US927954A - Slime-breaking attachment for ore-dressing machines. - Google Patents

Description

J. O. DIMMIGK. SLIMB BREAKING ATTACHMENT FOR ORE DRESSING MACHINES. APPLICATION FILED SEPT.28, 1907. 927,954, Patented July 13, 1909.

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J. O. DIMMIUK. SLIME BREAKING ATTACHMENT FOR ORE DRESSING MAUHINES.

APPLICATION FILED SEPT. 28, 1907.

Patented July 13, 1909.

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UNITED STATES PATENT OFFICE.

JOSEPH O. DIMMIOK, OF LOS ANGELES, CALIFORNIA.

SLIME-BREAKING ATTACHMENT FOB ORE-DRESSING MACHINES.

To all whom it may concern:

Be it known that I, J OSEPH O. DIMMIoK, a citizen of the United States of America, residing at Los Angeles, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in Slime-Breaking Attachments for Ore-Dress ing Machines, of which the following a specification.

My invention relates to new and useful attachments for ore-dressing machines of the class in which the separation of the valuable particles from the extraneous matter in the to a pulp reduced ore, is effected by the agency of water or other fluid.

The object of my invention is to provide a device which when attached to a vanner, concentrating table, or analogous contrivance, will cause dissipation of the suspended or supernatant slimes and by consequent precipitation of the fine metallic particles contained therein, save a quantity of values which otherwise would have been carried off with the tailings and been lost. I attain. this object by the mechanism illustrated in the accompanying drawings in the various views of which like parts are similarly desig nated and in which Figure 1 represents a plan view of the device in operative position on a Frue vanner, Fig. 2 a section taken along a line 22, Fig. 1, Fig. 3 an enlarged, fragmentary view of one of the ends of the device in posi tion on the ore dressing machine, Fig. 1 an end view, looking in the direction of the ar row a, Fig. 3, Fig. 5 a section taken along a line 55, Fig. 3 and Fig. 6 a sectional view illustrating a modified manner of forming the teeth included in the attachment.

The device is represented in the drawings to be arranged above and transversely of the rubber belt of a Frue vanner, the reference character A indicating the shaking frame thereof, B the feed apron and G the rubber belt supported upon rollers E and provided with longitudinal, upwardly ranging flanges D.

The attachment consists of a comb-like member 5, the back 6 of which is formed of a plurality of parallel strips 7 provided with downwardly extending teeth 8 and connected by means of transversely disposed cleats 9.

The extreme ends of the strips 7 are connected by means of cleats 10 formed with up wardly extending, longitudinal, paral el flanges 11 which being provided with regis- Specification of Letters Patent.

Application filed September 28, 1907.

Patented July 13, 1909.

Serial No. 395,007.

tering apertures, afford double bearings for two pairs of parallel shafts or spindles 12 which, extending outwardly respectively from the opposite ends of the back 6, are held in position on the cleats 10 by means of collars 33.

The outer portions of the shafts project through. close fitting apertures in bearing plates 13, which are vertically adjustably connected to uprights 14, by means of bolts 15 which project through slots 16 in the latters upper extremities.

The standards or uprights 14 are arranged in pairs at opposite sides of the shaking frame A of the vanner and are longitudinally adjustably secured upon the outer surfaces of the longitudinal, parallel beams included therein, by means of bolts 17 which being fixed on the said beams, project through slots 18 in the lower extremities of the said uprights.

The position of the comb 5 in relation to the belt C is maintained during lateral displacement of the latter, through instrumentality of wheels 19, which being preferably composed of rubber, are rotatably mounted upon the shafts 12 in engagement with the outer surfaces of the longitudinal flanges D on the belt C, and are held against lateral displacement by means of collars 20.

The strips 7 which compose the back'6 of the comb 5 are preferably composed of some hard fibrous substance such as red wood and the connecting transverse cleats of sheet metal, while the downwardly extending pins may consist of fine nails made of even thick ness by means of a templet and driven into the wooden strips with their heads downward.

The pins or teeth 8 are arranged in longitudinal equidistant rows placed in consecutive order transversely of the back 6 and the pins in the various rows may be in transverse alinement with each other or in alternate order as illustrated in Fig. 3 of the drawmgs.

Instead of being made separately and of metal, the pins or teeth may be composed of rubber and formed integral with a sheet or pad 21 illustrated in Fig. 6 of the drawings, which is secured to the undersideof the back 5 by means of a suitable adhesive substance, nails or other fastening means.

The manufacture of the pad 21 may be facilitated by composing it of a plurality of sections which being placed transversely contiguity, provide collectively the longitudinal rows of teeth.

Although the device as illustrated in the drawings is especially ada ted to be used in cooperation with the trave ing belt of a vanner, I Wish it understood that the same may be employed with equal results in conjunction with a concentrating table or on amalganiating plates.

When the quantity of slimes formed during the operation of the ore dressing ma chine, is small, one of the attachments placed back of the feed apron is suflicient to disperse the slimes and release the values associated therewith; in many cases, however, when the percentage of slimes is large and the particles of mineral held therein are light, I have found it necessary to employ two or more of the combs arranged in sections, at certain intervals from the head of the machine to its discharge end.

The operation of the device is as follows: The slimes formed during the process of separating the valuable particles of mineral from the to a pulp reduced ore, gather on the surface of the water in which the pulp is submerged and form a supernatant coat of talcose scum which receives and retains a large percentage of the lighter particles of mineral contained in the ore, which were held in suspension in the fluid. If left undisturbed. these slimes will move to the foot end of the apron or table to run off together with the tailings, but when by contact wit-h the successively arranged rows of pins of my attachment, they are dispersed, the mineral particles contained therein are released to be subsequently precipitated by their specific gravity and the agitation of the water, to the surface of the belt or table where they are caught by the heavier particles already there and carried forward to be saved.

The quantity the slimes formed, varies in accordance with the nature of the ore which is being treated and if large, will cause the portions of the dissipated slimes to re unite together with the lighter mineral particles, after they have passed the teeth of the device. In such a case, it will be required to employ two or more sections, which being placed in consecutive order will by their reupon the back of the comb in consecutive j peated actions upon the slimes precipitateall of the values associated therewith.

Having thus described my invention what I claim is 1. The combination with an ore dressing machine including a stationary frame and a longitudinally movable and transversely displaceable ore surface, of an element mounted upon the frame and capable of moving transversely to follow displacement movement of the said surface, the said element having dependent projections spaced from the said surface and adapted to extend into slimes on pulp carried thereby.

2. The combination with an ore-dressing machine including a traveling belt, of an attachmentcomprising an element having a plurality of downwardly ranging teeth adapt ed to extend into slimes carried by pulp upon the said belt, means to su )port the said element transversely movab e relative to the said. belt, and members associated with the said element in free engagement with the longitudinal edges of the belt to follow displacement movement of the belt.

3. An attachment of the class named, comprising in combination with a movable ore-surface, a superposed element transversely movable in relation thereto and retary members associated with the said element, engaging the opposite edges of the said surface and adapting the element to follow displacement movements of the surface, the said element having dependent projections spaced from the said surface and capable of extending into pulp carried thereon.

4. In an ore-dressing machine, the combination with a longitudinally traveling, transversely displaceable ore surface, of a superposed element held against motion in the direction of travel of the said surface and adapted to follow displacement movements thereof, the said element having dependent projections spaced from the ore surface and adapted to penetrate the surface of pulp carried thereon.

In testimony whereof I have a'f'liXed my signature in presence of two witnesses.

JOSEPH O. DIlVlMfCK. Nitnesses:

L. M. CONRAD, A. E. ALEXANDER.

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