An Improved Pulverizer and Amalgamator.
Year: 1893

page_text: Date of Application, 26th Apr., 1893
Complete Specification Left, 26th Jan., 1894—Accepted, 24th Mar., 1894
PROVISIONAL SPECIFICATION.
An Improved Pulverizer and Amalgamator.
WE, JOHN HENRY HOLMAN and THOMAS HENRY TREGONING, both of
Camborne, in the County of Cornwall, Engineers, do hereby declare the nature of
this invention to be as follows:-
Our invention relates to an improved apparatus for pulverizing and amalgamating
ores.
In carrying out our invention we provide a perforated or slotted ring adapted to
be rotated between and in contact with upper and lower shoes, the said ring being
driven from a central shaft by means of arms carried by the said shaft. The lower
shoes are fixed in recesses in the bottom of the pan of the apparatus at suitable
distances apart and have bevelled or inclined edges and the upper shoes, which
have also bevelled or inclined edges and are also placed at suitable distances apart
are carried by the sides of the pan in such a manner that they can move vertically
but cannot rotate with the rotating ring. Arrangements are also made for lowering
and raising these upper shoes. In the bottom of the pan is an aperture through
which the amalgam can be discharged and near the top of the pan is a pipe through
which the water can be discharged, the said pipe extending towards the centre of
the apparatus and being adjustable as to height according to the fineness of stuff
desired.
The framing carrying the central shaft and driving gear is somewhat in the form
of double X, thus XX, and carries a lever by means of which the shaft may be
raised and lowered.
The apparatus may be used with or without a cover.
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COMPLETE SPECIFICATION.
`An Improved Pulverizer and Amalgamator.
We, JOHN HENRY HOLMAN and THOMAS HENRY TREGONING, both of
Camborne, in the County of Cornwall, Engineers, 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 :-
Our invention relates to an improved apparatus for pulverizing and amalgamating
ores.
In carrying out our invention we provide a perforated or slotted ring adapted to
be rotated between upper and lower blocks, the said ring being driven from a
central shaft by means of arms carried up the said shaft. The blocks which form
shoes are fixed in recesses in the bottom of the pan of the apparatus at suitable
distances apart and have bevelled or inclined edges. The upper blocks which may
have bevelled or inclined edges are also placed at suitable distances apart; and are
carried by the sides of the pan in such a manner that they can move vertically but
cannot rotate with the rotating ring. Arrangements are also made for lowering
מ

page_text: and raising these upper blocks. In the bottom of the pan is an aperture through
which the amalgam can be discharged and near the top of the pan is a pipe through
which the water can be discharged, the said pipe extending towards the centre of
the apparatus and being adjustable as to height according to the fineness of stuff
desired.
The framing carrying the central shaft and driving gear is somewhat in the form
of double X, thus XX, and carries a lever by means of which the shaft may be
raised and lowered.
The apparatus may be used with or without a cover.
To enable our invention to be fully understood we will. describe the same by
reference to the accompanying drawing, in which :-
Figure 1 is a plan of our apparatus certain parts being broken away; and,
Figure 2 is a sectional elevation: and
Figures 3 and 4 are side and front elevations respectively, drawn to an enlarged
scale, illustrating the arrangement of the adjustable discharge pipe.
a is the pan of the apparatus and is the double X frame, bolted to flanges c, c
on the pan, and carrying the central shaft d and the driving gearing e. f is the
rotating ring, 9, 9 the lower blocks forming shoes and h, h the upper blocks. i, i are
perforations or openings formed in the said ring for allowing the material, to be
pulverized to enter between the shoes and the ring.
The
The ring is driven from the shaft d through the medium of the boss j, having
arms k, k bolted to lugs 1, 1 formed upon the inner periphery of the said rim.
The blocks 9, and h, h are bevelled from the bottom to the top and from the top
to the bottom respectively in the direction in which the ring f rotates.
blocks 9.9
are held in recesses formed in the bottom of the pan and the blocks h,
are provided with dove-tailed extensions m, m sliding in dove-tailed vertical
grooves n, n in the walls of the pan a, whereby each of the said blocks , h can be
adjusted by a screw at a short distance above the ring the said blocks serving to
steady the action of the water and to stop the sand at times; p is the pipe for
regulating the height of the liquid in the pan and for discharging the same the inlet
opening of the pipe being arranged near the centre of the apparatus as the water at
this point is comparatively still and facilitates discharge. This pipe p is secured to
a flange p' which is curved to the arc of a circle and fits against a correspondingly
curved seat p fixed to the pan a. The horizontal position of the pipe corresponds
with the lowest water level in the pan and it will be obvious that by more or less
raising the flange p¹ upon its seat (for instance to the position indicated by the
dotted lines in Figure 3) the depth of water in the pan will be increased to a
greater or lesser extent. ², pare screws passing through slots p*, p in the flange
and serving to secure the flange and pipe in any position in which they are placed.
is the aperture through which the amalgam (when used) and water can be drawn
off. r is the lever arranged in conjunction with the central shaft d and serving to
raise and lower the same with the ring f, the said lever being pivotted to the
frame bat and arranged in conjunction with a rack t for adjusting the height of
the said shaft.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
- claim is :-
1. An improved pulverizing and amalgamating apparatus wherein a perforated
`or slotted ring is adapted to be rotated between upper and lower blocks constructed
and arranged substantially as described.
2. In an ore pulverizing and amalgamating apparatus the arrangement of a pipe
for discharging the water, having its inlet opening near the centre of the apparatus
substantially as described.
3. In an ore pulverizing and amalgamating apparatus the construction of the
frame for carrying the central shaft and gearing, substantially as described.

page_text: 4. The manufacture and use of the improved ore pulverizing and amalgamating
apparatus hereinbefore described and illustrated in the accompanying drawing.
Dated the 26th day of January 1894.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.