US1799977A - Distributor ring - Google Patents

Description

April 7, 1931- c. LE G.I FORTESCUE 1,799,977

' DISTRI'BUTOR RING Filed Aug. 7, 1 25 l WITNESSES: INVENTOR & 67274. 5 le'fZr/esaoe.

W BY

- 7 ATTORNE.

Patented Apr. 7, 1931 UNITED STATES III G. IOBTESOUE, OI PITTSBURGH, PENNSYLVANIA, ASSIGNOB TO WmTING- HOUSE mc'rmc & IAN'UI'ACTUBING COMPANY, A CORPORATION 01' PENNSYL- VANIA.

DISTRIBUTOR RING Application filed August 7, 1926. Serial No. 127,878.

My invention relates to distributor rin and particularly to rings for distributing t e electrostatic fields about high-voltage insulators.

The object of my invention is to provide a rin of the above-indicated character, that sh 1 permit its easy and economical manufacture from a material of standard form; that shallbe readily assembled and mounted in operative position and that shall be simple,

durable and efiective in its operation.

In high-voltage-insulator practice, it is usual to provide a conducting ring, of one character or another, about the axis of an insulator adjacent to one end thereof to assume fiashover arcs and to keep damaging stresses away from the insulating parts.

However, as simple as they may appear, these rings are usually of ditficult and expensive manufacture, it being difficult to avoid troublesome operations, such as pipe bending, joint forming and other operations,

such as die pressing, which calls for the use of expensive dies.

Certain of these rings have other troublesome features, such as the 'oints between the rings proper and the radial arms for supporting them. It is my aim to overcome certain of the objectionable features of distributor rings of the prior art by providing a ring which may be simply and easily made from standard material, such as strap metal, and which shall be uniform and symmetrical in form, economical in manufacture, simple and durable in construction and effective in operation.

Figure 1 of the accompanying drawings is a top plan view of a suspension-insulator unit equipped with a distributor ring of my invention, and

Fig. 2 is a side elevational view of the same.

The device comprises, in general, a highvoltage suspension-insulator unit 1, a suspension clamp 2 for attachment to the in sulator unit 1 and for supporting a conductor 3, and a conducting-ring structure 4 of my invention for directing and distributo the electrostatic field of the insulator umt 1. a

The insulator unit 1 is of the usual and well-known cap-and-pin type and, in this instance, is represented as the bottom unit. of a string of similar units for attachment to a supporting tower or structure (not shown).

T e suspension clamp 2 is also of a usual form, except that it embodies receiving portions 6 for the ring 4 and comprises a channel portion 7 for the conductor 3, a clamp-- ing member 8, bolts 9 for holding the clamp ing member 8 in position and a bridge portion 10 on which the receiving portions 6 and an apertured boss or clevis 11 are disposed. A bolt 12 extends through the clevis 1l-and an eye in the insulator pin (not shown).

The ring 4 comprises, in this instance, duplicate half portions, each constructed of uniform strap-like material having a sector or partial closed-loop-like portion 14 and integral inwardly projecting ends 15 that also project downwardly or out of the plane of the ring. The adjacent corresponding ends or arms 15 of the respective half portions of the ring 4 may be spot welded, riveted or otherwise secured to ether between the receiving portions 6 and the outer perimeter of the ring and are, preferably, spaced apart and apertured at the extreme inner ends thereof for the reception of bolts 16 and the receiving portions 6 of the clamp 2.

By the above construction, in which specified lengths of strap metal material may be cut from elements thereof and formed into the half rings by simple bending operations, a'ring is provided that is not only extremely economical to manufacture but is symmetrical and uniform in shape, simple and durable in construction and effective in operation.

While I have shown and described a particular form of my invention, changes may be effected therein without departing from the spirit and scope thereof, as set forth in the appended claim.

v I claim as my invention:

An electrostatic field distributor comprising a plurality of members each of substantially uniform cross-sectional area throughout having a partial-closed-loop-like field distributing portion and integlral bent supporting portions continuing om, and ex-

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