US400552A - Telegraph-wire carrier - Google Patents

Description

(No Model.)

R. S. DONALDSON. TELEGRAPH WIRE CARRIER.

No. 400,552. v Patented Apr 2, 1889.

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UNITED STATES PATENT ()EEICE.

ROBERT S. DONALDSON, OF VILKINSBFRG, PENNSYLYANTA.

TELEGRAPH-WIRE CARRIER.

SPECIFICATION forming part of Letters Patent No. 400,552, dated April 2, 1889.

=.Application filed December 16, 1887. Renewed February 11, 1889. $erial No. 299,559. (No model.)

To aZZ whom it may concern.-

Be it known that 1, ROBERT S. DONALDsON, a citizen of the United States, residing at \Vilkinsburg, in the county of Allegheny and State of Pennsylvania, have invented a cer tain new and useful Improvement in Telegraph-\Vire Carriers, (Case 1,) of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawin forming a part of this specification.

My invention relates to taking down and putting up electric wires; and its object is to facilitate the replacing of old wires with new upon the telegraph-poles.

It is well understood that the wires are suspended upon insulators, which are usually mounted on upright pins upon the cross-arms. \Vhere large numbers of wires are strung along upon the same poles it is not easy to replace an old wire with a new according to the method now in use, since the old wire when cut at frequent intervals, as has been necessary, will fall against other wires and become tangled therewith, making the work slow and expensive, and frequently at the same time resulting in crossing live wires with one another. By the use of my invention frequent cutting of the wires is avoided, and the opera tion of renewing the wires is greatly facilitated, since the new wire is attached to a section of the old wire and drawn into place by the old section as it is pulled out.

My invention consists, more particularly, in sheaves or rollers, which, being properly mounted, are temporarily placed upon the arms next to the insulators of a wire that is to be removed. The wire is detached from its insulators and placed between the sheaves which serve as guides, and reduce the friction to such an extent that a very long section of wire-say a quarter of a milemay be read ily drawn out and the new section of wire attached to the end of the old at the same time drawn into place.

In the drawings, which are illustrative of my invention, Figure 1 is a view showing my device mounted on the crossarn1s of two telegraph-poles with the wire in position as it is being drawn through the rollers. Fig. 2 is a full-sized side elevation of my telegraph-wire carrier. Fig. 3 is a similar view showing the adjustability of the pin of the upper roller or sheave, which is raised in position to admit the wire into the groove or space between the sheaves. Fig. 4 is a rear view of the carrier. Fig. 5 is a detail view of a shaft, showing the manner of mounting the rollers upon the standard.

Like parts are indicated by similar letters of reference in the different figures.

As shown in Figs. 2, 3, and 4c, the standard a. is provided with a gimlet-screw that maybe readily turned into the cross-arm. The pins of the sheaves (for detail see Fig. 5) are provided with shoulders 7), corresponding to the holes in the standard, so that they may he rigidly secured to the standard. One of the pins, preferably the upper one, 0, is secured in place by a thumb-nut, so that it may be readily loosened and brought to the position shown in Fig. 3, so as to permit the wire to pass between the two sheaves.

In the operation of my device the line-man goes along from pole to pole, inserts a carrier next to each insulator of the line to be re newed, and, detaching the wire, places it between the two sheaves, as shown more clearly in Fig. 1. The new wire is then attached to one end of the section of old wire, and by applying power at the other end of the section the old wire, guided between the sheaves at the diiferent poles, is readily drawn out, while at the same time the new wire drawn into place. The line-man then goes along from pole to pole, taking the new wire out of the carriers and attaching it in the usual way to the insulators. The carriers are removed from the cross-arms as the wire is attached to the insulators, and are then ready to be used again.

I have described the form of my carrier which I consider the best for actual service. It is evident, how ver, that this might be changed in different ways without departing from my invention, the essential features of which consist in a device which maybe readily attached to the cross-arm of a telegraphpole and serve as a guide for the wires. The sheaves may be mounted upon their pins in any manner that will permit of their being readily separated or adjusted to permit the Wire to enter the space formed by the opposing grooves.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination, With the cross-arms of telegraph-poles, of temporary carriers provided each with adjustable sheaves mounted thereon, one at each cross-arm, and the Wire placed in said carriers between the sheaves, as described, whereby an old Wire may be readily drawn out and at the same time the new Wire attached thereto drawn into place in long sections, as described.

2. The combinationgvith the standard and means for readily attaching the same to the cross-arms, of the sheaves mounted on their pins, respectively, said sheaves being placed opposite one another, so that their grooves will form a space for holding the wire, one of said pins being readily adj ustable to separate the sheaves to admit or take out the Wire, substantially as described.

3. The combination,with the standard provided Witha point for insertion in the cross, of the grooved Wheels mounted upon pins secured to the standard, said sheaves being placed so as to form a space between them for the wire, said sheaves being readily adjustable to permit the Wire to be taken out or placed between the rollers, substantially as described.

In Witness whereof I hereunto subscribe my name this 21st day of November, A. D. 1887.

ROBERT S. DONALDSON.

Witnesses:

WM. G. STEWART, SAML. H. MOORE.

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