US1378923A - Support for brush-holders - Google Patents

Description

W. I. WARDER, JR.

SUPPORT FOR BRUSH HOLDERS.

1,378, gli

W. L WARDER', JR.. 4SUPPORT. FOR BRUSH HOLDERS. APPLICATION FILED 1AN.17,`1918.

Patented May 24,1921.

5 SHEKEI S- SHEET 2,

W. l. WARDER, In.

SUPPORT FoR BRUSH HOLDERS.

APPLICATION FILED JAN. 17, 1918. ,A l

Patented May 24,1921.

5 SHEElS-SHEET 3.

HHH

W. J. WARDER,JR.

SUPPORT FOR BRUSH HOLDERS. APPLICATION F1150 JAN. u, 1918,

W. J. WARDER, Jn. SUPPORT FOR BRUSH HOLDERS.

APPLICATION FILED 1AN.|7, 1918.

1,378,928. Patented May 24,1921.

5 SHEElS--SHEET 5.

WALTER J. WARDER, JR., 0F CHICAGO, ILLINOIS.

SUPPORT FOR BRUSH-HOLDERS.

Application filed January 17, 1918.

To @ZZ whom it may concern.'

Be itknown that I, I'VALTER J. l/VARDER, Jr., a citizen of the United States of America, and a resident of Chicago, county of Cook, and State ot' Illinois, have invented certain new and useful Improvements in Supports for Brush-Holders, of which the following is a speciication.

This invention relates to brush holder supporting means for commutating dynamoelectric machines, and to means for carrying the current from the brush holder studs to the main terminals of the machine, and more particularlyv to devices of this kind adapted for use on heavy current generators, such as used in electrolytic processes and includingplating dynamos and the like.

The main objects of this invention are to provide an improved and simplied form and arrangement of the brush supporting means and connections therefor; to simplify the current carrying connections between the brushes and the main terminals of the machine; and in large measure to substitute rigid plate and har constructions in place of flexible cables; to provide such connections in a form adapted to furnish a short current path of low resistance; to provide improved means for rigidly supporting the brush holder arms or studs in such manner as to avoid unsteadiness or vibration, espe- Y cially when the studs are' long and heavy, as required in plating dynamos; to provide a common insulated direct support of conducting material Jfor all the brushes and studs of like potential, positive and negative respectively, whereby simplicity and stability may be effected and a single pair of large capacity terminals may be made to suffice; and to provide for'equalizing the stud currents by commoning the free or projecting ends of the positive and negative brush supporting studs respectively.

An illustrative embodiment of this ini ention is shown in the accompanying drawings, in which:

Figure 1 is a conventional diagram of the armziiture and `field members developed in a plane, and also shows the circuit as a whole and the connections therefor also developed in a plane, the armature being double wound and having two commutatore.

Fig. 2 is an elevation of the outward side of the adjustable clamping ring, on the reverse side of which the brush yoke-rings may be bolted.

Specification of Letters Patent.

Patented May 24, 1,921.

Serial No. 212,221.

Fig. 3 is a section on the line 3-3 of F ig. 2.

ig. 4 is an elevation of the inward side of the outer yoke-ring (as viewed from the right of Fig. 5). I

4ig. 5 is a section on the line 5-5 of Fiom 4. v

Fig. 6 is an 'elevation oithe inward side of the inner yoke-ring (as viewed from the right of Fig. 7).-

F F ig. 7 is a section on the line 7-7 of 1g. G. f

Fig. 8 is an elevation of the inner side of the bearing-bracket and the pedestal of which itis a part (as viewed from the right of Fig. 9). Fig. 9 shows the bearing-bracket and pedestal as viewed from the left of Fig. 8, with a fragment of the clamp'yoke ring in place. F'ig. 10 is a plan of the bearingbracket and pedestal.

Fig. 11 is a side elevation of the brushholder mounting assembly, with the upper left part in section, and only one of the brush studs being shown, same being on the near side, and only one brush holder and brush being in place.

Fig. 12 is a section on the line 12-12 of Fig. 11, with a brush holder in place.

Fig. 13 is an enlarged sectional detail on the line 13-13 of Fig. 15.

. Fig. 14 is an enlarged section on the line Fig. 15 is an elevation of the inner side of the brush stud yoke assembly.

Fig. 16 is a section on the line 16-16 of Fig. 15.

