US378209A - Rolls for rolling gjrder-rails - Google Patents

Description

(No Model!) 8 3 sheets -sheet 1. 8 A. J. MUXHAM,

ROLLS FOR ROLLING GIRDER RAILS. No. 878,209. Patented Feb. 21, 1888.

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(No Model.) 3 Sheets-Sheet '2. A. J. MOXHAM.

ROLLS POE ROLLING GIRDER RAILS.

No. 378,209. Patented Feb. 21, 1888.

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(No Model.) A Q 3 Sheets-Sheet 3.

A. J. MOXHAM.

ROLLS FOR ROLLING GIRDER'RAILS. No. 378,209. Patented Feb. 21, 1888.

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ARTHUR J. MOXHAM, OF JOHNSTOWVN, PENNSYLVANIA.

ROLLS FOR ROLLING GlRDER-RAILS.

SPECIFICATION forming part of Letters Patent No. 378,209, dated February 21, 1888.

Application filed December 19, 1887.

To all whom it may concern.-

Be it known that I, ARTHUR J. MQXHAM, of Johnstown, in the county of Oambria and State of Pennsylvania, have invented new and useful Rolls for Completing the Rolling of Partially-Finished Blank Forms for Girder-Rails, which invention is fully set forth and illustrated in the following specification and ac compan yin g drawings.

The object of this invention is to prepare a blank which can be rolled by special mechanism into two different forms of girder-rail.

The invention will first be described in detail, and then particularly set forth in the claims.

In the accompanying drawings, Figure 1 illustrates in front elevation 21. pair of roughing-rolls. Fig. Zillustrates in elevation apair of finishing-rolls. Fig. 3 illustrates one form of rail which the blank can be subsequently rolled into after it leaves the rolls shown in Fig. 2. Fig. 4. illustrates another form offinished rail which the blank can be subsequently rolled. into after it leaves the roll illustrated in Fig. 2. Fig. 5 illustrates the blank as it leaves the last roll-pass, numbered 5 ofFig. 1.

The several figures above mentioned and the several operations pertaining to the invention will now be described as follows:

Fig. 1 shows five passes, No. 1 being an ordinary forming-pass, No. 2 an edging-pass,

No. 3 a dummy pass, No. 4 an edging-pass, and No. 5 a dummy pass.

Fig. 2 shows passes numbered 6, 7, 8, and 9, all being edging-passes. In all said edgingpasses heavy draft is maintained on the web portion of the metal forming the rail being rolled, ample room being provided for the spread of metal in order to permit of such draft. In the earlier passes compensation for the wire-drawing therein put upon the extreme edges of the lower flanges-which are very widc-and which wire-drawing is excessive, owing to the heavy draft on the center or web portion of the metal being rolled, is effected by the use of the two dummy passes Nos. 3 and 5 above named, more of such passes being preferable, rather than less. It will be observed that the action of these dummy passes is to pinch and spread on the Serial No. 258,285. (No model.)

extreme end of the lower flange of the rails only, as will be seen by comparing the dummy pass No. 5 with the shape of its prccedingedgepass, No. 4, from which rolled metal comes ready for said pass No. 5. The effect of this combination of dummy and edging passes is to produceathickened center portion of the lower flange of the blank rail, and after the dummy action a thinner edge portion, as illustrated at the points at x of Fig. 5; but the inner thickened portions of said flange are at such points that the tongue of the pass can shape said points with the minimum reduction oft-he outer points, x m, by wire-drawing. By thus reducing the outer edges the action of the tongue of the rolls and these thickened portions is practically to localize or concentrate the work at this point, wire-drawing being thereby re duced. By this means a more rapid reduction of metal is effected. From the last pass, No. 9, the blank can be transferred to any desirable grooving-rolls, such as have been lately invented and brought into use; or else grooves can be rolled in the same to complete a section of rail, such as illustrated in Fig. 3; or other rolling in one or two passes can be effected to complete a finished section, such as is shown in Fig. 4:.

I do not limit myself to the exact number or distribution of passes shown, as the number of passes and their distribution into roughing and finishing passes is to a certain extent arbitrary, being influenced by the length and diameter of the rolls, a light train of rolls call ing for more passes with lighter draft than a heavy roll train. It is also evident that the rolls can, if desired, be made threehigh instead of twohigh, as shown.

Having thus fully described my said improvement, as of my invention I claim- 1. Rolls for rolling wide-fiangedgirdeurails, provided with one or more dummy passes, whose action in said passes is concentrated on the outer or extreme edges of the lower flanges of the rails, substantially as and for the purposes set forth.

2. Rolls for rolling wide-flanged girder-rails, provided with one or more dummy passes, whose action in said passes is concentrated on the outer or extreme edges of the lower flanges of the rails, and with edgingpasses, wherein or form shown in the accompanying drawings, the maximum draft of the rolls is eoneenand numbered from 1 to 9, inclusive, as and trated on the inner and thicker points of said for the purposes set forth.

flanges, substantially as and for the purposes ARTHUR J. MOXHAM. 5 set forth. Vitnesses: I

C. R. PowEL L, CLAUDE M. JOHNSON.

3. Rolls forrolling wide-flanged girder-rails, provided with passes substantially of the shape

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