US608841A - Machine for separating gold - Google Patents

Description

No. 608,84I. Patented Aug. 9, I898. W. A. DARLING. MACHINE FOR SEPARATING GOLD.

(Appl at fildA g 18 1897) 2 Sheets8heet I.

(No Model.)

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No. 608,84l. Patented Aug. 9, I893.

W. A. DARLING.

MACHINE FOR SEPABATING GOLD.

(Application filed Aug. 18, 1897.) (No Model.) 2 Sheets-8heet 2.

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THE NORRIS Pzrsns cu. momumm WASHINGTON, n. c.

UNITE WILLIAM A. DARLING,

or GONDON, OREGON.

MACHINE FOR SEPARATING GOLD.

SPECIFICATION forming part of Letters Patent No. 608,841, dated August 9, 1898. Application filed August 18, 1897. Serial No. 648,658. (No model.)

To all whom it may concern:

Be it known that LWILLIAM A. DARLING, of Oondon, in the county of Gilliam and State of Oregon, have invented certain new and useful Improvements in Machines for Separating Gold; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to gold-separators; and it consists, essentially,of an inclined pan box with a series of pans arranged therein and having mechanism attached thereto for imparting a longitudinal and transverse reciprocatory as well as a swinging action,

which becomes so rapid as to move the goldbearing material being treated thereby in a rotary manner and similar to the motion imparted to pans in ordinary placer-mining.

.The invention further consists of the details of construction and arrangement of the several parts, which will be more fully hereinafter described and claimed.

The object of the invention is to provide a machine for use in localities where water is scarce and not requiring its use to any great extent, if at all, and when used only requiring a sufficient amount to produce a thorough separation of the gold from the material bearing the same. I

In the accompanying drawings, Figure l is a perspective view of a machine embodying the invention. Fig. 2 is a longitudinal vertical section on the line m :0, Fig. 1. Fig. 3 is a transverse vertical section on the line y y, Fig. 2. Fig. 4 is a plan View of the operating mechanism for the pan-box shown disconnected from the support for said box and illustrating in dotted lines the movements of the parts. Fig. 5 is a detail View of one of the pans.

Referring to the drawings, wherein similar numerals of reference are employed to indicate corresponding parts in the several views, the numeral 1 designates base-sills having end posts 2, intermediate posts 3'and 4; and braces 5, rising vertically therefrom. These posts are arranged in opposite pairs, and the post 4 and the pair of the end posts 2 nearest thereto extend above the posts 3 and 2 at the opposite end. Longitudinal strips 6 connect the upper ends of the rear posts, the posts 3, and are also secured to the posts 4, while similar strips 7 connect the posts 4 with the front end posts 2. The said posts are also connected by suitable cross-strips in order to form a support for the mechanism, which will be hereinafter referredto, and also provide for strengthening the supporting-frame as an entirety.

A pan-box 8 is employed in connection with the machine and comprises a series of stepped pans 9, each of which has a rearcurved wall 10, from which the bottom 11 extends up wardly and forwardly in a straight line and has its free end curled or curved over the adjacent vertical portion 12 of the succeeding pan and which continues from the upper termination of the curved wall 10, and the front end of each pan is made narrower than the rear of the next pan, into which it is fitted. All pans are bolted or riveted to the sides of the pan-box. The said pans are preferably formed of sheet metal-such as sheet-iron, galvanized iron, or copper-plate, as may be desired-and at the upper end of the pan-box a hopper 13 is'secured, wherein the dirt carrying the ore is shoveled or otherwise delivered.

