US401693A - Rolls for rolling z-shaped slot-rails - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

F. GOLLEY. ROLLS FOR ROLLING Z SHAPED SLO T RAILS. No. 401,693. Patented Apr. 16, 1889.

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.(No Model.) 2 Sheets-Sheet 2.

F. OOLLEY. ROLLS FOR ROLLING Z-SHAPED SLOT RAILS.

No. 401,693. Patented Apr 16, 1889.

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FREDERICK COLLEY, OF JOHNSTOVVN, PENNSYLVANIA, ASSIGNOR TO THE JOHNSON STEEL STREET RAIL COMPANY, OF KENTUCKY.

ROLLS FOR ROLLING Z-SHAPED SLOT-RAILS.

SPECIFICATION forming part of Letters Patent No. 401,693, dated April 16, 1889. Application filed November 16, 1888- Serial No. 290,988. (No model.)

To all whom it may concern:

Be it known that I, FREDERICK CoLLEY, of Johnstown, in the county of Cambria and State of Pennsylvania, have invented a new and useful Improvement in Rolls for Rolling Z-Shaped Slot-Rails, which invention is fully set forth and illustrated in the following specification and accompanying drawings.

The object of this invention is sufficiently expressed in its title.

The invention will firstbe described in detail in the specification, and then particularly set forth in the claim.

In the accompanying drawings, Figure 1 illustrates, in front elevation, a pair of forming or roughing rolls. Fig. 2 illustrates, also in front elevation, a pair of finishing-rolls. In Fig. 1 the top roll is indicated by the letter A, and the bottom roll by the letter a. In Fig. 2 the top roll is indicated by the letter B, and the bottom roll by the letter Z).

In said figures the several parts to be de scribed are indicated by letters and numbers of reference, as follows: The passes in said rolls are indicated, consecutively, by the numbers 1 to 8, inclusive, pass No. 8 giving the shape of rail of the finished section desired.

In operating these rolls a bloom of hot metal, of ordinary form, is entered diagonally into pass No. 1, the principal reduction of metal effected in said pass being effected at the points 0 c, which points are located opposite to each other on a line parallel to the plane of the sides 0 C. The bloom is then quarter-turned for entering into pass N o. 2, wherein the same reducing action is continued, excepting that the amount of work put upon the mass of metal by the tongue ("Z is greater than that put upon the same by the opposing tongue D, the tendency to twist of metal being kept within bounds by the large draft at the points 6 e. The rolled metal is again quarter-turned into pass No. 3, wherein the draft of the various portions of the pass is more uniformly distributed over the mass v of metal. 111 passes Nos. l, 5, and 6 the metal is also quarter-turned each time, after which it is rolled continuously without further turning through passes Nos. 6 and 7 and into the finishing-pass N o. 8. Throughout all the passes from Nos. 4 to 8, inclusive, the excessive work of the head portion of the metal F is counterbalanced and the proper flow of metal maintained by making the draft on the extreme portion of the lower flange (marked G) excessive in proportion to the section or mass of this lower flange as compared with the draft on the web portion f, this portion being treated as a neutral zone.

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 calling for more passes of lighter draft than a heavy roll-train. It is also evident that the rolls can, if desired, be made three high instead of two-high, as shown in the drawings.

Having thus fully described my said improvement, as of my invention I claim Rolls for rolling Z-shaped slot-rails provided' wit-h passes having conformations substantially of the forms described, for the pur- .75 poses set forth.

FRED. COLLEY.

Witnesses:

A. MONTGOMERY, XV. MCLAIN.

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