US1425309A - Tie plate - Google Patents

Description

F. E. ABBOTT.

TIE PLATE.

A PPLICAT|0N FILED MAR. 7, 1916. RENEWED JAN. 13,1922.

1,425,309. Patented Aug". 8, 1922'.

2 SHEETS-SHEET l- F. E. ABBOTT.

TIE PLATE. APPLICATION FILED MAR-7.1916. RENEWED JAN. 13,1922.

1,425,309, Patented Aug. 8, 1922.

2 SHEETS-SHEET}.

unrrnu STATES PATENT omen.

FRANKLIN E..ABBOTT, OF BUFFALO, NEW YORK, ASSIGNOR TO LAGKAWANNA STEEL COMPANY, OF LACKAWANNA, NEW YORK, A CORPORATION OF NEW YORK.

Application filed March 7, 1916, Serial No. 82,635.

To all /1 am it may concern Be it known that I, FRANKLIN E. Anno'i'r, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Tie Plates, of which the following is a specification.

My invention relates to hook-shoulder tieplates for railways of the type in which the tie-plate is formed with a shoulder on its upper surface provided with a hooked portion to extend over the outer edge of the rail flange I and engage therewith but spaced therefrom a small distance, whereby the rail is held very firmly in place, but freedom of wave motion is permitted. The advantage of this is to diminish, practically overcome, disturbance of the road-bed and of the spikes, with an increase in safety and a decrease in expense. This tie-plate with spaced hook is broadly new and is described and claimed in my application Ser. X0.

1 (329.654. resulting in Patent 1,178,200, Apr.

1t. 1916, of which this application is a continuation in part.

My present invention relates to certain improvements and modifications in the tieplate of my aforesaid application whereby greater freedom is permitted to the wave motion. without din'iinishing the security of the hold. The essential feature is the shortening of the hook in a longitudinal direction and preferably providing it with a curved lower surface. so that It cngagcs with therail flange only at its center. and with a very short contact. and curves upwardly and outwardly therefrom so that it permits greater freedom of wave motion and entirely eliminates rocking or rolling of the tie.

Other features herein shown are the arrangement of the spike-holes so that directengagement between the spikes andthe rail is avoided; and the. depressions between the shoulders at each end of the tie-plate in the rail bearing surface. so that there is a rounded edge in contact with the. rail base instead of a square or sharp edge.

My present form of tie-plate is somewhat lighter in weight and lends itself to'longitudinal rolling in multiple bar form, the spaces between the. hooks being formed with a corrugated roll. and the depressions or grooves formed in; alignment with the spaces. The

TIE PLATE,

Patented Aug. 8, 1922. Renewed January 13, 1922. Serial No. 529,094.

tie-plates are separated from the rolled bar by shearing in the center of the spaces and the depressions, without distorting the hooks, which may be bent over before the shearing, or after as may be desired. These hooks are preferably bent over into position in the last rolling pass.

My invention is illustrated in the drawing herewith in which the same, reference numerals indicate the same parts in all the figures. Figure l is an end elevation of my tie-plate showing the rail ii place. Figure 21s a top plan and Figure 3 is an isometric view. Figure 4c is a longitudinal cross section of the tie-plate looking toward the hook to illustrate the curved lower surface of said hook. Figs. 5 and 6 show in end elevation and plan a modified form for use with driven spikes. Fig. 7 is a similar form adapted for screw spikes. Fig. 8 illustrates the rolled bar before the tie-plates are sheared therefrom. Fig. 9 is a cross section of the tieplate through the hook showing a slightly modified form. v

In the figures 1 indicates the tie-plate base having a lower surface which may be smooth as shown, or roughened or corrugated, or having sharp edged flanges, the better to engage with the wooden ties, all as well understood. On its upper surface are the peculiar hook shoulder 2 and the straight shoulder 3, inclosing between them the bed, or rail-bearing surface, 4, as shown. At each end this bed is depressed at 6 so that the rounded edge 7 comes in contact with the base of the rail 8, instead of the usual sharp edge at the ends of the bed or surface. whereby the danger of cutting or nicking the. rail base is greatly diminished. A sharp edge is commonly produced by shearing.

As best shown in Figs. 3 and 4 the shoul: der 2 is provided with a hook 12 extending .inwardly over the edge of the rail-flange and the parts are so proportioned that when the rail is at rest there is a space between the flange and the hook largeenough to permit freedom of wave motion but small enough to insure enga ement'of the hook with the flange at eaci upward 'movclnent of the rail when the train is passing so that the rail is secured very firmly but without ,rigidit Commonly the space is from to me not above about inch at the outside. \Vhile the shoulder extends from end to end of the tie-plate, the hook is much shorter, and preferably formed as shown curved in a horizontal plane, and also having its-under surface formed in a flat curve as best shown in Fig. 4 so that it engages with the rail-flange only with the central portion of its lower surface. under surface of the hook, the extent of engagement with the flange is very short, but this short engagement gives practically as secure a hold as a long engaging surface and has the advantage of interfering less with the wave motion, and of avoiding'undesirable clamping.

