US1218170A - Ore-separator. - Google Patents

Description

W. P. CLIFFORD J. C. COOK.

ORE SEPARATOR.

APPLICATION FILED NOV. 5. 1915.

Patented Mar. 6, 1917.

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1 ORE'SIEPARATOR.

APPLICATIONVFILED NOV. 5. 1915. 1,218,170.

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WILLIAM F. cmrroan, or OTTUMWA, AND JOHN G. COOK, or a ssnLL, IOWA.

ORE-SEPARATOR.

Specification of Letters Patent.

Patented Mar. 6, 191 '7.

To all whom it may concern.

Be it known that we, WILLIAM P. CLIF- FORD and JOHN C. COOK, citizens of the United States, residing at Ottumwa, county of Wapello, and Russell, county of Lucas, respectively, and State of Iowa, have invented new and useful Improvements in Ore-Separators, of which the following is a specification.

This invention relates to ore separatorsof the wet type in which water is used to wash minerals and ore over vibratory tables, and it has for its aim to provide an improved mounting for the tables.

Further, this invention resides in the means for vibrating the tables and the means for governing and determining the length of the vibration.

The invention still further resides in the features of construction, arrangements and combinations of parts hereinafter described and claimed, reference being had to the accompanying drawings wherein Figure 1 is a side elevation of a separator constructed in accordance with the present invention; Fig. 2 is a detailed elevation of the vibrator and the means for varying the vibration;

Fig. 3 is a plan view of the upper table; Fig. 4 is a vertical section of the machine taken about on line 4.4 of Fig. 1;

Fig. 5 is a plan view of the lower table; Fig. 6 is a longitudinal section of the up per table showing the adjustment thereof for collecting the finer particles of the ore and gold; and Fig. 7 is a detail sectional view illustrating the cup-shaped dents in the upper table.

Referring more particularly to the drawings and using similar characters of reference for corresponding parts throughout the several views, the numeral 1 designates the hopper or receptacle into which the raw ore is deposited and from which it is removed by feed elevator 2 for delivery to the chute 3. This chute is disposed inclinedly above the upper table 4 onto which it directs the ore.

From the upper table, the ore is washed and shaken down onto the lower table 5, the tailings being deposited therefrom to be delivered to the second elevator 6 into a second chute 7 from which the material may be removed, as is obvious.

Numeral 8. designates. the water tank superposed on the frame structure 9, and 10 denotes a manifold connected to the tank and carrying a plurality of jets or outlets 10 arranged above chute 3 for discharging water on the ore as it slides off onto table 1.

The lower end of table 4 is hingedly connected to the upper end of table 5, as at 11, the opposite ends of the tables being braced apart by the adjustable two-part strut 12 whereby the'tables may be adjusted independently of each other.

A rectangular or box-like frame 13 is suspended by rods 14 from a cross bar 15 of the frame structure 9, the rods 14 being adjustably secured to the cross bar by nuts 16.

Depending from the frame structure are the supports 17 each slotted at its lower terminal to be adjustably and slidably secured to one of the tables for serving as vertical guides for the latter and limit the lowering movement thereof, one slotted support being fastened to the lower end of the lower table and the other slotted support being secured to the opposite end of the upper table. Thus, the tables may be raised or lowered by the slotted connections.

J ournaled in suitable hearings on the frame structure is a shaft 18 on which is fixed a pair of vibrators or knockers 19 comprising radial blades or lugs adapted to strike against the suspended frame 13 for vibrating or reciprocating the latter and, consequently, shaking the tables.

The movement of the frame 13 is cushioned by a spring 20 interposed between one end of the latter and an upright of the frame structure for holding the frame 13 against the vibrators. The tension of the spring is variable by a nut and screw arrangement 21 for controlling the action of the frame.

.A screw 22 is swiveled on the supporting structure 9 at the opposite end of frame 13, the protruding end of the screw freely entering the latter. By thus rotating the screw 22, the box-like frame will move toward or from the vibrators whereby the effectiveness of the latter will be increased or decreased.

The upper table 4 comprises a series of steps 24 formed of copper and a section of coarse screen or other foraminous material 25 through which the ore sifts to the lower table. The lower steps 24 adjacent the screen section are formed with a plurality of cup-shaped dents 26 which are filled with mercury for collecting the very fine gold.

The lower table has a series of copper steps 27 and a series of screen sections, the section 28 being of finer mesh than section 29. Through the coarser section 29 fall the tailings and all waste.

As shown in Fig. (3 the tables may be adjusted to be almost horizontally disposed. whereby the steps will rearwardly incline and form compartments back into which the water will wash the finer particles of ore and gold.

A suitably mounteddrive 30 operates the shaft 18 by the chain 31 and the elevators by belts 32 and 33.

In practical operation, the ore is delivered from the hopper 1 to theupper table beneath the jets of water which are constantly being discharged onto the table. T he tables being angularly related and adjusted vertically to the desired height, are shaken by the vibrators or cam wheels 19 knocking against the suspended frame, which latter supports the tables. The ore will gravitate down the inclined tables and the waste will be discharged through the screens of the second table 5 for deliverance by the elevator 6 and chute 7.

From the foregoing detailed description, the operation will clearly be understood, and it is intended to modify the construction as permissible by the appended claims. By omitting the supply of water, and changing the screens, the separator may be used to sift and clear grain.

hat is claimed is:

1. In an ore separator, a supporting structure, a table adjustable thereon and provided with a series of steps, each of which steps has a substantially vertical forward wall, relative to the direction of travel of the ore, and a comparatively long uninterrupted rear wall, cushioned vibratory means for the table adjustable to vary the vibration of the table relative to the degree of adjustment of the latter, and means for adjusting the table whereby the comparatively long rear walls of the steps may be moved to assume either an upward slope or a substantially horizontal position, part of the steps having cupshaped mercury-holding recesses in their long walls.

2. In an ore separator, an adjustably mounted ore table having step-like compartments and adjustable to vary the capacities of the latter, part of the compartments having cup-shaped mercury-holding recesses, and means for vibrating the table, said means being adjustable for varying the vibratory movement of the table in proportion to the capacity of the adjusted compartments.

3. In an ore separator, a supporting structure, having spaced upright members, a rectangular frame adjustably suspended from the structure between the upright members, a pair of converging ore tables hingedly connected at one end and adjustable on the frame, a vibratory means on the structure between the frame and one of the upright members for engaging with the frame intermediately of the spaced apart ends of the ore tables for vibrating the frame and tables, a regulating device carried on the specified upright member and adjustably engaging the adjacent end -of the frame intermediately of the spaced apart ends ofthe tables to move the frame toward and from the vibrator means, and a cushioning member carried by the other of said upright members and engaging with the opposite end of the frame.

- 4. In an ore separator, an adj ustably mounted ore table having step-like compartments and being adjustable to vary the capacities of the latter, part of the compartments having cup-shaped mercury-holding recesses, and means for vibrating the table.

In testimony whereof we afiiX our signatures.

WILLIAM P. CLIFFORD. JOHN C. COOK. lVitnesses:

N. E. CARPENTER, D. H. BAUM.

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

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