Rising from the pan-box near the opposite ends thereof and from opposite sides are loopshaped metal straps l i, rigidly secured at their ends to thesides of the box and which extend across said box at a suitable distance above the upper edge thereof, and extending upwardly from the saidstraps are hangers 15,movably carrying grooved rollers 16, which travel on horizontal metal rods 17,1ongitudinally disposed and supported centrally of the width of the frame by adjacent cross-bars thereof, the rod at the rear end being in a lower horizontal plane than that at the forward end for giving the desired inclination to the pan-box. By this arrangement it will be seen 7 that the pan-box is suspended to swing freely on the rods'17, so as to be permitted to have a longitudinal as well as a swinging movement within the supportingframe, the parts being so proportioned and the operating mechanism so'timed as to prevent the opposite sides of the box from 'strik ing the adjacent side posts. p

Extending transversely across the front end posts 2 and at suitable elevation is a shaft 18, which, as shown, is supplied with a crank-handle 19 for the application of manual power; but it will be understood that any motive power may be applied to said shaft. The said shaft is form ed with a central crank 20,:to which is movably and loosely connected the rear end of a pitman 21, which extends forwardly and has its opposite end attached to oneIarm of angle-plate 22, movably secured to the said pan-box. The opposite end of the said angle-plate 22 has movably connected thereto an inner end of a transverse pitman 23, which extends outwardly through one side of the supporting-frame and is attached to an upper arm 24 of a bell-crank connection 25, comprising a bolt or pintle seated in brackets 26 and having on the lower portion thereof, belowthe arm 24, a second arm 27 and at a right angle to the aforesaid arm, and to which a supplemental pitman 28 is attached at its rear end. The forward end of the said supplemental pitman is secured to one end of an arm 29, mounted on the end of the shaft 18 opposite to that to which the power is applied. 1

In operation the dirt containing the ore is placed in the hopper 13, and after a sufiicient quantity has been received by the pan-box the shaft 18 is actuated and through the pitman 21 moves and throws the pan-box for-,1 wardly and rearwardly in accordance with its stroke. At the same time the transverse pitman 23 is actuated through the bell-crank connection 25 by the supplemental pitman 28 to swing the box either to one side or the other in accordance with the movement of the said parts, and it will be seen that as the motion increases the said pan-box is not only actuated in the two directions, but that by the rapidity of said movement, together with the swaying of the pan-box incident to the loose connection through the medium of the roller 16 on the rods 17, the said pan-box will have a circular motion and the dirt containing the gold will be rotated in the several pans. The inclination toward the rear of each of said pans produces an action simulating the movement of a common pan in placer mining, and the step-by-step operation on the dirt carrying the gold through the series of pans in the pan-box causes a true and posi-- tive separation of the gold from the dirt, and the tailings that will be delivered from the lower end of the pan-box will have been entirely relieved of gold before issuing-from said box.

The capacity of the machine may be varied, and other metals may be treated in a similar manner if they admit of such operation.

It is obviously apparent that many minor changes in the details of construction and arrangement of the several parts might be made and substituted for those shown and described without in the least departing from the nature or spirit of the invention.

Having thus described the invention, what is claimed as new is- 1. In a machine of the character set forth, the combination of a supporting-frame, an inclined pan-box suspended in said frame on centrally arranged longitudinal rods, and comprising a series of stepped pans, an angleplate attached to the bottom of the pan-box, a crank-shaft at one end of the frame, a longitudinally disposed pitman, a transverse pitman attached to the other arm of said angle-plate, a bell-crank lever at one side of the machine having one arm connected with said transverse pitman, its other arm being connected with the crank-shaft at the end of the frame,whereby said pan is given a rotary swinging motion, substantially as described.

2. In a machine of the character set forth, the combination with the supporting-frame, of a pan-box mounted in said frame and having, a series of stepped pans therein, loopshaped straps secured to the ends of said panbox and carrying centrally-located grooved rollers, centrally-arranged longitudinal rods in the upper portion of the frame and on which said rollers move, said rods being arranged in different horizontal planes for giving the desired angle of inclination to the pan-box, a crank-shaft at one end of the frame, an angle-plate secured to the bottom of the pan-box, and connections between said angle-plate and crank-shaft for giving both a longitudinal and a lateral swinging movement to the pan-box, substantially as described.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

WILLIAM A. DARLING.

Witnesses:

S. P. SHUTT,. H. B. HENDRICKS.

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