CERTAIN IMPROVEMENTS IN MACHINERY OR APPARATUS FOR CRUSHING, GRINDING, AND DRESSING METALLIC ORES, QUARTZ, AND OTHER SIMILAR SUBSTANCES
Year: 1863

page_text: LETTERS PATENT to Joseph Mosheimer, of Dolgelly, in the County of
Merioneth, Gentleman, for the Invention of "CERTAIN IMPROVEMENTS IN
MACHINERY OR APPARATUS FOR CRUSHING, GRINDING, AND DRESSING METALLIC
ORES, QUARTZ, AND OTHER SIMILAR SUBSTANCES."
Şealed the 18th September 1863, and dated the 8th April 1863.
PROVISIONAL SPECIFICATION left by the said Joseph Mosheimer at
the Office of the Commissioners of Patents, with his Petition, on the
8th April 1863.
I, JOSEPH MOSHEIMER, of Dolgelly, in the County of Merioneth, Gentle-
man, do hereby declare the nature of the said Invention for "CERTAIN IMPROVE-
MENTS IN MACHINERY OR APPARATUS FOR CRUSHING, GRINDING, AND DRESSING
METALLIC ORES, QUARTE, AND OTHER SIMILAR SUBSTANCES," to be as follows:-
My Invention relates, first, to the crushing of auriferous, argentiferous, or
other metallic ores, and, secondly, to the separation of the valuable portion
from the inferior portions thereof.
The improvements consist, first, in the employment and use of a heavy
metallic crushing weight, hammer, or stamp, which is attached to a vertical
shaft, upon which adjustable and inclined tappets are secured, and which are
acted upon by lifting cams in such a manner as to lift the hammer and allow
it to fall by its weight, the angle of the tappet effecting the partial revolution
of the hammer or stamp at each stroke, so as constantly to present a different

page_text: surface to the ore, which is supplied beneath the hammer upon a dio or foun-
dation, the whole being enclosed in a casing or mortar, the crushed ore issuing
therefrom by means of a screened aperture. When crushing wet ore a space
is left in this mortar, lined with copper and amalgamated with mercury, so as
to retain any gold or precious metal that may come in contact therewith.
A second part of the Invention relates to an arrangement of apparatus for
separating the finely-crushed particles from the rougher or coarser portions,
and consists in the use of a chamber divided into compartments, each having
a stream of water passing through it, the pulverized ore being admitted to the
part of the chamber above the partitions and at right angles to the course
of the water stream, so that the heavy portion of the ore falls into the first
compartment, the lighter and finer into the second, and so on, where they
subside to the bottom, whence they may be removed by means of a pipe
and tap.
A third part of the Invention relates to the effecting a further separation or
dressing of the ore, and consists in a number of "hopper" or delivery boards, one
or more supplying a table with the pulverized ore, and others supplying water,
thereto; the table is suspended at an angle, and caused to reciprocate laterally
by means of an eccentric and rod, so that the ore is evenly spread over tho
surface at the upper edge of the table, but by the reciprocating motion the
valuable portion of the ore accumulates at one side of the table, the middle
quality nearer the centre, and the inferior portion at the side.
Another arrangement of apparatus for this purpose consists of a revolving
table divided by radiating ridges and sloping to the centre, and furnished with
a series of inclined planes or "hopper boards," gradually converging to the
centre of the table, each alternate hopper being for ore and the other for
water, the entire surface of the table also being supplied with a continuous
stream of water by means of a perforated pipe around the periphery of
the table. The crushed ore is washed and dressed by the water and is
again separated by the action of the water, the inferior quality being
washed at once down to the centre of the receiving table beneath the upper
or washing table, and passes away by itself, the valuable portion remaining
on the upper table, and is removed by the continuous stream, which washes
it through the delivery pipe communicating with a reservoir, where it remains
to subside.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Joseph Mosheimer in the Great Seal Patent Office on the
7th October 1868.
TO ALL TO. WHOM THESE PRESENTS SHALL COME, J, JOSEPH
MOSHEIMER, of Dolgelly, in the County of Merioneth, Gentleman, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eighth day of April, in the year of our Lord
One thousand eight hundred and sixty-three, in the twenty-sixth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Joseph Mosheimer, Her special license that I, the said Joseph
Mosheimer, my executors, administrators, and assigns, or such others as I, the
said Joseph Mosheimer, 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
CERTAIN IMPROVEMENTS IN MACHINERY OR APPARATUS FOR CRUSHING, GRINDING,
AND DRESSING METALLIC ORES, QUARTZ, AND OTHER SIMILAR SUBSTANCES," upon the
condition (amongst others) that I, the said Joseph Mosheimer, my executors
or administrators, by an instrument in writing under my, or their, or one of
their hands and seals, 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 Joseph Mosheimer, do hereby declaro
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement and accompanying Drawings (that is to say):-
My Invention relates, first, to the crushing of auriferous, argentiferous, or
other metallic, and, secondly, to the separation of the valuable portion from
the inferior portions thereof.
The improvements consist, first, in the employment and use of a heavy
metallic crushing weight, hammer, or stamp which is attached to a vertical
shaft, upon which adjustable tappets are secured, and which are acted upon by
lifting cams in such a manner as to lift the hammer and allow it to fall by its

