Improvements in Apparatus for the Mechanical Treatment of Ores.
Year: 1891

page_text: Date of Application, 1st Apr., 1891
Complete Specification Left, 28th Dec., 1891-Accepted, 30th Jan., 1892
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for the Mechanical Treatment of Ores.
We, TONY JACOMETY and HENRI LENICQUE, both of 46, Rue de la Victoire,
Paris, France, Engineers, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improved apparatus for the mechanical treatment
of ores.
The rotary tables hitherto employed for the treatment of ores have been made
either of wood or metal but these materials do not afford a surface suitable for the
treatment of slimes, the wood tables being too porous, liable to warp and get out of
shape, and the surface becoming soft and fluffy, whilst cast iron tables are too heavy.
and do not afford sufficient adhesion to prevent the slipping of the metalliferous.
particles and are also subject to vibrations which neutralize the action. Moreover,
the tables were driven by toothed gearing which caused objectionable vibration;
the apparatus for distributing the slimes to be enriched had no means provided for
regulating the supply; and the jet pipes were not so arranged as to separate
distinctly the several products.
The object of the present invention is to obviate these objections and to provide
a system of rotating table with a progressive washing action by the construction of
a rotary table of a light metal framework with a table of wood covered with india-
rubber, gutta-percha, leather, woven or felted fabric, linoleum, etc. With the
construction of table above referred to is combined a system of transmission of
motion by means of worm gear whereby all vibration prevented, a progressive
washing, and a suitably regulated supply.
Our invention is illustrated in the accompanying drawings, forming part of this
Specification; in which Figure 1 represents a cross-section, and Figure 2 a plan,
of the table.
The table is constructed of a slightly coned surface a with a smooth covering of
india rubber or other equivalent substance. This conical table may have either a
convex or concave lateral surface according to the nature of the slimes to be treated.
When the lateral surface is convex, as in the example shewn, the slimes suitably
diluted are directed towards a point of the inner circumference of the table by the
distributing spout b, the outflow from which may be regulated. The table is
constructed of a light iron framework boarded over, upon which is applied a sheet
of rubber c. It is supported upon a central cast iron ring a. The spout is a
slightly inclined surface of triangular form upon which is fixed a series of small
lozenge-shaped blocks d, disposed in two lines extending from the extremities of its
base and meeting in a point near its summit, each block being capable of turning on
its axis for the purpose of varying the width of the passages between the blocks.
The spout is edged with a notched metal band e serving to break up the flow of the
slimes and reduce their velocity and also if necessary limit the breadth of the
flowing stream by shutting off a certain number of channels on the right and left.
To prevent vibration, rotary motion is imparted to the table a by means of a worm f
gearing with a worm wheel g keyed on the spindle h. The matters fed on to the
table are caused to pass beneath the water jets discharged from pipes which
sweep the poor stuff into a circular gutter j beneath the edge of the table which is
divided by means of removable partitions into as many compartments as are
required to receive the various products consisting of the poor, mixed, and rich,
portions of the product. Apertures in the bottom of the gutter communicate
with pipes by which the products are conducted into collecting tanks m, the poor

page_text: stuff being carried away by the water current into the first compartment of the
gutter, and, the table continuing its rotation, there remains on its coned surface
several zones of different degrees of richness, those near the lower edge being mixed
and of more or less poor quality, while the zone of rich matters occupies the higher
part of the conical surface of, the table. The jet pipes are provided with cocks o
for regulating the flow whereby the poorer mixed products are first carried away,
then the richer mixed products, and lastly the completely purified and concentrated
rich products.
In this manner, the table is washed perfectly clean in readiness for receiving a
fresh supply from the distributing spout after making a complete revolution. The
speed of rotation would vary, according to the nature of the slines to be treated,
between two and three revolutions per minute. The jet pipes are arranged in
successive echelons, as shewn, whereby the products are separated into as many
grades as may be required. When the ore is of such complex constitution as to
necessitate a fresh treatment upon a second, and even a third, revolving table, the
apparatus may be constructed of two or more similar tables superposed one above
the other upon the same vertical axis, the products from the upper tables being
distributed upon the tables below.
Doted thin 1
1 1001
COMPLETE SPECIFICATION.
Improvements in Apparatus for the Mechanical Treatment of Ores.
I. TONY JACOMETY and HENRI LEXICQUE, both of 46 Rue de la Victoire,
Paris, France, Engineers, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
This invention relates to improved apparatus for the mechanical treatment of
finely crushed ores.
The rotary tables hitherto employed for the treatment of ores have been made
either of wood or metal or cement, but these materials do not afford a surface
suitable for the treatment of slimes the wood tables being too porous, liable to warp
and get out of shape and the surface becoming soft and fluffy whilst cast iron tables
are too heavy and do not afford sufficient adhesion to prevent the slipping of the
metalliferous particles and are also subject to vibrations which neutralize the action.
Moreover, the tables were driven by toothed gearing which caused objectionable
vibration the apparatus for distributing the slimes to be enriched had no means
provided for regulating the supply and the jet pipes were not so arranged as to
separate distinctly the several products.
The object of the present invention is to obviate these objections and to provide
a system of rotating table with a progressive washing action by the construction of
a rotary table of a light metal.framework with a table of wood covered with india-
rubber, gutta-percha, leather woven or felted fabric, linoleum, etc. With the
construction of table above referred to is combined a system of transmission of
motion by means of worm gear whereby all vibration is prevented, a progressive
washing, and a suitably regulated supply.
Our invention is illustrated in the drawings accompanying our. Provisional
Specification in which Figure 1 represents a cross-section and Figure 2 a plan of
the apparatus.
The table is constructed of a slightly coned surface a with a smooth covering of
india-rubber or other equivalent substance. This conical table may have either a

