US540953A - Ore washer and concentrator - Google Patents

Description

(No Model.) 2 Sheets-$heet 1.

A. L. DANA. 'ORE WASHER AND GONGENTRATOR.

No. 540,953. I Patented June 11, 1895.

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No. 540,953. v Patented June 11,1895.

'UNITED STATES PATENT OFFICE.

ARTHUR L. DANA, F

ROSWELL, COLORADO, ASSIGNOR TO-J. C. FREEMAN, OF BOSTON, MASSACHUSETTS.

ORE WASHER AND CONCENTRATOR.

SPECIFICATION forming part of Letters Patent No. 540,953, dated June 11, 1895.

Application filed February 27, 1895. Serial No. 539,638. (No model.)

To all whom, itmoby concern:

Be it known that I, ARTHUR L. DANA, of the city of Roswell, El Paso county, State of Colorado, have invented certainnew and useful Improvements in OreVVashers and Concentrators, of which the following is a" full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof. to My invention relates to an improvement on the machine shown and described in myformer United States Patent, No. 481,550, dated August 30, 1892, and it consists in the novel construction, combination and arrangement of r 5 parts, hereinafter specified and designated in the claims.

In the drawings, Figure 1 is a view in perspective of my complete machine. Fig. 2 is a longitudinal sectional View taken, approxi- 2o mately, on the indicated line 2 2 of Fig. 1 and looking in the direction indicated by the arrow A A, Fig. 1. Fig. 3 is a vertical crosssectional view taken, approximately, on the indicated line 3 3 of Fig. 2 and lookingin the direction as indicated by the arrow B, Fig. 2. Fig. 4 is a view in perspective of one of the boxes into which the ore is deposited after the same has passed through the concentrator.

Referring by numerals to the accompany- 0 ing drawings, 1-1 indicate four upright posts, the same being framed together at their top ends by longitudinal timbers 2-2 and crosstimbers 3-3.

4-4 indicate parallel side timbers framed 5 into the uprights 1 at points below the longitudinal centers of said uprights 1, and framed into theselongitudinal timbers 4 at their ends arecross-timbers 5-5.

Located approximately half way between '40 and extending parallel with the top longitudinal timbers 2-2 is a central timber 6, the same being fixed to and resting directly upon the end cross timbers 3-3. This central timber 6' together with one of the timbers 2, ex- 5 tends a slight distance beyond the ends of the uprights l at one end ofthe frame, for a A purpose which will be presently shown.

Transverse timbers 7-7 are framed into the parallel timbers 2-2 and timber 6 between the timbers 3-3. These timbers so located and held together by means of suitable braces such as 8, constitute the-frame work, whereupon the operative parts of my improved apparatus are supported and which will now be described.

Hung to swing between the side timber 4-4 of the apparatus by means of jointed rods 9-9 hooked at their top ends to eyes 10 that are fixed to the cross-timbers 7, is a-rectangular oscillating frame comprising the side tim- 6o bers 11-11 and end timbers 12-12. Antifriction rollers 13 are positioned horizontally in the side timbers 4-1 and are adapted to engage the outer faces of the 'side timbers 11-11 of the oscillating frame and prevent any rubbing or friction that might otherwise ensue.

Rigidly fixed to the inner faces of the end cross-timbers 5 are leaf or bow springs 14, said springs being for the purpose of receiv- 7o ing the impact of the oscillating frame as the same reaches its limit of longitudinal movement. Fixed to one end of the oscillating frame and depending therefrom are metallic bars 15, the same having rigidly fixed near their lower ends, a transverse bar 16 from the center of which protrude ears 17. Between these ears 17 is pivoted the rear end of alink 18, the forward end of which is bifurcated and pivoted to the long arm of a bell-crank 8o 19, the same being fulcrumed at the juncture of the long and short arm between a pair of cars 20 that are bolted rigidly to and extend laterally from across-timber 21 that is located upon the parallel side timbers 4 andadja- 8'; cent two of the upright timbers 1 The upper end of the shorter arm of the bell-crank'19 is pivoted in the bifurcated lower end of an arm 22, the upper end of which is journaled upon the end of a crank 23 that is keyed upon one o end of a transverse shaft 21, said shaft being journaled in bearings 25 that are bolted to the under sides of the timber 6 and side timbers 2-2 that extend beyond the end of the machine. Located upon this shaft 2i and between the bearings 25 are tight and loose pulleys, indicated by the numerals 26 and 27 respectively. Upon the outer end of the shaft 24 is fixed a balance-wheel 28, of any suitable form and size. g [CO A frame comprising side timbers 29-29 and end timber 30 islocated in the oscillating frame previously described and is pivoted approximately at its longitudinal center by means of a transverse rod 31, that passes through the side timbers 29 and having its ends bearing in the side timber 11. A suitable receptacle depends from these side and end timbers, and is formed of sheet metal sides 32 and ends 33. The bottom 34 of this receptacle so formed is constructed of sheet metal and inclines from one side to the other. False bottoms 35 and 36 are constructed in this receptacle and incline from the center thereof to the ends 33, the inclined false bottom 36 extending to a point beyond the inner end of the false bottom 35, thereby forminga trap or passage 37 between the ends of said inclined false bottoms. Extending from the inclined false bottom 35 to the inclined false bottom 36 and lying in a horizontal plane, is a grating or screen 33, the same removably held in proper position by ears 39 fixed to the inclined false bottoms. By thus constructing the inclined false bottoms, a chamber 40 is formed between said bottoms and the true bottom 34 of the receptacle, said true bottom 34 as previously mentioned, inclining from one side to the other.

