Year: 1887

page_text: Date of Application, 29th Apr., 1887
Complete Left, 13th Sept., 1887
Complete Accepted, 28th Oct., 1887
WILLIAM BEVITT of Hazelhurst Romford Essex Engineer do hereby declare the
nature of this invention to be as follows:-
The machine consists of a table formed with a series of steps or troughs in which is
deposited mercury which is caught up by rollers formed with longitudinal buckets
into which also flows pulverized gold-ore or tailings which as the rollers revolve comes
in contact with the mercury caught in the longitudinal buckets. After passing over
the first roller the ore and mercury are deposited on the table when the mercury runs
back into the trough from which it was caught up and the tailings flow on to the
second roller being caught up and subjected to the same process as operated by
the first roller. This process is continued by a series of rollers until the largest
amount of gold that it is possible to catch is amalgamated with the mercury.
At the delivery end of the table is a mercury-trap which is kept constantly oscillating
to prevent the tailings packing and choaking the trap, and also to concentrate and
catch any particles of mercury or amalgam which may have escaped from the table.
A rake suspended from the frame-work over the table is placed behind each roller and
kept in continuous motion to prevent the ore or tailings packing on the table.
The carriages that support the rollers are so constructed that the whole of the rollers
can be lifted simultaneously by means of worms and wheels or chains and wheels thus
giving easier access to the amalgam troughs for the purpose of cleaning up the tables.
Motion is given to the rollers by an endless chain or band.
Having now described the nature of my said invention and in what manner the
same is to be performed, I declare that what I claim is,
1st. That the whole body of the ore is brought in direct contact with the mercury
in a manner hitherto unattempted.

page_text: 2nd. The ore can be kept in contact and undergo a mixing process for any
desired time.
3rd. That float gold cannot escape from the table without coming in contact with
the mercury.
4th. That the mercury not being subjected to a rubbing or grinding process is not
liable to be lost in small particles along with the tailings.
5th. The principle and application of the machine being so simple it can be worked
by unskilled labour and is not liable to get out of order.
Dated this Twenty ninth day of April 1887.

page_text: Amalgamating Apparatus.
WILLIAM BEVITT Hazelhurst Romford in the County of Essex, Engineer do
hereby declare the nature of this invention and in what manuer 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 extract all the small particles of gold from
pulverized ore, and especially that which is known by the name of float-gold.
The machine consists of a table formed with a series of steps or troughs, in which
is deposited mercury which is caught up by rollers formed with longitudinal buckets
constructed by preference of open gas tubes into which also flows pulverized gold-ore or
"tailings" from the battery or pulverizor which as the rollers revolve comes in contact
with the mercury caught in the longitudinal buckets. After being carried over the
first roller the ore and mercury are deposited on the table from the rollers or buckets
when the mercury runs back into the trough from which it was caught up, and the
tailings "flow on to the second roller being caught up and subjected to the same
process as operated by the first roller. This process is continued by a series of rollers
until the largest amount of gold that it is possible to catch is amalgamated with the
"
mercury.
At the delivery end of the table is a mercury-trap which is kept constantly oscillating
to prevent the "tailings" packing and choking the trap, and also to concentrate
and catch any particles of mercury or amalgam which may have escaped from the
table. The mercury-trap receives its motion from the crank shaft.
A rake suspended from the frame-work over the table is placed behind each roller,
and kept in continuous motion by the crank shaft to prevent the ore or tailings
packing on the table. The carriages that support the rollers rest on chairs and are
so constructed that the whole of the rollers can be lifted simultaneously by means of
worms & wheels or chain and wheels, thus giving easier access to the amalgam-
troughs for the purpose of cleaning up the tables. The lower end of each carriage
rests on a stud which is secured to the frame working on the chain-pullies which are
fixed to the ends of the rollers. Motion is given to the roilers by an endless chain
or band.

page_text: a, Part plan of Battery. b, Part elevation of Battery. c, Battery bed. d, Rollers.
e, Chain-pullies. f, Carriages for rollers. g, Rake. h, Mercury-trap. i, Driving-
pulley. k, Worm-shaft for raising rollers. 1, Chair or support for carriages.
m, Connecting rod. Pr Frame for machine. 9, Crank shaft. r, Suspending rods
-for rakes.
Having now described the nature of my said invention, and in what manner the
same is to be performed, I declare that what I claim is
1st. That the whole body of the ore is brought in direct contact with the mercury.
in a manner hitherto unattempted.
2nd. The ore can be kept in contact and undergo a mixing process for any
desired time.
3rd. That float-gold cannot escape from the table without coming in contact with
the mercury.
4th. That the mercury not being subject to a rubbing or grinding process is not
liable to be lost in small particles along with the tailings.
5th. The principle and application of the machine being so simple it can be worked
by unskilled labour, and is not liable to get out of order.
Dated this Thirteenth day of September 1887.