US487261A - Ore-concentrating machine - Google Patents

Description

(No Model 3 Sheets-Sheet 1.

' A. FRASER.

ORE OONOENTRATING MACHINE.

No. 487,261. Patented Dec. .6', 1892.

4 W 2112788888: I hygnior:

(No Model.) 3 Sheets-Sheet 2.

A. FRASER;

ORE OONGENTRATING MAGHINEi I No. 487,261. Patented Dec. v6, 1892.

O N R 08 q I E g c8} Hpf ll +1541 1 l W, ha l: l'n I I m i' 'llt LE 1) 'l l M a \g p k "1"]! a Q s i Y 7w Q Q N [M Q N 0 V h \V b W 1 N I 9 U Q; 5 I '1 W: K MI I Wz'nesses: Inventor- (No Model.) 3 Sheets-'Sheet 3 A FRASER ORE GONGENTRATING MACHINE.

Patented Dec. 6-, 1892.

' Witnessesrrn ATENT rrrcn.

ORE-CONCENTRATING MACHINE.

SPECIFICATION forming part of Letters Patent No. 487,261, dated December 6, 1892.

Application filed December 30, 1891. Serial 110.416.588. (No model.)

To all whom it 772mg concern:

Be it known that 1, ANDREW FRASER, a citizen of the United States, residing in the city and county of San Francisco, State of California, have invented certain new and useful Im provements in Ore-Concentrating Machines;

and I hereby declare the following specifiecation and the drawings accompanying and forming a part of the same to be a full and to exact description of my improvements.

My invention relates to that class of machines known as concentrators or vanners for selecting or concentrating minerals from crushed ore, sand, or other earthy mat- I 5 ter by means of agitation while the material is suspended in or saturated with water; and it consists in the construction, arrangement, and combination of parts, substantially as will be hereinafter described and claimed.

Referring to the drawings, Figure 1 is a plan view of a machine constructed according to my invention, with some of the details removed. Fig. 2 is a side elevation of the same machine. Fig. 3 is an end view of Figs. 1 and 2. Figs. l, 5, and 6 are details showing the manner of constructing the pivotal supports for theapron and its connected parts.

Similar letters of reference are employed on the different figures to indicate corresponding 0 parts of the machine.

In notation, A A A represent the timber framing or foundation on which the machine rests.

Bis the apron or continuous web on which concentration is performed.

C is the main or driving drum, around which the apron passes.

G is the idle-drum, over which the apron passes at the rear of the machine.

0 C are intermediate supporting-rollers that sustain the apron and turn up the edges to form flanges.

C are deflecting-rollers beneath the apron to lift it clear of the machinery.

5 D D are pivoted supports, on which the apron and its supporting-frame are mounted.

E is the crank-shaft for producing an oscillating movement of the apron and its connected parts.

E E are the cranks at each end of the main driving-shaft.

E is the intermediate shaft set at the axis of the aprons oscillating movement.

F F are links or connecting-rods for operating the apron and its supporting-frame. G is a gear-wheel driving the main drum 0'. H is a worm or tangent wheel imparting motion to the wheel G.

H is the shaft and axis of the worm-wheel H.

H H are driving-bands operating the feed motion of the apron.

I is the main drivingpulley for applying power to the machine.

J is a tank, into which the concentrates are discharged from the apron B.

K is a distributing-box, from which material is fed to the apron B.

L are Water-pipes for supplying the apron B.

I. are cooks for regulating the amount of water supplied to the apron. 7c

M are the bearings of the crank-shaft E.

N is a coupling connecting the two parts of the shaft E.

O O are conical drums regulating the rate of lineal movement of the apron B.

P is a pedestal for receiving the pivotal supports D D Q Q are channel-bars forming the sides of the main frame of the apron B and its details.

R is one of the brackets on which the rear drum C is mounted.

S is one of the adj Listing-screws for moving the drum 0 T is the rear end of the apron, where the waste material is discharged.

U is a hand-wheel for shifting the band H and regulating the speed of the apron 18.

V is a stop-cock controlling the supply of water to the apron B.

W is a hose-pipe for conveying water to the tank J.

X is the bearing of the pivotal shaft E.

Y Y Y are detents to keep the bracket or support D central on the foot-step I.

Z is the nipple for connecting hose-pipe. I

w is the hose-pipe to collecting-tank J. a is the screw-joint in the connecting-links. e is the conical extension on rollers 0 m is the convex face of the pivotal supports D.

8 represents brackets to. support drums fO In that class of concentratingunachines to which my invention belongs the continuous aprons, in addition to their lineal or feed movement, require agitation by lateral, circular, or oscillating motion, or combinations of these; but of Whatever kind, this agitating movement has hitherto been produced so as to react upon the framing of the machine, and, usually, at or near the top, causing destructive vibration and consequent wear of the parts. To obviate this objectioml dispense altogether with the usual main frame and mount the apron B and its connected parts upon two or more supporting-brackets D D which are pivoted and rest upon the pedestals P, set upon the foundation.

To avoid the effects of the agitating movement, which is in this case a rocking or oscillatingone, I place the crank-shaft E inbearings M,M, also set upon the foundation, and arrange the connecting-links F F in anearlyvertical position, thus changing the line of force and reaction of the apron B audits parts from a horizontal to a vertical plane and to the foundation A. The movement of the apron and its frame Q, being portions of a revolution around the axis at E and the connecting-rods F and F being tangential thereto there is no vibrations or strains in a horizontal direction to cause wear or derangement.

