US410258A - Edwin d - Google Patents

Description

v (No Model.)

B D WASSELL ROLLS FOR ROLLING BARS INTO SHEETS. No. 410,258.

Patented Sept. 3', 1889.

l mv

- VVZZness 28 n mans Phmo-Liihognpher. wan-in n. c,

UNITED STATES PATENT OFFICE.

EDWIN D. wAssELL, or PITTSBURG, PENNSYLVANIA, AssIeNoR' To ANN ISABELL WASSELL, or SAME PLAoE.

ROLLS FOR ROLLING BARS INTO SHEETS.

SPECIFICATION forming part of Letters Patent No. 410,258, dated September 3, 1889.

Application filed January 28, 1889- Serial No. 297,861. (No model.)

To all whom it may concern.-

Be it known that I, EDWIN D. W-AssELL, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Rolls for Rolling Bars into Sheets; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to rolls for reducing bars into sheets or plates, and has for its object the construction of such rolls that will not strain or disintegrate the fiber of the metal while a bar is being distended laterally and reduced into a sheet or plate.

It has been proposed to reduce blooms, bil- 1ets,ingots, &c.,into sheets, plates, strips, 850., by subjecting the former to rolls which widen them by cutting grooves in the upper and lower side of the bloom, billet, or ingot from the first pass through the rolls until the metal ,has been reduced sufficiently in thickness to flatten it into a sheet, plate, or strip. This way of rolling, however, tends to separate the fiber of the metal, for the reason that it is subjected to lateral strain throughout the entire operation of rolling and as a consequence any gaps or spaces in the bloom or billet are spread or increased in size.

Practice has long since demonstrated that the best merchant bar steel or iron is produced by turning the bloom, billet, or ingot frequently, and presenting the sides thereof alternately to the pressure of the rolls until a predetermined thickness has been reached and a solidified mass of metal produced. 'Thebar is then reduced in another pass of the rolls to any desired form or thickness. It is my purpose to operate upon bars of any given dimensions produced by the old Way of rolling, and widen or distend them laterally into plates or sheets without weakening or disintegrating the fiber.

The in vcntion will be hereinafter described, and particularly pointed out in the claims.

In the accompanying drawings, which form a partof this specification, Figure 1 represents afront elevation of a pair of rolls. Figs.

2, 3, 4., and 5, respectively, represent a crosssection of a bar after it has passed through the several passes of the rolls on an enlarged scale.

Reference being had to the drawings and the letters thereon, A indicates the upper and B the lower roll. In the first pass 0 the upper roll is provided with a series of projections or beads a, and the lower roll presents a smooth cylindrical surface. In the second pass Dt-he upper roll is provided with beads a, which correspond with those of the first pass, and the lower lpll is provided with beads b, which alternate with or work between the beads a of the upper roll. Both of these passes, it will be observed, are of the same width, while the passes E F are wider than C E, and F is Wider than E, and the upper and lower rolls in both of the latter two passes presentplain smooth cylindrical surfaces. Each pass is provided with collars c on the lower roll,which coincide with the grooves 01 in the upper roll.

The operation is as follows: A bar being.

fed into the pass 0, the beads or on the upper roll out grooves e in the upper side of the bar, displacing the metal and causing it to fillthe spaces between the beads a, and producing the bar G. (Shown in cross-section in Fig. 2.) In this pass the lower roll performs no work other than to hold the bar up whilethe upper roll is cutting the grooves e. The bar is then fed into the pass D, the grooves e being placed under the beads CL and the bar held against any lateral movement, while the beads 19 on the lower roll out the grooves f in the lower side of the bar intermediate of the grooves e on the upper side, displacing the metal and filling the spaces between the beads b, and forming the corrugations shown in the bar II in .Fig. The corrugated bar is then conducted through the pass E, and partly fiattened and distended laterally, as shown at I in Fig. 4:, and is then conducted through the pass F, and further flattened and distended, as shown at K in Fig. 5.

The number of passes in the rolls may be increased, if desired, so long as the same operation upon the metal being worked is maintained without departing from the spirit of my invention. In the rolling of the metal from the bar to the plate or sheet, as described, the metal is gradually distended and the fiber of the metal retained intact.

Having thus fully described my invention,

what I claim is upper roll in the first pass is provided with a series of bead like projections and the lower roll is a plain cylinder, the second pass of the same width as the first, and the' upper roll having projections like those of the first pass for holding the bar, and bea d-like projections on the lower roll alternating with or intermediate of the projections on the upper roll for corrugating the bar, and a pass or passes for flattening and distending the bar laterally, substantially as set forth.

In testimony WhereofI affix my signature in presence of two witnesses.

EDWVIN D. WVASSELL.

\Vitn esses:

J. B. HYNDMAN, Jos. L. BERRY.

Images