US472596A

US472596A - Trolley-wire clamp

Info

Publication number: US472596A
Authority: US
Publication date: 1892-04-12
Anticipated expiration: 1909-04-12

Description

(No Model.) 2 SheetsSh eet 1.-

M. M. WOOD. TROLLEY WIRE'GL'AMP.

No. 472,596. Patented Apr. 12, 1892.

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(No man 2 Sheets-Sheet 2.

WOOD.) TROLLEY WIRE CLAMP. No. 472,596. I Patented Apr. 12,1892.-

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UNITED STATES PATENT OFFICE.

MONTRAVILLE M. WOOD, OF OHICAGO,ILLINOIS.

-TROLLEY-Wl RE CLAM P.

SPECIFICATION forming part of Letters Patent No. 472,596, tlated April 12, 1892.

Application filed May 14, 1891. Serial No. 392,683- (No model.)

To all whom it may concern:

Be it known that I, MONTRAVILLE M. W001), a citizen of the United States, residing at Ohicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Trolley-Wire Clamp Devices, of which the following is a full, clear, and exact specification.

My invention relates to devices for supporting trolley-wires used in connection with elec trical railways, and has for its object to provide convenient means for thus holding and grasping the conductor or trolley wires. It is illustrated in the accompanying drawings, wherein Figure 1 is a side View of the device in position. Fig. 2 is a detail part-sectional View. Fig. 3 is a detail showing the jaws of the clamp extended. Fig. 4 is a side view of the device where the two parts are connected by a rivet or pin associated together in the manner of shears. Fig. 5 is an end View of the same.

Like parts are indicated by the same letters v in all figures.

A is the trolley or conductor wire, which is to be grasped and supported by the clamp.

' B is the clamp connection or support, which is to be of insulating material or connected with an insulator, from which the supportingwire or other supporting device leads. In this manner an insulated support is provided for the wire A. The clamp proper is composed of the two parts 0 and D, provided, respectively, with the screw-threaded upper portion 0 D, the clamping-jaws 0 D and the engaging hinge portions 0 D WVhen the two jaws are together and the wire is being clamped, the screw-threaded portions O D engage and register, so as to form together a single screw-threaded end, which is adapted to be received into any suitable connecting or supporting part for the clamp. The jaws D O are grooved in opposition to each other, so as to hold between them the conductor to be supported. The portion 0 of the clamp is composed of the shank proper with the jaw C and the hinged part D which consists of two connecting parts from the shankto the jaw, with an aperture between them, substantially as shown. 7 The part D consists of the jaw and shank and a single connected part,

which passes through the aperture between the portions 0 D The part 0 is notched, as shown in Fig. 2, to receive the hinged portion of the part D so that the two parts of the clamp are thus hinged together, so as to move one upon the other to permit the jaws to be distended.

The construction here shown is believed by me to be the best, or at least in substantially the best, form for such clamp; but I recognize the fact that the device might be considerably altered without departing from the spirit of myinvention. A pivotal pin could of course be used to connect the two portions of the clamp together, and in some instances it might be thought desirable, or for some purposes it might be thought better to have the two clamping portions lie on opposite sides from each other instead of passing through an aperture to each other. This modification is shown in Figs. 4 and 5, where the pin connecting the two parts is indicated by the letter S. The other parts are lettered as in the other figures.

The use and operation of my invention are so obvious as to require little explanation. The wire at the point where it is to be supported is clamped between the two jaws, where it is brought firmly into position, as indicated in Fig. 3, and the upper portion screw-threaded into the connecting part which is to be supported, so as to hold or secure the trolley-wire. This connection might be made, of course, in Various ways, and various connecting devices other than the screw-thread may be employed. When the slack is being taken up in the wire, it is only necessary to loosen the clamp and slide the wire through it. The upper screwthreaded portions O D are tapered, so as to make a tapering end, and thus by screwing the connection-piece a few turns backward upon the clamp its jaws will be freed sutticiently to permit the wire to be moved or to be passed along through the jaws without otherwise disturbing the parts or materially releasing the clamp from its connection. This is an important feature of my device.

I claim 1. In a trolley-wire clamp, the combination of two independent clamping portions pivotally supported one upon the other and provided at one extremity with coacting clamping-jaws and at the other with means for securing the clamp to its support and adjusting the jaws with reference to each other.

2. In a trolley-wire clam p, the combination of two independent clamping portions pivotaily supported one upon the other and provided at one extremity with ooacting clamping-jaws and provided atthe other with means for securing, the ciainp to its support, said means consisting of a tapering connection on the clamp, with a receiving part on the clampsupport whereby the jaws may be permitted to open to a greater or less degree. according to the depth to which the clamp is received into its support.

3. In a support for trolley-wires, the combi-