US159978A

US159978A - Improvement in rolls for rolling angle-iron

Info

Publication number: US159978A
Authority: US
Publication date: 1875-02-16
Anticipated expiration: 1892-02-16

Description

A. SWIFT &1. E. YURK.

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ALEXANDER SWIFT, OF CINCINNATI, OHIO, AND JAMES E. YORK, OF NEWPORT, KENTUCKY.

IMPROVEMENT IN ROLLS FOR ROLLING ANGLE-IRON.

Specification forming part of Letters Patent No. l 59,978, dated February 16,1875; application led January 13, 1875.

To all whom lit may concern Beit known that we, ALEXANDER SWIFT, of Cincinnati, Hamilton county, Ohio, and JAMES E.YORK, of Newport, Campbell county, Kentucky, have invented a new and useful Improvement in Rolls for the Manufacture of Angle-Iron, of which the following' is a specication:

Our invention has especial reference to the rolls employed for making that kind of angleiron whose transverse section is characterized by the symbols L., V, and U, respectively, according to whether its apex be a right or some other angle, or simply rounded; and our invention is designed to enable the workmen to produce angle-iron of uniform consistence, strength, and iinish throughout, and free from cracks and fissures.

The accompanying drawing is a partiallysectioned elevation of a pair of rolls which embody our invention, portions of the necks being broken away and the housings being omitted.

A is the lower, and B the upper, member of a pair of rolls on our plan, adapted to produce what is known as L angle-iron, or, in other words, angle-iron whose two blades or webs meet each other ata right angle. The passes or forming-intervals between the rolls are all, except the final one, of the kind known as closed, or, in other words, are separated from one another by collars a, preferably on the lower roll. They are designated in the order of their use, from left to right, by the numerals 1,2, 3, 4, 5, 6, and 7, respectively. The pass l, which receives the rough pile, fagot, or billet, is relatively the most open, and bears the semblance of an inverted V, of rounded and very obtuse apex, preferably about one fourth, fifth, and sixth passes are thickened, as at X, at or about the centers of their curved portions. The object of this thickening is to aiiord a preponderance of metal at those parts, in order to counteract the tendency to crack or separate along the web in the iinal pass. Each pass is ot' greater horizontal, and less vertical, dimensions than its predecessor, and each, except the last, presents the angle in the inverted position from that which precedes it.

In turning off the rolls the passes are formed at such relative radial distances as tovgive the preponderating draft to the portions Z, which forni the inner angles of the iron.

The pile is, of course, presented in the first pass with its laminations horizontal, and so continued throughout the course, in the manner long customary in the manufacture of U- rails and other kindred forms.

Ve are aware that it has been proposed to roll angle-iron in passes, one-half of both sides of whose wings were to project, by anabrupt angle, in a horizontal direction from the apex; but such form would be manifestly impractt cable, the re-entrant angle or crease formed thereby in that part of the web, otherwise most liable Vto separate in the act of rolling, tending to produce iiaws and rifts, which destroy or impair the inerchantable quality of the iron.

We claim as new and of our invention- A pair ot' rolls for making angle-iron, whose several grooves are so formed as to successively impart to the pile or bar the forms, iirst, of an obtuse or iiattened V, having rounded apex; second7 the same, with outcurved edges; and, third, provision for excess of metal at the centers of the curves, as shown in fourth, iifth, and sixth passes, the passes being alternately inverted and successively less obtuse, terminating with the nishingpass 7, substantially as and for the purpose set forth.

In testimony of which invention we hereunto set our hands. Y

ALEXANDER SWIFT. JAMES EDWIN YORK.

Attest:

FLAMEN BALL, J r., GEO. H. KNIGHT.

Erre.