US1758312A - Electrical line apparatus - Google Patents

Description

May 13, 1930. E. J. DE RIGHT ELECTRICAL LINE APPARATUS Filed Aug. 16. 1928 In venfior:

Patented 'May 1 3, 1930 ELON 3'. .DE RIGHT, OF ST. LOUIS, MISSOURI ELECTRICAL LINE APPARATUS Application filed August 16, 1928. Serial No. 300,103.

This invention relates to electrical line apparatns and has articular reference to an improved device or connecting guy or line wires and cables together, or to associated apparatus, in a simple, practical and efficient manner. v

One object is to provide means for connecting a plurality of like presented, laterally spaced, cable-ends by a connecting bridge member, or yoke, spanning the space between, and having means for anchoringly receiving, said ends.

Another object is to provide an improved form of cable loop or eye including means for connecting laterally spaced, like presented, cable loop ends, to a medially disposed, oppositely presented, guy or line end, said cable loop ends normally being in parallel relation.

Still another object is to provide means for connecting oppositely presented cableens continuing or spliced relation, by a member adapted to receive said ends in clamping engagement.

further object is to provide means adapted for use in connecting a strain insnlater to a guy or line Wire, or the like, by means or a member median'y the guy or line wire and spanning centers of air of loop receiving grooves in the in snlator for receiving the legs of a U-shaped member aligned with and engaging said grooves, whereby the stresses in the insulator are evenly distributed, and the load from the central cable equalized or balanced; thus avoiding so-called spot-loading or localiced or pinching stresses which commonly occur in strain insulators when used in connecticn with ordinary looped cable-ends or A. still further object is to provide means for rapidly and eiliciently securing cablel y means of an enclosing member in device adapted to unlay the cable said enclosing member, thus eliminating the practice of serving or cable-wrapping.

With the foregoing objects in view, I will describe by invention, which consists in the novel construction, combination and arrangement of parts hereinafter fully and concisely claims, and illustrated improved cable described, definitely pointed out in the y the accompanying drawing, in which:

Fig. 1 is an end view of a three-cone cable yoke; Fig. 2isapartlysectional side view of Fig. 1; 3 is a partly sectional side view of a modified form of my invention embodyin a two-tone yoke, shown in connection wit a stranded cable end wedgingly inserted in one of the cable openings for connection to the yoke; Fig. 4 is a view showing a threecone yoke, in association with a strain insulator, illustrating the manner of forming my loop; Fig. 5 is a view along the line 5-5 of Fig. 3; Fi 6 is a partly sectional side view of a wedging element; Fig. 7 is a part1 sectional side View of a modified form 0 my invention embodying a two-cone clevis yoke; Fig. 8 is a sectional view of a splice ball embodying a modified form of my, invention; and Fig. 9 is an'end View of the splice ball shown in Fig. 8.

Referring now more particularly to the drawings, I show, by Way of illustration or" my invention, one form thereof, best seen in N Figs. 1, 2 and l, which preferably comprises a rigid yoke or connecting device A including a yoke-bar or bridge member 1 having at its ends parallel bosses or cable-hubs 2, each axially channeled by a similarly facing, preferably frusto-conical, cable-opening 3 for wedglngly receiving a cableend 4, as seen in Fig. 8 in connection with a modified form of the invention presently to be described. As suggested in Fig. 4, the cable hubs 2 may conform to, and span the center distance of the pair of cable-grooves 5 of an associated strain insulator B, the cable-ends 4, in this case, forming the groove-fitting termi nals' or" my improved Ushaped flexible member or cable-loop G having its bight 6 mountingly passed through said insulator in the usual. aperture provided therein, and its legs endwise presented therefrom; "the yoke A bridging the open end of the U-shaped cable-loop G, with the legs thereof anchored in the hubs 2, as will presentely appear.

By this construction it will be seen that the loop-ends are bridgingly supported across the end of the insulator body, so that the stresses set up in the insulator are evenly distributed therein, whereby any pinching action by the cable-loop, such as commonly occurs when using ordinary cable eye loops, is in my construction entirely avoided by reason of the approximately parallel arran ement of the legs of the U-shaped member and the uniform contact of the loop C on the insulator B.

or U-shaped member, opening in the direction P of the small ends of the cable hubs 2, the yokebar 1 forming the bight thereof, as sug ested in Fi 3. Other similar elements of this modi ed form of yoke A, have the same form and function as hereinbefore set forth for like referenced parts of the yoke A. The yoke A has, in actual practice, been found useful when employed in crossed pairs, back to back, for connecting the insulators B into groups or assemblies common to. line structures; but for connecting a yoke A, or the terminal insulators of such a group, to a guy or other line wire, I preferably employ a three-cone yoke as described, both forms, P

however, when suitably connected to approriate load carrying cables, form an equaliz- 1ng load-transmitting device, or bridge, which 5 ans the insulator loop-receiving grooves or evenly distributing the load from or to the several cables in an eflicient and practical manner.

