US281595A - Self and willis f - Google Patents

Description

(No Model.) I 2 sheetssheet 1.

' s. R. WILMOT. Y

ROLLING MILL.

Patented July 17, 18483;.

` w j )Sn l' N STL y A L 5 i r" s s Y EN HMI- HHIIIHI IIIHHIIHIIIIIIHIIHI] MHIHHIHIIHUII I s HIIIHHIH I'HIHIIIHHH UNITED STATES PATENT OFFICE.

-sAMuEL E. wILMor, E BEIDeEroE'r, coNNEcrIcUTfAssIeNoE To HIM- sELE AND WILLIS E. HoBBs, oE sAME PLACE.

ROLLING-MILL.

SPECIFICATION forming` part of Letters-Patent No. 281,595, dated'J'uly 17, 1883.

Application filed October 27, 1882. i (No model.) V

To all whom t may concern,

Be it known that I, SAMUEL R. WILMor, of Bridgeport, in the countyof Fairfield and State of Connecticut, .have invented a new and useful Improvement in Rolling-Mills, of which the following is a 'specicatiom v Although certain features of my'invention are applicable Lto rolling-mills generally, the invention is more particularly intended to be employed in rolling-mills of the kind shown and described in Letters Patent of the United States No. 222, 97 3, granted to me December 23, 187 9. Such 4mills are particularly intended for reducing cold iron and steel rapidly into pieces of great length andvery thin with few annealings, whereby is secured the greatest perfection of metal with the least waste by trimming, scaling, and -pickling. In mills of the kind above described the lower working- 2o bearings, but is supported on and between two rolls.

The objects of my invention are to provide bearings of the upper working-roll in a rolling-mill correspondingly upward and downward together, and for rocking the said roll, or simultaneously increasing the'pressure on one bearing and easing or relieving, the other bearing of pressure, when the metal is slightly thicker on one edge than the other, or has a tendency to run crooked; also, to prevent the metal, which is often thinner than paper, from rumpling as it is. fed between the rolls, and to take out any wrinkles or rumples, and smooth the metal, and to guide and confine it as close as possible to the point of contact between the working-rolls; also, to provide a stripper for preventing the metal as it leaves the line of pressure of the working-rolls from clinging to the lower roll, or dropping down and passing between the same and its rear supporting-roll and stripper, having bearings or pivotsmade of soft metal, so that in case themetal becomes caught under the stripper (forming a jam) the strain or push on the stripper will cut off the `pivots and throw'thestripper out, thus preventing the 5o spoiling of any considerable amount of the roll is very much smaller in size than the up- I per Working-roll, and has no necks fitted inr a very convenient means for adjusting the metal and the straining or breaking of any of the parts. v

To these ends the, invention consists in the combination, with the upper working-roll, of devices hereinafter described, and set forth in the claims, for adjusting and rocking the bearings of' said roll.

It also consists in a' feeder comprising a throat tapering toward the working-rolls on its upper and lower surfaces, and a wedge tting loosely in the throat and adapted to be Adrawn in by the moving metal to flatten and smooth it, but which is provided with a stop which prevents it from being drawn into the throat sufficiently to clamp and hold the metal.

It also consists in the combination, with the .working-rolls, of a stripper having a knifeedge which bears on the lower working-roll,

.and devices for supporting it in position and for adjusting it, all of which features are hereinafter fully described.

In the accompanying drawings, Figure 1 rep sents a longitudinal vertical section of a rollingmill embodying my invention. Fig. 2 represents a transverse vertical section thereof. 7 5 Fig. 3 represents a plan thereof. Fig. 4 represents a plan of the stripper and its supporting arms or levers detached from other parts. Fig. 5 represents a transverse section, upon a much larger scale, ofthe working-rolls, the sup- 8o porting-rolls, the feeder, and the stripper; and Fig. 6 represents a detail sectional view, showing the manner of connecting the stripper with its supporting arms or levers.

