US341529A - Rolls for reworking old rails - Google Patents

Description

(No Model.)

J. D. WILLIAMS & G. P. RAIDABAUGH.

ROLLS FOR REWO'RKING OLD RAILS.

No. 341,529. Patented May 11, 1886.

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JOHN D. \VILLIAMS AND GEORGE P. RAIDABAUGH, OF DANVILLE, PENN- SYLVANIA, ASSIGNORS OF ONE-HALF T ITEIL) OF SAME PLACE.

GROVE, & C0,, (LIM- ROLLS FOR REWORKING OLD RAILS.

SPECIFICATION forming part of Letters Patent No. 341,529, dated May 11, 1886.

(No model.)

To (LZZ whom it may concern:

Be it known that we, JOHN D. WrLLrAMs and GEORGE P. RAIDABAUGH, of Danville, Montour county, Pennsylvania, have invented an Improved Set of Rolls for Transforming or Reworking Old Steel Rails and Stub-Ends into Flat Strips or Plates, of which the following is a specification.

Our improvement in rolls relates to a pe IO culiar set of grooves or passes which are especially adapted to the reduction of old Bessemer steel rails and stub-ends, the reduction of which to flat strips or plates by any of the forms of rolls heretofore made use of is very I 5 difficult.

There is nothing new in the construction of our rolls, except in the form of the grooves, which are so designed as to perform by successive steps the operations of gradually compressing and offsetting one side of the head and the. opposite side of the foot of the rail, so that the web,instead of being united to the center ofthe head and to the center of the foot, is transplaced into a position in which it is 2 united with one edge of the head and the opposite edge of the foot forming an irregular S-shaped or double channel-bar with flanges meeting the web at obtuse angles upon opposite sides. The forms of the grooves required 0 to produce this sect-ion will be best understood by referring to the accompanying drawings, in which A is the upper roll; 13, the lower roll; a and b, collars,respectively,of upper and lower 5 rolls; 1, 2, 3, 4, and 5 successive reducingpasses; 6, final or box pass for flattening and finishing the bar. The forms of the grooves are such that the rail being entered with its web horizontal the upper side of the head and the under side of the foot of the rail are reduced more than the under side of the head and the upper side of the foot, nntiL'a-t the second or third pass, the portions of the head and foot first mentioned have entirely disap- 5 peared, having been forced into the wings or flanges of the channel-bar, the rail at the same time having been but little extended inlength. The rail before entering pass 1 is of the common and well-known T shape. Pass 1 shows the form that it takes after going through this groove. The rail is next passed successively through the second, third, fourth, and fifth grooves, which gradually squeeze the, metal out laterally with but little linear extension. The rail,now in the form ofa double channelbar of an irregular-S shape, is run through a box-pass, which opens out the flanges into the same plane with the original web of the rail, which so far has been but little changed. In

this pass sufficient compression is given to reduce all parts to a uniform thickness. Further reduction, if required, can easily be effected, in the usual manner, by passing the strip through cylindrical rolls.

The forms of grooves herein shown and de scribed are designed to effect a flow of metal, under pressure, in the direction necessary to obtain a flat plate without any overlapping of different portions of the metal upon each other; consequently the plate produced. by the reworking of old steel rails by our rolls has none of the seams or fissures produced by the overlapping and failure of the material to weld.

Another very important advantage in the use of our rolls is that by their use wider plates can be made than it is possible to obtain by any of the usual modes of reworking old rails. v

Bessemer steel, when rolled in the ordinary 8o way,has a tendency to extend itself in the direction of the length of the bar with very little lateral spread. WVe obtain the required width because in our rolling operation we preserve, so far as is possible, the entire width of the foot and head, merely squeezing the metal of one side of the head into the other, and repeating the same operation with the foot, but upon the opposite side. This leaves the metal in a position to be opened out with very little pressare into a broad flat plate. The amount of reduction at each pass may vary somewhat,

and the passes may be increased in number. In witness whereof we have hereunto setour I The strip may of course be further reduced l hands. in the usual way. T I r 1 Having now fully described our invention, %Z%%? F' H i 5 what we c1ain1,and desire to secure by Letters J w Patent, is A pair of rolls for reworking old rails and lt'nesses' stub-ends into plates, the said rolls having ROBERT ADAMS, passes of the shapes designated 1 to 6, sub- L. K. RIsI-IEL.

IO stantially as shown.

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