AN IMPROVED MODE Or TREATING SMALL PYRITES AND PYRITES DUST SO AS TO OBTAIN SULPHUR THEREFROM
Year: 1867

page_text: LETTERS PATENT to Christian Allhusen, of Newcastle-upon-Tyne,
Chemical Manufacturer, for the Invention of "AN IMPROVED MODE Or
TREATING SMALL PYRITES AND PYRITES DUST SO AS TO OBTAIN SULPHUR
THEREFROM."
Sealed the 9th July 1867, and dated the 19th March 1867.
PROVISIONAL SPECIFICATION left by the said Christian Allhusen at the
Office of the Commissioners of Patents, with his Petition, on the
19th March 1867.
I, CHRISTIAN ALLHUSEN, of Newcastle-upon-Tyne, Chemical Manufacturer,
do hereby declare the nature of the said Invention for "AN IMPROVED MODE
OF TREATING SMALL PYRITES AND PYRITES DUST 80 AS TO OBTAIN SULPHUR THERE-
FROM," to be as follows:-
Hitherto the pyrites dust or small pyrites produced by the removal and
breaking of the blocks of pyrites has been of little use to the manufacturer in
consequence of the expence of the apparatus and fuel necessary to produce its
combustion.
Now the object of my Invention is to burn this pyrites dust and small
pyrites in the manner herein-after described in the ordinary pyrites burners,

page_text: and thereby obtain the sulphur contained in it without using for this purpose
any coal, coke, or fuel other than the pyrites constantly burning in the said
pyrites burners.
In carrying out my Invention I place the small or fine pyrites and pyrites
dust to be operated upon upon plates or trays of metal, earthenware, or other
suitable substance introduced into the ordinary pyrites furnaces or burners,
and placed in such a position therein over the burning pyrites as that the
flame and heat from such burning pyrites shall operate upon the plates or
trays sufficiently to cause the combustion of the small or fine pyrites and
pyrites dust placed on the said plates or trays. The sulphur fumes produced
by this combustion are conveyed to the leaden chambers by the ordinary
burner pipes or channels of communication between the burners and the said
leaden chambers.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Christian Allhusen in the Great Seal Patent Office on the
18th September 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHRISTIAN
ALLHUSEN, of the Borough and County of Newcastle-upon-Tyne, Chemical
Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Nineteenth day of March, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirtieth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the said
Christian Allhusen, Her special licence that I, the said Christian Allhusen, my
executors, administrators, and assigns, or such others as I, the said Christian
Allhusen, 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 "AN IMPROVED MODE
OF TREATING SMALL PYRITES AND PYRITES DUST SO AS TO OBTAIN SULPHUR
THEREPROM," upon the condition (amongst others) that I, the said Christian
Allhusen, 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

page_text: Office within six calendar months next and immediately after the date of the
said Letters Patent.
NOW KNOW YE, that I, the said Christian Allhusen, 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 state-
ment, reference being had to the Drawings hereunto annexed (that is to
say) :-
That whereas hitherto the pyrites dust or small pyrites produced by the
removal and breaking of the blocks of pyrites has been of little use to the
manufacturer in consequence of the expense of the apparatus and fuel
necessary to produce its combustion.
The object of my Invention is to burn the pyrites dust and small pyrites in
the manner herein-after described in the ordinary pyrites burners, and thereby
obtain the sulphur contained in it without using for this purpose any coal,
coke, or fuel, other than the pyrites constantly burning in the said pyrites
burners, and I declare that the manner in which my said Invention is to be
performed is as follows:-
I place the small or fine pyrites and pyrites dust to be operated upon upon
plates or trays of metal, earthenware, or other suitable substance; these plates
or trays are introduced into the ordinary pyrites furnaces or burners, and are
placed in a suitable position therein at such a distance over the burning pyrites,
(I have found about 12 inches to be the most suitable distance), as that the
flame and heat from such burning pyrites shall operate upon the plates or
trays sufficiently to cause the combustion of the small or fine pyrites or
pyrites dust placed on the said plates or trays. The sulphur fumes produced
by the combustion of the small or fine pyrites or pyrites dust are conveyed
to the leaden chambers by the ordinary burner pipes or channels of com-
munication between the burners and the said leaden chambers.
In order that my Invention may be most fully understood I will now
proceed to describe by the aid of the annexed Drawings (in each Figure of
which the same letters of reference indicate similar portions of the apparatus)
the additions and alteration which I make in the ordinary pyrites burners in
order to adapt them for carrying out my said Invention.
Fig. I. represents in elevation the front of a pyrites burner; Fig. II., a
section of the same; and Fig. III., a side section of the same taken through
the dotted line A, B, on Figs. I. and II. In the front of the pyrites burner
I make two doors (a and a', Fig. I.,) sufficiently large to admit of the intro-
duction of the plates or trays (c, d, and c, d, Figs. II. and III.,) upon
which the small pyrites is to be placed; these plates or trays rest on the

page_text: top of the side and front and back walls of the pyrites burners, as repre-
sented in Figs. II. and III., and are placed so far from each other that
between them there is an open space of about 9 inches to allow of the passing
of the sulphur fumes from the burning pyrites beneath. The plates or
trays c, d, and c, d, Figs. II. and III., must be regulated in size by the
dimensions of the pyrites burners; those which I have found the most con-
venient and suitable are of cast iron 5 feet 6 inches long, 1 foot 6 inches
wide, and 1 inch and a quarter thick, the bottom of the tray being arched in
the centre, as represented at D, Fig. III., to strengthen the tray. On one
side of the plate or tray is formed a flange of about 2 inches, as represented
at d and d', Figures II. and III., to prevent the small pyrites or pyrites dust
from falling off the plate or trays when introduced into the burners, the
walls of the burners acting for the same purpose on the other sides of the
plates or trays. In all other respects, except those I have above stated, the
pyrites burners are those in ordinary use for burning pyrites.
Having described the nature of my Invention and the manner of performing
the same, I declare that what I claim is the mode herein-before described of
treating small pyrites and pyrites dust so as to obtain sulphur therefrom.
In witness whereof, I, the said Christian Allhusen, have hereunto set
my hand and seal, this Sixteenth day of September, in the year of our
Lord One thousand eight hundred and sixty-seven.
C. ALLHUSEN. (L.s.)