By reason ofthis curvature of the The straight shoulder 3 may be formed as shown with parallelridges 14' and the spike holes punched in the depression between as best shown inFigs. 1 and 3. This affords a good bearing for the screw spikes, or for the driven spikes either turned in wardly to-overhang the rail flange, or outwardly so that they cannot, engage therewith. On'the opposite side, the base outside of the hook shoulder may be slightly channeled as shown in' Figs. 1, 2 and 3 the v I better to receive the screw spike heads.

I prefer the form of tie-plate shown in Figs. 5, 6, 7 and 9 where the spikes are arranged outside of the shoulders on both side of the rail or on the outside, or reversed, that is alternately on the inside and outside. Some prefer this last arrangement, but I prefer to arrange them on the inside,- for then they not only hold the rail down in place onthe rail-bed of the tieplate, but also prevent it from upsetting or rolling over, for it is the pressure from within that tends to upset the rail.

With the hooks reversed the guard-spikes are not needed, but with all the hooks on the inside it is important-to .add guard spikes.

The advantages of my spaced hook might be obtained to some extent by providing onlyva single shoulder on the tie-plate and that arranged on the outside but such a structure would never be recommended, for there should always be a shoulder of some sort to engage with the rail-edge on the opposite side. This might be a straight shoulder as here shown, but I' do not limit myself thereto or to my peculiar form of shoulder, for Ihave devised a tie-plate in which the opposite shoulder is alsoprovided with a hook.

My tie-plate may be made by any suitable method, or means, for instance cast, but

preferably rolled, whereby many tie-plates sides, and there is no direct engagement between the rail and spikes, so that there is little if any tendency to draw the latter. Where the spikes engage the rail, as in the usual method, they ,do not hold permanently. but always loosen owing to the wave motion, and often are much displaced. If again driven home the engagement with the wood fibre is weak. But this loosening of the spikes .is avoided by the tie-plates be balanced that is of equal my indirect method of'securing the rail, in

which the spikes secure the tie-plate, and the tie-plate, by means of its hook. secures the rail. This is one of the advantages obtained with my. peculiar spaced hook, for

' while the s ikes might be arranged in the same way with a tie-plate having a hook fitting the rail-flange tightly ,yet sue a hook has not been, and would not be, used:

to any extent for it would not allow free wave motion nor reduce the disturbancetial risin r of the rail and anv 'reat effect on the guard-spike.

The hooks may be arranged on the Inmay be producedat one operation ina single bar, complete with hooks, spaces, d epressions and rounded shoulders. 'Such a bar, or slab, is shown in Fig. 8. Thespaces between the hooks, and the aligned groovespermit easy separation of the individual plates by shearing, also without danger of distorting the hooks.

While not essential, yet it is desirable that width on each side of the longitudinal axis of the rail-bed between the shoulders whereby they are better adapted for reversal-aml otherwise more convenient for use.

Having described my invention I claim,

1. A tie-plate for railways comprising a base having a shoulder on its upper surface, said shoulder being provided with a hook adapted to extend over the edge of the railflange and engage therewith to prevent up ward movement of the rail but spaced therefrom slightly, said hook being shorter longitudinally than the tie-plate and having a curved under surface forming a short surface for engagement with the rail.

2. tie-plate for railways com .)rising a base having a shoulder on its upper surface. said shoulder being provided with a he arranged to extend over the edge of the rail flange and engage therewith to prevent ma-- terial upward movement of the rail and to leave a space between the hook and the rail flange to permit slight upward movement of the rail. when the train is passing, said shoulder extending from end to end of the twplate and said hook being shorter-in a flat bed, said shoulders extending from end to end of the tie-plate, one being straight and the other provided with a hook substantially shorter longitudinally than its shoulder and arranged to exten over the edge of the rail flange for engaging therewith and preventing substantial upward movement of the rail, said hook having a curved edge. and having its lower surface formed in a flat curve to afford a surface for engaging with the rail flange substantially shorter than the hook, said hook being arranged to leave a small space between its engaging surface and the rail flange to avoid rigidity and permit slight upward movement of the rail when the train is passing.

4. A tie plate for railways having two integral parallel shoulders on its upper surface spaced to receive the rail between them snugly but freely, the surface between said shoulders-forming a flat-bed for the rail base, one of said shoulders being straight and the other having a hook adapted to extend over the edge of the rail flange and spaced therefrom a small distanceto permit a slight upward movement of the rail, sald upper surface being provided with a slight depression at its ends between the shoulders to prevent contact between the under surface of the rail and the edges of the end of said surface, the ends of the flat bed being formed with rounded edges.

5. A tie plate for railways adapted to prevent disturbance of the spikes and having two shoulders on its upper surface one shoulder being straight and the other being provided with a hook adapted to extend over the rail-flange edge and spaced therefrom a small distance' to avoid rigidity and to permit a slight upward movement of the rail, said tie-plate being provided with spike holes outside of each shoulder, for

securing the tie-plate to the tie by spikes entirely out of contact with the rail.

