US1824850A - Cable connecter - Google Patents

Description

Sept. 29, 1931. w. R. WARD i gfifi CABLE CONNECTER Filed April 11, 1929 INVENTOR M70407 J? i l am.

, ATTORNEY Patented Sept. 29, 1931 WILLIAM R. W ARD, 0F SHARON, PENNSYLVANIA, ASSIGNOR TO WESTINGHOUSE,EDEC- 'TBIC E .WUFACTUBING COMPANY,

A CORPORATION OF PENNSYLVANIA CKB'DE C(XNNECTER application and kp'fll -11,

My invention arelates to electric conductors and particularly :to lmenrns for :preventing capillary action and rth'e resulting siphoning of oil =.alorrg said .conduotors.

:, a It ziscommon practice a operate electriical apparatus .of certain :types such, Tier example, transformers, 'iimmersed in oil which acts .as :an insulating .nnd cooling amedium. When conductors for connecting 210 "transformer windings. with outside circuits are :provided with insulating: coverings and the -.coverings extend below the oil level, the ail tends ito travel :along said :conductors through the insulating covering by :ca-

" =15 pillary action. Iifstnanded cables are used, the oil also tends to travel along the con duct-or through the interstices between the strands of wire.

This action is undesirable, especially when 1430 the conductor leading from the casing is bent and extends downwardly below the level of the oil, since when oil, travelling along the cable, reaches a point below the level of the oil within the casing, a siphoning action occurs which, when once started, be-

comes continuous. This action results in loss of oil and necessitates frequent attention to replace it, thus increasing the expense of operation of the apparatus. The outside of the casing also becomes oily, collects dirt and presents an unsightly appearance.

An object of my invention is to provide anti-siphon connections for cable conductors that shall be fluid tight and thus, revent fluid from travelling along such con uctors.

Another object of my invention is to provide a conductor for fluid-insulated electrical apparatus that shall prevent the creepage of the fluid along the insulation of said conductor.

A better understanding of my invention will be obtained by reference to the accompanying drawing and to the following detailed description.

In the drawing, the single figure is a sectional view of a casing and cable connection illustrating my invention.

Referring to the drawing, a casing 1 is illustrated as containing an electrical device 2, such as a transformer, and a body 3 of 1929. Serial NO. 3541268.

insulating fluid, such as :oil. The transformer is connected Yto-an external circuit, not shown, by stranded cable conductors 4, one of Wliichais illustrated. The cable bex- .tends out of the transformer casing 1, through a'hushing .5, :in WhlCh:a'?tigl1t joint is formed :by ithe use-oticement16, or other iadhesivessubstance,which:aids in iholdingthe conductor ;m :place.

In order to form :a solid smoothsurface m :at the ;point where the lead passes the oil level, :the 'end section .7 o'ftthe cable conductor .4, is stripped of its zinsulating covering, the bare section extending from zthe enduf the cable $to.a-:point'well above .theflll level. Aimetalztdbe 9.=is1placed over the bare section of The conductor which is :inserted :in the of a pressedrtube (terminal '10. The lower portion of the tube 9aand the rterminal 10., after "the end :7 of the conductor is inserted thereinyoredipped :in solderato form .a fluid-tight 'zjoint at- 'l he supper part ot the tube 29 and the adjacent portion of the insulated cable :are (taped, as shown at 8, [to ;prevent diet 01' aotlier deleterious asubstances drum-entering thertube. The termihill :10 is attached :to :a :torminal board 13 where the leads 114N318 brought from 'the windings of the transformer :2.

It will be apparent that 'my invention can rbe applied :un'dercany circumstances where m. COIIdIICtOIPIISSGSTlfI'OIII oil or other liquid to a gaseous medium :above, regardless of .the character "of :the insulation of the conductor.

it 'will :bexevident "from :the foregoing descriptionithat itlre disclosed cable connection is .fluid ztight below the oil :levl, .and will prevent the oil ifrom travelling along :the COIICl'IICtOIWOI "its insulation.

Since many modifications, "within the spirit amd xscope of nry invention, may occur to xthose skilled in the art, I do notwvish to be slimited otherwise than by the scope of the appended claims.

1 claim as my invention:

'1. In combination, electrical apparatus immersed in :oilya stranded electrical conductor connected thereto and extending above the level 'of the oil, and means for 186 preventing the passage of oil along said conductor comprising a tube terminal for receiving the end of the conductor and a fluid-tight covering extending from said terminal to a point above the oil level.

v 2. In combination, a stranded electrical conductor having a portion thereof immersed in fluid, means for preventing the passage of said fluid along said conductor, sa1d means comprlsing a terminal attached to one end of said conductor, an impervious above the level of the fluid and means for attaching said member to the conductor at the terminal thereof, said attaching means comprising an impervious material adapted to fillthe space between the conductor, said --member and said terminal, whereby said member and said terminal are made integral parts of said conductor and the joint is made fluid tight;

4:. In a stranded electrical conductor provided with an insulating covering and havrounding said conductor, meansfor attaching said casing to said conductor and said terminal consisting of solder for filling the space between the said conductor, the said casing and said terminal, whereby they are made integral and the joint is made fluid tight. and means for sealing the other end of the casing and the conductor to prevent foreign substances from entering said cas- V a 7. In a stranded electrical conductor, means for preventing the passage of fluid substances along said conductor, said means comprising aterminal attached to one end of the conductor, an impervious casing surrounding said conductor,umeans for attaching said casing to said conductor and said terminal, said attaching means consisting of solder to fill thespace between the said conductor, the said casing and said terminal,-

whereby they are made integral and the joint is made fluid tight, and means for sealing the other end of the'tube and the conductor to prevent foreign substances from entering said tubing, said sealing means.

consisting of a pluralityof turns of tape.

In testimony whereof, I have hereunto subscribed my name this 28th day of March 1929. V '7 WILLIAM R. WARD.

ing the end thereof immersed in a fluid,

means for preventing the passage of said fluid alongsaid conductor, sald means consisting of a terminal attached to the 1mmersed end of said conductor and an impervious member surrounding said conductor and extending labgve the level of the fluid, and means for attaching saldmember to said conductor at the terminal-thereof,

whereby said'member and said terminal are made integral parts of said-conductor to form a fluid-tightljoint. a 5. In a stranded electrical conductor,

means for preventing the passage of fluid substances alongsaid conductor, said means comprising. a terminal attached to one end of the conductor, an impervious casing surrounding said conductor, means for attaching said casing to said conductor and to said terminal consistingof solder to fill the space between thesaid conductor, the said casing and said terminal, whereby they are made integral and the joint is made fluid tight.

6. In a stranded electrical conductor, means forpreventing the passage of. fluid substances along said conductor, said means comprising a terminal attached tooneend of the conductor, an impervious casing sur-

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