US927187A

US927187A - Insulator.

Info

Publication number: US927187A
Application number: US39308807A
Authority: US
Inventors: Louis Steinberger
Original assignee: Individual
Current assignee: Individual
Priority date: 1907-09-16
Filing date: 1907-09-16
Publication date: 1909-07-06
Anticipated expiration: 1926-07-06

Description

' L. STEIN-BERGER.

INSULATOR.

APPLIOATION FILED sBPT.16,1907.

Patented July 6, 1909.

fifa/wey@ i 'onrrnn sTArr-ns LOUIS STElNBERGER, F NEW YORK, N.

rNsULAToR.

no. s273187,

To fill ilrliom it may concern."

lle it known that l, l'ioirs S'rnmnuaesn,

u rit izeu oi' the United itates, and a resident ol' the city oi'v Kew Yorin borough ol' Brooklyn, in the reunir of Kings and Str-.ie ot New York, here invented new and improved lnsuiator. oi' which [the iollowii'rt is o, full, clear, and exact description. v My invention relates to in'siployed in general electrical work' and .more pa rti'cularlyior service in high tci'ision work, and in instances where the insulator is subjected to `great .mechanical strain and high voltage.

Arnone, the several objects oi' my invention are theiollcwing: l, to encircle the .metallic tension 'members with sevcralconcentric tubular members oi insulating material, thereby increasing the dielectric properties of the insulator; 1l, to insulate certain internal parts oi' the structure with insulating material lia-vingV proporties adapting; it to resist mechanical stresses, and to cover the outer portions of the device with insulating material rendering it iireprcoi, waterproof, and otherwise suitable for out-door oztposure. Ill', toinereuse the mocluinieel strength ot the insulator by providing it with disks having bridges' integral rewitl'i and having shapes zuidrclative positulns giving" exeepl tion-al advent; regards mechanical ses; IV, to enable the insulator to be esseinbl :d without the necessity for disconneeting the tension member. from anyl k which may engage them; to prmf'ulecertain parts of the insole-tingr n'iaterial with tubular portions integral therewith. and eX- tending alongw the tension members for the purpose oi protecting vpoints beyond the bounds of the particular body of insulating material with whichA they are integrally connected; Vl, to provide the tension members with fastenings of an improved .kind which vmay be placed iu'position after the tension members are placed approximately in posi- -ition 5 VII, to sink the fastening members last mentioned into the body portions of the device for the purpose/of more readily holding` the fasteningl members in positionrVlIl, to Agive the exterior of the insulator such conformity totend more eiiectively to prevent arc'ing,Y and surface leakage, and also to adept the device for supporting. wiresin various relations iX, -to provide tensionmemberswith` fastening `members oit-such conformityas to enable one to'attach or remove Specification of Letters Patent.

Application filed September i6, 1907. Seriell. No. 393,088.

Patented July s, '1909.

them at will X,to provide tension disks havingr portions raised relatively to the surface upon which fastenings rest, so as to retain the fastenings more securely iu place when the device is put under stress. XI, to

provide a disk insulator of such construction that it may be connected to other insulators either rigidly or ilexiblyl Reference is to be had to the accompanying drawings forming a partof this specificolion, in which similar cl'iaracters oi reference indicate corresponding parts in all thefigures. Figure 1-` is 'a vertical, central section through an. insulator made in accordance with my invention and showing the relative positions of the inner body of insulating materiel and the outer body of insulating material, the Vinner body of insulating material having' tubular portions extending` through it, this view also showing how the tension members are connected with. the -metallic disks and with the insulating material of the insulator; Fig. 2 is a vertical cross section taken upon the line 2-2 of Fig; 1 and sliowing more particularly the' arrangement of the `tension members and the insulating members; Fig. 3 is a vertical section somewhat similarto Fig. 1 but showing the outercovering of insulatingY .material us omitted, thedevice in this figure being capable of use, .if desired, without the addition ofthe outer mem bei of insulating material shown in Fig. 1; Fig'. l is a perspective of one of ajpair ofnietallic` disks, for receiving the mechanical stressdue tothel pull upon the device when in use, this 'viewshowingT the various apertures necesselry for connecting the variousparts properly in position; Figi.` 5 is e fragmentary perspective somewhat' similar to the topv of Fig.V 4 and showingl in addition a portion oi' one of the tension meinbers,'and the fastening member for preventing` the withdrawal oi the tension member from the disk upon which it' exerts mechanical stress.

