IMPROVEMENTS. IN THE MANUFACTURE OF SULPHATE OF MAGNESIA OR EPSOM SALTS PROM DOLOMITE OR MAGNESIUM LIMESTONE
Year: 1868

page_text: LETTERS PATENT to Franklin Winser, of the City of Manchester,
in the County of Lancaster, for the Invention of "IMPROVEMENTS.
IN THE MANUFACTURE OF SULPHATE OF MAGNESIA OR EPSOM SALTS PROM
DOLOMITE OR MAGNESIUM LIMESTONE."
Sealed the 26th January 1869, and dated the 29th July 1868.
PROVISIONAL SPECIFICATION left by the said Franklin Winser at
the Office of the Commissioners of Patents, with his Petition, on
the 29th July 1868.
I, FRANKLIN WINSER, of the City of Manchester, in the County of
Lancaster, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN THE MANUFACTURE OF SULPHATE OF MAGNESIA OR EPSOM
SALTS FROM DOLOMITE OR MAGNESIUM LIMESTONE," to be as follows:-
I put carbonate of magnesia or dolomite, or the oxide of the same,
either in the lump or ground state into the gas purifiers, instead of
carbonate of lime or other articles now used for the purpose of
purifying and freeing ordinary burning or illuminating gas from
sulphur and other impurities; or I place the magnesia or dolomite,
either carbonate or oxide, ground or in lump, in chambers, furnaces,

page_text: or any convenient receptacle, and introduce into the said chambers,
furnaces, or other receptacles sulphurous acid gas produced by burning
any sulphides or bi-sulphides of earths or metals, by which means
sulphides of magnesia are produced, which sulphides are converted into
sulphates by means of furnaces or other known methods.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Franklin Winser in the Great Seal Patent Office
on the 28th January 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FRANKLIN
WINSER, of the City of Manchester, in the County of Lancaster, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-ninth day of July, in the year
of our Lord One thousand eight hundred and sixty-eight, in the
thirty-second year of Her reign; did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Franklin Winser, Her special
license that I, the said Franklin Winser, my executors, administrators,
and assigns, or such others as I, the said Franklin Winser, 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 "IMPROVEMENTS IN
THE MANUFACTURE OF SULPHATE OF MAGNESIA OR EPSOM SALTS FROM DOLOMITE
OR MAGNESIUM LIMESTONE," upon the condition (amongst others) that
I, the said Franklin Winser, 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 Franklin Winser, do hereby
declare the nature of my said Invention, and in what manner the

page_text: same is to be performed to be particularly described and ascertained
in and by the following statement (that is to say) :-
I put the carbonate of magnesia or dolomite, or the oxide of the
same, either in the lump or ground state into the gas purifiers, either
dry or saturated with water, instead of carbonate of lime or other
articles now used for the purpose of purifying and freeing ordinary
burning or illuminating gas from sulphur and other impurities; or I
place the magnesia or dolomite, either carbonate or oxide, ground or in
lump, in chambers, furnaces, or any convenient receptacle, and introduce
into the said chambers, furnaces, or other receptacles sulphurous acid
gas produced by burning any sulphides or bi-sulphides of earths or
metals, by which means sulphides of magnesia are produced, which
sulphides are converted into sulphates by means of furnaces or other
known methods.
In witness whereof, I, the said Franklin Winser, have hereunto
set my hand and seal, this Twenty-sixth day of January, in the
year of our Lord One thousand eight hundred and sixty-nine.
Signed, sealed, and delivered by
the within-named Franklin
Winser, in the presence of
G. SEPTIMUS HUGHES,
Patent Agent,
Manchester.
FRANKLIN WINSER. (L.s.)