US1093235A - Trolley-wire-feed-tap insulator. - Google Patents

Description

E. L. ALVORD.

TROLL-BY WIRE FEED TAP INSULATOR.

APPLICATION FILED AUG. 27, 1913.

Patented Apr. 14, 1914.

UNIT D 'STATESPATENT onn on.

ELLIOT LANDON ALVORD, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE JOHNS- ]?RATT COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF CONNECTICUT.

TROLLEY-WIBE-FEED-TAP INS-ULATOR.

Specification of Letters Patent.

Application filed August 27, 1913. Serial No. 786,853.

To all whom it may concern.-

Be it known that I, ELLIOT L. ALVORD, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented a new and useful Improvement in Trolley-Wire- Feed-Tap Insulators, of which the following is a specification.

This invention relates to those insulators that are utilized to suspend tap wires which lead from feed wires to trolley wires, more particularly those trolley wires which are suspended from cross arms or brackets. It is considered very desirable'tdhave a feed tap in one piece and to hold it near the trolley wire so that it will not become broken or disconnected, ordislodged from the insulator.

The object of the invention is to provide for this purpose an insulator and hanger so.

constructed that the insulator and the tap wire will not drop out of the hanger should the clamping parts of the hanger become loosened or dislocated.

Figure 1 of the accompanying drawings is an illustrative View showing the use of a feed tap insulator which embodies this invention. Fig. 2 shows a side view on larger scale of the insulator and its hanger, and Fig. 3 shows a front view of the same.

In the organization illustrated the bracket 1 is attached to the pole 2 in the usual manner and the feed wire 3 is'strung on insular torst that are mounted on the cross arms 5 as is customary. The tap wire 6 leads from the feed wire to an insulator 7 which is fastened to the pole, and from that insulator to an insulator 8 'which is fastened to the depending outer end of the bracket. The trolley wire 9 is supported by the usual hanger 10 that is connected with the feed tap wire.

The feed tap wire is supported adjacent to the trolley wire by the hanger 11 which is made of metal such for instance as galvanized iron or the like. The upper end of this hanger is provided with a split clamp 12 that is adapted to embrace the bracket. The free ends of the clamp are drawn together for binding the clamp on the bracket and securing the hanger in place, by means of a bolt 13 and nut 14. The hanger at the lower end has a hook 15 which opens upwardly on one side, and in this hook is supported a bushing 16 of suitable insulation. The feed tap wire is run through this bushing which is flanged at its ends so that it is held against sidewise movement out of the hook. When the bushing and wire are in place the insulaplate is drawn in such manner as to bind the insulating bushing and hold it in place.

With this simple construction the insulator is held firmly in place so as to securely support the feed tap wire. Should the screw work loose and the clamp plate drop down or be knocked out of place, the insulator will still remain in position'in the hanger and support the feed tap wire. This results from the hook shaped lower end of the hanger, and it is of advantage in that if the bushing should drop from the hanger it is liable to slip along the feed tap wire and leave it unprotected. With such a condition the oscillations of the trolley wire due to the passing of a trolley wheel will cause the insulation of the feed tap to become worn and when the tap wire contacts with the hanger a dangerous short-circuit is liable to result. With the arrangement above described this -cannot happen for the bushing and tap wire are held in place andcannot drop down, even should the clamp plate become loosened and dislocated.

The invention claimed is:

1. A feed tap insulator. having a metallic hanger with a clamp at its upper end and a supporting hook at its lower end, an insulating bushing supported by the hook, said bushing having flanges at its ends which by engagement with the walls of the hook prevent the longitudinal movement of the bushing, and a clamp plate removably connected with the hook for binding and seper end extending into an opening in the curing said insulator in place in the hook. lower end of the hanger and having its lower 2. A feed tap insulator consisting of a end fastened to the outer end of said hook. 110 hanger, a clamp at the upper end of the. ELLIOT LANDON ALVORD. 5 hanger, a hook at ;the lower end of the Witnesses:

' hanger, an insulator supported by the hook, JOSEPHINE M. STREMPFER,

anda clamp for the insulator having its up- HARRY R. WILLIAMS.

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