US919728A - Railway frog and crossing. - Google Patents

Description

E. R. KENT. RAILWAY FROG AND CROSSING.

APPLICATION FILED SEPT. 23, 190B.

Patented Apr. 27, 1909.

W'Omesses:

UNITED STATES PATENT. ornicn;

EDWIN R. KENT, OF CHICAGO, ILLINOIS I .RAILWAY FROG AND "'oRossmG.

Specification of Letters Patent.

Patented April 27, 1909.

. Application filed September as, 1908. Serial- No. 454,307.

To all whom. it may concern:

Be it known that I, EDWIN R. KENT, a citizen of the United States, residing at Chi cago, in the county of Cook and State of illinois, have invented certain new and useful improvea'ients in Railway Frogs and Crossings, of which the following is a specification. I

' leretofore it has been the usual practice to construct railwayv frogs and crossings by building them up'out of a number of pieces of rails and blocks, or. filler pieces, and uniting the whole by means of bolts. In practice such built-up frogs and crossings are found to be defective on account ofthe jar and pounding of the trains, which cause-the various parts to become worn or loosened, withconsequent danger of derailment.

The present invention is designed to overcome these objections and defects and to provide a new type of frogor crossing which will be substantial andrigid in construction,

which will have no parts to become loosened;

and which will furthermore serve to, guide the wheels through the frog or crossing, that is, in passing from one set of rails to the other. I secure these advantages by means of the novel device shown in the accompanying drawings, in which .i igure l is a top plan view of a frog embod \-'ing this invention; Fig. 2 is .a side. elevation of the same; Fig. 3 is a sectional view on the line 33 of F ig, 1; and Fig. is a sectional view on the l 1ne;44:-of Fig. 1, showing the end of the frog pointin'elevatron. a \7 As indicated in these drawings, my improved frog is made entirely of one piece, having. pro ecting ends 5--5 and preferably made in the form of standard'rail sections and adapted to be united directly to the crossiir rails of the track. The endpieces 5 are shown as converging and the heads of the rail sections are continued from about the point of junction in a flat plate 7, forming a frog point The heads of. the projecting rail sections (Pb, which are, of course, shown as converging from the opposite direction, are continued by means'of plates or' tread members 99,, the inner edges of which converge to the -ipoint 10,

forming the throat of the frog, and then.

diverge parallel to the sides of the frog point fora convenient distance. and then turn outwardly as indicated at 11 so that .the ends will foi'in.giiidcs for the wheels distance beyond the point of the frog, atihe opposite end. As indicated in Fig. 1, the inner edges of these ridges are arranged to engage With-the wheel rims on the sides onposite to the flanges and thereby guide the Wheels so that the flanges will not strike the extreme end of the frog point 8. In order to accomplish this guiding movement, without shock or jar to the wheels, I prefer to arrange'the ridges lo'so that the inner edges approach nearest to the center-line of the rail of the track on which the wheel to be engaged would enter the frog, at a point slightly in advance of the frog point and gradually recede away therefrom. As shown in Fig. 1, this is done by having the inner faces of the ridges 15 made substantially in the form of curves which lie tangent to lines parallel to a center linethrough the frog, such points of tangency being about 'oppositethe end of the frog point. The

ends 'of theseprojections or ridges 1.5 are beveled as indicated at'lti, to provide for the passage of a wheel with-a blind rim or a wheel of an unusually wide trcad which might otherwise strike the abrupt ends of such ridges. The. connected plates and webs forming the'upper surface of thefrog proper are) provided with depending flanges or supports 17 having flanged bottoms In for engagement with the railway ties.

-"lhese flanges 17 and the surface portions are further braccd 'and connected together by means of -a -ser1es of webs 19 exteudmg across and lengthwise of the frog proper. the whole being formed in one piece or casting in order to make a rigid and compact structure. 'I prefer to form' these frogs of metal having high tensile strength and suitable wearing qualities, to stand the heavy demand placed upon such devices.

Having thus describedmy invention, which I do not wish to limit -to the exactform or arrangement herein shown and de scuibcd, what I claim and desire. to' secure by Letters Patent is: 1. A railway frog-or crossing comprising "plates adapted to .form treads or wearing vsurfaces for the wheels,. webs connecting said plates and leaving grooves between the same for the wheel flanges, the late I forming the frog point being made soli for a distance from the end of the point and being provided with a downwardly projecting supporting flange and end projectionsextending from saidplates and webs,

said projections being in the form of rail sections; all of said parts being formed of one piece, said ridges approaching nearest to the lines corresponding with the adjacent -sides of the intersecting grooves, at points adjacent to the end of the frog point, and

receding away therefrom in each direction,

the arrangement being such that the wheel will preferably be gradually crowded over by-one of said'ridges in, passing toward the --f-rog point so that the wheel flange will not engage with the end of the frog point.

2. Arailway frog or crossing comprising a wheel-supporting member-having grooves '-formed therein. for the wheel flanges, end

projections adapted to be secured to rails,

and upwardly projecting ridges for engagement with the wheel rims to guide the wheels through the frog or crossing.

, 3; An integrally formed railway frog: having a frog point comprising a flanged plate terminating in sections for engagement with rails, wing plates arranged to coact with said frog point and connected'therewith by a-..web arranged to leave grooves for the wheel flanges, said wing plates being pro- 'vided with terminals for connection with rails, and upwardly projecting ridges on {said wing plates for engagement with 'the "rims of the wheels to supporting members being provided with terminals for connection with rails, curved guide ridges at the outer edges of said.

wheel-supporting members forguiding the wheels thi'ougli'the frog, dependingflanges having widened bottoms for engagement with railway tiesand cross webs for bracing said parts, substantially as described. EDWIN Pt, KENT.

Witnesses:

A. W. FENS'IEMAKER, BURT Cur. BEAN.

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