US229650A - Beyan tyson - Google Patents

Description

B. TYSON. Gold Saving Apparatus.

No. 229,650. Patented July 6,1880.

UNITED STATES PATENT OFFICE.

BRYAN TYSON, OF WASHINGTON, DISTRICT OF COLUMBIA.

GOLD-SAVIING APPARATUS.

SPECIFICATION forming" part of Letters Patent No. 229,650, dated July 6, 1880. Application filed October 1 7, 1879.

To all whom it may concern:

Be it known that I, BRYAN TYSON, of Washin gton, District of Columbia, have invented a Gold-Saving Apparatus; and I hereby declare the following to be a full, clear, and exact description thereof.

' My invention relates to certain improvements in apparatus for saving the precious metals, quicksilver, &c., which may be contained in pulp, tailings, or other form of pulverized ore; and it consists in an adjustable trap located in the main flume to lead the tailv ings to a short sluice provided with transverse fixed and movable riffle-bars, the tailings then passing to an oscillating pan or jigger for concentration, which will be more fully described by referring to the accompanying drawings, in which- Figure 1 is a view of my apparatus. Fig. 2 is a section of the jigger.

A is a trough, which may receive the tailin gs or material from what is known as the undercurrent of a sluice, or it may in some cases take it directly from the flume or sluice. The bottom of this trough may be formed of iron plates B, as shown. This bottom extends a certain distance along the trough, where it ceases. At this point an angular plate, l, is fitted into the trough so that its upper edge stands a short distance in front of the bottom plates and projects a little above them.

The plate or plates 0 are secured to an inclined partition which extends across the trough between the upper and lower floors, B B, of the flume, and it may be adjusted so that its upper edge will stand higher or lower, as desired, and also to limit the size of the opening C, through which the heavier particles fall. This adjustment is most easily accomplished by means of a slot or slots in the lower part of the plate 0 and a set screw or nut which passes through this slot. By loosening this nut the plate may be raised or lowered, and again secured by tightening the nut. This edge acts as a sort of skimmer, and separates the heavier material from the lighter. The latter, after passing over this edge, falls into the trough at B beyond, it being considerably lower, as shown, and may be thence discharged. The heavier portions fall into a receptacle, D, beneath the bottom B, and, being stirred up and kept from packing a flow of water, will pass over the transverse gratebars E E, which extend across the flume F, a little above its bottom. The bars E are so mounted that by the aid of arms they may be oscillated, and thus stir up the material and prevent it from packing and becoming solid, at the same time allowing the quicksilver and amalgam to settle to the bottom, to be afterward collected. From this series of gratebars and the succeeding stationary bars E the material rises over an incline at H, Which tends to hold a certain quantity of sand all the time in the flume, and, passing across a level space, I, with a series of transverse slots or grooved rifiies, J, falls into anotherdepressed receptacle, M. passes into a transverse trough, L, which conveys it to an inclined sluice, N.

The lower end of this sluice is provided with an angular adjustable skimming-plate, 0, similar to that described at G in the sluice A. The lighter valueless portions are discharged over this plate, while all the heavier portions Will be detained, and, falling into the sluice P, will be discharged byit into the pan or jiggerQ. This pan consists of the outer portion, Q, and two or more concentric inner cylinders, U X, which are secured to the same bottom, so as to oscillate together. The cylinders U and X are successively lower than the outer pan, Q, so that the discharge will eventually take place through the inner cylinder, which is either bottomless or has an opening of sufficient size made through it to permit the escape of the tailings.

R is a plate for the reception of concentrations as they pass from the sluice-box P, and S is an upright flange upon this plate. The plate It projects from a flange, T, which surrounds the top of the inner oscillating cylinder, U, as shown Just beneath this flange is the circular stationary rim V, which is supported from the frame-work above by the rods Z Z. This rim may be plain, or it may be subdivided by angular plates upon the top, having their broader ends in ward, or it may have From this point the material a plate or flange on the top, as shown. At the point where this rim passes beneath the plate R, I form a lug or projection, W, which prevents the sand from becoming packed beneath the plate It.

