US970283A - Concentrating-table. - Google Patents

Description

A. R. WILFLEY.

GONGENTRATING TABLE.

APPLICATION mum MAY 15, 1903.

7 970,283. Patented Sept. 13,1910.

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'A. R. WILELEY. OONGENTRATING TABLE. APPLICATION IILBD MAY 15, 1903.

Patented Sept. 13,1910.

3 SHEETS-SHEET 2.

.1. 5; M i g A. R. WILPLEY.

GONGENTRATING TABLE.

APPLIUATION IILBD MAY 15, 1803.

Patented Sept 13,1910.

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An'rmm E. WILFLEY, or nEnvEa, COLORADO, assirnoa TO THE MINE Aim smEL'rEn H SUHLY comramr; or pan-van, conoaano, a coaroaa'rron'.

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Specification of Letters ratent.

Patented Sept. 13, 1910.

Application filed may 15, 1908. serial H0. 157,287.

useful Improvement in Concentrating-Tables, of which the following is a specifica- 7 tion.

My invention relates to an improvement in concentrating tables, and it is of the gen-v eral type commonly known as a vanner,

in which the concentration takes place on a moving belt or surface; and the primary object of my present invention is to treat tailings from tables of the class known as the iWilfley or tables which move the pulp along their surface by inertia. rWith this class of table the material of greatest specific gravity, and also material moved the most'rapidly bytheir own inertia are given the advantage. This results in catching practically all of the coarse mineral, most of the fine, and some coarsegangue, that is to say, the gangue which it does catch is all coarse because it travels the fastest by inertia. A certain amount of very fine mineral having specific gravity to settle, but not the shape or size to move forward is finally disturbed and lost in the tailings. Now, the present type of belt machine works in the opposite direction, and fine material having a specific gravity to settle, but not the sha e or size to progress by inertia, will sett e upon the surface of the canvas or other material, while the larger, lighter particles will be progressed over it. With the Wilfley type of table to prevent such grains from. accumulating on the table, the table must be runwith a strong motion to susend them so that the table will not become oaded with such minerals, but with the present belt machine, I propose to run it at just such speed as will allow such a par ticles of fine gangue which will not move 'by inertia.

In addition to the foregoing, my invention contemplates a moving, surface with a secondary movement whose tendency is to secured thereto.-

belts 6, 6, are carried over these sprocket progress the material being treated in another direction. Y

M invention further consists in certain nove features of construction and combinations of parts which will be hereinafter described and pointed out in the claim."

In the accompanying drawings, Figure 1 is a plan view, Fig. 2 is a view in side elevation, Fig. 3 is a transverse vertical section, and Figs. 4 and 5 are detail views of the troughs.

In the particular exemplification of my invention illustrated, A represents the base or framework of the concentrator, and B, is

the table frame, preferably supported on the base by means of rockers L, L, beneath which latter are set screws 2, 2 adapted to raise 'or lower the rockers, to tilt or level the table. This table frame in actual construction is intended to be about seven feet wide by twelve feet in length, and is built up of suitable stringers and cross ties, on top of which is screwed a deck of narrow boards to afford a smooth surface. Shafts 4, 4, are journaled in the opposite ends of the table frame and sprocket wheels 5, 5 are Sprocket chains or link wheels and these chains carry a series of troughs 7, 7 which are disposed side by side and'transversely of the table and which, together with the chains, constitute an endless belt, which moves slowly over the deck carried by the sprocket wheels at each end. These troughs are preferably about ten inches wide and seven feet in length and are each made of two strips of wood a, a, say an inch by an inch and a half in cross section and seven feet in length, with slats of wood I), b, a quarter of an inch thick by three inches wide and ten inches long, nailed across them, and the bottom of each trough is lined preferably with canvas 0. The moving belt thus constructed and constituted rests upon this deck or surface and is dragged along on it without any rollers at the ends, the sprocket wheels performing The underside the function of the rollers. of the belt is supported on two stringers which are fastened to the shaking table frame so that even this portion is not supported on rollers and the entire beltis carried by the chains. In the construction shown a differential toggle movement is set a box 21 for wash water.-

ing closed at this side of the tab e, the

- stroke is first quick and then retarded thus aiding this outward progressive movement of the material... I

On one end of the main drive shaft 10,

the worm 11 is located, which worm en ages a worm gear 12 on the counter sha I 13 whichextends at right angles to the main drive shaft 10, and p'aral el with the belt shafts on the table or shaking frame. This counter shaft 13 and one of the shafts which carries the belt are. connected bi a chain belt 15, which extends over sproc .16 and 17, keyed to'the counter shaft and belt shaft, respectively, which im arts slow and constant movement to the mam belt, the chain drive allowing the table a reciprocating motion while the counter shaft remains stationary.

Returning to the troughs, it may be added that they are set practically level, or with sli ht inclination toward the open end. The

up is fed along) the side for about half the length of the ta le in the pulp box 20, the balance of the distance bei supplied with he trou hs bewater necessarily flows toward the other side and hence the progression of movement being in the same direction, the gangue is carried that way. Thus it will be seen that large pieces of Igangue, as large as ones fist of the trough toward the ct wheels ling witnesses.

amass mi ht be. progressed over the side of the tab e, while extremely fine particles of mineral would be carried along by the moving surface of canvas or what not. And this is in contradistinction to other machines in which the gangue is removed by a current of water or b some mechanical device for scraping it o of the top, whereas in my invention the gangue is progressed, by 1ts inertia over the top so that a very slight current to the water is necessary.

As a simple "means for insuring the removal of the concentrates from the troughs, a concentrate box 25 is located beneath the discharge end of the table and a spray pipe 26 .just above this box discharges water into the inverted troughs as they pass aboveit,

thus washing out all of the mineral, which grops into and is caught by the concentrate Having fully described my invention what I claim as new and desire to secure by Letters Patent, is

In combination, a slimes concentrating belt composed of transversely disposed trough sections open at one end, means formoving the belt in the direction of its length, means for imparting reciprocation to the belt initially slow and increasing to fast in the direction toward the open ends of the troughs, and initially fast and decreasing to slow in the reverse direction, means for feeding slimes to the heads of the troughs, and means for feeding dressing water to said troughs.

In testimony whereof, I have signed this specification in the presence of two subscrib- ARTHUR R. WILFLE'Y.

Witnesses: p

E. B. BADGER, M. A. Dmsmonn.

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