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Патент USA US2070069

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Feb. 9, 1937.
w_ Ruosé
. 2,070,069
Filed July 17, 19.35
2 Sheets-Sheet 1
Wait» [64.014
Feb. 9, 1937.
Filed July 17, 1935
2 Sheets-Sheet 2
Patented Feb. 9, 1937
Walter Ruoss, Batu Caves, Federated Malay State
of Selangor
Application July 1'7, 1935, Serial No. 31,801. In
Federated Malay States November 26, 1934
2 Claims. (Cl. 209-455)
This invention relates to jigs for treating ore
so that as many units as desired can be assembled
bearing and like materials and is concerned with to form a jig of two, four or more cells and a
jigs of the known type which comprise a sieve, common piston rod 20 is provided for operating
a chamber situated below the sieve and divided the pistons I5. The rod 20 passes through the
5 by a partition into two hutches, an oscillating bushes l9 and from one unit into another and 5
vibrator situated in an opening in said partition outside the tank I0 through stu?ing glands 2!.
for producing pulsion and suction alternately in Each piston is held on the piston rod 20 by means
each of the hutches, and means for actuating the of nuts 22 engaging screwthreaded portions of
the rod. An eccentric 23, with adjustable stroke,
One object of this invention is to provide an mounted on a bracket ?xed to one end wall of 10
improved jig of the aforesaid type which is so the tank [0 imparts reciprocatory movements to
constructed that wear is reduced to a minimum,
the piston rod 20 through a strap 24 and a con
and another object is to provide simple and in
expensive means for transforming existing jigs
necting 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
15 so as to render them more e?icient.
With the foregoing objects in view, the‘inven
tion resides in certain novel features of construc
tion 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
25 standard jig may be converted into a jig accord
ing to the present invention.
Like reference numerals indicate like parts
Referring ?rst to the construction shown in
30 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;
:35 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
40 the opening M by means of a ?exible annulus
Hi and clamping rings I1 and 18 of ?at iron.
The annulus [6 which is preferably made of rub
ber, is shaped so as to allow for lateral displace
ment of the piston in both directions. The piston
to is preferably as shown in Figure 1 a hollow body
formed by two ?at 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 ?oat 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
The pistons are coaxially arranged with their
55 axes all at the same height from the base line,
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 ?ap valve
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 rotat
ing the eccentric 23, the rod 20 imparts a re
ciprocatory 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 45
will sink quickly through the sand and hematite
bed while sand of lower speci?c gravity will be
held in suspension and gradually float away to
wards the outlet end of the sluice. The ore which
has passed through the hematite bed and the 50
sieve 28 will sink to the bottom of the hutches
and can be withdrawn therefrom through dis
charge outlets 34.
In a jig provided with two or more vibrators,
it is not essential that they shall be of the same 55
size. They may be of different sizes in order to
produce di?erent pulsion and suction e?ects in
the different pairs of hutches which is often de
sirable. Alternatively, the vibrators may be of
the same size and be supported by ?exible mem
bers of diiierent depths which will also give dif
ferent 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 par
tition Ill to provide a sluice 26 and a plunger
compartment 48. A plunger 49 is reciprocated
vertically in the compartment 48 from an over
15 head eccentric 50. It will be seen that in these
The invention is not restricted to the speci?c
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 parti
tion 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 10
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
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
and like materials, a sieve, a chamber the top of 15
which is closed by the sieve, a transverse parti
tion dividing said chamber into two hutches with
an opening in said partition, a hollow and buoyant
is occupied by the plunger compartment 48. By
piston-vibrator in said opening for producing
20 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
25 in conjunction with launders by building the jigs
with the hematite or the like bed on a level with
the ?oor of the launders at a suitable position,
thus combining these two methods of ore recovery.
pulsion and suction alternately in each of said 20
hutches, and an actuating rod for said vibrator,
which vibrator comprises two conical discs se
cured together in opposed relationship around
their peripheral margins and a central bush
whereby the piston-vibrator is mounted on said 25
actuating rod.
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