Year: 1887

page_text: Date of Application, 5th Aug., 1887
Complete Left, 11th Oct., 1887
Complete Accepted, 11th Nov., 1887
I NATHAN CLAYDEN of 16 Willes Road Kentish Town in the county of Middlesex
Gentleman do hereby declare the nature of this invention to be as follows :-
:-
The object of this invention is to provide for use an extremely efficient amalgamator
chiefly for the precious metals.
To carry out this object a tank is made to hold the quicksilver of any convenient
size and preferably cylindrical in shape in which tank is centrally supported a vertical
tube which reaches nearly to the bottom of the tank and extends as far above the same
as may be desired which upper end can conveniently be funnel shaped and near the
lower end of the tube are made a series of holes. Centrally in the tube is mounted
on a suitable bearing preferably in or on the bottom of the tank a vertical shaft
supported above in any convenient bracket on which shaft is a continuous Archi-
medean screw the periphery whereof closely approximates to the internal walls of the
tube and also on the shaft immediately below the bottom of the tube is secured an
horizontal disc whereto are fitted arms to carry the series of vertical bars or agitators.
The ore to be treated is fed into the upper end of the tube preferably through a
suitable hopper and when the shaft is revolved by any usual or other appliances the
ore is carried down the tube on and by the Archimedean screw and is forced thereby
out through the holes near the bottom of the tube into the quicksilver tank where it
is disturbed by the revolving agitators until the desired effect has been produced and
the amalgamation is effected when the refuse material can be conveyed or removed
from the tank through any suitable aperture or passage or otherwise. Any suitable
aperture with a door can be made in the proper position to allow of access to the
bottom of the tank. The whole apparatus can be mounted on any suitable framing.
Dated this 5th day. I Anonat 1007

page_text: I NATHAN CLAYDEN of 16 Willes Road Kentish Town in the county of Middlesex
Gentleman 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 :-
The object of this invention is to provide an extremely efficient amalgamator for
use chiefly for and with the precious metals.
In the accompanying drawing I have shewn a very convenient form and style of
this amalgamator of which Figure 1 is an elevation and Figure 2 is a vertical section.
A tank A is made of any convenient size and preferably cylindrical in shape in
which is held the quicksilver and in which the ore is to be treated and in this tank A
is centrally supported a vertical tube B of the desired diameter which tube B reaches
nearly to the bottom of the tank A and extends as far above the same as may be
necessary in cach particular case and near or at the lower end of the tube B are made
a series of holes C. Centrally in the tube B is mounted on a suitable bearing prefer-
ably in or on the bottom of the tank A as shewn a vertical shaft D supported above in
any convenient bracket secured on the framing of the machine or by other usual and
suitable appliance and on this shaft D is a continuous Archimedean screw E the
periphery whereof closely approximates to and properly fits the internal walls of the
tube B which screw E extends from the bottom of the tube B or thereabouts preferably
to the top of the same as shewn in the drawing. Immediately below the bottom of
the tube B an horizontal disc F is secured preferably on the same shaft.D to which
disc F one two or more arms G are fitted to carry the series of vertical bars or
agitators H. A suitable hopper I can conveniently be fitted to lead the material to be
treated into the funnel shaped mouth K of the tube B and a discharge pipe L is formed
and fitted at a suitable height in and to the tank A wherethrough the treated material
can be discharged and an aperture fitted with a door M is made in the proper position
therein to allow of access to the bottom of the tank A.
The action of this apparatus is as follows. The shaft D is caused to revolve at the
desired speed by hand or other power through any suitable gearing that shewn in the
drawing being very convenient and the ore or material being duly pulverized and
mixed with water in the usual manner or otherwise treated as may be desirable is fed
through the hopper I into the funnel shaped mouth K of the tube B wherein this
material is caught and retained by the screw E and is carried thereon and thereby
down the tube B until it is forced out through the holes C into the quicksilver tank Å
where it is disturbed by the revolving agitators H until the desired effect has been
produced and the amalgamation is effected and as more of the material is continually

page_text: being forced by the screw E into the lower part of the tank A the level of the treated
material gradually rises until the material can pass away through the discharge pipe L.
In this apparatus therefore a steady continuous stream of the material in such volume.
or quantity as may be desired is alway being forced into the lower part of the tank
there to be treated and then is discharged from the upper part of the tank.
When a sufficient quantity of the material has been so passed through this apparatus
the resultant amalgam can be collected and removed through the aperture M or
otherwise.
It may sometimes be desirable that the agitators should be revolved at a speed
different to that of the screw in which case the shaft D that carries the screw E would
be hollow and another shaft would pass down therethrough which central shaft would
carry the agitators Has hereinbefore described and by any proper and usual gearing
these two shafts could be revolved at the desired differing speeds.
Having now particularly described and ascertained the nature of this said invention
and in what manner the same is to be performed I declare that what I claim is
1. The combination with the tank A containing the revolving agitators H of the
central tube B with the holes and containing the revolving shaft D carrying the
continuous screw E substantially as and for the purpose hereinbefore described and
declared.
2. The arrangement and combination of parts and appliances constituting the
improved amalgamator substantially as hereinbefore described and shewn in the
accompanying drawing.