page_text: convex or concave lateral surface according to the nature of the slimes to be treated.
When the lateral surface is convex as in the example shewn, the slimes suitably
diluted are directed towards a point of the inner circumference of the table by the
distributing spout the outflow from which may be regulated. The table is
constructed of a light iron framework boarded over, upon which is applied a sheet
of rubber c. It is supported upon a central cast iron ring c. The spout is a
slightly-inclined surface of triangular form upon which is fixed a series of small
lozenge-shaped blocks d disposed in two lines extending from the extremities of its
base and meeting in a point near its summit, each block being capable of turning on
its axis for the purpose of varying the width of the passages between the blocks.
The spout is edged with a notched metal band e serving to break up the flow of the
slimes and reduce their velocity and also if necessary limit the breadth of the flowing
stream by shutting off a certain number of channels on the right and left. To
prevent vibration, rotary motion is imparted to the table a by means of a worm f
gearing with a worm wheel keyed on the spindle h. The matters fed on to the
table are caused to pass beneath the water jets discharged from pipes which sweep
the poor stuff into a circular gutter ; beneath the edge of the table which gutter is
divided by means of removable partitions & into as many compartments as are
required to receive the various products consisting of the poor, mixed, and rich
portions of the product. Apertures in the bottom of the gutter communicate with
pipes by which the products are conducted into collecting tanks m. The poor stuff
is carried away by the water current into the first compartment of the gutter and the
table continuing its rotation there remains on its coned surface several zones of
matters of different degrees of richness, those near the lower edge being mixed and
of more or less poor quality while the zone of rich matters occupies the higher part
of the conical surface of the table.
The jet pipes n are provided with cocks o for regulating the flow whereby the
poorer mixed products are first carried away, then the richer mixed products, and
lastly the completely purified and concentrated rich products. In this manner the
table is washed perfectly clean in readiness for receiving a fresh supply from the
distributing spout after making a complete revolution. The speed of rotation would
vary according to the nature of the slimes to be treated, between two and three
revolutions per minute. The jet pipes are arranged in successive echelons as shewn,
whereby the products are separated into as many grades as may be required.
When the ore is of such complex constitution as to necessitate a fresh treatment
upon a second and even a third revolving table, the apparatus may be constructed
of two or more similar tables superposed one above the other upon the same vertical
axis, the products from the upper tables being distributed upon the table below.
When the rotary table is used for treating auriferous, argentiferous, or other
amalgamable ores, amalgamated plates are applied upon the upper zone of the
conical table by which the precious metals or their amalgams passing over the same
are retained whilst the lower zone covered as before described, with caoutchouc or
other equivalent substance serves to retain and concentrate the particles of gold or
silver which may have escaped amalgamation. In certain cases, the whole surface
of the table may be covered with amalgamated plates. By this means the
apparatus is adapted to the treatment of auriferous or other ores or metals capable
of being amalgamated.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:-
The herein described apparatus for the mechanical treatment of ores, consisting
in the combination of a convexly or concavely conical rotary table of wood covered
with caoutchouc or other suitable material, including amalgamated plates, with a
stationary distributor delivering to the table a stream of slimes of regulated breadth
and with stationary washing jet pipes arranged in successive series of echelons

page_text: whereby to separate the washed matters in as many different grades as may
be required, substantially as herein described and illustrated in the drawings
annexed.
Dated this 20th dor of Dasambon 1001
T. JACOMETY.
H. LENICQUE.
By A. M. & Wm. Clark,
Chancery Lane, London, Chartered Patent Agents.
T. JACOMÉTY.
H. LENICQUE.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.