US606474A - De witt c - Google Patents

Description

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No. 606,474. Patented June 28, 1898.

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DE WITT C. PRESCOTT.

ROLLING APPARATU$. I

No. 606,474. Patented'June 28, 1898.

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ANITED TATES ATENT FICE.

DE IVIIT CLINTON PRESCOTT, OF DULUTH, MINNESOTA, ASSIGNOR TO THE YORK STRUCTURAL STEEL COMPANY, OF NEW YORK, N. Y.

ROLLING APPARATUS.

SPECIFICATION forming part of Letters Patent NO. 606,474, dated June 28, 1898.

Application filed March 22, 1895- Serial No. 542,757. (No model.)

To all whom it may concern.-

Be it known that I, DE WVITT CLINTON PRES- COTT, of Duluth, in the countyof St. Louis and State of Minnesota, have invented certain new and useful Improvements in Roll- .ing Apparatus, of which the following is a specification.

The present invention relates to rolling mills which embody in their construction a plurality of sets of opposed rolls which act upon and reduce a slab of iron or steel to a finished product-as, for instance, that form known as an I-beam.

The object of the invention is to provide for and in a mill of this class a construction which will permit each set of rolls to be adj usted independently of the other set, as well as permitting the several sets to be adjusted collectively.

I will describe a rolling apparatus or mill embodying my invention and then point out the novel features in the claims.

In the accompanying drawings, Figure 1 is a side elevation of a rolling apparatus embodying my improvement. Fig. 2 is a plan View thereof. Fig 3 is a transverse section on line 00 00, Fig. 1.

Similar letters of reference designate corresponding parts in the figures.

I have shown my invention as being em:

bodied, for the sake of illustration in a roll ing apparatus of the form and construction pointed out in Patent No. 410,724, granted September 10, 1889, to L. D. York, and to which I refer for a more detailed description of the parts common to the two inventions. I do not, however, in'so illustrating and describing it limit myself to the particular apparatus disclosed in that patent, but wish to cover the improvement as applied to any apparatus, of which the one shown in the patent is a type as regards the presence of a plurality of sets of forming-rolls.

Referring'to the drawings, A A are the upper and lower rolls, and B B are the side rolls, deriving motion from any. suitable source. The rolls A A are, as usual, supported in housings O O to have an adjustment toward and away from each other, while the rolls B B maybe carried in side blocks D D, the latter being movable in side frames E E.

In the process of rolling structural shapes-- 6. g., the so-called 'I-beam -it is necessary to adjust the upper and lower rolls A A toward and away from each other, as well as to impart to the side rolls B B a corresponding movement, in order that the slab may be formed upon all sides and reduced to the desired dimensions of the structural shape; Occasion may also arise during the rolling of structural shapes when it is desirable that, instead of adjusting the rolls A A B B all. together, the rolls A, A should be adjusted while the rolls B B remain stationary, or, conversely, the rolls B B should be adjusted while the rolls A A remain stationary. describe the means whereby these several adjustments maybe effectednamely, a col- I willnow lective adjustment of all the rolls or anin.de-

dependent adjustment of the rolls A A or an independent adjustment of the. rolls B, B.

F F are screws entering nuts secured to the upper portion of the housings O O and by meansof which the upper roll A may be moved toward or away from the lower roll A, as pointed out in the before-mentioned patent.

To each screw F F, secured to its upper extremity and projecting vertically upward therefrom, is a short shaft G, having a bearing in a bushing g, which is carried by a standard g, surmounting the housing 0. The shaft G is provided with a spline g engaging in a longitudinal recess in the bearing-surface of the bushing g. Consequently as the screw F is rotated the shaft G will be carried lengthwise of the bushing g, rotating with the latter, while to prevent a lengthwise movement of the bushing itself I may form the bushing with a circumferential groove 9 in which projects a circular tonguegr from each mem- A worm' IOO These engines would be provided with reversing mechanism.

