US1470423A - Trolley-wire hanger - Google Patents

Description

Oct. 9 1923.

lllllllllI/[IJ A A W. L.. BRADY TROLLEY WIRE HANGER Fled July 1l, 1922' will Ill

VA TTORNE Y.

Patented Oct. 9, 1923.

UNITED STATES PATENT oFFllcE.

#ALTER L. BRADY, F DEHUE, WEST VIRGINIA.

TROLLEY-WIRE HANGER.

Application filed July 11, 1922. Serial No. 574,191.

West Virginia, have invented certain' new and useful Improvements in Trolley-Wire Hangers, of which the following is a speci= ication.

This invention relates to supports for wires and the like, more particularly to a device for suspending electric trolley and like conductor wlres 1n mlnes, tunnels, and simllar localities, but which may be employed in a variety of locations, and has for one of its objects to provide a device of this character which may be quickly installed where r'equired and removed and installed in another locality and thus repeatedly used.

With these and other obJects in View the invention consists in certain novel features of construction as hereinafter shown and described and then specifically pointed out in the claim, and in the drawings illustrative of the preferred embodiment of the invention:

Figure 1 is a vertical sectional elevation of the improved device applied.

Fig. 2 is a side elevation of the expansible portion of the improved device.

Fig. 3 is a transverse section on the lino 3 3 of Fig. 1.

The improved device comprises a holding element in the form of a tubular stock or body 1() which includes a polygonal shaped lower portion 12, a cylindrical intermediate 1 portion and an upper portion. The lower portion 12 is of a contour to receive a wrench or other tool. At the point of joinder of the lower portion with the intermediate portion the stock is formed with a lateral flange 11.

The outer periphery of the upper portion for a part of its length is provided with cutting teeth for a vpurpose to be hereinafter referred to.

The stock 10 is provided with a plurality of elongated clefts 13 of less length than the length of the stock, and the said clefts 13 extend through the threaded or toothed portion of the stock and provide the upper por- A.tion of the stock with outwardly shiftable gripping tongues. The clefts 13 are of greater length than the len h ofthe threaded or toothed portion of t e' stock, and'extend entirely through the latter and are ar` ranged equi-distant with respect to each other. The clefts are so set up to provide the tongues of gradually decreasing width upwardly.

The threaded portion of the stock is Apreferably initially tapered externally and also slightly tapered internally, as indicated in Fig. 2, which represents the stock beforeI being applied.

The threads of the stock are preferably of the rapid arrangement, as indicated at 14 in Fig. 2, and preferably ratchet shaped transversely or with one face substantially at right angles to the axial line of the stock and theother face oblique to the axial line,

to increase the grip of the teethwhen in-4 serted and rotated 1n the supporting body.

Disposed within the threaded and cleft portion of the stock is an internally screw threaded tapered sleeve 15, the sleeve adapted to be engaged by the threads of a han er rod 16 which is connected to a head mem r 17. The member 17 supports a clamping device, represented conventionally at 1-8, for holding a trolley wire, a `portion of which is represented at 19.

The sleeve 15 vis provided with longitudinally directed ribs 20 which extend into one or more of the clefts 13, to prevent rotation of the sleeve while leaving it free to be moved longitudinally of the stock.

In applying the improved device, a hole is bored in theceiling or wall of the mine, drift, gallery, tunnel, or other place where the trolley wire is to be supported, the latter indicated at 2.1. .The stock 10 having the tapered sleeve 15 in its outer end is then inserted in the bored hole and yrotated yby a wrench or like implement applied to the por- .tion 12 of the stock to cause the teeth or trolley wire grip 18 carried thereby to thel l wall 21. The trolley wire,4 is then applied to I Athe clamp' and the clamp nut 22 rotated to bind the jaws of the trolley clamp upon the wire.

Should any looseness develop the slack -,can be readily taken u by a few turns of the head 17 and the ro 16 carried thereby, as will be obvious.

-The device can be easily detached by re- .verselyrotating the clamp nut 22 to release the trolley wire from the clamp 18, reverse- 1i rotate the head 17 until the bolt 16 moves t e sleeve 15 to the smaller end of the hole bored for the stock, thus permitting the divided portion of the stock to be contracted by its own resiliency and easily removed by reversely rotating by wrench or like implementpapplied to the portion-12 of the stock.

The location of the improved device may thus be quickly changed as required, during the progre of the mining operations.

4The improved device is simple in construc- Having thus described the invention, what is claimed as new is:-

A trolley wire hanger comprising' a holding element in the form of a tubular stock consisting of a polygonal-shaped lower portion, a cylindrical intermediate portion and an upper portion having its wall slit throughout at a plurality of points to form a series of tongues shiftable outwardly with respect to said intermediate portion and each having its outer face provided with teeth, said stock further including a lateral ange at the point of joinder between said intermediate and lower portions, a head member abutting against said lower portion, a hanger rod carried by the head member and extending up through said stock and having the upper portion thereof threaded, and a tapered sleeve mounted in said upper portion and provided with internal threads engaging with the threads of said rod to provide for the moving of the sleeve downwardly causing thereby the outward shifting of the tongues to engaging position, said sleeve having peripheral ribs engaging between' the tongues to arrest rotative movement of the sleeve when moved downwardly by the rod.

In testimony whereof, I aHix my signature hereto.

WALTER L, BRADY.

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