IMPROVEMENTS IN VULCANIZING AND COLORING CAOUTCHOUC, AND IN THE PREPARATION OF CAOUTCHOUC PAINTS AND COLORS
Year: 1859

page_text: LETTERS PATENT to Richard Archibald Brooman, of 166, Fleet Street,
in the City of London, E.C.,. Patent Agent, for the Invention of
"IMPROVEMENTS IN VULCANIZING AND COLORING CAOUTCHOUC, AND IN THE
PREPARATION OF CAOUTCHOUC PAINTS AND COLORS."-A communication from
abroad by Theophile Julien Laballe, of Paris.
Sealed the 19th October 1859, and dated the 26th April 1859.
PROVISIONAL SPECIFICATION left by the said Richard Archibald Brooman
at the Office of the Commissioners of Patents, with his Petition, on
the 26th April 1859.
I, RICHARD ARCHIBALD BROOMAN, of 166, Fleet Street, in the City of
London, E.C., Patent Agent, do hereby declare the nature of the said Inven-
tion for "IMPROVEMENTS IN VULCANIZING AND COLORING CAOUTCHOUC, AND IN THE
PREPARATION OF CAOUTCHOUC PAINTS AND COLORS," (communicated to me from
abroad by Theophile Julien Laballe, of Paris,) to be as follows:-
I vulcanize caoutchouc by passing it three or four times at intervals of about
24 hours in or through a bath prepared six to eight days beforehand, by placing
five per cent. of red or black sulphuret of mercury, or two per cent. of bromate
of sulphur (bromure de soufre) in benzine. I next immerse the caoutchouc
treated as above in a chloride of lime bath prepared some six or eight days
previously, and containing about four pounds of chloride of lime to eight quarts
of water. On removal from this bath, I wash the caoutchouc in clear

page_text: water, and leave it to dry for about eight days exposed to a temperature of
from 60° to 70° Fabr.
For the coloring of caoutchouc, the caoutchouc is first dissolved in benzine,
turpentine, olive oil, or other solvent, and to produce the following colors, the
ingredients in or about the proportions stated are used.
For white, to every twenty pounds of the solution of caoutchouc, add four
pounds of zinc white.
For blue, to every 20 lbs. of the solution, 2 lbs. of ultramarine.
,, red, to every 24 lbs. of solution, 2 lbs. of sulphate of mercury.
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light brown, to every 24 lbs. of solution, 2 lbs. of orpiment.
chocolate, to every 200 lbs. of solution, 30 lbs. of ultramarine, and
40 lbs. of sulphate of mercury.
green, to every 200 lbs. of solution, 30 lbs. of ultramarine, and 40 lbs.
of chrome yellow.
These preparations will only be fit for use after a lapse of about eight
lays.
Sheets of caoutchouc are stretched and covered with two coats of zinc white,
nd upon this foundation the desired colors may be produced by the applica-
ion of from three to five coats of the color required. Before applying any
oat, that previously applied must be quite dry, and there should be an interval
f at least 24 hours between the laying on of every successive coat.
The Invention also consists in preparing caoutchouc paints or colors. Ordi-
ary paints being liable to crack from not being sufficiently elastic, the
nventor mixes with them caoutchouc or gutta percha dissolved in benzine,
y preference, or in turpentine, poppy oil, olive oil, or linseed oil.
In the preparation of the elastic colors, and for coloring caoutchouc, minerals
nly are used, sulphurets or oxides, and all the colors are manipulated cold.
To give brilliancy to the surface of the caoutchouc or to the elastic colors,
he Inventor uses a varnish prepared with caoutchouc.
The caoutchouc colors may be used for paintings and frescoes, for the
reservation of buildings and structures, for decorative purposes generally,
nd for preserving iron and other metals from oxidation, and for all other
urposes for which paints are employed.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Richard Archibald Brooman in the Great Seal Patent
Office on the 26th October 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD
ARCHIBALD BROOMAN, of 166, Fleet Street, in the City of London, E.C.,
Patent Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-sixth day of April, in the year of our Lord
One thousand eight hundred and fifty-nine, in the twenty-second year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Richard Archibald Brooman, Her special licence that I, the said Richard
Archibald Brooman, my executors, administrators, and assigns, or such
others as I, the said Richard Archibald Brooman, my executors, adminis-
trators, 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 In-
vention for "IMPROVEMENTS IN VULCANIZING AND COLORING CAOUTCHOUC, AND IN
THE PREPARATION OF CAOUTCHOUC PAINTS AND COLORS," (communicated to me
from abroad by Theophile Julien Laballe, of Paris,) upon the condition
(amongst others) that I, the said Richard Archibald Brooman, 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 Richard Archibald Brooman, do hereby
declare the nature of the said Invention and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement thereof, that is to say:-
The Inventor vulcanizes caoutchouc by passing it three or four times at
intervals of about 24 hours in or through a bath prepared six to eight days
beforehand, by placing five per cent. of red or black sulphuret of mercury, or
two per cent. of bromate of sulphur (bromure de soufre) in benzine. Ho-
next immerses the caoutchouc treated as above in a chloride of lime bath
prepared some six or eight days previously, and containing about four pounds.

