An IMPROVED METHOD OF EXTRACTING GOLD FROM AURIFEROUS ANTIMONY ORES, ANTIMONIAL COMPOUNDS, AND ANTIMONIAL MIXTURES
Year: 1874

page_text: LETTERS PATENT to Tyndall Bright, of Liverpool, in the County of
Lancaster, Merchant and Shipowner, for the Invention of “An
IMPROVED METHOD OF EXTRACTING GOLD FROM AURIFEROUS ANTIMONY ORES,
ANTIMONIAL COMPOUNDS, AND ANTIMONIAL MIXTURES."-A communication
from abroad by Reginald Bright, of Melbourne, Victoria, Australia,
Merchant, and John Cosmo Newbery, of the same Place, Analytical
Chemist:
PROVISIONAL SPECIFICATION left by the said Tyndall Bright at the
Office of the Commissioners of Patents, with his Petition, on the
24th February 1874.
I, TYNDALL BRIGHT, of Liverpool, in the County of Lancaster,
5 Merchant and Shipowner, do hereby declare the nature of the said
Invention for "AN IMPROVED METHOD OF EXTRACTING GOLD FROM AURIFEROUS
ANTIMONY ORES, ANTIMONIAL COMPOUNDS, AND ANTIimonial Mixtures," to be as
follows, the same being a communication to me from abroad by Reginald

page_text: Bright, of Melbourne, Victoria, Australia, Merchant, and John Cosmo
Newbery, of the same Place, Analytical Chemist :-
Metallic antimony is fused with ores, compounds, or mixtures, and
the gold thereby alloyed with the metallic antimony. The alloy falls to
the bottom of the material under treatment, from whence it can casily
be removed. When the alloy becomes sufficiently rich in gold, it may
be by repeated use, such gold is removed by oxidizing the antimony in
any of the ways at present known or suitable for the purpose.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Tyndall Bright in the Great Seal Patent Office on
the 24th August 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, TYNDALL
BRIGHT, of Liverpool, in the County of Lancaster, Merchant and Ship
Owner, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fourth day of February, in the
year of. our Lord One thousand eight hundred and seventy-four, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Tyndall Bright, Her special
licence that I, the said Tyndall Bright, my executors, administrators, and
assigns, or such others as I, the said Tyndall Bright, my executors, ad-
ministrators, 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 IMPROVED METHOD OF
EXTRACTING GOLD PROM AURIFEROUS ANTIMONY ORES, ANTIMONIAL COMPOUNDS, AND
ANTIMONIAL MIXTURES," a communication to him from abroad by Reginald
Bright, of Melbourne, Victoria, Australia, Merchant, and John Cosmo
Newbery, of the same Place, Analytical Chemist, upon the condition
(amongst others) that I, the said Tyndall Bright, my executors or admini-
strators, by an instrument in writing under my, or their, or one of
their hands and seals, should particularly describe and ascertain the

page_text: 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 Tyndall Bright, 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
following statement, that is to say :-
Metallic antimony is fused with ores, compounds, or mixtures; and the
gold thereby alloyed with the metallic antimony. The alloy falls to the
bottom of the material under treatment, from whence it can easily be
removed. When the alloy becomes sufficiently rich in gold, it may be
by repeated use, such gold is removed by oxidizing the antimony in any
of the ways at present known or suitable for the purpose.
The material to be treated is fused by itself in a crucible or furnace.
The metallic antimony to be added is crushed or ground into a fine
powder and sprinkled over the fused material so as to cover as large a
proportion of its surface as possible. The particles of metallic antimony
collect the gold in their descent through the material, the finer therefore
the particles of gold the greater the quantity of antimony required to
collect it.
In practice fifty pounds of powdered metallic antimony will be found
amply sufficient for every hundred pounds of material, whether such
material be rich or poor, or whatever be the fineness of the particles of
gold. The operator however must to a great extent be left to judge for
himself as to the necessary quantity of metallic antimony to be added
according to the richness of the material and the fineness of the particles
of gold.
When the fusion is completed the alloy should be analysed to
determine whether it contains sufficient gold to pay for oxidation, if not
such alloy is crushed or ground and added to material in the manner
described for metallic antimony until sufficiently rich in gold.
it
Having now described the nature of the said Invention, and particu-
larized the same in such manner that others will be enabled to carry
into practice, I would have it understood that I do not confine myself to

page_text: details, but claim the improved method of extracting gold from
auriferous antimony ores, antimonial compounds, and antimonial
mixtures, substantially as herein described and explained.
In witness whereof, I, the said Tyndall Bright, have hereunto set
my hand and seal, this Twenty-first day of August, in the year 5
of our Lord One thousand eight hundred and seventy-four.
In the presence of
JAS. JOHNSON,
Patent Office,
Clayton Square,
Lincol
TYNDALL BRIGHT. (L.S.)