US622572A - walker - Google Patents

Description

No. 622,572. Patented Apr. 4, I899.

H. WALKER. SEPARATING AND GRADING MACHINE.

(Applicatiqn filed Oct. 2, 1897. Renewed. Feb. 18, 1899.)

2 Sheets$haei I.

(No Model.)

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No. 622,572. Patented Apr. 4, I899. H. WALKER.

SEPARATING AND GRADING MACHINE.

(Application filed Oct. 2, 1897. Renewed Feb 18, 1899.)

(No Model.) 2 Sheets-Sheet 2.

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NTED STATES rrrcn. I

PATENT HARRY XVALKER, OF LEEDS, ENGLAND, ASSIGNOR TO IVILLIAM JOHNSON,-

' OF SAME PLACE.

SEPARATING AND GRADING MACHlNE.

SPECIFICATION formingpart of Letters Patent N0. 622,572, dated April 4, 1899.

Application filed Qctnher 2, 1897. Renewed February 18, 1899. Serial No. 706,063. (No model.)

To all whom it may concern:

Be it known that I, HARRY WALKER, a subject of the Queen of Great Britain, residing at Leeds, in the county of York, England, have invented new and useful Improvements in Separating and Grading Machines, (for which Letters Patent have been granted in England, No. 8,274, dated April 20, 1896, and No. 16,616, dated July 27, 1896,) of which the following is a specification.

This invention has reference to improvements in machinery employed in separating and grading various kinds of materials, such as mineral ores, of different sizes or specific gravities, but particularly to that class composed of two or more grades,whereby the finer particles are drawn away or separated from the heavier or coarser particles prior to the latterfalling by gravity. Its object is to accomplish this by submitting the material operated upon to a plurality of distinct separating actions, namely: First, on the material entering the feed-chamber after it has been acted upon by a disintegrator or sieve the fine particles are drawn by the suction of a fan either directly or through a cone in a chamber which will hereinafter be termed the dustchan1ber; second, While the heavier material or tailing is falling by its gravity into the feedchamber it is submitted to the action of a column of air entering the said chamber through, say, a suitable pipe, and this causes the finer particles to be carried upward and drawn by the fan into the dust-chamber 3 third,when the heaviermaterial falls upon or strikes against, say, a fixed beater-plate the finer particles (if any) will by the concussion be separated from the heavier material and conveyed by the suction of the air entering the feed-chamber through the before-mentioned pipe into the cone, from which it is drawn by the fan into the fine chamber, or it may be drawn by the fan into the dust-chamber Without the use of a cone. These objects are attained by vmechanism illustrated in the accompanying drawings, in which- Figure 1 is a sectional elevation; Fig. 2, a

front elevation; Fig. 3, a sectional elevation of separating apparatus in which the cones are dispensed with; Fig. 4, a sectional eleva-' tion drawn at a right angle to Fig. 3.

Like parts in all the views are marked with similar letters of reference.

The casing A is arranged to form two distinct chambers or compartments F and G and whicharehereinaftertermed,respectively,the feed-chamber F and the dust-chamber G. The casing may be made of any suitable materialsuch as, for example, wood or sheet iron or a skeleton framework of Wood coverered with sheet-iron. In the dust-chamber G is mounted vertically and fixed on a horizontal shaft D a fan B of any ordinary construction, or an air-propeller of, say, any suitable type, and a dust-disk O, which is designed to prevent the dust from passing into and clogging the bearing of the shaft D. At the opposite end of the horizontal shaft D and within the feeding-chamber F is mounted vertically and fixed a disintegrating-spreadler C. The disintegratingspreader, which is somewhat similar in construction to a claybreaker, consists of a hub or disk having a number of rods or arms fixed at intervals to its face and projecting toward the casing at or about a right angle to the face of the hub and in a line with the axis of the horizontal shaft. The fan B, disintegrating-spreader 'O, and dust-disk C may rotate in a vertical or substantially vertical plane. The ends of shaft D of the fan and spreader are carried in bearings E E, mounted on brackets attached to the casing A.

The two chambers F and G may be arranged side by side, as at Figs. 3 and 4, or connected together by a suction-cone H and a damper box or pipe I, provided, if required, with a coned end, as shown at Figs. 1 and 2. A circular opening or inlet J is provided at the end of suction-cone H nearest to the dust-chamber G. Over or across this opening J maybe provided and fixed, if so desired, a number of baffle-plates or boards K. Thesebaffle-plates K may either be stationary or made to move in any desired direction by any suitablemeaus, and they may also be of any desired shape. The fan B is made to rotate against the inlet J and baffle-plates K in chamber G. The

spreader O rotates in chamber F close to casing A and in close proximity to feed-inlet L. The pressure of air from the dust-chamber G to the feeding-chamber F may be regulated by damper I.

The chambers F and G are arranged to terminate at their lower ends, as in Figs. 1 and 2, in contracted outlets (respectively marked T and S) for the separated material, or only one chamber may be contracted, as in Figs. 3 and 4.

