US242007A - Roll for rolling angle-iron - Google Patents

Description

(N0 d -1 2Sheets-Sheet 1. "J. L. LEWIS. R011 for.Rolling Angle Iron.

2 Sheets-Sheet 2.

I e l 2. Nn W Du n 1 In 0 r 0 f 1 1 o R (No Model.)

Patented May 24, 1881.

VL- N N- PETERS. Phalouflwgnphor. wamh l PATENT OFFICE.

JOHN L. LEWIS, OF PITTSBURG, PENNSYLVANIA.

ROLL FOR ROLLING ANGLE-IRON.

SPECIFICATION forming part of Letters Patent No. 242,007, dated May 24, 1881. Application filed March 3, 1881. (No model.)

To all whom it may concern Be it known that I, JOHN L. LEWIS, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Angle-Iron Rolls; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same,

IO reference being had to the accompanying drawings, which form a part of this specification.

Figure 1 is an elevation of my new rolls; Figs. 2 and 3, their product. Fig. 4 is an elevation of my rolls; and Figs. 5,6, and 7, their product.

This invention relates to an improvement in angle-iron rolls, and has reference especially to economy of space in the construction of a set of rolls, or of a whole train, whereby more sizes can be made in a given space of roll-surface than is at present done.

As at present constructed, rolls for rolling angle-iron are made with a separate and distinct series of grooves for each size of angle- 2 iron to be produced. Such rolls are expensive and necessitate the use of a large space for a train capable of making a varietyof sizes.- Besides, in a pair of rolls having two sets of.

grooves, if one set wears out before the other,

0 the perfect set becomes useless. These grooves are always made flatwise, and each set coniprises one or more flattening or roughing grooves for the billet, several shaping-grooves for forming the angle, and a finishing-groove.

3 5 My invention consists in constructing a pair of angle-iron rolls with the usual roughing.

groove, the intermediate shapin ggrooves, and

the finishing-groove, and, in addition, one or more grooves which I call edging-grooves,

substantially as hereinafter described, wherebyI am enabled to produce from one pairof rolls,

with but one set of shaping-grooves, two or more sizes of an gle-iron, as will be seen.

In a pending application I have described 5 and claimed a peculiar construction and arrangement of grooves for avoiding cracking and injurious warping and bending of the bar in the production of angle iron by rolling.

While this peculiar formation and arran gement c of grooves is not essential to the practice of my present invention, I will illustrate it in connection with such grooves for the sake of uniformity.

In the drawings, A B designate a pair of angle-iron rolls constructed in accordance with the principles set forth in my said pending application, having the roughing-pass l, in which the billet is flattened and passes through the first stage of preparatory shaping, one or more shaping-passes, 2 3 4 5, and a finishing-pass, 6, as shown. Thus constructed, the rolls A B would have only the usual capacity-viz, one size of angle-iron; but by the construction shown in Fig. 1 it will be observed that an additional groove, a, is made between passes 1 and 2. This I call an edging-groove. It is cut in the rolls at right angles to the position of pass 1, half in each roll, and, like pass 1, it presents the double convex a; x; but, instead of a corresponding opposite face, I make the sides straight. It will be further observed that groove a, measuring the longest way, is not as large as groove 1. Consequently if, after passing the billet through groove 1, I turn it on edge and pass it through groove to, it will be reduced considerably in width. Now, taking in consideration the fact that in rolling angle-iron with proper attention to draft the edge of the bar is not materially affected and the width of each side changed but little from the first to the finishing pass, my object will be readily understood, for if I pass the ML let, as ordinarily, through grooves 1, 2, 3, 4, 5, and 6, I produce the bar of an gle-iron exhibited in section at Fig. 2; but if I pass the billet through the groove 1, and then through the V edging-groove a before going through pass 2, and then proceed as before, I produce the bar exhibited in section by Fig. 3.

It will thus be manifest that with an ordinary set of an gle-iron rolls, by the introduction of the edging-groove a, I am enabled to produce two distinct sizes of finished bar.

In Fig. 4 I have a similar set of grooves, 1, 2, 3, 4, 5, and 6, and in addition two edginggrooves, 11 c, groove b being narrower than groove 1, and groove 0 narrower than groove I), the thickness of the three being about the same. In this arrangement I produce three sizes of bar. Passes 1, 2, 3, 4, 5, and 6 produce the size shown by Fig. 5; passes l, b, 2, 3, 4, 5, and 6 produce that shown by Fig. 6; and

passes 1 b c 2 3 4 5 6 produce the size shown by Fig. 7. Thus with but two edging-grooves and the one set of roughing, shaping, and finishing grooves I am able to finish three dis tinct; sizes of angle-iron, where hitherto either three pairs of rolls or three sets of grooves, each having a full complement of the usual grooves, have been found essential.

The saving of constructive cost and the economyofspace by my invention are obvious, while the convenience and increased capacity need no argument to set them forth.

I claim as my invention- In angle-iron rolls, the combination, with the usual flat roughing, shaping, and finishing 15 grooves, of one or more edging-grooves, substantialb as described, said edging groove or grooves being successively narrower than the roughing-groove.

In testimony that I claim the foregoing as my own I have hereto afli xed my signature in presence of two witnesses.

JOHN L. LEWIS.

Witnesses:

T. J. MCTIGHE, T. J. PATTERSON.

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