Fig. 17 is similar to Fig. 15 except that a dilferent form of embodiment is shown.

Fig. 18 is a section on the line 18-18 of Fig. 17.

Fig. 19 is a third form of embodiment.

Fig. 20 is a section on the line 20-2O of Fig. 19.

Fig. 21 is a front'elevation of one of the main terminals with a cable lug bolted in place.

Fig. 22 shows a pair of equalizer rings of modified form.

Fig. 28 is a perspective view of' the base of a brush stud.

In the construction shown in Figs. 11 and 14 of the drawings, the brush supporting means 1 for each' end of the double woundV armature is formed in a manner somewhat duction motor. Said means 1 comprises a yoke ring 2 of compound character, a current equalizing member 3 also of compound character formed and adapted to serve as a stiener, and an even numbered series of studs et connecting said yoke ring and equalizing member and supporting the latter. Saidring2is rigidly supported on the iframe 5 of the machine, as will be more fully eX- plained,`by means 0i: the journal housing pedestal 6 having brackets or arms 7 and a detachable clamping ring ably on said arms and 'fastened to said ring 2.

rllie said yokering 2 comprises a pair of mutually insulated annular conductors 2 and 2, arranged preferably side by side and fastened together rigidly, as by means of screws or bolts 9, tting in duly registered apertures 2a and 2", disposed about the outer and inner edges oi rings 2 and 2 respectively. Said bolts 9 may to advantage also be long enough to extend through corresponding apertures 8 in the clamping ring 8,\vherebythethree rings 2, 2 and 8 may all be assembled and handled as a unit, though electrically separated by insulation 10. The bolts 9 are provided with insulating bushings 9. Means are provided fortaking the load current of the generator directly from said rings 2 and 2 as hereinafter expla-ined.

The said yoke ring conductors 2 and 2 are formed and arranged so that the brush studs 4,Which are preferably all alike and interchangeable, may be mounted in due cylindrical alinement thereon in alternate' succession. For this purpose the inner conductor 2 is provided With a series of equally spaced apertures 11 corresponding with the number of pairs of poles 12 and with their relative angular position about the axis, and the outer conductor 2 is provided with invvardly projecting shoulders or pads 18 arranged to register with and occupy the opene ings 11 in non-eontact relation to ring 2, the inner faces of said shoulders being substantially flush With the inner face et said' ring 2. rEhe areas on ring 2 between shoulders 13 may be open or apertured, but on the side adjacent to the terminal these spaces are preferably occupied each by a web part 2c in order to provide greater current conductivity.

The shoulder faces 13 oiz ring 2 and the stud bearing face areas 1d oit ring 2 between the apertures 11 are drilled to receive suitable astenings such as screws 15 or the like for securing the brush studs 1, which are provided With broad fiat bases el adapted to set stably against the faces 13 and 14, said* stud bases being drilled as at 16 to correspond with the drillings 16 at 13 and 14.

The bearing pedestal'6 may be of substantially the usual form of construction used in dynamo electric machines, the

8 mounted adjust- 'I bracket arms 7 of suitable form and preferably four in number being provided thereon for supporting the clamping ring 8. Each arm 7 is apertured as at 7 to receive a suitable fastening, as one et the four bolts 8u whereby the clamping ring 8 and the squirrel cage structure carried thereby as a Whole may be secured in place on said pedestal.

The clamping ring 8 is mounted so as to rock adjustably about the armature axis of rotation through an angle suilicient to swing the brushes to their neutral or non-sparking position. ln order to provide for this the outer face orp said ring 8 is formed With a double flanged groove 8b adapted to receive loosely the heads of the bolts 8a. Said groove is provided With an entrance-Way on its inner side as shown at 8c, for admitting the bolts 8a in assembling the parts. When the parts are to be assembled, as shown in Figs. 9, 13, 15, and 16, the bolts 8a are applied to the groove 8b and to the bracket arms 7 Where they are secured by tightening the nuts 8d as soon as the proper angular position of the brush studs is determined With respect to the iield poles 12.