A horizontal shaft I is arranged at the side of the vertical shafts G G. This shaft is driven from the engines H through gears h and carries worms I I meshin res ectivel r with the worm-wheels G G. The worms I I are mounted loosely upon the shaft I, but may be each rigidly secured thereto by a sliding clutch K, here shown to be of an ordinary type, or, in other words, a jaw-clutch comprising a clutch member 70, attached to each worm I, and a clutch member is, movable lengthwise of the shaft I, but compelled to rotate therewith by an engaging feather and groove, the opposed faces of the clutch members being provided with engaging teeth or jaws. For operating these adjustable members 7c and 7c I provide thesame'with circumferential grooves into which a yoke 70 extends. It is of coursev necessary that the members 70 k be moved toward and away from each other simultaneously if the clutches are located between the shafts G,

since the worms'I I and the shaft I should be in operative connection or disengagement both at the same time. -To this end I provide separate bars 70 k movable lengthwise in convenient bearings and to which the yokes k are secured, the bars being themselves moved to and fro by a hand-lever 7c, fulcrumed to a suitable stationary part. Connecting-rods k 70 connect the bars 76* k to the hand-lever 70 on opposite sides of its fulcrum-point.

Extending laterally from each housing C is a short rotary shaft L, supported in suitable bearings and carrying a spur-wheel L, which is rigidly secured to the shaft and engages with a pinion Z, carried by the shaft I. Each pinion Z is in operative connection with the f shaft I, through the medium of a clutch L Whose construction may be similar to that already described.

From the shafts L power is derived for effecting the adjustment of the side rolls B B. To secure this result, I'provide each shaft L with a bevel-pinion L coacting with a bevel spur-wheel L securcd to the upper end of an inclined shaft L These inclined shafts may actuatescrews M, by which the blocks D D, and consequently the side rolls 13B, are

carried toward and away from each other, as pointed out in the patent already referred to.

able blocks D D they may be rigidly secured to a stationary support, a construction which is illustrated. In this case the shanks of the screws M will engage with the hubs of the driving bevel-gears by a spline-and-keyway connection to permit of the lengthwise move- ,ment of the screw-shank through the gear. As it may be desirable to throw both clutches L into and out of engagement independently, I may provide a system of operati-ng-levers and sliding bars similar to that already described in reference to clutches K K, comprising sliding bars m m, hand-levers ,m", and connecting-rods m and m.

As it may be necessary to shift the housings C O laterally to widen or lessen the distance between the same, the shafts I, L, and L will be provided with keyways of sufficient length ito permit of this movement. It will be seen iby this construction that I provide means whereby either set of sideand top and bottom trolls may be adjusted independently of the other and also bya manipulation of the proper iclutches connections may be made sothat ,both sets of rolls may be operated together.

Having described my invention, what I iiconsider as new, and desire to secure by Letters Patent, is-

1. In a rolling apparatus, the combination ;with top and bottom rolls and side rolls, of a ;single power-shaft, worms and worm-wheels gwith which said worms engage to secure the Eadjustment of the top and bottom rolls, j clutches for operatively connecting with and gdisoonnecting said worms from said shaft, pinions driven by said power-shaft, and driviing mechanism for securing the adjustment of the side rolls,.clutches for operatively con- Inecting said pinions with said shaft and dis- ;connecting them therefrom, and means for Q operating theclutches, substantially as speci- Zfie'd.

2. In a rolling apparatus the combination 1 of the power-shaft I, the shafts G, G, driving the screws F, F, the worm-wheels G G splined to the shafts G, G, the worms I, I driven from the shaft I and engaging'with {the worm-wheels G, G, the clutches K, K the pinions Z Z driving the shafts L, L, and the clutches L L for operatively connecting the pinions Z, Z, with the shaft I and disconnecting them therefrom, substantially as specified.

In testimony whereof I have signed my :name to this specification in the presence of two subscribing witnesses.

DE WITT CLINTON PRESCOTT. Witnesses:

M. O. KINGSBURY,

WM. ANDREW.

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