US1336558A

US1336558A - Anti-abrasion cable-support

Info

Publication number: US1336558A
Application number: US264259A
Authority: US
Inventors: Gherardi Bancroft
Original assignee: American Telephone and Telegraph Co Inc
Current assignee: AT&T Corp
Priority date: 1918-11-26
Filing date: 1918-11-26
Publication date: 1920-04-13
Anticipated expiration: 1937-04-13

Description

B. GHERARDI.

ANTI-ABRASION CABLE SUPPORT.

APPLICATION FILED NOV-26,1918.

Patented Apr. 13, 1920.

ATTORNEY UNITED STATES PATENT OFFICE.

BANGROFT GHERARDI, OF BAYI-IEAD, NEW JERSEY, ASSIGNOE T0 AMERICAN TELE- PHONE AND TELEGRAPH (JGMPANY,

A CORPORATION OF NEW YORK;

.ANTI-ABRASION CABLE-SUPPORT.

Application filed Novem ier 25, 15 18.

To all whom it may concern lle it known that I, BA onor-T GHERARDI, residing at Bayhead, in the county of Ocean and State of New Jersey, have invented certain Improvements in Anti-Abrasion Cable-Supports, of which the following is a specification.

This invention relates to supporting devices, and more particularly to means for suspending electrical transmission, cables from a messenger strand which is firmly attachei'l to poles spaced at definite intervals along a transmission line.

For some time past it has been customary to support aerial telephone, telegraph or power transmission cables by means oi. rings attached to the messenger strand, which in turn supported by and securely attached to poles. These rings vary widely in their term and mode of attachment to the messenger strand, but, in general, they have been designed so as to grip the strand tightly and thereby avoid, in so far as practicable, any movement along the strand or my lateral moven'ientabout the strand as an axis. After the rings have been planed upon the strand, the cable to be suppo' ed is drawn through successive ring any suitable means, such as a rope,

which has been previously threaded through the rings. lt has been observed that cables suspended from messenger strands by means of rings have, after varying periods of time, shown signs of wear, such as cutting and cracking where supported by the first 'tew rings on each side of the poles to which the messen er s znd is attached.

A careful investigation of the cause oi? this t ouble leads to the conclusion that the cutting or abrasion oi the sheath by the aused. primarily by the swinging "mating oi the cable, \vhi 'h induces a lateral n'iovement of tl'ie cable in the ing near the poles.

a result of this n'iotioin the cable sheath rubs against the rings and is gradually cut away by the more or less rough surtace of the rings. This, of course. permits the entrance of moisture into the cable and circuit troubles result.

My invention consists in a which is capable of attachment to the s and in a manner which will prevent longitudinal movement along the strand, and is also :Free to swing laterally with the lat-era move- Spccification of Letters Eatent.

Patented Apr. 13, 1920.

Serial No. 264,259.

ment of the cable, thereby substantially a voiding any relative movement of the cable and the ring, and' consequently practically eliminating the abrasive etiects heretofore experienced wit-h rings that are rigidly attached to the messenger strand. 7

My invention will be best understood from the attached drawing in which 1 represents the messenger st-rand, and 2 represents the cable support consisting of a yoke 23, having its ends adapted to tightly grip the messenger strand, and a suspended ring 4, which is connected with and adapted to rotate about the member 7 of the yoke 3. T he cable 5 shown in the drawing in dotted lines, rests within the suspended ring l upon the upper surfaces (3 ot the arms of this ring. The yoke is rigidly "fastened to the strand in a well known manner so that the ring will not be moved longitudinally along the strand when the cable is being drawn through the ring or at any other time. The ring a is adapted to swing freely about the bar 7 of the yoke It has been found desirable in practice to attach one end of the said support to the yoke 3 by a closed loop 8 in the form of an eye and to leave the other end or loop 9 oi"- the said support open, as shown by the drawing, in order that the ring may be placed around cables previously installed, whenever it is desired to substitute this type of ring for the old rigid type. lVh-ei'i the ring is in position, the end 9 of the ring may be closed as shown by the dotted lines, and slippa e from the yoke is thereby avoided, if the rings are placed prior to the ii v:tallation of the cable both ends of the ring l may be attached to the yoke 3 in the manner shown at R in the drawing.

it will be seen, therefore, that by means of this it ontion the ring 4 lI QlflQ adapted "icswin Freely, wi l follow the lateral movement ot' the cable 5, which by its own weight adheres to the supporting surfaces 6 of the arms of the ring. Consequently, there is substantially no relative movement between the cable and the supporting portion of the ring, and as a result thereof, the abrasive effect is negligible.

rilthough this invention has been shown as embodied in a particular form, it is to be understood that it is capable of embodiment in many and widely varied forms Without departing from the spirit of the invention, as defined in the appended claims.

Having thus described the invention, what I claim and desire to secure by Letters Patent is:

1. A cable supporting device, adapted to be suspended from a messenger strand, having a yoke provided with oppositely facing hooks adapted for rigid attachment to said strand, and a cable supporting ring pro vided with oppositely facing loops r'or rotatably suspending said ring from the yoke.

2. A cable supporting device formed from two pieces of spring wire comprising a yoke provided with a bar having at its ends upwardly extending and oppositely facing hooks adapted to engage a messenger wire, and a cable ring constituting a support for a cable, said cable ring having a loop at either of its ends whereby it is adapted to be rotatably suspended from said yoke.

3. A cable supporting device formed from two pieces of spring wire, including a yoke comprising a bar having at its ends upwardly extending and oppositely facing hooks adapted to engage a messenger wire, and a cable ring constituting a support for a cable, said cable ring having a loop at either of its ends, the loops being hinged to said bar in proximity to each of its upwardly extending hooks, whereby it adapted to be rotatably suspended from said yoke.

In testimony whereof, I have signed my name to this specification this twenty-fifth day of November, 1918.

BANCROFT GHERARDI.