Similar letters of reference designate corresponding parts in all the figures.

A designates the upper working-roll, and B the lower working-roll, which is of small diameter, and which rests upon and is supported without ordinary bearings wholly upon and between two supportingrolls, C. IIhe rolls A G C are provided with gears c, which all engage with and are operated by an internal gear, D, upon a shaft, D, which is also provided with a large drivinggear, D2. The necks of the upper working-rolls, A, are fitted in bearings b, which are vertically adjustable in housings E, and the supporting-rolls O' are supported in the usual fixed bearings. The

housings E are supported by a bed, E. The Ioo e A f 281.595

arrangement ofthe werkingrolls, the supporting-rolls C, and their operating mechanism is like that shown and described in my Letters Patent above mentioned.

I will rst describe the devices for adjusting the bearings b of the upper working-rolls, A.

Upon the top of the bearings b is a bar, F, which is adapted to be moved longitudinally by means of a screw, c, operated by a handcrank, c', and which has upon its upper surface wedges d, upon which rest shoes or blocks c, having their lower surfaces inclined l correspondingly to the wedges d. The bar F is channeled on its upper surface or has upwardly-projecting flanges on opposite sides, as shown in Fig. 2, between which the shoes or blocks e fit, and by which they are retained in place laterally.

G designates the usual adjustingscrews, which fit in nuts inthe housings E, and which are here shown as having corresponding threads, both being right-hand threads. The lower ends of the screws G fit on or in the shoes or blocks c, and at the upper ends they are provided with worm-wheels G.

II designates a screw-shaft engaging with and arranged between the wheels G', and supported in fixed bearings ff7 as shown in Figs. 2 and 3. This screw-shaft may be turned by a handle, II, and upon the shaft is a fixed co1- lar, g.

Between the bearing f and the fixed collar g is a slotted block or abutment, h, which prevents longitudinal movement of the shaft when in place; but when the block or abutment is lifted off the shaft the latter can be moved longitudinally sufficiently to disengage its worm or screw from the wheels G.

In setting the upper roll, A, the screw-shaft II is disengaged from the wheels G, as above described, and the screws G are turned down by hand until the shoes e have both a solid bearing on the wedges d. The screwH is then turned into engagement with the wheels G, and the block or abutment 7L inserted between the bearing f and fixed collar g. rlhc hand-crank e is then turned to move the bar F, and so place the desired pressure on the bearings b. By employing an index in connection with the screw c the bearings may be adjusted definite distances. For example, one half-turn of the screw c might effect a difference of one-thousandth of an inch in the thickness of the metal. If it is found that the metal is thicker on one side than the other, or runs crooked, the wormshaft H may be turned during the rolling 0peration to pinch tighter on one bearing I) and ease up on the other; and by this means I am enabled to roll metal of exactly uniform thickness, and straight. j

I will now describe the feeder, which is best shown in Fig. 5.

I designates the tapering throat, which is composed of a top, 17, a bottom, j, and sides k, all here shown as made integral. rIhe topi and bottom j converge toward the rolls, and

the feeder may be supported by fitting in grooves Z in the housings E.

In the throat I is a wedge, I', which fits snugly between the sides thereof, and is provided with a shoulder, m, which forms a stop for limiting the inward movement ofthcwedge. As shown in Fig. 5, the stop m is against the end of the top t', and the wedge cannot enter farther into the throat. The strip of metal n is fed in below the wedge I, and the wedge is drawn in by the moving metal and smooths the latter, and prevents it from passing between the working-rollsAB in a rumpled condition. Before the wedge can clamp the metal a so as to hold it, the stop m strikes the top i, and the wedge can enter ne farther into the throat. This feeder prevents lateral movement of the metal a, and supports the metal close to the line of contact with the rolls, so that it must pass between the rolls in a smooth condition.

