AN IMPROVEMENT IN PREPARING MATERIALS EMPLOYED TO OBTAIN LIGHT WHEN USING OXYGEN AND HYDROGEN GABES
Year: 1858

page_text: LETTERS PATENT to James Copcutt, of 5, Park Place, Newland Street,
Kensington, in the County of Middlesex, for the Invention of "AN
IMPROVEMENT IN PREPARING MATERIALS EMPLOYED TO OBTAIN LIGHT WHEN
USING OXYGEN AND HYDROGEN GABES."
Sealed the 30th September 1858, and dated the 20th May 1858.
PROVISIONAL SPECIFICATION left by the said James Copcutt at the
Office of the Commissioners of Patents, with his Petition, on the 20th
May 1858.
I, JAMES COPCUTT, of 5, Park Place, Newland Street, Kensington, in the
County of Middlesex, do hereby declare the nature of the Invention for "AN.
IMPROVEMENT IN PREPARING MATERIALS EMPLOYED TO OBTAIN LIGHT WHEN USING:
OXYGEN AND HYDROGEN GASES," to be as follows:-
This Invention has for its object an improvement in preparing materials
employed in obtaining light when using oxygen and hydrogen gases. For this,
purpose the gypsum or other material used, in place of being employed in the
same state as heretofore, is first raised to and retained for a time at a red heat
in a crucible in which a small quantity of sulphur is introduced; by which.
means the gypsum or other substance will be found to produce more beneficial
results than heretofore..

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James Copcutt in the Great Seal Patent Office on the
26th October 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
COPCUTT, of 5, Park Place, Newland Street, Kensington, in the County of
Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twentieth day of May, in the year of our Lord
One thousand eight hundred and fifty-eight, in the twenty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said James Copcutt, Her special licence that I, the said James Copcutt,
my executors, administrators, and assigns, or such others as I, the said
James Copcutt, 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 IMPROVEMENT IN
PREPARING MATERIALS EMPLOYED TO OBTAIN LIGHT WHEN USING OXYGEN AND
HYDROGEN GASES," upon the condition (amongst others) that I, the said James
Copcutt, 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 James Copeutt, do hereby declare the
nature of the 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 thereof, that is to say:―
This Invention has for its object an improvement in preparing materials
employed in obtaining light when using oxygen and hydrogen gases. For this
purpose the gypsum or other material used, in place of being employed in the
same state as heretofore, is first raised to and retained for a time at a red heat
in a crucible in which a small quantity of sulphur is introduced; by which
means the gypsum or other substance will be found to produce more beneficial
results than heretofore.
I find in practice, that a satisfactory result is obtained by mixing with the
gypsum, or other substance usually employed in obtaining light when using

page_text: oxygen and hydrogen gases, about 5lbs. of sulphur to a ton of the substance;
the mixture is raised to a red heat in a covered crucible or oven, and is kept
at this heat for about 24 hours; it is afterwards allowed to cool, and cut into
pieces of suitable form for use.
The light is obtained by throwing an ignited jet of oxygen and hydrogen
gases on to the gypsum or other substance prepared in this manner, so as to
bring it to a white heat just in the same manner as when gypsum or other
substance in an unprepared state is employed.
In witness whereof, I, the said James Copcutt, have hereunto set my
hand and seal, this Twenty-first day of October, in the year of our
Lord One thousand eight hundred and fifty-eight.
Witness,
JANE COPCUTT.
JAMES COPCUTT. (L.S.)