US1041842A - Ore concentrator or slimer. - Google Patents

Description

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1912. Patented Oct. 22, 1912.

I. P. MONELL.

ORE GONGENTRAIIOR 0R SLIMER.

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2 92 1-D C V @1! s [B I'ruF IIII APPLICATION FILED 13130.15, 1910. RENEWED APR. 8

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I. F. MONELL.

ORB CONGENTRATOR 0R SLIMER. APPLIOATION FILED DEO.15, 1910. RENEWED APR. 8, 1912.

1,041,842, Patented 001:. 22, 1912.

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I. F. MONELL. ORE GONGENTRATOR 0R SLIMER. APPLICATION FILED B30115, 1910. RENEWED APR. 8, 1912. 1,041,842.

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IRA F. MONELL, OF BOULDER, COLORADO.

ORE CONCENTRATOR OR SLIMER.

Specification of Letters Patent.

Patented Oct. 22, 1912.

Application filed December 15, 1910, Serial No. 597,396. Renewed April 8, 1912. Serial No. 689,409.

T 0 all whom it may concern:

Be it known that I, IRA F. MoNnLL, a citi- Zen of the United States, residing at Boulder, in the county of Boulder and State of Colorado, have invented certain new and useful Improvements in Ore Concentrators or Slimers; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in ore concentrators or slimers.

One object of the invention is to provide simple and efficient means for separating and saving the fine mineral which floats in the concentrating water and is ordinarily carried away and lost in the tailings.

Another object is to provide improved means for adjusting the swinging frame endwise, said means being arranged at the front end of the machine.

Another object is to provide a four plane continuous surface for supporting the upper stretch of the belt.

With these and other objects in view, the invention consists of certain novel features of construction, combination and arrange ment of parts as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawings: Figure 1 is a top plan view of a concentrator constructed in accordance with this invention; Fig. 2 is a side elevation thereof; Fig. 3 is a similar view taken on the opposite side of the machine to Fig. 2; Fig. 1 is a trans verse section thereof; F ig. 5 is a perspective view taken from the front end of a portion of the frame of this improved apparatus with the belt removed.

In the embodiment illustrated, a supporting or main frame is shown comprising bottom sills 1, top sills 2, vertical supports 3, and cross bars a, connecting the bottom sills. The supporting posts 3 at the front end of the machine preferably extend above the other supports 3 a suitable distance and are connected by a cross bar 5, for a purpose to be described.

A plurality of legs 6 are adjustably connected at one end to the opposite ends of the cross bars a of the main frame, preferably adjacent to the inner faces of the bottom sills 1, and extend upwardly and are designed to support the agitator frame hereinafter to be described. Any desired number of these legs 6 may be employed, according to the length of the slimer, four being here shown, arranged on each side of the main frame. These legs are constructed of any suitable resilient material, prefer ably of hickory wood, and are preferably about two feet ten inches high, though the height may be varied if desired. The lower ends of these legs 6 are provided with slots 7 of any suitable size to provide for the end or sidewise adjustment of the legs, as desired, through which clamping bolts as 8 pass and engage the cross bars 1 to hold said legs in adjusted position.

The legs on one side of the frame are arranged in transverse alinement with those on the opposite side and are connected at their upper ends by cross bars as 9. The legs 6 at the front end of the frame are provided in their upper ends on their front faces with blocks 10 and 11, which are gained or mort-ised for about three-eighths of an inch deep, more or less, to receive brass bearing plates, as 12, against which the eccentrics hereinafter described are designed to bear.

A drive shaft 13 is arranged transversely of the main frame and is supported at its opposite ends in bearings mounted on the top sills 2. This drive shaft 13 projects at opposite ends beyond the sides of the main frame and is provided with any suitable operating means. A cog wheel 14: is secured to one end of the shaft 13 and meshes with a crown gear 15 supported in suitable brackets arranged at one side of the main frame near its front end. A sprocket wheel 16 is connected with the crown gear 15 and is operated thereby to impart motion to a worm shaft 17 through a sprocket chain 18 which passes over a sprocket gear 19 fixed to said shaft 17. A gear Wheel 20 meshes with this worm shaft 17 and is driven thereby to impart motion to the belt driving drum hereinafter to be described, said gear wheel being mounted on the shaft of said drum.

