Improvements in the Method of Extracting Gold from Gold Ores, Quartz, and Auriferous Alluvials, and Collecting and Retaining Float Gold.
Year: 1894

page_text: Date of Application, 18th July, 1894
Complete Specification Left, 11th Apr. 1895-Accepted, 18th July, 1895
PROVISIONAL SPECIFICATION.
Improvements in the Method of Extracting Gold from Gold Ores,
Quartz, and Auriferous Alluvials, and Collecting and Retaining
Float Gold.
HENRY CHARLES BARKER of No. 8 Union Court Old Broad Street in the
City of London Solicitor and RICILARD PEARSON of No. 154 Gresham House
Old Broad Street aforesaid Mining Agent do hereby declare the nature of this
invention to be as follows:-
This invention relates to the method of amalgamation by means of mercury and
mercury and copper plates fixed in a tank or tanks which are connected together
by syphons arranged so as to collect what is know as float gold.
As soon as the pulp or.crushed ore or alluvial is washed through the screen fixed
to the battery box it is received in a tank on the bottom of which is a layer of
mercury which absorbes some of the heavier particles of gold, this tank is connected
with a lower one by means of a syphon of suitable size which takes over all the
residue pulp, gold, and float gold to lower tank the bottom of which is covered
with mercury to a convenient depth. The syphon inlet to tank is near bottom and
partly in the mercury, a few inches above the mercury is placed an amalgamated
copper plate, fixed to the three sides of the tank nearest the inlet with a space of a
few inches at the end furthest from the inlet, placed above the last mentioned plate
is another amalgamated copper plate with smaller amalgamated plates attached to
the underside thereof which second plate is fixed to the three sides of the tank and
having a space of a few inches at the end nearest the inlet; any number of such
plates may be used or only one as the occasion may require, from this last mentioned
tank the residue of the pulp, gold, and float gold may be carried over to any
number of tanks of similar description and arranged as above by syphons. In the
above arrangement all float gold must come in contact with the mercury or such
amalgated plates and be collected or absorbed.
Dated this 18th day of July 1894
HENRY CHAS. BARKER.
RICHARD PEARSON.
Improvements in the Method of Extracting Gold from Gold Ores,
Quartz, and Auriferous Alluvials, and Collecting and Retaining
Float Gold.
HENRY CHARLES BARKER of No. 8 Union Court Old Broad Street in the
City of London Solicitor and RICHARD PEARSON of No. 154 Gresham House
Old Broad Street aforesaid Mining Agent 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 :-
This invention relates to the method of amalgamation by means of mercury and
mercury and copper plates fixed in a tank or tanks which are connected together
by syphons arranged so as to collect what is known as float gold.

page_text: As soon as the pulp or crushed ore or alluvial is washed through the screen fixed
to the battery box of the ordinary mining stamps it is received in a tank (A) on
the bottom of which is a layer of mercury (E) which absorbs some of the heavier
particles of gold, this tank is connected with a lower one by means of a syphon (B)
of suitable size which takes over all the residue, pulp, gold and float gold to the
lower tank (C) the bottom of which is covered with mercury (E) to a convenient
depth. The syphon inlet to the tank is near the bottom and partly in the mercury.
A few inches above the mercury is placed an amalgamated copper plate (F) fixed
to three sides of the tank nearest the inlet with a space of a few inches at the
eud furthest from the inlet,. placed above the last mentioned plate is another
amalgamated copper plate with amalgamated plates (G, H) attached 'to the under-
side thereof which second plate is fixed to the three sides of the tank and having a
space of a few inches at the end nearest the inlet.. Any number of such plates may
be used or only one as the occasion may require; from the last mentioned tauk the
residue of pulp, gold and float gold may be carried over to any number of tanks of
similar description and arranged as above by syphons (D).
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is
1. That by the above means all the gold whether float or otherwise contained
in the pulp, or crushed ore, or alluvial is brought into direct contact with the
mercury or such amalgamated plates and is thereby collected, absorbed by the
mercury.
Dated this Tenth day of April 1895
HENRY CHAS. BARKER.
RICHARD PEARSON.