US521663A

US521663A - Ore grinder and amalgamator

Info

Publication number: US521663A
Authority: US
Publication date: 1894-06-19
Anticipated expiration: 1911-06-19

Description

'(No Model.) 2 Sheets-Sheet 1.

o. N. MOORE.

ORB GRINDERAND AMALGAMATOR. No. 521,663. Patented June 19, 1894.

{No Model.)

, 2 Sheets-Sheet 2. O. N. MOORE.

ORB GRINDER AND AMALGAMATOR.

No. 521,663. Patented June 19, 1894.

we NATIONAL umoaRAFuma coMPANY,

WASMINGKON. a. c.

' ratus.

, drical extension A in the center.

NITED STATES PATENT OFFICE.

CHARLES N. MOORE, OF NEWHALL, CALIFORNIA.

' ORE GRINDER AND AMALGAMATOR.

SPECIFICATION forming part of Letters Patent No. 521,663, dated June 19, 1894.

Application filed October 30, 1893. Serial No. 489.524:- (No model.)

To aZZ whom it may concern.-

3e it known that 1, CHARLES N. MOORE, a citizen of the United States, residing at Newhall, I .os Angeles county,State of California, have invented an Improvement in Ore Grinders and Amalgamators; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to an apparatus for gr nding and amalgamating ores or rock contaming precious metals.

It consists in certain details of construction which will be more fully explained by referencetotheaccompanyingdrawings,inwhich- Figure l is a vertical section of my appa- Fig. 2 shows a driving mechanism.

A 1s a base of sufficient area fixed upon a suitable supportand having a vertical cylin- Around this vertical extension fits the bored out central portion of the pan B, the bottom of which declines from the center to the rim or periphery which stands at a slight outward angle as shown.

Upon the bottom of the pan B are placed dies 0 suitably constructed and fitted to cover the bottom of the pan, and receive the wear caused by the grinding. These dies are removable for the purpose of cleaning, or to replace when worn out. a

In the center of the standard A is fixed a stem or spindle E which projects vertically upward, and forms the shaft around which 1the central hub of the spur gear D is fitted to urn.

Upon the top of the hub, and forming a part of it, is the feeding hopper D, the center of which is in the form of a cone, declining outwardly to its junction with the bottom of the hopper sides. At this point openings to are made through which the ore may be delivered upon the surface of the dies 0 within the pan B. Around the periphery of the lower part of the span B openings are made which are covered with'wire screen cloth d, and exterior to the pan is fitted the circular copper amalgamated trough c which is adapted to receive the pulp as it is discharged through the screened, and within this trough any valuable metallic particles are amalgamated and saved. This annular trough has a discharge opening or chute upon one side for the escape of the lighter, worthless particles. In order to properly grind and pulverize the ore which falls into the pan from the hopper, I employ the rollers F which are in form of frustums of cones, the angle of the conical sides being such that when the side rests upon the dies 0 in the bottom of the pan, a shaft extending centrally through the conical rollers will be approximately horizontal. These shafts G have their inner and outer ends respectively journaled in boxes H which are let into the lower part of the hub, and of the periphery respectively, of the gear wheel D.

The pan B is caused to rotate in one direction, while the rollers F, traveling upon its bottom, are rotated with relation to the pan,

by means of the following mechanism: I I are horizontal shafts journaled upon suitable supports extending radially outward beneath the bottom of the pan B, and havins xed to them the beveled driving pinions K K. Upon these shafts are anti-friction rollers J, upon which a downwardlyprojecting flange from the bottom of the pan is adapted to travel. The beveled pinions K on the shafts I are adapted to mesh with corresponding teeth upon the bottom of the pan B exterior to the anti-friction supporting wheels J, so that by the rotation of the shafts I I the pan will be driven in one direction. As there are two of these shafts upon opposite sides of the pan,

it will be manifest that they must be driven in opposite directions. Power to drive these shafts I is derived from a driving countershaft L having upon it a sprocket-wheel M, and a chain N passes around this sprocketwheel, and acorresponding sprocket-wheel M which is fixed directly to the shaft I upon one side of the pan, while upon the opposite side, a corresponding chain passes around a sprocket-wheel, the shaft of which carries a spur gear, and this gear meshes with a corresponding gear upon the shaft I upon that side, so that by means of the intermediate gear, the motion of this shaft is reversed from that of the shaft upon the opposite side,both

shafts thus acting to drivethe pan in one di-. rection.

