AN IMPROVED METHOD OF OBTAINING PAINTS OR PIGMENTS BY THE COMBINATION OF MINERAL SOLUTIONS AND OTHER SUBSTANCES
Year: 1841

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
BUNT DYER, of Parys Mine, in the County of Anglesea, Mine Agent, send
greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Sixteenth day of March, in the fourth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Charles Bunt Dyer, Her especial licence, full power, sole privilege and
authority, that I, the said Charles Bunt Dyer, my exors, admors, and assigns,
and such others as I, the said Charles Bunt Dyer, my exors, admors, or
assigns, should at any time agree with, and no others, from time to time and
at all times thereafter during the term of years therein expressed, should aud
lawfully might make, use, exercise, and vend, within that part of Her
Majesty's United Kingdom of Great Britain and Ireland called England; Her
Dominion of Wales, and the Town of Berwick-upon-Tweed, my Invention of
"AN IMPROVED METHOD OF OBTAINING PAINTS OR PIGMENTS BY THE COMBINATION
OF MINERAL SOLUTIONS AND OTHER SUBSTANCES;" in which said Letters Patent is
contained a proviso that I, the said Charles Bunt Dyer, shall cause a parti-
cular description of the nature of my said Invention, and in what manner the
same is to be performed, to be inrolled in Her said Majesty's High Court of
Chancery with six calendar months next and immediately after the date of the
said in part recited Letters Patent, as in and by the same, reference being
thereunto had, will more fully and at large appear.

page_text: NOW KNOW YE, that in pursuance of the said proviso, I, the said
Charles Bunt Dyer, do hereby declare that the nature of my said Invention
consists in adding to or combining with any water holding in solution either
sulphate of iron or oxide of iron, or sulphate of copper or sulphate of zinc,
or any two or more of the said mineral substances, a mixture of quick lime
and water, or a solution of any other calcareous substance, and thereby
obtaining a yellowish coloured precipitate, which may be either used in its
original state as a paint or pigment, or may be converted by calcination into a
paint or pigment of any of the colors produceable by that process. And I
declare that the manner in which the said Invention is to be performed is as
follows, that is to say :-
The waters most commonly impregnated with the required mineral solutions
before specified, and which I find of most avail for the purposes of my said
Invention, are those collected in flowing from copper, tin, and coal mines, or
which have drained from the waste or refuse heaps of such mines after expo-
sure to the atmosphere and rain, and those which have been used for washing
or cleansing copper and tin ores; and though in some places it is the practice
to cause these waters to flow into pits containing bars or pieces of iron, in
order that the copper may be precipitated from them, yet there always remains
after that process a sufficient portion of oxide of iron in a state of solution
(either existing in the waters before their passage through the copper precipi-
tation pits, or formed during that passage) to make them available for the
purpose of my said Invention. Now for effectuating the said purposes I
collect the said waters, whether they have passed through copper precipitation
pits or not, or any other similarly impregnated waters, into suitable reservoirs,
or cause them to flow, through any convenient channels, and I add to them a
solution of quick lime of a consistency similar to the common whitewash,
and in quantity about one fourth of that of the waters operated upon. A
yellowish coloured precipitate is thereby produced, which, when dried or washed,
and dried, may as before stated be either employed in its original state as a
paint or pigment, or may be converted by the ordinary process of calcination
into a paint or pigment of any of the colours produceable by that process.
solution of limestone or chalk, or any other calcareous substance, will answer
as well as a solution of quick lime, but I prefer quick lime because it is the.
cheapest and attended with the least trouble.
A
And having now described the nature of my said Invention, and the manner
in which the same is to be performed, I declare that what I claim under the
before-recited Letters Patent is the method herein-before described of obtaining
yellowish coloured paint or pigment convertible by calcination into paints.
a

page_text: or pigments or other colours, or shades of colour, by the combination of any
mineral water holding in solution either sulphate of iron or oxide of iron,
or sulphate of copper or sulphate of zinc, or any two or more of the said
mineral substances, with a mixture of quick lime and water, or a solution of
any other calcareous substance.
And such my Invention being, to the best of my knowledge and belief, entirely
new, and never before used within that part of Her said Majesty's United
Kingdom of Great Britain and Ireland called England, Her Dominion of
Wales, or the Town of Berwick-upon-Tweed, I do hereby declare this to
be my Specification of the same, and that I do verily believe this my said
Specification doth comply in all respects, fully and without reserve or disguise,
with the proviso in the said herein-before in part recited Letters Patent
contained; wherefore I hereby claim to maintain exclusive right and privilege
to my said Invention.
In witness whereof, I have hereunto set my hand and seal, this Eleventh
day of September, in the year of our Lord Oue thousand eight
hundred and forte one