US1310042A

US1310042A - William s

Info

Publication number: US1310042A
Authority: US
Publication date: 1919-07-15
Anticipated expiration: 1936-07-15

Description

w. s. WILLIAMS. ELECTRICAL APPARATUS.

APPLICATION FILED IJEC.14. IQIB. l

Iaented Juy L5, ISIS).

STATESl PATENT- ()FFICE.' i i WI'LLIAia s. WLLLiAMs, OE PiTTSEIELD, MASSACHUSETTS, Assieivoii. To `*GENERAL I ELECTRIC COMPANY, A CORPORATION or N EW YORK.

ELECTRICAL APPARATUS.

To all whom t may concern:

Be it known that I, lViLLiAii SQWILLiAus, a citizen of the United States, residing at Pittsfield, in the county' ot' Berkshire, State oi Massachusetts, haije invented certain new 'and useful Improvements in Electrical Ap.-

pai'atus, of which the following is ai specification.

My invention relates to 'electrical apparatus and particularly to apparatus having .windings supported about the legs Otl inagnetic cores, such as are employed iii transv 'foriners, reactances and the like.

rl`lie object of my invention is to-provide an improved means for retaining the windings in a predetermined spad relation which is reliable, safe and readily manufactui'cd.

lVhen assembling windings about the leg of a' magnetic core, in the manufacture of electrical apparatus, it-is necessary that cerspacing devices extend beyond the edges' of the windings, it is generally customary to place distance pieces between these ends, or if the spacing device should have a bent over portion tlien the distance pieces are placed between the bent portion and the windings so that the one device maintains the desired spacing effects in both directions. In either oi, these ways of putting in the distance pieces the mutual friction between the parts has generally been relied upon to retain the spacing devices and the distancing parts completely intact.. In drying, however, these parts not infrequently become loosened, and occasionally become displaced.

In the practice of my invention I have provided a member for tying in such parts to avoid such displacement, the member being combined in such away-that it becomes a part of the spacing means without iinpairing its insulatingqualities, whereby a rigid construction iseonsequently at all times provided. l

For a more complete understanding of the Specification of Letters Patent: Patented J 1y-v 15, 1919, "Application-filed December 14, 1918. Serial No. 266,752 i I A embodying my invention; while-Fig.l 2 shows 60 a section of the device shown in Fig. 1 taken on the line 2 2 in Fig. 1. ',Fig. 3 is a view similar to Fig. 1 showing another embodiment of my invention; F ig. 4 being a Section thereof taken on line 4 4. Figs 5 to -11 65 show various .forms of spacing devices eni'v i Vployed in the (practice ,of iny invention. Fig. 12 shows a etail in the arrangement for tying together the parts. Fig. 13 shows a detail in the assembly of the windings and spacing devices; and F ig.,14 shows my invention employed to secure spacingstrips to insulating collars.

Referring now to Fig. 1 of the drawings, 10 denotes a magnetic core, of any suitable 75 type, on the leg 11 of which are mounted interleaved disk coil' windings 12. These windings would be suitabl Vconnected as high and low voltage windingsl Where the apparatus embodying my invention is a 80 transformer, to which type of electrical apparatus my invention will have its widestapplication.

he windings 12 are insulated from the core `11 by the inner insulating cylinder 13, 85

shown as interposed between the core 11 and the windings 12. An outer insulating cylin- .der 14 is provided to insulate the windings shown on leg 11 from other windings, or from exterior grounds such as tliehousing which may inclose the apparatus, or from other portions of the core. For this reason 'i `portions of the ends of the cylinders are illusform thereof is shown in F ig'. 5 and consists- Y. be slipped over-.the edge of a Winding.

lpreferably each formed spacers shown in Figs. 5 to 11., The simplest of two independent leg members 20, having one `or more distance pieces, or filling menibers 2 1 inserted therebetween at one end.

To secure these legs and fillers together, I formv elongated openings 22 and-23'in the leg members and fillers respectively as shown in Fig. 12, and insert a tying member 2 4, which is in the form of a strip having a section Whose cross-section snugly lits the

openvings

22 and 23; the tying member being formed or bent to lie along the leg members 20, so that it is consequently not easilydis placed having'once been properly placed-in position.

The legs,` tying member and fillers are of insulating material such as press-board, iberon the like, the assembled spacer being adapted to Those shown 'ins Figs. 1 and 2 are slipped pver the inner edge of each coil of the Wind- -ings 12 andare spaced circumferentially from each other by'an'angle of approximately 60 degrees. By placing the spacers'lGover the 4inner edge offa Winding disk, a solid insulating abutment is placed between the Winding and the cylinder 13'so that a concentric arrangement ofthe windings about such cylinder is insured. The spacers 16, in this instance,

` are made also sufficiently long to extend' windings.

beyond the outer edge vof the winding disks in orderto maintain the external cylinder 14 in a spaced concentric relation to the Obviously, however, the spacers 16 could be placed over theouter edge of y the Winding disks, vor some placed over the outer edge and some over the inner` edge with the same results.

