IMPROVEMENTS IN MACHINERY FOR CRUSHING, GRINDING, AND TRITURATING STONE, MINERALS, ORES, AND QUARTZ; ALSO FOR WASHING AND SEPARATING METALS FROM ORES; AND FOR WASHING, SEPERATING, AND AMALGAMATING GOLD FROM QUARTZ
Year: 1871

page_text: PROVISIONAL SPECIFICATION left by George Henry Goodman at the
Office of the Commissioners of Patents, with his Petition, on the
11th February 1871.
I, GEORGE HENBY GOODMAN, of No. 53, Penrose Street, in the Parish
of Saint Mary, Newington, in the County of Surrey, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN MACHINERY FOR
CRUSHING, GRINDING, AND TRITURATING STONE, MINERALS, ORES, AND QUARTZ;
ALSO FOR WASHING AND SEPARATING METALS FROM ORES; AND FOR WASHING,
SEPERATING, AND AMALGAMATING GOLD FROM QUARTZ," to be as follows (that
is to say):
This Invention has reference to improvements in machinery or
apparatus for crushing, grinding, and triturating stone, minerals, ores,
and quartz; also for washing and separating metals from ores; and for
washing, separating, and amalgamating gold from quartz; and relates,
firstly, to that portion of such machinery or apparatus as is used for the
breaking, crushing, or grinding operations, and which may be used as
a separate machine for performing such operations on any suitable
substance where the other operations, such as separating and amalga-

page_text: mating are not required, as, for example, the breaking of stones for
roads.
The Invention, as relating to this part of the apparatus consists
essentially in a horizontal ram or crusher constructed and actuated in
the manner herein-after described in combination with a fixed plate.
The acting face of this ram is curved in a vertical plane, and serrated
obliquely, whilst the acting face of the said fixed plate is correspond-
ingly curved, and is also serrated obliquely, but in an opposite direction
to the serrations on the acting face of the said ram, so that when the
two acting faces are in position the serrations of the one will cross those
of the other. These faces, between which the substance to be crushed
or broken is introduced, are also made convergent downwards, so that
the opening between them at the bottom is only sufficiently large to
allow the fragments of the crushed material to pass through after they
have been reduced to the required size. The necessary motion for the
crushing and grinding operation is imparted to the said ram by means
of an eccentric, which passes horizontally through the body thereof and
parallel to the acting face, with bearings for its trunnions in the sides
or cheeks of the machine. The said eccentric is actuated by any
suitable means, and as it rotates imparts a reciprocatory and semi-
rotary motion to the said ram, which as it advances towards and recedes
from the said fixed plate at each rotation of the eccentric performes a
distinct crushing and grinding action on the substance between them
being reduced, which falling down by its own gravity at each receding
motion of the ram is gradually reduced small enough to pass through
the opening at the bottom. The said ram may be maintained in proper
acting position by means of any suitable guide, and when desired may
be made with two acting faces, one on each side of the eccentric,
with a fixed plate opposite each, so that both its forward and backward
motion may be utilized for crushing.
The second part of this Invention relates to improvements in the
construction of that part of the machinery or apparatus for effecting
the triturating process, and also of the apparatus for washing and
separating the metals from the ores, and for washing and amalgamating
the gold from the quartz.
My improvements in the discs of the triturating apparatus consist
in nearly filling up the furrows by moveable blocks of metal or other
suitable material, so that as the lands are worn down by the process of

page_text: This
grinding the said blocks may be let further in to suit them.
method has several advantages, as it enables discs to be used with very
deep furrows, thus ensuring their lasting a long time, whilst it overcomes
the objection to deep furrows which, as heretofore constructed, allow
much of the material being reduced to escape without being ground
sufficiently fine. The material as it is ground from these discs in an
impalpable powder falls into the amalgamating dish which surrounds
them, and which is kept partly filled with amalgam or quicksilver, and
also flowing over with water; and in order that the powdered substance
may be thoroughly mixed with the amalgam or quicksilver they are
constantly stirred together by means of an arm or router which travels
round with the revolving disc, the mud and shingle or tailings flowing
over with the water, if preferred, into a sluice. The substance falling
from the crushing or grinding portion of the apparatus, as above
described, falls on to a rocking sieve with a shoot so arranged that all
the material which falls through the sieve, and is therefore sufficiently
fine, falls into the amalgamating dish, whilst all that which will not
pass through the sieve is conveyed by another shoot to a hopper com-
municating with the triturating dises; but in order to reduce any pieces
that may be too large for admittance between the said discs this coarse
substance is made to pass through between two horizontal conical rings,
the one working beneath and within the other, the top one revolving
with the upper of the said triturating discs, whilst the bottom one is
fixed to the lower and stationary one. The opening between the acting
surfaces of these rings, which are made moveable that they may be
replaced when worn, and which are serrated, is wider at the top where
the substance is introduced between them than it is at the bottom
where the substance is ground out fine, and which is on a level with
the rubbing surfaces of the triturating discs, so that they may take up
the said powdered substance and finish the process of triturating, and
expel it into the amalgamating dish to be treated as before described,
thus forming in one combined machine efficient means to crush,
grind, triturate, wash, and separate minerals from orcs, and wash and
amalgamate gold from quartz.