IMPROVEMENTS IN THE MANUFACTURE AND PRODUCTION OF CERTAIN ALLOYS CONTAINING CADMIUM
Year: 1862

page_text: LETTERS PATENT to Charles Denton Abel, of No. 20, Southampton
Buildings, Chancery Lane, in the County of Middlesex, Patent Agent, for
the Invention of "IMPROVEMENTS IN THE MANUFACTURE AND PRODUCTION OF
CERTAIN ALLOYS CONTAINING CADMIUM."-A communication from abroad by
Henri Catherine Camille de Ruolz and Anselme Louis Marie Fontenay,
both residing at Paris, in the Empire of France.
PROVISIONAL SPECIFICATION left by the said Charles Denton Abel.at
the Office of the Commissioners of Patents, with his Petition, on the
17th April 1862..
I, CHARLES DENTON ABEL, of No. 20, Southampton Buildings, Chancery
Lane, in the County of Middlesex, Patent Agent, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN THE MANUFACTURE AND
PRODUCTION OF CERTAIN ALLOYS CONTAINING CADMIUM," to be as follows
The object of this Invention is the formation of various alloys of cadmium
with gold, silver, copper, or other metals. "The alloys of silver, copper, and
cadmium, besides being useful for various other purposes, are particularly
adapted for forming into wire by drawing, on account of their great ductility.
The alloys of gold, copper, and cadmium are applicable to the manufacture of
wire by drawing and to jewellery generally. These alloys are classified into
two series according to their proportions, to be hereafter, described.

page_text: All the herein-before described alloys of gold or silver are applicable to the
processes of covering or plating.
MODE OF OPERATION. Each of the above-named alloys should first be care-
fully melted down in a covered brasque crucible, or in any vessel having a
carbonaceous lining, and should be remelted subsequently in an ordinary
crucible, or by preference in a graphite crucible, together with charcoal or
resin dust and borax. If, notwithstanding the precautions taken, it should be
found that a considerable proportion of the cadmium had been volatilized, the
alloy should be remelted a third time with an excess of cadmium, so as to
bring it to the required per-centage.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Charles Denton Abel in the Great Seal Patent Office on the
16th October 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
DENTON ABEL, of No. 20, Southampton Buildings, Chancery Lane, in the
County of Middlesex, Patent Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Seventeenth day of April, in the year of our Lord
One thousand eight hundred and sixty-two, in the twenty-fifth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Charles Denton Abel, Her special licence that I, the said Charles
Denton Abel, my executors, administrators, and assigns, or such others
as I, the said Charles Denton Abel, 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 AND PRODUCTION OF CERTAIN
ALLOYS CONTAINING CADMIUM," a communication to me from abroad by Henri
Catherine Camille de Ruolz and Anselme Louis Marie Fontenay, both residing
at Paris, in the Empire of France, upon the condition (amongst others) that 1;
the said Charles Denton Abel, my executors or administrators, by an instru-
ment 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 imme-
diately after the date of the said Letters Patent.

page_text: This alloy gives a malleable and ductile metal of a different shade of green.
The above-described alloys of the second series are particularly applicable to
jewellery and the manufacture of wire by drawing.
All the herein-before described alloys of gold or silver are applicable to the
processes of covering or plating.
MODE OF OPERATION. Each of the above-named alloys should first be care-
fully melted down in a covered brasque crucible, or in any vessel having a
carbonaceous lining, and should be remelted subsequently in an ordinary
crucible, or by preference in a graphite crucible, together with charcoal or
with resin dust and borax. If, notwithstanding the precautions taken, it should
be found that a considerable proportion of the cadmium has been volatilized,
the alloy should be remelted a third time with an excess of cadmium, so as to
bring it to the required per-centage.
Having described the nature of this Invention as communicated to me by
my foreign correspondents, what I claim is,-
Firstly, the manufacture and production of alloys containing cadmium, as
hercin-before set forth.
Secondly, the application of the said alloys containing cadmium to the
various branches of arts and manufactures.
In witness whereof, I, the said Charles Denton Abel, have hereunto set
my hand and seal, this Sixteenth day of October, in the year of our.
Lord One thousand eight hundred and sixty-two.
CHARLES DENTON ABEL. (LS.)