US285567A - Roll-mounting - Google Patents

Description

2 Sheets-Sheet 1.

(No Model.)

R. A. GARSLBR ROLL MOUNTING. No. 285,567.

Patented Sept. 25,1883'.

` UNITED 'STATES PATENT` OFFICE? ROBERT A. CARTER, OF PITTSBURG, PENNSYLVANIA.

ROLL-MOUNTING.

SPECIFICATION forming' part of Letters Patent No. 285,567, dated septembr 25, 188s. Application filed `April 19,1883. (No model.)

' cation, in whichlike letters indicating like l nal-boxes, so that the boxes have bearing both parts- Figure l, Sheet l, is a View in end elevation of my improved roll-mounting. Fig. 2 is a view of the same in side elevation, partly in section. Fig. 3, Sheet 2, is a vertical sec- I.tional View takenin the planeV of one of the housings; and Fig. 4c is a perspective view of a portion of a roll and its j ournal-bearing.

My invention relates to certain improve- `ments in mechanism for mounting and adjusting rolls; and in general terms it consists of certain combinations of housings having openings with rounded ends, forming seats for cylindrical journal-boxes, such boxes having journal-openings therein out of their centers, and gear mechanism for moving and holding the journal-boxes, whereby the rolls may be adjusted toward and from each other, and other advantages secured, as hereinafter more fully described and claimed.

In the drawings, A A represent a pair of roll-housings for mounting rolls BB. In the housings are made vertical slot-openings A A, having half-round ends a, (see Fig. 3,) uponwhich are seated cylindrical journalboxes C. The length of the slot-openings is equal to the sum of the diameters of the jourupon the slot endsand also upon each other, giving them rm support and providing for their rotation with 'uniformity and steadiness of movement.

Gpenings or bearings c for the roll-j ournals b are made inthe boxes C, out of or alittle to one side oftheir centers, with the usual or any suitable form of brasses, c', orequivalent bearing-strips secured by grooves c'l and screwbolts c. These boxes C are in effect eccentrics having fixed periphery-bearings, whereby notation of the boxes will give the eccentric'journal-bearings movement in the are of a circle. If these eccentric bearings or boxes are rotated in opposite directions, the rolls will be made to approach or separate from each other.

As illustrated in the drawings, the rolls are at their limit Aof separation, so that rotation in either direction will cause them to approach. In order to eiiect such rotation of the eccentrics and to provide for holding the rolls at any desired position of adjustment secured by such rotation, I make use of gears E E, cast on or secured to the ends of the boxes concentric therewith, which gears intermesh and are driven with slow but powerful movement by means of worm-wheel E', journaled in suitable bearings on the face ofthe housings, as at e. Rotation of the wornrgear by power or by hand will cause rotation of both eccentrics C. On the other hand, resistance to rotary force applied from the eccentrics or gears E will be so great that the worms will form, practically, a lock, holding the rolls in any desired position of adjustment. The principal disturbing force is a tendency to separate the rolls by pressure of the article being rolled. This tendency may be reduced materially by causing the rolls to rotate for work in the same direction as the eccentrics are turned for adjusting the rolls toward each other-say as indicated by the arrows r s, Fig. 3- thereby causing the rotary force due to journal-friction to be operative through the eccentrics in holding the rolls.

against separation by working-pressure. This action is more apparent and effective at intermediate positionsv of adjustment, in which the roll centers areont of thevertical plane through the centers of the journal-boxes. In these positions the weight ofthe rolls has also a tendency to move the eccentrics, carrying` both rolls downward by turning the eccentrics in the same direction. This tendency is counteracted, however, by the gearing, which will not permit the eccentrics to rotate in the same but, rather, in opposite directions. Consequently, the weight of one roll acting through its eccentrics will be counterbalanced bythe other roll acting through its eccentrics. This provision or feature of roll-balance-greatly facilitates movement for adjustment, affording substantially the same advantages in this respect as secured heretofore by lever-andweight balance for the upper movable roll. So far as I am aware it is new with me to accomplish this desirable feature by balancing the rolls one with the other, supporting them, as it were, upon the opposite ends of a leverbalance, which in the present instance is formed by the eccentrics and gearing.

I have illustrated my invention applied to two rolls; but it may be applied in substantially the same manner to more than two- `say to three rolls, constituting a three-high millby mounting the upper and lower roll in eccentric boxes, such as described, and connecting them by gearing, whereby rotary movement of the eccentrics will cause the upper and lower rolls to approach or recede both from each other and from the intermediate roll. The rolls are mounted in both housings in similar manner, and in order to move the eceentrics at both ends simultaneously the worms E (see Figs. l and 2) are connected by shaft H and bevel-gears h 71., so that power applied to one worm-shaft will be communicated to the other.

As rolls are ordinarily mounted, the lower roll isfixed and the upper movable for adjustment; also, in close adjustment, as in sheet or plate rolls, the upper roll rides upon the lower when not separated therefrom by the article being rolled. In such mountings the upper roll falls upon the face of theA lower roll upon delivery ofthe article, and 'soon produces a kind of granul ati on or imperfection technically yknown as spalling,7 requiring frequent returning or reiitting with considerable expense. Vith my improved roll-mountings this difficulty is wholly obviated, for, as before stated, the journal-boxes C bear upon each other, (see Fig. 3,) even in the closest positions of adjustment, so that these boxes prevent actual contact of the roll-faces and take all concussion or force of reaction when the rolled article is delivered. This I consider an important feaaccuracy of adjustment, and much of the time, labor, and skill heretofore required in lining and adjusting the rolls preparatory to use will be saved by this improved mounting.

I claim herein as my inventionl.. The combination of rolls B, housings A, cylindrical journal-boxes C, having journalbearings eccentrically located therein, `and gear mechanism connecting the boxes, substantially as set forth, whereby provision is made for adjusting the-rolls toward and from each other, and for counterbalancing the weight of one by the other.

2. The combination of rolls B, housings A, having slots A therein, and cylindrical journal-boxes C, having `journal-bearings eccentrically located therein, such boxes also bearing one against the other within the housingslots, substantially as set forth, whereby contact of the rolls is prevented on delivery of the rolled article.

3. The combination of two or more metalreducing rolls B, two housings A, having slotopenings therein, with rounded ends or seats a, and cylindrical j ournal-boxes C, having bearings eccentrically located therein, such boxes being seated upon the rounded ends of Ythe housing-slots, substantially as set forth.

4. The combination of rolls B, housings A, having openings A therein, cylindrical `journal-boxes C, having roll-bearings eccentrically located therein, the length of openings A being equal to the sum of the diameters of the journal-boxes, rand gear mechanism for rotating the journal-boxes simultaneously in opposite directions, substantially as set forth.

5. The combination of rolls B, housings A, cylindrical journal-boxes C, having roll-bearings eccentrically located therein, gears E, connecting the journal-boxes, and worms E', substantially as set forth.

In testimony whereof I have hereunto set my hand. I

ROBERT A. CARTER.

Vitnesses:

R. H. VHITTLESEY, C. L. PARKER.

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