US622965A

US622965A - Tie-plate

Info

Publication number: US622965A
Authority: US
Publication date: 1899-04-11
Anticipated expiration: 1916-04-11

Description

No. 622,965. Patented Apr. I899. A. monmson.

TIE PLATE.

(Application filed Oct. 25, 189B.)

' (No ModeL) WITNESSES INVENTOR UNITED STATES PATENT ()FFICE.

ANDREW MORRISON, 0E PITTSBURG, PENNSYLVANIA.

. TIE-PLATE.

SPECIFICATION formingpart of Letters Patent No. 622,965, dated April 11, 1899. Application filed October 25, 1898. Serial No. 694,514. (No model.)

v panying drawings, forming part of this specification, in which- Figure 1 is a top plan View of one form of my improved plate, and Figs.2 and 3 are cross-sections showing different forms of the thinned side extensions.

My invention relates to tie-plates, and is designed to prevent the rocking action which naturally takes place as the load comes upon one side of the plate and as it leaves the other side.

To that end it consists in a plate having thinner extensions projecting laterally from its side edges, these extensions being adapted to prevent the rocking action by giving a support on each side beyond the bearing-point of the rail upon the plate.

In the drawings, in which I have shown my invention as applied to a plate having ribs or claws, 2 represents the plate-body, having the thinner side extensions 3 3, these being preferably beveled or inclined upon their upper faces. The extensions are of sufficient width, so that their flat bottom faces will give sufficient bearing upon the tie to prevent the rockin g of the plate as the load comes above either edge of the plate-body.

I have shown the plate as provided with depending flanges 4 4, which extend longitudinally of the plate and are arranged to enter the tie longitudinally of the grain; but it is evident that the plate may be provided with other forms of flanges or ribs or with a plain bottom face without departing from my invention, which lies in the use of the thinner flanges or extensions projecting from the edges of the plate and arranged to reduce the rocking action. 7 V

The advantages of my invention will be apparent to those skilled in the art, since the distributing area of the plate upon the tie is considerablyincreased without increasing the bearing-surface of the rail upon the plate, while the extensions prevent the loosening of the plate by reason of its rocking sidewise as the load passing along the rail is brought first over one edge and then over the other edge of the plate.

' I claim- I 1. A tie-plate, having extensions projecting from its side edges, said extensions being thinner than the plate-body, and arranged to lie upon the upper face of the tie and reduce the rocking action of the platewhen in place; substantially as described.

2. A tie-plate, of substantially the same thickness throughout its body, having side extensions with inclined or beveled upper faces, said extensions being arranged' to lie upon the upper face of the tie and reduce the rocking action of the plate when in place; substantially as described.

3. Atie-plate having depending flanges and provided with thinner side extensions arranged to lie flat upon the upper face of the tie, and reduce the rocking action of the plate when in place; substantially as described.

In testimony whereof I have hereunto set my hand.

ANDREW MORRISON. Witnesses;

H. M. OORWIN, GEORGE E. BLEMMING.