US514465A - Tmk national uthoorapkinx - Google Patents

Description

Y (No Model.)

` w. wf. HOLMES. RAILWAY TIE PLATE.

kPaterlted Peb. 13, 1894.

UNrrnD STATES Parenti* Ormes.

WILLIAM IN. HOLMES, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO THE SER'VIS RAILROAD TIE PLATE COMPANY.

RAI LWAYTI E PLATE.

SPECIFICATION forming part of Letters Patent No. 514,465, dated February 13, 1894.

Application tiled June 2, 1893. Serial No. 476,367. (No model.)

.To 1f/ZZ whom, t may concern,.-

Be it known that I, WILLIAM W. HOLMES, a citizen of the United States, residing at Ohr cago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Railway-Tie Plates; and I hereby declare the following to be a full, clear, uand exact description of the same, reference being had to the accompanying drawings, in

1o which- Figure 1 is a perspective view of a compound tieplate, embodying my invention, the dotted lines indicating the position of the rail when in service. Fig. 2 is a bottom perspecr5 tive view of the upper or rail plate, and Fig. 3 is a bottom perspective view of the lower or bed-plate.

Like symbols refer to like parts wherever they occur.

My invention relates to the construction of that class of devices commonly termed wearplates or tie-plates, which are interposed between the rail and the tie to protect the tie from rapid destruction and prevent any lateral movement of the rail; and has for its object the production of a simple, efcient, cheap, and easily manufactured trussed tieplate, provided with lateral supports or abutments for the foot flange of the rail.

To this end the invention, generally stated, consists in the combination with a trussed 'base plate or tie-plate proper, of a superposed rail-plate provided with abutments for the foot flange of the rail.

There are other, minor, features of invention relating to the particular means for combining the plates, ali as will hereinafter more fully appear.

In railway tie-plates of the general charac- 4o ter to which this invention belongs,the rib or truss flanges on the under side of the plate are preferably arranged parallel with the ber of the tie and transversely of the rail, so as to prevent the buckling of the. tieplate, as well as to avoid rupture of the fiber of the tie, while the abutinents on the upper side of the tieplate for the lateral supportof the foot flange of the rail, are at right angles to the truss ribs or .flanges on the under side of the 5o plate. As a consequence of this, single part tie-plates of the usual forms, are as a general rule, necessarily produced by casting. In case of my compound tie-plate it may be produced by either castingorrolling-a nd as rolling produces the lightest, strongest, and most elastic or resilient plate-such method of production is to be preferred, though the invention isnot limited thereto.

I will now proceed to describe my invenl tion more fully, so that'others skilled in the 6c art to which it appertains may apply the same..

In the drawingsA indicates the base-plate, and B the railplaie of a compound tie-plate.

The base-plate A has upon its under face one or morepreferably a series of ribs or flanges a, adapted to enter vthe railway tie parallel with the fiber thereof so as not to tear or destroy the iber-which ribs serve not only to truss or strengthen the plate and prevent its buckling under the tread of the loaded 7o wheel, but also to prevent the creeping or moving of the tie-plate on the tie. About midlength of the base-plate it is provided with one or more perforations o/-preferably a series, and of polygonal shape-to receive a 7 5 projection orprojections on the under face of the superposed rail-plate B, and said bascplateA may also be provided with one or more spike holes a2. V

The superposed rail plate B is preferably 8o provided with a series of three or more prof jections or ribs, of which the two on its upper surface are parallel and bound the rail seat?) forming the lateral abutments b and b2, for the foot flange of the rail (shown in dotted line) while that upon its under surface lies midway between and is cut away at points to form the projection (or projections) c, which enters the perforation a of the base plate A. Rail-plate B, as shown in the drawings, is also 9o perforated, as at c2, in line with perforation a2 of base plate A for the passage of the spike.

In making my compound tie-plate I prefer to roll two bars the first of which shall be a multiple of base plate A having one or more longitudinal ribs oz, and the second of which shall be amult'iple of rail plateB having longitudinal ribs, two upon its upper surface corresponding to the abutments b b2, and one upon its under surface corresponding to proroo jection c. Such bars are then cut into proper lengths for tie-plates, and the sections for the base-plate A are punched as at ct a2, while those for the rail plate are punched as ,at o2 for the spike, and as at cl, d, cl, to remove such portions of the central rib as are not required for the projections c Which enter the perfora-` tlons a of the b ase plate A. The separate sectionsA B, can thus be produced yby rolling as Well as by casting and will, when placedfi'n position one upon the other, produce a compound tie-plate wherein the truss `ribs of the base plate and the abutments of the rail plate for the foot flange of the rail are at rightangles, the position required to best supportthe plate and prevent the buckling thereof and@ prevent the lateral displacement of the lrail. It will be at once evident to one skilled in the art, that the projections (c.) may ,be made: on the upper surfaceof ,the base plate A,andf the corresponding opening (z",),;by Whichlhi plates lock,in the rail-,plate B; andit .will also? be evident Lto Vsuch persons, that 4by a ,properi arrangement of the spike openingsvacofi the two plates the openings a and the projec-i tions c may be omittedgand .having hereinlr shown and'describedthebestmode ,known to L me of carrying out .myinventiom Iii'lclude; the above alternative, and all equivalent constructions inthe following claims.l Having 1thus described 4my invention, what?y Iclaim, and desire to A secure by `Letters Patent, is-

1. The combination in a tie-plate, of a baseplate having one or more ribs or flanges on Vits under face, and a superposed rail plate havingabutments fortlle rail H ange; 4s illgstgtntially'as and for the purposes specified.

2. Thecomhinatioh in atie-plate, of a baseplate and a superposed rail-plate, both of said plates having ribs or anges, the ribs on one plate being at au angle to those on the other, one of said plates having an orifice adapted to receive a rib or ,projection on the other plate; substantially as and for the purposes specified.

3. A compound tie-plate, composed of a baseplate having kone,emmers longitudinal ribs o r flanges a and a series of 1slotsu, and a superposedlrailgplate having, '1 abutments b band projectionsc; substantrail-ly asand Ifor the purposes speQiiied.

WILLIAM W. AimLM- irs

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