US616798A

US616798A - morrison

Info

Publication number: US616798A
Authority: US
Publication date: 1898-12-27
Anticipated expiration: 1915-12-27

Description

No. s|s,79a. Patent ad Dem-27, I898.

A. MORRISON. RDLLING TI E PLATES.

- (Application filed Apr. 1, 1898.) (No Model.) 3 Sheets$heet l.

WITNESSES I INVENTOR A. Monmsou. ROLLING m PLATES.

(Applicatign fllad Apr. 1, 1898.)

No. amass. Patented Dec. 27, I898.

(No Model? 3 Shets-Shaet 2.

F 'yfi F' .8. 4 y f:

2 I wmussses' invsu'ron mm mm UNITED STATES PATENT FFICE.

ANDREI/V MORRISON, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE I DILVVORTH, PORTER & COMPANY, OF SAME PLACE.

ROLLING TIE-PLATES.

SPECIFICATION forming part of Letters Patent No. 616,798, dated December 27, 1898.

Application filed April 1, 1898. Serial No. 676,103. (No model.)

To all whom it may concern.-

Be it known that I, ANDREW MORRISON, of Pittsburg, inthe county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Rolling Tie- Plates, of which the following is a'full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which Figures 1 to 8, inclusive, are diagrammatic views showing the shapes of the successive passes through which the metal is moved in the rolling of the tie-plate blank, and Figs. 9 and 10 are front elevations of the rolls which I have preferably employed.

My invention relates to the making of tieplates by rolling along bar of the proper crosssection from which the tie-plates are out; and it consists in an improved set of passes,whereby long flanges or claws may be rolled along one face of the plate and set in a short distance from its side edges. I-Ieretofore in the rolling of these bars it has been found impossible to produce ribs or claws greater than five-eighths of an inch in depth, while by my improved system these flanges may be rolled of almost any desired depth.

In the drawings, Fig. 1 shows the first pass, wherein the plate 2 is formed with bumps or ribs 3 3 and with outwardly-extending flanges or lips 4 4. In the second and third passes (shown'in-Figs. 2 and 3)the plate is elongated and made thinner both in the body and the lips. In the fourth pass (shown in Fig. 4) the lips are bent more nearly to a right-angled position with the body, while in the fifth pass (shown in Fig. 5) they are brought to this right-angled position. The body of the plate having been brought to about'the proper thickness in the fifth pass,with the flanges or claws extending from its side edges at right angles, I then proceed to increase the width of the plate, forcing the metal in the bumps outwardly and upwardly by lateral pressure thereon, so as to widen the plate and at the same time prevent the shortening of the flanges. This action is begun in the sixth pass, (shown in Fig. 6,) carried on in the seventh pass, wherein the base portions of the flanges are brought into parallelism, and completed in the eighth pass, (shown in Fig. 8,) wherein the bumps are entirely removed by forcing them into the body of the plate and into the flanges. I am thus enabled to produce a tie-plate bar having the cross-section shown in Fig. 8, with flanges of any desirable depth and set inwardly from the side edges of the plate.

. It will be noted that the metal for widening the plate is obtained from the bumps and that such metal is forced outwardly by lateral pressure. A vertical or flattening pressure may be brought upon the bumps simultaneously with the lateral pressure, if do sired; but this lateral pressure is essential for obtaining the widening of the plate ac= cording to my invention. 7

In Figs. 9 and 10 I show one method of ar ranging the collars of the rolls to give the desired passes, these passes being shown at a, b, c, d, e, f, g, and h.

The advantages of the invention will be apparent to those skilled in the art, since by it flanges of any desirable width or depth may be formed, whereas these flanges were formerly restricted to a depth of about five-eighths of an inch or less on account of the inability to form longer flanges during the rolling. The size and contour of the passes, especially that of the first four or five passes, may be varied without departing from my invention, since I consider myself the first to roll the tie-plate bar of narrower width than the final bar, with flanges projecting from its side edges and opposite bumps or ribs, and then widen the plate by forcing the metal of the bumps outwardly by lateral pressure into the body and flanges,so as to prevent substantial short ening of the flanges and to extend the plates sidewise beyond the flanges.

- I claim 1. In the rolling of tie-plate bars, rolls hav ing preliminary passes arranged to form a plate with projecting flanges, and bumps op posite the said flanges, and succeeding passes arranged to press laterally against the bumps and force them outwardly beyond said flanges to widen the plate; substantially as described.

2. In the rolling of tie-plate bars, rolls hav ing preliminary passes arranged to form lat erally-projecting flanges upon the plate, and bumps opposite to said flanges, intermedi ate passes arranged to force the flanges into a substantially right-angled position at the loo side edges of the plate, and final passes arranged to press laterally against the bumps and force them outwardly beyond said flanges to Widen the plate; substantially as described.

3. In the rolling of tie-plate bars, rolls hav ing a set of eight passes, the first four passes being arranged to reduce the thickness of the plate and form angular flanges at its edges, and oppositely-located bumps, a fifth pass arranged to straighten the flanges into a rightangled position, and the three final passes being arranged to force the metal of the bumps into the body of the plate so as to widen it beyond the flanges and prevent substantially shortening of the flanges, substantially as described.

4. The method of rolling tie-plate bars con= sisting in gradually thinning the plate-body and forming laterally-proj ectin g flanges along theside edges, with bumps located opposite thereto, forcing said flanges into a right-angled position at the edge of the plate and pressing laterally against the bumps so as to force them outwardly and Widen the plates beyond theflanges; substantially as described.

In testimony whereof Ihave hereunto set my hand.

ANDREW MORRISON.

\Vitnesses:

C. E. MAcKoWN, G. I. HOLDSHIP.