US1326223A

US1326223A - Chester h

Info

Publication number: US1326223A
Authority: US
Publication date: 1919-12-30
Anticipated expiration: 1936-12-30

Description

C. H. IHORDARSON'. COIL STRUCTURE FOR'TRANSFORMERS AND THE LIKE.

APPLICATION FILED JAN. 6. I919.

Patented Dec. 30,1919.

A TTORNEY is INVENTOR 6 7 5 @Ef/Zama/ a :adapted to electrical transformers. Howto that type of transformer illustrated in my.

CHESTER H. THORDARSON, OF CHICAGO, ILLINOIS.

COIL STRUCTURE FOR TRANSFORMERS AND THE LIKE.

Original application filed November 6, 1916, Serial-No. 129,779. Divided and this application 6, 1919. Serial No. 269,803.

ing in the city of Chicago, county of Cook and State of Illinois, have invented certain new and useful Improvements in Coil Structures for Transformers and the like; and I do hereby declare that the following is a clear, full, and exact description thereof, reference being had to the accompanying drawings and to the reference-numerals marked thereon and which form a part of this specification.

This invention relates to improvements in windings for magnetic apparatus or devices and the improvements are herein shown. as

ever, the improved windingiherein shown may be used in-Otherpiagnetm machines or apparatus.

Among the purposes of the invention isgto provide a novel form ofwinding'so con structed and arranged as to structurally;

strengthen the winding.

Another object of the invention is to provide an improved constricting band which surrounds or encircles the winding to hold the turns of the winding in place, and also,

serves as one end of the winding. or'coil to which is attached a c1rcu1t wire.

A further object of the invention is to provide an encircling band of this character so constructed as to avoid corona discharge at the edges .of the encircling band and across the coil.

Another object of the invention is to provide means for supporting the inner turns of the conductors forming the winding or coil, constructed with means to force the supporting member outwardly against the inner turns of the coil. Other objects of the invention are to simplify and improve windings of the character described, and further to adapt such windings to high-tension transformers, and the invention consists in the combination and arrangement of the parts shownin the drawings and described in the specification, and as pointed out in the appended claims.

The present invention is shown as applied prior application for U. S. Letters Patent, Serial No. 129,7 7 9, filed November 6, 1916, of which the present application is a division.

As shown in the drawings, Figure'l is a Specification of Letters Patent. Patented Dec. 30, 1919.

filed January side elevation of a transformer embracing a w nding or coil embodying my invention. Fig. 2 is a section on the.line-2-2 of tice. 14 designates the low tensionwinding ofthe transformer and 15 designates as a whole the high tension winding. The core or magnetic circuit and the particular relation of the'high and low] tension windings may follow. any

ent invention, the detail construction, how- The high tension coil: 15 is of ring-like nated construction followin the usual prac- I v preferred or well known j practice and constitutes no part of the pres- '80 ever, being embraced and claimed in my said 'co-pending application, Serial No. 129,779.

disk form and is preferably wound with a f plurality of turns of insulated flat wire, the

several turns of which are insulated from each other; The said'coil is insulated from theu mer yoke 10 bvan suitable insulating sleeve 16. It is'interiorly supported by an open expansible ring17 which is in elec trical contact with the inner turn or end' of-the coil,'and said ring is expanded against the interior of the coil by means of a wedge 18 made of insulating material. Said wedge is formed with edge grooves 18, as best shown in Figs. 5 and 6 which engage the adjacent fend edges of the expansible ring 17.

Said end edges of the ring and the bottoms of the groove are tapered so that when the wedge is driven inwardly between the ends I of the band supporting ring the ring is ex- 'panded outwardly closely against the interior of the'coil.

It will be understood that said inner supporting expansible ring is electrically connected with the inner end or turn o'f=t he coil or winding.

The said high tension coil 15 is supported I and protected at its periphery by a fiat metal band 20, which is formed to almost entirely encircle the coil and is clamped together at its ends to effect a confining pressure on the coil. The side edges .of' said band or plates 20 are folded inwardly over the marginal portions thereof, and preferably inclose reinforcing wires 21, the effect of which rolled overedges is to eliminate corona disinafter be described.

