US220818A - Improvement in rolling iron - Google Patents

Description

W. D. BYNON & W. LLOYD. Rolling Iron.

No. 220,818. Patented 0ct.21,18 79.

UNITED STATES PATENT OEEIoE.

WILLIAM D. EYNON AND WILLIAM LLOYD, OF PHILADELPHIA, PA.

IMPROVEMENT IN ROLLING IRON.

Specification forming part of Letters Patent No. 220,818, dated October 21, 1879; application filed March 10, 1879.

To all whom it may concern:

Be it known that we, WILLIAM D. EYNoN aHd WILLIAM LLOYD, both of the city and county of Philadelphia, and State of Pennsylvania, have invented a new and useful Improvement in Rolling Iron, which improvement is fully set forth in the following specification and accompanying drawings, in which- Figures 1 and 2 are views of opposite sides of rolls embodying our invention. Fig. 3 is a vertical section in line w 00, Fig. 2.

Similar letters of reference indicate corresponding parts in the several figures.

Ourinvention relates to metal-working rolls, which are provided with guideways extending from the lower grooves to the upper grooves thereof.

The said invention consists of certain improvements in mechanism for transferring blanks or bars through said guidcways from groove to groove.

It also consists in constructing said grooves so that the bars may be passed from elliptical grooves to angular ones without turning them.

Our invention is hereinafter described and shown as applied to a set of three-high rolls arranged in the ordinary manner. To the bearings or attachments of the said rolls there is secured a frame, B, which extends upward, incline from the lower part of the set of rolls to the upper part thereof. Said frame supports at upper and lower ends tubular guides (3 O, the guide Oleading to the groove between the top and middle rolls, and the guide 0 leading from an adjacent groove between the middle and bottom rolls.

To the frame B there is secured a block, D, having a curved outer face, as at a, and occupyingaposition between the outer ends of the tubular guides O O. Adjacent to the block D is mounted a roller, E, and diagonal thereto a roller, E. At the outer end of the guide 0, diagonal to the block D, is mounted a roller, E, so that a passage is left between theblock D and roller E", and the roller E and roller E.

As the iron is passed between the grooves of the middle and bottom rolls .it enters the guide 0, and is directed by the'roller E upward around the face of the block D, and

reaching the roller E is guided by the roller- E into the guide 0, and thus to the groove of the middle and upper rolls, so that the pass from one groove to another is automatic.

Rollers E E also act ,as stops or guards to prevent the escape of metal bars from the guides. It will he noticed that the roller E is so disposed that it directs the iron around the roller E.

It is evident that this guiding, passing, or conveying mechanism may be applied to the rolls to operate with the several grooves throughout the extent of the rolls, andthe rolls may be arranged in pairs side by side, and a conveyer communicate from one pair'to the other. The shape of these rolls is such that the grooves formed by their contact are in some cases elliptical, in others quadrangular.

The quadrangular grooves preferably alternate with the elliptical grooves, but any convenient arrangement may be adopted. The former are designated 01 in the drawings, and the latter are designated b.

In operation, a bar of metal is first passed through a lower elliptical groove between the mid dle and bottom rolls then through an upperquadrangular groove between the middle and upper rolls, then to a lower elliptical groove again, and so on. Of course this succession may be reversed; but it is important that pressure in elliptical grooves should alternate with pressure in quadrangular grooves to secure a thorough kneading of the metal.

It is evident a bar pressed into elliptical shape in crosssection by an elliptical groove can enter one of the quadrangular grooves only when its longer diameter coincides with one of the diagonal lines of said quadrangular grooves. This line must be the line which terminates in the angles that extend into the bodies of the rolls, as otherwise the greatest pressure on the metal would be brought to hear at the joint-angles, whereby small quantities of metal would be forced out of the grooveslaterallyandthe workingofthe rollsimpedcd. If, however, the diagonal line referred to as necessarily receiving or coinciding with the longer diameter of the elliptical bar be not parallel to the longer diameter of the groove which that bar has just left, it becomes necessary to turn the bar in transz'tu. This involves considerable labor by hand or combination with block D and suitable stops for preventing the escape of metal.

3.2 In combination with suitable guides, the rolls producing jointly elliptical grooves b and angular grooves d, the longer diameter of each elliptical groove being parallel to the line of greatest pressure of the succeeding angular groove, so that the bar may be passed from one to the other without turning it.

W. D. EYNON. 7 WILLIAM LLOYD.

Witnesses:

JOHN A. Wrannasnnm, II. E. GARSED.

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