US30290A - William oland bourne - Google Patents

Description

i W. o. BOURNE.

Bed for Ore Separators. l

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\ N- b Si Witnesses OQ Inventor: @gf-@ MM5/M UNITED STATES P FFlQE.

WILLI-AM OLAND BOURNE, OF NEV YORK, N. Y.

ORE-SEPARATOR.

To all whom t may concern:

Be it known that I, IVILLIAM OLAND BoURNn, of the city, county, and State of New York, have invented a new and improved apparatus or machine for separating ores, metals, and other substances of different specific gravities, which I name and designate as an improved bed for ore-separators; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing, making part of this specification, and to the letters of reference marked thereon.

Figure l is a -plan of my said improved bed. Fig. 2 is a vertical longitudinal section. Fig. 3 is an end elevation, and Fig. 4 is a perspective view of the bed inverted.

Similar marks of reference denote the same parts.

My said invention relates to the construction of a bed upon which the ore rests, while being operated upon by a current of air or water passing upward through said bed.

By reference to my patent of November 24, 1857, and also to my patent of June 14th, 1859, the object and mode of using this bed will be more fully apparent. My said bed may however be used on other machines furnished with any appropriate apparatus for producing an intermittent or continuous current of air or water upward from beneath the bed for the purpose of effect-ing a concentration or separation of the heavier from the lighter materials operated upon.

I construct a bed-frame a, which is attached to the body of the machine by clamps, hooks, or any similar fastenings which can be quickly adjusted. This frame is furnished with rails or cross-bars Z), of either wood or metal, which serve as a support for the burden which is to rest upon them. A piece of coarse wire cloth c or its equivalent is then secured by screws or nails or otherwise to the top of the frame a and a cloth bed CZ is then placed upon the frame over the wire-cloth. This cloth-bed is composed of one, two, three, four or more layers of cotton, woolen, or linen cloth, or their equivalent, the texture of which as to coarseness or lineness, or the number of the cloths, or the mode and form of their arrangement on the whole surface of the machine, must be adjusted or regulated with reference to the kind of ore or other matters to be operated upon.

e is a guard-frame, which may be all of wood or metal, or in part of each, and may be secured as represented by the screws g, g, or otherwise to a, and is open at one end, where an adjustable slide, f, is placed for the purpose of regulating the depth at which the materials shall be operated on, coarse substances requiring a greater depth than those of a fine grain. The adjustable slide f is formed with slots, 7i, 7L, and the screws z', 2'-, that pass through said slots, secure the slide when adjusted to the proper position.

Before placing the cloth or cloths on the frame I .take pieces of wire, of any suitable kind of metal and cut to a proper length and bend them so as to form a yoke which I pass down through the wire cloth, over the bars or rails b, at convenient distances, say from three to live inches apart, more or less, and then by turning up the end of the wire yoke under the said bars or rails or by twisting the ends together a permanent attachment is obtained, (see 71;, 7c, Fig. 4,) which binds the wire cloth, c, to the cross bars I), b. When the cloth-bed cl, has been fastened in its place by small tacks around its edges, or in any equivalent manner, I then stitch or quilt the cloths to the wire cloth by stitches Z, Z, as seen in Fig. 4, a short stitch being made on the upper side of the bed, and the long stitch made underneath, as represented by the red lines. The object of thus stitching down the bed or securing it in any equivalent manner to the frame work beneath is to prevent it from being raised and forced upward by the pressure of the current of air or water from beneath. The operation requires a fixed or firm surface, but it is not necessary to have it horizontal, as it may be inclined, concave, or convex or furnished with riifles, blades, or bars or any other contrivance, but to insure a satisfactory action of the machine the bed must not be allowed to bag or swell upward by the pressure from beneath, or to be depressed in any part by the material which it sustains.

W'hen the above described yokes or fastenings are not used, the coarse wire cloth may be attached by cords or otherwise. A sheet of coarse wire cloth, or bars ruiming lengthwise or transversely or both, may be used for the purpose of protecting the clothbed from the abrasion and attrition which will occur to a greater or less extent in the use of the machine, and may be constructed of such strength as to be a substitute for the yolres and stitches above described, or rifiles may be adopted in their place.

The operation of the bed is as follows: The ore or other materials to be operated upon is prepared by pulverizing in the ordinary mode, and should be sifted when required, and is fed on the bed at the rear end m, where a hopper is placed, and the current of air passing from beneath through the cloth bed is uniformly distributed through the whole surface, and coming in contact with the ore or other materials the air permeates and fills the whole mass, so as to cause such a degree of mobility among the particles, that they readily flow in any direction like a fluid. The result of this high degree of mobility or fluidity, so to speak, is a rapid and effective deposition of the heavier substances, while the lighter pass off over the waste edge f, of the machine.

In a circular l machine the hopper will be over the center of the bed, and the waste material passes off at the edge.

I do not confine myself to any form of this machine, as I make them either circular square or oblong, and they may be polyangular, or of any other form. In a circular machine the upper frame represented by e, may be dispensed with and the adjustable front edge or rim f, alone used, secured by slots and screws, the same as the slide f. Nor do I confine myself to the use of the cloth uniformly on the same surface, as they may be varied in several formsas by using a bed having coarse cloth on one part of the surface, and fine cloth on the other part; or one part of the surface may have one or two cloths, while the other part may have more. I comprehend all these modifications in my invention, the essential feature being the use of layers of cloth, or their equivalents, so adjusted attached or regulated in texture and thickness as to produce uniform pressure and distribution of the water .or air made use of, reference being had to the coarseness and fineness of the substances to be treated. Nor do I confine myself to the form or mode of fastening the bed above described to the frame a, on the bars b, for when made of wood the bed may be secured to the frame by nails, or tacks, or any equivalent, which I use when proper, the essential feature being that of so securing the bed to the frame that the pressure from beneath shall not undulate or disturb the plane or surface upon which the ore rests, but the said plane or surface may have any required inclination or conformation. Water may be substituted for air where its use is desirable.

What I claim and desire to secure by Letters Patent and as not before known or used is the following:

1. A bed for separating ores or similar substances composed of layers of fibrous or woven materials, secured by stitches or equivalent means, for maintaininga fixed and firm support to said bed, and preventing unevenness and bagging as set forth.

2. In combination with a bed constructed as set forth, the adjustable plate or rim f, for regulating the depth of the ore on the bed as described.

i In `witness whereof I have` hereunto set my signature this thirtieth day of August, 1860.

WM. OLAND BOURNE. Witnesses:

LEMUnL W. SERRELL. CHAs. H. SMITH.

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