In assembly, when the winding disks have had the intended number of spacers properly placed about their edges, they are stacked concentrically, so 'that `the sides of the spacers 16 abut as shown at 25 i-n Fig. 13E

'thus providing a solid abutment from one end of the Winding stock to the other 'for/ any axial impulses imparted t9 the windings on account of magnetieor other reactions between the windings.

In the spacers 16, the tying member 24 is of course. narrower than the legs 20 so that in that in the portionof the Winding stock `shownin Fig.' 13, it is seen that edges of these. tyingmembers are not flush with the edges of the'leg members, in consequence of which a longer leakage pathV vis Aprovided from one Winding disk to another ,over the edge of the spacers than itall the edges had been flush. Through the spaces about the windings 12, thus provided by thefuseof spacers' 16, a cooling and ventilating.mediuxmsuch for instance as oil -or ain-will circulate. The

passages shown in Figs. and 2 permit of the unimpeded movement of such cooling and ventilatlng medium in both axial' and yradial directions over the windings.

Should it be desired to provide a greater distance between t'ivoadjacent winding disks than is provided' by the superposed thicknesses of the members 2O and 24 in spacers of the type shown4 in Fig. 5, as indicated in Fig. 13, the spacer to be employed would be assembled ivith one or more additional legmembers or vfillers such as shown at 30 in Fig. 6 the thickness of which is added to the superposed thicknesses of the original parts. The spacer shown in this figure is assembled in precisely the same manner as that shown in Fig. 5 and comprises, in addition to the three leg members, distance pieces 31 -iuser-ted between one such member on one side and two on the other all of which are secured together by a tying member 32 snugly passing through suitably formed slits in the parts ;v the tyingmember being also formed to prevent it being readily displaced after assembly.

Tere -it desired to provide a narrower distance between adjacent Winding disksv than is afforded by the spacer shown in Fig. 5, a simple U-shaped member 35 combining' the leg members and securing members in one, 'having slotted 4distance )ieces 3G slipped thereover as shown lin Fig. t. 'Such a spacer, however,y would preferably be reinforced by an exterior tl-shaped memberv gaged by this ormo/fspacer, are secured protuberances or buttons 41 means of rivets 42; which buttons and rivets should both be :formed of insulating material. The legs 40 have interposed therebetween distance piecesel, whiclrare secured by a short tying member 44. `Exterior members 45 are, in this instacd'shoivn tied in. by

member 44 and serve a purpose similar to.

a Washer.

The protubenances on the legs of this type of Spatzen-however, may be and preferably would be secured on the leg member by one ferred manner ofsecurig protuberances is illust-rated in Figs. 9, 10, and 11,.but particularly in Fig. Hei-c the legs 50 are slotted across one end to receive a tyingfmember 52 or securing or more tying members instead of by rivets Where my lnvention ispracticed. -This prethe interposedwdstance pieces 51 In .addithj tien to the end slot, each 'leg member 50 has two longitudinal slots through the body portion over which are placed similarly slotted -ot the tying members 54 and are similar to the tying member 52, but ai'e placed back to back, the bent-over portions extending in opposite directions away from the slot. This mode ot securing the protuberances prevents thfrom being readily displaced troni the legs 50 in any direction, and has better insulatingproperties than that shown in Fig. 8.

When spaces, such as shown -in Figs. 8 and 9 are used, they would not be spaced around the edge of the' winding disk so as to abut one. another -in the winding stack, asl

shown in Figs. 1 and 2, but would be so placed that every other .one would be omit- -ted from Athe normal arrangement shown in' the first figures. The disks having spacers ot this type on their edges would be assembled in staggered relation so that the spacers on the adjacent disks would bear onadisk at the points from which the spacers were omitted. This arrangement` is shown in Figs. 3 and 4.

In Figs. 3 and 4, 10 denotes a core hav'-` ing a leg 11 surrounded by disk windings -12 which are insulated interiorly from the core. by a cylinder 13 and exteriorly by acylinder 14' andt'rom the -yokes by inserted insulating pieces 15. Each disk of winding has a spacer 1li of the general type shown in Fig. 9'spaced about the circumference at points substantially 120 degrees apart, as shown in Fig. el. The under` disk whose spacers are indicated by'dotted lines would preferably have spacers having their protul'ierances placed thereon slightly displaced, as indicated on the spacer 16, so as to provide support for all the turns in a coil.