page_text: weight, the angle of the cam effecting the partial revolution of the hammer or
stamp at each stroke, so as constantly to present a different surface to the ore,
which is supplied beneath the hammer upon a die or foundation, the whole
being enclosed in a casing or. mortar, the crushed ore issuing therefrom by
means of a screwed aperture with a wood partition on the opposite side, so as
to keep away the pressure of water against the screen, which is provided with
an outlet at the bottom to regulate the height of the water in the mortars.
When crushing wet ore, a space is left in this mortar, lined with copper and
amalgamated with mercury, so as to retain any gold or precious metal that
may come in contact therewith.
A second part of the Invention relates to an arrangement of apparatus for
separing the finely-crushed particles from the rougher or courser portions,
and consists in the use of a chamber divided into compartments, each having a
stream of water passing through it, the pulverized ore being admitted to the
part of the chamber above the partitions and at right angles to the course of
the water stream, so that the heavy portion of the ore falls into the first com-
partment, the lighter and finer into the second, and so on, where they subside
to the bottom, whence they may be removed by means of a pipe and tap.
A third part of the Invention relates to the further separation or dressing
of t'ore, and consists in a number of "hopper" or delivery boards, one
applying a table with the pulverized ore, and others supplying water thereto;
the table is suspended at an angle and caused to reciprocate laterally by means
of an eccentric or cams and rod, so that the ore is evenly spread over the
surface at the upper edge of the table, but by the reciprocating motion the
valuable portion of the ore accumulates at one side of the table, the middle
quality nearer the centre, and the inferior portion at the other side, the discharge
thereof being continuous.
Another arrangement of apparatus for the purpose consists of a revolving
table divided by radiating ridges and sloping to the centre, and furnished with
a series of inclined planes or "hopper boards," gradually converging to the
centre of the table, each alternate hopper being for ore and the other for water,
the entire surface of the table also being supplied with a continuous stream of
water by means of a perforated pipe around the periphery of the table. The
crushed ore is washed and dressed by the water and is again separated by the
action of the water, the inferior quality being washed at once down the centre
of the receiving table beneath the upper or washing table, and passes away
by itself, the valuable portion remaining on the upper table, and is removed by
the continuous stream which washes it through the delivery pipe and com-
municating with a reservoir, where it remains to subside.