A transversely positioned plate 41 is hinged to the under side of the false bottom 35 adjacent the end thereof, and is adapted to close the passage 37 between the ends of the false bottoms 35 and 36. To the lower end of said plate 41 which performs the function of a valve, is pivoted a longitudinally extending rod 42 that passes through one of the end walls 33 of the receptacle, and is connectedby means of a link 44 to the downwardly pending arm 45 of a crank 46, the same journaled in bearings fixed to the under side of the end timber 30 and extending to one side thereof. On theend of said crank 46 is rigidly fixed a hand lever 47 that operates in and is adapted to be engaged by the teeth ofa segmental rack 48, the same being fixed to one of the side timbers 29 ot' the receptacle frame.

To the inner face of one of the end timbers 12 of the oscillating frame is fixed an auxiliary timber 49, that is sheathed with suitable packing 50 and is adapted to close the end of the receptacle opposite from the end-timber 30. A plate or tie-rod 51 connects the ends of the side timbers 29 and serves to retain the same in their proper positions.

Located in one of the side walls 32 just above the screen 33 is a series of apertures 52 that communicate from the interior of the receptacle with the interior of a rectangular tube 53 that is formed integral with and extends to one end of the receptacle.

A cut'oif plate 54 is constructed with a series of apertures 55 of the same size as is the apertures 52, and said plate lies directly over the series of apertures 52 and moves longitudinally in suitable bearings 56 fixed to the inside of the wall32. To one end of this cutoff plate 54 is pivoted one end of a link 57, the other end of which is pivoted to the lower end of a hand lever 58, the same being fulcrumed to the side wall 32, and the handle of which extends outside the receptacle and where itmay be conveniently reached.

Formed in the side wall 32 at the longitudinal center of the receptacle and adjacent the highest side of the inclined bottom 34 is a rectangular aperture 59 that is constructed with a suitable cover 60 on the outside of said wall 32.

Removably held in bearings 6L iixed to the under side of the inclined bottom 34 is asuitable receptacle 62, the same being preferably constructed of sheet metal, with the inclined bottom 63 and apertures 64 and 65 in its top. The aperture 64 is located directly beneath the aperture 59 in the lower end of therecep' tacle, and the aperture 65 is adapted to be closed by a sliding cover 66. In the side wall 32 directly opposite this rectangularopening 52 is a rectangular opening 67 that is constructed with a suitable cover 68, the same forming a guide for the vertically moving out- 01f plate 69, that is adapted to normally close said opening or aperture 67. Directly beneath this opening 67 and located in bearings 70 in every way similar to the bearings 61, is a receptacle identical in form and size with the previously described receptacle 62. Pivoted to the upper end of the vertically moving plate 69 is a link 71, to the upperend of which is pivoted, the forward end of a hand lever 72, the same extending longitudinally along the side of the receptacle, and the bandle of which is bent upwardly into a plane approximating that occupied by the handle of the fulcrumed hand-lever 58. A slight depression orgroove 73 is formed transversely in the bottom 34 of the receptacle and extends from the opening 59 to the opening 67.

Pivoted to the top or in the longitudinal center of the end timber 30 is a horizontally moving hand-lever 74, that normally engages beneath a catch 75 that is rigidly fixed to the top side of the end timber 12 of the oscillating frame that is adjacent said end timber 30 of the receptacle frame. By means of this hand-lever which may be properly termed a lock lever, the receptacle frame and oscillating frame are rigidly held against vertical movement relative to one another.

If desired,a glazed opening such as 76 may be located in one side wall of the receptacle, in order that the working and correct positioning of the valve or plate 41 may be at all times visible.

Secured to the under side and at one end of the receptacle is a hook 77 to which is attached one end of a rope or cable 78, the same passing upwardover a pulley 79 swung from the under side of one of the cross-timbers 7, and extends from thence downwardly, and is attached to a book 80 fixed in one of the upright posts 1. By means of this rope, the receptacle is tilted or swung to the position as shown by dotted lines in Fig. 2.

