US406635A

US406635A - Territory

Info

Publication number: US406635A
Authority: US
Publication date: 1889-07-09
Anticipated expiration: 1906-07-09

Description

(No Model.) l 3 Sheets-Sheet 1. G. O. DICKINSON.

GONGBNTRATING AND AMALGAMATING MACHINE) l No. 406,635. j 'Patented July 9, 1889.\

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-GONGENTRATING AND AMALGAMATING MACHINE.

No. 406,635. Patented July 9, 1889.

(No Model.) 3 sheetssheet 3.

G. o. DIOKINSON. GONGBNTBATING AND AM'ALGAMATING MAGHINB.

No. 466,635. Patented July 9*, 1889.

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UNITED l,STAT-Es PATENT OFFICE.

GEORGE O. DIcKINsON, OF sTOcKTON, UTAI-I TERRITORY]A CONCENTRATING AND AMALGAMATING MACHINE.

SPECIFICATION forming part of Letters Patent No. 406,635, dated July 9, 1889.

Application filed May 28,1887. Renewed May 28, 1889. Serial No. 312,354. (No model.)

provements in Concentrating and Amalgamating Machines, of which the following is a specification.

My invention relates to improvements in that class of machines employed for separating gold, silver, lead, and other metals from sand, eartlhand similar substances contain- .ing such metals, and also amalgamating the metals thusseparated.

My invention will be fully describedhereinafter, and its novel features carefully deiined in the claims. i l

In the drawings which serve to illustrate my invention, Figure l is a plan or top view of a machine embodying my improvements, and Fig. 2 is a sectional elevation of the same as seen from arrow a in Fig. 1. These views are on a small scale and show the entire machine. Fig. 3 is a side view, and Fig. 4 is a plan on a much larger scale than Figs. 1 and 2, showing only a part of the machinenamely, the pan, its spring, and its supports.

inner ends of the pans.

Figs. 5 and 6 are respectively a side view and a plan of one of the friction-rollers and its frame. Figs. 7 and 8 are respectively a fragmentary plan and a fragmentary sectional view of the mechanism for lifting the Fig. 9 is a sectional detail of the buifers and spring.

1 is the main frame, here shown as in the form of a cross in plan.

2 is the upright shaft arranged vertically in the center of the frame. This shaft is` tubular at its upper part, as best seen in Figs. 2 and 8.

3 is the supporting-table or spider mounted on shaft 2 and supported by stays 4 4. Y

5 is a horizontal ring-like bevel-wheel on the lower face of spider G is a pinion on the driving-shaft 7, said pinion meshing with wheel 5, and 8 are the pulleys on shaft 7 to receive the. driving-belt. (Not shown.)

9 9 are the concentrating and amalgamating` pans. These pans are of sector-like form, and when assembled serve to substantially complete the circle. Each pan is free to move within limits radially, or in and out toward or from the axis of the machine independently of the others.

The pan has a shoe j l0 on its under side near its inner end, and

this shoe plays in a slotted or grooved guide or keeper l1 on the spider 3. Atits outer wider end it has two similar shoes 10 which ride or play over bearing-rollers 12 in guides 13 on the spider. bearing-rollers are indicated in dotted lines in Figs. 3 and 4.

Referring especiallj7 to Fig. 9,14 is a buffer on the bottom of

pan

9, and 14 is a buiferon the spider 3.

15 is a spring bar or rod coupled at one end to shoe 10t This rod passes through vapertures or slits in the buffers, and has embracing it a spring 16, forming a retractor The positions of these for the pam, arranged between an adjustable spider.

On the outer face of each pan 91s a cam 18, which when the pans are carried around comes in contact, successively, with rollers 19, (seen detached in Figs. 5 and 6,) mounted adjustably in the frame 1, as seen in Fig. 2. These rollers, by their action on the inclined face of the cam, serve to press or push the pan in toward the axis of the machine. cams and roller form pushers, and when the cam passes the roller the spring 16-suddenly retracts the pan, or moves it outward again until the buffer on the pan strikes that on the spider. Thus when the p'ans are being rotated they have imparted to them a radial reciprocating movement, together with repeated jars or jolts as the buffers come together.

I will now describe the'mechanism, which I denominate a lifter, for simultaneously Thus the raising or lowering the inner ends of the IOO machine-frame. Thus rod 20 is prevented from rotating, while cross-piece 21 is carried around with shaft 2. The upper end of rod 2O has a screw-thread 20', on which screws a initer-wheel nut 25, which meshes with a miter-w-heel 25 on a shaft 26, rotatively mounted on frame 1 and provided with a crank 27. By means of this crank and the intermediate mechanism the cross-piece 21 may be raised and lowered at will. In Figs. 7 and 8 I have shown a notched wheel 28 on the shaft 26 and a pivoted dog 23 on the frame, whereby said shaft 26 may be locked against rotation; but this device is not absolutely es sential and is not shown in Figs. 1 and 2. Oil the shaft 2 is a sliding sleeve 29, the lower end of which rests on cross-piece 21, and this sleeve is furnished with arms 30, one for each pan. From the end of each arm 30 depends a pair of links or rods 31, the ends of which are coupled to the sides of two adjacent pans by a pin 32. There may be a number of pinholes in the sides of the pans, as shown, so that the coupling can be effected at different points. It will be obvious that when crank 27 is turned and cross-piece 21 is raised the inner ends of the pans will be raised correspondingly.