Each or" the brush studs l comprises a shaft or body part 4l suitably formed along its length to receive and support the brushes or suitable brush holders 17 wherein the brushes 18 may be secured. On one end o the shaft e, lWhich may be designated as the base, the stud is formed or provided with the boss il to lit against the clamping ring, and at its opposite or free end is provided with an outstanding radially disposed arm 19 extending at an angle out about 90O`to the main axis. rlhe stud base drillings 16 are preferably elongated and slot-like, as shown in Fig. 23, each With its length disposed so as to extend radially With respect to the .fu-mature axis when assembled, thus providing tor radial adjustment oi the studs in accordance With the form ot brush holders 17 and brushes 18. The studs may to advantage be provided each With shoulder guide means el@ onits base to coact With corresponding guide slots d disposed radially on the ring bearing faces 13 and 14 respectively, as shown by Figs. 15 and 23. Said guide means assure maintenance of the correct and uniform angular spacing and position of the studs more positively than would the slots 16 and screws'l alone. Said arm 19 is formed and adapted to support the equalizer 3, and is also of sufficient strength and rigidity to brace the structure and prevent vibration. The outer end of the arm 19 is apertured, as illustrated by the radial slot 19 in Figs. 11 and 14, to receive a suitable equalizer fastening 20, preferably in the i'orm of a bolt adapted to fasten the equalizer in place thereon.

in order to provide for maximum, of

)flexibility respecting grouping of the vice comprising a stationary jaw 17 and ascrew 17 mounted to coperate therewith to grip said rib, said jaw 17 having its active :tace inclined to correspond with the coacting face of said rib, and said screw coacting with the opposite face. As will be appa-rent from Fig. 11 each stud 4 is adapted to receive a series of brush holders, which may be either set closely together or otherwise as may be required. Mireover the position of any brush holder may -be readily changed by loosening the screw 17 and sliding the holder more or lessk in either direction. The brush holders on adjacent studs may to advantage be staggered, so as to more uniformly distribute the wear on the commutator.

The equalizer 3 comprises a pair of rings 3"and 3, preferably'of fiat annulus shape, disposed side by side and clamped by means of the bolts 2O to opposite sides of the stud arms 19, each ring being in electrical contact with alternate arms respectively and insulated from the othersby suitable material,l

as for instance liber board strips or plates 21 and bushings 22. Said rings have holes 3fL suitably spaced apart :tor the bolts 20. v In any case where the studs-4 are especially long the bracing eil'ect of the equalizer device 3 may to advantage be increased by making the rings relatively wide, as shown at 3b and 3 in Fig. 22. The equalizer rings serve to connect all of the brush studs of like polarity respectively at their free ends, and

although normally little if anycurrentlows in them, still they assure good circuit connections Jfor 'all of the studs, and compensate for any undue resistance either in the body of any stud or in its connection to its yoke ring conductor 2 or 2" at its base 4.

Main line terminals for each end of the machine are provided as follows: The brush yoke ring conductors 2 and 2 are equipped each with an edgewise projecting lug 23, the

outer end ot which is formed as or provided with a terminal proper 24 adapted for effectively connecting the line circuit to the ma-V section, and one side of each terminal laps over the edge of the adjacent conductor ring 2 or 2. The terminals for each pair of rings 2 and 2 are positioned on opposite sides of the machine, so as to be independent of each other and so as to provide a symmetrical assemblage. The parts are preterably so arranged that terminals of like polarity shall be on the same side of the machine, and such terminals may either be connected together at the machine, which usually is preferable, and a common line circuit run to the load, or separate line circuits may be provided.

The conventional diagram of Fig. 1 represents the complete circuit for the main current and shows the armature windings and the commutators developed in a plane, the ten-pole field member 12 being shown in like manner.

In the embodiment shown in Figs. 17 and 18 the component yoke ring lconductors are concentric as indicated at 31 and 32. These rings, 31 outer and 32 inner, are connected mechanically by plates 33 and 34 of oblong shape, bolted thereto as at 35. Alternate plates, namely the pointed ones 34, are in electrical contact with the outer ring or conductor`31 and the other plates, namely the rectangular ones 33, are in like relation to the inner ring` or conductor 32, one end of each plate being insulated from the ring which it overlaps, as shown in Fig. 13. One

of the plates y34 is provided with an eXtension 34 the end or" which is turned over to constitute a terminal 34 corresponding with the terminal 24 on the opposite side of the yoke ring on conductor 31. This modi lied yoke ring combination is mounted on the clamping ring 8 in substantially the same manner as shown in Figs. 13 and 16, the bolts 35 serving to secure same together.

