MACHINERY FOR STAMPING, Onse, CRUSHING, WASHING, AND AMALGAMATING GOLD AND OTHER ORES
Year: 1854

page_text: LETTERS PATENT to William Littell Tizard, of Aldgate, in the City of
London, Engineer, for the Invention of "MACHINERY FOR STAMPING,
Onse"
PROVISIONAL SPECIFICATION left by the said William Littell Tizard
at the Office of the Commissioners of Patents, with his Petition, on the
10th January 1854.
I, WILLIAM LITTELL TIZARD, of Aldgate, in the City of London, Engineer,
do hereby declare the nature of the said Invention for "MACHINERY FOR STAMP-
ING, CRUSHING, WASHING, AND AMALGAMATING GOLD AND OTHER ORES," to be as
follows:-
The novel and peculiar mechanical features of this machine consist of,-
First, two or more corrugated, fluted, or serrated hollow rings are mounted
on a horizontal hollow axle, to which rotary motion is communicated by
means of steam, water, horse, or other suitable power. The axle has
cams. or lugs, or other projections for lifting stampers which break large
pieces of quartz, &c. The base plate on which the stampers fall is per-
forated for the admission of broken ore of limited dimensions, and the
latter is driven through a pipe and delivered into the pulverizing machine by
the stampers, there to be pulverized, washed, and amalgamated. The axle
need not go directly through the centre of the cylindrical rings, but may be
put excentrically, by which a varied or intermittent motion would be given to
the pulverizing balls.

page_text: Second, the crushing balls in the pulverizing machine are cast hollow and
corrugated or otherwise, to correspond with the interior form of the hollow
ring in which they run. The specific gravity of the balls is increased by about
33 per cent. by being filled with lead. The filling of these balls might be
deferred until they arrive at their ultimate destination.
Third, the balls have each an axle in the centre of one end or side, and an
axle or little out of the centre on the other.
Fourth, these balls are connected a few inches apart by means of their axles
and two connecting rods, so that when the cylindrical rings revolve, the balls
run in a contrary direction to and fro, and at the same time their excentric
axles produce the much desired (but never heretofore attained) spiral or rubbing
action.
Fifth, the balls may be kept apart and the rubbing action secured by
placing a square frame of iron between them, the ends of the bars which form
the sides of the frame acting as bearings for the axles.
Sixth, the balls being kept apart and on both sides of the egress hole in the
ring enables the operator to remove all the mercury or amalgam with ease.
and expedition.
Several small spherical balls which fit the corrugations or grooves are placed
in the interior, between the two large balls, to increase the pulverizing and
amalgamating power of the machine.
Seventh, the hollow axle is perforated in one part and there fitted with a
hollow cylindrical stuffing box, which receives hot or cold water from an
elevated tank; this water passes through the axle into the crushing and
washing machine.
Eighth, the cylindrical ring could be made hollow for the reception of steam
and for heating the amalgam. In this case the hollow shaft should be made
the medium of its conveyance, and the water conveyed by a separate pipe to
the interior of the machine.
Ninth, should the above means for heating water and amalgam be not used,
steam might be blown directly into the water between the balls. The machine
being self-feeding and otherwise self-acting, admits of being locked up, so that
no amalgam could be removed excepting by the authorized person with a
legitimate key.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Littell Tizard in the Great Seal Patent Office on the
10th July 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
LITTELL TIZARD, of Aldgate, in the City of London, Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Tenth day of January, in the year of our Lord One
thousand eight hundred and fifty-four, in the seventeenth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
William Littell Tizard, Her special licence that I, the said William Littell
Tizard, my executors, administrators, and assigns, or such others as I, the said
William Littell Tizard, my executors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for "MACHINERY FOR
STAMPING, CRUSHING, WASHING, AND AMALGAMATING GOLD AND OTHER ORES," upon
the condition (amongst others) that I, the said William Littell Tizard, by an
instrument in writing under my hand and seal, should particularly describe
and ascertain the nature of the said Invention, and in what manner the same
was to be performed, and cause the same to be filed in the Great Seal Patent
Office within six calendar months next and immediately after the date of
the said Letters Patent.
NOW KNOW YE, that I, the said William Littell Tizard, do hereby
declare the nature of my said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement thereof, reference being had to the Drawings hereunto
annexed, that is to say:-
The novel and pecular mechanical features of my machinery are as follows:-
First, two or more corrugated, fluted, or serrated hollow rings are mounted
on a horizontal axle to which rotary motion is communicated by means of
steam, water, horse, or other suitable power. The axle has cams or lugs, or
other projections for lifting stampers of the ordinary description, which are used
to break down large pieces of quartz, &c. The base plate on which the
stampers fall is perforated to allow the passage of broken ore, of limited dimen-
sions, which is elevated into a hopper that commands the machine by a Jacob's

