US 1673738 A
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`fune 142, 1928. 1,673,738
A. B. DIBNER ELEGTRI CAL CABLE CONNECTER Filed June 17, 1925 @i E5" I;4|
l @351g m5 abme/13 aww Patented June 172, V'1928.
UNITED STATES PATENT oFFIcE.
' 'ABRAHAM BERNARD-manna, or BROOKLYN, NEW vom ELECTRICAL CABLE CONNECTER.
Application led June 17, 1925. Serial No. 37,755.
' vide the connecter with a plurality of griptive position; Figure 2 is sleeve having its en ping jaws which are adjusted to bite into the surface of the cable and thereby insure perfect contact.
A still further object of the invention is the provision of an electrical connecter comprising a complete unit from which no parts are y# removable for installation, thereby avoiding all possibility. of losing or necessity of inserting arts. A
A preferred em odiment of my invention is illustratively exemplied in theaccompanying drawin s, in W ich Figure l is a longitudinal sectional view of myk improved cable connecter showing the parts in operaan end view of the same; Figure 3 is an elevational view of the connecting sleeve; Figure 4 is an end view ot the same; and Figure 5 is a longitudinal sectional view of the connecter showing the position of the parts before the jaws are clamped..
Referring to the drawings, lpdenotes the connecter comprising an exterioly threaded s upset to prevent two nuts, ll, adjustable over the threads, from being removed. The bore of the sleeve is uniform throughout its midportion and is nl va diameter slightly greater than that of the cable ends l2, the midportion being oi a length measured by one half the length of the entire sleeve. From the midportion oi the sleeve the bore is provided with a series of annular ridges 13 adjacent each end, the ridges increasing in amplitude and whose diameter at the apex is increasingly smaller than the cable diameter after the ends oi the sleevev are contracted by the nuts until the last ridge which flares out to meet the outer surfaces forming the upset ends of the threads. lin order to make the ridges i3 eective the sleeve l0 is s lit lon 'tudinally at a pluralit of radial points an for a distance of substantially seven-ei hths of the tube length. The cuts, denote 14, are disposed alternately from opposite ends of the sleeve.
To place the connecter in position, theY nuts ll are arrangedin the center 'of the sleeve l0, as illustrated in Figure v5. The
opposite ends of the sleeve are flared to'a degree whereby the annular ridges 13 on the bore of the sleeve, are smaller in diameter than the cable 12 when the ends of said sleeve are contracted. ,This flaring enables each cable to be tube without .this flaring gradually increases the diameter of the threaded outer surface as it appreaches each end.
projected halfway into the obstruction. Furthermore,
'lhe cable ends l2 are inserted halfway A into the connecter and the nuts l1 turned in opposite directions over the threads, an operation which forces the latter to assume their originaldiameter or position and whilch forces the annular ridges into the ca e.
The present connecter has the advantage of being an integral unit when adjusted and having its parts inseparable. lin one operation, both ends of the cable are clamped and irmly held and since'the torce of application is the same at both ends, both cable ends are retained with lequal forces, thereby allowing nol weaker side. lt will be clear that'the line of pressure of the nuts is directly opposed by and in' line of reaction, so
of alternately split- Aequal to the rbistance of the cable'material.
The long leverage. of the jaws also increases the life and use ot the connecter preventing breaking at the points of leverage. lt is to be noted that the long leverage oi the jaws permits a. sleeve of large cross section and ample current carrying capacity.
at li claim is:
l. An electrical connecter, comprising a tubular body portion split longitudinally at a plurality of radial points and flared to increase the crossV sectional thickness and strength at opposite ends, said splits being disposed alternately from body, the bore of the body portionbeing provided with a series of annular ridges adjacent each end, the exterior of the body being threaded and upset at the ends, and a pair of nuts adjustable over said threadsto contract the portion between the slits..
long leverage obtained either end of the 2. An electrical connecter comprising a videdv adjacent the ends with a series of antubular body portion split longitudinally at nular ridges, each thereof` increasing in a plurality of radial points and flared to inamplitude and having a diameter of apex increase the cross sectional thickness and creasingl smaller than the diameter of the 5 strength at opposite ends, said vsplits being cable to ge connected whenthe ends of said disposed alternately from either end oi sleeve are contracted. the body, and means adjustable over the In testimony whereof, I have signed mf latter to contract both ends at said flared name to this specification. this 15 day of rtion, the mid `portion of the bore of the June, 1925. 10 dy being straight and the wall being pro- ABRAHAM BERNARD DIBNERA