US726599A - Third-rail support for underrunning third-rail electric railways. - Google Patents

Description

No. 726,599. v PATENTED APR.28,1903. "L. WHEELER /& J. T. MURPHY. THIRD RAIL SUPPORT FOR \UNDERRUNNING THIRD RAIL ELECTRIC RAILWAYS.

A PLIUATION PILPD FEB. 24, 1903.

N0 MODEL.

UNITED rates PATENT OFFICE.

MURPHY, OF CHICAGO THIRD-RAIL SUPPORT FOR UNDERRUNNING THIRD-RAIL ELECTRIC RAILWAYS.

SPECIFICATION forming part of Letters Patent No. 726,599, dated April 28, 1903. Application filed February 24, 1903. Serial No. 144,599. (No model.)

To to whom it may concern/.-

Be it known that we, LEONARD WHEELER, of VVheaton, in the county of Dupage, and

JOHN T, MURPHY, of Chicago, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Third- Rail Supports for Underrunning Third-Rail Electric Railways; and we hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form part of this specification. Our invention relates to third-rail supports for underrunning third-rail electric railways. One of the objects of our invention is to provide a third-rail support and insulator of the class described, obviating the employment of bolts for securing the rail therein.

A further object is to provide a support of the class described arranged and adapted to permit the ready insertion or removal of the rail and insulation.

A further object is to generally improve the construction of third-rail supports and insulators of the class described.

With a view to attaining these and further objects, which will become apparent to those skilled in the art from the following descrip tion, our invention consists in the novel feao tures of construction and arrangement of parts hereinafter more fully described, and specified in the claims.

In the drawings, Figure 1 indicates two sup ports associated with a rail. Fig. 2 is a transverse vertical section through the rail and insulating material, taken on line 2 2 of Fig. 1. Fig. 3 is a detail illustration of the retainingscrew and washer.

etindicates as a whole the supporting-standard, which comprises in its construction a flat base 5, an upright portion 6, the upper part of which is preferably substantially vertical, a horizontal overhanging portion 7, and a depending reutrant end portion 8. .The portions mentioned are preferably formed by a continuous plate of substantially uniform thickness properly contorted.

9 indicates a centrally-disposed rib or web projecting vertically from the said plate and so proportioned as to width and thickness as I to afford the requisite strength to the construction.

The illustration in the drawings is suggestive of a proper design; but it will be apparent that the precise configuration of the supporting member might be considerably varied to suit the requirements of particular cases.

10 10 indicates spike-apertures adapted to receive spikes forsecuring the support to suitable ties.

11 indicates a boss projecting from the up right portion 6 of the supporting member intermediate the overhang 7 and the base 5 and provided with an internally-screw-threaded perforation Whose axis is inclined toward the reentrant end 8 of the standard.

12'indicates a rail of any preferred form suitable for third-rail distribution systems, whose base 13 is narrower than the length of the overhang 7 of the standard and whose web 14 extends below the outer end of the boss 11.

15 indicates a strip of insulating material embracing one side of the rail-base 13 and snugly fitting within the reentrant portion of the standard.

16 indicates a complementary insulating member embracing the opposite side of the rail-base and having a thickened portion extending downward in contact with the web 14 of the rail to a point beyond the outer end of the boss 11 of the standard. A slight space 17 is preferably left between the adjoining edges of the two insulating-sections. This space may be filled with some suitable soft insulating compound, such as Chattertons compound or the like. The insulation preferably extends longitudinally of the rail beyond the sides of the standard, as illustrated.

18 indicates a screw extending upward through the perforation in boss 11, and 19 a suitable washer interposed between the end of said screw and the insulating-section 16.

The use and operation of our invention will be apparent.

It will be noted that the portion 8 forms a depending abutment to prevent lateral outward movement of the rail and insulating sections and that the screw 18 is so disposed as to exert its pressure in a direction which forces the rail and insulation upward and outward toward the overhang 7 and the part 8. Thus the single screw 18 will serve to retain the parts rigidly in position against any possibility of movement. It will further be noted that'in order to remove the rail or insulation it is only necessary to retract the screw 18 Within the boss,thereby releasing the parts from pressure, when either of the insulating members may he slipped out of its position longitudinally of the rail and the rail then easily removed. By extending the insulation longitudinally of'the rail beyond the sides of the standard 4 liability of leakage from the rail to the standard is practically overcome, as will be well understood by those skilled in the art.

While we have described in some detail for.

purposes of full disclosure one operative embodiment of our invention, it will be apparent that numerous changes inform and details of construction might be made without departing from the spirit and scope of our invention.

Having thus described our invention, what we claim, and desire to secure by Letters Patent of the United States, is

1. In combination with a third rail for underrunning electric-railway systems, a support comprising a standard having a base, an upright, an overhang, and an abutment depending from the overhang, suitable insulation interposed between the rail and support, and a pressure device interposed between said insulator and the upright of the standard, and exerting its pressure to force the insulation and the rail upward and outward against the overhang and depending abutment.

2. In an underrunning third-rail system for electric railways, a rail-supporting standard comprising a base, an upright, a laterallyextending overhang, and an abutment depending from said overhang, in combination with a rail insulated from the support, and a pressure device taking through the upright of the standard and arranged to exert its .the first-said member.

4. In combination with the rail of an underrunning third-rail electric-railway system, a sectional insulator adapted to embrace the rail-base divided longitudinally of the rail, and a support comprising a standard having an overhang against which the insulator bears, disposed transversely of the rail, a depending abutment at one side of the insulator, an upright at the other side of the insulator, and a pressure device interposed between said upright and the insulator arranged to press the insulator upward and outward against the overhang and the abutment, whereby the insulator-sections are held together, and the rail secured.

5. In a rail-support of the class described, a standard comprising a base, an upright, an overhang, a rentrant abutment at the end of the overhang, and a screw carried by the upright disposed intermediate the base and overhang and extending in the direction of the reentrant abutment.

In testimony that we claim the foregoing as our own we affix our signatures in presence of two witnesses.

LEONARD WHEELER. JOHN T. MURPHY. Witnesses:

MARY F. ALLEN, GEO. T. MAY, Jr.

Images