US1029089A - Ore-concentrating launder. - Google Patents

Description

P. R. STANHOPE.

' 03E coNcBNTRATmG LAUNDBR. APPLICATION FILED AUG. 12, 1911.

wila/Lew en s@ coLUMBxA PLANOGRAPH 1:0,WASHINGTON D c PHILIP R. STANHOPE, OF DENVER, COLORADO.

ORE-CONCENTBATING LAUNDER. ff i I i Specicaton of .Letters Patent.

Patented June 11, 1912.

Application led August 1 2, 17911. Serial No. 643,743.

To allv whom it may concern:

Be it known that I, PHILIP R. STANHOPE, a citizen of the United States of America, residing in the city and county ofDenver and State of Colo-rado, have invented anew and useful @re-Concentrating Launder, of which the following is a specification.

My invention relates to improvements in ore concentrating launders, and the objects of my invention are: first, to provide a V- shaped launder having a hydraulic ore agitating and mineral concentrates collecting mechanism, and second, to provide an ore concentrating launder that is provided with an adjustable means of catching 4floating' slime mineral, and a hydraulic and also a mechanical ore pulp agitating and separating and a riffling mechanism. I attain these objects by the mechanism illustrated in the accompanying drawings, in which:

Figure 1 is an end view of the machine. Fig. 2 is a side view of the feed end of the machine. Fig, 3 is a plan view of the portion of the launder shown in Fig. 2. Fig. 4 is a transverse sectional view of the launder showing a slimes catching device connected therewith, and Fig. 5 is an enlarged sec- Y tional view of the jet separator, a portion of the launder being shown.

Similar reference numerals refer to similar parts throughout the several views.

Referring to the drawings, the numeral 1 designates a V-shaped launder having its feed end 2 closed by a boarding 3. A chute 41- is arranged to discharge ore pulp from a stamp or other o-re crushing mill, or from an ore grinding mill, into the feed end portion 'of the launder. A strip of wood 5, is secured iatwise valong the bottom of the head end portion of the launder for a short distance, in order, to form a connecting support for one end of a vertical pipe-nipple 6, which is extended up through an aperture formed in the angular'bottom edge of the launder, into an aperture formed in the strip 5, to receive it. A Y pipe fitting 7 is secured to the lower end of this nipple, withits adjacent pair of apertures depending from the nipple, and a valve stem 8, is threaded to the vertical entrance to the Y, which extends through the Y and the nipple tojits upper end, where it is provided with an inverted conical head 9, that forms a valve, and the top edgeV of the nipplepis provided Vwith a beveled edge opposite to the bevel of thevalve, and the space between the end of the nipple `and around thek sides of the valve forms an entrance passage for the settled mineral particles, which work down into the body of the nipple, into and through the passage into the other portion of the Y fitting, andv out through a discharge pipe 12, that is threaded to its end, through which it flows and discharges to a storage bin, which I do not illustrate.

This valve stem can be moved up or down by turning it in its thread in the end of the Y, to increase or decrease the size of the mineral inlet into the pipe nipple. This valve I term a water jet regulating valve. The opposite end of the valve stem is threaded, and a hand wheel valve 13, is threadedly connected to it, A nipple 14, is connected to the opposite end of the hand wheel valve, and a hose 15 is connected to the nipple. This hoseis adapted to extend to a supply of clear water under pressure, which, when the hand wheelvalve is open, flows through the stem into the bottom of the launder, as will be explained more fully hereafter.

From the end of the strip 5, the bottom of the launder is V-shaped, and extends in this V-shaped form throughout the rest of the length of the launder, which may be of any predetermined length, and in its opposite sides close to its bottom rows of nails, 17, are driven into it a portion of the length of the nails, leaving the remainder of the nails projectingv from the insides of the trough. These nails form riflies, and they are placedto stand out the sameA distance from the wood and are preferably arranged so that they intermesh with each other, but are separated from each other by a small space, being preferably set about one inch apart, in each row. Consequently the spaces between the head ends of the nails would y apron 19, that extends from the bottom edge of the Vlaunder at such a downward angle as will permit the concentrates to wash across the apron. This apron preferabl consists of a board that forms a continuation" of the board that forms the opposite side of the launder from these outlets, and it is preferably covered at and adjacent to the outlet apertures 18, with a piece ofsheet iron 19A.

In the construction shown in Fig. 4, the plate 19A is dispensed with, and the opposite sides of the trough are provided with rabbeted longitudinal apertures 19B and 19D, respectively, and glass and steel plates 19C and 19E, respectively, are secured therein. If desired, this plate may be glass on both sides, or if preferred, it may be a glass plate on one 'side and a steel plate on the other. These plates may be secured in these apertures by any suitable means. If glass is used, it will enable the action of the jets to be watched and adjusted, if desired, by the operator.

