US58539A - Improvement in quartz-crushers - Google Patents

Description

UNITED STATES PATENT Ormea I. S. CROLL, OF NORTH' SAN JUAN, ASSIGNOR TO HIMSELF AND QHARTUS RICE, OF NEVADA, CALIFORNIA.

IMPROVEMENT IN QUARTZ-CRUSHERS.

Specification forming part of Letters Patent No. 58,539, dated October 2, 1866.

To all whom it may concern:

Be it known that I, Isaac SHELBY GRoLL, of North San Juan, county of Nevada, State of California, have invented certain new and useful Improvements in Grinders and Amalgamators for reducing ores containing the precious metals; and I do hereby declare the following description and accompanying drawings are suftieient to enable any person skilled in the art or science to which it most nearly appertains to make and use my said invention or improvements without further invention or experiment.

The nature of my .invention consists in aseries of rotating mullers for reducing ores, re Volving around a common axis upon a ilat surface, each muller revolving on its own axis.

Referring to the drawings, which represent a sectional elevation cut through 'the center of the pan, A A is an upright shaft, with part removed at J J, passing up through the center of a cone, C, in the center of the pan i. The pan t' is constructed of iron or other material, of suitable size, with a hollow cone, C. extending up from its center. A horizontal stationary wheel, D, with teeth, is iixed rigidly to this cone about midway above the bottom of the pan, resting in a sleeve. Upon the top of the cone I place a plate, a, confined to the timbers of a frame, b b, revolving with it, by bolts passing through itand the circular ring or plate c and the timbers. Below this circular ringl is another ring, e, of the same dimensions as c', both resting against shoulders on the muller spindles or shafts ffj', and are held iirmly together by bolts and nuts, said bolts passing through them and standards j" f, the whole forming a stout circular frame.

The circular lnullers or shoes H H H are four in number, more or less, or such a number as the sizeof the pan will admit of, of smooth or corrugated surface, and are attached to the base of the spindles fj' by pins hh.. About midway upon these spindles I place spur-wheels G G G, which gear into the wheel D.

Motion is imparted by the pulley M, com- Y inunicating with the beveled gears L L, which carries the frame around, causing the mullers to rotate around the cone or common center of the pan and on their own axes by the spurs G Gr and stationary gear-wheel D in the valley or roadway on the bottom of said pan, imparting to them a compound or double motion, thereby performing a much greater percentage of grinding and amalgamating with much less power than other machines now in use for the same purpose as where the mullers are connected directly to a common rotating central axis. Also, in operating my machine the pulp is thrown to the center around the cone instead of being carried by force or power in a current around the whole interior of the pan, as in other machines, which must neces* sarily require more or less power to accomplish.

I claim- Giving the mullers a positive motion on their own axes by means of the gears D and Gr Gr, or their equivalents, while said mullers are driven around in the pan by the rotation of the frame which carries the shafts of the mullers.

Y I. S. GROLL. [1.. s]

Witnesses:

C. W. M. SMITH, Jos. MosHEIMER.

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