US1587751A - Tie plate - Google Patents

Description

- June 8 1926.

W. S. BOYCE TIE PLATE Filed March 19, 1926 U3 a? WW Patented June 8, 1926.

NITED STATES WILLIAM S. BOYCE, CHICAGO, ILLINOIS.

TIE PLATE.

Application filed March 19, 1926 Serial No. 95,823.

as illustrated in reissue'Letters Patent No..

15,989, issued to me and dated January 27th,

The object of the invention is to provide a tie plate of this general type, which will be of reduced weight, without impairing its strength and efiiciency.

In the accompanying drawings Figure l is a plan top view of a plate embodying the present invention.

Figure 2 is a bottom plan view of the same.

Figure 3 is a longitudinal, sectional view of the same, enlarged, the section being taken in the Vertical plane indicated by the dotted line 3-3 on Figure '2.

Figure 4 is a side elevation of a modified form.

Figure 5 is a transverse section of the plate, enlarged, the section being taken in the vertical plane indicated by the dotted line 55 of Figure 3.

Figure 6 is a transverse sectional view of the modified form, the section being taken in the vertical plane indicated by the dotted line 66 on Figure 4.

In said drawing, the late is indicated as a whole by the letter and comprises a top rail bearing surface 1 and a rail abutting shoulder flange 2, which extends transversely across the top of the plate. The rail bearing surface -1 extends from the base of the flange 2 towards the other end of the plate, so that one fiange of a rail will be at the base 3 of the flange 2 and the other at or about the point indicated on Figure 1 by the dotted line 4. The body of the plate is thickest along the lines 3 and 4.

On the bottom of the plate and directly below the lines 3 and 4, the metal of the plate extends transversely and forms relatively narrow, initial tie-bearing surfaces 5, each of which is, preferably, provided with a shallow projection 6 havin a rounded edge. Each end 7 of the plate is recessed or cut away, as indicated at 8, 8, the recess extending from the end to the initial tie bearing surface 5.

Intermediate the initial tie bearing surfaces 5, 5, is a central or median recessed area 9, the recess being curved longitudinally and flat transversely, as indicated at 10 and 11, respectively. \Vithin the median recess are one or more ribs 12 which extend longitudinally of the plate. The surface of the end recesses 8 may be parallel with the plane of. the initial tie bearing surfaces 5, but I prefer to have them inclined upwardly as illustrated.

When the plate is set upon the tie, a slight tap will cause the shallow projections 6 to initially contact with and enter the surface of the tie very quickly, holding ,it against accidental shifting while the rail is being set and the plate is given an initial seating upon the surfaces 5, 5. When finally seated, the ultimate tie bearing surfaces will be the end surfaces 8, 8, the surfaces'5, 5, and the arched and flat surfaces of the central or median recesses.

The plate illustrated in Figures 4 and 6 is the same as the plate just described, with the exception that the initial tie bearing area, indicated in Figure 4 by the dotted line 13, is relatively narrower than that; shown at 5 in Figure 3, and the shallow projection 14 has a pointed edge instead of a rounded edge, as shown on the projection 6.

By taking out a relatively large amount of metal in the central area 9 of the plate bottom, by making the bottom surface of this central recess curved or arched longitudinally at 10 and flat transversely at 11, of the plate, and by placing the ribs 12 in this median recess 9, I am enabled to materially lighten the plate without impairing1 its strength or holding power on the ral I I claim as my invention 1. A tie plate having its median and its end portions cut away and separated by relatively narrow, tie bearing surfaces to initially seat on the tie, the bottom of the median cut away portion being arched longitudinally and being flat transversely of the plate,

2. A tie plate having its median and its end portions cut away and separated by relatively narrow, tie bearing surfaces to initially seat on the tie, the bottom of the median cut away portion being arched longitudinally and being fiat transversely of the plate, and a longitudinally extending rib in the median cut away portion.

3. A tie plate having its median and its end portions cut away and separated by relatively narrow, tie bearing surfaces to initially seat on the tie, the bottom of the median cut away portion being arched longitudinally and being fiat transversely of the plate, and a plurality of spaced apart ribs extending longitudinally in the central portion between the initial tie bearing surfaces.

4. A tie plate provided on its top with a rail bearing surface, and provided on its bottom with a recessed, median portion having a fiat bottom surface extending from side to side of the plate and with a longitudinally extending rib depending from the recessed bottom.

5. A tie plate provided on its top with a rail bearing surface and provided on its bottom with end and median recessed areas extending transversely of the plate, ribs inthe median recess extending longitudinally of 4 the plate, the surface of the median recess intermediate the ribs being flat, and the body I of the plate being of increased thickness under the margins of the rail bearing surface.

' 6. A tie plate provided on its top with a rail bearing surface, and on its bottom with a recessed portion below said rail bearing-surface, the bottom of the recess being arched longitudinally and flat transversely of the plate.

7. A tie plate provided on'its top with a rail bearing surface, and on its bottom with a recessed portion below said rail bearing flange and a rail bearing surfaceextending from said flange towards the other end of the plate, and having on its bottom a median recessed portion directly below the rail bearing top surface, a recessed portion located transversely of the plate and extending from each end thereof inwardly towards the me-,

dian recess, a relatively narrow, transversely extending, initial tie-bearing surface separating the median recess from each end recess, the body of the plate being of increased thickness through said initial tie-bearing surfaces, the surface of the median recess being arched longitudinally and flat transversely of the plate, and a plurality of ribs in said recess extending longitudinally of the plate between the initial tie bearing surfaces.

In testimony thatI claim the foregoing as m invention I aflix m si nature this y a 7 17th day of March, 1926..

WILLIAM S.' BOYCEJ

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