US849670A

US849670A - Dynamo-electric machine.

Info

Publication number: US849670A
Application number: US23475904A
Authority: US
Inventors: Samuel S Forster
Original assignee: General Electric Co
Current assignee: General Electric Co
Priority date: 1904-11-29
Filing date: 1904-11-29
Publication date: 1907-04-09
Anticipated expiration: 1924-04-09

Description

No. 849,670 PATENTED AE'R. v9, 1907.

SS. ms/TEM DYNAMC ELECTRIC MACHINE;

APPLUATION FILED NOV. 29. 1904.

2 SHEETS-CHEM 1.

NVENTQI Samuel ForSCer;

No. 849,670. A a y PATENTED AEE. 9, 1907.

A v A s. s. ECESTEE.

DYNAMC ELECTRIC MACHINE.

APPLICATION FILED NOV.29, 1904.

2 SHEETS-SHEET WITNESS@ INVNTCRI ,Z6/7m. amuelforsen:

1 13s/MM of New Yor nnrrnn strains PATENT espion.

SAMUEL S. FORS'IER, 0FI SCHENECTADY, NEW YORK, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

DYNAMQELEGTBIC MACHINE ne. eeacvo.

TQ all t may concern.'

citizen of the United States, residing at Schenectadf, county of Schenectady, State have invented certain new and acterize my invention are pointed out and more specifically to .a certain advantageous construction emplo 4ed to support the .end of the armature-con uctors in such ma-4 chines,

The various features of novelty which chars articularity in the claims annexed to and orming a part of this specification. Fora better understanding of myinvention, ever', reference may be hanW nyng drawings and description, in'whieh I have illustrated. and described one embodi- 'v ment ofm invention.

Cf the rawings,Figure 1 is an elevation, with parts broken away and in section, showing a vertical-'shaft dynamo-electric machine equipped with my invention. Fig. 2 is Aa plan view'o one of the internal coil-supports employed. Fig. 3is a section on the line 3 3A of Fig. 4. Fig. 4 is a plan view, on a larger scale than Fig. 2, showing a portion of the eXpansible ring. Fig. 5 is algection on the line 4 4 of Fig. 4. Fig. 6 is aplan view show.-A ing a portion of the support for the expansible-ring. Fig. 7 is an elevation showing the same construction as Fig. 6, and Fig. 8 is a section on the line 8 8 of Fig. 2 .of the support for the expansible ring.

Referring tothe drawings, 1 represents the main trarne of a vertical-shaft alternator vadapted to be directly .connected to and mounted upon a steam-turbine. The annular armature-core 2 of the machine is secured to the frame 1 in the usual manner. The elementof the dynamo-electric machine located in the annular cere-in the present instance the revolving field-magnetis carriedpy a shaft 3, the upper end of which is 4journaled in a suitable bearing 4, carried by an end member 5, which is removably secured to the upper end of the frame 1. lThe 'lower end of the shaft 3 is coupled at 6 to the upper end ofthe shaft 7, which may be the main shaft of a'steamturbine. The shaft 7 is shown Speeeeltiee of Letters Patent, t Arploefon filed. Nevemher 29 M04@ Serial No. 234,759- i howto the accolrnpaei Patented April 9` 1907.

journaled at its upper end in a bearing 8, suitably secured to the casing 1.

The ends 10 of the armature-conductors project be ond theends of the `core 2, as shown, an' are bent outward and rest against annular external vsupports or cylindrical the core, as shown. The upper ends 1() 'are held. {igilillstF the external support 11 byan internal annular member formed in two parts *l2 and 13.. 'Thepart 1.3, which is wedgeas is clearly shown Shaped in cross-section,

6o cover members 11, secured to the ends of in. Figs` l and 5, with the blunt edge ofthe wedgenlpward, has its inner surface substantially cflindrical about the shaft 3 as an axis 'an has its outer surface parallel to the surfaces of the hollow cone or shell `formed by the upper conductor end 10,. from.

which it 'is separated by a suitable laye'ref insulating material 14,

y Preferabl the part 13 is formed of a number of 'simi ar. sections' 13', which unite to form `an expansible ring. Oneend of each section 13 isl formed with a tongue .15, while^ the other end is formed with a slot 16. In assembling the sections 13 they are arranged .Se that the tongue '.15 at one end of each seetion enters thels'lot. in the adjacent section.

A bolt ,17 passs, through one Wall of each slotgl and a slot 18 formed 'in the corree spending tongue 1,5.and is tapped into the other wall of the slot 16., thus forming a means for adjustably but firmly securing the Y ends of adjacent sections together.

The portion 12 of the internal coil-su porting member, which may be regarded) as av support or'the eXpansible rin comprises two cylindrical portions 19 an '20, @Oncene tric with respect to each other, the shaft 3', and a horizontal web ortion 21, integrally engaged with the

cylindrical portions

19 and 20. Theme mber 12 is preferably formed of a number of similar sections, as shown at 12', t

The ends of each section 12 are out away,

and the ends of adjacent sections overlap, as is clearly shown in Figs. 2, 6, and 7. The end .Surfaces of the overlapping ends are beveled, and they bear against beveled l shoulders or surfaces formedin the adjacent sections. A radial bolt 25 passesy through' the vinner overlapping portion in one section' and is tapped into the outer overlapping portion of the adjacent section. As shown in Fig. 6, the opening 25 in the inner overlapportion,`through which the bolt 25 passes, 1s elongated. Lugs or projections 26 are formed on the upper side of the outerportion 20 lof the part 12, which engage the upper surface of the part 13.

the bolts 17 are tightened, and the part v13 is.

