US1067098A - Placer-mining machine. - Google Patents

Description

G. A. DBSMOND a; W. T. HENLEY.

PLACER MINING MACHINE.

APPLIOATION FILED MAY a, 1912.

Patented July 8, 1913.

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C. A. DESMOND & W. T. HENLEY.

PLACER MINING MACHINE.

. APPLIGATION FILED MAY 3,1912. 1,067,098, Patented July 8, 1913.

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CLINTON A. DESMOND AND WILLIAM T. I-IENLEY, OF WINNEMUCCA, NEVADA.

PLACER-MINING MACHINE.

Specification of Letters Patent.

Patented July 8, 1913.

Application filed May 3, 1912. Serial No. 694,825.

` companying drawing.

This invention relates to placer mining machines, and has for its object the production of an etlicient machine whereby the valuable metals may be etiiciently extacted from the gravel which is conveyed fro-m mining excavations in their nnseparated form.

Another object of this invention is the product-ion of an efficient arrangement of cylinders whereby Vthe gravel may be thoroughly cleansed by washing and the difterent metals readily extracted from the refuse or gravel.

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

In the drawings :--Figure 1'Y is a top plan view of the mining machine. Fig. 2 is a central longitudinal section thereof. Fig. 3 is a transverse section taken on line 3 3 of Fig. 1, looking in the direction of the arrow. Fig. t is an end elevation of the amalgainating cylinder. Fig. 5 is an end elevation of the primary sifting cylinder.

By carefully considering` Fig. 2, it will be seen that the primary separating cylinder 1 is supported upon an operating shaft E2 which shaft has its ends journaled in the transverse beams 3 of the vertical standards il. The cylinder 1 is preferably of a conical shape consisting of a plurality ot' longitudinally extending slats 5. which are spaced so as to allow the material directed into the cylinder to drop between the slats 5, after being thoroughly washed. The ends of the slats 5 are supported upon the wheels 6, which wheels are provided with spokes 7 for facilitating the entrance and discharge of the material to be cleaned into and from the primary cylinder 1. The shaft 2 is driven by means of a pulley 8, which is :in turn driven by means of a belt 9 traveling over a drive pulley 10. This pulley 10 is supported by mea-ns of a driving shaft 11,

and this shaft 11 is driven by means of the main drive pulley 12, which pulley 12 is in turn drive-n by means of the engine or other inode of propulsion through the medium of a belt 13. The main shaft 11 has its inner end journaled within a transverse brace 14- and the opposite end of the shaft continues through the cylinder 15. rThis cylinder or drinn 15 is held stationary between the frame 1G and the central braces ai.. The shaft 11 is journaled upon the journal 17, and carries at its outer end a pair of eccentrics 18, for the purpose hereinafter described. Agitating blades 19 are carried by the shaft 11, and are spaced at intervals throughout its length for agitating the material within the cylinder 15, and thereby causing the valuable particles of metal to settle upon the bottom of said cylinder 15. A shaking riii'le box 20 is supported at the rear end of the cylinder 15 and this rttle boX 2O is supported upon a framework 21. This agitating sifter 20 is carried by means of vertically extending rods 21. This ritlle box Q0 is connected to the arms or rods 21 through the medium of links 22 and in view of this fact, it will be seen that the ritlie box 520 may have a lateral oscillatory motion. The eccentrics 18 carry depending, oppositely extending arms 23 which aruis have their lower ends connected to the opposite sides of the ritlie box 20, and as the shaft 11 is rotated it will be seen that the ritlie box 2() may be readily actuated by means of the central driving shaft 11 in a direct, economical and positive manner.

An entra-nce chute 24 is carried near the upper end of the outer standard 4t, and upon this entrance chute 24 is dumped the gravel to be washed or cleaned from the conveyer 23, said conveyor 25 being made in any desired fashion to accomplish the purpose. The chute 2st directs the material (flischarged from the conveyor 25 into the separatii'lg cylinder 1, and as this cylinder 1 rotates the loose material or tine gravel will fall into the washing chute 2G. The larger material will pass out through the discharge end of the cylinder 1 into the main discharge chute 2T and from there be conveyed to any desired point. A water supply pipe 28 is connected to the upper end of the chute 2G and to this pipe Q8 is connected a main supply pipe 29. A branch supply pipe 8O is connected to the pipe 29, and this pipe enters the upper end of the cylinder 15 for discharging water into said cylinder. As the ine materials are discharged into the Washing chute 26 the Water discharged from the pipe 2S will thoroughly Wash the material, and the liquid and mixture of fine substance will be deposited in thercylinder 15 whereupon the entire mixture Will become agitated through the medium of the agitatingblades-l). A fresh .supply of Water through the pipe 30 Will be admitted into the cylinder l5 and the heavy metal will drop tov the bottom of the receptacle' l5, and may be cleaned from out of the receptacle through the clean-out opening 3l. The light metal such as'light particles of gold will pass out upon the overfimv Water through the discharge chute 32 and'be discharged upon the shaking rifle box .20, the liquid running out through the bottom of the sieve. In this manner it will be seen that all of the light particles of earth or gravel which may possiblyT contain any valuable metal will be thoroughly Washed so as to be separable from the valueless gravel, and in this manner vWill be thoroughly supported so as to be conveniently handled. vFurthermore it will be understood that owing to the thorough Washing of theV gravel, the same will be in good condition Without further `meshing the saine by-hand as the metal will be thoroughly cleansed through the automat-ic process above described.

Whatis claimed is A stationary cylinder, a rotary shaft extending through and beyond said cylinder and provided Within the cylinder with agitators, eccentrics on the` extended port-ion of the shaft, a riffle box, pitmen connecting the eccentrics With opposite sides of the riiie box and adapted to impart a lateral shake to said box, the cylinder being provided with an overflow opening delivering to the riliie box, and means for supplying said cylinder With ore and water.

In testimony whereof We hereunto aii'x our signatures in presence of tim-Witnesses.

.CLINTON A. DESMOND. lVILLI-AM T. HENLEY. llitnesses A. M. VILLIAMS, J; A. LIPMAN.

Copies of this patent maybe obtained for five cents each, -bytaddressng the Commissioner.of'atents, Washington, D. C.

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