US1048992A - Insulator. - Google Patents

Description

G. A. MEAD.

INSULATOR.

APPLICATION FILED JULY 29, 1908.

1,048,992, I Patented Dec. 31, l9i2.

2 SHEETS-SHEET 1.

G. A. MEAD.

INSULATOB.

nrmouml rILnn JULY as, 1908.

1,048,992, Patented Dec.31,1912

2 BHBETSSHEBT 2.

I QZE Q/ZW: 2% a I M 6 m4- UNITED srrnrpsrarnu'r carton GEORGE A. MEAD, 01F MANSFIELD, OHIO, ASSIGNQR TO THE OHIO BRASS COMPANYT OF MANSFIELD, OHIO, A CORPORATION OF NEW JERSEY.

INSULATOR.

' Specification of Letters Patent.' Patented Dec. '31, 1912. I

Application filed July 29, 1908. Serial no. 445,858.

To all whom it may concern:

Be it known that I, GEORGE A. MEAD, a citizen of the United States, residing at Mansfield, in the county of Richland and State of Ohio, have invented certain new and useful Improvements in Insulators, of which the following is a specification.

This invention relates to improvements in insulators and more particularly'to strain insulators, and the primary object of the invention is to provide an improvedinsulator of this character for insulatinga con ductor carrying high voltage from the ground or other conductors.

A further object is to provide an improved, compact insulator of this character for attaining the maximum resistance to mechanical strain and of suflicient dielectric strength to withstand the high voltage.

A further object is to provide improved means for shedding the water and which means also serves to increase the leakage distance between the span wires.

A further object is to provide an improved insulator of this character which will be simple, durable and cheap in construction, readily installed and effective and efficient in operation.

To the attainment of these ends and the accomplishment of other new and useful objects, as will appear, the invention consists in the features of novelty, in the construction and arrangement of the several parts hereinafter more fully described and claimed and shown in the accompanying drawings, illustrating an embodiment of the invention, and in which Figure 1 is an elevation of a span wire and the supports therefor having 'af'pair of insulators applied thereto, constructed in accordance with the principles of this invention. Fig. 2 is an enlarged detail sectional view on line of Fig. 3. Fig. 3 is an elevation of one of the faces of this improved insulator. Fig. 1 is a detail sectional View on line l-l of F ig. 3. Fig. 5 is a view similar to Fig. 3, of a modified form of the invention. sectional view on line -6 of Fig. 5. Fig. 7 is a detail sectional view on line 77 of Fig. 5.

Fig. 6 is a detail.

Referring more particularly to the drawings, and in the exemplification of the invention shown in Figs. 1 to 4, the numeral 10 designates generally the insulator, which may be constructed of any suitable insulat ing material, such as porcelain or the like,

and may be of any desired form, but is pref-' eraloly circular or disk-like in configuration. Passing through the body of the insul'ator adjacent one of the faces and in a plane substantially parallel therewith is an aperture 11, and the diametrically opposite portions ofthe body of the insulator adjacent the ends of the aperture-.11 are reduced to form enlarged openings 12 ad-.

jacent the periphery of the insulator, which ,openings form continuations of and have jacent the periphery of the insulator, which openings communicate with and form con tinuations of the aperture 13, to form an un I obstructed and straight passage therethrough for the span wires, and the extremiinsulator which may be quickly installed.

