US297708A - Railroad-rail and rail-josnt - Google Patents

Description

(Nb Model.)

J. S. M0LE0D.

RAILBOADRAIL AND RAIL JOINT. 7 N0. 297,708. Patented Apr. 29 1884.

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UNITED STATES PATENT OF ICE.

JOHN s. .MoLEOD, or BOSTON, MASSACHUSETTS.

RAILROAD-RAIL AND RAIL-JOINT.

SPECIFICATION forming part of Letters Patent No. 297,708, dated April 29, 1884.

' Application filed April 23.1w. (No model.)

.Massachnsetts, have invented certain new and useful Improvements in Railroad-Rails and Rail-Joints, of which the following is a specification, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

'My invention relates to a compound rail wherein the tread and base are separate.

The object of my invention is to produce a strong, safe, and durable rail capable of sustaining rough usage and wear, and which will not readily break by the heaving of the track by the effects of frost, or settling of the track as a result of thaws, &c., and which will also permit of the renewal of thetread or wearing part of the rail without moving its flangeor base part.

In the accompanying drawings, Figure 1 shows a View in side elevation of the rail as put together. Fig. 2 is a cross-section of the flange or base part. Fig. 3 is a cross-section through the line :0 as, Fig. 1. Fig. 4. is a plan.

view of two meeting flange or base parts with. the tread-rails inserted, the latter being shown in sectional plan.

Similar letters of reference indicate similar parts in the respective figures.

A is the flange or base part, which may be rolled or constructed of cheap iron or of steel or other suitable material. The part A rests on the ties A, which are intermediate .of or between those ties adjacent to the ends of the rail-sections. The part A is provided with vertical and parallel ribs a, formed on its upper surface and extending lengthwise, and of the desired height to form a recess, a. Each of said ribs is discontinued near one end of the base of the part A, but extends beyond the other end of said part, the intention being to produce the construction shown at the respective ends of Fig. 4.

B is the tread-rail,which is made of steel or other suitable material, the web I of which is.

rolled or otherwise shaped to fit neatly within the recess a of the flange or base part A, the sides of the recess being made smooth to receive it. The tread-rail B is designed to be capable of vertical movement within the recess a. As

shown in Fig. 4, the adjacent or meeting ends of two of the rails B break joints with the vertical ribs a of the parts A, so that in practice a continuous rail with unbroken joints is formed.

Under the rails B is placed a continuous yielding cushion,-c, made of paperor itsequivalent,which eases the rail upon the impact of a moving train, adding greatly to the durability of the rail and to the comfortlof travel. The cushion c,which is preferably made a nonconductor of electricity, may be extended around the web I), and between it and the ad jacent surfaces of the flange or base part A, thus insulating the rail and converting it into a means for electric conduction for signaling or other purposes. The bolt-holes a in the web 1 b are elongated vertically, so that the Weight of the train may be brought directly on the cushion 0 without straining the bolt a. The heads of the bolts are preferably square and tapered, fitting in countersunk holes of corre sponding shape, so as to be flush with the exterior of the rib a,and to allow of the turning of the nut without. revolving the bolt. The bolts 11' should be provided with suitable nutlocks. The boltholes a. should be equidistantsay about two feet apart.

0 is a chair in which the meeting ends of the flange or base partsA and the tread-rails B supported thereby rest, as shown in Figs. 1 and 3. The chair is preferably provided with a lower strengthening-rib, d, which extends longitudinally under the lapped rail-joint made between the parts A and B of the rail. The chair is provided at its respective sides with ribs d tl., each of which has an overlapping flange, d. The flange d of the rib d rests directly upon the bottom flange or base of the part A,while the flange of the rib d clampsa key, d, driven in between the outer edge of the base of the part A and the inner side of the rib d, thereby securing the base part A firmly within the chair. The rib d is made slightly tapering and the key tapered to allow of its being driven.

The construction of the chair and the function of its overlapping flanges d' and key d* are such as to maintain the rail in line and prevent settling or lifting of its ends. I prefer to make the chair long enough to rest on two ties,

chair is made short to rest on one tic only the in which case the rib?) is necessary; but if the rib may be omitted.

My invention admits of the use of a steel tread-rail at less cost than where the entire rail is rolled with the tread and base in one piece, for the flange or base part here used with the tread-rail may be of common and cheap iron, as also may the chair.

The compound rail forming my invention gives, it is believed, a stronger, more levcl,and safer track than can be produced by other descriptions of rail, admitting of a higher rate of speed of trains and less liability to accident by imperfect condition of the track, broken rails, &c. and also of the removal of any tread-rail when worn, and the substitution of anew rail without disturbing the parts secured to the ties.

Having described my invention, I claim 1. Abase-plateforacompoundrailroad-rail, I

having vertical ribs or flanges on its upper face, one of said ribs or flanges being projected be yond and one set back from each of the respective ends of the plate, substantially as and for the purposes set forth.

2. In a compound railroad-rail, a base-plate havin vertical ribs or flanges on its upper face, one of said ribs or flanges being projected beyond and one set back from each of the respeetive ends of the plate, combined with a tread-rail inserted between the ribs or flanges of the base-plate, and having vertically-elongated bolt-holes in its web, and a cushion inserted between the bottom of the tread-rail and the base-plate, substantially as and for the purposes set forth.

J OHN S. MCLEOD.

Vitnesses:

ALBERT I-I. BoUvi's, CHAS. P. GORELY.

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