US556971A - Insulated support for contact-rails - Google Patents

Description

(No Model.)

A. HANSON 8v J. R. CHAPMAN. INSULATED SUPPORT FOR CONTACT RAILS 310165697111 J Patented Mar. 24, 1896.

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UNITED STATES AUGUSTUS HANSON AND .lAll'IES RUSSELL CHAPMAN, OF CHIC-AGO, ILLINOIS.

INSULATED SUPPORT FOR CONTACT-RAILS.

SPECIFICATION forming part of Letters Patent No. 556,971, dated March 24, 1896.

. Application filed October 30, 1895. Serial No. 567,370. (No model.)

To all whom it may concern.-

Be it known that we, AUGUSTUS HANSON and Janus RUssnLL CHAPMAN, citizens of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvem ent in Insulated Supports for Contact-Rails, (Case No. 1,) of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

Our invention relates to an insulated stand or support for carrying the contact or third rail of an electric railroad, the object of our invention being to provide a support of rigid construction whereby the contact-rail, which is usually of considerable weight and must stand a considerable pressure from the collecting device, may be rigidly supported in position, and, furthermore, to provide means for thoroughly insulating the contact-rail.

In accordance with our invention a metallic base or standard is provided, upon which is mounted a metallic supportfor the rail, the rail-support being insulated from the standard, whereby the rail is insulated from the portions of the railway structure upon which the standard is mounted. In the preferred form of our invention a pin or bolt provided with a surface of insulating material, such as retna, collophite, or the like, is mounted upon the base or standard, and the rail-support is mounted upon the upper end of the insulated pin. The rail-support is provided at the lower end with a petticoat, which prevents water from dripping from the rail-support onto the insulating-surface, and the insulation being made of a material which presents a hard and smooth surface the accumulation of moisture and dirt upon its surface, which would lower the surface resistance, is prevented. The insulating pin or bolt is preferably formed with a thread at its lower end, whereby it may be screwed into the base or standard, while at the upper end it is provided with a head molded from insulating material, the head carrying screw-threads adapted to engage corresponding threads provided upon the rail-support. After the insulated pin has been secured to the rail-support we preferably pour molten soft metal or sulphur into the joint between the insulated pin and the rail-support to thus securely lock the two together. Upon the face of the rail-support lugs are provided, adapted to engage the flange of the contact-rail and thus maintain the rail against lateral movement. The lugs are preferably cut away at an angle, so that the rail may be placed upon the railsupport with the latter in a slightly-rotated position, after which the support may be rotated to bring the lugs in engagement with the flange, the employment of bolts for securing the rail to the rail-support being thus obviated. On one side of the rail-support a vertical slot or channel is provided in which a key or wedge may be inserted. Guardplanks are secured to the keys, the upper edges of the guard-planks extending above the top of the rail when the planks are placed in position by the insertion of the keys or wedges into the slots or channels provided therefor. The guard-planks may be readily removed at any time by raising the same to withdraw the keys from the slots. A slot may thus be provided upon each side of the rail-support, whereby a guard-plank may be supported upon each side of the contact-rail; but in elevated structures as usually constructed a guard-beam extends along one side of the track, upon which one of the guard planks may be mounted by means of brackets. When this construction is present it is necessary to provide means for supporting only one of the guard-planks upon the railsupport.

lVe will describe our invention in particular by reference to the accompanying drawings, in which Figure 1 is a view of a rail-support embodying our invention the rail and the guardplanks being shown in section. Fig. 2 is a plan View of the support. Fig. 3 is a sectional view thereof.

Like letters refer to like parts in the several figures.

The support comprises a base or standard a, which may be mounted upon the ties or upon other parts of the structure through the agency of bolts o a, passing through a flange provided upon the standard. To the upper end of the standard is screwed a metallic pin or bolt b, the bolt being provided with a shoulder 5, adapted to rest against the upper falling upon the insulated surface of the bolt or pin 1). The insulating material presenting a smooth and hard surface, there is little tend ency for moisture and dirt to accumulate upon the surface and thus lessen the surface resistance. The upper face of the rail-support 0 carries lugs c 0 the inwardly-projecting ends of whichare adapted to engagethe position. thelugs c are cutaway at an angle, whereby flange of the rail and maintain the same in As shown more clearly in Fig. 2,:

when the support is angularly-rotated rela-;' tivelyto .therail the flange of the rail may be inserted between the '1ugs,'when by the rotation of the support the lugs'may be caused to engage theupper faces of'thefiange to lockf the rail in position.

Upon the side of the rail-support are provided projections oreX-E tensions 0 0 in which channels 0 0 areprovidedifor the reception of a key or'wedge 61,;

to which a guard-plank d is secured by means of screws-cl (1 The upper edge of the guard-i plank extends above the top of the contact,

rail to thus guard against objects comingin; contact with the contact-rail. The guard-f plank 61 may be readily removed when de-g from the slot 0 sired by withdrawing the keys or wedges d Guard-plank e is mounted i upon brackets e, which are secured to thef guard-beam f by bolts or. screws 6 Having described our invention, what we; claim as new, anddesire-to secure by Letters;

Patent, is

1. In an insulated support for contact-rails,

the combination with a metallic base or standard, of a metallic pin provided with screw-1 threads at the lower end adapted to engagea tapped hole in said base or standard andwith a shoulder adapted to rest against the top of said stand ard, said pin being provided with a 1ayer,of 'hard insulating material molded thereon to render said pin insulating, said layer of -insulating material being enlarged at the upper end to form; a head, threads be-I ing formed upon said liead,.and a metallic rail-support provided upon the under side with asoeket for the reception of said thread ed head, said socket being provided with screw threads to receive and engage the threads provided upon the enlarged head of the pin, said rail-support being provided with a petticoat surrounding saidsocket,-substantially as described.

2. In an insulating-supportfor contactrails. the combination with a metallic base or standard, of a metallic pin secured at the lower end to said standard and occupying a vertical position, said metallic pin being provided throughout its length with a layer of hard insulatin g material molded thereon, threads be- I ing formed atthe upper end, and ametallic rail-support having a threaded socket to receive the threaded end of saidinsulating-pin.

:said rail-support carrying a petticoat surrounding said socket, whereby the railsup- "port is insulated from the base or standard and the hard insulating-surface of thepin preventssurface leakage, substantially as described.

3. In an insulated supportfor contact-rails.

the combination with a base or standard, of a rail-support mounted thereonand insulated therefrom, said rail-support being provided uwithlugs adapted to engage the flange of the .rail, and said lugsbeing cut away at an angle :to permit'the placing of :the rail in position when the support is angularly rotated; substantially as described.

4. The combination with insulated supports, comprising eacha standard or base and a rail-support mounted thereon and insulated therefrom, of guard-planks carrying keys or wedges, and vertial slots provided upon said rail-supports for the-reception of said keys or'wedges; substantially as described.

5. In an insulated support for contact-rails,

the combination with the base or standard a. 'of theinsulated bolt or pin 1), provided with .an insulating-surface and a screw-threaded head, and the-rail-support c,,carryin g the pettiooat c, lugs c c and-the vertical slot 0 substantially as described.

In witnessiwhereof we hereunto subscribe ournamesthis 26th dayof October, A. D. 1895.

AUGUSTUS "HANSON. JAMES RUSSELL :CHAPMAN.

\Vitnesses:

G. E. ENGSTROM, \V. :CLYDE. JoNEs.

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