US787612A - Method of shaping metallic ingots by transverse rolling. - Google Patents

Description

PATENTED APR. 18, 1905.

LQD. DAVIS. METHOD OF SHAPING METALLIC INGOTS BY TRANSVERSE ROLLING.

APPLICATION FILED SEPT. 3. 1901. v

2 SHEETSSHEET l.

UNITED STATES Patented April 18, 1905.

PATENT OFFICE.

LEONARD D. DAVIS, -OF ERIE, PIEINJFISYLVANIA.

METHOD OF SHAPING METALLIC INGOTS BY TBANSVERSE ROLLING.

SPECIFICATION forminggpart of Letters Patent No. 787 612, dated April 18, 1905.

I Application filed September 3,1901. Serial No. 74,169-

To all Mil b 0771, it may concern:

Be it known that 1, LEONARDD. DAvIs, a

Y citizen of the United States, residing at Erie, in

the county of Erie and State of Pennsylvania,

have invented certain new and useful Improvements in Methods or Processes of Shaping Metallic Ingots by Transverse Rolling; 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.

This invention relates to the method or process ofshaping metallic ingots by transverse rolling; and it consists in certain improvements therein, as will be hereinafter fully described, and pointed out in the claim.

Transverse rolling has been heretofore at-.'

tempted; but great difficulty has been encountered 1n employing it successfully, because such rolling tends to rupture the center of the ingot, and the extent of the rupture is soirregular asto make the result unsatisfactory.

I have found that the disadvantages heretofore experienced in transverse rolling may be overcome by. first piercing the ingot and then subjecting it to the transverse rolling process. The wall of the opening when so operated upon remains intact, so that the nature of the finished product may be safely relied upon. the ingot be produced by pressure rotatively applied with a feeding action of the ingot upon a mandrel. This is the ordinary method of piercing ingots. Where the ingot is so pierced, the walls of the opening are forged, so that they better sustain the rolling strain than where the opening is cast in the ingot.

There is also a more preferable disposition of fiber in the metal.

This process is intended for transverse rolling in connection with ingots as distinguished fromf transverse rolling tubing, properly so called. I

I prefer that the opening through billet of a piercing-mill; Fig. 4, a side elevation of the same.

The transverse-rolling mill is provided with three rolls A A A and the ingot B in place therein. The ingot is provided with the opening 6. The rolls are provided with the grooves a a and shoulders a a to give to the Fig.

finished article the shape desired, the article shown being a car-axle. I

. Transverse rolllng 1s common; but I show the outlines of a mill in'order that'my process may be better understood.

By transverse rolling I wish to be un-' derstood as referring to rolling wherein there is no axial movement of the billet.

In the piercing-mill shown in Figs. 3 and 4 C 0 mark the, disks, which are common 1n piercing-mills, D the mandrel, and E the b11- let. The billet is fed through by the actlon of the rolls and is pierced, the mandrel smoothing and compacting the walls of theopening formed. 5

What I claim as new is The method or process of shaping metallic ingots, which consists in first piercing the ingot, with a relatively small opening and smoothing and compacting the walls of the opening so made, and then transversely rolling the ingot without axial movement of the ingot so pierced for shaping its outer surface;

In testimony whereof I afiix my signature in presence of two witnesses.

LEONARD D. DAVIS. Witnesses:

H. C. LORD, GRACE E. YARD.

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