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Publication numberUS787442 A
Publication typeGrant
Publication dateApr 18, 1905
Filing dateAug 1, 1904
Priority dateAug 1, 1904
Publication numberUS 787442 A, US 787442A, US-A-787442, US787442 A, US787442A
InventorsSamuel B Flynt, Leaman A Maiden
Original AssigneeSamuel B Flynt, Leaman A Maiden
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Insulator for electric wires.
US 787442 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)



witnesses wad/049% UNITED STATES Patented April 18, 1905.




SPECIFICATION forming part Of Letters Patent No. 787,442, dated April 18, 1905. Application filed August 1, 1904. Serial No. 219,564.

' To all whom it may concern:.

Be it known that we, SAMUEL B. FLYNT and LEAMAN A. MAIDEN, citizens of the United States, residing. at Meridian, in the county of Lauderdale and State of Mississippi, have in-.

' cause of its cheapness, non-conducting qualities, and resistance to the elements. This class of lnsulators suffers most from thought less or mischievous parties using the same as targets. The purpose of this invention is to enable the use of insulators of glass or vitreous material and to protect the same against injury. In accordance with this invention the insulator of glass or vitreous material is incased by-a protector, preferably of metal, and the invention relates more particularly to the adjunctive means combined with the rotective casing, as will appear more fully iiereinafter, and outlined in the subjoined claim.

In the accom anying drawings, formin a part of the speci cation, Figure 1 is a side e evation of an insulator embodying the inven tion. Fig. 2 is a vertical section of the insulator on the line 90 a: of Fig. 1. Fig. 3 is a detail View of a portion of the protective casing, showing the securing means between the sections. Fig. 4 is a detail perspective view of the insulator, the parts being separated and arranged in a group.

Corresponding and like parts are referred to in the followin description and indicated in all the views 0 the drawings by the same reference characters.

The insulator proper is indicated at 1 and may be of usual construction and formation and is composed of glass, porcelain, or other vitreous material.

The protective casing, which incloses the insulator 1, is composed of similar sections 2 and 3, preferably of metal, although within the purview of the invention any material that will resist hard usage and the elements may be successfully employed. A groove 4 is provided near the upper end of the protective casing and results in the formation of an inner rib which corresponds to the accustomed groove 5 in the outer side of the insulator 1. This rib and groove form interlocking means between the insulator and its protective casing and prevent displacement thereof after the casing has been pro erly placed in position and fastened. A siiight space exists between the insulator and casing to prevent undue pressure coming upon the insulator at any one point. Gaskets 6, of rubber or other packing material, are interposed between the insulator and its casing and serve as noise-deadeners by absorbing vibration and to-prevent breakage of the insulator in the event of the casing being struck a smart blow by means of a missile or other object.

Any suitable means may be employed for securlng the sections 2 and 3 after beinglaced about the insulator 1. The means illustrated are preferred, and consist of aflexible strip 7 at each side of a section and a pair of lugs 8 at the sides of the other section to receive the strips 7 between them, the projecting ends of said strips being bent either up or down against one or the other of the lu s, as illustrated, to prevent separation of t e sections. The flexible strips 7 are attached to the section provided With them in anysuitable manner, and, as shown,lugs 9 are formed on the section, and the strips are molded in or otherwise attached to said lugs. When placing the sections 2 and 3 about an insulator, the outer ends of the flexible strips 7 ass between lugs 8, and after the sections ave been pressed together the ends of the stri s 7 are bent, so as to retain the sections in p ace.

An insulator constructed substantially as herein setforth may be used in the accus- ICC the line-Wire it) being secured thereto by means of the binder ii. The binder, in conjunction with the linewire, sets in the further capacity of securing the sections 2 and 3, so as to prevent bllBlI' separation. 'lhe protector being wholly exterior to the insulator of flexible materiel receives any shock or blow delivered thereon, thereby preventing injury to the insulator, and the packing 6, intervening between the insulator and protector, compensates for shock and vibration and materially decreases the chance of injuz'v to the insulator 1 in the event of the protector sustaining a smart blow from any source or object.

Hsving thus described the invention, what is claimed as new is- As it new article of manufacture, s protective casing for insulators comprising similar sections grooved externslly to receive it binder, oppositeiy-errsnged pairs of lugs upon one section, ssingle lug at opposite sides of the other section, the several lugs shove mentioned being arranged adjacent to the joint of contiguous sections, and as flexible strip extending from the single lugs 01' the last-mentioned section and adopted to pass between the pairs of lugs of the first-mentioned section to be bent about one of each of said pairs of lugs.

In testimony whereof We affix our signstures in presence of two Witnesses.


Witnesses "H. E. l doN'reoMERY,

H. Seances.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4665279 *Mar 31, 1986May 12, 1987Mpx Systems, Inc.Protective container for transmission cable splice
US8889993Jun 27, 2012Nov 18, 2014Gregory E. MisevichSpool insulator system
Cooperative ClassificationH01B17/00