.thus formed into a rigid' annularmember.

When, as is frequently apt to occur, it becomes desirable to remove the field-magnet from the machine,I the bolts 25 are loosened and the partl2 of the internal support is removed. The clearance" between the fieldmagnet and the art 13 is sufficient to allow the removal of t e field-magnet without dis'- turbing the part 13. The part 13 is proportioned to be stiff enough and strong enough to'hold the conductor' ends 10 in place and prevent injury to the insulation by their distortion when the part 12 is removed to allow the removal of the field-magnet, particularly as the machine is not then in operation and subject to the vibration, more or less great, which accompanies such operation. When the field-magnet is again placed in position, the part 12 of the support may be replaced.

As shown, the part 12 isshaped and roportioned to have the strength and ity necessary to properly support the ends 10 of the armature-conductor and prevent any distortion thereof during the operation of the machine regardless of any accompanyir'lg` vibration. The beveling of the ends of the sections 12l and the elongation of the op'ening 25'-, through which the bolt 25 passes, facilitatesthe assembly and disassembling of the sections 12.

It will thus. be observed that by the use of my two-part internal support I obtain a construction in which the er ends of the armature-conductors are helpdpatvall times in their proper position with suitable firmness, while at the same time I may readily remove 'the field-magnet when necessary.

The internal support 27 for the lower ends 10 of the armature-conductors may be substantially similar tothe part 12. of the u per internal support. The inner surface o the 'sup ort 27 should be conical to correspond Wit the inner surfaces of the cone formed by the armature-conductors. Ordinarily there is no necessity for maln'ng the lower support inf two parts, as the su port does not need to be moved to allow of t e removal of the'iieldnagnet." As shown, the lower support 27 *esmero may be held infplace by brackets 28, secured to the framework 1.

. While l have shown my improved internal coil-support as em loyed at'the upper end only of a vertical s aft-generator, it will be readily understood by al those skilled in the art that it may be equally well applied to one or both ends of the core of a horizontal-shaft dynamo-electric machine.

It will be obvious to all those skilled in the artthat many'changes may be made in the form of my invention without departing from its spirit.

What l claim as new, and desire to Secure by Letters Patent of the United States, is'- 1. ln a dynamo-electric machine, a core formed of laminae, end members between which the lamiae are clamped, windings thereon,. and means for supporting the end 'turns or connections comprising an outside cylindrical coverv and internal clamping means, said clampingmeans comprising a sectional annular member and a `second annular member within the first annular member and arranged to lexpand it, both of said annular members being. separable from the core and end members. f

- 2. In a d n amo-electric machine, the combination ofy a core, windings therein, and means'for supporting the end turns or connections comprising an outside cylindrical cover, and internal clam ingmembers, one of said clamping members eing Aformed of segments which en age the end turns or cor/1- nections, and t e-other ofv said clamping members being located within and arranged to support said segments, both-of said clamping members beingse arable from the core.

3. In a dynamo-e ectric'machine, a vplurality of conductor portions arranged to form an annular shell, an expansib e ring formed of segments the outer surfaces of which engage the conductor portions, an annular member engaging the inner surfaces of said segments, and means independent of said annular member for locking said segments into fixed relation with each other.

4. In a dynamo-electric machine, a plurality of conductor ortions varranged to form an annular shel, an annular internal support therefor comprising two annular parts, one of said parts being readily separable from the other.

5. In adynarno-electric machine, a series of conductor portions arranged to form an annular shell,- an annular internal support therefor comprisingA a portion of slight radial .thickness and another portion of considerl t normally supporting t e first-mentipned portion but readily separable therefrom.l 6. In a dynamo-electric machine, an annular core, conductor portions extending therefrom, and an annular internal support for said conductor portions comprising two field-magnet.

parts norm'ally engaging but separablefrom each other, one of said parts being of greater internal diameter than the other.

7. In a dynamo-electric machine, an an- .nular core, conductor portions extendingv therefrom,v an element, normally located Within said core but removable therefrom, an internal annular support for said conductor portions formed of'two parts, said parts being of different internal diameters, the part having the smaller internal diameter eing separable from the other part to allow of the removal of said element. 1

8; In a dynamo-electric machine, an internal field-magnet, an external armaturecore, 'conductor portions extending from one end of said core, and an internal support for said conductor portions comprising an auxiliary part of greater internal diameter than the field and a main part of'less internal diameter than said field-magnet normally engaging ,said auxiliary ortion but separa ble therefrom to allow ofp the removal of the 9. In a dynamo-electric machine, an in! ternal Afield-magnet, an external armaturecore, conductor portions extending from one end of said core, and an internal support'for said projecting conductor portions formed of two parts normally connected together, jone of said parts being of less internal diameter than the other from which it is separable to allow of the removal of the field-magnet from its normal position within Said armaturecore.

10. In a dynamo-electric machine, the combination of a core, windings thereon, and means vfor supporting the end turns or connections comprising an outside cylindrical cover, lan internal expansible ring, and means for expanding said ring comprising an annular member engaging said ring, said annular member being separable from said core.

In Witness whereof I ,have hereunto set my hand this 26th day of November, 1904.

SAMUEL S. FOR STER.

Witnesses :V

BENJAMIN B. HULL, HELEN OiaFoRD.