In order to rotate the gear-wheel D, and with it the conical crushing rollers F whose shafts are journaled in the gear-wheel, as before described, I have shown vertical shafts O journaledin boxes P having keyed upon the upper end, driving pinions Q, the teeth of which engage with the teeth of the gearD and rotate it oppositely to the pan B. These vertical shafts 0 have fixed upon them the beveled pinions R, and these pinions are ongaged by the bevel-wheels S which are fixed to the horizontal shafts I, so that when the horizontal shafts I are driven as previously desoribedflthey will transmit motion to the pan B, and through the bevel gears R and S,

and the shafts 0 to the pinions Q, and thence to the spur gear D which carries the grinding rollers F.

The whole mechanism is easily separated by lifting the spur gear I) with the hopper and grinding rollers from the pan, after which the pan may be lifted, the dies removed, cleaned and replaced, the trough c cleansed of amalgam, and the whole replaced again ready for work.

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

1. A grinding pan having the inclined bottom,a fixed central post with a standard about which the center of the pan is fitted to revolve, horizontal shafts extending outwardly from beneath the bottom of the pan, anti-friction rollers upon said shafts, and flanges upon the bottom of the pan adapted to travel upon said rollers, a toothed gear surrounding the bottom of the pan, pinions upon the horizontal shafts engaging said gear, and mechanism whereby the shafts are driven so as to transmit motion to the pan, together with grinding shoes or rollers movable over the bottom of the pan, the horizontal gear wheel above and of greater diameter than said pan and having bearings in which said shoes or rollers are mounted, and gearing connecting said horizontal shafts with said roller carrying gear wheel substantially as herein described.

2. A grinding pan having the inclined bottom, dies fixed therein, a central base and standard about which the center of the pan is fitted to rotate, radialshafts extending outwardly beneath the bottom of the pan, antit'riction rollers upon said shafts by which the pan is supported, a gear around the periphery of the bottom of the pan and pinions upon the shafts adapted to engage the gear, sprocket wheels fixed upon the shafts and receiving power by chains from other sprocket-wheels fixed upon a driving counter-shaft, conical rollers having horizontal shafts journaled in a gear-wheel turning loosely above the top of the pan and intermediate gears whereby motion is transmitted to drive said gear and the crushing rollers with relation to the pan, substantially as herein described.

3. A grinding pan having theinclined bottom and dies, radial shafts with supporting anti-friotion rollers upon which the pan rests, pinions upon the shafts and a gear upon the pan bottom through which motion is transmitted to rotate the pan, a central base and standard about which the center of the pan is fitted to rotate, a fixed spindle extending upwardly from the standard, a gear of larger diameter than that of the pan having a central hub fitted to rotate upon the spindle, conical rollers, the shafts of which are journaled in boxes in the hub and rim of the gear, so that the rollers travel upon the dies on the pan bottom, vertical shafts having spur pinions adapted to engage the gear, and bevel gears upon said shafts and upon the main driving shafts whereby motion is communicated to rotate the gear and the crushing rollers simultaneously with the movement of the pan, substantially as herein described.

4. A grinding pan having the conical bottom and die mechanism by which a rotary motion is imparted to the pan about a central base and standard, a vertical spindle extending upward from the standard, a spur gear of larger diameter than that of the pan, intermediate gears whereby motion is transmitted from the main driving shafts to rotate the pan and the gear, crushing rollers, the peripheries of which fit the bottom of the pan, and the shafts of which are journaled so as to be driven by the gear, a hopper extending upwardly from the hub of the gear having a conical bottom,anddischargeopeningsaround the periphery through which ore is delivered between the crushing rollers and the bottom of the pan, substantially as herein described.

5. A grinding pan having the inclined bottom and dies fitted thereon, conical rollers with horizontal shafts ahorizontal gear-wheel having the same axis of rotation as the pan, and journal-boxes in which the shafts of the grinding rollers are carried, a central conical hopper adapted to deliver ore around its pe' riphery between the grinding rollers and the bottom of the pan, horizontal radial shafts with pinions engaging a gear upon the bottom of the pan, and vertical shafts with gears engaging theperiphery of the gear which carries the crushing rollers, intermediate gears and pinions whereby the vertical shafts are driven and the pan and crushing rollers rotated simultaneously, openings with screens fitted around the bottom and outer periphery of the pan, and a surrounding amalgamated copper trough into which the pulp is discharged through the screens, substantially as herein described.

In witness whereof I have hereunto set my hand.

CHARLES N. MOORE. Witn esses:

J. F. POWELL, GEO. CAMPTON.