US1381575A - Tie-plate - Google Patents

Description

J. LUNDIE AND G. W. WHITEMAN.

. TIE PLATE. APPLICATION FILED FEB.2I, 1921.

Patented June 14, 1921.

Fig.2.

ulvonz V GEORGE W WHITEMAN ZQW UNITED STATES PATENT OFFICE.

JOHN LUNDIE, OF NEVI YORK, N.

Application filed February 21, 1321.

To all to 71 cm it may concern PENNSYLVANIA.

TIE-PLATE.

Specificationof Letters latent.

Be it known that we, JOHN LUNDIE and Gnonon W. Wnrrniriin, United States, residlng at York, and Ph1ladelphia,

speetively, have invented certain new 'lfie-Platbs, oi winch useful Improvements in both citizens of the New York, Blew Pennsylvania re and the following is a specification.

This invention relates to tie-plates for railway rails, the plate preferably being constructed and designed for use tinuous type oi rail-joint under the abutting ends of joint bars interposed w ith the conso that it will lie the rails, with the beween said rail ends and the tie-plate although the tie-plate may also be placed at other locations tinuous rail-joint is not used.

where a con- One oi the objects of the present invention is to provide a tie-plate struction as will give a proper seat a port for the oint upon the tie.

of such conr supin a meas ure, the present invention makes use ct some of the principles found in prior Reissue Letters Patent of John Lundie,'l*io. l hlQ l,

dated May 2, 19l6. Another obj ect of the present invention is to provide a tie-plate oi that type in which the top-seating surface thereof is inclined so as the line of thrust of wheels, which special means the continuous ty )e of rail-joint.

the invention are to provide an ethjects oi to be normal to the coning oi' the cartie-plate is provided with adapted for association with Other obcient and practical tie-plate which has, at

its top, means adapted thrust.

to receive lateral These bein amon the obects ot the n'es out invention, the same features of construction and consists of certain combinations of parts to be hereinafter described and then claimed with reference to the accompanying drawings illustrating one embodiment of the invention, and in which:

Figure l is a plan view of with which the continuous joint the tie-plate, may be employed to connect the adjacent ends of two rails.

Flg. 2 is an edge view of the plate;

Fig. 3 is an elevation viewed toward the thlnner edge of the t1e-plate, and

Fig. i is a transverse section oi the plate,

the said joint and in side elevation.

In the drawings, two rails,

a rail, the tie being shown of which rail latented J une 14, 1921.

Serial No. 446,834.

10 is shown, are connected by means of joint bars 12, 13 of suitable crosssection, said joint bars having mutually presented baseiianges let, 15, upon which the bases of the two rails rest. The tie l6 may be any usual wooden tie.

Our improved tie-plate, which may be used in association with such joint bars as 12, 13, comprises the plate proper l7, preferably having on its bottom or base a plurality of tie-engaging elements preferably such as are shown and described in atoresaid patent. Means are provided so that the lateral thrust may be imparted to the tieplate, and preferably, such means consist of a longitudinal rib or shoulder 18, which is located at approximately the mid-width of the tie-plate l7 and extends from end to end.

The tieplate when used with the continuous joint is positioned thereunder and seated upon the tie, with the thrust-receiving shoulder or rib 18 positioned between the base- flanges 14, 15 of the joint bar-s12, 13, so that the adjacent edges of said flanges will s Jan the said shoulder. When the parts are bolted and spiked, the lateral thrust is transmitted to the rail, and thence to the joint bars, and will be transmitted laterally to the shoulder 1.8 intermediate of the joint bars. The tie-plate need have no outer shoulder such as the edge of a rail would ordinarily abut against it the joint bars were not used. Preferably, said tie-plate 17 is provided with a slight camber longitudinally thereof, and which may provide not only a concaved transverse base for the plate, but a convex transverse top. Preferably, the radius of curvature of the described camber is about 10 feet, as this curvature in practice has been found to be probably the best suited for the particularly described tie-engaging elements on the tie-plate.