Suitable eccentrics 21 are fixed to the opposite ends of the drive shaft 13 in position to engage the brass bearing plates 12 on the blocks 10 and 11 secured to the upper ends of the front legs 6. The rotation of the shaft 13 causes these eccentrics to intermittently engage these blocks and force the legs forward, imparting about a five-eighth inch movement, more or less, according to the size of the eccentrics, to the agitator frame which is mounted on these legs.

Rods 22 extend through the upper ends of the front legs 6 and pass through blocks or brackets which extend laterally inward from the posts 3. The projecting front ends of these rods 22 are provided with tail nuts as 2 1 between the inner faces of which and the blocks 23 are mounted coiled springs 25 which are designed to hold the brass bearing plates on the front legs 6 reliably in engagement with the eccentrics 21, and also to return the agitator frame to initial position after it has been moved by said eccentries. The tail nuts 24 are operable to vary the tension of the springs 25.

The swinging agitator frame which is mounted on the legs 6 comprises side bars 27 and 28 which are bolted to the cross bars 9 which. connect the upper ends of the legs 6, spacing blocks as 29 being preferably arranged between the lower faces of the side bars 27 and 28 and the cross bars 9 to provide for the inclination of the tailing troughs 30 and 31 which are arranged at one side of the apparatus and are inclined downwardly from their outer toward their inner ends as shown clearly in Fig. 3, which causes both of them to dischar e at their inner ends into a suitable receptacle (not shown).

A plurality of cross bars as 32 are connected at their opposite ends to the side members 27 and 28 of the swinging frame and are each preferably composed of two pivotally connected sections 33 and 34: to which the longitudinally extending floor strips are secured, preferably by nailing or otherwise. These strips 35 are preferably corrugated longitudinally on their upper faces to facilitate the passage of the belt thercover. The sections 33 and 34 of these cross bars 32 are preferably of different lengths, the section 33 being longer than the section 34, and the upper face of its inner end being flat and straight for about two feet, more or less, and its outer end inclined downwardly, the slope or inclination of said outer end being about one-fourth of an inch in eighteen inches. The section 34 is inclined downwardly and outwardly from its inner pivoted end to a point about midway of its length, the inclination being about one fourth of an inch in fourteen inches, the inclination of the outer end of said section being about three-eighths of an inch in eight inches. It will be observed that the second cross bar 32 is doubled to adapt the floor to be composed of sixteen foot boards at its rear end terminating at this double cross bar 32 with the front end of the floor composed of five foot four inch boards inclined upwardly from said double bar to the front end of the machine. This construction of these cross bars provides a floor having four planes on its upper face for the passage of the belt thereover. The front end of the swinging frame is suspended from the cross bar 5 by means of vertically disposed. rods, as 36 which extend through said cross bar and are preferably provided at their upper ends with nuts for varying the length thereof. Two only of these suspension rods are employed, but they are found to be very essential, as the strain or pull of the belt hereinafter described which passes over said swinging frame, is all. at this point where said belt passes over the driving drum to be described.

A plurality of belt guide rollers 37 are mounted at their opposite ends in suitable bearings on the top sills 2 and are preferably provided with flanges as 38 for preventing the lateral displacement of the belt during its slack return movement. Mounted at opposite ends of this swinging frame 26 are two rollers {S 39 over which the belt to be described is designed to pass.

A driving drum 4L0 of any suitable construction is rcvolubly mounted at the front end of the main frame in a plane below the agitator frame and to the axle of which the driving gear 20 is secured, and by means of which said drum is driven.

The belt 4-1 is mounted longitudinally in the main frame and passes over the rollers 39 at the opposite ends of the oscillating frame. This belt may be of any suitable or desired construction, but is preferably constructed of alternate layers of rubber and canvas, and its upper face near its opposite edges is preferably provided with a plurality of longitudinally extending ribs or corrugations 12 to provide strength to the edge of the belt, and also to catch any mineral. on the discharge side thereof. This belt may be of any suitable length and of any desired size, but is preferably about fiftynine feet long and five feet wide. The up per stretch of this belt passes over the floor of the swinging or agitator frame, and the lower stretch thereof passes under and around the drive drum or roller 10 and then upward and over a wrapping roller t?) to be described. The belt then passes over the flanged guide rollers 37 arranged on the up per sills 2 intern'iediately of the ends of the main frame and then around a roller 4:41 mounted on the main frame at the end opposite the drive drum carrying end.

