US310938A - gilliland - Google Patents

Description

E. T. GILLILAND.

SUSPENSION 0E AEEIAL CABLES.

(No Model.)

Patented Jan. 20, '1885.

n Y 130656 e6.

Unirse STATES Farmer ICZRA T. GILLILANI), OF BOSTON, MASSAOHUSE'IIS, ASSIGNOR TO Tl'llll AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.

SPECIFICATION fer,

Application [ilcd .I'nly 19E-l.

2'0 all whom, it may concern.:

Be it known that I, Exim T. Grnigimrvn, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain Improvements in Suspension of Aerial Cables, of which the following is a specification.

The object of my invention is to provide an improved support or suspension for aerial eables.

My invention consists in providing two or more supporting-wires, or one supportingwire and a leading-in wire, and a cable-clip, formed preferably of sheet metal, the opposite sides or edges of which are formed into hooks, stirrups, or passages of appropriate dimensions-one for the reception of the supported cable or cables, and the other with two or more separate hooks or passages for the-reception of two `or more separate supporting- Wires, or one supporting-wire and a leadingin wire.

I-Ieretofore a eable has been suspended by a single supporting-wire, and eable-clips have supporting-wire and one for the supported cable, and when the supporting-wire became. weakened by corrosion or wear the entire suspension was lowered to the ground for the purpose of replacing the supporting-wire.

In myinvention, by the use of two suspending-wires, or one suspending-wire and a leading-in wire, it is possible to replace any portion without lowering or disturbing the whole suspension.

I also provide a device for attachment to the end of the suspension-wire or to the leading-in wire, whereby the wire or cable to be placed in position may be smoothly drawn through the hooks or passages in the clips. It consists of a metal barrel, screw-threaded on one end to receive one wire, and an opening` in which to form a swivel-j oint with the other wire, one or both' ends of said barrel being tapered off to a smaller diameter than that of the passage in the eable-clips.

I have found it desirable in some cases to provide for hanging additional cables onto the same suspending-wire. This is done by slightly varying the form of my improved cable-clips. Two cables may also be suspended ig part of Letters Patent No. 310,938, dated January 20, 1885.

(No mod el from two suspendilig-wires by the use of my improved eable-clip, which is adjustable for this purpose, whereby a more rigid suspension is obtained, at the same time providing for the replacement or substitution ot' any part of the suspension.

Figure l shows a section of a suspended eable employing myimproved clip, a suspendingwire, and a leading-in wire. Fig. 2shows one form of my improved clip. Fig. 3 shows a complete suspension, embracing Figs. I and 2. Fig. 4 is the device for leading a wire through the clips. Fig. 5 shows the leading-in device in operation. Fig. ti shows a combination suspension. Fig. T is a modification.

In Fig. l, M is an aerial cable suspended by the clip C from a wire, s, of sufiicient tensile strength. The clip C is shown enlarged in Fig. 2, and consists of two sections, b d and a c, eut preferably from a brass sheet, the opposite sides formed with hooks or stirrups c and d', a and c, according to the intended use.

I The two portions are brazed, soldered, or rivbeen used having but one receptacle for the eted together. If one cable only is to be provided fer, the hooks to receive the cable are bentinto position, having their central section in substantially the same vertical plane; if to receive two cables, they diverge as in Fig. (3. A clip is thus formed having four or more stirrnps. Through one stirrup is passed the suspension-wire, as in Fig. l, and through its companion a leading-in wire, preferably of some incorrosive metal, as a. It' at any time the suspension-wire becomes weakened and it is necessary to replace it, I employ such a device as shown at N in Fig. 4. A suitable metal cylinder, N, is provided, tapered oif at one or both ends. At one tapered end, t, a passage is made about the size of the leadingin wire, and meeting this from the opposite end is a passage about the size ot' the suspension-wire, in which is ent a screw-thread, ar, to take a screw eut upon the end of the suspension-wire. The leading-in wire is introduced, its ends knotted to form a swivel-joint, y, the suspension-wire screwed into the opposite end and drawn through the clips, as

shown in Fig. 5. `Vhen the new wire has been placed in position, the leading-in wire is attached tothe old suspensioirwire and drawn IOO into position as the old wire is drawn out, l where it remains until again required for service. A desirable modilication of this arrangement is shown in Fig. 6, where, in place of a leading-in wire, l use a second suspensioir wire, s', and carry a second cable, M', all in the same clips. lf one suspension-wire becomes worn, it may be replaced by employing it as a leading-in wire, the' entire weight oi' the suspension during` the process of substitution being transferred to the other suspension-wire.

The cable-clip above described is adjustable, and maybe so manipulated as to be readily adapted to support two cables from one wire, as shown at M M in Fig. 7, or one cable and two wires, as in Fig. l.

The cable-clip above described being formed of sheet metal of suiiicient width to prevent its turning, bit-ing into, and holding a wire which is being drawn through it, the replace ment ot' one of the supporting-wires is rendered possible. Moreover, the two eyes or loops for the supporting-wires at the top of the vertical stem are in close proximity, and practically in the same vertical line with the stirrup or stirrups; hence, il it becomes necessary to replace one of the members ot' the suspension, the other two members hold the clip in the normal position while the snbstitution is being ei'lected.

ofthe wires in the manner pointed out.

Vhat I claim, and desire to secure by Letters Patent, is-

1. A suspension for aerial cables, comprisl ing two or more wires and a series oi" cable clips, each clip having a vertical stem, two eyes or loops at the top of said stem, and a stirrup or stirrups at the lower end, substantially as described.

0 A suspension for aerial cables, consist in l lf the loops for the supporting-wires are too i'ar apart, or not sul'4 5 iieiently elongated to preventlairning, it would' be difficult, it' not impossible, to replace one of a suspeinling-wire, a leading-in wire, and a series of cable-clips, hooks, or connections.

3. A suspension for aerial cables,eonsisting of a suspending-wire ot' considerable tensile strength, a leading-in wire i'ormed of a metal which may be ot' low tensile strength, but which is less liable to eorrode, and a series ol" cable-clips, hooks, or connections.

4. An aerial suspension consisting of a suspending wire or wires7 two or more cables, and a series of clips or connections, each clip having a separate hook or stirrup 'for each cable, so that each cable is supported independently of the others, substantially as described.

5. A cable-clip of sheet metal, having a stein vertical when in position, and elongated loops or passages for the reception of three or more wires or conductors, substantially as described.

(5. A cable-clip formed oi" two pieces of sheet metal fastened together and provided with hooks or passages for the reception of three or more wires, cables, or conductors, substantially as described.

7. In a device for drawing cables through suspension devices, swivel-jointed connection having a tapering end l'or connection thereat with a leading-in Wire, and screw-threadel'l at the opposite end to receive the threaded end ol` the wire to be led in, substain'ially as described.

S. The improved cable-clipdescribed, being of flexible metal and having a stirrup or stirrups for the cables, and two'elongated loops or eyes in close proximity i'or the supporting wires, as set i'orth.

In testimony whereotI l have signed my naine to this specification, in the presence oftwo subl scribing witnesses, this Zlth day o1' June, 1884. l EZB-A T. GILLTLAND.

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