Preferablyalthough not necessarily-the upper surface of the tie-plate is inclined as above mentioned, and in such cases it is preferred that the tie-engaging elements upon he base of the tie-plate be constructed as shown, that is to say, its under surface will have a plurality of seating surfaces which are spaced apart, said surfaces being indicated at 19, 20, 21, 22 and 23. These seating surfaces, in the preferred embodiment of the invention, extend throughout the length of the tie plate, and are disposed in planes parallel with each other, planes extending at acute angles to the supporting surfaces of the ties, and are also parallel, substantially, with the upper surfaces of the heads of the rails and with the bases of the joint bars l2, 13. These surfaces are arranged, as shown, with a plurality of steps, the steps being joined preferably by reverse curves forming shoulders which are convex at 24, being the lowest level of the undersurface of the base of the tie-plate, and which are concaveat 25, being the highest level of the undersurface.

In the specifically described and illus trated embodiment of the invention it will be seen that the tie-plate will gradually form its own seat in the ties without injury to the fibers of the ties; that the described combination of parts will practically eliminate all outward thrust due to the coning of the wheels, for the reason that in the specific embodiment of the invention all bearing surfaces will be normal to the line of thrust of the coned caruvheels or wheel load; and, that if the tie-plate be cambered as described, it will have more or less of a springy action, to permit it to be flattened out as the load passes over it, the plate assuming its camber when the load is removed, until the tie ultimately assumes a convexity corresponding to the concavity of the plate.

Spikeholes 26 are preferably made in the tie-plate, so as. to coincide with the spike-holes usually made in the ends of the joint-bars.

Obviously, the invention described and illustrated is susceptible of modification, and this may be resorted to by those skilled in the art without departing from the scope of the claims.

W hat we claim is:

l. The combination with a tie-plate having an upper thrust-receiving shoulder po-.

sitioned in the zone thereof, over which the rail is to be positioned, of rail-joint bars applied to said plate with the inner edges of their bases spanning said shoulder.

2. The combination with a rail, andjointbars applied to said rail, of a tie-plate having an upper shoulder, the inner flanges of said joint-bars being between the rail and tie-plate, and said shoulder being between the adjacent edges of said flanges to take up lateral thrust.

8. The combination with a tie-plate having an upper thrust-receiving shoulder positioned in the zone thereof over which the rail is to be positioned, of rail-joint bars applied to said plate with the inner edges are arranged in of their bases spanning said shoulder, said plate being also cambered longitudinally.

at. The combination with a tie-plate havingan upper thrust-receiving shoulder positioned in the zone thereof, over which the rail is to be positioned, of rail-joint bars applied to said plate with the inner edges of their bases spanning said shoulder, the base of said plate having a plurality of tieengaging elements.

The combination with a tie-plate having an upper thrust-receiving shoulder positioned in the zone thereof, over which the rail is to be positioned, of rail-joint bars applied to said plate with the inner edges of their bases spanning said shoulder, the base of said plate having a plurality of longitudinal tie-engaging urfaces disposed in different planes.

6. The combination with a rail, and jointbars applied to said rail, of a tie-plate having an upper shoulder, the inner flanges of said joint-bars being between the rail and tie-plate, and said shoulder being between the acent edges of said lianges to take up lateral thrust, said tie-plate having a jointbar seat normal to the line of thrust of the coning of a car-wheel and lower surfaces parallel with said seat.

7. The combination of a tie-plate, railjoint bars resting upon said plate, and thrust-receiving means on the plate and between adjacent surfaces of the joint bars.

8. The combination of a tie-plate, railjoint bars resting upon said plate, and thrust-receiving means integral with said plate and spanned by and between the adj acent surfaces of the joint bars.

9. The combination of a tie-plate, a railjoint bar, and means located on the plate and at the inner edge of the bar for taking up lateralthrust of the bar.

10. The combination of a tie-plate, ailjoint bars resting upon said plate, and means located between the bars for trans mitting the lateral thrust of the bars to the tie-plate.

11. The combination of a camberedtieplate, rail-joint bars resting upon said plate, and means located between the bars for transmitting the lateral thrust of the bars to the tie-plate.

12. The combination of a tie-plate having an inclined upper surface, rail-joint bars resting upon said plate, and means located between the bars for transmitting the lateral thrust of the bars to the tieplate.

JOHN LUNDIE. GEORGE W. WHITEMAN.

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