The beltwrapping roller 43 is preferably mounted at its opposite ends in brackets which project forwardly from the front end of the main frame and are pivotally connected at their inner ends to the posts 3 of said frame. Beds 46 are connected at one end to the free ends of the brackets elf) and depend therefrom,extending through bracle ets which are rigidly connected to the posts 3 in a plane below the brackets and which form guides for said rods 46. Tail nuts 48 are arranged on the free ends of the depending rods 46 and coiled springs 49 are arranged on said rods between said tail nuts and the lower faces of the brackets at? and are designed to yieldably hold the wrapping roller 43 in engagement with the outer surface of the drive drum 40 whereby the belt ll is held reliably in engagement with said driving drum and slipping of the belt prevented, the tension of the springs 49 being regulated by the tail nuts to vary the gripping action of the wrapping rollers. The construction of these wrapping rollers holds the belt reliably in engagement with the driving drum without exerting any tension or strain on the lower or return stretch of the belt, which must be slack, as shown in Fig. 2 to prevent its disengagement from the guide rollers.

A. stock box 50 of any suitable construction capable of sizing the pulp into four sizes before it is drawn to the distributing box is arranged at one side of the apparatus near the rear end thereof, being preferably supported on an upright 51 secured to the main frame. The pulp from this stock box 50 is fed to a distributer box 52 arranged longitudinally on the agitator frame 26 near one side thereof and preferably supported on cross bars held in spaced relation above the floor of said swinging frame a suitable distance to permit the passage of the belt 4C1 thereunder by means of rods 54: projecting upwardly from the side members 537 and 28 of said frame. Any suitable or desired number of these cross bars 53 may be provided, four being here shown. This distributer box is divided into a plurality of longitudinally spaced compartments five being preferably shown, and which are designed to receive and distribute the four sizes of pulp discharged thereinto from the stock box through pipes The bottom of this box is perforated, and the compartment at the front end of said box is de signed to receive fresh water for washing out the pulp. The box-supporting cross bars 53 are preferably adjustable vertically to support the distributer box and the fresh water pans hereinafter described any suitable or desired distance above the belt. This adjustment of these bars 53 is preferably accomplished by screw threading the upper ends of the rods 54L and providing them with nuts as 55 arranged both above and below said bars.

A fresh water pan 56 is arranged longitudinally above the belt 41, being supported on the cross bars 53 at any desired point to supply the fresh water just at the point of separation of the sand from the mineral bedded on the belt, thus dressing the sand farther away without disturbing the min.-

eralbed formed on the belt. This trough 56 is preferably V-shaped in cross section and is about four feetlong, more or less, being preferably perforated in its bottom with the perforations preferably arranged about two inches apart. Another fresh water pan 57 is arranged crosswise of the belt al at the front end of the machine, being preferably mounted on the cross bar 5, and arranged near the side of the belt opposite to that over which the distributing box is mounted, and is designed to wash back the sands on the last twe ve inches of that side of the belt. This pan is preferably about fourteen inches long, more or less, and is constructed V-shaped in cross section.

A tie or truss rod 58 passes through the side rail 27 of the swinging frame and through a cross bar 59 secured to one of the lower beams 1. When this truss rod is tightened the front legs 6 on which the swinging frame is supported may be loosened and the front end of the frame moved upwardly by means of the hangers 36 to procure the desired inclination of the swinging frame for dressing the sands back at the fresh water pan 57.

