NEW METALLIC ALLOYS
Year: 1855

page_text: Sealed the 4th June 1858, and dated the 28th December 1857.
PROVISIONAL SPECIFICATION left by the said Henry Desmoutis at the
Office of the Commissioners of Patents, with his Petition, on the 28th
December 1857.
I, HENRY DESMOUTIS, of Paris, in the Empire of France, Manufacturer, do
hereby declare the nature of the said Invention for "NEW METALLIC ALLOYS,"
to be as follows:-
.
Alloys. of either rhodium, iridium, or ruthenium, or of several of these
metals with platina, in determined proportions, have not heretofore been applied
to purposes of industry, such as in apparatus for chemical purposes, art,
philosophical apparatus, gold and silversmith's work, jewelry, dentistry, or
surgical apparatus.
After having purified: the metals in question by chemical processes, I mix
them in a minutely divided state in certain determined proportions, in which
they combine: together. like platina. The alloy's resulting are suitable for
various industrial purposes, though I believe chiefly for the purposes above
indicated. 1:
The proportions in. which these metals are mixed to form the alloys are

page_text: according to the purposes for which the alloys are to be used, and are so
various as to be almost illimitable, for example, three per cent. of one metal
may be mixed with two per cent. of another, and five per cent. of a third, and
ten or other per-centage of a fourth, to form the alloy required for the purpose
intended.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Henry Desmoutis in the Great Seal Patent Office on the
22nd June 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
DESMOUTIS, of Paris, in the Empire of France, Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-eighth day of December, in the year of our
Lord One thousand eight hundred and fifty-seven, in the twenty-first year of Her.
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Henry Desmoutis, Her special licence that I, the said Henry
Desmoutis, my executors, administrators, and assigns, or such others as I, the
said Henry Desmoutis, 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 "NEW METALLIC
ALLOYS," upon the condition (amongst others) that I; the said Henry
Desmoutis, 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 Henry Desmoutis, 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 (that is to say):--
My Invention relates to the preparation or combining of certain metallic
alloys. Alloys of either rhodium, iridium, or ruthenium, or of several of
these metals with platina, have not hitherto been applied in fixed proportions
to purposes of industry, such as in apparatus for chemical purposes, art,

page_text: philosophical apparatus, gold and silversmiths' work, jewelry, dentistry, or
surgical apparatus.
After having purified the metals in question by ordinary chemical processes,
and obtained them in a pulverulent state, I mix them in the above state, one by
one or several of them, with pulverulent platina, in certain determined or
definite proportions (which are innumerable and such as required for the
respective purposes of industry to which the alloys are to be applied); the
whole quantity being reduced to a minutely divided state and combined
together, is then aggregated into masses or ingots in the usual way for
platina itself, and, lastly, solidified by heat as usually practised in solidifying
that metal.
The proportions in which these metals are mixed to form the alloys are
according to the purposes for which the alloys are to be used, and are so
various as to be almost illimitable; for example, three per cent. of one metal
may be mixed with two per cent. of another, and five per cent. of a third and
ninety per cent. of platina, to form the alloy required according to the purpose
intended.
The alloys resulting are suitable for various industrial purposes, though I
believe chiefly for the purposes indicated above, the precise object of my
Invention being to furnish alloys in certain fixed quantities or proportions,
according to the quality of the alloy and the purpose for which it is
required.
Having described the nature of my Invention, and the manner of per-
forming the same, I declare that what I claim as the Invention to be secured
under the herein-before in part recited Letters Patent is, the preparation and
application of the alloys above mentioned in any determined or definite propor-
tions to ornamental and useful purposes.
In witness whereof, I, the said Henry Desmoutis, have hereunto set my
hand and seal, this Fifth day of June, in the year of our Lord One.
thousand eight hundred and fifty-eight.