US1014871A - Agitating and grinding mechanism. - Google Patents

Description

E. B. GOODWIN. AGITATING AND GRINDING MECHANISM.

APPLICATION I'ILEI) JAN. 19, 1910.

Patented Jan. 16, 1912.

3 SHEETS-SHEET 1.

E. B. GOODWIN. AGITATING AND GRINDING. MECHANISM.

APPLICATION FILED JAN.19,-1910.

1,014,871 Patented Jan. 16,1912.

3 BHEETSr-SHEET 2.

E. B. GOODWIN. AGITATING AND GRINDING MECHANISM. APPLICATION FILED JAN.19, 1910.

3 SHEETSSHEET 3.

Q Q g (b auvmm QMM 4 N cuLummA I'LANUGIZAPH CO.,WI\SHINGTON. D. c.

Patented Jan. 16, 1912 EDWIN B. GOODWIN, OF PUZZLER, COLORADO.

AGITATING AND GRINDING MECHANISM.

Specification of Letters Patent.

Patented Jan. 16, 1912.

Application filed January 19, 1910. Serial No. 538,879.

To all whom it may concern:

to provide improved mechanism of the class ordinarily and technically known as ar-. rastres, and embodying new and improved features for thoroughly and completely; grinding and disintegrating the ore masses for agitating ore pulp and for aiding in the;

process of amalgamation.

gards the power required but which shall, at the same time, be efiective and eflicient as regards the amount of grinding surface operated and the amount of ores subjected to atmospheric action.

A further object of the invention is to provide an arrastre with an inclined floor with drag stones drawn over such inclined floor and thoroughly agitating the same, thereby rendering said particles amenable to amalgamation with mercury and aiding in such amalgamation.

The present invention is presented as a continuance of co-pending application Serial Number 457,666, filed October 14, 1908, so

far as the arrastre is disclosed in said c0- pending application, and also a continuance of co-pending application, Serial Number 492,680, filed April 28, 1909, so far as such arrastre is disclosed in said co-pending application, but with description of construction, operation and uses given more fully than in said co-pending applications.

With these and other objects in view, the invention comprises certain novel constructions, combinations and arrangements of parts as will be hereinafter fully described and claimed.

In the drawings :Figure 1 is a top plan View of the improved agitating and grinding mechanism. Fig. 2 is a diametrical sectional view of the improved agitating and grinding mechanism taken on line 22 of Fig. 1. Fig. 3 is a view in side elevation with part of the rim and screen broken away and showing a slightly different embodiment of theoperating features. Fig. 4 is a view in transverse section as on line 44 of Figs. 1 and 2 showing the means for connecting the drag stones with the radial arms and permitting the adjustment of such stones.

embodiment of the machine the floor of which is an inclined plane.

Like characters of reference designate corresponding parts throughout the several vlews.

The base 10 is composed of an approved material and preferably formed upon its upper surfaceintegrally to produce a floor 11 having its peripheral edges sharply upturned as at 12 and sloping from such peripheral upturned edge downwardly toward the center with an upstanding cone at the center preferably higher than the upper edge of the upturned portion 12, or said floor may be constructed with a continuous slant from one side to the other as shown at Fig. 5, the upturn at the edge having its upper rim level all around but its depth increasing with the slant of the floor from one side to the other as shown by the dotted lines. Axially of the cone 13 a shaft 14 is mounted serving as the axis for a plurality of radial arms 15 pivotally mounted upon such shaft 14: by any suitable means such as central disks or plate-like portions 16 and connected at their extremities with a circular rack 17.

About and above the upturned portion 12 of the floor a circular track 18 is constructed supported above the same in any approved manner as by the posts 19 and the space between such track 18 and the upper edge of the upturned periphery 12 filled by a screen 20 for the whole circumference or for any desired portion thereof. The radial arms 15 5 Fig. 5 is a transverse sectional view of an i A further object of the invention is to provide a mechanism of the class described, the operation of which shall be economical as re are provided with rollers or idlers 21 mounted adjacent the rack 17 andbearing upon the track 18. To rotate the radial arms and rack a gear 22 is intergeared with such rack and carried upon a shaft 23 which, in turn, is driven by any approved means as the pulley 241: for transmitting power to such pinion 22 and rack 17.

