US170642A - Improvement in ore-concentrators - Google Patents

Description

J. V. POMEROY. V oRE-CONCENTRATOR.

NQ,17o,e4z, Patented Nov. 30,1875.

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WITNESSES:

momma NA PETERS, PHOTLlTl-IDGRAPMER, WASHINGTON. D C.

UNITED STATES PATENT OFFICE JAMES v. POMEROY, OE BOULDER, COLORADO TERRITORY.

IMPROVEMENT INv ORE-CQN'CENTRATORS.

Specication forming part of Letters Patent No. l 70,642, dated November 30, 1875; application filed August 21, 1575.

To all whom it may concern:

Be it known that I, JAMES V. POMEROY, of Boulder, in the county of Boulder and Territory of Colorado, have invented a new and Improved Ore-Goncentr'ator, of which the following is a specification:

In the accompanying drawing, Figure 1 represents a vertical longitudinal section of my improved ore-eoncentrator on the line c c, Fig. 2; and Fig. 2, a top view of the same.

Similar letters of reference indicate corresponding parts.

My invention relates to improvements in the Ore-concentrator which has been patented to me under date of Mayll, 1875, and numbered 163,104, so that the operation of the same is more eil'ective, and the same can be worked with or without the concentrating-pans.

The invention will first be described in connection with drawing, and then pointed out in claims.

A in the drawing represents the supporting-table, which is constructed with a'stepshaped bottom, that forms a series of levels for the concentrating-pans B, the steps and head-walls producing a wave action of the water in each level or pan. The table A is supported on oscillating standards C, which are pivoted to adjustable slide-boxes C at the lower part of the table-supporting frame, so that the center of gravity of the table'may be changed, and a heavier or lighter shock be imparted to the same, according to the quality ofthe material.

Reciprocating motion is imparted to the table by means of a 'revolving eccentric and adjustable cam-pieces of the table, which mechanism is so arranged that the motion and shock imparted to the table is quick and sudden when moving toward Ithe feed end, and slower and less violent at the discharge end.

This variable motion and shock of the table produces vibrations and waves, which convey and discharge the light material, and precipitate the heavy parts.

The table A may be used'with or without the pans, the steps serving as pans, and creating the waves at each stroke of the reciprocating mechanism.

The pans B are placed on the levels of the table, with the bottom of one lapping or ex- A level of greater length is arranged at thel head of the table, and on the same placed an endlessbelt or canvas, D, onto which the pulp is fed through gate of hopper E, that is hinged at the head of the table, and seated .water-tight on the belt D by suitable springclamps, so that it forms in this position a wall for producing a wave over the belt.

lWhen the belt is charged with mineral, the hopper vis raised for an instant, and the canvas moved forward to discharge. its load, forming a new surface for the mineral to settle thereon.

I do not confine myself to any special con. struction of cams and levers by which the reciprocating motion is imparted; but l deem it a point of main importance for producing satisfactory results of concentration that the shocks at each end should be variable, and4 regulated at the head or feed end of the ma chine exactly in accordance with the gravity of the ore, and at the discharge end with the gravity of the rock, so as to hold the one and discharge the other. The mineral is thereby regulated and controlled on the levels and in the pans, and separated in a very satisfactory and rapid manner from the lighter materials. As the table A is vibrated or reciprocated to and fro, the ore is caused to drop between the hopper and gate, that are separated by suitable spacing-blocks, whilel the hopper, be-

ing pivoted, rises and falls, so as to allow the ore to escape readily.

Having thus described my invention, I claim as new and desire to secure by Letters Patentv 1. In reciprocating ore coucentrators, a step-shaped table, having a series of levels at different elevations, as and for the purpose described.

' 2. The combination in an ore-concentrator, with a series of levels at different elevations, of a head-level, made longer than the others, and provided .with an endless belt, as and for the purpose set forth.

' 3. The combination of the pans, side bolts,

table. toadjust." the"` pans.` "`t0 any inclination lied.

endf `nuts wichthe` slotted side Walls of zthe and having gam-as and for thepurpose.sneezi-` substnntially as set forth. i 4. The standards pivoted to slide-boxes, as JAMES V POMEBOY and for the purpose specified. Witnesses: 5. The combination, `with colleentrafixigtan-` T. J. GRAHAM, ble and endless belt, of the hopper, pivoted E.`L. HUBBARD.

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