A pair vof metallic disksl are each provided with two circular' apertures 7 ofconsidereblesize and \vith",two smaller vapertures l8 1 `alsol circular, the disk being further provided `with annular shoulders .9 disposed adjacent to the aperturesS.l In eHect, the eperturesS are holes provided with countersinks into which they merge. .'Eaeh disk 6 is provided with a bridge 71 integral therewith, this f bridge simply representing the portion of material remaining between the epertures 7. Each disk 6 is further provided with thm portions 1() reiiresenting the material'lefti'be-A This bolt 13 extends through the lugs 12 and is provided with a head 14 and with a revoluble nut 15 whereby it may be connected to the wire, v.cable or analogous member to be used as a support for theinsulator.

tension member 11/ is provided withA two prongs 16, each having va head 17 integral therewith and' produced thereupon by upsetyting the' ends of the prongs. `l/Vashers 18 each having a slot 19, are made of a size enablingthem to be fitted against the sliouldeis 9 (see F ig. 5). The slot 19 of each Washer 18 is preferably of such width that tlievwaslier must be driven forcibly upon the prong 16 in '20 order to gripittightly.

.v At 20, 20 are two disks of insulating material each flattened upon one side, these disks f being of a kind ad apted to 'resist compression stresses. When the disks 20, 20a are `fitted together (sec Fig. 8) they constitute, to all intents and purposes, a single disk provided vwith a comparatively wide and thin edge.

Thentheparts are assembled, as. hereinafter described, yand as indica-ted in Fig. 3, lthey comprise practically a composite body of insulatingA material provided with holes 21 extending entirely through it, and further provided with tubular extensions 22 and withY webs 23', these webs, one at each end of'tlie insulator, crossing each other. A-socket 24 is mounted integrally upon a tension ineinber 25, the llatter being divided into. two prongs 1G*L exactly like theprongs 16.v The y socket 24 is provided with a hole 26 'extending diainetrically througli-it and is provided internally with a thread 27 for the purpose of engaging a threaded vbolt, or 'other member, in'A order to enable one end of the insulator to be `suspended or otherwisel sustained, or convnected with .any other member.

' -In order to' assemble the lparts shown in Fig. 3, the

disks

20 and 20, of insulating inaterial, are fitted respectively with the two metal-disks the latter being so disposed that the-walls 18 f one-of them are' substantially in registry with the aperture 7 of the other. tend crosswi'se of eachother. The prongs of the tension nembersare next inserted, the

heads 17 being passed through the'holes 21,

- 8 and the washers 18 being driven laterally uponthe prongs. The device is now ready for use if no further insulation than that' infA dicatedin Fig. 3 Ais required. Itis desirable,

however, 'to providel further' insulation and also' to `prevent the entrancel of water into the parts shown in Fig. 3. In such event, 'I add a body 28. of insulating material, shaping ,it so as to form disks 29, and further provide it with ends 30 andwith annularccrruwith and connected together bya bolt 13.`

The

In this manner the apertures 7EL ex` gat-ions 31, 32.' The disks 29 are separated from each other by. an annular: groove'-33 which may be used to advantage in receiving a wire 33a. -Tlie corrugations {Mp3-2,' are separated by grooves 34, 35. The grooves 34, 35 may also be used to receive one or more wires. '.lhe corrugations 31, 32, and the disks 29 facilitate the dripping of mois ture and also avoid the tendency for the cuirent to leak. It for any reason it may be neces-sary to let the insulator down to the` ground it has a tendency to remain upon the edges of the disks 29 and thus to avoid the necessity. for the-wires, cables orv guys coming into contactwith the earth.

The outerinember 28 of insulating material is preferably added after the other parts of the device are assembled, as shown in Fig. 3, and may be applied by forcing the insulating materialfwhile in a plastic condition, into and around the parts shown in'Fig. 3. The material of the outer insulating body is forced into the holes 21 and J8 so as to constitute tubular members extending pracf tically throughout the entire length oil the inner body of'insulating material, including the tubular extensions 22 of the saine. By this means each prong 16 is encircled by a sleeve 21 of insulating material having one dielectric constant. These sleeves being encircled by a single body of insulating matciial having a diil'erent dielectric constant, and this "body being enveloped vin a mass ot' insulating material having the samedielec- 4 tric -constant as the sleeve 21, as will be un- 100 derstood from Fig. 2.4 The ends 30 of the outer bodyof insulating materialinay be about at ilush with` the inner edge of the socket 24 at one end of the strain and. may be caused to envelop a considerable part ot' 105 the tension member 11 at points extending considerably outward from the center of the f insulator.

It will be noted from. the above description that I have ijiroduced an insulator vaffording considerable mechanical strength in proportion to the sizes and quantities of material used', and also affording high dielectric qualities. Theeliiciency' of the insulator may be increased by' building one part of itwith a 115 View to standing great mechanical stresses .coupled with` considerable dielectric strains,

and vyet constructing another portion of the insulator of insulation adapted to render the construction waterproof and fireproot. Any number o f these insulators may be connectedtogether or connected to insulators of different`form-inseriesso as te increase the aggregate insulation. The insulators may bear- .ranged with' their axes either horizontal or 125 vertical.

