US289605A - Rolling-mill - Google Patents

Description

(No Model.)

' J. H. BIGKLEY.

ROLLING MILL.

No. 289,605. Patnted De ob l, 1883.

Phnlo-Lilhognphor, Washington. B4 c UN TED STATES PATENT OFFI E.

JOHN H. BIOKLEY,-OF DOVER, NEW JERSEY.

ROLLING-MILL.

SPECIFICATION forming part of Letters Patent No. 289,605, dated-December 4, 1883, Application filed January 23, 1883. (No model.)

To all whom it may concern.-

Be it known that I, JOHN H. BIOKLEY, a citizen of the United States, residing in Dover, Morris county, New Jersey, have invented certain new and useful Improvements in Rolling-Mills, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to an improved construction for a three-roll mill adapted to shape the bar in a cavity between all the rolls; and the nature of my improvements will be understood by reference to the following description and to the annexed drawings. 7

Figure 1 is an end elevation of a mill provided with my improvements. Fig. 2 is aside elevation of the same. Fig. 3 is a plan of the steam cylinders and their connections and valve-gearing. Fig. 4 is a horizontal central section of one of the valves. Fig. 5 is a vertical central section of the same. Fig. 6 is a detached view of the gears for driving the rolls, and Fig. 7 is an axle of profile or outline corresponding with the rolls shown in the mill.

A A are the housings of the mill; B B, the bottom rolls, and B the top roll, mounted in a vertical slot, d, in the housings, above the space between the lower-roll bearings b b. The housings are shown fitted to railsRupon a bed-plate beneath the mill, and clamped thereto by bolts S. The caps O at the tops of the housings are shown provided with vertical steam-cylinders D, the pistons of which are formed with rods E, projected through stuffing-boxes b downward into the slots (1, and secured to the boxes 0, which support and move the upper roll, B These boxes 0 are shown made in halves, with bolts to take up the wear; but the lower rolls, B B, are set in open boxes or bearings b b, the latter of which is movable and arranged to slide outward for discharging the finished work. The lower rolls are mounted at the same level in the housings A, and the upper roll being set centrally over them, the whole three surround a cavity in which a shaft can be laid parallel with the rolls, and in which it can be subjected to a rolling pressure upon its entire length at once.

The rolls are shown in the drawings adaptcylinder.

ed to shape a railway-car axle of the form shown in Fig. 7, and the shaft shown at s in Fig. 1 represents such axleduring the rolling operation; but by changing the profile of the rollsit is obvious that any other kind of shaft can be shaped in a similar manner. In practice such a mill would be operated in conjunction with the ordinary bar-rolls, which would roll the bar to a suitable size by rolling it lengthwise in the usual way. From such an ordinary mill the bars would be: passed in a line parallel with the rolls B B tothe mill shown in my drawings, where pieces of suitable length would be introduced between the" three rolls by raising the upper one a sufficient distance, the lower ones being set close enough together to retain the bar in the cavity between them, as in Fig. 1. The upper roll would then be lowered and pressed upon the bar while all the rolls revolved until the bar was fully shaped. By moving the roll B horizontally at the close of the rolling operation, the finished axle could be dropped upon a truck and carried away from the mill. The steam-cylinders shown at the tops of the housings afford the means of raising, lowering, and

pressing down the top roll, B with great fa= are connected by cranks f and a tie-bar, 9, so

as to be moved simultaneously by the handle it on the said bar. The portsin the valves are seen in the sections in Figs. 4 and 5, where'an arrow, i, shows the entrance of the steam through the valveinto one of the cylinderpassages m through a port, n, in thevalve, the exhaustffrom' the opposite end'of the cylinder passingout through the passage 111/,

through the port a in the valve to the discharge at T, as at arrow at 1". By turning the valve one-fourthof a revolution in its seat,

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5 -ure.

the action of the portswould be reversed and the steam and exhaust pass through the passages m m in opposite directions. With such a construction it will be seen that the upper roll may be moved in either direction or pressed upon the bar 8 with the full force of the steam above the pistons 19.

To draw back the roll B when the bar is fully shaped, I provide a cam, j, behind each of its boxes b, and connect the cam with the box by a strap, 0. The cams are sunk in slots 70 in the housings, and are connected to gether by a shaft, Z, having a hand-lever, Z, secured thereon, for turning the cams at pleas- When the boxes I) are pushed in, as shown in Fig. 1,- for rolling a bar, 8, the cams are in a neutral position, and no pressure is transmitted to the shaft Z to cause it to turn, thus locking the boxes securely in the required position. a

In Fig. 2 is shown the end of the drivingspindle E, which is mounted in any suitable manner opposite the center of the bar 8, and provided with a gear, F, to rotate all the three rolls at the same time.

In Fig. 6 is shown such arrangement, and the three gears G, secured upon the ends of the rolls B, B, and B to receive the motion of the gear F, set centrally between them.

The gears G are omitted from Figs. 1 and 2 to avoid obscuring the drawings; but in the latter view both ends of the rolls are shown 0 but, having set forth the nature of my improvements, it will be seen that the use of the steam-cylinders having their valves connected by the tie-bar g enables me to control the movement of the upper roll with great facility, so that the bar 8 may be introduced with the least possible trouble from the side of the rolls. The use of the cams to open the lower rolls also enables me to discharge the finished bar instantaneously and to restore the rolls to their working position without the delay occasioned by the use of screws, such as are commonly used to adjust the rolls sidewise. The arrangement of the driving-gear F in the center of the three rolls also avoids the transmission of the power through'one roll (or its gear) to another.

I therefore claim my improvements as follows:

1. The combination, with the rolls B, B, and B arranged and operated as described, of the steam-cylinders D, provided with rotary valves V, having a connection or tie bar, 9, for moving them simultaneously, and the piston-rods E, secured to the boxes of the upper-roll boxes 0, the whole operated substantially as shown and described.

2. In a three-roll mill having the rolls arranged and operated as described, the combination, with one of the lower rolls, of sliding boxes, as Z), cams to move them to and fro, as described, and a connecting shaft, Z, and hand-lever Z, for operating the cams simultaneously, as and for the purpose set forth.

. In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

JOHN II. BIOKLEY.

WVitnesses:

THOS. S. CRANE, IV. F. D. CRANE.

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