The crankshaft E has a main driving-pulley I and a truncated cone-pulley 0, also cranks E and F. at its ends. For convenience in erecting and to provide for placingand removing the pulleys I and O, I make the shaft E in two pieces and join them by a coupling N. To adjust the apron B and frame Qand keep the working surface level when in a neutral or central position, I provide joints or a in the connecting-links F and F so the apron B can be readily adjusted and kept in a proper position by shortening or extending these links and without other adjustment of any kind. The apron B is made of any flexible material, either fibrous or of gum, and is strained so as to lie Hat by means of the pulley or drum G which can be adjusted forward orback by means of the movable brackets R and the screws S, as shown in Fig. 2.

To perform the feed or lineal movement of the apron B, motion is taken from the conical drum 0' by the band H to the second conical drum 0 on the shaft E and then by another band H from the shaft E to the shaft H as shown in Fig. 3. This shaft H is pro- 7 vided. with a worm or tangent screw I-I', gearing into the wheel G, which drives the drum 0 and the apron B at a slow rate, which can be varied by shifting the band H on the conical drums O and 0 This adjustment is made by means of a common shifting-fork, operated by a screw and the hand-wheel U. (Shown in Fig. 3.)

The ore or material to be concentrated is fed from the distributing-box W and falls on the apron B in a thin stratum across its width and is taken ,up and moved toward the rear end of the machine bytheaction of the water escaping at the cocks L falling on the apron and flowing toward the lowest end at T. The concentrates or particles of mineral matter being heavier than the sand or earthy matter settle at the bottom, adhere to the apron, and are carried back and around the drum 0 to fall or be washed off at the tank J.

The material on the apron B is prevented from spilling over the sides by a flange orlip turned up by the conical extensions e e of the bearing-rolls 0 as shown in Fig.1. This raised lip or flange becomes fiat again as the apron B approaches the drum 0. The gangue or waste material falls off the apron B as it passes over the rear drum C The deflection of the apron B bythe drums or rollers O is to raise the bottom part clear of the machinery and parts beneath and prevents vibration of the Web, which mightotherwise take place. The drums C are mounted on pivoted brackets S, adjusted bythescrews 0, so that the lower reach of the apron maybe set up or down accordingly.

' \Vater is introduced through pipes L, and in the horizontal section above the table Iin sert a number of adjustablecocks L which .can be set to distribute the water uniformly over the surface of the apron B, or an increased amount can be supplied at the sides or in the center, the supply as a Whole being controlled by a valve Vin the usual manner.

The hose-pipe Wis connected from the'water-supply to thebottom-of the tank J to provide water required there.

Referring to Figs. 4, 5, and 6 these represent one of the pivotal brackets or supports on which the apron B and its frame are mount- .ed and the manner of constructing the foot step at the bottom.

In the partial end view, Fig.4, the pieces Y Y Y are detents to retain the bracket or support D in a central position over the pedestal P. The top of the pedestal P is flatand the bearing of the bracket resting thereon is curved and also indented, as .shown at m in the section, Fig. 5, so as to form protecting lips or flanges n all around the bearingand protect it from grit and sand.

The bearing X for the shaft E is formed integrally with the bracket or support D, as shown in the section, Fig. 6. This bracket D, as may be seen, is made to span the main frame of the apron B and to receive .at each side the channel-bars Q, which are the. main members of this frame.

Having thus described the naturetand objects of my invention, also the manner of constructing and applying the same what I claim as new, and desire to secure by Letters Patent, 1s-

1. In an ore-concentrating machine as herein described, an oscillating frame having v a rocking motion on rolling faces, as herein described, placed at or near the plane in which the actuating-cranks are situated and at the base of the machine, so that the, action of the cranks will be transverse to the rolling supporting-faces and in a vertical or nearly-Ver tical plane and so the momentum of the vibrating table and its attachments will fall vertically on the foundation-frame,in the manner substantially as and for the purposes specified and set forth.

2. In an ore-concentrating machine, an endless apron and supporting-frame for the same having a rocking or oscillating movement, as herein described, mounted on pivotal rolling supports on the foundation-frame, and a crank-shaft to actuate the apron, also set on the foundation-frame and connected to the apron-frame by links, which can be lengthened or shortened, so that the upper or working surface of the apron can be set by such adjustment and the ore be equally distributed thereon, in the manner substantially as and for the purposes specified.

3. In an ore-concentrating machine having an oscillating movement, as herein described, rolling supports for the same placed at or on the foundation-frame, branched supporting standards resting on the rolling-faces and extending to the outer rails of the apron-supportin g frame, so as to dispense with framing other than the foundation, in the manner and for the purposes herein set forth and described.

4:. In an ore-concentrating machine, an oscillating apron-supporting frame supported on branched standards provided with rolling bearings set on the foundation-frame, an actuating crank-shaft set at the side of the machine also on the foundation-frame, the shaft divided into two coupled parts, and a driving-pulley placed between its bearings, and the cranks overhung at each end, so that they can be made solid with the shafts and the con- 40 nections conveniently removed without disturbing the driving-gearing, substantially in the manner and for the purpose specified.

5. In an ore-concentrating machine, an oscillating apron-supporting frame with an end- 5 less apron thereon, the frame mounted on standardssupported onrollingbearingsplaced on the foundation-frame, and an intermediate feeding-shaft mounted in the support ing-standards near the center of their oscillation and connected to the main or crank shaft by means of a belt and conical drums also to the driving-apron drum by tangent gearing, in the manner substantially as and for the purposes set forth.

In testimony whereof I have hereunto atfixed my signature in the presence of two witnesses.

ANDREW FRASER.

Witnesses:

ALFRED A. ENQUIST, WILSON D. BENT, Jr.

Images