As herein shown, and preferably, the reinforcing wires 21 are made of a single length of wire bent in general U-shaped formation. one end of the plate extend through openings in a terminal block 22 and are riveted thereto at 23. At the other end of the band the transverse member 24 of the U-shaped reinforcing wire extends transversely across the plate and is engaged by aclamping member 25 which is fixed by screws 26 to the terminal block. The said clamping plate is so-arranged as to efiect a clamping pres sure on the bailor closed portion of the reinforcing wires when the said screws 26 are tightened. As herein shown, the clamp? ing plate may assume an angle to the adjacent face of the terminal block 22 before the parts are adjusted, and the clamping screws 26, when screwed home, serves to bring the clamping plate 26 parallel to said adjacent face to eflect the clamping pressure against the closed" or bail-like portion 24; of the reinforcing wire. The said closed portion of the reinforced wire may be insulated from the clamping plate 25, as by an insulating member 27, or the clamping plate itself may be made of insulating material. One of the terminals 28 of the high tension coil or winding is mounted on the block 22 andits connection with the outer end of the high tension coil is through the protecting or encircling band 20.

The inner end of the high tension coil is connected to a terminal 30, shown in Fig. l, which is mounted on the end of a metal arm 31 which extends from the inner portion of the coil outwardly to one side thereof in a direction generally parallel to the axis of the coil, and is attached to the inner expansible supporting ring 17 in any suitable manner. The terminal arm 31 is-extended through the coil to the other side thereof The free ends of the wire at the same. The terminal supports for said winding-are also arranged in an exceedingly simple and. efiicient manner, thereby eliminating high tension cables and high tension insulators at the transformer or other apparatus to which the coil is applied.

It is to be understood that the invention is capable of considerable variation within the spirit and scope of the invention and that the foregoing description of the. details showing one embodiment of the invention is not intended to be limiting, but it is the intent to claim all of inherent novelty shown in the drawings and described in the specification. v

I claim as my invention,-

1. A ring-like winding, an open expansible ring within and supporting the inner turns of said winding, and means acting on said ring to expand it outwardly against the winding. 2. A*ring-like winding, an open expansible ring within and supporting the inner turns of said winding, and provided with oppositely inclined end edgesand a wedge adapted to be driven between said end edges to expand the ring outwardly.

3. A ring-like winding, an open expansible ring within and supporting the inner turns-of said winding, and provided with oppositely inclined end edges and an elongated wedge provided with laterally .and oppositely openinggrooves, the bottoms of which are tapered to engage the inclined endedges of said ring.

4. A ring-like winding, an open fiat coil supporting ring fitting within the winding, and means acting against the ends of said ring to expand the ring outwardly against said winding.

5. A ring-like winding, a terminal conneoted to the outer end of the winding, and a metal terminal bar extending transversely through said winding and electrically connected to the inner end of the winding and provided at one end with a terminal and turns of said winding and electrically connected to the inner turns of the winding, means acting on the ring to expand it out- Wardly against the winding, an outerterminal for said winding and a metal bar extending transversely through and at both ends beyond the winding and attached to. said expansible ring, said bar being provided at one end witha terminal and curved at its other end toward the outer winding terminal to form betweenit and said latter terminal a, safety air gap.

7. A ring-like winding, provided with an inner terminal, an open flat metal protecting ring embracing and clamped on said winding and electrically connected to "the outer end of thewinding and an outer wind- "ing terminal connected to said ring.

8. A ring-like winding provided with an inner terminal, an open flat metal protecting ring embraci and clamped on said winding and electrlcally connected to the outer end of the winding, and an outer winding terminal connected to said ring, said ring being rounded at its edges to prevent corona discharge.

r '9. A ring-like winding rovided with in; inner terminal, anopen at metal protecting ring embracing said winding, reinforcing'wires rolled in the side edges of said inner-terminal, an open fiat metal protecting ring -embracing said winding, a single piece .U-shaped wire bent between its ends,

with the parallel members rolled in the side edges of the ring, a-terminalblock to which the ends of the said wires are attached, and a clamping member'carried by said block to engage over the 'closed portion of said U- shaped wire. v e

11. A ring-like winding, an open fiat metal protecting ring encircling said winding, with means engagingits ends to clamp it tightly against the inclosed winding, the side edges of said ring being curved or "rounded for the purpose set-forth.

' In witness whereof, I claim the foregoing as my invention, I hereunto append my signature at Chicago, Illinois, this 3rd day of January 1919 HEsTER H. THORDARSON.