The spacers on the top disk in Fig. 3 are seen to bear on the winding disk below at the points from which spacers have been omitted as shown at a, and so on throughout the whole stack of windings. Here'again the spacers are shown as placed over the inner edges ot the disks in order to have a solid abutment therebetweenon' the inner .cylinder 13.

It is obvious that where it is not necessary to take the precaution of preventing the protnberances on the legs from being readily displaced in all directions, a single tying member for securing theprotuberances to the legs will suice. Spacers having" rotuberancessecured in this manner are. s own in Figs. 10 and Il.

In Fig. 10, there is shown a legt() having three slits across it. The one across the end receives the tying member 62 for secur'- ber traversing the perforation in said lilling the distance pieces 61. Those through the body. receive the tying members 64 ylgliicl secure the laminar. 63 in place to ori'i:-.`"t l l protuberances.

if.' In like manner, in Fig. 1,1, :here-is shown a le 70 slotted across the end to receive atying member r2 to-:secure the distance pieces 71, but in place ot' the two additional slots 'being placed across'the body to secure the protuberances as in Fig. 10, twolongitudinal slots arhere employed a little to one side of the center line-of the'leg. rl`his permits the tying members 7 4, which secure the laminae 73 in place, to overlap the lamin sufficiently to give an even bearing surface. In Fig. 14.- my invention is shown asapplied to a portion of an insulating collar or barrier 80. Here the barrier 80 is provided with elongatedjopenings near one edge, with which openings, the openings in the fillers S1 are placed in register. A tying member 82 is then passed therethrough to secure the whole; the barrier when thus provided with spacers being ready' orassembly in a' windingconstruction. f l Those skilled in theart will readily understand that spacing devices such as I have described' may be passed over the edge of cylindrical windings-as well as disk windings, where it is desired to produce a winding 'structure for an electrical apparatus havingv predetermined spaced relations .among the parts without employing parts liable to become easily displaced.

While I have here shown and described several embodiments of my invention which are, at present, the best means known to me lfor carrying the same into eect, I would have it understood that vthey are merely illustrative and that I do not mean to be limited thereby to the precise details shown, nor in the choice equivalent arrangements except as defined. in my claims hereunto annexed.v

What I claim as new and desire to secgure by Letters Patent ofthe United Stat-es, .isz-

l1. In ab electrical apparatus, the combination with-- windings composed ot coils in assembled relation, of spacinfr means for said windings each comprising e members extending over the edges of said coils, filling members, and a vsecurin member arrange to form a self-retaining evice.

9.. In an electrical apparatus, the combination with windings composed of coils in assembled relation, of'pacinguneans for said wind/ings each comprising leg 311cm"l ers extending over the edges of said coils, perforated tilling members, and a. securing` mem ing members and formin in coperation with said other members a' -shaped spacing device.

3. In an electrical apparatus, the combina.

tion with windings composed of coils in as'- 13e ing members, said sembled relation, Aof spacing means for said windings each comprising leg members e2;- tendin over tlieedges'of said coils, perfo- 4rated filling. members, and a securing member traversing the perforations in said fill-- securing member being the leg members and to formed to lie along' from .the assembled p- 'their perfor-ations arranged to register with those in said leg members, and a securing member arranged to traverse the aforementioned vperfor-ations,thereby forming a uni'- ta'ry spacing device.

5. In an electrical apparatus, the combinaftionnvitli windings composed of coils in assembled relationJ'of spacing .means for said windings comprising perforated leg members extending over the' edges of said coils, perforated laminar pieces having their perforatioiis in register with these members and arranged at points to secure -.desire d spacing effects, Vand securing niembers arranged to traverse the aforementioned perforations.

6. A spacingl device for electrical windings comprising leg members, perforated laminar elements cooperating with 'similar perforations in said leg members to secure a desired spacing effect, and a tying member travel"- ing the aforementioned peiforations.

7. A spacing device for electrical windings comprising perforated leg members, 'perforated laminar elements assembled at desired points along said leg members so as to have the perforations in register, and a securing member snugly traversingthe perfo` rations and formed to resist displacement from the assembled position.

8. A spacing device for electrical windings comprising leg members having perforations across one end, and perforated distance pieces in register' with the end perforations in the leg members, and a securing aber having a U-sliaped form passing snugly through the perforations and ar` ranged to have its legs overlie said leg menibers.

In witness whereof, I have hereunto set my in said leg hand this 10th day of Dee.` 1918.

WILLIAM s. WiLLiAMs.