US1860310A - Machine for removing armature insulation - Google Patents

Description

' H. H. EATON 1,860,310

MACHINE FOR REMOVINGARMATURE INSULATION May- 24, 1932.

Filed April 26. 1928 '5 sheets-sheet 1 gmntoz //2 f/d/"f/Sd/f 0/0/1 May 24, 1932. H. EATON 1,850,310

MACHINE FOR REMOVING ARMATURE INSULATION Filed April 26. 1928, 3 Sheets-Sheet 2 gmmuu Patented May 24, 1932 l UNITED 'STATES HARRISON H. EATON, onToLEno, onro, AssIeNon T {III-TEE;ELECTRIC245111130sIlI'lE-COMEv P EN ' IAZN'Y, or TOLEDO, oHIo, A CORPORATION 0F onzroh 1 ivmcnmnron REMOVING ARMA'rUnE rnsuLATIon Application filed April 26,

lhis invention relates toa machine for removing material ifrom articles of manufacture and particularly to means for removing the surplus insulating material remaining upon the periphery of an armature after the coils have been inserted? therein. up I In the manufacture-of armaturesifor generators or other dynamo electric, machines and particularly the-smaller sizes thereof, 1t

is the practice to insert a continuous strip of insulating paper; or other material into the slots of an armature, the paper extending over or covering "the exterior portions of the teeth formed by the spaced slots The, coils are theninserted' in the slots in the usual manner and the insulation lying upon the armature teeth is subsequently removed by a cutting or shearing operation. These meth Another object of the inventlonisthe prol vision of a machine of this. character which will remove the surplus insulation from the teeth of the'armature in a comparatively I parent from the followingdes'cription, in which reference is had to the accompanying short spaceof time thus materially redncing the manufacturing costs of armatures.

Still another object'is the provision of a machine of this character which simple" in its operation, notllahle to get out of order and which may be safely operated by inexperienced workmen; r r v, v j Other objects and'v-advantagesfwill be apdrawings: illustrating a preferred embodi: ment of my inventlon wheremithe similar reference" numerals refer to similar parts throughout the several views. f In the drawings Figure I is a side machine of my invention.

' construction,

elevational view of the ordama-ged brushesb.

192s. seriain 273,086. I Figure II is a top plan shown in Flgure I.-

View of themachine I v FigureI-II is a detail longitudinalsectiohal view of an armature. V i V Figure IV is a longitudinal sectional view through the I the line IV-IV: of Figure II."

. FigureV is asectional detail one of the brushes forming chi11e- 'i' j i or Figure VI is an end view of the parts shown'in Figure Vs insulation from armatures,wbut it is *to be a uses machine taken substantially on f view through a partofthe ma-" 1 Referring to the drawings in Ihave shown my invention as used for removing 7' j 05* understood that I contemplate" the use ,of',

my device wherever thesame may be found applicable.

the weight-thereof to a minimumfthe base being formed witha shelf like portion-2 having'a pair of upwardly projecting members 3 and 4:. Journ'alled in the members 3 and d is a pairof substantially: parallel shafts 6 and 'Zprovided with suitabledriving pulleys 8 and; 9'fixedly secured thereto-and arranged:

The machine comprises} a base I ,1 of vshell like construction inorderto-reduce transversely out of alignment;- jThe pulleys 8 and 9am adapted to be driven by means of belts (notjshow'n) 1 to a'v'suitable source of power." The extremitiesof the shafts'o and 7 project through the member i and areeach' provided with a; rotary brush of identical one of which is shown in detail in Figure V. i r

The end of each shaftis provided with a reducedportion 11 which snugly receives a hushing12 adapted tofrotate with the shaft:

by means; of akeyor pin-13, 1 Mounted upo the bushing 12 isa plurality J of 'sections ..of

brushes -143 fabricated of wirejor other] 1 suitable abraiding, materialwhich: are suit-j ably held in compact arrangement von the 'bushingflbyfineans ofla, washer llh and .a i

by means of a nut 18. This particular method nut16. The Complete assembly of thehrushes and bushing 12-are ;fi'xedly'held;onthe shaft of mounting the brush sections makes it pose-f U sible to quickly and easilyrreplace any worn.

The brushesl'form, as particularlyshown Y 2i i L f in Figure IV, a support for an armature A,

having insulating paper A or. other material on its periphery; the armature being held in engagement with the. brushes bymeans ofa I roller 20 or drum made of rubber or other suitable material contacting the periphery thereof, and which isrotatably journalled in. bearings 22 in an arm 23.. One end ofthe 1' arm I23is, loosely pivoted upon a sha-ft 28 and'is provided With'a weight 24, the function of the latter, beingto hold the roller in frictional engagementwith the periphery of the armature A. The arm 23 is also provided with a handle portion by which the operator may elevate the arm and disengage the roller 20 from the armature to remove the same and insert a new one. Iihave also pro- 7 1 vided means whereby the arm 23 may beele V "vated by the operators foot. ;'which' means comprises a lever SO-suitably fulcrumed upon theshaft 28, 011mm ofthejlever-beingar ranged adjacent the arm '23and having an" 7 inwardlyturned portion 31 which is adapted to extend beneath the arm; the other en djof the lever i3 0 being connected by means of a rope or cable; 32 to a suitable operating treadle (not shown). Itwill-beobvious that a downward ,pullon the cable 32 will oscillate w i vating the'latter.

