US1333860A - Tie-plate - Google Patents

Description

I. LUNDIE.

'[IE PLATE.

APPLICATION FILED .IULYlZ, I9l9.

1,333,860. I Patented Mar.16 ,1920.

I N V EN TOR.

A TTORNE Y.

JOHN LUNDIE, OF NEW YORK, N. Y.

TIE-PLATE' Specification of Letters Patent.

Patented Mar. 16, 1920.

Application filed J'uly 12, 1919. Serial No. 310,375.

To all whom it may concern:

Be it known that 1, JOHN LUNDIE, a citizen f the United States, residing at New York, borough of Manhattan, State of New York, have invented certain new and useful Improvements in Tie Plates, of which the following is a specification.

The present invention relates to improvements in railway tie-plates, more especially adapted to the tie-plates shown, described and claimed in my prior Patent Reissue May 2nd, 1916, No. 14,124; and to those of the Richards Patent No. 916,489 and the Doster Patent No. 986,698, although the invention ma be found to be of a wider application.

ne of the objects of the invention is to provide a tie-plate with tie-engaging and gripping means which, besides resisting the ordinary lateral thrusts of the rail, will resist all of the extraordinary lateral thrusts of the rail over and above those caused by the coning of the wheels, so that there can be no slippage of the plate on the tie, which is the case with some known tieplates, due to sharp curves, the equipment thrashing laterally on the track, tight trackgage, etc. Another object is to improve tieplates in general, by making them thoroughly satisfactory, economical and eflicient.

These being among the objects of the present invention, the same consists of certain features of construction and combinations of parts to be hereinafter described and then claimed with reference to the accompanying drawings illustrating a preferred embodiment of the invention in which:

Figure 1 is a transverse sectional view showing the improved tie-plate in connection with a tie and a rail;

Fig. 2 is a perspective view of the tieplate; and

Fig. 3 is a transverse section of the tieplate, on the line 3-3, Fig. 2

Referring to the drawings, the rail 10, the wooden tie 11, and the preferredv tie-plate 12, are shown in Fig. 1 in the position of use, and, as the tie-plate shown is provided with an inclined surface upon which the base of the rail 10 rests, the rail is inclined. The

' reasons for the inclination of a rail are well known and are fully disclosed in In said reissue atent. The tie-plate is provided with a rail abutting shoulder 13, against which the outer edge of the base of the rail bears, while the under surface of the rail bears upon the top surface or rail-seat 14 of the plate, which is inclined downwardly away from the shoulder 13; the section of plate which is shown in Fig. 1 being, therefore, substantially wedge-shaped. Preferably the tie-plate is cambered from edge to edge as indicated by the section on line 3-3, Fig. 2, for known reasons.

The present standard coning of car wheels is 1 in 20, and that is assumed to be the degree of inclination of the upper surface 14 of the tie-plate shown, although of course, l

the inclination could conform to any degree of wheel-coning, and I am therefore not limited to any specific inclination. If the tieplate is cambered, the degree of curvature is preferably somewhat less than is shown-in Fig. 3, but, for the sake of clearness, the curvature shown is a slight exaggeration of that which is preferred in practice.

The under surface of the tie-plate is preferably formed, as shown in Figs. 1 and 2,

with tie- engaging portions 15, 16, 17, 18 and 19, which are substantially parallel with the inclined upper surface or rail-seat of the plate so that they are normal to the line of thrust of a coned-tread of a, car wheel. tie- engaging portions 15, 16, etc., are so formed that they cause depressions in the upper surface of the tie when the plate is in use. The reason for this preferred embodiment of the invention is clearly stated in my said reissue patent. If the plate is cambered, it will be seen that these tie-engaging portions at the under side of the plate will extend across the plate in parallel. curves, each of which curves will be parallel with the curved upper surface of the plate.

Tie-plates such as are disclosed'by my said reissue patent will, in. practice, take care of substantially all lateral thrusts which are imparted thereto, through the rail, in the direction of the rail-abutting shoulder 13, but to remove all possibility of slippage of the plate and to provide the under surface thereof with a superior gripping action and additional frictional resistance it is provided with tie-gripping protuberances 20, which extend below the level of the lowest points of the under portions 15, 16, 800. These protuberances 20 are preferably in the form of parallel ribs, that is to say, they are ribs which are more distinctive than the portions 15, 16, &c., which in efiect may be said to be stopped or spaced,

These the rail more or less flattened ribs, as illustrated, and to form'relatively broad bases for the ribs 20. The distinctive ribs 20 extend preferably parallel with the under surface portions 15, 16, &c., and are hence curved longitudinally, when the under surface of the plate is curved, and the lower edges of said ribs 20 are curved or rounded transversely so as to cut the fibers of the tie as little as possible, if at all, as the under surface of the plate embeds itself in the tie. The distinctive ribs 20 are shown as alternating with the under surface portions 15, 16, &c., and the high levels of the portions 15, 16, are shown as joined to the ribs 20 by incurves 21, while at the other side of the ribs 20, the" said portions 15, 16, &c., are joined to the ribs 20 at their lower levels by i11- curves 22. In effect, therefore, the stepped or spaced portions 15, 16, &c., are joined together by curves.