' I do not-limit myself to the exact form, nor tothe details of any or all of the parts above shown and described, nor do I limit myself to any particular combination of the parts,

nor to the use of any prescribed materials, but prefer to use for the outer body portion shown in Fig. l the material well known in this art as "electrose", For the inner insulating portion shown in `Fig. 3 .l may employ either electrose ol' a more distinctive waterproof and lireprool' material, or any other suitable material.

It will he evident to those skilled .in the art that many changes in the construction, form and arrangement of the parts may be. resorted to without (.lepai'ting l'rom the spirit or scope ol' my invention.

Having t-hus described my invention, l claim as new and desire to secure .by bett-ers Patent i Y 1. An insulator, comprising a plurality of disks of insulating material provided with holes', tension members provided with prongs for extending through said holes, and l'urtlier provided with 4heads,'and fastening members for. engaging said pi'oiigs and thus pi'cventing the retrogression of said heads tln'ough said holes.

2. An insulator, comprising a plurality of metallic disks, a body of insulating material engaging said disks and preventing electrical communication therebetween, said body of insulating material being provided with holes, tension members extending through said holes and provided with heads, and washers provided with slots and disposed adjacent to said heads for preventing` retiogression of the latter through said holes.

3. An insulator, comprising a' body, ten sion members of conducting material, and an outer covering of insulating material providedV with a body portion having annular corrugations encircling it, and also having disks integral ,with it, said disks being disposed in close. proximity to each other'aud Vmerging together at one point.

4. An insulator, comprising a body 4por- Vtion olinsulating material provided with holes, tension members provided with prongs extending through 'said holes, and further provided with enlarged portions upon the -ends of said prongs, said enlarged portions being of such size as to enable them to pass through said holes, and fastening members for preventing the retrogression of said. heads through said holes.

5. An insulator, comprising a body poi'- tion of insulating material provided with tubular extensions of insulating material projecting outwardlyT from the'ends of said bpdy portion, said body portion being further provided with webs connecting together certain o f said tubular extensions, and tension meinbers extending entirely through said body portion of insulating material and through said tubular extensions, said tension inembers being further provided with means for preventing theirwithdrawal from said body portion.

6, An insulatoi', comprising a pair olt disks of insulating material, each provided with tubular'extensions mounted l'.lier;,upon and rigid relatively thereto, the tubular.extew sions of one-disk being staggered relativelj.' to those of' another, and a pluralityfof metallic members [-)rovided with portions exteiid.

vmaterial extending integrally iiito said holes and disposed intermediate said metallic members and said disks. y

S. An insulator, comprising a body of insulating material provided with tubular extensions integral therewith, and further provided with holes extending through said body. and through said tubular extensions, tension members exteiuling through said holes and tubular extensions, and means for preventing the withdrawal ol2 said tension members from said body ol insulating material.

9. in insulator, comprising a plural'ty ol" disks of metal each provided with. apertures and with a bridge bounding said apertures, the bridge of one disk being disposed across the bridge of another disk, each disk being provided. with holes disposed adjacent to the ends of the bridge of that disk, a body ol' in sulating material disposed intermediate sai-l disks, and tension members extending tliroi A said holes in said disks of metal and through said body of insulating material.

10. An insulator, comprising a mainv body of insulating material provided with a disk and with extensions integral therewith, and further provided wit'ii holes extending through. said main body and con tinnod through said extensions, tension nifnnbers following said holes and thus extending through said main body ol' insulating maie-v i including a lio-dy o1e insulating material eX- tending outwardly and formed into a oompaiatively large disk.

13. An insulator, comprising a body of in sulating-material provided with ay plurality of disks comparatively large in diameter merging .together and made integrale-'ith said body of insulating material, and strain members connected with said body ylnortion.'

` 14. Aninsuletor, Comprising' a urality of disks of insulating material, 'said disks beng of comparatively large diameter and disposedclosely together for thepurpose ol en-` gagmg opposite portions ot a conductor d1s` tension members 'with said disks for the purpose of supporting the latter.

16. An insulator, comprising a plurality'.

of disks each made of insulating material and provided with holes, said holes being spaced a little distance from the outer edges of' the disk so as toleave a portion ofinsulating material intermediate said holesV and one edge of' said disk at the p ointsthereof nearest to said edges,and tension members extending through said holesand insulated from eaoli other.

In testimony whereof I have signed my nameto this specification in the presence of two subscribing witnesses.

LOUIS STEINBERGER.

Witnesses z WALTON HARRISON, EVERAR'D lB. MARSHALL.