I will now describe the stripper, which is best shown in Figs. 4, 5, and 6. f

The stripper J consists of a piece or bar of steel of the transverse section shown in Fig. 5, having a sharp or knife edge which rests on the lower working-roll, B, as near as possible to its center, and which also rests on the supporting-roll C. The stripper is supported at both ends by bent levers or arms J ,which are separately fulcrumed at 0 to the housings E, and are connected at their lower ends by a rod or bar, J 2.

To the rod or bar J 2 is attached a hook-bolt, p, which passes through a slotted bar, p', and is secured thereto by nuts 9. By adjusting these nuts the stripper J maybe made to bear with greater or less force on the rollsB C, and by adjusting the bolt p horizontally nearer to one end than the other of the bar or rod J 2 the stripper may be made to press down with equal force along its entire length in case there should be any inaccuracies in construction. As here represented, the rolls A and C are rabbeted or turned down at the ends to accommodate the levers J The manner of connecting the stripper .I with the levers J is best shown in Fig. 6.

In the ends of the levers J are inserted steel bushings r, and in the bushings are fitted pins s, of soft metal--such as ironwhich enter the stripper. Incase ofthe metal strikingthe ends of the edge of the stripper, instead of passing over it and rumpling up,the strain on the stripper will cut off the pins or pivots s of the stripper, and the latter will be thrown out. I thus prevent the waste and the clogging and straining of the parts which would result from the metal passing under the stripper or between the rolls.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The combination, with the upper working-roll of a rolling-mill and its bearings, of adjusting-screws for the bearings, shoes or blocks upon which the screws act, and which have inclined lower faces, a wedge-bar fitting and adapted to be moved longitudinally be- IOO IIO

tween said bearings and shoes or blocks, and

mechanism, independent of said wedge-bar,

for simultaneously increasing the pressure on one bearing and relieving or diminishing the 5 pressure on the other bearing, substantially as herein described.V

2. The combination of the roll A, its bearings b, the wedge-bar F, channeled on its up- 'per side, and its adjusting-screw c, the inclined shoes e, which fit in the channeled wedge-bar F, and are retained in place laterally thereby, and adjustingscrew G, all substantially as described.

3. The combination, with the upper working-roll of the rolling-mill and its bearings, of screws for exerting a pressure on the bearings, a shaft mounted in iixed bearings, and mechanism for imparting motion from said shaftv equally and simultaneously to both said screws, to increase the pressure on one bearing and relieve or lessen the pressure on the other bearing, substantially as and for the purpose described.

4. The combination, with the upper working-roll of a rolling-mill and its bearings, of screws for exerting a pressure onthe bearings, and having corresponding threads, either right or left hand, a worm-wheel, secured directly upon the upper end of each screw, and a worm or screw mounted in iixed bearings, and ar-l ranged between and engaging with both said wheels to turn them, and the screws to which they are attached, in opposite directions, substantially as and for the purpose described.

5. The combination of the upper workingroll A, its bearings b, thewedge-bar-F, and inclined shoes e, the screws G, the wormwheels G', and the worm or screw H, substantially as herein described.

6. The combination of the worm-wheels G, 4c the screw or worm shaft H, provided with a fixed collar, g, the bearings ff', and the re'- movable piece h, tted between said collar and one of said bearings, substantially as herein described.

7. The combination, with the working-rolls of a rolling-mill, of a feeder composed of a tapering throat, and a wedge tting therein and provided with a stop to limit its movement into said thread, substantially as and for the 5o purpose herein described.

8. The combination, with the lower working-roll of a rolling-mill, of a stripper having a knife-edge adapted to rest thereon, supports for the stripper at each end thereof, and softmetal pins connecting the stripper with said supports, and adapted to be cut ofi` by the rolled metal striking the edge of the stripper,instead of passing over it, substantially as herein described.

9. The combination of the working-roll B, the stripper J, the levers J', provided with bushings r, and the pins connecting the stripper with said levers, substantially as herein described.

S. R. WILMOT.

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