The tie-plate is provided with any suitable number ofspike holes as 23, 24, to receive spikes 25. It will be seen that the described tie-plate will be provided with an undulatory under surface, which preferably has the conformation shown, for the purpose of accomplishing the objects, or some of them, hereinbefore referred to. Other advantages will be apparent to those skilled in this art.

It is obvious that the invention is susceptible of modification as, for instance, the protuberances, such as 21, may be different, they may be differently placed, or their number may be increased or diminished, and these, and other modifications, may be resorted to without departing from the spirit and scope of the invention as expressed in the claims.

What I claim as new is:

1. In a tie-plate with an inclined rail-' seat, and having under-surfaces which are substantially parallel with said seat; protuberances on said plate extending below said under-surfaces.

In a tie-plate with an inclined railseat, and having under-surfaces which are substantially parallel with said seat; protuberant ribs located on said surfaces at their lowest level, and extending below said under-surfaces.

3. A tie-plate having an inclined railseat and a rail-abutting shoulder, and which is curved in a direction transverse of said seat, and is provided with ribs on its undersurface, wherebyall of the lateral thrust of transversely of the rail-abutting shoulder is taken up and slippage of the plate in that direction precluded.

4. In a tie-plate with arail-seat normal to the line of thrust of a standard coned tread car-wheel, and having upder-surfaces which are substantially parallel with said seat; protuberances on said plate extending below said under-surfaces, so as to take up any extraordinary thrust over and above that caused by the coning of the wheels.

5. In a tie=plate with an inclined railseat, and having under-surfaces which are substantially parallel with said seat; protuberant. ribs located on said surfaces at their lowest level, and extending below said under-surfaces, the edges of saidribs being rounded transversely.

6. In a tie-plate having an upper railseat normal to the line of thrust of a coned tread car wheel and lower stepped or spaced surfaces parallel with said seat; a protuberant, transversely-curved, rib located on the under side of said plate, and-which extends below said surfaces.

7. In a tie-plate having an upper railseat normal to the line of thrust of a coned tread car wheel and lower stepped or spaced surfaces parallel with said seat; protuberant ribs located along the lower portions of said surfaces so as to extend below them.

8. In a tie-plate having a rail-abutting shoulder, and'which is substantially wedgeshaped transversely of the rail-abutting shoulder and which is cambered in a direction longitudinal of the line of track; ribs which are sufliciently lowered below the under surface of said plate to absorb all extraordinary thrust over and above that caused by the coning of the wheels.

9. In a tie-plate having a rail-abutting shoulder and which is substantially wedg shaped transversely of the rail-abutting shoulder and which is cambered in a direction longitudinal of the line of track; ribs which are sufficiently lowered below the under surface of said plate to absorb all extraordinary thrust over and above that caused by the coning of the wheels, said ribs being curved to conform with said camber.

10. In a tie-plate which is curved at its under side in the direction of the line of track and is provided with raised or stepped surfaces which extend in the same direction as the curve; a protuberant rib located on the under side of the plate and which extends below said surfaces.

11. In a tie-plate which is curved at its under side in the direction of the line of track and is provided with raised or stepped surfaces which extend. in the same direction as the curve; a protuberant rib located on the under side of the plate and which extends below said surfaces, and is curved similarly to the curvature of the plate.

12. In a tie-plate'which is curved at its under side in the direction of the line of track and is provided with undulations thereat which are stepped successively in a direction transverse of the curvature; a protuberant rib located to project below said undulations.

13. In a tie-plate which is curved at its under side in the direction of the line of track and is provided with undulations thereat which are stepped successively in a direction transverse of the curvature; protuberant ribs located to project below said rection as said curvature.

14. A tie-plate, which 1s cambered and is provided with projections on its under side.

15. In a tie-plate having a rail-abutting shoulder, and which is provided with raised or stepped under surfaces which extend in the same general direction as the rail-abutting shoulder; means protruding below the lower level of said surfaces and adapted to supplement the action of said surfaces in taking up the thrust in a direction at right angles to said shoulder.

16. In a tie-plate having a rail-abutting shoulder, and which is provided with raised same general direction as the rail-abutting shoulder; means comprising prominent spaced ribs on said surfaces, protruding be- 'low the lower level of said surfaces and undulations and extending in the same d1- adapted to supplement the action ofsaid surfaces in taking up the thrust in a direction at right. angles to said shoulder. I

17 In a tie-plate having a rail-abutting shoulder, means on the under side of the plate for taking up the thrust due to the coning of the wheels in a direction transverse of the rail-abutting shoulder, and supplemental frictional means on the under side and located within the confines of aforesaid means; for taking up any extraordinary thrust in said direction, said frictional means extending below aforesaid means.

JOHN LUNDIE.

or stepped surfaces which extend in the

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