AN. IMPROVED PREPARATION OF COMPOSITION TO BE APPLIED TO PIGMENTS FOR THE PURPOSE OF FACILI- TATING THE DRYING OF THE SAME " AL.communication.
Year: 1853

page_text: LETTERS PATENT to-William- Edward Newton, of the Office for
Patents, 66, Chancery Lane, in the County of Middlesex, Civil
Engineer, for the Invention of "AN. IMPROVED PREPARATION OF
COMPOSITION TO BE APPLIED TO PIGMENTS FOR THE PURPOSE OF FACILI-
TATING THE DRYING OF THE SAME " AL.communication.
PROVISIONAL SPECIFICATION left by the said William Edward
Newton at the Office of the Conmissioners of Patents, with his
Petition, on the 10th August 1:853.
Spec
I, WILLIAM EDWARD NEWTON, do hereby declare the nature of the Prov
5 said Invention for "AN IMPROVED PREPARATION OR COMPOSITION TO BE
APPLIED TO PIGMENTS FOR THE PURPOSE OF. FACILITATING THE DRYING OF
THE SANE to be as follows:-
The object of this Invention is to produce a dry composition which
may in a state of powder be mixed with zinc white paint for the
O purpose of causing the same to dry more quickly when employed as a
pigment...

page_text: It is well known that a liquid or solid preparation called a "drier"
is mixed with most paints or pigments for the purpose above set forth,
but it has been found that the preparations hitherto employed for this
purpose materially impair the quality of the pigment and injure its
colour and brilliancy.
The improved preparation which I propose to employ as a drier,
and which will be found particularly applicable for zinc white paint, is
composed of sulphate of manganese, acetate of manganese, calcined
sulphate of zinc, mixed in about equal proportions and added to the
mass of white oxide of zinc.
These materials are reduced to an impalpable powder, and intimately
mixed together, and the composition is added as a drier to the pigment,
in the ordinary manner, in proportion of from one to one and a half
per cent. of the drier to the mass of the pigment.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Edward Newton in the Great Scal
Patent Office on the 10th February 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
WILLIAM EDWARD NEWTON, of the Office for Patents, 66, Chancery
Lane, in the County of Middlesex, Civil Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Tenth day of August, in the year
of our Lord One thousand eight hundred and fifty-three, in the
seventeenth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said William Edward Newton,
Her special license that I, the said William Edward Newton, my
executors, administrators, and assigns, or such others as I, the said
William Edward Newton, 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

page_text: of Man, an Invention for "AN IMPROVED PREPARATION OR COMPOSITION S
TO BE APPLIED TO PIGMENTS FOR THE PURPOSE OF FACILITATING THE DRYING
OF THE SAME," being a communication from abroad, upon the condition
(amongst others) that I, the said William Edward Newton, by an.
instrument in writing under my hand and seal, 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 Oflice within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Edward Newton, do
hereby declare the nature of the said Invention, and in what manner
the same is to be performed, to be particularly described and ascer-
tained in and by the following statement (that is to say):
The object of this Invention of "an improved preparation or com-
position to be applied to pigments for the purpose of facilitating the
drying of the same" is to produce a dry composition which may in a
state of powder be mixed with zinc white or other paint for the pur-
pose of causing the same to dry more quickly when employed as a
pigment. It is well known that a liquid or solid preparation called a
"drier" is mixed with most paints or pigments for the purposc
set forth, but it has been found that the preparations hitherto employed
for this purpose materially impair the quality of the pigment and
injure its color and brilliancy.
above
The improved preparation which I propose to employ as a drier,
and which will be found particularly applicable for zinc white paint, is
composed of sulphate of manganese, acetate of manganese, calcined
sulphate of zinc, mixed in about equal proportions and added to the
mass of white oxide of zinc.
These materials are reduced to an impalpable powder and intimately
mixed together, and the composition is added as a drier to the pigment
in the ordinary manner, in the proportion of from one to one and a
half per cent. of the drier to the mass of the pigment. The composi-
tion of an impalpable drier in powder capable of being thoroughly and
completely mixed with the substances employed in painting has already
been the object of considerable enquiry. Driers with a zinc basis, such

page_text: as litharge and sugar of lead, have the same objections as white lead,
and when they are employed in the preparation of white zinc paint
they destroy the advantages of unchangeableness and harmlessness
possessed by the latter.
Various experiments have been made for the purpose of substituting
other materials, and..a drying oil made principally with manganese,
has been proposed, but has never been successfully.carried out. The
use of..this drier often causes difficulties, both because the manner of
preparing it is not understood, and because the carriage from place to
place is extremely costly on account of leakage and other causes, and
also because the workmen complain that in many cases it-takes, away
the brilliancy of the color.
The mode of making the improved drier-in-powder to be used in;
painting, as above mentioned, will be understood by the following
description:-
'
Take part of sulphate of manganese (pure).; -
1.part of acetate of manganese. (also puré);
-1 part of calcined sulphate of zinc;
97 parts of white oxide of zinc. i
Reduce the sulphates of zinc and manganeso, and also the acetate of
manganese to a powder in a mortar so as to render them inipalpable;
then sift the powder through a metal sieve with a gauge No. 140.
Spread out the ninety-seven parts of oxide of zinc; and sprinkle
the other pulverized materials over the oxide of zinc; then, in order
that the whole should be thoroughly united, crush and mix it, in
small quantities with a wooden knife or other suitable instrument..
This operation will produce a white and impalpable drier in powder..
which when mixed in the proportion of one half or one per cent. with
the white zinc paint will increase the drying powers. of this material to
a bigh degree; it will cause it to dry in ten or twelve hours.
Having now described the Invention that has been communicated to
me by my foreign correspondent, and the best means with which I am
at present acquainted for carrying the same into effect, I would observe,
in conclusion, that although in order to give the best information in my
power I have stuted certain proportions in which I prefer to mix the

page_text: several ingredients herein-before mentioned, yet I do not mican or s
intend to confine myself rigidly thereto, as they may doubtless be varied
to some extent, and yet produce a similar result to that intended to be
effected; I would also further remark, that I am aware that some of
the ingredients herein-before mentioned have been employed for similar
purposes; I do not therefore mean or intend to claim such ingredients,
except when used in combination with other materials to produce a
preparation such as that herein described; but that which I consider to
be new, and therefore wish to claim, is, the preparation and employ-
ment of a drier such as that above described, or any other composed of
manganese, and which drier may be used not only with pigments
having a zinc basis, but with any other materials used in painting.
In witness whereof, I, the said William Edward Newton, have
hereunto set my hand and seal, the Eighth day of February,
in the year of our Lord One thousand eight hundred and fifty-
four.
Witness,
J. W. MOFFATT.
66, Chancery Lane.
W. E. NEWTON. (L.S.)