US1184363A - Railway-tie plate. - Google Patents

Description

. E m e PATENT carrot.

' I PAUL IPARKES LLEWELLYN, or CHICAGO, ILLINOIs, A ssIeNOR To INTERSTATE IRON AND sTEEL COMPANY, OF CHICAGO, ILLINOIs, A 'COErORATION F ILLINOIs.

RAILWAY-TIE PLATE.

T 0 all whom it may concern:

Be it known that I, PAUL P. LLEWELLYN, a-citizen of the United States, residing at Chicago, in the county of Cook and State of'lllinois, have invented certain new and useful Improvements in Railway Tie Plates, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to improvements in railway-tie plates and its Object is to provide a tie-plate with oblique ribs or'fianges on its under or tie-engaging face which will prevent both its creeping or moving across the tie under the longitudinal thrust or impact of the passing train, 4 and also its spreading or slippage along the tie when subjected to lateral thrust or pressureof the car-wheel against the'rail, as for example when rounding a curve in the track.

By my invention tie-engaging flanges or ribs are provided on the underside of the plate extending obliquely of the line bf the superposed rail so as to prevent both lateral spreading and longituidnal creeping of the plates and rails upon the ties, and in my invention these oblique ribs or flanges are ar-' ranged in rows of parallel lines extending indifferent directions from the median line of the plate to its oppositesides with each pair of opposite ribs forming a wedge which extends across the line of the rail and whose apex is directed toward the center of the track, as shown for example in Figure 2.

In the accompanying drawings, Fig. '1 is atop plan view of a' section of a railway rail with one of mytie-plates; Fig. 2 is abottom plan view of the tieplate, and Fig. 3 is a longitudinal sectional view of the plate on the line 33 of Fig. 2 looking the direction of the arrows.

In constructing a tie-plate in accordance with my invention, the metallic plate designated as a whole by the reference letter A. is of rectangular shape of any suitable or desired dimensions, and is formed with spike holes a, properly locatedtg receive spikes B to secure the rail C to the underlying tie. The plate is provided near one end with an upwardly extending shoulder or abutment a on its upper face to prevent buckling of the plate under the weight of the passing train and to hold, the rail-flange from I spreading on the plate, it being understood that in practice the end of the plate near- Specification of Letters Patent. i Patented Efiay 23, 1916, Application filed November'S, 1915. Serial No. 59,715. i

which the abutment a" is arranged is usually the outer end of the plate with reference to the track itself.' 3'

On the under or tie-side of the plate I provide a plurality of flanges or ribs a adapted to be embedded in the wood of the associated tie and arranged obliquely of the length of the plate so that they are oblique to the line of the superposed rail when the plates are assembled inplace between the rail and ties. By this oblique arrangement of the ribs the latter afford an effective resistance to both the longitudinal and lateral thrusts of passing trains and prevent the plates from spreading along the length of the ties and from creeping across the ties in the line of the rail. The diagonal ribs are arranged in rows of parallel lines which extend in different directions from the longi-- tudinal central line of the plate to its opposite sides with each pair of opposite ribs forming a wedge which extends across the l1neof therail and whose: apex is directed toward the center of the track. This latter arrangement is illustrated in Fig; 2 of the tie under longitudinal thrusts of the passing train, and also holds it against spreading toward the outer end of the tie due to lateral thrusts of the train, as the oblique arrangement of the ribs enables them to resist movement of the plate in either direction. Also by having the opening between a pair of ribs forming a wedge face toward the outer end of the plate, 71. 6., that end lying beyond or outside of the track itself, the spreading strain or pressure of the plate toward-the outer end of the tie tends to com pact the wood of the ties between the ribs forming the wedge, thereby increasing the resistance of the ties to the spreading of the rails. This construction is of decided advantage because the ribs of each wedge thereby act to compact the wood of the tie to \increase its resistance to this lateral thrust of the plate, instead of splitting the tie or forcing its fibers apart and thereby decreasing its resistance to the lateral thrust of the plate as is the case when the apex of 30 at each side of the plate.

' the wedge points toward the outer end of the tie and so is forced into wedging en'- gagement with the tie.

In practice I also prefer that the inner angle between the rows shall be such that a the outer ends of each pair of ribs forming a wedge shall extend beyond the apegl of the next pair, or stating the same arrangement in a different way that the apex of each pair shall lie inside the line extending across between the ends of the next pair. I By this latter arrangement when the plates are cut from a strip or length of metal with the shearfor the inner end of a plate at the apex of a pair of ribs, the shear for the outer end of the plate will cut through the ends of another pair of ribs and thus leave at the inner edge of each plate a pair of short oblique ribs a located at a point Where the weight and pressure of the car wheels tend most to impact the plates on the ties, so that I obtain the resistence of these short ribs against movement of the plates more elfectually than if they were located at the'outer end of the plate in extension of the last pair of ribs at that end. If desired a plurality or longitudinally extending ribs a may be employed, parallel with the median line of the plate,'and one I claim i 1. A railway-tie 'plate provided on its under side with a central longitudinal rib and a plurality of ribs arranged in rows of parallel lines extending in different directions from the median rib of the plate to its opposite sides with each pair of opposite ribs'in the form of a wedge having its apex extendversely to the line of the associated rail and toward the center of the track.

3. A railway-tie plate provided on its under side with a plurality oi tie-engaging ribs extending longitudinally of the plate at its center and sides and with a plurality of tie-engaging ribs extending obliquely of the plate in rows of parallel lines from the median rib to the side ribs with each pair of opposite oblique ribs in the form of a wedge opening toward th outer end of the plate.

4. A railway-tie plate provlded on its under side with a plurality of tie-engaging ribs arranged in rows of parallel lines extending in difierent directions from the median line of the plate to its opposite sides with each pair of opposite ribs in the form of a Wedge having its apex extending trans versely to the line of the associated rail and toward the center of the track, and with a rib at each of'its inner corners parallel with the other ribs on its side of said median line.

In testimony whereofI affix my signature in presence of two witnesses A PAULPARKES LLEVVELLYN.

Witnesses:

J. E. RUSSELL, W.-J. GRIFFITH.

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