An Improved Apparatus for Separating Ores from the Associated Gangue.
Year: 1888

page_text: Date of Application, 5th Oct., 1888
Complete Specification Left, 5th July, 1889-Accepted, 10th Aug., 1889
PROVISIONAL SPECIFICATION.
An Improved Apparatus for Separating Ores from the Associated
Gangue.
I, JAMES HARRIS-JAMES of Grampound Road in the County of Cornwall, Mining
Engineer, do hereby declare the nature of this invention to be as follows:-
A conical Trough (A) having at its higher end a transverse spout or channel (B)
fed by a second spout or channel (C).
At the lower end of the Trough (A) a Box or Trough (D) is placed, at or near the
top of which a Sieve or Screen (E) is fixed to cover the whole of the same.
Leading from the bottom of the Trough or Box (D) is a spout or channel (F)
communicating with a Separator (G).
This Separator (G) is internally in the form of an inverted pyramid and has an
outlet or opening on one side close to the bottom, which outlet can be closed or
opened as required by the slide or valve (H).
An overflow channel or outlet (J) leading into a Spout, is also formed at or near
the top of one of the sides of the Separator (G).
The action of this Apparatus is as follows-
The Ore and accompanying gangue having been reduced to a finely pulvurent
state, a stream of water is directed from the Spout (C) along the transverse Spout (B)
and through the holes in the side of the same into the Trough (A) which is kept
charged with the material to be separated.
The stream of water flowing over this material gradually carries off the same in a
state of suspension, over the Sieve or Screen (E) where any portions too large aro
arrested into the Box or Trough (D) and from thence along the channel (F) into the
Separator (G)-See Drawings Figs. 1. 2. and 3.
The outlet Valve (H) being opened to such an extent as may be necessary but not
so as to carry off all the inflowing water with the ore and gangue in suspension. The
Ore, by reason of its greater specific gravity falls rapidly and continuously towards
the bottom of the Separator and passes out from the same in the current of water
flowing through the valve (H) whilst the Gangue being of less specific gravity has
not time to settle before it is carried off by the remainder of the inflowing current,
along the overflow channel (J) the separation thus being automatically completed.
Having now declared the nature of my invention I claim the whole arrangement
and apparatus as novel.
T1 21: ALL
11000
An Improved Apparatus for Separating Ores from the Associated
Gangue..
I, JAMES HARRIS-JAMES of Grampound Road in the County of Cornwall, Mining
Engineer, do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement :-
A conical Trough (A) as shewn on the Drawings left with the Provisional
Specification having at its higher end a transverse Spout or Channel (B), fed by a
second spout or channel (C), is formed of wood or other suitable materials.
At the lower end of the Trough (A) a Box or Trough (D) is placed, at or near the
top of which a sieve or screen (E) is fixed to cover the whole of the same.

page_text: Leading from the bottom of the Trough or Box (D) is a Spout or Channel (F)
communicating with the separator (G).
This Separator (G) is internally in the form of an inverted pyramid and has an
outlet or opening on one side close to the bottom which outlet can be closed or opened
as required, by the slide or valve.(H).
An overflow channel or outlet (J) leading into a spout, is also formed at or near
the top of one of the sides of the Separator (G).
The action of the apparatus is as follows-viz. :—
The Ore and accompanying Gangue having been reduced to a finely pulvurent
state, a stream of water is directed from the Spout (C) along the transverse
Spout (B) and through the holes in the side of the same into the Trough (A) which
is kept charged with the materials to be separated. The stream of water flowing
over this material gradually carries off the same in a state of suspension into the
Separator (G) which is also full of water. The Ore by reason of its greater specific
gravity falls rapidly and continuously towards the bottom of the Separator and
passes out from the same with the current of water flowing through the slide or
valve (H) whilst the Gangue, being of less specific gravity, has not time to settle
before it is carried off by the remainder of the outflowing current along the overflow
channel (J) the separation of the Ore from the Gangue thus being automatically
completed.
Having now declared the nature of my Invention I claim the whole arrangement
and apparatus as novel.
Dated this 3rd day of July 1889.
JAMES HARRIS-JAMES.