US815272A - Agitating device. - Google Patents

Description

v No. 815,272. I PATENTED MAR. 13, 1906.

W. B. DEVEREUX.

AGITATING DEVICE. APPLICATION FILED MAB.15. 1906.

2 SHEETS-SHEET 1.

WITNESSES-z 7 L n No. 815,272 PATENTED MAR. 1a, 1906.

W. B. DEVEREUX.

j .AGITATING DEVICE. A PPLIOAT ION FILED MABJB. 1905.

2 SHEETS-SHEET 2.

WITNESSES:

, K l-NVENTOR fi y To a it may concern: a Y

\ i No. 815,272.

"UNITED. STATES" PATENT, OFFICE. 4

,WALTER DEVEREUX, OF GLENWOOD SPRINGS, COLORADO.

" -AG'ITATING' DEVICE. J

it known that I, WALTER B. DEVEREUX,

,a citizen of the United States,and a resident of" Glenwood S rings, county of Garfield,

State of Colora 0, have invented a new and useful Improvement in Agitating Devices, of

I which the-following isa specification.

My invention relates to an improvement in agitatingdevices which are intended to keep hquids or liquids with solid particles in agit'ation in processes such as the cyanidation of gold and silver ores, leaching of ores, and other similar metallurgical processes; and the ob- I or li uids with solid ject of my invention is to a-iford a simple mechanical device requiring a small amount of power for its operation.

. In earlier Letters Patent I have described agitating devices which consist of a propeller ora propeller-pump or othermechanical equiva ent of the ordinary marine propeller rotating within a tank in which liquids articles as are to be a itate at such a deptli that the solid artic es after settling will not interfere with t e starting ofthe ropeller, in combination with av series of ra 'al diaphra ms placed vertically within the tank, refera ly as in such Letters Patentdescribe so constructed that the 1iuids or li uids with solid particles con tamed therein will pass freely through, around,'and under them, the purpose of which dialphragm is to prevent rotation of the mate- 1 similar to the single propeller de'scn ria in the tank being agitated without sub-v dividing the tank into separate or independ-; ent compartments and to cause the propeller,

in cjombmation with suchdialphragnii, to act a;

ution ownwar to employ larger tanks without unduly increasing the size of the pro ellers, which would necessarily result'from t e construction de scribed m the said Letters Patent, I have found that equally eflicient and satisfactory results can be produced and the construction still further-simplified by replacing the radial diaphra ms whlch are described in the said Letters atent by a plurality of 'ropellers e herein, but of relatively, smaller dimensions.

The invention willbebest understood by reference to the accompan 'ng two sheets of 4 drawings,- forming a parto this specification, inwhic Figure l is a vcrtical section of the appara- .sametime.

4 Patented March 13,19oe.

tus employed. Fig. 2 is a plan view of the tank.

Similar letters refer to similar parts throughi out both views.

. In both of the sheets of drawings, Arepresents the tank, which may be of any convenient shape.

B represents the inlet-pipe, which is ordinarily. a trough, as shown, or in case the tank is closed atthe top a pipe provided Withsuitable cut-off valve. This is placed in any convenient position with respect to the tank and through which the material to be agitated is inserted therein.

C. is a manhole in the bottom of the tank through which the final discharge of the tank takes place when the operation is terminated.

P, the upper end ofwhich is open and is supported by a'i float J while the liquidis being drawn off or decanted, which device is tech nically known as a Ffioating siphon, and the pipe P is attached to thefioat J by means of the coupling K shown in the views. Instead of connecting the pipe D with the floating siphon for the purpose of drawing off the liqul-d portions intermittently the 1pe D may be connected with one or more 'ng devlces' of suitable form, placed at oneor more convenient points within the tank. v

i E, E,jand E represent a seriesoi' vertical shafts extending down into the tank, asshown, each of which carries on its lower end a propeller F, F, and F of the ordinary form used in modern marine practice. Thesepro-' ellers are each turned in such a way as to 95 orce the material downward against the bottom of the tank. The shafts rotate 1n bearings G, attached to a beam T, which asses across the top of the tank. Each sha t car ries at itsupper extremity between'the bearings G G a pulley H. These pulleys are so connected by suitable belts or rope drivers that all three of the shafts will'.rotate at the Any number of shafts and pro-' pellers may be employed; but in practicetwo or three will be found most convenient. The method of driving the shafts and the "devices :for controllingtheir movements and reducing the friction thereof'form no part of the-invention, but may be varied f-rbm time to time acrod IIC

cordin to the purpose for which the device is emp oyed. In practice the size of the propeller will vary according to the size of the tank, and they may all rotatein the. same horizontal plane or in different-planes, as may be found most convenient.

The method of operation is asfollows: The material to be agitated is introduced into the tank and the propellers are set in motion; As the tank is not divided into separate compartments, the first effect of the revolution of the propellers is to draw the liquid from above 1 and force it down a ainst the bottom of the solid particles from the bottom of the tank and forms a homogeneous mixture of liquid and solid material through every part of the tank, which condition continues as long as the propellers are kept in operation. After \the material has been agitated a sufficient time the propellers are stopped, and the clear solution can then be drawn off from the top through'the floating siphon as soon as the solid materialhassettled sufliciently to leave a layer of clear liquid at the top.

- I claim as my mventiona 1. The combination in a metallur ical aparatus, of a tank and a plurality o ropelers arran ed 'to rotate on vertical siiafts a substantia distance above the bottom thereof and above the level to which the solid material of the charge will settle when the propellers are at rest.

2. The combination in a metallurgical a paratus, of a tank; means for decanting t 1e iquid contents thereof; and a plurality of propellers each arranged to rotate on a vertical shaft within the tank a substantial distance above the bottom thereof and above the level to which'the solidv material of the charge will settle when the propeller is at rest. In testimony that I claim the foregoing as myinvention I have signed my name, in presence of two witnesses, this 14th day of March,

- WALTER 'Bl DEVEREUX. Witnesses: FRANK LYMAN,

A. M. Gow.

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