In the operation of this concentrator or slimer, the parts being in the position shown in Figs. 1, 2 and 3, lotion is imparted to the drive shaft 13, each revolution of which causes the eccentrics 21 secured thereto to bear against and force the resilient front legs 6 rearward, which causes the agitator frame 26 secured thereto and to the legs to move longitudinally in one direction. The springs 25 exerttheir tension in connection with the resiliency of the legs to return said frame to initial position when the eccentrics move out of engagement with said legs, and hence a substantially continuous reciprocatory motion is imparted to said frame and the vibrations thereof are softened from a severe shock by the springs 25. The pulp is fed from the stock box 50 through the pipes 55 to the respective compartments of the longitudinally disposed distributing box whereby four different sizes of ore are distributed in four different places along the line of the belt, and water is supplied to said distributer from any suitable source entering the compartment at the front end of said distributer.

The water pans 56 and 57 arranged longi tudinally and transversely of the belt respectively, provide a broken series of water supply means to dress the sands over the different planes lengthwise and crosswise of the belt and thus form a break in the line of supply which jumps over the bed of mineral formed on the belt.

The floor of the agitator frame 26, which is mounted on the hinged cross sectional cross bars 32, may be adjusted vertically at any desired angle to vary its lateral in- L041 s re clination, and the four plane surface pre: sented thereby to the belt permits the mineral to be bedded on the first plane a, and the sands redressed on the second plane Z) over the third plane 0, and the steep incline of the fourth plane (Z allows the sands to pass rapidly over the corrugated edge of the belt 41 at the discharge side of the machine and fall into the troughs 80. This arrangement of the floor provides a level panning condition at the point of separation.

The belt traveling downward lengthwise.

carries the bedded mineral and silica under the wash water, which works the sand to the discharge side of the belt while themineral is borne to the wash boxes, the mineral bed having been unbroken from the point of separation. The peculiar arrangement of the wrapping roller for folding the belt around the drive drum prevents straining or tightening of the belt as a whole and permits the slack return thereof over the flanged guide rollers 37 whereby it is held against lateral displacement.

This construction of the concentrator, while very effective, enabling a saving of about eighty-four per cent., more or less, to

be made on the sulpho-tellurids, and aboutv fifteen per cent. to be added to the saving of tungsten, is very simple and may be operated by inexperienced persons.

From the foregoing description taken in connection with the accompanying drawings, the construction and operation ofothe invention will be understood without requiring a more extended explanation.

Various changes in the form, proportion and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of the invention as defined in the appended claims.

I claim as my invention:

1. In a belt ore concentrator having a transverse. series of longitudinal continuous plane surfaces, some of which are hingedly connected with others, one of said surfaces being arranged to bed mineral thereon, another to receive and redress the sands thereon, and another inclined. laterally to permit the sands to .pass laterally thereover, and means for varying'the lateral inclination of said planes relatively to each other.

,2. A concentrator having a four-plane longitudinal continuous belt supporting surface, said planes being rigidly connected in pa'irs and said pairs pivotally connected at their inner ends to vary the lateral inclinat-ionof saidsupporting. surface, the initial plane being adjustable and inclined reverselylto the transverse flow, and the trans versely succeeding concentrating planes being inclined at varying angles in the direction of the flow and a belt operable over said surface.

3. In a belt concentrator, the combination of a supporting structure, an agitator frame mounted therein, means for vibrating said frame, the floor of said frame being composed of aplurality of sectional cross bars, the sections of said cross bars being pivotally connected and the upper faces of each cross bar having a transverse series of four longitudinally continuous planes, longitudinal strips secured to said cross bars, the initial plane being adjustable and inclined reversely to the transverse flow, and the transversely succeeding concentrating planes being inclined at varying angles in the direction of the flow, and a belt operable over said floor. T A

4. A concentrator comprising an endless beltv whose surfaceis, divided into a transverse series of longitudinally continuous planes, the initial plane being adjustable and inclined reversely to the transverse flow and the transversely succeeding concentrating planes being inclined at varying angles in the direction of the flow, a shaking support for said belt and means for supplying pulp to the initial plane.

In testimonywhereof I have hereunto set my hand in presence of two subscribing witnesses.

IRA F. MONELL. Witnesses W. T. MoGlInNIs, H. M. WVILLIAMs.

Copies of this patent may be obtained for'five cents each, by addressing the Commissioner of Patents, Washingtomj I). 0.

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