US151449A - Improvemessst in roiling-iviiils - Google Patents

Description

2 Sheets--Sheet 1. S W A N.

Rolling-Mills.

Patented May 26,1874.

L I I u l 75 uff @gmf 2 Sheets--Sheet 2. l. SWAN.

l Rolling-Mills, m N0,]5Vl,449, Patented May 26,1874.

JAMES SVAN, OF SEYMOUR, CONNECTICUT.

IMPROVEMENT IN ROLLING-MILLS.

Specification forming part of Letters Patent No. LliP, dated May 26, 1874; application filed May 11, 1874. l

To all whom it may concern:

Be it known that I, J AMES SWAN, of Scymour, in the county of New Haven and State of Connect-icut, have invented a new Improvement in Rolling-Mills; and I do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this spccication, and represent, in-

I `igure l, a front view 5 Fig. 2, an end view, (left hand5) Fig. 8, an end view, (right hand5) and in Fig. 4, a detached view. Y

This invention relates to an improvement in mills for rolling metals, the object being to make the roll self-adjusting, so as to roll tapers or irregular thicknesses, and it consists in the arrangement of a cam beneath each of the bearings of the lower roll, the axis of the cams vertical and supporting the roll, the cams prevented from other than axial vertical movement, and beneath each of these cams a revolving wheel, the axis of which is inline with the axis of the said cams, the working-face of the said cams bearing upon a point or points on said wheels, so that, the wheels revolving, the said bearing-points will travel upon the face of the cams and force them (the cams) to rise or allow them to fall, according to the configuration of the face of the cam, and impart a corresponding rise and fall to the lower roll, as more fully hereinafter specied.

A A are the uprights, which support the rolls and operative mechanism. B, the upper roll, is hung in guided bea-rings C, and these bearings suspended by the adjusting-screws D, in the usual manner. E, the lower roll, rests in guided bearings F. The bearings F rest upon a vertical shaft, a, firmly supported in a vertical position in the uprights, so as to be moved freely up and down, but positively prevented from rotation. On the lower end of the shaft a is a cam, H, the face of which is around the luider surface, and is irregular in accordance with the required rising and falling of the roll supported thereon. Beneath each of these cams is a wheel, I, the axis of which is in line with the axis of the cam H above. These wheels I are driven or caused to revolve by worin-gear (7,011 a shaft, L, which receives its motion from the gearN on the upper roll. The wheels I are provided with corresponding bearing-points to travel upon the face of the cam. These bearing-points are, preferably, made by the arrangement of a roll, I, set in the wheel, its axis radial from the axis of the wheel. The wheels I, caused to simultaneously revolve, cause the rolls b to run around under the face of the respective cam above; hence the rise or depression on the face of the cam will cause the cam to be forced up or down accordingly, and impart a corresponding rise and fall to the lower roll, and the metal passing between the rolls will be varied in thickness, according to the rise and fall of the roll. By this arrangement tapers or irregular thicknesses may be rolled, it only being essential to make the face of the cams a 'pattern for such variation. A succession of articles, as f iile-blanks,77 cutlery-blanks, &c.,may be formed by simply introducing the piece at the proper time, which may be done by any of the known feeding devices. To cut oif the power and prevent the wheels I from turning, aclutch, P, is arranged in the usual manner for connecting and disconnecting power, but it is desirable that this disconnection should occur always at the same point, or some predetermined point. To do this I attach to the shipper shaft R an arm, S, carrying a dog or pawl, t, which rides upon a iiange, a, on one of the wheels I. In this ange is one or more notches, m, into which the dog t may fall. Then the clutch is in gear the dog rides upon the face of the flange a until it arrives at the notch m, when it will be thrown into the said notch by a spring, T, this movement turning the shipper-shaft R and throwing out the clutch and stopping the revolution of the wheels I. In this position the rolls may be used as an ordinary rolling-mill.

The clutch may be held in gear by a latch, f, to allow a continued revolution of the wheels I, and continued working of the mill, and when released from the clutch the working of the wheels I will be arrested when the notch is reached, as before described.

It will be readily seen that the cams H may be made to revolve, and the bearing-points stationary; or that the relative position ofthe cams H and wheels I may be changed (it bcing essential that the axis be vertical) without departing from this invention. I, therefore, wish to be understood as embracing such colorable variation in the following claims.

I do not wish to be understood to claim as my invention giving to one of a pair of rolls a combined rotary and reciprocating movement, as such I am aware is not new; but

I do claiml. In combination with a pair of revolving` rolls, a cam, H, beneath and axially support- Ving each bearing of one roll, the revolving Wheels I in axial line with each of said cams, a point or points on said Wh eels traveling the face of said cams, so as to impart a recipro= eating movement to said supported roll corresponding to the face of said cam, substantially as described.

2. In combination with a pair of revolving rolls, the cams II and Wheels I, operating together as described, the dog t, the notched ange or Wheel n, and the clutch l?, all substantially as and for the purpose specified.

JAMES SWAN.

Vitn esscs:

F. A. RUGG,

G. WV. DIVINE.

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