' 6. A-tie-plate for railways adapted to prevent disturbance of the spikes and having two shoulders on its upper surface one shoulder being straight, and the other provided with a hook adapted to extend over the rail-flange edge and spaced therefrom a small distance to avoid rigidity and to permit a slight upward movement of the rail, said tie-plate being provided with spike holes outside of each shoulder and with a spike-hole through the straight shoulder for a guard spike to engage with the edge of the rail flange.

7. A tie-plate for railways comprising a base provided with a bearing portion for the rail base, said bearing portion being formed with marginal depressions at each end of the bearing surface of a form to provide rounded off marginal edges on the bearing surface substantially as described.

8. As a new article of manufacture a rolled bar having a base portion formed with longitudinally extending and oppositely arranged flanges on the upper surface thereof, one of said flanges being formed with turned over hooked members said flanges being spaced to provide bearing portions for a rail base therebetween and said bearing portions being separated by depressions having rounded off edges and said hooked members being spaced apart and positioned relative to the respective bearing portions substantially as described.

9. A tie-plate for railways having two integral parallel shoulders on the upper surface spaced to receive the rail flange between them, one of said shoulders being straight and the other having a hook adapted to extend over the edge of the rail flange and spaced therefrom a small distance to permit a slight upward movement of the rail, and marginal securing portions on the outer sides of the shoulders and said tieplate being formed to extend substantially an equal distance on both sides of the central axis of the rail bed substantially as described.

10. A tie-plate for railways comprising a base having a shoulder on its upper surface, said shoulder being provided with a hook adapted to extend over the edge of the rail flange and engage therewith to prevent upward movement of the rail flange, said hook being shorter longitudinally than the tieplate and formed with a curved under surface providing a short surface for contact with the rail.

11. A tie-plate for railways comprising a base having a shoulder on its upper surface, said shoulder providing a' hook portion adapted to extend over the edge of the rail flange and engage therewith to prevent upward movement of the rail and said hook being formed with a convex under surface providing a short surface for contact \vitl the rail.

12. A tie-plate'for railways comprising a base having an integral shoulder on its upper surface extending from end' to end of the tie-plate, and said shoulder being provided at about its middle with a hook shorter in longitudinal extent than the shoulder and arranged to extend over the edge of the rail flange, to leave a space between the hook and the flange to permit slight upward movement, but to prevent material upward movement, of the rail.

13. A tie-plate for railways comprising a the rail and said tie-plate being of equal width on each side of the longitudinal axis of the rail bed.

14. A tie-plate for railways having a base and'two integral parallel shoulders on the upper surface thereof including between them a bearing surface for the rail, the ends of said surface being formed with marginal depressions of a .form to provide rounded ofl'edges so that a non-sharp edge will come in contact with the under surface of the rail,- and one of'the shoulders onl Y having an in.- wardly extending portion, t e other shoul- I der being straight.

15. A tie-plate for railways comprising a base having a shoulder on its upper surface. said shoulder providing a hook adapted to extend over the edge of the rail flange and engage therewith toprevent upward movement' of the rail flange, said hook being shorter longitudinally than the tie plate and formed with a curved under surface providing a short surface for contact with the rail and said tie-plate being formed with marginal depressions at each end .of its bearing surface of a form to provide rounded off edges on the bearing surface, substantially as described.

16. A tie-plate for railways comprising a base having opposite shoulders on its upper surface and spaced to receive the rail between them, at least one of said shoulders being provided with a hook adapted to extend over the edge of the rail flange and formed with a curved under surface providing a short surface for contact with the rail and said tie-plate being provided with spike holes outside of each shoulder for indirectly 46 securing the tie-plates to the tie by spikes out of contact with the rail.

17. A tie-plate for'railways comprising a base having a shoulder on its upper surface, said shoulder having an integral hook por- 50 tion adapted to extend over the edge of the rail flange and spaced therefrom and said hook portion being shorter in longitudinal extent than the shoulder and of arcuate contour tapering to a reduced free edge thereby to have a limited area of contact with the rail.

l8.'A tie-plate for railways comprising a base having oppositely positioned shoulders on its upper surface, one of said shoulders having an integral hook portion adapted to extend over the edge of the rail flange and spaced there-from, said hook portion being shorter in longitudinal extent than the shoulder and of arcuate contour to have a limited 05 area of contact-with the rail and said hook being arranged to leave a small space between its engaging surface and the rail flange to permit slight upward movement of the rail with relation thereto, and said op- 10 posite flange being perforated to receive securing spikes and being of such-height as to similarly space the spike heads from the rail flange substantially as described.

19. A tie-plate for railways comprising a base having a shoulder on its upper surface, said sho der having an integral hook portion adapted o extend over the edge of the rail flange and said hook portion being shorter in longitudinal extent than the shoulder and of arcuate contour and having its under surface of convex curvature thereby to provide for a short surface of contact with the rail flange.

In testimony whereof I have signed my 35 name to this specification.

FRANKLIN 4E. ABBOTT.

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