US374525A - Turn-table guide - Google Patents

Description

(No Model.)

A. V. DU PONT.

TURN TABLE GUIDE.'

Patented Dheo. 6. v188'7.

l/ 'I i N. PETERS. Photovlilhngmphar. Washington. D. C.

NITED STATES PATENT OFFICE.

ALFRED V. DU PONT, OF LOUISVILLE, KENTUCKY, ASSICNOR TO THE JOHNSON STEEL STREET BAIL COMPANY, OF KENTUCKY.

TURN-TABLE GUIDE.

SPECIFICATION forming part of Letters Patent No. 374,525, dated December 6, 1887.

Application filed May S24, 1887. Serial No. 5239.171. (No model.)

To all whom it may concern: l

Beit known that I, ALFRED V. DU PONT, of Louisville, in the county of Jefferson and State of Kentucky, have invented a new and4 useful Improvement in Turn-Table Guides for Street-Railway Cars, which invention is fully set forth and illustrated in the following specication and accompanying drawings.

v The object of this invention is to provide a turn-table guide with a removable and renewable wearing-surface in the path of maximum travel of the car-wheels thereon, and consequent rnost abraded portion of said guide.

The invention will first be described, and then particularly set forth in the claim.

In the accompanying drawings, Figure l shows a general plan illustrating the invention; Fig. 2, a part section at the line H I of Fig. l; Fig. 3, a part section at the line J K of Fig. l. Fig. 4. shows a side elevation of Fig. l; Fig. 5, a section of track-rail, with which this guide is made to connect.

In said gures the several parts are indicated by letters of reference, as follows:

A,an ordinary steelT-rail; B,an outside plate fitting against said rail and flush with the top of its head throughout its whole length; C, an inside plate iiush with the head of rail A up to the line H I, from which it slopes downward from the guard E to the head of the rail A, until it drops to and forms a groove of normal depth at the outgoing end or throat N of the guide. The bolts m m pass through the web of the T-rail A, and also through two webs on the plates B C, which tit against the web of said rail and firmly connect all the parts together. The bottom lianges, F F, form a base for the whole structure. This base is re-enforced by the vertical bracesff. The whole surface of the outside plate, B, is flush; but on the inside plate is the raised guard E, ,which guides the wheels of the. car intothe proper path on the rails through the throat N. D D are two projections, which, whenthe structure is complete, forni a pocketto take in and hold the connecting-rails to the proper gage. Only one shape of said projections D D is shown; but any shape of projection can be so fitted, and any Inodiiication of this connection can be used to fit the shape of maintrack rail used.

There are always two of theseturn-table guides used to each turn-table, which respectively abut the periphery of the turn-tables,

as indicated by the curve given to the guide (shown in Fig. l) at its base or left-hand end, the widest part of the structure. 1

j It is well-known in practice that while the province of the turntable guide is tochange the car from a false to a true path, so as to lead it to the connecting traek-raiis, many cars leave the turn-tables in an approximately true path; and, further, that the carswhich cross the turntable guides, either in their through passage entirely across the turn-table or in their passage to and upon the turntable to be turned, take a true central path across the guides. The result is that there is one line or path in the surface ofthe guide which is so much more used than other lines or paths that it becomes the path of greatest wear. So much is this the case that the guides are generall'y worn out by being cut through at this approximately central path or line by the flanges of the car-wheels. It will be observed that in this invention, as illustrated in the drawings, such line or path of wear passes over a removable piece, preferably a steel rail, A, and the difference between the wear of this piece or rail and that of the side plates, B C, is such that said side plates, B C, may be made of cast-iron, and the guide as a whole will then be of comparatively uniform wear. Although the side plates may be, if desired, also of steel, the essential point is not entire uniformity of wear, but that the surface or line of greatest wear should be removable and renewable. The drawings, as described, show a steel center-rail, with cast-iron side plates, and the whole adapted to connection with a track of girder-rail construction; but the same type of construction can be readily adapted to a track having the flatstringer construction, and the two side plates, B C, can also, if desired, be made in one piece.

Having thus fully described my said iinprovement as of my invention, I claim- A turn-table guide for street-railway cars provided with a renewable wearing-surface of greater absolute endurance in the path of maximum travel of thecar-wheels on said guide than elsewhere in their travel thereon, substantially as and for the purposes set forth.

ALFRED V. DU PONT.-

Witnesses:

T. C. DANIGAN, C. S. ALLEN.

IOO

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