US400844A - Pettbs - Google Patents

Description

' 2 Sh eta-Sheet 1.'

(No Model) e ROLLING MILL.

No 400,844. Patented Apr. 2, 1889.

Mfr/M55555:

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(No Modem 2 Sheets Sheet 2.

J. GUEST. ROLLING MILL.

No. 400,844. I PatentedApr'. 2, 1889.

WI 2 2155525: In ve 121-:

NITED STATES PATENT OFFICE.

JOSEPH GUEST, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO FERDINAND PROTZMAN, SR., SIDNEY M. YOUNGS, FRED E. YOUN GS, AND RALPH IV. CARROLL, ALL OF SAME PLACE.

ROLLING-MILL.

SPECIFICATION forming part of Letters Patent No. 400,844, dated April 2, 1889.

Application filed August 16, 1888. Serial No. 282,881. (No modeL) To aZZ whom, it 77260; concern.-

Be it known that I, JOSEPH GUEST, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Rolling Metals; and

" I do hereby declare the following to be afull,

clear, and exact description of the invention,

such as will enable others skilled in the art to which it'pertains to make and use it, referonce being had to the accompanying drawings, which form part of this specification.

Myinvcntion relates to an improvement in rolling metal; and it consists in, first, rolls provided with suitably-shaped grooves for breaking down iron or metal fromthe bloom, pile, or a double-headed rail into a series of W or M shaped angles, and other suitablyshaped grooves, through which the W or M shaped angles are passed until the iron or metal given the form of two angles in a single piece, and which angles are passed through a groove provided with cutting-edges, where they are separated into two distinct angles; second, rolls provided with suitablyshaped grooves for breaking down iron or metal from the bloom, pile, or double-headed rail into a series of W or M shaped angles, and other suitably-shaped grooves, through which the W or M shaped angles are passed 0 until the iron or metal is given the form of a single angle, which will be more fully described hereinafter.

The objects of my invention are to so shape the rolls that two separate and distinct an- 3 5 gles are formed at the same time from a single bloom, pile, or a double-headed rail, and in from five to seven passes, where to accomplish the same amount of work by the process commonly used from twenty to twenty-eight 0 passes are required, thus greatly ehea-pening the cost of production and greatly increasing the capacity of any mill using my process; second, to make practical the reworking of old double-headed rails into angle-irons of the sizes most in use.

Figure 1 represents a cross-section of an ordinary iron pile or steel ingot. Fig. 2 represents a cross-section of a double-headed rail. Fig. 3 represents a pair of my rolls, and showing the progressive stages in the manufacture of angle-irons. Fig. 4 shows a front elevation of a pair of rolls especially adapted for forming single angle-irons from double-headed rails.

A square or rectangular iron pile or steel ingotsuch as is shown in Fig. 1having been previously heated in any suitable manner, is passed through the first groove or pass, A, of the two rolls shown in Fig. 3, and which form deep angular longitudinal grooves along the 00 bar, slightly spreading it laterally to give it the form shown. The bar is then passed through the groove in pass B, where it assumes the shape in cross-section, as shown, and which resembles the letter W or M. The bar is then passed through the grooves D and E, which are provided with a cutting-edge, G, which separates the two halves of the W or M shaped bar from each other. The two bars are then either passed again through the grooves D and E in the reverse ordert'. 6.,

passing the bar which came through the groove D into the groove E and the bar which came through the groove E into the groove D, and thus roll down or remove any fin or wire edge which might be left by the cuttingedgesor they may be passed through additional finishing-grooves placed in the rolls for the purpose of a finer finish, if desired, thus making two finished angles of like shape in cross-section with less time and labor than is ordinarily required for niaking one. By this method of reducing the metal from the pile or ingot into angleirons it is gotten down to the proper thickness and size for makingtwo angles at a time in but five or six passes through the rolls, while by the process commonly used from ten to fourteen passes are required to roll one angle, and to produce two angles requires from twenty to twenty-eight passes of the metal through the rolls, While the same thing is here accomplished in but five or six passes. In making round-back angles the bottom of the grooves are given the curvature required on the back of the angle. 5 In rolling angles from double-headed rails the first pass, A,in the breaking-down rolls is not required, as the rail will readily take the form of the second pass or groove, B. In rolling the larger angles from a double-headed rail the second, third, and Fourth passes are necessarily modiiied, as the amount of metal in the rail will permit of forming but one angle at a time. The rail is put through the pass or groove K, Fig. hwhieh givesita similar form to that of the first pass in Fig. 3, resembling the letter W or M. The iron is then passed through the groove 01' pass L and the grooves P and (2, which hrings the metal to the fin ished illlfglt", mquiring but four or, in some cases, live passes from the rail, while the proeess ('ommouly used is not: adapted to working upon old rails, but requires from ten to fourteen passes of the iron from the bloom or pile to make a finished angle.

Tn all the drawin herewith I have shown the rolls as what are termed two-highg but my proeess is equally adapted to work three high, and in most cases I prefer to use the threeh igh system.

While I have given a stated numher of passes lfrom four to seven, I do not wish to limit myself to the precise number stated, as it is evident that the Varying demands of the trade l'or dillerent-sized angles 'l1l2t \'l'((1llll( some variation from the nu mher stated.

'Whilethisproeess lSiMlZLPtOtl and espeeiall y designed for working old double-headed rails into angle-irons, it is also adapted to rolling all sizes of angles from the bloom or pile, with a great saving in time and labor.

llavii'ig thus described my invention, I claim 1. The combination of two rolls provided. with a series of W or M shaped grooves, through whieh the metal is si'ieeessively passed, so as to first break down the metal, and then form it into angle-iron, substantially as shown.

52. The COIllblllfldLlOil of two rolls provided with a series of W or M shaped grooves for breakii'lg down the metal and forming it; into an gle-iron, and cutters for separatin the two halves of the double angle-iron, substantially as set forth.

In testimony whereof I affix my sigl'lature in presence of two witnesses.

J OSEPII GUN, "l.

Witnesses:

L. 13. '1). Reese, F. E. 'YoeNos.

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