IMPROVEMENTS IN APPARATUS FOR WASHING AND SEPA- RATING ORES AND OTHER MINERALS
Year: 1872

page_text: LETTERS PATENT to Upfield Green, of the Limes, Cassland Road,
South Hackney, in the County of Middlesex, Stationer, for tho
Invention of "IMPROVEMENTS IN APPARATUS FOR WASHING AND SEPA-
RATING ORES AND OTHER MINERALS."-A communication from abroad by
Johann Fredrich Utsch, of Iserlohn, in the Empire of Germany.
Sealed the 7th February 1873, and dated the 13th August 1872.
PROVISIONAL SPECIFICATION left by the said Upfield Green at the
Office of the Commissioners of Patents, with his Petition, on the
13th August 1872.
I, UPFIELD GREEN, of the Limes, Cassland Road, South Hackney, in
5 the County of Middlesex, Stationer, do hereby declare the nature of
the said Invention for "IMPROVEMENTS IN APPARATUS FOR WASHING AND
SEPARATING ORES AND OTHER MINERALS," a communication from abroad by
Johann Fredrich Utsch, of Iserlohn, in the Empire of Germany, to be as
follows:-

page_text: is constructed in a peculiar manner, whereby the contents are balanced,
unvarying pressure produced, and self-acting delivery of the minerals
secured. To attain these objects I construct a cistern, and divide it into
compartments for the reception of one or more pistons and sieves. The
first sieve is of ordinary dimensions; the following ones are much shorter.
The first sieve, and some of the other sieves, may be set slightly
inclined, the last sieve flat, and each sieve a little lower in the cistern
than the immediately preceding one. An inclined slot is formed in tho
division of each compartment close above the sieve, the slot being large
enough for the largest of the stuff to pass through freely. Openings are
also made in the middle divisions of the cistern, so that the water from
the last sieve may flow to the piston or plunger compartments. Above
each siave is a regulating and discharging cylinder with an inclined
nozzle, each discharging cylinder being set at different heights. If
desirable a small separating trommel is placed in connection with the
mouth of one or more of the inclined nozzles. The mineral or stuff is
supplied to the apparatus in the usual way, and the piston or pistons
driven by means of eccentrics, rocking shaft, differential, or cam gear.
Any stuff passing through the siève bottoms, grids, or perforated plates,
may be withdrawn by means of valves, plug boxes, or ordinary plugs.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Upfield Green in the Great Seal Patent Office on
the 13th February 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, UPFIELD
GREEN, of the Limes, Cassland Road, South Hackney, in the County of
Middlesex, Stationer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirteenth day of August, in the year
of our Lord One thousand eight hundred and seventy-two, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Upfield Green, Her special licence
that I, the said Upfield Green, my executors, administrators, and
assigns, or such others as I the said Upfield Green, 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

page_text: 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 "IMPROVEMENTS IN
APPARATUS FOR WASHING AND SEPARATING ORES AND OTHER MINERALS," a com-
munication to me from abroad by Johann Fredrich Utsch, of Iserlohn,
in the Empire of Germany, upon the condition (amongst others) that
I, the said Upfield Green, 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 In-
vention, 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 Upfield Green, do hereby declare
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, reference being made to the accompanying
Drawings and to the letters and figures marked thereon, that is to
say :-
This Invention relates to certain improvements in apparatus techni-
cally called a jigger, used for separating or sorting ores, or other
minerals. It is especially designed to render more effective and econo-
mical the purifying or separating action of the jigger, which it facilitates,
and even realizes almost to extreme efficiency.
My apparatus is so constructed that the parts or particles of the
material with which it is supplied are properly balanced, and subjected
to an unvarying degree of pressure, whilst a continuous self-acting
delivery of the materials is perfectly obtained.
In order that my Invention may be regarded as a whole, and its
various parts clearly perceived, and also that I may make the action of
my proposed apparatus fully understood, I have given various illus.
trations of my Invention on the annexed Sheet of Drawings, each.
numeral used for indication referring to identical or corresponding parts
throughout all the Figures.
Fig. 1 is a longitudinal vertical section of the apparatus.; Fig. 2 is a
5 transverse section on the line A, B; Fig 3 is a plan of the apparatus;
Fig. 4 is a longitudinal vertical section of the apparatus, showing two

