US340720A

US340720A - Ore crusher

Info

Publication number: US340720A
Authority: US
Publication date: 1886-04-27
Anticipated expiration: 1903-04-27

Description

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0. 2 .l, u m, .m 3 M a o w N N, PETERS, Phnm-Lmwgmpher, whingwn. D. C,

3 Sheets-Sheet 2.

(No Model.)

S. R. KROM ORE GRUSHBR.- y

No. 340,720. Patented Apr. 27, 1886.

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3 Sheets-Sheet 3. S. R. KROM.

(No Model.)

ORE GRUSHER.

No. 340,720. PatentedApr. 27, 1886.

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UNITED STATES PATENT GEEICE.

STEPHEN R. KROM, OF PLAINFIELD, NEW JERSEY.

ORE-CRUSH ER.

SPECIPCATON forming part of Letters Patent No. 340,720, dated April 2'7, 1886.

Application filed May 1S, 1885. Serial No. 165,794. (No model.)

To all whom it may concern:

Beit known that I, STEPHEN R. KROM, of Plainfield, in the county of Union and State New Jersey,have invented an' Improvement in Ore-Crushers, of which the following is a specification.

In this crusher there are two rollers, one of which is supported in swinging pillow-blocks. The other roller is supported in either stationary or swinging pillowblocks, both above the bed-plate. Close underneath the bearings in the pillow'blocks holes are cast to receive the tie-bolts. These tie-bolts are to hold the pillow-blocks in proper relation to each other. Both pairsof the pillow-blocks may be made to swing, and in this form may be preferable, for lessening the cost of the machine.

The great advantagein having the bearings of atleast one roller swing for adjusting the roller and for compensating for wear of the crushingfaces, instead of employing sliding pillowblocks on the cast iron bed-plates, is that where the pillow-blocksslide any looseness on the bed of the movable bearings causes injury to the top surface of the bed-plate and bottom surface of the pillow-blocks from particles of sand or ore which may get between the two surfaces as the parts move or vibrate during the crushing of the ore. Besides this, heretofore the two movable bearings had to be drawn up separately, and it required care to keep the rollers and shafts parallel with each other. In this machine the two swinging pillow-blocks are united by a strong shaft, and both move together.

In the drawings, Figure l is a plan view of the machine, partly in section. Fig. 2 is an elevation with the housing and shafts of the rollers in section near the journal-boxes. Fig. 3 is an end view of the swinging pillow-block. Fig. 4 is a side view of the same. Fig. 5is an end view of one of the rollers, showing the split tapering head. Fig. 6 is an end view of the tapering head, which is shrunk upon the shaft ofthe roller; and Fig. 7 represents both rolls supported in swinging bearings.

The rolls A and B are alike, each roll being composed of a steel band or tire, a, the inner surfaces of which are tapering. These tires are supported upon heads C D, with corresponding tapers. One of these cone-shaped heads on each shaft is split on one side, but

the other `is not split, but is shrunk ou, or otherwise securely fixed on the shaft. The bolts d, passing through holes in the heads C D, are used to draw the heads together, and consequently the tires are firmly held,and the action of drawing the split heads D within the tires causes the split heads to close tightly on the shafts. Heretofore both heads C D were split; but I have discovered that it is a great advair tage to have one head rigidly fixed to the shaft without the possibility of becoming misplaced, and this serves as a permanent guide for placing the tires in their proper position on the shaft.

G is the main shaft of the roll A, and to this the drivingfpower is applied by the pulley H.

K is the shaft of the roll B, and upon this is a pulley, L, to which power is applied to revolve the said roll B, for producing the bite on the ore.

The shaft G is in pillow-blocks E, Figs. 1 and 2, which are represented as bolted rigidly upon the bed-plate E. The journal-bearings in the pillowblocks are placed at an inclina tion, so that the weight of the rolls themselves, and the pressure-on the bearings due to crushing the ore, are taken on the portion of the bearings formed with the pi1low-blocks, 4and no strain comes on the caps or cap-bolts. The shaft K of the roll B is received into j ournal-boxes lc of the swinging pillow-blocks M, and the swinging pillow-blocks are supported on the pivot-shaft N, the ends of which are received into holes in bosses projecting from the bed-plate at each side.

The swinging pillow-blocks can be made as separate pieces; but for reasons before set forth it is preferable to unite the two with the stout shaft m. Holes at o are cast into the swinging pillowblocks, just below the bearings, into which the ends of the bolts O are pivoted by means of orosspins o. The tiebolts O pass also through holes in the stationary pillow-blocks E, and the nuts on the tiebolts O are employed for holding the two rollers in proper relation to each other and to draw them together to compensate for wear.

It willrbe apparent that in consequence of the portion E being lower than the main portion of the bed E the caps of the swinging pillow-blocks M can be easily removed or re-' placed, and the top of the portion F of the bed is depressed, as indicated by dotted lines in Fig. 2, so that the necessary space is given for introducing the swinging bearings between the side portions of the bed-plate through which the shaft N passes. The bed-plate is strengthened by the cross-plates F2 F3, (shown by dotted lines, Fig. 2,) and between these the crushed ore is allowed to fall away into a suitable receptacle.

