US406201A - bodge - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

M. B. DODGE.Y

ORE GONGENTRATOR. No. 406,201. v Patente-d July 2, 1889.

i, f uw (No Model.) 2 Sheets-Sheet 2.

M. B. DODGE.

ORE CONGENTRATOR.

Patented July 2, 1889 UNITED STATES PATENT OFFICE.

MILES B. DODGE, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO PARKE &

LACY, OF SAME PLACE.

ORE-CONCENTRA-roa.

SPECIFICATION forming part of Letters Patent No. 406,201, dated July 2, 1889.

Application filed July 6, 1888. Serial No. 279,208. (No model.)

-1o minerals or other substances.

It consists in certain details of construction, all of which will be more fully explained by reference to the accompanying' drawings, in which- Figure l is a perspective view of my apparatus. Fig. 2 is an enlarged perspective view of the upper part of the feed-hopper and the overliow-troughs. Fig. 3 is a longitudinal vertical section of the machine.

zo A is the inclined shaking-table, having the surface B covered with rubber, and upon this table the material is deposited by means of holes C in the boxD, which extends transversely above the table, as shown. The material is delivered into the box D from the segmental receiver E, being distributed by the rotary arms F, as shown.

G is a hopper, having a plug H, as shown, fitted into its lower end, with a small perfo- 3o ration of suflicient size to allow the thin pulp to pass through as rapidly as may be desired,

this pulp being discharged into the segmen-V tal receiver E. In order to separate the coarser material which would not pass through the plug H, the spout I, which brings the material from the battery or other point of supply, discharges into the box J, having' a screen bottom K, which permits only that portion which is sufficiently line to pass through, the 4o other portionbeing removed or otherwise discharged from time to time.

The table A is caused to oscillate or vibrate endwise by means of a cam L and spring M, the cam forcing the table in the directionu of its length and toward the lowest point of its inclination with a gentle movement, while the spring M brings it back in the direction of its highest end with a sudden sharp motion, the movement being abruptly checked 5o by the upp'er end of the table striking against the adjustable bulfers N, this operation bein g similar to that shown in other machines of this class.

Vater is supplied through holes in the pipe O, and, being discharged upon the upper end of the table, flows downward, carrying the lighter material to the lower end of the table,

while the heavy mineral is gradually brought toward the upper end by the constant jarring caused by the abrupt stoppage of the table, 6o as above described.

In feeding the pulp upon this class of tables considerable difficulty is encountered by reason of too great a supply of water with the pulp which is delivered upon the table, and this seriously interferes with the proper action of the current discharged upon the upper end of the table from the pipe O.

In order to regulate the discharge of water and material upon the table, I have devised 7o the hopper G, above described, and the plug H at the lower end, having the small opening, enables me to provide a constant feed for the table,which is just sufficient, so that the current from the pipe O will do its work eiiiciently 7 5 in carrying off and discharging the gangue or lighter material, while the sulphurets and heavier material gradually move up the surface B. The trough D, extending across and near the surface of B, having the holes C 8o about an inch apart, will deliver the pulp upon the table properly distributed, and at the same time this arrangement of the holes leaves ample space between them for the flow of Water and lighter material, which it is desirable to have pass down the table.

In order to dispose of any surplus water and light material which is discharged into the hopper G, it is allowed to flow over the edges at P, Figs. 2 and 3,@these edges being 9o somewhat lower than the top of the hopper, so as to allow the overliow to discharge into troughs Q upon each side of the hopper, and this discharge flows into the pipe R, by which it is led directly into the segmental receiver 95 S, which is constructed similarly to the one shown at E, this receiver having also the rotary arms or distributers T, similar to those at F. This lighter material is discharged over the bar U,which extends across the lower 10o edge of the receiver S, and the material thus discharged falls upon the lower portion V of the inclined table A. rlhere is always a small portion of the heavier material which is pulverized so line that it will not be carried up ward against the moving current by the motions of the oscillating table, and this material will some of it pass downward through the pipe R and be received upon the table at V, and some of it, passing from the table B over the transverse riiicle \V,will` also fall upon the table V below the riiiie, and the whole of it is stirred up and agitated by the pins X, which project downward from the bar U, so as to dip into this material, the movements of the table causing these pins to act as stirrers in the same manner as if the pins themselves were movable. The heavy'fine material which comes upon this table is thus caused to settle to the bottom, while the lighter gangue iiows olf over the lower end, the riiiies or steps Yarranged at this end preventing the more valuable portion from liowing ed with it. This valuable material which falls upon the table V is shoveled out from time to time and saved.

The upper end of the table B has a concave depression a, into which the sulphurets and other valuable heavy material are gradually carried by the concussion of the table, and this mineral is discharged through the opening or passage l) inte a trough or receiver c. A considerable quantity of line or oured mercury will always accompany the mineral, and if the discharge-opening b were level with the surface of the table all this mercury would be carried out with the mineral. In order to separate it from this mineral and save it, an elevated portion d is formed in the concave upper end a. of the table. This elevation d has the opening l) made through it. As the valuableheavy mineral accumulates so as to be above the top of this elevation, it is manifest that it will discharge continuously from the opening h into the receiver c; but as the mercury is considerably heavier than any other portion it will settle down into the depression or eoncavity a, and will not go od' through the opening l).

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

l. The hopper G, provided with the box J, the screen K, and the troughs Q upon each side of the hopper, said troughs having the overow-edges P, in combination with the perforated plug ll', for regulating the discharge from the hopper, substantially as herein described.

2. The hopper or receiver G, provided with the screen K, the overflow-passages, and a regulating dischargeplug l-I, in combination with the segmental receiver E, the rotary distributing-arms F, and the box D, placed between the receiver E and the table B, and having perforations C made through it, so as to leave space for the downward flow of material on the surface of the table l between the points Where the pulp is supplied to the table, substantially as herein described.

3. The hopper G, provided with the screen K, the overflow pipes or passages, and the discharge-pipe R, in combination with the supplemental receiver S, distributer T, discharging upon the surface V of the table below the riflie W, and. the stirrers or agitators X, substantially as herein described.

In witness whereof l have hereunto set my hand.

MILES B. DODGE.

lVitnesses: t

JOHN E. IIAMILL, Janus 'F.iNsnnv.

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