Upon the floor 11 a plurality of drag stones 25 are disposed to which are connected chains 26, the opposite ends of which are connected with the radial arms 15 in any approved manner as by cllps 27 shown particularly at Fig. having loops 28 for en-' gagement with such chains, and a bolt 29 for tightening such clips upon the arm 15. It will be apparent that by loosening the screw bolt 29 the clips 27 may be adjusted longitudinally of the arms to vary the path of travel of the drag stones 25 and consequently prevent uneven wear upon the floor .11; Another object of changing the position of the drag stones is that their order may be changed so that the contained material will be thrown toward the center or toward the circumference as desired. It will readily be seen that with the stones placed in the relative positions as shown in Fig. 1,

with the rotation of the radial arms in the direction as there indicated, they form a 'spiral'running from periphery to center as It will also be readily seen that by reversing therelative position of the stones a spiral would be formed run-E the arms rotate.

ning from center to periphery as the arms rotate.

lar ore mass to be treated or process being used at the tlme, or the stones could be arranged irregularly, for example so that the tendencyof one to throw the material toward the center would be offset by that ofanother to throw it toward the periphery,

etc.

As shown at Figs. 1. and 2 the idlers 21- forsupporting the rack 17 are carried and moved with such rack. At Fig. 3 the idlers 22 are shown as journaled upon the upper edge of the .upturned portion 12 of the floor and the rack 17 moves independently of. such idlers but is carried upon the periphery thereof; in other words-the'axes of such ldlers remain stationary lnstead of movlng "with the rotating parts as shown at Figs.

1- and 2. In either embodiment an upstanding flange 30 is formed about the upturned portion 12 of the floor forming outside of the screen, a circular or annular trough which receives material thrown through the screen by the centrifugal action of the stones or which overflows through the screen by reason of the material upon the floor rising to a level above the edge of the upturned portion 12. y

In operation the ore ground'in the ordinary stamp mill or. otherwise and in solution preferably of a solvent is introduced upon the floor 11 of the arrastre and the drag stones moved over such floor by rotating the rack 17 and with it the radial arms 15. As the drag stones are moved over the floor through the pulp upon such floor the action between the stones and the floor is to grind the ore to a still finer consistency and also by reason of the consistency of the pulp and the slant of the floor to leave in the wake of each stone a portion of the floor covered only by an' infinitesimally thin layer of the pulp over which the stone has passed. The passage of the stone and the exposing of such infinitesimally thin layer of the ore suspended in solvent exposes to the action of the atmosphere the freshly exposed surfaces of the particles of the ore in conjunction with the solvents so that the freshly exposed ore is simultaneously acted upon by the air and the solvent.

This apparatus is especially designed for carrying into effect the process disclosed in co-pending application, Serial Number 457,667, filed October 1 1, 1908, but is equally efficient when used for the purpose of amalgamation either with or without said process. WVhen used for amalgamation purposes the desired quantity of mercury is placed in the arrastre and tends to flow toward the lowest part by reason of the slope of the floor. The action of the revolving drag stones, however keeps it spread out over the floor and thoroughly mingled with the pulp so that its action upon the free metal liberated by the grinding is very complete and efficient. Moreover the action of the drag stones polishes all rusty or coated particles of metal and thus renders them amenable to amalgamation.

The most complete exposure to the atmosphere is obtained by placing upon the floor .at one time only sufficient of the pulp to cover the lower half of the floor when at rest so that as the stones revolve a portion of the pulp will be washed up onto the otherwise bare portion of the floor, and, flowing back toward .the lower part the pulp will spread itself into a thin layer and thus exposure to atmosphere will be accomplished in addition to that hereinabove described.

In operating the mbodiment of the in- *vehtion as shown at ig. 5 it is intended to fill material on to the floor so that the upper edge of the sloping floor is not covered by the material and receives material only as it is dragged by the drag stones up on to such portion. In this way a very thin film of the material is dragged by the stones onto the uncovered portion of the stone and is there subjected to the action of the atmosphere ih combination with solvent to carry out the process disclosed in co-pending ap plication Number 457,667.

WVhat I claim is 1. In a mechanism of the class described, a floor constructed as an inclined plane, means moved from the center of the floor for dragging weights over such floor and means to care for the overflow from such floor.

2. In a mechanism of the class described,

a floor constructed as an inclined plane,

drag stones disposed upon the floor and means centrally of the floor for moving the drag stones.

3. In a mechanism of the class described,

a floor constructed as an inclined plane and operating means mounted centrally of the floor.

4. In a device of the class described, a floor constructed as an inclined plane, drag stones mounted upon the floor and means to move the stones upon the plane.

5. In a mechanism of the class described, an inclined floor, drag stones disposed upon the floor, and means for moving the drag stones alternately between the higher and the lower levels of said floor.

In testimony whereof I aflix my signature in presence of two witnesses.

EDWIN B. GOODWIN.

Witnesses:

OARLE WHITEHEAD, ALBERT L. VoGL.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. G.

Images