I make use of a curved apron, R, introduced beneath the roller B and extending backwardly and upwardly from the cross-plate F2, so as to form a chute, and at the same time a cover for the connecting-shaftm of the swinging pillow-blocks M, and this apron catches any pieces of crushed ore that may drop from the roll B and directs the same to the discharge-opening between the plates F" and F3.

The housings S S for inclosing the rollers, for retaining the dust produced from crushing the ore, and for forming supports for the hopper, are made of iron, except their upper portions, T, which are made of wood for greater convenience of removal. rIhe housings rest upon and are bolted to the bed-plate.

' The ore to be crushed is allowed to flow down the incline chutes u u and between the rollers7 and to prevent the ore from running off at the ends of the rolls I have provided cheek-pieces V, generally the same as those described and shown in my application tiled August 4, 1884, Serial N o. 139,564, to fit quite close to each end of the rolls. These cheek-pieces are held in stocks, and are removable in order to insert new cheek-pieces, as may be required. The stocks which hold the cheek pieces-are adjustable sidewise, to compensate for wear of the rollers. These stocks are supported by the housing-plates, which are braced and adapted to hold the stocks for the cl1eelc-pieces,and also to support the hopper U.

In Fig. 7 I have represented the swinging bearings as duplicated, so that both rollers are supported by such swinging bearings. It is to be understood that the foregoing description ofthe swinging bearings for one roll applies to the swinging bearings of the other roll, and the only difference is that the holes iu one set of swinging bearings for the tiebolts O should be round, and tubes or sleeves applied around the bolts between the swinging bearings and the nuts l?. This takes the place ofthe pivot-bolts o and allows the nuts to be set up the same as in Fig. 2. the heads of the bolts may be made as segments of acylinder in place of using the pivotpins o'. It will now be understood that as the surfaces of the rolls A B wear away the nuts P can be screwed up, after the stop-screws Q between the frame and swinging pillow-blocks have been turned back, and the movable bearings will swing forward on their axis N. The pins o', which hold the tie-bolts D to the swinging pillow-blocks, are so placed that the tiebolts are but slightly thrown from a horizontal position as the parts swing. The tie-bolts are If desired,

also placed as close to the bearings as possible, so that the strain due to crushing the ore is almost directly received on the tie-bolts and as little as possible thrown on the bed-plate.

I herein distinctly disclaim connections from xed standards to moving pillow-blocks when placed above the roll-bearings in roller grinding-mills, as they have been used, but they o being beneath and close to the shaft K of the roller B, substantially as specified.

2. vThe combination, with two crushing-rollers and their shafts and bearings, of swinging pillow-blocks having a pivot-shaft at their lowe'r ends and a rigid connection extending across from one pillow-block to the other at the lower ends, a bed-plate beneath such rollers, receiving the pivot-shaft of the swinging pillow blocks, and adjustable tiebolts between thepillow-blocks of one roller and the pillow-blocks of the other roller, substantially as specified.

3. The combination, with the crushing-rollers, their shafts and bearings, of swinging pillow-blocks, a pivot-shaft at the lower ends of such pillow-blocks, a bed-plate below the swinging pillow-blocks and to which they are pivoted, and tie-bolts and adjusting-nuts be'- low the shafts of the rollers and connecting the pillow-blocks of one roller and the pillowblocks of the other roller, substantially as specified.

4. The combination, with the crushing-rolls A B, their shafts and bearings, of swinging pillow-blocks, bed-plates, a pivot-shaft between the bed-plate and the lower ends of the swinging pillow-blocks, and an inclined apron, B, below the roller B and between the swinging pillow-blocks, substantially as specilied.

5. The combination, with the crushing-roller shafts and tires, of one hub fixed permanently on each shaft, and one split hub on each shaft, and bolts or nuts to draw or force the split hubs toward the stationary hubs, so that the tires will be firmly fixed and held in place and the split hubs will close tightly on the shafts, for the purpose and substantially as set forth.

6. The combination, with the crushing-rollers, their shafts and bearings, of the swinging pillow-blocks M M, the tubular connection m between the same `at their lower ends, the bedplate with the projections between which the swinging pillow-blocks are received, and the IIO pivot-shaft; passing through the bed-plate and blocks, andthe screw-stops Q, for the swinging pillow-blocks, substantially as specified. pillow-blocks, substantially as specified. [o 7. The combination, in an ore-crushing ina- Signed by me this 13th day of May, A. D. chine, of two rollers, their shafts and bearings, 1885. 5 swinging pillow-blocks, a bed-plate, e pivot- S. R. KROM.

shaft connecting the lower ends of the swing- Witnesses: ing pillow-blocks to the bed-plate', the tie- GEO. T. PINOKNEY, bolts between the respective pairs of pillow- WILLIAM G. MOTT.