There are two pipes 33 33 to feed the pans with the ore or mineral, and two water-pipes 34 34 to feed water to the pans for washing, the said feed and water pipes being arranged in alternate order, as indicated in Fig. 1. Under the curved portions of the pipes, where they extend over two adjacent pans, are arranged A-shaped shields 35, which bridge the spaces between the pans and deflect into the pans the Water andV mineral that would otherwise fall between them. Each of these shields is attached to only one of the pans.

. Qn the inner end of each pan 9 is a tailing spout or chute 36, from which the tailings descend into the tailing-pan 37, which has an outlet-spout 37. On the shaft 2, at the mouth of the tailing-pan, is a deflectorSS to prevent the tailings from falling into the space around theshaft.

I will now describe the operation ofthe machine. Whenv the shaft 2 is set rotating ythrough the medium of the shaft 7 and gears .5 and 6, the pans 9 are carried around with it. The cams 1S on the pans act on rollers 19 on the frame to push the pans in toward the axis of the machine, and the springs 16 act to throw them out suddenly', the buffers stopping them quickly, so as to produce percussion and jar.

The wat-er and mineral are fed into the pans through pipes 33and 34, and thejarring motion in connection with the centrifugal force generated by rotation tends to draw or drive the heavier precious metal toward the outer ends ofthe pans, while the worthless material, in suspension, flows off at the tailing-chutes 36 at the inner ends of the pans. `The mechanism for manipulating' the inner ends `of the pans enables the same to be raised or lowered in order to properly regulate the discharge of the tailings. It will be observed that the inner en dof the pan maybe raised considerably and sufficiently without disengaging the shoe 10 from its keeper 11, which latter is quite deep. Then a suflicientquantity of the precious metal has accumulated at the outer ends of the pans, the machine may be stopped and the accumulation removed with shovels, &c. I/Vhen the precious metal is of such a character or in such a condition as to permit it, the inner ends of the pans can be raised and mercury poured into the ou ter ends of the pans to effect the amalgamation of the metal in the pans. The shaking and jarring motion of the pans will serve to bring the mercury into contact with all the particles 0f the metal to be amalgamated and willaccelerate materially the process of amalgamation.

In working some sands containing gold I have found it advantageous to cover the bottom of the pans with amalgamated copper plates and to place mercury on said plates, for the purpose above described.

The feed and water pipes 33 and 3l are mounted to slide in their bearings on the frame l, (see Fig. 2,) so that their delivery ends can be set in or out, and thus deliver at different points in the pans to adapt the machine for the treatment of different materials. The feed-pipes have their curved lower ends perforated to distribute the better in delivering. In some cases I find it desirable to dispense with the water-feed, and in this case I feed the material from a hopperinto the pans and use an air-blast to assist in separating the valuable from the waste material, the airblast being so placed as to produce the same effect as the water-feed.

The tension of springs 16 may be regulated by nuts on rods 15 back of collars 17 in awellknown way,l and the amount of throw of cams 18 may be regulated by means of nuts on the shanks of the frames which carry rollers 19. The construction of these roller-frames is Well illustrated in Figs. 2, 5, and 6.

I do not wish to limit myself to the particular construction of all the parts, as herein shown, as these may be changed somewhat without materially -departing from my invention-as, for instance, the cams 18 might be mounted on the frame and the anti-frictional rollers 19 on the pans. This would produce the same effect as the construction shown. On the other hand I do not wish to be understood as claiming, broadly, the use of cams, Springs, and buffers for reciprocating and Vj arring an amalgamating-pan, as such have before been used, but not in the manner employed by me. Concentrating-pans provided with vibrating mechanism have also been provided with means by which the end of the pan may be raised and lowered. My pans, however, are arranged around and carried by a vertical revolving shaft, and are provided IOO IIO

with a lifter that acts simultaneously on all of the pans, and is constructedin such a manner that the ends of all thepans may be raised or lowered to a like extent While the pans are being carried around. This is the limitn g characteristic of this part of my invention.

Having thus described my invention, I claim- 1. The combination,with a vertical shaft provided With a support for the pans, of the said pans having the form of sectors,whereby they form a circle When assembled, and each pan provided with sliding bearings on its support, and mechanism comprising a cam, a Vcamroller, buffers, and spring for imparting to each pan a radial sliding and jarring movement as it is carried around by the shaft.

2. The combinatiomwith avertical shaft 2, provided with a suitable support 3 for the pans, said support having buffers 14C', of the mechanism for vilnpartin g rotation to said shaft, the pans 9 9, each provided with shoes 10 10'., a buffer 14, a cam 18, a spring-rod 15,

V and a spring 16, and the rollers 19 on the machine-frame, arranged to strike said cams on the pans.

3. The combination, with the tubular slotrollers as the shaft revolves7 and the springs that return or retract the pans, substantially as and for the purposes set forth.

5. The combination,with the independentlymoving pans arranged around the shaft, of the said shaft, the feed-pipes arranged over the pans, and the deli'ecting-shields 35, ar-

ranged over the spaces between the pans under said feed-pipes, and means for operating said pans, substantially as set forth.

6. The combination, with the pans and hol- 10W shaft 2, of the mechanism for simultaney ously lifting the inner ends of said pans, consisting of the non-rotative lifting-rod 2O in said hollow shaft 2, cross-piece 21, rotatively mounted on the rod 20, sleeve 29 and its arms, couplinglinks 3l, nut 25, and mechanism for rotating said nut.

In witness whereof I have hereunto signed my name in the presence of two subscribing Witnesses.

GEORGE O. DICKINSON.

Witnesses: f

WILLIAM E. J AcoBs, PHiLIP BRIGes.