v In the embodiment shown' in Figs. 19and 20, the yoke ring conductors 41 and 42 are disposed one in iront of the other substantially as in Figs. 15 and 16 but are formed somewhat differently. In this instance the inner conductor ring 41 is provided' with radially disposed inward arm members 43 adapted to serve as seats to receive the studs of one polarity. The outer ring 42 comprises an outer rim part 42 and a hub part 42 connected by spoke-like seat members 44 adapted to receive the correspondingl studs of the other polarity. rlhe bearing Afaces of the last mentioned seat members are raised so vas to be flush with the corresponding seat faces of the arm members 43 of the inner ring 41. Said rings are 'fastened together and to the clamping ring 8 in mutually insulated relation by the bolts 45, as will be understood in view of the drawings.

Although several forms of embodiment of certain lfeatures of this invention are herein shown and described in connection with the preferred embodiment it is to be understood that numerous details of the constructions shown may be altered or omitted without departing from the spirit of this invention as defined by the following claims.

I claim:

1. A dynamo-electric machine comprising a brush supportingdevice or double squirrel-cage character, said device including a pair of mutually insulated conductor rings at each end and an even numbered series of suitably spaced brush studs, half of which in alternate succession about the 'squirrel-cage structure are connected at their ends to two of said rings one end to each ring, and the other halt in like manner to the other two rings, the two said rings at one end being connected rigidly and constituting a yoke ring.

2. A dynamo-electric machine comprising a rigid support, a brush-supporting device including a squirrel-cage structure having end rings and connecting bars, one ol the end rings of which is formed and adapted to constitute parte of a yoke ring for mounting on said support, and the connecting bars or studs of which are adapted to carry brush holders.

3. A plurality of brush holders and a combined brush holder support and terminal device for commutating dynamo electric machines comprising a plurality of brush holder studs, in combination with an annular support therefor in the -'orm of a yoke ring, said support comprising a pair of complementary ring members disposed side by side and insulated from each other, one of said members having a series of suitably spaced projecting parts facing axially, and the other member having a corresponding series of apertures arranged to receive said parts, said projecting parts and the parts of the other member disposed between the said projecting parts having faces in substantially the same plane, and said studs being rigidly mounted endwise on saidv faces, each oi said ring members having a terminal, and the brush holders being supported mechanically by and electrically connected to their respective studs whereby the current may all be caused to pass through said terminals.

4L. Means for supporting the brushes of a dynamo-electric machine, comprising an annular support in combination with a compound yoke ring mounted thereon, said ring comprising a pair of complementary conductor members disposed concentrically in fixed relation and insulated from each other, said members being provided with corresponding apertures and projections disposed in common circular alinement'and in mutual registry, and a plurality of brush supporting arms, positive and negative, mounted on the alternate parts of said. members respecl I y I tively in the same circular almement as said apertures and projections whereby in operation all the current may be passed through said members directly to terminals provided thereon, positive and negative respectively. 5. A dynamo-electric machine, having a commutator and a pair of brush supporting studs corresponding to each pair of poles, said studs each having brush holders mounted directly thereon for transmitting current thereto, in combination with a rocker brush yoke ring adapted for setting in accordance with the neutral position of the brushes on the commutator, said ring comprising apair of complementary annular conductors insulated from each other, alternate' studs being mounted directly upon and electrically connected to the component 'conductors respectively, and each of said conductors being provided with a terminal, whereby connection may be made to the machine through a single pair of terminals.

6. 1n a dynamo-electric machine, a frame, an armature, a bracket mounted rigidly on said frame adjacent to the outer end of the armature, a clamping ring secured rockably to said bracket, and a yoke comprising a pair of complementary brush yoke conductor rings, outer and inner, fastened rigidly to said clamping ring but insulated therefrom and from each other, and brush holder studs attached directly to said brush yoke rings, the latter being formed with bearings faces arranged in substantially the same plane in alternate succession 'for said studs.

7. A brush holder stud support in thc form of a yoke ring comprising a pair of electrically conductive annular members disposed side by side in fixed and insulated relation to each other, one of said members having a series of outstanding parts on its inner side coaxial with said support, and the other of said members being formed with a corresponding series oapertures arranged to register with and receive said outstanding parts, the end faces of said outstanding parts being substantially lush with the outer face of said other member, whereby the studs may all be interchangeable and may be disposed in symmetrical circular alinement.