The flange T, before mentioned, may have its outer edge in an octagon or other form and slightly depressed below its point of attachment to the inner cylinder. to facilitate the process of concentration. The edge of the cylinder U stands a little above the rim or flange T, and thus retains a stratum of sand upon it all the time.

The innermost cylinder of all, X, may have arim and flange similar to those connected with the cylinder U.

Y Y are pipes having discharge nozzles above the plate R, and the process is aided by the action of this water.

A vertical shaft, a, is here shown as the driver for the different moving parts. Upon the top of this shaft is a crank, b, and a pitman from this crank connects with a sliding guide, 0, or it may connect directly with the rocker-arms (I upon the ends of the oscillating grate-bars E in the sluice F. These gratebars, it will be manifest, may be made of any desired form which will act to the best advantage.

A gear-wheel, 0, upon the shaft a meshes with the pinion f upon the shaft g, and a crank, h, upon this shaft is connected by a pitman, i, with the rocker-arm j, by which the jigger or pan Q is caused to oscillate at any desired rate of speed.

The operation of the apparatus will then be as follows: The sand or tailings containing valuable metals is allowed to flow down the sluice or trough A, and the plate or skimmer (J intercepts all the more valuable heavier portions, and causes them to fall into the receptacle 1), from whence they pass over the bridge or dam l) to the trough or sluice F, containing the oscillating and stationary ritlie or grate bars E. After passing these bars a second dam, at H, causes the material to rise and flow over the rifiie-bars K, with their intermediate spaces, J, after which it flows into the transverse trough or sluice L, and is carried to the jigger either directly or by means of other sluices, N P. A second angular skimmingplate, (),is interposed between the conveyingsluice and the jigger, so that only the more valuable and concentrated portions are conveyed to the jigger.

It will be manifest that as many sets of preliminary concentrating devices may be employed as are necessary to properly concentrate the material before it reaches the pan orjigger, where it falls upon the plate R. The vertical flange S holds the material at the circumference and prevents a too rapid flow toward the central discharge-opening, and also tends to precipitate the precious metals upon the plate before passing off into the pan.

The action of the stationary rim V, in conjunction with the oscillating octagonal rim or flange T, is to keep up a constant agitation of the material at and near the surface, and thus assist in the precipitation of the precious metals. Thus above the stationary rim V the sands will be nearly stationary, while a rapid motion takes places above the rim or flange T. Between the two a peculiar horizontal action takes place. The flange T being depressed at its outer edge, the precious metal will slide off to a place of safety as soon as concentrated upon its surface, and this action is facilitated by allowing the edge of the cylinder U to project slightly above the plate.

The effect produced in this jigger is thus to thoroughly agitate the material near the surface, from which also the discharge takes place, and thus assists to work the precious metals down to a place of safety.

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

1. The trough A, with its bottom B B, and the chamber D, as shown, in combination with the angular plate 0, having its upper edge made adjustable with reference to the bottom B and the opening into the chamber D by the slot and nut, substantially as and for the purpose herein described.

2. The trough A, with its angular plate or skimmer U, the receptacle D, and the dam D, in combination with the flume F, with its grate-bars E E, substantially as and for the purpose herein described.

3. The flume F, with its transverse dams D and H, in combination with the angular or other shaped transverse oscillating riffle-bars E, substantially as and for the purpose herein described.

4. The sluice A, with its separating or skimming plate 0, the receptacle D, sluice F, with its movable and stationary riffle-bars E E, and the final angular plate or skimmer O, in combination with the oscillating pan or jigger Q, substantially as herein described.

5. The pan consisting of the concentric cylindersQ U X, successively decreasing in height toward the center and having the dischargeopening through the inner cylinder, the angular rim or flange T, with its projecting plate R, for receiving the material from the sluice, and the vertical plate or flange S, in combination with the sluices N P, substantially as herein described.

6. The pan or jigger Q, having the inclined angular rim or flange T projecting around the cylinder U, below its upper edge, as shown, in

combination with the stationary rim or ring V beneath the flange, and acting in conjunction with it to settle and deposit the precious metals, substantially as herein described.

In witness whereof I have hereunto set my hand.

BRYAN TYSON.

Witnesses 5. H. N oonsn, FRANK A. Bacon's.

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