer portion thereof, as clearly illustrated in Figures 1 and 6.

An elongated leaf type spring I6 is secured by a rivet or suitable fastening l'l, intermediate of its ends to the outer side of the intermediate portion I3 and intermediate of the ends thereof, so that portions of the spring [6 on either side of the rivet ll will be bowed outwardly relatively to the intermediate portion [3 and with the terminals thereof bearing against said intermediate portion l3, adjacent its ends, for urging the jaws l4 inwardly of one another.

An elongated strip of metal [8 includes an intermediate portion which is disposed in the inner side of the arcuate strip portion l3 and which may be secured thereto by the rivet I1. The

-' portion I8 is rovided at its ends with obliquely arcuate portion 13 and the jaws l4 and which terminate in obliquely projecting legs 20 which are disposed on the inner sides of the jaws l4 and which extend toward the free ends thereof in diverging relationship thereto. The terminals of the legs 20 are turned inwardly and back on themselves to form feet 2! which are adapted to bear against portions of the periphery of the armature 3 when the lips [5 are in engagement with selective slots 9 thereof, as illustrated in Figures 1 and 6. The strip i8 is preferably secured at the junctures of its

portions

19 and 20 by soldering or welding, as seen at 22, to the inner sides of the jaws I 4. As best illustrated in Figure 4, the side edges of the jaws M are folded inwardly upon themselves, as seen at 23, from adjacent the ends of the arcuate intermediate portion l3 to points adjacent the lips l5 and said folded side edges converge toward the free ends of the jaws I 4. The side edges of the arcuate intermediate portion l3 are recessed intermediate of their ends, as seen at 24 in Figure 2, to form a handle or grip portion by means of which the tool or implement 1 can be manually engaged, when in its applied position of Figure 1, for turning the armature 8 or to hold armature 8 while wire is laid in by a rotary motion of the arm.

When the implement l is applied as illustrated in Figure 1, the resiliency of the intermediate 3 portion 13 or said portion l3 plus the spring IE will tend to cause the ends of the portion l3 to spring inwardly for urging the jaws l4 inwardly and toward one another to retain the lips I5 thereof in engaged position in the selective slots 9 and within the Winding strips In thereof, one end of each of which extends upwardly on the inner side of each jaw. The foot members 2|, as previously stated, will be disposed against portions of the periphery of the armature 8 when the lips l5 are in engagement with the slots 9 to prevent said lips l5 from springing out of the slots when a torsional force is exerted on the tool or implement 1 for revolving the armature 8. It will thus be readily apparent that by manually engaging the recessed portions 24 the implement 1 can be revolved for rotating the armature 8 therewith for effecting the winding thereof. By manually grasping the jaws l4 and spreading them relatively to one another, said jaws can be readily disengaged from or engaged with selective slots 9.

Obviously, if strip 12 is sufficiently resilient the auxiliary spring it may be dispensed with and the intermediate arcuate portion of the strip l8 and the oblique portions l9 thereof could likewise be omitted if desired, without affecting the functioning of the tool or implement 1.

Various modifications and changes, in addition to those previously mentioned, are likewise contemplated and may obviously be resorted to, without departing from the spirit or scope of the invention as hereinafter defined by the appended claims.

I claim as my invention:

1. In a tool or implement for winding armatures, an elongated strip of resilient material having an arcuate. outwardly bowed intermediate portion and inturned substantially straight ends forming jaws disposed in inwardly converging relationship, said jaws being resiliently supported relatvely to one another by said resilient intermediate portion and the inner terminals thereof being adapted to extend into and engage selective slots of an armature for attaching the tool or implement thereto so that the armature can be revolved and wound by torsional force exerted on the tool or implement, and leg members disposed on the inner sides of the jaws in outwardly diverging relationship relatively thereto and having foot portions at their free ends adapted to engage portions of the periphery of the armature when the jaws are disposed for engagement with the selective slots thereof, said leg members extending longitudinally of the jaws and the foot portions thereof being spaced a greater distance apart than the jaw terminals.

2. In a tool or implement for winding armatures. an elongated strip of resilient material hav- 4 ing an arcuate, outwardly bowed intermediate portion and inturned substantially straight ends forming jaws disposed in inwardly converging relationship, said jaws being resiliently supported relatively to one another by said resilient intermediate portion and the inner terminals thereof being adapted to extend into and engage selective slots of an armature for attaching the tool or implement thereto so that the armature can be revolved and wound by torsional force exerted on the tool or implement, said jaws having inwardly turned free ends forming lips adapted to engage in said selective slots for detachably retaining the jaws in engagement with the armature, and leg members disposed on the inner sides of the jaws in outwardly diverging relationship relatively thereto and having foot portions at their free ends adapted to engage portions of the periphery of the armature when the jaws are disposed for engagement with the selective slots thereof, said leg members extending longitudinally of the jaws and the foot portions thereof being spaced a greater distance apart than the jaw terminals.

3. In a tool or implement for winding armatures. an elongated strip f resilient material having an arcuate, outwardly bowed intermediate portion and inturned substantially straight ends forming jaws disposed in inwardly converging relationship, said jaws being resiliently supported relatively to one another b said resilient intermediate portion and the inner terminals thereof being adapted to extend into and engage selective slots of an armature for attaching the tool or implement thereto so that the armature can be revolved and wound by torsional force exerted on the tool or implement, and a leaf spring secured intermediate of its ends to the outer side of said arcuate intermediate portion and intermediate of the ends thereof, said leaf spring having terminals bearing against the outer side of Said arouate intermediate portion and adjacent its ends for urging the ends of the arcuate intermediate portion inwardly of one another.

LORAN D. McCOLLOM.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Num er Name Date 1,371,647 Sandell Mar. 15, 1921 2,394,529 Arpurth Feb. 12, 1946 FOREIGN PATENTS Number Country Date 223,270 Germany June 18, 1910