The operation of my improved ore washer ICC and concentrator is as follows: A driven belt passing over the tight pulley 27 imparts arotary motion to the shaft 24, balance-wheel 28 and crank 23. The arm 22 being connected to the crank 23 at one end and to the bellcrank 19 at the other end, necessarily imparts movement to said bell-crank, and as the arm 18 is connected at one end to the bell-crank 19 ing out or concentrating of mineral with my and to the metallic bars 15 that depend from the oscillating frame, said frame will be moved backward and forward in a horizontal plane and between the end cross-timbers 5 5. At the end of each horizontal throw or movement of said oscillating frame, the end timbers 12 of said frame will impinge against the leaf or bow springs 14, and the resiliency of said springs will tend to throw the oscillating frame in a reverse direction from that in which it was moving when it engaged said springs. Any suitable means may be employed,whereby water is discharged into the receptacle. The ore or dirt is placed directly within the receptacle upon the inclined false bottoms 35 and 36 and the screen 38. After the receptacle and contents thereof have been oscillated orrshaken for a stated length of time, the operator by means-of the hand-lever 58 opens the side cut-off plate 54:, which allows the lighter dirt, sand, &c., to pass through the coinciding apertures 55 and 52 and be discharged through the rectangular tube 53 at one endoftheoscillatingframe. Theheavier particles of dirt, sand and mineral will pass through thegrate 38 and will locate beneath said grate upon the, inclined false bottom 36 and against the valve 41. Said valve 41 is now opened by manipulating the hand lever 47 in the ratchet-rack 4:8, and said mineral and heavier particles of dirt are allowed to pass into the chamber 40 and upon the. bottom 34 of the receptacle. The continued os cillation or shaking, together with the action of the water causes the dirt,sand, &c., to pass offthrough the aperture59. Acertain amount of the lighter mineral will also pass through this opening and the same willby reason of its weight, gravitate downwardly and pass through the opening 64 of the receptacle 62 that is located immediately beneath said opening 59. The heavier mineral will by reason of its specific gravity, pass into-the groove or channel 73 and gravitate toward the aperture 67 that is normally closed by the vertically arranged. slide 69. When said slide 69 is raised by the action of the hand lever 72,'said heavier mineral will pass immediately into the receptacle 62 that is located beneath said aperture 67. The mineral after passinginto the receptacle 62, will by reason of its own weight, pass to the lowermost points or corners thereof, and at certain times during the washimproved means, said receptacles 62 are to be removed, the surplus dirt on the tops thereof washed out, leaving the free mineral in said receptacle. When it is desired to dump the matter from the receptacle, that does not pass the receptacles 62 to collect the mineral falling therein, though this is not essential to the complete Working of my device.

Slight changes in my apparatus may be resorted to, by any skilled mechanic, without departing from the spirit and scope of my invention.

Thus it will be seen how I have constructed an ore washer and concentrator, that possesses superior advantages in point of simplicity, durability and general efficiency.

V-Vhat I claim is 1. An ore washer and concentrator, comprising a rectangular frame, an oscillating frame mounted to swing in said frame,'leaf or how springs located at the ends of the frame and adapted to receive the impact of the swinging or oscillating frame, a receptacle pivoted within said oscillating frame, false bottoms for said receptacle, inclining in opposite directions toward the ends thereof, and

2. In an. apparatus of the class described, a suitable frame work, a frame mounted for a valve adapted to close the trap between the 'T ends of said inclined false bottoms.

IOO

oscillation Within said frame work, leaf or bow springs adapted to receive theimpact of said oscillating frame, means for oscillating said frame, a receptacle pivoted within said oscillating frame, false bottoms for said receptacle inclining in opposite directions toward the ends thereof, a valve adapted to close the trap or passage between said inclined false .bottoms, a hand-lever and connecting rods for operating said valve, and auxiliary receptacle, said auxiliary receptacles being constructed withincliued bottoms.

3. In an apparatus of the class described, the combination of a suitable receptacle, false bottoms for said receptacle inclining in different directions and toward the ends thereof, a valve closing the passage between said inclined false bottoms, a screen held upon said inclined false bottoms, a V-shaped groove or IIO -tacles held beneath the first mentioned recep- IO apertures or openings in the side walls thereof, and auxiliary receptacles constructed with inclined bottoms, removably held beneath the apertures in the side walls of the first mentioned receptacle.

In testimony whereof I alfix my signature (5 in presence of two witnesses.

ARTHUR L. DANA.

Witnesses:

FRED L. CRISSEY, THOMAS 0RD.

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