US888674A - Connecting-conductor for cables. - Google Patents

Description

PATENTED MAY ze., 190s.

F. s. VIEL. CCNNBCTINC CONDUCTOR PCR CABLES.

APPLICATION FILED AUG.15,1902. BENEWED MAB. 29, 1906.

' certain'l improvements in joints or splices for UNITED, STATES 'PATENT OFFICE.

FRANoIs 4s. VIL', 'oF PITTSBURG, PENNsYLvANiA, AssIGNoR 'rol-STANDARDUNDR-- Y GROUND CABLE COMPANY, oF- PITTSBURQPENNSYLvANIA, @CORPORATION -Appliation med Au'gistfis, 1902,' 'serial No. 119,194.1.'

' 5 of the Unite-d States, have invented'or .cliscovered certain new andv useful Im rovements in Connecting-Conductors' for ,ables,

of Which improvements the following is a specication-. f

The invention described'hereinfr'elates to eleutztricA cablesl carrying high voltage cur-- "rents: It has heretofore been the practice in 'making such splices or' joints to remove j` A1 '5 the insulation from the sides of .theconductors tolle` connected, a suitable"distance,l and then form an electric joint vor, union between theseconductors in suitable'manner. Insulation in, .the form of'paper, or librous tape was then, applied by. hand to theportions of v conductors, from which' the insulation was removed. It is a matter of considerable.

difficulty" to determine `When` a suflicient amount ofy tape has been applied to renderthe joint as strong electrically as' the original` insulation. .As considerable care and labor are required in applying th'e tape, the Workman isvery liable to shirk it 'and leave the jointl imperfect." And further lit yis practi.

cally yimpossiblefto so apply the tape' as'toforma comp-act uniform thickness of. insulation. The Vforegoing diliiculties in applying and incident tothe use of 'tapes in forming l the insulation. ofl joints are especially premi- 3 5 nent when connecting the conductors ofdu-v .p1eX` and,triple cable, as With such cable ,the

conductorcannot be A separated to' any considerable extent and the tape lhas to' be threaded between the conductors. 40

insulating covering for the exposed ends' of vconnected conductors of -a uniform; thick-- ness and electrical strength which shallbe at 4'5 least equal to that ofthe original insulation.

' ,"The Invention is hereinafter more fully detional elevation jshfovving my` improvement 'as employed in connecting the conductors vof a triple cable, 'and Fig. 2. is a transverse section of the same on aplane indicatedby the lille n n Fig.l 1.

\\ Specication of-Letters Patent.4

Theobjecto-f the present' invention is-to-` .providedfor easy and quick formationfen coNNEcTING-,CONDUCTQR Fon eABLE's.-

Renewed umh 29, `1901s. serial N9. 2152,6"15,

` In the practice of my invention, the sheath 55 1 vand covering?, of. the cable is removed, a suflicient distance andtheinsulation 3` ofthe l conductors 4 is also removed, asiis customu ary. Sleeves `5 are then,' slipped `over one -of\the ends of theconductors and pushed back farfenough to permit of the ends of..the conductors 4 being electrically connected." This connection may be formed in` any suitable-manner, as for example, 'bym'ea'ns of a metallic sleeve 6, solderedfor sveated'onto theends of the conductor projecting into the sleeve, as shown. vAs theinternal diameterl 'of the" sleeves 5 is made sufficiently large to there will be considerable tspace bet fveen the sleeve the conductor When the sleeve is arranged over the joint, hence iii-order to holdl the sleeve steady and form an internal Support therefor; paper or-iili'nis tape/x7` impregnated .With insulating Wax is Wrapped a fewv times around the 'sleeve Gandthe' le'xposed 'portions 'of theconduct'or, and plastic' .insulatingmaterialapplied ,to the tapebe-` fore the Lsleev'e gvqhich is madesu'lioiently long to Overlap the insulation` 3 Aon'bothsides of the point'- of union ofthe conductors," is

fslipped into position. The use ofthe tape and plastic 'insulating materialv 'isfnot neces?- sary for insulating' purposes,- bt it --is plie-l ferred `to employ Vthem .both -as a centering 8,5

support o f the sleeve andalso as a filling preventing air'spaces Withinjthe sleeve-.1