The object of using a steel plate is to obtain a material there hard enough to withstand the wear of the outward flowing mineral particles through' the discharge apertures. Water jet discharging nozzles 20, are placed on the apron, and are arranged to deliver jets of water up into the apertures 18, preferably slightly upward against the stream of ore pulp flowing through the launder. These nozzles 20 are connected to lengths of hose 21, that lead to a supply of water under pressure, and their water discharging ends are preferably flattened to deliver a flat stream. These nozzles and the hose foreach may be secured in operative relation to the discharge apertures of the launder by any suitable means. I preferably, however, support each by a bracket 22, which is shown broken away in Fig. 2, one end of which is secured to the adjacent side of thevlaunder, and the opposite end is provided with a clamp 23, that is secured to the hose 21. These concentrates discharging apertures are provided with gates 24, by which they may be adjustably opened or be closed when desired. These gates may be of any suitable form, preferably, however, I use a plat-e, which is pivotally secured by a bolt 26 at one corner to the adjacent side of the launder, and which is adapted to be swung up and down to open or close the apertures'as desired.

My improved ore concentrating launder isV adapted to be suspended at its opposite ends by rods 32 from timber frames 33, which are placed at its opposite ends, the rods 32 being connected at one of their ends to eye bolts .34, that are secured to the inside of the timbers, and also to eye bolts 34A at their opposite ends that are attached to the tops iof the opposite sides of the launder. The head end ofthe launder -is also provided with a bumping mechanism, which is adapted to impart intermittent reciprocating blows against the end of the launder, that act to quickly settle the mineral par.- ticles out of the ore pulp to the bottom of the launder. This bumping mechanism comprises avertical frame 36, that is pivotally supported at itslower end to floor sills 37,

kby a bolt 38, and at its upper end is provided witha hammer or bumping head 39,

of metal or other suitable material, which is arranged to strike against a buer plate 40, of metal or other suitable material, which is secured to the end of the launder.

rIhe bumper head is actuated on the backward stroke of its reciprocal movement by a cam 41, which is vmounted on a shaft 42, that extends across the end of the launder supporting frame 33, and is mounted in bearings 43, that are secured tothe frame 33. The cam rotates against a plate 43A, that is secured to the frame 36. A pulley 44, is secured on the shaft, and is adapted to be connected by belt to a source of rotative power, by which the shaft and cam. are rotated, to move the bumper frame and bumper on its backward stroke, and the bumper frame and bumper yare thrown forward to strike or bump against the launder by a contracting tension spring 45, which is preferably a coiled spring. This spring is con` nected at one end to the bumper frame intermediate of its cam engaging part and its pivoted end, by a pin 46, that extends through the bumper frame 36, and its opposite end is secured to the end of a bracket 47, that is secured to the frame.

The launder is provided at intervals along its length with slimes catching devices, which consist of pieces of carpet or other suitable fabric 48, which are arranged to depend from a rod 49, that is vertically adjustable in brackets 50, tha-tare secured to the opposite sides of the inside of the launder (see Fig. 4). The brackets are provided with several' open-sided apertures 51, which are arranged to register opposite to each other and the rod is vertically adjustable in them by being moved from one op posite pair of apertures to another opposite pair of apertures in the brackets. The carpet is arranged to depend into the ore pulp, and as the ore pulp flows along the launder the floating material called slimes flows in contact with the carpet and is caught and retained by it, and as this floating slimes material carries values, it is caught and saved by the carpets. The carpets are removed from time to time, and thrown into tanks of'water, which I do not illustrate.

The operation of my improved ore concentrating launder is as follows: Ore pulp is fed from a source of supply into the launder through the ore chute 4, and flows in a continuous stream through the launder and out'of its rear end, which is open and allows the tailings to run to waste, or they may berun into another similar launder for retreatment, and then run to Y, waste. As

the ore pulp flows through the launder, the

-mineral particles therein settle down into l j cles from the bottom of the launder and allows the lighter gangue particles among the mineral particles to be separated from the mineral particles and carried oi 'with the flowing ore pulp, while the clean min-- eral particles settle down as concentrates and flow out of the discharge aperture around the jet valve 9, and through gated apertures 18 in the bottom of the launder. The remaining part of the ore pulp, which is called tailings, discharges from the open discharge end of the launder;

While I have illustrated my improved launder with two different arrangements of ore concentrates discharging apertures and water jet inlet nozles, I do not wish to be limited to the constructions and arrangements shown, as my invention contemplates the application to a launder oi' any suitable ore concentrates discharging outlets and water inlet nozzle arranged to produce an upward current of clear water from the bottom of the launder into the ore pulp.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In an ore concentrating launder,- the combination in a launder having a discharge aperture of a pipe fitting, extending into said aperture and depending from the bottom of said launder, and having an angular discharge portion below its connection with said launder, said fitting being provided with an outwardly flaring vinlet edge, a water discharging nozzle within said launder provided with an outwardly beveled head, threaded to the inside of the outer end portion of said pipe, said threaded end being arranged to permit its head end portion to be adjusted toward the iiaring inlet end of said pipe fitting, a threaded outer end to said nozzle, a valve connected to said threaded end, and a hose connected to said valve and arranged to lead to a supply of water under pressure.

2. The combination with an ore concentrating launder, of riiiles consisting of rows of nails projecting from opposite sides of the interior of the launder adjacent to its bottom.

3. The combination with a V-shaped launder, of ritles consist-ing of rows of nails extending from opposite sides of the interior of the launder adjacent to its bottom, the rows on one side being arranged to overlap those on the other side.

In testimony whereof I aiiix my signature in presence of two witnesses.

PHILIP R. STANHOPE.

Witnesses:

G. SARGENT ELLIOTT, ADELLA M. FowLE.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, I). C.

Images