page_text: separating compartments, and eccentric driving gear; Fig. 5 is a trans-
verse section on the line C, D; Fig. 6 is a transverse section on the
line E, F, of a waste discharge hopper; and Fig. 7 is a plan of the
jigger, shewn in Fig. 4.
The apparatus consists of a long horizontal hutch or cistern, which is
divided by transverse ends and partitions into jigging compartments,
numbered 1, 2, 3, 4. Along the upper part of these compartments
there is a vertical partition marked 5, to one side of which a certain
number of plungers or pistons, marked 6, 7, 8, 9, are attached, in order
to produce the jigging or pulsative motion of the water; and the sieves,
numbered 10, 11, 12, 13, are placed on the other side. The frame-
work of the hutch serves to carry the motive gear marked 15, which
may consist of a rocking shaft, rotating shaft fitted with eccentrics, or
other suitable appliance.
The minerals to be treated are supplied to the sieve 10 of the first
compartment, and are discharged through regulated slot openings,
marked 16, 17, 18, 19, or through a waste discharge, shown at 20, or by
means of tubes fitted with spouts, as at 21, 22, whilst any stuff passing
through the sieve is withdrawn from time to time through door
openings, marked 23, 24, 25, 26, or otherwise discharged by lifting plug
valves, one of which, marked 27, is shown in Fig. 5. The first sieve 10
is much longer than the rest, and with all the other sieves, excepting
the last, is usually inclined at a greater or less angle as may be found
necessary. Each sieve is placed a little lower than the preceding one,
with which it communicates by means of an inclined slot, marked 28,
and which is sometimes fitted with moveable regulators, but in all cases
by a slot opening sufficiently wide for the passage of stuff.
When using the apparatus the smaller divisions 11, 12, and 13 arc
partly filled with "equivalents," that is to say, with grains of mineral
or material having equal velocity of fall in water, and of a certain
determinate size. Observing that, proceeding from the first sieve, the
proportionate size or density of the "equivalents" contained in every
successive sieve must be increased. To balance the contents, and to
secure unvarying regularity, the discharge openings are in direct com-
munication with the upper surface only of the beds, and therefore, unless
at this stage additional stuff be supplied to the jigger, none can pass out.
Thus the beds are rendered permanently the same, whether they are
augmented or not by further "cquivalents."

page_text: As a preliminary to the effective use of my proposed apparatus it is
expedient that the ores or minerals, to be operated upon should be sorted
or classified according to the varying size of their constituents, or if neces-
sary they should be reduced to certain specified sizes. It is also.
desirable that numerous compartments should be formed in the hutch,
in order to separate mixtures varying in degree of richness; or which
contain different minerals.
Having thus described the nature of my, said Invention, and tho
'manner in which the same may be carried into effect, I now observe in
conclusion that I do not confine myself to the precise details or arrange-
ments which I have had occasion to describe, as many variations may
be made therefrom without deviating from the main features of my
Invention; but what I consider to be novel and original, and therefore
claim aro,—
First. The use of equivalent compartments, and the maintaining
therein of permanent,beds, or of a certain unvarying amount of mineral
or other matter, composed of "equivalents," that is to say, of grains
having an equal velocity of fall in water for, the purpose of separating
Fores or other minerals, such: " equivalents "being often larger than the
openings in the sieves.
Secondly. The discharge of surplus "equivalents" from the per-
manent beds, in manner substantially as herein-before described.
In witness whereof, I, the said Upfield Green, have hereunto set
my land and scal, this Tenth day of February, in the
our Lord One thousand eight hundred and seventy-three.
year of