US931397A - Trolley-hanger. - Google Patents

Description

G. B; DUSINBERRE.

Patented Aug. 17, 1909.

INVENTOR WITNESSES:

UNITED snares PATENT curios.

GEORGE E. DUSINBERRE, OF CLEVELAND, OHIO, ASSIGNOR TO WESTINGHOUSE ELECTRIC &

MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.

TROLLEY-HANGER.

Specification of Letters latent.

Patented Au 17, 1909.

Application filed September 9/1907. Serial No. 391,879.

To all whom it may concern:

Be it known that I, GEORGE B. BUSIN- DEERE, a citizen of the United States, residing in Cleveland, in the State of Ohio, have invented a certain new and useful Trolley- Hanger, of which the following is a specification,

My invention relates to electric railway and other trolleys, and particularly to clamps for attaching a wire to the supporting structure.

T he objects of the invention are to provide a strong andsecure grip upon the wire, to simplify and cheapen the construction, and particularly to provide an improved fulcrum grip having several gripping jaws.

--1n the accompanying drawing the invention is illustrated in. two forms, as adapted to use on the so-called catenary construction of electric trolley lines.

Figure l is a perspective view of a preferred form of the hanger; Fig. 2 is a side elevation and Fig. 3 a vertical cross-section of a modified form to be made of forgings.

Heretofore it has been customary to attach a trolley. wire to a superstructure by clamping devices in which the fulcrum is on the hanging rod, and the jaws of the clamp are held together by bolts or screws; but such structures are diflicult to secure, and always liable to work loose from the jarring.

In the form of my invention shown in Fig. 1, I illustrate the jaws of the clamp made of two identically constructed plates stamped out, the device being adapted to hold a trolley wire 5 which has, on each side, a groove (5. The plates 7 are provided with interlocking teeth 8, each of which fits snugly under and is fulcrumed upon the bottom of the notch 9 in the opposite plate 7.

The upwardly extei'iding part of the plate 7 is preferably provided with outwardly flared edges or flanges l0 and suitable recesses a i-d apertures to engage the head of a hanger rod 11. The flanges 10 are drawn toward each other and are secured by a pair of clips 12 which may be driven'upon the plates 7, as shown. For additional security, the plates 7 may be provided with 'tongues 13 which may be bent outward beyond the outer edges of the clips 12 after they are put in place. It will be observed that the jaws of the clamp are fulcrumed very close to the wire and that the backward extensions form long levers by which the aws are very firmly clamped together. The places between the teeth 8 being used as pivoting fulcrums, the plates 7 require no special hinge or fulcrum and may be made exactly alike. At the same time, the fastening means secures the clamp to the hanger rod, and it will be evident that the device cannot possibly work loose. Each plate serves for either side, and, being all alike'and of plate metal, all are cheaply manufactured.

In Figs. 2 and 3, I have shown a modified form in which the backward extension of the jaw-s 8 are fulcrumed on each other at 9, as before. In this form, however, the lever arms 7 are provided with tapered threads l-Il, upon which a nut 16 may be secured to clamp the jaws against the head of a hanger rod 11. The fulcrum points 9 are thus brought very, close to the gripping point 8 of the jaws, giving very secure fastening upon the .trolley wire 5, as will be evident. Of course, various designs of fastening means for the backwardly extending portions of the gripping jaws may be used, but, in all forms, the jaws; themselves should be interlacing teeth fulcrumed upon each other. The variousadvantages of the device will be readily apparent to those familiar with the art.

I claim as my invention:

1. A trolley wire hanger comprising a pair of identically, constructed plates of stamped plate metal having interlacing jaw teeth and fulcrumed upon each other at the bases of said teeth, and single-piece clamp ing devices which engage the exterior upper edges of said plates.

2. A trolley wire hanger comprising two plates having divergent sides and provided with interlacing jaw teeth and fulcrumed upon each otherat the bases of said teeth, a hanger rod having a head located between said plates, and means engaging the upper external portions of said plates to effect a clamping action between the jaw teeth and to lock the hanger rod in position.

3. A trolley wire hanger comprising two identically constructed jaw members having interlacing teeth and fulcrumed upon each other at the bases of said teeth, a hanger rod having a head located between said jaw members, and a clamping device which makes external engagement with the upper portions of said members.

4. A trolley wire clamp comprising two of the plates and clamp the jaw teeth in enplates provided with interlacing'jmv teeth I per edges of said members, and means for 10 and fulcrumed upon each other at the bases 5 preventing accidental removal of said clips. of said teeth and having divergent sides, and l In Witness whereof,I have hereunto signed sliding clips which embrace the upper edges my name in the presence of the two suhscribed witnesses. gugement with the trolley wire. GEO. B. DUSINBERRE.

A trolley wire olamp comprising two Witnesses: jaw members having interlacing teeth and CHARLES B. FAIRCHILI), Jr.,

- divergentsides, clips which embrace the up- MAY DOTY.

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