page_text: In order that the Invention may be better understood and explained
in detail, I have hereunto attached a Sheet of Drawings made upon a scale of
about two inches to the foot, similar letters of reference being marked upon
corresponding parts of the apparatus.
Fig. 1 represents a front view of the stamping apparatus employed for
crushing the ore, and Fig. 2 is a side view of the same shewn in section..
Fig. 3 represents a front view shewn in section of the apparatus for separating
what is termed the "slimes," that is, the finely reduced particles from the
courser, and Fig. 4 is an end section of the same. Fig. 5 represents a front
elevation, and Fig. 6 a plan view, of the apparatus for effecting a further.
separation of the particles; and Figs. 7 and 8 are respectively a vertical
section and a plan view of another apparatus designed for the same purpose.
In Fig. 1 and 2 a, a, are the stamps or weights attached to the vertical
shafts b, b, steadied by the guide-boxes, and upon which are fixed the tappets
c, c, such tappets being lifted by the cams d, d, whereby the stamps are caused
to rise and fall and to turn partially round in its movement, so as to prevent a
.different surface to the ore at each stroke. The ore is placed beneath the
stamps on the dies e, e, and the whole is surrounded by the case or mortar f,f.
In wet-crushing, a space 9 is left in the mortar, which is lined with copper.
and amalgamated with mercury, to retain gold or precious metal; h is the
aperture by which the water escapes, two or more being adapted, if required,
to give a more rapid discharge. In Figs. 3 and 4, a, a, is an outer chamber
divided into compartments 1, 2, 3, 4, and which are supplied with a
continuous stream of water by the pipes b, b, b; into this chamber the "slimes
or crushed ore, consisting of large and small particles, are conveyed by the
trough d, and pass out by the trough e, and in thus passing the heavier particles
fall in the first compartment, and the lighter into the second, and so on, where
they settle and become separated or "sorted," and from whence they are removed
by the taps f,f,f. In Figs. 5 and 6, which apparatus also effects the sepa-
ration of the crushed ore. a, a, is an inclined table suspended by the links b, b,
and attached to the bar c, c, which is acted upon by the cam d, which imparts
thereto a reciprocating movement, the "slimes" being supplied through the
trough e and hopper boards f and then to the swinging table, the hopper
boards g, 9, supplying the table with water, by which combined means the ore
is equally spread. Divisions 1, 2, 3, are made at the lower end of the tablo
corresponding with trougs beneath, which receive the different qualities of
the ore as they are separated by the reciprocating motion of the table, the best
quality being thrown the furthest, as indicated by the red dotted lines, and
which fall into the channel 1, the less valuable and waste falling respectively

page_text: into the channels 2 and 3. In Figs. 7 and 8, which are respectively a vertical
section and plan view of an apparatus also for effecting the washing of the
finist slimes and separation of the particles of pulverized ore. a, is the vertical
shaft which is caused to revolve, and upon which is fixed an inclined or sloping
framework b, which is divided into ridges and furnished with a series of
inclined planes or hopper boards c, c, c', c', which gradually converge towards
the central shaft; every alternate one of these hoppers c, c, are for ore "slime,"
which is conveyed by the pipe d, and the intermediate ones c¹, c', are for
supplying water, which is tonveyed by the pipe c, the entire surface of the
table being also supplied with a continuous stream of water by means of the
pipe f, thus the earthy matters and less valuable particles are washed towards
the centre of the table, whence it passes into the waste discharge trough g,
whilst the valuable product of the ore which remains on the table is met by
the water from the pipo f1 and carried down the pipe h, which passes it into a
reservoir to settle.
Having now described the nature of the said Invention, together with the
method of carrying the same into practical effect, I wish it to be distinctly
understood that I claim the novel arrangement, combination, construction,.
and arrangement of apparatus for effecting the desired objects as herein-
before described, set forth, and fully illustrated in the Drawings attached.
In witness whereof, I, the said Joseph Mosheimer, have hereunto set
my hand and seal, this Twelfth day of September, in the year of
our Lord One thousand eight hundred and sixty-three.
JOSEPH MOSHEIMER. (L.S.)