US1138701A - Overhead electric-line construction. - Google Patents

Description

T. VARNEY.

OVERHEAD ELECTRIC LINE CONSTRUCTION.

APPLICATION FILED APR. 5, 1907.

Patented May 11, 1915.

2 SHEETS-SHEET 1.

Trllllllulll INVENTOR WITNESSES:

ATTORNEY THE NORRIS PETERS 60., FHOTO-LITHQ, WASHINGTON. D. C.

T. VARNEY.

OVERHEAD ELECTRIC LINE CONSTRUCTION.

APPLICATION FILED APR. 5. 1901.

1,1 38,701 Patented May 11, 1915.

2 SHEETS-SHEET 2.

WITNESSES: INVENTOR 3M M W agfge ATTdRNEY THE NORRIS PETERS C0,. FHOTO-LITHC'.. WASHING TON. D.

"UJE TITED STATES OFFICE.

THEODORE VARNEY, OE PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.

OVERHEAD ELECTRIC-LINE CONSTRUCTION.

Application filed April 5, 1907.

To all whom it may concern:

Be it known that I, THEODORE VARNEY, a citizen of the United States, and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Overhead Electric-Line Construction, of which the following is a specification.

My invention relates to apparatus for bracing and insulating over-head line conductors and it has for its object to provide simple and effective means for supporting electric conductors, particularly against lateral movement, that shall be adapted for use with the relatively high as well as low-voltage conductors. My supporting device is particularly useful in connection with a catenary form of electric railway trolley line structure comprising one or more messenger Wires or cables from which the trolley conductor is suspended.

My invention is illustrated in the accompanying drawings in which Figure l is a side'elevation of a trolley pole and cross arm provided with a bracing device constructed in accordance therewith. Figs. 2, 3, and t are detail views of the structure shown in Fig. 1.

Referring to the drawings, a substantially horizontal arm 1 is attached, at its inner end, to a pole 2 and is supported by means of a tie-rod 3 which connects an end bracket 4 mounted on the arm 1 to the pole 2. A trolley conductor 5 is suspended from a messenger cable 6 by means of hangers 6 and the messenger cable is supported by an insulator 7 that is adjustably mounted on the arm 1. The insulator 7 may be of a well known petticoat type and is mounted on a bracket or casting 8 which is adjustably clamped to the arm 1 by means of a hook projection 9 and a bolt 10, the inner end of which is bent into the form of a hook so that it acts in conjunction with the projection 9. In order to prevent lateral movement of the trolley conductor 5, a brace 11 is provided which comprises an arm or rod 12, the outer end of which is secured to the trolley conductor by any convenient means, such as a clamp 13, and the inner end of which is secured to a sleeve insulator 14: by means of a two-part collar clamp 15.

The insulator 14: is mounted upon a rod or tube 16 in a well known manner and the ends of this tube are supported by a clevis Specification of Letters Patent.

Patented May 11, 1915.

Serial No. 366,501.

or horse shoe bracket 17 thatis adjustably mounted on the arm 1. The arrangement of parts is such that the center line of the tube 16 is substantially vertical and the insulator 14- is supported entirely below the arm 1. In this way, longitudinal movement of the trolley conductor 5 is permitted, since the insulator 14 and its tube, may be rotatably adjusted. The horse shoe bracket 17 is provided with a pair of hook projections 18 which are held in engagement with the arm 1 by means of bolt hooks 19. Loop bolts 20 may be advantageously employed for securing the tube 16 to the arms of the horse shoe bracket 17, after a suitable adjustment has been effected.

The arm 1, as illustrated in the drawings, is of T-shape in cross section, which is well adapted for use in bracket construction by reason of its high rigidity relative to its weight per unit of length.

Supporting arms of different cross section may be employed, however, if desired and the bracing device of my present invention may be readily adapted for use with various forms of bracket arms and also with such bridge structures as are often employed for supporting trolley conductors for multitrack railway systems.

I claim as my invention:

1. A steadying device for electric line conductors comprising a substantially hori zontal arm, a horse shoe bracket adjustably mounted thereon, an insulator supported by the horse shoe bracket, and an arm or rod interposed between the insulator and the line conductor.

2. A steadying device for electric line conductors comprising a substantially horizontal arm, a bracket adjustably suspended from said arm, a tubular insulator rotatably supported upon the bracket with its axis substantially vertical, and an arm or rod having one end secured to the insulator and its other end connected to the line conductor.

3. A steadying device for electric line conductors comprising a horizontal arm, a horse shoe bracket adjustably mounted thereon, a rod or tube vertically supported by the bracket, an insulator mounted upon the rod or tube, and an arm interposed between the insulator and the line conductor.

4. In an overhead structure for electric railways, the combination with a substantially horizontal arm, a messenger cable supbetween the insulator and the trolley con- 10 ported by, and insulated from, the arm, and ductor.

a trolley conductor suspended from the In testimony whereof, I have hereunto cable, of means for bracing the tro11ey consubscribed my name.

ductor ugalnst lateral movement comprising THEODORE VARNEY.

a horse shoe bracket ZIClJUStZLblY mounted on the arm, a rod or tube vertically sup- Witnesses:

ported by the bracket, an insulator mounted lVEsLnY G. CARR,

upon the rod or tube and an arm interposed BIRNEY Hmns.

G'opies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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