page_text: ladder or other elevator, whence it gravitates through a spout or shute into the
hollow rings of the pulverizing machine, there to be pulverized, washed, and
amalgamated.
Second, the hollow rings of the pulverizing machine are furnished with
crushing balls which are cast hollow and corrugated or otherwise, to corre-
spond with the interior form of the hollow rings in which they run. The
specific gravity of these balls is increased by their being filled with lead.
The filling of the balls might be deferred until they arrive at their ultimate
destination.
Third, the balls have each an axle in the centre of one end or side, and an
axle a little out of the centre on the other; or they have a single axle running
eccentrically from side to side.
Fourth, the balls are connected a few inches apart by means of their axles
and two connecting rods, so that when the cylindrical rings revolve, the balls
run in the same direction to and fro, and at the same time their eccentric
axles produce the much desired (but never heretofore attained) spiral or rubbing
action.
Fifth, the balls may be kept apart and the rubbing action secured by
placing a square frame of iron between them, the ends of the bars which form.
the sides of the frame acting as bearings for the axles.
Sixth, the balls being kept apart and on both sides of the feeding and egress
hole in the rings, the operator is enabled to remove all the mercury or
amalgam with ease and expedition.
Seventh, the cylindrical rings could be made hollow for the reception of
steam or hot water for heating the amalgam. In this case the horizontal
shaft should be made hollow so as to form the medium of its conveyance, and
the washing water conveyed by a separate pipe to the interior of the machine.
Eighth, should the above means for heating the water and amalgam not be
used, steam might be blown directly into the water between the balls.
Ninth, the machine being self-feeding and otherwise self-acting admits of
being locked up, so that no amalgam can be removed excepting by the
authorized person with the legitimate key.
Figure 1 of the Drawings hereunto annexed is a front elevation, partly in
section Figure 2 is a side elevation, partly in section; and Figure 3 is a
plan, also partly in section, of my improved crushing, washing, and amalga-
mating machine. The stampers and the elevator for raising the broken ore
into the hopper which supplies the crushing, washing, and amalgamating
machine are not shewn, as they are of the ordinary description, and their cou-

page_text: struction is well understood. A, A, are iron standards, securely bolted to cross
stays B, B, and forming with them a permanent frame which supports the
wrought iron shaft C. On each end of this shaft is keyed a hollow cylindrical
ring D, with a corrugated sole or wearing surface E, which is flanged at the
edge and connected to the other parts of the ring by means of bolts and nuts
F, F, so as to admit of the ring being divided, and to facilitate the removal of
the sole when worn and its replacement by a new wearing part. In each
ring are placed two corrugated rollers or balls G, G, which are loosely con-
nected by means of their axles H, H, and the wrought or cast iron links I, I,
the axles being passed eccentrically through the balls or rollers, as before-
mentioned. The exit holes for tailings are at K, K, and all waste is
received and conveyed away from each ring by a circular cast iron or copper
tube L, open on one side, and having a pipe M in its lower part fastened to
the standards A, A. The water plugs are shown at N, N, and the plugs for
drawing off the mercury at O, O. The shaft C is furnished with fast and loose
pulleys P, P', by means of which it can be driven, or its motion stopped at
pleasure. It has also tappets for giving motion to the stampers before
mentioned.
When the shaft C is set in motion by a belt passing round the fast pulley P,
the hollow rings D, D, revolve, imparting rotary motion to the rollers or balls
G, G, and at the same time giving these rollers a compound twisting and
oscillating motion, by means of which a most effective crushing, grinding, and
amalgamating action is produced. Instead of forming the soles of the rings
with corrugations, such as are shewn, I also make them with angular flutes or
other like projections, but in all cases I make the said corrugations, flutes, or
projections run continuously round the rings, and I forin the rollers or balls so
as to correspond to the interior of the rings.
And 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 as of my
Invention is,
First, the construction of the cylindrical hollow rings of the crushing,
washing, and amalgamating machine with endless corrugations, flutes, or
serrations running round the same, and the formation of the balls or rollers
with corrugations, flutes, or serrations to correspond to those of the cylindrical
rings.
Second, the construction of the crushing balls or rollers with an eccentric
axle fitted therein, and the connection of the two balls or rollers of each
cylindrical ring by means of links or a frame placed between them.

page_text: And, third, the employment of a hollow shaft to the crushing, washing, and
amalgamating machine, and the construction of the cylindrical rings with
double soles or hollow soles for the admission of steam or hot water therein.
In witness whereof, I, the said William Littell Tizard, have hereunto
set my hand and seal, this Eighth day of July, One thousand eight
hundred and fifty-four..