US1606230A - Cable-terminal structure - Google Patents

Description

Nov. 9 ,1926. r 1,6o6,23o

. J.I F. JAAP CABLE TERMINAL STRUCTURE FiledA'p'ril 25, 1,923

e main cable by the linemen. During thisop-v Patented Nov. 9, 1926.

TEN-I OFFICE. i

.IOIIN F. JAAI, oICIIIC'ACfo,l ILLINOIS, AssIGNon TOCOOK ELECTRIC COMPANLOF CHICAGO, ILLINOIS, A. CORPORATION or ILLINOIS.

CABLE-'TERMINAL STRUCTURE.

Application filed Apen 23,Y 1923. seriai No. 633,942.

mounted out-of-doors upon a' pole or build-V ing. In'most instances, the terininal'housing is placed on a pole or other Astructure at a point somewhat below the horizontal por tion of the cable line, and furthermore, it is usually desirable to have the cable enter the housing from the under side, whichenables the terminal connections to be housed beneath a moisture-proof container or hood, which may be installed and removed as a unit and the upper surface of which isunbroken by the use of water-proof doors or covers. Such practice, however, is open to the possible disadvantage that the stub of the cable connecting the cable terminal'with the overhead cable line must be sealed into the terminal housing, then shaped in a curved form and extended upwardly along the pole or other structure and spliced to the eration, the bent portion ofthe cablemay be in some instances subjected to 'the possibility of being'di'storted orf injured kinkinfr. fi further, possible disadvantageV with this practice arises from the vibration ofthe curved stub of cable, which vibration may be', transmitted 'to andalso to some extent concentrated at the middle of the curved pori sheathing at this point. The structure con prisiiig my invention has been found tobev especially useful in `installations wherev the above Vdiflicultiesare likely to be encountered.

However, the above statements are not, in

tended to condemn the use ofthe previously knownstructures in all instances.

, As a result of these possible disadvantages with previous practices,f the practice of bringing the cableoutof the top of theterminal housing at a point as close'to the pole as possible has often been followed.4 How-A ever, if the cable is brought out at the top of the housing, it is necessary to use a housing provided with a waterproof door, give ing access to the connections inside, since then it will no longer be possible torremove the upper part ofthe housing asa Whole beycausevof the cable being sealed' therein. The Viise of housings with moisture-proof A'doors will often necessitate amuch more expensive and less durable construction than the -removable hood type having the cable entrance at the under side through the base of the maintain in a water-proof condition.

Accordingly, one aim of this inventionis torprovide an improved structure' wherein the cable may be advantageously brought kinking during or after installation.

t 'A further object of1 my Vinvention resides in the provisionfof a structurecf tlievabove indicated character, in which excessive vibra-` tion and its destructive effects at the curved portion of the cable are eliminated.

A still further object of my' invention is the provision of a device of the character indicated which is easily installed, convenient to use, comparatively inexpensive .to'inanufactu'reand which is very durable even under adverse service conditions. o

Further objects and advantages 'will'apvpear upon reference to the'following description `and the appendedi'claims, taken together Y with the accompanyingy drawing in: which- VFigure 1 is aside elevational view illustrating one embodiment `of my inventiomas installed in operatingprosition'; -l Fig. 2 is a sectional view taken uponV line 2 2 of .Fis-1;; .y

Fig. 3 is a detail view illustrating a modified form of my invention; and,A

Fig. 4 is a detail view of a nozzle ernbodied inV the structure [shown in' Fig. 1. Referring `to Fig-1, an aeriallead-covered cable line'is represented at 10. A container or hood 11 serves to house the terminal connections4 of thecable. i The hoodll may rest upon a platform or lbasemember 12, `which in turnv maybemounted upon a pole orv other structure.. 13, which also inV this 'instance serves to support thecable line. Tli'eplatform l2 may preferably comprise an inte gral casting as illustrated, having bracket portion 111 for Vattachnieiit tothesupporting structure :inY anysuitable andwell known manner', as by means of `a'cross piece 15.1

The platform 12 may 'be formedjwitli a liousingjj It is also apparent that the metal l .hood type vof structure Vis much easier to ico perforation 16 at a ointibeneath a core-box 17 for permitting tie passage therethrough of the cable. should Ebe provided with 'a moisture-proof seal at a point where `it passes into-the -corebox and accordingly, I have provided a nozzle or nipple member 18 into which the cable may be soldered. The nozzle 1,8. should preferably be of a slightly larger diameter .than the ycable .'sheath and .may have .its lowerfend beveled :inwardly at 19 Vto provide .a kshoulder Aaga-inst which suitable packing .20, .such .as asbestos, may .be pressed. In iin- .stallingffthe cable Within the =nozzle 18, .the .cable sheath ,should ,preferably -be lfirst ssmaiped clean and fthen inserted in its final position. 4The asbestos packing 20 maybe securely packed around l.thecablefsheath Just outside lthe muzzle .and then may be vpressed .inwardly against the shoulder at `19. A sleeveofsolder '.21may then be inserted and firmly Lpressed down. When the parts have thus been .-assembl'ed, sufficient heat may be applied around `the .outside .of the nozzle to -causethesolder to melt .andseal the cable .in position. 'The @nozzle should preferably .be