arm 23 from swinging into engagement Wlth the lever '30, bringing the portion "31' thereof into engagement with the-arm thereby elef In order to prevent the the". revolving brushes -14 wh'en the armature hasjbeen removed from the 1n achine, 'I have provided suitable stop 27 which-is adapted to engage the lever to limit the downward movement of the arm23fand parts carried thereby. The arm 23 maybe swung to an out -of-theeway position shown in dotted lines inFigure IV. when the machine 'is'notin use. Thelroller 20.is adaptedto be driven at a comparatively slow speed in order *to cause v rotation" of the armature A while in" engage-I I ment with the brushes 14, the driving means comprising a sprocket "34; mount-ed upon shaftv 21 carrying the roller 20. 5am isconne'c'ted by meansof achain 35 to a sprocket '36 fixedly mountedupon the shaft '28 and Shaft 28 is-journalled in bearings in the {upper-extremities of projections 29. form'- ing integral; parts of the base jFixedly.

mounted upon one-extremityof the sha ft 2:8

isra miter gear 38 meshing with 1 a similar .and smaller-miter gearT39 carried upon 7 shaft 40, the 'latter being suitably journalled the member s41 and {42 also forminginte5 I gral parts of the base' 1. Adjac ntthe bear,- 1ng 42 is a worm wheel-L44 secure'dlto the shaft- 40,;1whichjisadapte'd to; mesh with and be driven by-a wor 46 secured to alongitudi I nally extending shaft 47,1ournal1ed for rotation in1bearings'48, the outer endjif'the' shaft 7 47 carrying a pulley 5O which may be con-i necte'd by a suitable belt" (not shown) to a source ofpower. iR-otationof the shaft 47 operatestodrive the shaft through the worm 46 and worm wheel 44, theshaft 40 in turn driving the sprocket 36 through the medium of'the gears 38and 39,lthus causing rotation of: the roller 20:at a greatly reduced 7 speed as compared with the speed-of. rotation.

of the'shaft-47; The shafts 6,? and, 47 are adapted to, be driven-byseparate driving means so that where several machines of this type arearran'ged in "batteries they may all be drivenfro-m a 'common source of power.

The extending portions-0f the shaft B of the armature .A are adaptedto'receive bush- 7 ings and 56 which, when the armature is in position;- in thejm'achine, are adapted to projectinto the' vU-shaped guides formed, I

upon members .58; and 59' which are secured to supporting blocks 60 and 61,4118 latter being supported-upon and a djustably secured to the shelf like portion 2 of the basel The purpose of the bushings 55 and 56onthe ar-' mature} shaft B and the adjustablesupports 60 sand; 61 are to provide suitable means whereby armatures having shafts of varying diameters and lengths may be accommodated in this machine. The blocks 60 and Glare p IfOVldeClWithvertical bores 65 within which arepositioned pins 66, provided withflanged portions "intermediate vthe ends thereof,

springs 68 "being interposed between] the flanges of'the. pins and the; extremities of;

the boresj65'. The;pur.pose of: the pins 66 yis tojautomaticallydisengage the periphery of. V the armature from the brushes when'thearm upwardly,-- The weight of: the r 23 is swun armature arm28' and the parts carried thereby is suiiicient to compress the springs 68' andpermit theperiphery of the armature 1 tofcontact with the brushes when thearma-v ture is properly positioned within the guides 58 and'59r lows Assuming roller 2OYare rota-ting as hereinbefore de-H I scribedanarmatureis first provi'ded'with the jbushings'55 and 56 and is'then inserted between theguides'58 and 59. 'The'arm' 28 is then manipulated to bring the roller 20 into: engagement with the periphery of thearmav ture, the weight of theparts compressing the springs 68 and permitting the armature to contact with the, rapidly rotating brushes 14. V It willbe obvious that the rapid rotation 1.5 of the brushes'14 will abraderor wear'away V the surplus insulating material'overlyingthe exterior'portion's of the armaturete'eth; whiclr hat the a The -operationof the machine is' as folmaterial is comminuted or pul'verizedfand 1 passes downwardlythrough-the"opening 5 in the base to be' subsequently. carried away by means (notshown). The armature A is per'- mitted to complete 2 or?) revolutions or until the excess insulating material has been-removed from the periphery thereof The arm 23 is then elevated either by manipulationof the handle 25 or the treadle' operating the ca ble 32, the spring 68 immediately moving the armature upwardly out ofengagement with the brushes 14. Thearmature may then be removed and the cycle of operations performed upon another armature'without stopping the machine.

The embodiment of my invention'herein shown and described is to be regarded as illustrative only, and it is to be understood that the invention is susceptible to variation, modification, and change within the spirit and scope of the subjoined claims.

claim and desire to secure by Letters Patent 1. In a machine of the character disclosed, in combination, a frame; movable abrading members supported upon said frame; means for yieldingly supporting an armature adjacent said abrading members; a member engageable with the armature for moving the latter into contact with said abrading mem- .bers and causing rotation of the armature.

2. In a machine of the character disclosed, 1n combinationxa frame; a movable support for an armature; a plurality of abrading.

members carried by said frame; means for holding the armature inengagement with the abrading members comprising a drum of yieldable material; driving means for the drum; means to move the drum away from described,

in combination a frame, a revolving brush engagement of the armature.

3. In a machine of the character carried by said frame, resilient means for holdmg an armature over said brush; a.

weighted member of resilient material pivotally mounted over said brush adapted to retain the armature in engagement with the brush; and means for rotating said resilient member. 7 V i r 4. In a machine of the character described,

in combination a frame, a brush carried by said frame; means for rotating said brush;

an arm pivoted upon said frame; a drum of resilient material carried by said arm, means for supportmg an armature between said brush and said drum, said drum acting to retain the armature in engagement with said brush; driving means carried by said pivoted arm for rotating sa1d drum to impart rotat1on to the armature, sa1d driving means adapted to function irrespective of the position of said drum; and means for rendering said drum ineifective to rotate the armature.

In testimony whereof, I aflix my signature.

HARRISON H. EATON.

Having described my. invention, what I

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