US1069800A - Hanger for trolley-wires. - Google Patents

Description

. W. A. MOGALLUM- HANGER FOR TROLLEY WIRES.

APPLICATION FILED MAY 19, 1910.

1,069,800, Patented Aug. 12, 1913.

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ATTORNEY.

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WILLIAM A. MCCALLUM, OF CINCINNATI, OHIO.

HANGER FOR TROLLEY-WIRES.

Application filed May 19, 1910.

Specification of Letters Patent.

Patented Aug. 12,1913.

Serial No. 562,150.

To all whom 2'25 may concern Be it known that I, lVrLLmM A. MCCAL- min, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented new and useful Improvements in Hangers for Trolleyires, of which the following is a specification.

lily invention relates to hangers for suspending the trolley wire of an electric railway from its fixed supports; and more particularly to the class of hangers employed in connection with a messenger cable, consisting essentially of a clip or fastening to engage the messenger cable, a rod hung from the same, and an ear suspended from the rod and engaging the trolley wire.

The method of suspension by hangers from a messenger cable is used more generally on inter-urban railways where higher speeds are used, than on ordinary street railways, and it is desirable in order to secure smooth running and perfect conduction to equalize as far as possible the yielding resistance of the trolley wire under the upward thrust of the traveling conductor.

The weight of the hanger at suspension points, together with its fixity or rigidty of connection with the messenger cable, tends to concentrate and magnify the resistance at the hanger connections which at accelerated speeds of the traveling conductor often produces hammering and jumping at such points with consequent sparking and not infrequent injuries.

1 have heretofore filed an application for Letters Patent now pending for issue as Serial. Number @8999, which. embodied certain specified improvements in this class of hangers; and the present invention is in the nature of an improvement upon said former invention designed to remedy the disadvantages herein specified; and it consists in a hanger, embodying a clip or fastening adapted to engage the messenger cable, and extended downward as a tubular shank, a rod or stem, engaging the trolley ear and extending upward into the tubular shank, and provided with a T-head resting at the bottoms of opposite vertical slots in the shank-whereby the stem is enabled to rise under the lifting action of the traveling conductor, independently of the messenger cable.

My invention is illustrated in the drawlngs accompanying and forming part of this specification, in whicln Figure l is an elevation of my improved hanger complete across the line of the messenger cable; and Fig. 2 is an elevation of the same at right angles with the former view, that is: on the line of the messenger cable.

Referring now to the drawings, A designates the clip or fastening by which the hanger is suspended on the messenger cable, and, as shown herein, consists of two sister hooks, a, a, arranged side by side as upper integral extensions of a tubular shank, a which, preferably, is approximately circular at the base-of the hooks a, but is thence downward increasingly oval as indicated, to allow an oscillating or pendulous swing of the link B, presently to be described.

The tubular shank of the clip or fastenin A, is longitudinally slotted as at a for a limited distance at opposite sides as shown in Fig. 2 to receive the opposite projections of a T-head Z) of the rod or link B of the hanger, which link passes upward into the tubular opening of the shank and is normally held suspended below by the lateral projections of the T-head 1) into the slots, through the wall of the tubular shank, resting upon the bottom of the slots.

The structure is substantially the same as shown in my said former application, excepting that the shank is extended down ward and provided with the slots o The link B, while normally, as shown, suspended by its T-head b resting at the bottom of the slots, is thus permitted to be lifted within the tubular inclosure of the shank a until its T-head strikes the top of the slots a and the oval enlargement of the shank before referred to is to permit the link B a limited capacity to swing as a pendulum upon its T-head as a pivot without possibility of disengagement from the tubular shank.

While I have shown the hanger as comprising a sister-hook engagement with the messenger cable, it will be manifest that any other mode of fastening will serve the purpose, provided it permits a limited vertical movement of the link B. I do not, therefore, confine my claim to these details of construction.

The trolley wire 0 is shown suspended by an ear D secured upon the lower end of the hanger. The form of these are also details immaterial to my present invention.

The mode of operation is as follows: In the passage of the traveling conduct-or held to contact with the trolley wire by constant upward pressure of the spring lifting or wave motion thus created is accommodated by the upward lift of the link B in the slots a As the conductor passes by the link again settles to its former position shown in the drawings. The oscillating or pendulous movement of the link is inclicated within exaggerated limits by dotted lines in Fig. 2.

I claim as my invention and desire to secure by Letters Patent of the United States 1. A trolley wire hanger consisting of a tubular shank provided at its upper end with means for engagement with the mestrolley ear in rigid inter-engagement with itself.

2. In a trolley wire hanger a tubular shank provided at its upper end with means for engaging a messenger cable or other support, and with elongated slots at opposite sides of the shank in direction of its axis as and for the purpose set forth.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

WILLIAM A. MOCALLUM.

Witnesses:

Lnwis M. Hosea, l/VALTER A. KNIGHT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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