page_text: chloride of lime to eight quarts of water. On removal from this bath, in
ich he allows it to remain about twelve hours, he washes the caoutchouc
clear water, and leaves it to dry for about eight days exposed to a tempe-.
ure of from 60° to 70° Fahrenheit.
For the coloring of caoutchouc :-A portion of caoutchouc is first dissolved
benzine trpentine, olive oil, or other solvent, and to produce the following
ors, the ingredients in or about the proportions stated are used:-
For white, to every twenty pounds of the solution of caoutchouc, add four
pounds of zinc white.
For blue, to every twenty pounds of the solution, two pounds of ultramarine. 1
, red, to every twenty-four pounds of solution, two pounds of sulphate of
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mercury.
light brown, to every twenty-four pounds of solution, two pounds of
orpiment.
chocolate, to every two hundred pounds of solution, thirty pounds of 1
ultramarine, and forty pounds of sulphate of mercury.
green, to every two hundred pounds of solution, thirty pounds of ultra-
marine, and forty pounds of chrome yellow.
It is necessary before adding each colour to the solution to stir the latter with
rush, and afterwards to stir the mixture two or three times a day. The 2
ve preparations will only be fit for use after a lapse of about eight days,
1 before they are used they should be stirred for about fifteen minutes.
eets of caoutchouc are stretched or extended and covered with two coats of
c white at intervals of about twenty-four hours, and upon this foundation
desired colors may be produced by the application of from three to five 2
ts of the color required. To obtain a rich green five or six coats of the
en mixture should be applied. Before applying any coat, that previously
lied must be quite dry, and there should be an interval of at least twenty-
r hours between the laying on of the successive coats. After the desired
mber of coats have been applied, the sheets of caoutchouc should be allowed 3
remain in their stretched or extended state for about six or eight days, and
ot for that time at a temperature of from 60° to 70° Fahrenheit. When
coloring of the sheets is completed, the Inventor gilds, silvers, or otherwise
aments them, employing in some cases specially prepared paints or colors
the purpose:
The Invention also consists in preparing caoutchouc paints or colors. Ordi-
y paints being liable to crack from not being sufficiently elastic, the
ventor mixes with them caoutchouc or gutta percha dissolved in benzine by
eference, or in turpentine, poppy oil, olive oil, or linseed oil.
3

page_text: In the preparation of the elastic colours and for coloring caoutchouc, minerals
only are used, sulphurets or oxides, and all the colors are manipulated cold.
To give brilliancy to the surface of the caoutchouc or to to the elastic
colours, the Inventor uses a varnish prepared with caoutchouc.
The caoutchouc paints or colors may be used for paintings and frescoes, for
the preservation of buildings and structures, for decorative purposes generally,
and for preserving iron and other metals from oxidation, and for all other
purposes for which paints are employed.
And having now described the nature of the said Invention and in what
manner the same may be performed, I declare that I claim, first, the method
of vulcanizing caoutchouc by passing it successively through baths formed first
of benzine, bromate of sulphur, and red or black sulphuret of mercury, and
next of chloride of lime and water as herein-before described.
Secondly, the preparation and use of coloring compounds, and of paints and
colors, in the manner and for the purposes herein-before described.
In witness whereof, I, the said Richard Archibald Brooman, have
hereunto set my band and seal, this Twenty-sixth day of October, One
thousand eight hundred and fifty-nine.