The top portion of casing A can he made, if sodesired, so that it can be removed at pleasure. l/Vhen so desired, an angle-iron joint M is provided for this purpose, and a liftingiron N is attached to casing A, as shown, for the purpose of lifting the top half or the whole of the casing. On each side of vcasing A are provided carrying-brackets O O for securing the separator in any desired position.

The chamber F is further provided with a fixed baffle-plate P, which is fixed below the damper-opening I.

A number of doors R (see Fig. 2) are provided for cleaning out the interior of the apparatus.

Over the cone connecting the two chambers may be fixed a coarse screen for the purpose of preventing any large or lumpy material, rags, or the like entering the fine chamber.

At Figs. 3 and 4 the material to be operated upon is shown as being fed into a large hop-' shaft D in chamber F.

per L, arranged over the feed-chamber F, from which it passes to the inclined chute U, armed with a fixed or movable grating V to form a sieve or riddle, through which the graded material passes to be acted upon by the fan B. This enables the disintegratingspreader, cones, and baffle-plates above described to be dispensed with should it be so desired.

The action of the apparatus is as follows: The material to be separated is fed into the feed inlet or hopper L, which delivers the material directly to chamber F, as at Figs. 3 and 4, or into the disintegrating-spreader O, fixed, as before described, as at Figs. 1 and 2, on At this point by the action of the disintegratingspreader the material is thrown or formed into a shower or spray, thereby disintegrating each particle or disengaging or separating the particles one from each other. The fan or air-propeller B, rotating in the dust-chamber G at the desired speed, produces a certain amount of suction which is capable of attracting or drawing the particles of a certain specific weight from the shower or spray (caused by the revolving of the spreader 0) through the cone H, baffleplates K, and opening J into the fine chamber G. I The contents of chamber G fall by their gravity and pass out of it by way of outlet S. The heavier particles contained in the shower in chamber F and which resist the suction from fan B descend down the conical portion of chamber F and out by way of outlet T. Thecoarser portion of the material, however, before reaching the outlet T comes into contact with the fixed baffle-plate P, which is the means of checking the velocity of the descending material and also causing any fine particles passing out with the coarse material to be further disengaged, whereby they are drawn up and carried through opening J, as before described, by means of fan B. 1 Between the chambers F and G may be fixed, as described, the damper-box I, consisting of, say, a pipe containing the clack or damper I, which is opened or closed by means of a handle U, arranged on the outside of the casing A. When this damper or clack is open, communication is made through openings in the damper-box I, so that any of the lighter particles which may have been missed by the first action of the fan and have passed partly down chamber F may now be drawn through opening J into chamber G by means of the surplus air from fan B, which is allowed to return back again into chamber F by way of damper-opening 1.

Having now particularly described my invention and the method of carrying it into practice, what I claim is 1. An apparatus for the purpose herein specified, comprising a casing made in parts and provided with an inlet-hopper and divided into two compartments, said compartments being connected at the upper portion thereof by a suction-cone provided with baffie-plates, and at a lower point by a damper-pipe provided with a conical end and having a valve,-

a horizontal shaft arranged to pass through and revolve within the said chambers and through the center of the suction-cone, and a disintegrating-spreader mounted upon said shaft within one compartment, and a fan mounted on said shaft within the other compartment, substantially as shown and described.

2. An apparatus for the purpose herein specified, comprising a casing made in parts and provided with aninlet-hopper and divided into two compartments, said compartments being connected at the upper portion thereof by a suction-cone provided with baffie-plates, and at a lower point by a damper-pipe provided with a conical end and having a valve, a horizontal shaft arranged to pass through and revolve within the said chambers and through the center of the suction-cone, and a disintegrating-spreader mounted upon said shaft within one compartment, and a fan mounted on said shaft within the other compartment, and a fixed baffle-plate arranged in one compartment by whichv the material under treatment is subjected to a final separation of the finer particles from the coarser, substantially as shown and described.

3. In apparatus for separating substances of differentsizes or specific gravities, the combination of a casing made in parts and armed with an inlet-hopper and divided into two compartments, said compartments being connected together at the upper portion by a suction-cone armed with baffle-plates, and at a lower point by damper-pipe provided with a coned end and armed with a valve, a horizontal shaft arranged to pass through and revolving within the said chambers and through the center, of the suction-cone, a disintegrating-spreader mounted upon said shaft within one compartment, and a fan and dust-disk mounted 011 said shaft within the other compartment, and a fixed baffle-plate arranged in one compartment by which the material under treatment is submitted to a final separation of the finer particles from the coarser, all arranged substantially as set forth.

4. An apparatus for the purpose herein specified, consisting of two upright casings which are open at their lower ends, said casin gs being provided with a conical connection the apex of which is cut away and opens into one of said casings, baffle-plates arranged at one side of said opening, a shaft passing transversely through said casings, and 0e11- trally through said openings, a fan mounted on said shaft in one of said casings, a disintegrating-spreader mounted on said shaft in the other casing, an inlet-hopper connected with the outer wall of said last-named casing adjacent to said spreader, and a damper-box HARRY \VALKER,

Witnesses:

WILLIAM SADLER, ALAN BALOH.

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