US309189A - blevney - Google Patents

Description

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JOHN BLEVNEY, OF NE\VARK, YEW JERSEY.

WIQ CHINE FOR PULVERIZING ORES, 81,0.

SPECIFICATION forming part of Letters Patent No. 309,189, dated December 16,1884.

.\pplicnlion filed January :26, 1854.

To all 1071/0712, it may canoe/12 Be it known that I, JOHN C. BLEVXEY, a citizen of the United States, and a resident of the city of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Machines for Pulverizing Ores, &c., of which the following is a specification.

The object of my invention is to provide a mill for grinding ores and other substances of such construction that the ores themselves will serve as grinding'surthces, while the reduction will be assisted by knives or breakers between which portions of the ores are forced.

In the drawings, Figure l is a side sectional view of a mill embodying my invention. Fig. 2 is a plan view with the cover of the mill removed. Figs. 3 and 4: are enlarged detail views showing the knives or breakers and adjacent parts, and Fig. 5is a detail perspective view of the means for adjusting one of the grinding-wheels relative to the other.

A. indicates the casing ofmy mill, which sup ports the shaft B, carrying the driving-pulley O, and having a suspensory bearing in averticallyadjustable sleeve, 1), as fully described in my application No. 118,837, filed simultaneously herewith.

To the shaft 13 are fixed the grinding-wheels E and E, each of which consists of a disk, 0, having aserics of radial arms or ribs, 0, the pockets formed by the arms or ribs being open at the peripheries of the wheels.

To the outer end of each of the ribs 0 is fastened a breaker or knife, 6-, preferably of hardened steel, the connection being made by a tongue and groove, as shown, the grooved knives being held upon the tongues on the ribs by clamps c", fastened by set-screws e, the disks e being slotted, so that the knives pass entirely through them vertically. As these knives are groovedin their centers they may be reversed when worn, to bring a new corner into working position.

The sections of the casin A opposite the wheels E and E are provided with inwardlyprojecting annularfianges to, having ribs a, to which are secured steel breakers or knives a similar to the knives or breakers a", and having tongue-and-groove connections with their ribs, so as to be reversible. The knives a are preferablyheld against their ribs by clamping (No model.)

blocks a, abutting against projections on the inside of the casing, and said knives are held in position by the screws a", passing loosely through the casing and tapped into said blocks. The ribs a form open pockets, into which the material to be ground is forced, as will be explained presently.

. As the stationary and rotary knives are inclined outward at their tops it is obvious that a vertical adjustment of the shaft B, to which the wheels E and E are fastened, will move the adjacent edges of said knives nearer to or farther from each other, as circumstances may require; but for convenience in assembling the machine, or to provide for compensating for greater wear of the upper sets of knives, the wheel E is made adjustable on the shaft inde pendently of the wheel E. The adjustment of the wheel E is effected by means of a thread ed collar, F, secured to the hub of the wheel It by one or more pins, f. An internallythreaded gear-wheel, f, is fitted to the collar F, and meshing with said gear-wheel is a pinion, y, carried by a small shaft, G, supported by a boss on one of the ribs 0. By turning the shaft G the gear-wheel f will be rotated,

thus raising or lowering the wheel E. The gear-wheel j" thus serves as an extension of the collar F, which may threfore properly be called an extensible collar. It will be understood that before adjusting the wheel E the screw collar or nut Z) on the shaft B will be loosened, and will be tightened again after the adjustment has been made.

Instead of making the breakers or knives c and a removable and reversible, as above described, they may be inserted in the molds before casting the wheel or casing, and thus become integral with their ribs. By making the number of the knives on the wheels larger or smaller than the number of the stationary knives, or by arranging these knives at varying distances apart, only one set of knives will come together at the same time.

The operation of my machine is as follows: The material to be reduced comes in at the inlet H and falls on the disk 6 of the wheel E. The rotation of the latter forces the material outward, filling the stationary pockets formed by the flanges a and ribs a. hen the latter pockets are filled, there will be a mass of stationary material, against which the mass of moving material carried by the wheel E will be constantly forced, and thus the moving and stationary masses will serve as grinding-surfaces for each other, while the larger pieces or particles, being constantly caught between the rotary and stationary knives, will be sharply broken, thus continually supplying sharp grinding particles to assist in the reduction. The pulverized material, after passing the wheel E, is received by the wheel E and the grinding operation is repeated, after which the mass falls into the receiving-pan and finds exit at the outlet I. It will be understood that the disks 6 and the adjacent flanges a serve as gages to determine the fineness of the passing reduced material.

I do not claim herein the method (incidental to the operation of the machine) above described for reducing and pulverizing ores and similar substances, as I reserve the right to claim the same in a future application.

Having thus described my invention, I claim 1. In agrinding-mill, the combination, with a casing provided with an in wardly-proj ecting flange and ribs, forming a series of stationary pockets, of a revoluble wheel consisting of a solid or imperforate disk and radial ribs, forming a series of pockets, which are open at the periphery of said wheel toward said stationary pockets, substantially as set forth.

breakers or knives, said disk and ribs forming revoluble pockets, substantially as set forth.

3. In agrinding-mill, the combination, with the shaft thereof and a grinding-wheel, of an extensible collar, said wheel and collar being both connected with said shaft, and thereby adapted to rotate therewith, substantially as set forth.

4. The combination, with the shaft B and the attached grinding-Wheels E and E, of the threaded collar F, placed between said wheels, and connected with said shaft, and thus adapted to rotate therewith, the gear-wheel f, fitted to said collar, and the shaft G, carried by the wheel E, and provided with the pinion 9, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 24th day of January, 1884.

JOHN C. BLEVNEY.

\Vitnesses:

IVIARY H. BLEVNEY, GEORGE H. VrNcENT.

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