After all the conductors havebeen' con-l nected and insulated,I as described, the paper sleeves onthe several conductors 'areipie'ssedV t'tlget'her and al'argef a er sleeve 8, Which" was slipped over one o -t e cables before any yoi? the conductorsWere united'pis slipped-'into'. position overthesleeves', as shown', and serves to Ahold allthe parts of the cable. ThisV 'binding sleeve not necessary but is highly d'esirableasstrengthening the joint. -Alis customary, Va sheathing 4sleeve 9\is plI ced. around the joint" and connected'to the sheath 1 of the.eable',-f agnl Aliquid insu latin material, refei'ably' is poured finto Ythis s eeve until al air is forced 4out and the* sleeve completely -illed.

The sleeves-5in addition'to-forming Tan linsulatingcovering for thejoint, serve to hold `the several .conductors apart and-'aird 'spaces for tlieQin'sulating. material-Which v.,pourecl intothe j'ointas 'described'.` 'In other i from position, the e `for the reason that suc no,Ii-conducting" words `therigidl sleeves 5 serve as's acing pieces to prevent contactbetweenf a jacent conductors, and henceif for anyreasonthe Vsleeve did'not extend frominsulationto insulation, as for exam le, if it should slip fgciency'ofV the 1 joint would not be affected as thesleevefwould" revent'contact between conductors and the insulating material with which the joint 'is iilled would afford sufficient insulation I am aware that thin lightsleeves formed einen-conducting niaterlal, such as paper `or indurated fibenhave been-employedior insulating the joints of conductors carrying light currents for telegraphic `and telephonie purposes. `l 'lhese'sleeves are ap' lied to cenductors having their insulation ormedoi" an 'air containing material, and are so con# i structed and arrangedaround ythejoint as to .to overcome these difficulties, the 'sleeve is lformed so that its electrical strength is at least equa-Ito that" of the insulation on the' conductors, and is made hard and rigid, so as to `provide and maintain such position `relative to the oint that the non-conducting filling ap lied as V`described between the' sleeve and` conductor, will have a uniform thickness. This sleeveis referably formed Y of an absorbent materi as paper, and boiled in insulating materialfso as to be thor- `45 oughly impregnated therewith and ,thereby rendered" as nearly as possible absolutelyin' combination rigid j Y I claim herein as my invention:

. As a means for'insulating jolnts 1n' con ,ductors for hlghvoltage currents, a-rigidy integral sleeve of non-conducting 'material surrounding ductors an forming the bridge or connecnecting conductors, and having the s ace the splice between the com y ition between the insulations on fthe .con-fl between -L the' vconductors u andv sleevev lled Witli-'noncondlucting material, substantially as set forth.

2. A'joint forcables having la plurality .ci

conductors `for high voltage currents, having in combination rigid sleeves ofnon-cond'u'ctf v lng materlaland overlapping the or1 xnalv 'l .insulation o n the connected sections o the,-

conductors, asimilar sleeve surrounding the other sleeves, a sheathing-sleeve and non# conducting material'i'lling 'all the spaces `Within the sheathing sleeve, substantially as set forth. l

3; A joint for cables having a plurality of conductors for high voltage currents, having aper sleeves impregnated.`with non-con ucting` material and j overlapping the original insulation on the the conductors, a s1-1'n connected sections o? llarsleeve surrounding the `other, sleeves, a sheatlun sleevey and non-conducting material {illingal 'the spaces Within the sheathing f sleeve, substantially as set forth. v

4. A joint for cables having a'plurality-of conductors 'for high voltage currentshaving in combination rigid sleeves oi. non-conductconductors,fa. similar sleeve surrounding the `other sleevesa sheathing sleeve and nonconducting finaterial filling all the spaces withinthe sheathing sleeve, substantially `as set forth.

In testimony whereof,- rmy hand. t

FRANois s. viaria Witnesses: I l i' N lng material Surrounding the' splines. in the l have` hereunto set'

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