8. A brush holder stud support having a series of stud bearing seats or' dierent polarity arranged alternately in circular alinement in and about the same plane, said support comprising a pairrof mutually insulated and rigidly connected conductive members of suitable shape whereon said seats are provided.

9. A brush holder stud support in the form of a compound yoke ring having a series of stud bearing seats of different polarity arranged alternately in circular alinement in about the same plane, said support comprising a pair of mutually insulated and rigidly connected conductive members whereon said seats are provided, said members being of annular shape and being formed with interfitting parts mutually arranged symmetrically to accommodate said seats.

l0. Brush holder supporting means for dynamo-electric machines comprising an even numbered series of studs adapted to receive the brush holders, a compound yoke ring whereon said studs are mounted, and a pair of equalizing rings secured to said studs opposite from said yoke ring, each group of alternate studs being in electrical contact both with one of the yoke ring memaers and with one of the equalizing rings respectively.

11. Brush holder supporting means for dynamo-electric machines comprising an even numbered series of studs adapted to receive the brush holders, a pair or" compound rings suitably spaced apart and between which the said studs are fastened, one set of alternate studs being in electrical contact with one of the complementary parts of each of said rings and the other set of alternate studs being in electrical contact with the other of the complementary parts of each of said rings, and rigid means whereby one of said rings is directly supported.

12. Equalizing means for brush holder studs comprising a pair of conductor rings disposed adjacent to each other, and each of the studs having a part extending between said rings and connected electrically to one or the other of said rings, the connections for each ring being to alternate studs.

18. In a dynamo-electric machine having a frame and a commutator, a series of brush holder studs suitably disposed and supported at one end in due position with respect to the frame and commutator, in coinbination with equalizing means disposed outwardly from the opposite ends of said studs and comprising a pair ot conductor rings disposed side by side in spaced relation and insulated from each other, each ot said studs having an arm extending outward between said rings, and each of said rings having electrical contact with alternate arms respectively and being insulated from the other arms.

141. A brush holder and stud formed for ready mutual engagement, one of said members being provided on one side with a pair of shoulders suitably spaced apart and the other of said members having a projecting part formed and adapted to lit between said shoulders, and clamping means on one ot' said shoulders adapted for setting tightly on said projecting part to secure said members together detachably.

15. A brush holder and stud formed for ready mutual engagement, one of said members being provided on one side with a pair of shoulders suitably spaced apart and the other of said members having a flaring projecting part formed and adapted to lit between said shoulders, and clamping means on one of said shoulders adapted for setting tightly on said projecting part to secure said members together detachably and the other shoulder having its inner face inclined inward to correspond substantially with the flare of said projecting part.

16. In a dynaino-electric machine having brush yoke means, a clamping ring for rockably supporting the brush yoke means, said ring comprising an annular plate adapted for securing of the brush yoke means to one side, and on the other side being provided with a circular slot concentric with said ring and formed with overhanging iianges or lips adapted to slidably retain the heads of bolts or the like, one wall of said slot being suitably apertured to admit the bolt heads in assembling the device.

17. A combined terminal device and brush-stud mounting of yoke ring character for dynamo-electric machines, comprising a. pair of mutually insulated conducting plates of annular shape disposed side by side with adjacent parts formed to interit and provided with bearing faces to receive the studs, and said plates er rings being formed each with a terminal lug projecting edgewise thereof, said lugs extending in mutually opposite directions.

18. A pair of mutually insulated brush yoke rings adapted to support the brush studs, positive and negative respectively, and to collect the current therefrom, said rings having outstanding edge lugs with terminals thereon, each extending in a plane nearly tangent t0 but spaced somewhat from the edge of the adjacent ring.

19. brush holder stud having a plural- -ity of brush holders ixed thereon and posi tively engaging the same against lateral displacement, said holders each having releasable clamping means adapted ttor setting on said stud, and said stud having a longitudinal clamp-engaging rib part of uniform character adapted to receive said holders in longitudinally adjustable and non-turning relation.

20. In combination a brush holder having adjustable jaws and a supporting stud therefor having a rib. part extending lengthwise and adapted to enter between said jaws for positive engagement thereby, said part having sides flaring divergently toward the brush holder and said sides being embraced by said jaws.

Signed'at Chicago this 4th day of Jan. 1918.

VALTER J. VVARDER, JR.

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