The cnlargedopenings 12, let, or the reduced portions of the body of the insulator adjacent the periphery thereof, serve to form a narrow, irregular or .undulatmw periphery 15 on the body of the insulator, so that the entire edge of the insulator will not stand within the same plane. 1

With this constructionthe web thus pro- 5 duced will form a guard which extends entirely around the body from/a lane at the outer side of the axis of one pa to the outer or farthersid'e of the axis the other passage and at both ends. In l the insulator is preferably supported 1-. edge, and one end of oneof the repair .nres 16 is 11 and 13 are spaced from each other and l are arranged on opposite sides of an imaginary -center line drawn between and sub stantially parallel with tlfe faces of the disk, and being disposed transversely with respect to each other, will cause the extremi- 30, ties of the span wires to be looped one within the other When the latter are secured to the insulator, so that a portion of the insulator will stand between the loops, which portion will be under compression. With insulators of this type, the body portion is first shaped of soft material and while still soft the apertures for the span wires are formed therein by means of any suitable tool or in- I strument. In the manufacture, considerable difiiculty is'. experiencedwhere the apertures are curved with respect to the'plane of the face of the insulatora-to properly guide the instruInei t. through the body portion to form or position the apertures with respect to ,each other to produce a wallbetween the apertures vwhichwill be thick enough to hold the wire su'lliciently spaced to prevent arc ing and at the same time form the apertures a sullieient distance from the respective face of the insulator, owing to the fact that the v manufacturer is obliged to guess at the position and direction of the curved apertures/as he is unable to see or follow the active portion of the instrument through the body. Furthermore, the wall between the apertures frequently becomes disintegrated, owing to the fact that it not of sutlicient thickness, which not only permits the ivater to form an electrical connection between the wires, but the wvall will crumble or break down under the strain-of the wires. \Vith this improved form of nisulator and by pro viding apertures which pass straight through the body substantially parallel with 4 of sufficient thickness between the apertures,

thereby producing a wall of uniform thickness 1n all of the lnsulators. Furthermore, by arranging the apertures stralght through the insulator, the latter may be casilyinstalled by reason'o'f the fact that the ends of the span wires will pass readily through the apertures, without necessitating the forcing of the wires through curved or irregular apertures. i

. 111 the eire'mplification of the invention shown in Figs. 5 to 7, the body portion 10 of the insulator is provided with flanges 18, 19, which project from the peripheral e'dge 15 of the body portion 'at angles to the faces of the insulator. These flanges diverge from each other to form a water shed, and each flange projects beyond the plane of one of the faces of the insulator. These flanges also extend around the entire body portion and serve as'mcans for increasing the leakage distance between the span wires. A .ll' ith this improved form of insulator. it

will be apparel t that there is produced a compact insulator constructed for attaining the maximum resistance to mechanical strain, and one 111 which the electrical' strength of the insulator may be increased by increasing the diameter of the insulator and also the diameter of the flanges, and by n'oviding an irregular edge or periphery to the insulator the leakage distance between the span wires is greatly increased.

In order that the invention might be fully understood, the details of the foregoing einbodiment thereof have been thus described,

I bu t lVhatI claim as new is: 1. in insulator having means for connecting conductors to opposite sides thereof and embodying substantially straight passages, both ends of the respective passages opening through thcsanie face of the insulator. said passages being dis ms'ed in close proximity and transversely with respect to each other so asto intersect; with a portion of the insulator betvnmn the passages. the extremities of the passages terminating short of the pe-v 1 riphery of the body of the insulator, the pcriplwryof the body of the insulator being shaped to form an until-cling open groove 2. An insulator having means for connect iug conductors to opposite sides thereof and embodying substantially straight passages,

both ends of the respective passages opening through the same face of the insulator said passages being disposed in close prox mity and. transversely with respect-to eacn other so as to intersect, with a portion of thejinsulator between the passages, the extremities of the passages terminating short of the-periphery of the body of the insulator, the periphery of the body of the insulator being shaped to' form an encircling open groove, the sides of which groove are deflected laterally to project beyond the respective faces of the insulator.

' Witnesses:

In testirnony whereo fllhaye' signefi 10, name to this speeificatiomi'n-the presence of two subscribing Witnesses, on this 23d day or July, A. D. 1 908'.*' j i I GEORGEA J MEADL- CHAS, SEEM, J. H..Jo0iiUM, Jr, y

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, -WashingtomDtG.

Images