US2070069A

US2070069A - Ruoss

Info

Publication number: US2070069A
Authority: US
Publication date: 1937-02-09
Anticipated expiration: 1954-02-09

Description

Feb. 9, 1937. w uos 2,070,069

JIG FOR TREATING QRE BEARING AND LIKE MATERIALS 2 Sheets-Sheet 1 Filed July 17, 19 35 INVENTOR Wait 64.014

W. RUOSS Feb. 9, 1937.

JIG FOR TREATING ORE BEARING AND LIKE MATERIALS Filed July 17, 1935 2 Sheets-Sheet 2 lNVENTOR Patented Feb. 9, 1937 UNITED STATES PATENT OFFICE JIG FOR TREATING ORE-BEARING AND LIKE MATERIAL Walter Ruoss, Batu Caves, Federated Malay State of Selangor 2 Claims.

This invention relates to jigs for treating orebearing and like materials and is concerned with jigs of the known type which comprise a sieve, a chamber situated below the sieve and divided by a partition into two hutches, an oscillating vibrator situated in an opening in said partition for producing pulsion and suction alternately in each of the hutches, and means for actuating the vibrator.

One object of this invention is to provide an improved jig of the aforesaid type which is so constructed that wear is reduced to a minimum, and another object is to provide simple and inexpensive means for transforming existing jigs so as to render them more eflicient.

With the foregoing objects in view, theinvention resides in certain novel features of construction hereinafter described and claimed.

Referring to the drawings:

Figure 1 is a side elevation, partly in section,

of one form of jig,

Figure 2 is a cross section on the line 2-2 of Figure 1, and

Figure 3 is a cross section showing how a standard jig may be converted into a jig according to the present invention.

Like reference numerals indicate like parts throughout.

Referring first to the construction shown in Figures 1 and 2, the jig comprises a steel tank It] having a pyramidal bottom II. The tank has midway of its length a transverse wall l2 which divides it into two chambers each of which is divided by a partition l3 into two hutches;

: the four hutches thus formed are indicated by the reference numerals I, II, III and IV.

In each partition 13 a circular opening I4 is provided to receive a double-acting piston l5 constituting the vibrator. The piston is held in the opening M by means of a flexible annulus Hi and clamping rings I1 and 18 of flat iron. The annulus [6 which is preferably made of rubber, is shaped so as to allow for lateral displacement of the piston in both directions. The piston to is preferably as shown in Figure 1 a hollow body formed by two fiat cones of mild steel plate with their rims welded together and a central bush Hi. It will be readily appreciated that such a body, if of suitable dimensions, will float when 50 immersed in water, and can easily be given the correct buoyancy to compensate its own weight, thus relieving the annulus l6 of any undesirable strain.

The pistons are coaxially arranged with their 55 axes all at the same height from the base line,

so that as many units as desired can be assembled to form a jig of two, four or more cells and a common piston rod 20 is provided for operating the pistons I5. The rod 20 passes through the bushes l9 and from one unit into another and 5 outside the tank I0 through stufiing glands 2!. Each piston is held on the piston rod 20 by means of nuts 22 engaging screwthreaded portions of the rod. An eccentric 23, with adjustable stroke, mounted on a bracket fixed to one end wall of 10 the tank [0 imparts reciprocatory movements to the piston rod 20 through a strap 24 and a connecting link 25. The drive for the eccentric, indicated in chain lines in Figure 1, may be by means of belt, chain or other gearing from any 15 convenient prime mover.

The top of the tank H] is arranged to provide an inclined sluice 26 at the bottom of which in each hutch is a grid 27 which supports a sieve 28 held in position by cross bars 29. For treating 20 tin ore, for example, the sieve 28 would receive a bed of hematite 30 of suitable size.

Water is supplied to each of the hutches from a main pipe 3| through two branch conduits each controlled by a cook 32 and having at its outlet 25 into the tank ID, a non-return rubber flap valve 33.

The operation of the jig is as follows.

The mixture of ore-bearing sand and water is fed into the upper inlet end of the sluice 26, i. e. 30 into the left hand end of the sluice as seen in Figure l, and at the same time water is admitted into the hutches through the cocks 32. On rotating the eccentric 23, the rod 20 imparts a reciprocatory motion to the pistons 15. When the 35 rod 20 moves towards the left in Figure 1 pulsion will take place in hutches I and III and the water therein will be displaced, will close the flap valves 33 and will rise through the respective ore beds lifting the sand lying thereon. Simultaneously, 40 suction will be produced in the hutches l1 and IV but as the valves 33 therein will then open and admit a certain amount of water, the action of this suction on the sand will be checked to some extent with the result that heavy particles of ore will sink quickly through the sand and hematite bed while sand of lower specific gravity will be held in suspension and gradually float away towards the outlet end of the sluice. The ore which has passed through the hematite bed and the sieve 28 will sink to the bottom of the hutches and can be withdrawn therefrom through discharge outlets 34.

In a jig provided with two or more vibrators, it is not essential that they shall be of the same size. They may be of different sizes in order to produce difierent pulsion and suction efiects in the different pairs of hutches which is often desirable. Alternatively, the vibrators may be of the same size and be supported by flexible members of diiierent depths which will also give different pulsion and suction effects.

Figure 3 is a cross section showing how a known jig may be converted into a jig according to the present invention. The known jig comprises a hutch the upper part of which is divided by a partition ll to provide a sluice 26 and a plunger compartment 48. A plunger 49 is reciprocated vertically in the compartment 48 from an overhead eccentric 50. It will be seen that in these known jigs a plunger, or vibrator, is required for each hutch and that the sieve 29 extends only halfway across the hutch, the other half of which is occupied by the plunger compartment 48. By dispensing with the plunger 49 and by providing instead thereof the partitions l3 and the plungers l5 of the present invention, the sieve 29 can be extended to the full width of the hutches.

Jigs according to the invention may be used in conjunction with launders by building the jigs with the hematite or the like bed on a level with the floor of the launders at a suitable position, thus combining these two methods of ore recovery.

The invention is not restricted to the specific constructional forms shown on the drawings.

1. In a pulsating jig for treating ore-bearing and like materials, a sieve, a chamber which is closed at the top by the sieve, a transverse partition dividing said chamber into two hutches with an opening in said partition, a piston-vibrator which is mounted in said opening so as to produce pulsion and suction alternately in each of said hutches and. which is hollow and buoyant when immersed in Water, and means for reciprocating the piston-vibrator.

2. In a pulsating jig for treating ore-bearing and like materials, a sieve, a chamber the top of which is closed by the sieve, a transverse partition dividing said chamber into two hutches with an opening in said partition, a hollow and buoyant piston-vibrator in said opening for producing pulsion and suction alternately in each of said hutches, and an actuating rod for said vibrator, which vibrator comprises two conical discs secured together in opposed relationship around their peripheral margins and a central bush whereby the piston-vibrator is mounted on said actuating rod.

WALTER RUOSS.