Although my invention may be used with cables or wires of other forms and sizes, I have found in practice that uy and line'wires are commonly seven-strand cables having a central or core strand 10, and six laid strands 11 (Fig. 5), such cables being also intende to be used for the cable loop C (Fig. 4,) scrap ends of the guy and line wires forming an economical and convenient source of sup ly thereof. "As best seen in Fig. 3, each ca le end 4 is passed through the small end of its cable-hub 2, with the strands 11 divergingly unlaid from the core strand 10, to engage the sloping wall of the cable opening 3.

For wedging the cable-end 4 in the opening 3, I may employ a filler, such as cast or hammeredleador copper, but I prefer to. provide a vwedging member or cone 12, centrally channeled as at 13 for sliding reception of thecore-strand 10, and having, at its larger or spreader-end, a plurality, preferably six, latorally extending spreader elements or ribs 14 'in Fig. 8.

for spreading engagement between the several strands 11 to unlay said strands and space the same uniformly against the wall of the cable-opening 3, (Fig. 5). The adjacent ribs l lform therebetween, wire or strand receiving grooves or channels 14' which may be grooved in the cone 12, to conform to the helical twist in the several wires as they are unlaid; but I prefer, as shown, to form each of the ribs 14 with a tapered or sloped strand presented end, as suggested in Fig. 6. The ribs or spreader elements 14 unlay the strands 11 in a simple and positive manner; prevent bunching of the strands; assure the uniform distribution of stresses in the cable-hubs 3, and insure equal im osition of the load on the several strands 11 o the cable end.

The cable-hub 2, in connection with the spreader elements on the cone 12, also forms a simple and effective means for securing cable-ends, thus eliminating serving or wraping of the cable-end to prevent undesirable raveling of the strands.

To connect a cable, as 9, to the yoke A, the cable-end 4 thereof is passed through the small end of the cable-opening 3, sufficiently to permit unlaying the strands 11 from the core-strand 10, as described. The cone 12 with its small end foremost is then slid over the core-strand 10 with the spreader elements 14 engaged between the several strands 11, and the end of the core-strand 10 is hooked or bent over the spreader-endof the cone, as suggested at 15 (Fig. 3).

To complete the operation,;the cable 9 1s ulled back or away from the cable-hub 2 until wedging action occurs on the cable strands 11 between the cone 12 and the wall of the cable-opening 3; the taper of the cone 12 preferably conforming substantially to the taper of the wall of the cable-opening 3.

In Fig. 7 I show a modified form of my invention embodying a two-cone clevisoke A wherein the yoke-bar 1 has a pair 0 preferably integrally formed, spaced clevis members 16 extending in the direction of thelarger ends of the cable-hubs 2, and having aligning transverse pin receiving apertures 17 for d attachment of an eye bolt or like member (not shown). Such aclevis-yoke A may be used for dead-ending in conjunction with an eyebolt, or for like purposes obvious to those skilled in the art. Other elements shown in the modified form A have the same form and function as hereinbefore set forth for like referenced parts in the three cone yoke A. In Figs. 8 and 9 I my invention, which I describe as a spliceball D, adapted for use in connecting or s licing opposing cable-ends in continuing direction, as suggested by the center line 18 Provided in a block 19 and obliquely disposed to the center line 18, with their small ends 20 op sitely centered thereon, and with their a'rge ends 21 opening show a modified form of I through the oppositely inclined sides of the block 19, are parallel adjacent frusto-conical cable openings 22, each adapted to coact with one of the cones 12, similarly to the cablehubs 2, as hereinbefore described, for wedgingly receiving the ends of the associated cables (not shown). Such a splice ball D may be used in place of a guy-clamp for splicing wires or cables, or for like purposes obvious to those skilled in the art.

' I claim as my invention:

1. In a connecting device for stranded cable including a member having a tapered cable receiving opening, a wedgin member for insertion in the opening, slirfiibly disposed on the cable to be secured in said opening, and strand-engaging projections disposed on the wedging member.

2. In a connecting device for stranded cable, including an internally tapered member adapted to surround an end portion of the cable, a wedge adapted to be received by the surrounded cable portion, and tapered pro jections on said wedge for (llSPOSlIlg certain v ble,

of the cable strands in spaced relation.

3. In a connecting device for stranded caincluding an internally tapered member adapted to surround a portion of the cable an element carrying a plurality of tapered lugs adapted to separate the strands and maintain them in spaced relation within said member.

4. In a connecting device for stranded ca-' ble, including an internally tapered member adapted to surround a portion of the cable, a spreader element having an opening therethrough adapted to receive the core strand of the cable, and a plurality of wed e-shaped projections on said element, adapte to maintain the remaining strands in spaced, clamped relation within said member.

5. In an-end securing device for stranded cable, including a member having a tapered cable opening, a wedging member slidable on the core-strand of the cable, and wedge-like projections on said wedging members, adapted to engage the other strands of the cable for unlaying the same in said opening.

6. In a cable connecting device, including a cable receiving member having a frustoconical cable receiving 0 ning, a frustoconical wedging member slldable on the corestrand of the cable and having an exterior surface portion conforming to the wall of said opening for wedging the other strands of the cable between the wall and wedging member; said wedging member including a plurality of tapered ln s, disposed near one end of the member and adapted for spreadingly engagin said last mentioned strands for unlaying t e same in said cable receivm openin g ELON J. DE RIGHT.

Images