IMPROVEMENTS IN THE MANUFACTURE OF THE CRUCIBLES, MUFFLES, OR POTS. USED FOR THE REDUCTION OF THE ORES OF ZINC
Year: 1860

page_text: LETTERS PATENT to Emile Louis Gatellier, of La Ferté-sous-Jouarre
(Seine et Marne), France, Ingineer, for the Invention of "IMPROVEMENTS
IN THE MANUFACTURE OF THE CRUCIBLES, MUFFLES, OR POTS. USED FOR THE
REDUCTION OF THE ORES OF ZINC."
Sealed the 10th July 1860, and dated the 24th January 1860.
PROVISIONAL SPECIFICATION left by the said Emile Louis Gatellier
at the Office of the Commissioners of Patents, with his Petition, ou the
24th January 1860.
I, EMILE LOUIS GATELLIER, of La Ferté-sous-Jouarre (Seine et Marne),
France, Ingineer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN THE MANUFACTURE OF THE CRUCIBLES, MUFFLES, OR POTS USED
FOR THE REDUCTION OF THE ORES OF ZINC," to be as follows:-
. It has been known for a long time that when new crucibles are used in a
zinc oven a portion of the zinc is lost, and it has been hitherto supposed that
this was due to the absorption of the zinc by the crucible, and that once the
crucible was saturated with zinc this loss ceased. I have found by experiment
that this was not the true reason, and that the loss was occasioned by the zinc
tho
in a state of vapour passing through the pores of the crucible and up
chimney, and that this action ceased after some time by reason of a sort of
natural varnish being formed, which, coating the outside of the crucible,.
prevented the vapourised zine from passing through; I thus found out that by

page_text: coating the outside of the crucible with a vitrifiable material or glaze, such as
salts or oxydes of potassium or sodium, lime, lead, or other suitable substances,
this loss of the zinc was obviated. These glazing materials may be applied as
follows: When the crucible has been dried and before it is burnt, it is
painted over whilst warm with these glazing materials cither in solution or
suspended in water.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Emile Louis Gatellier in the Great Seal Patent Office
on the 20th July 1860.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EMILE
LOUIS GATELLIER, of La Ferté-sous-Jouarre (Seine et Marne), France, send.
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fourth day of January, in the year of our Lord
One thousand eight hundred and sixty, in the twenty-third year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Emile Louis Gatellier, Her special licence that I, the said Emile
Louis Gatellier, my executors, administrators, and assigns, or such others
as I, the said Emile Louis Gatellier, 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 THE CRUCIBLES, MUFFLES, OR
POTS USED FOR THE REDUCTION OF THE ORES OF ZINC," upon the condition
(amongst others) that I, the said Emile Louis Gatellier, 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 Emile Louis Gatellier, 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 follow-
ing statement:-
When new crucibles or muffles are used in the manufacture of zinc, it is

page_text: well known that a portion of the zinc is lost. This loss was hitherto supposed
to be due to an absorption of the metal by the crucible, and that the loss no
longer took place as soon as the crucible was saturated. Having found, how-
ever, that the loss was occasioned by the vapours of zinc passing through the
pores of the crucible and then up the chimney, which action stopped after
some time, by reason of the zinc oxyde forming a varnish or glaze with the
clay of the crucible outside, I produce the same result by coating at once the
crucible with a vitrifiable material or glaze suitable to the purpose, such as
the salts of oxyds. of potassium, of sodium, of lime, or of manganese, of lead,
and other analogous substances. These substances or glaze may be applied as
follows:-The crucible being first well dried, and before it is burnt, I paint it
over while warm with any of the glazing materials above alluded to, and held
either in suspension in water or dissolved therein.
In witness whereof, I, the said Emile Louis Gatellier, have' hereunto
set my hand and seal, this Seventeenth day of July, One thousand
eight hundred and sixty.
Signed and sealed in the presence of
L. D'AUBRÉVILLE, C. E.,
Boulev. de Strasbourg,
Paris.
E. L. GATELLIER. (L.S.)