US320631A - Leo daft - Google Patents

Description

(No Model.)

L. DAPT.

INSULATOR FOR TRACKS.

Patented June 23, 18,85.

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UNITED STATES PATENT OFFICE.

LEO DAFT, OF GREENVILLE, NEW JERSEY.

INSULATOR FOR TRACKS.

SPECIFICATION forming part of Letters Patent No. 320,631, dated June 23, 1885.

Application filed March 9, 1885. (No model.)

I ctZZ whom it may concern.-

Be it known that I, LEO DAF'I, a subject of the Queen of Great Britain, residing at Greenville, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Insulators for Tracks, of which the following is a specification.

My invention relates to rails or conductors for conveying the electric current in electric railways, signaling systems, and the like, and has for its object to improve the insulation of such rails or conductors; and to this end my invention consists in the means for insulating such rails or conductors, as more particularly hereinafter described, whereby the rail is effectually insulated. The insulators are simply and cheaply constructed, and are preserved from the action of the elements and the insulated rails or conductors are especially suited for surface roads or other exposed positions.

Referring to the accompanying drawings, Figure l is a plan view of an insulated rail embodying my invention. Fig. 2 is a transverse section through the rail, showing one form of insulator. Fig. 3 is a similar view, showing another form of insulator.

Upon the sleepers of the track are placed the shoes A, usually made of iron, and secured to the shoes in any suitable manner are the standards B, of some insulating material.

Connected to the standards are the caps 0, having hoods or curtains 0, extending down ward around their sides, to form a protection to the insulating material from the elements.

Upon the upper face of the caps are placed the rails D, and they are secured in position by means of the bolts E entering the cap and having heavy washers F, which bear upon the upwardlyextending projections C of the caps and upon the feet D of the rails D, thus holding the rail securely in position, and at the same time admitting of ready removal, and rendering the work of repairs easy of accomplishment.

The insulators B may be of various forms and materials. In Fig. 2 they are shown as consisting of blocks or standards of insulating material, the lower ends of which are secured to the shoes A by being forced into the (love tail slots and the upper ends fitting into sockets or recesses in the under side of the cap 0, and the cap and standard may be further secured together by some mechanical device, as

the screw G.

In Fig. 3 the standard 13 is shown as being an integral part of the shoe, and the insulating material is placed between the standard and the socket of the cap.

Various other forms of connecting the cap and shoe and insulating them from each other will suggest themselves to those skilled in the art, and I do not limit my invention to any particular construction.

The insulating material may be, as in the case shown in Fig. 2, of wood saturated with resin, pitch, shellac, and the like; or it may be of hard rubber, glass, porcelain, vulcanized fiber, &c.

In Fig. 3 the insulator is shown as of some flexible material, and the standard is screwthreaded and tapered so as to permit the forcing of the flexible insulating material into the corrugated sides of the socket of the cap.

The cap is preferably made of cast iron 5 but it may be of any suitable material, conducting or non-conducting, that is adapted for the purpose for which the rail is intended.

From this construction it will be seen that while the rail is strongly and firmly supported the insulating material is protected from the elements by the hood or curtain of the cap, and the entrance of moisture is prevented,

thereby insuring a good insulation of the rails.

\Vhat I claim is- 1. In an insulator for electricrailway rails, the combination, with a shoe, of a curtained cap adapted to support, and having means for securing the rail thereto, and insulating material interposed between the shoe and cap,

, substantially as described.

2. In an insulator for electricrailway rails,

the combination, with a shoe, of an insulating standard supported on the shoe, and a cap having a downwardly-extending hood or ourtain and provided with a socket into which the insulating standard enters, substantially as described.

3. The combination of a shoe having a dovetailed slot, an insulatingstandard secured to the shoe, and a cap secured to the standard and having a hood or curtain and adapted to support the rail upon its upper surface, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LEO DAFT.

Witnesses:

JNo. N. BRUNS, XV. H. J ONES.

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