IMPROVEMENTS IN TREATING PYRITES
Year: 1858

page_text: LETTERS PATENT to John Bethell, of 8, Parliament Street, Westminster,
Gentleman, for the Invention of "IMPROVEMENTS IN TREATING PYRITES."
PROVISIONAL SPECIFICATION left by the said John Bethell at the
Office of the Commissioners of Patents, with his Petition, on the 21st
September 1858.
I, JOHN BETHELL, of. No. 8, Parliament Street, Westminster, Gentleman,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
TREATING PYRITES," to be as follows:-
Large quantities of pyrites or sulphurets of iron, and of other metals are
now obtained at the coal mines and other places, which cannot now be
advantageously used in the arts for making, sulphur or sulphuric acid and for
other purposes for which sulphurets are used, because there is so much coal
or other extraneous matters mixed up with the sulphuret in the lumps.
My Invention has for its object the obtaining of the sulphuret freed from
the coal and other matters, and in nearly a pure state of sulphuret, and I
produce this result by grinding the sulphurets into small pieces with a pair of
iron rollers, or in any other convenient manner, and then washing such ground
materials with water, in any of the machines now used and well known for
washing coals and ores, whereby all the coal and extraneous matters will be

page_text: separated and washed away, and the heavy sulphuret left behind, which can
then be advantageously used in making sulphuric acid, sulphur, or for other
purposes for which sulphurets are now used. I claim the grinding and
washing of sulphurets as above described to free them from coal and other
extraneous matters.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Bethell in the Great Seal Patent Office on the 21st
March 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, Jonn
BETHELL, of 8, Parliament Street, Westminster, Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-first day of September, in the year of our
"Lord One thousand eight hundred and fifty-eight, in the twenty-second year
of Her reign, did, for Herself, Her heirs and successors, give and' grant
unto me, the said John Bethell, Her special licence that I, the said John
Bethell, my executors, administrators, and assigns, or such others as I,
the said John Bethell, 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 "IM-
PROVEMENTS IN TREATING. PYRITES," upon the condition (amongst others) that.
I, the said John, Bethell, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should parti-
cularly 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 John Bethell, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
Large quantities of pyrites or sulphurets of iron and of other metals are
now obtained at the coal mines and other places which cannot now be advan-
tageously used in the arts for making sulphur, or sulphuric acid, or for other
purposes for which sulphrets are used, because there is so much coal or other

page_text: extraneous matters mixed up with the sulphuret in the lumps. My Invention
bas for its object the obtaining of the sulphuret freed from the coal and other
matters, and in nearly a pure state of sulphuret, and I produce this result by
grinding the sulphurets into small pieces with a pair of iron rollers, or in
other convenient manner, and then washing such ground materials with water,
in any of the machines now used, and well known for washing coals and ores,
whereby all the coal and extraneous matters will be seperated and washed
away, and the heavy sulphuret left behind, which can then be advantageously
used in making sulphuric acid, sulphur, or for other purposes for which
sulphurets are now used.
I claim the grinding and washing of sulphurets as above described to free
them from coal and other extraneous matters.
In witness whereof, I, the said John Bethell have hereunto set my
hand and seals, this Twenty-first day of March, in the year of our
Lord One thousand eight hundred and fifty-nine.
JN°. BETHELL. (L.S.)