US766692A - Hanger cut-out for trolley-wires. - Google Patents

Description

No. 766,692. PATENTED AUG. 2, 1904. G. HALL.

HANGER GUT-OUT FOR TROLLEY WIRES.

APPLICATION FILED APR. s, 1003.

N0 MODEL.

wifrzesses UNITED STATES Patented August 2, 1904.

PATENT OFFICE.

HANGER CUT-OUT FOR TROLLEY-WIRES.

SPECIFICATION forming part of Letters Patent No. 766,692, dated August 2, 1904.

Application filed April 3, 1903. Serial No. 150,975. (No model.)

To all whom it Duty concern:

Be it known that I, GEORGE HALL, a subject of the King of Great Britain, residing at Manchester, in the county of Lancaster, England, have invented a new and useful Hanger Cut-Out for Trolley-Tires, of which the following is a specification.

Hy invention relates to hanger cut-outs for trolley-wires, and has for its object to provide means whereby the line-wire against which the trolley runs, or cross-wire, when breaking will become instantly void of current between any two wire-ears before the respective wire ends reach the ground, thereby preventing accidents resulting from electric shocks from broken wires and limiting the discontinuance of traffic to the two poles between which the breakage has taken place.

I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure l is a side view, and Figs. 2 and 3 end views, of the line of a trolley electric tramway provided with my improvements. Fig. 4 is a side view, and Figs. 5 and 6 are plans, of my improved wire-ear separate, at a larger scale.

Similar letters referto similarpartsthroughout the several views.

In carrying out my invention, and referring more particularly to Figs. 4 and 5, I hinge to each trolley-wire ear a, longitudinally therewith, an arm 6, to the free end of which I connect the trolley-wire c as may be found most convenient. The said arm has an auxiliary arm (Z reaching over its hinge or pivot 6, thus forming a lever adapted to make and break contact with the trolley-wire ear a. The free end of the arm (Z has a casing fitted with a block f under the influence of a spring 9, (or weight,) which block is adapted to compensate for vibration of the trolley-wire and thus keep the arm (Z always in contact with the trolley-wire ear (6 while the wire is intact.

To enable the making and breaking of the said contact, I thoroughly insulate the hinge between the arm (Z and trolley-wire car a say by the bushes [L and washers 2', made of suitable insulating materialso that when the line is intact (see full lines also Figs. 1 and 2) the current passes from the trolley-wire ear through the auxiliary arm (Z to the other arm Z; and wire 0, connected therewith, while when the wire breaks (see dotted lines) the arm (Z is caused to fall by gravitation (see dotted lines, Fig. 1) and lift its auxiliary arm (Z oil the trolley-wire ear, thereby instantly breaking and thus localizing the current.

If necessary, ordinary or auxiliary cross feed-wires may be equipped, similar to the trolley-wire, with ears furnished with the gravity contact-levers described, as shown in Fig. 3.

In Fig. 6 the gravity contact-levers described are shown applied to an ear of a streetcrossing, as will be readily understood.

What I claim as my invention, and desire to secure by Letters Patent, is-

In a hanger cut-out for trolley-wires, a solid middle portion, a pivotally-insulated lever fulcrumed to each end thereof with its inner end reaching over the said middle portion and having a casing, a slidable block and a spring in the said casing holding the said block and thereby the said inner end normally in contact with the said middle portion, all combined substantially as and for the purpose set forth.

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

GEORGE HALL.

WVitnesses:

ALFRED BossIIARDT, STANLEY E. BRAINALL.

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