y.provided with an exterior :shoulder :22 near its .upper end, which will labut .the bottom surface Aof the corebox 4'117 when the ,nozzle .is v.inserted `through the y perforation .16. The upper edge ofthe nozzle may :be beveled .or

s rolled-outwardly-at23 in .order to firmly fix .thenozzleinplace within .the core-box. 'The -fuse .of a nozzle of this .character eliminates the necessity of .a skilled .cable Workman for .assembling .the device without lowering the quality of the resulting construction. downwardly f'nom the Affter .extending .core-liox' through the nozzle `18, the .cable maybe 'brought .overtoward the supporting as indicated .at '24 "preferably semi-circular infform. The cable may then extend ,up-V

wardly through .a .second `vperforation at '25 in the v.platform '12 adjacent the v:supporting s'truotnre`13. The perforation 25 may be y the horizontal Vportion of the cable line. f

With a construction ofthe above .described character, the/hood '11 may be fabricated of :light s'heet metal and maybe installed upon or removed from the 'base 1Q as avun-itary structure im the form of acap. Such a 'hood p in no way interferes with the entering cable terminal and connections and when 4removed renders lthe ,corefbox 17 and the terminal connections easily accessible Afrom all sides. The use of water-proof doors 4or hand open v ings and their accompanying disadvantages aazeftlius avoided. l

It 1sv also apparent that 'the more common It is desirable that the cable ldisailvantages oit this class oit terminal structures having cable entrances through their base members are here eliminated. In accordance with this invention, fthe cable 'is securely gfined :and supported at the nozzle 26 .so that While the lineman is carrying the cable upwardly along the structure 13 and forming va splice with the horizontal line portion 10, there will be practically no opportunity for the curved ortion yQtto be- :mina'ls constructed and assembled in the' tions -o'f .`t`he nozzles '18 and .26, above described. Thls construction serves to .fully su port 'the entire `.curved portion of 'the ca' le and thereby prevents all appreciable ,relative vibration between its various ,parts and its iiXed points of support at 28 and Q9.

-.Funthermore, the platform together with the short length of, ipe 27 and Lthe core-box 117 may be assemble if desired, as apart -of the manufacturing process and Ibe'fore being .carried up and A`attached to the structure 13.

lThe curved lportion being completely housed and proteoted'by the pipe is not subject 'to .mechanlicalinjury 'from kinks, undue 'bendor other causes. The cable may ."be

sealed l.into Vthe end`29 olf the pipe with any suitable known 'filling compound.

`Wl1ile`I have shown and described 'several embodiments Kof my invention, I Wish it tobe understood that I do no't desire "to limit myself to thespeci'c construction .herein shown, .since various .changes and modiications may barriada-Without departing from the spirit and scope-of the following claims. V .Having 'thus described my invention, what I claim as new and desire to secure by Letters Pa'tent of the rUnited States, is:

1. A cable terminal structure comprising a platform', a terminal housing thereon, a

`cable extending downwardly Ythrough 'said platform at a point to one side of said housing and thence upwardly to a point beneath said housing and through said platform into said housing, and means sealed at the cable at each of said points for rigidly fixing said cable against vibration in respect to said platform.

2. A cable terminal structure comprising a platform, a terminal housing thereon, a cable provided with a sheath and extending downwardly through said platform at a point to one side of said housing and thence upwardly to a point beneath said housing and through said platform into said housing, and means fixed in respect to said platform for enclosing the portion of saidcable sheath beneath the platform for preventing kinlring and vibration of said portion.

3. A cable terminal structure comprising a platform, a terminal housing thereon, a multi-wire cable having a metallic sheath and extending downwardly through said platform and thence curved upwardly and again extending through said platform to said housing, and a section of pipe rigidly xed at both ends in relation to said platform and embracing the portion of said cable beneath the platform for preventing kinlzing and vibration of said portion.

4f. As an article of manufacture, a cable terminal structure comprising a terminal housing platform, said platform being provided with a pair of spaced perforations, and a section of pipe for enclosing and restraining from vibration a portion of cable, said pipe being positioned beneath said platform and having its ends curved upwardly and extending through and rigidly fixed within said perforations.

5. As an article of manufacture for use with ay terminal housing having a cable entrance from the under side, a cable terminal structure comprising a terminal housing platform, said platform being formed with a pair of spaced perforations, one of said perforations being adjacent the point of sup port of said platform and the other of said Vperforations being beneathV the terminal ousing position, and means extending between" said perforations for embracing and sealing a portion of acable in fixed position therein.

6. In a device lof the type described for use with a terminal housing having a cable, entrance from the under side, a cable terminal structure comprising a. terminal housing platform, a cable provided with a sheath and extending downwardly through said platform at a point adjacent the point of support of said platform and thence curved upwardly and extending through the platform into the housing, and means comprising a section of pipe enclosing the portion of said cable sheath beneath the platform for preventing linking and vibration of said portion, said section of pipe having an end rigidly fixed to said platform adjacent to the terminal housing and having its other end sealed to the cable and fixed adjacent the point .of support of said platform.

In witness whereof, I have hereunto subscribed my name.

JOHN F. JAAP.

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