Ar IMPROVEMENT IN PREPARING OR MANUFACTURING DYEING MATTER, PECULIARLY APPLICABLE TO COTTON AND OTHER VEGETABLE FIBRES, AND USEFUL WHEN DYEING AND PRINTING OTHER FIBRES AND FABRICS
Year: 1857

page_text: LETTERS PATENT to William Pickstone, of Radcliffe Bridge, near Man-
chester, in the County Palatine of Lancaster, for the Invention of "Ar
IMPROVEMENT IN PREPARING OR MANUFACTURING DYEING MATTER, PECULIARLY
APPLICABLE TO COTTON AND OTHER VEGETABLE FIBRES, AND USEFUL WHEN
DYEING AND PRINTING OTHER FIBRES AND FABRICS."-A communication.
Sealed the 2nd October 1857, and dated the 25th April 1857.
PROVISIONAL SPECIFICATION left by the said William Pickstone at the
Office of the Commissioners of Patents, with his Petition, on the 25th
April 1857.
I, WILLIAM PICKSTONE, of Radcliffe Bridge, near Manchester, in the
County Palatine of Lancaster, do hereby declare the nature of the Inven-
tion for "AN IMPROVEMENT IN PREPARING OR MANUFACTURING DYEING MATTER,
PECULIARLY APPLICABLE TO COTTON AND OTHER VEGETABLE FIBRES, AND USEFUL
WHEN DYEING AND PRINTING OTHER FIBRES AND FABRICS," to be as follows:-
This Invention has for its object an improvement in preparing or manu-
facturing dyeing matter, peculiarly applicable to cotton and other vegetable
"

page_text: fibres, and useful when dyeing and printing other fibres and fabrics, and con-
sists in the application of the coloring matter obtained from the wood and bark
of a tree which grows in the Brazils, and probably in other countries, but
which has not been used in this realm in the preparation of dyeing matters for
dyeing and printing cotton and other fibres and fabrics. The wood is of a
blackish brown color. The tree is called braûna in the Province Minas Geracs
in the Brazils, and possibly by other names in other places, and it is believed
that the botanical name is melanoxylon brauna. It has been found on ex-
periment that the coloring matter extracted when made up and used as dyes for
fibres of cotton gives to the cotton a permanent color, and that the color may
be varied according to the circumstances under which the coloring properties
are applied to the cotton fibre. The wood and bark of this tree are reduced
into dust, chips, or cuttings, and the coloring matter extracted therefrom in liko
manner to what is practised in respect to logwood; or decoctions of it may be
made (and by evaporation it may be reduced to paste, cake, or powder) either
alono or mixed with other matters and substances.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Pickstone in the Great Seal Patent Office on the
22nd October 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
PICKSTONE, of Radcliffe Bridge, near Manchester, in the County Palatine of
Lancaster, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fifth day of April, in the year of our Lord
One thousand eight hundred and fifty-seven, in the twentieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
William Pickstone, Her special licence that I, the said William Pickstone, my
executors, administrators, and assigns, or such others as I, the said William
Pickstone, 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 "As IMPROVEMENT IN PREPARING
OR MANUFACTURING DYEING MATTER, PECULIABLY APPLICABLE TO COTTON AND OTHER

page_text: VEGETABLE FIBRES, AND USEFUL WHEN DYEING AND PRINTING OTHER FIBRES AND
FABRICS," a communication, upon the condition (amongst others) that I, the
said William Pickstone, 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 William Pickstone, do hereby declare the
naturo of the 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 thereof, that is to say:
This Invention has for its object an improvement in preparing or manu-
facturing dyeing matter, peculiarly applicable to cotton and other vegetable
fibres, and useful when dyeing and printing other fibres and fabrics, and con-
sists in the application of the coloring matter obtained from the wood and bark
of a tree which grows in the Brazils, and probably in other countries, but
which has not been used in this realm in the preparation of dyeing matters
for dyeing and printing cotton and other fibres and fabrics. The wood is of a
blackish brown color, surrounded by a lighter color immediately' under the
bark. The tree is called braûna in the Province Minas Geraes in the Brazils,
and possibly by other names in other places, and the botanical name is melan-
oxylon brauna. It has been found on experiment that the coloring matter
extracted when made up and used as dyes for fibres of cotton gives to the
cotton a permanent color, and that the color may be varied according to the
circumstances under which the coloring properties are applied to the cotton
fibre. The wood and bark of this tree are reduced into dust, chips, or cuttings,
and the coloring matter extracted therefrom, in like manner to what is prac-
tised in respect to logwood, or decoctions of it may be made (and by evaporation
be reduced to paste, cake, or powder) either alone or mixed with other matters
and substances.
The colors obtained from it may be varied by changing the composition of
the dye baths, and of the mordants with which it is used, just as when using
logwood and other dye woods. This dyeing material has a great affinity for
cotton, and the colors produced by it in cotton are more permanent than those
produced by the dyeing materials heretofore employed for producing the same
and similar colors to those which it produces. The following colors may be
most advantageously produced by its use, namely, browns, drabs, slates, salmon,

page_text: buffs, fawns, and black, and the light colors so dyed are more permanent than
those produced by any other dye.
In witness whercof, I, the said William Pickstone, have hereunto
set my hand and seal, this Twenty-first day of October, in the year
of our Lord One thousand eight hundred and fifty-seven.
Witness,
GEO. MORLEY, Book-keeper,
Radcliffe.
NE
(L.S.)