OBTAINING COLOURING MATTER AS SUBSTITUTE FOR ANILINE. COLOURS
Year: 1864

page_text: LETTERS PATENT to D'Herman Lomer, of Brussels, Belgium, for the
Invention of "OBTAINING COLOURING MATTER AS SUBSTITUTE FOR ANILINE.
COLOURS."
Sealed the 23rd September 1864, and dated the 21st April 1864.
PROVISIONAL SPECIFICATION left by the said D'Herman Lomer at the
Office of the Commissioners of Patents, with his Petition, on the 21st
April 1864.
I, D'HERMAN LOMER, of Brussels, Belgium, do hereby declare the nature of
the said Invention for "OBTAINING COLOURING MATTER AS SUBSTITUTE FOR
ANILINE COLOURS," to be as follows:
I take a mixture of aloes and bitumen of Judae, to which mixture I
add in suitable proportions nitro-muriatic acid; I then heat the mixture with
sulphuret of carbon in a closed vessel, and under pressure until the desired
color is obtained. Various shades of colour are obtained according to the
time, heat, and pressure to which the matter is submitted. The colouring
mätter so produced can be crystallised or reduced to powder, and can be used
for dying or printing as substitute for aniline colours. The proportion in
which the bitumen and nitro-muriatic acid are used are, part by weight of
bitumen and 7 parts nitro-muriatic acid; the nitro-muriatic acid consists of
1 chemical equivalent of nitric acid and 2 chemical equivalent of muriatic
acid.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said D'Herman Lomer in the Great Seal Patent Office, on the
24th September 1864.
TO ALL TO WHOM THESE PRESENTS. SHALL COME, I, D'HERMAN
LOMER, of Brussels, Belgium, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-first day of April, in the year of our Lord
One thousand eight hundred and sixty-four, in the twenty-seventh year of Her
reign, did, for Herself, Her heirs and successors, give.and grant unto me, the
said D'Herman Lomer, Her special licence that I, the said D'Herman Lomer,
my executors, administrators, and assigns, or such others as I, the said
D'Herman Lomer, 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
"OBTAINING COLOURING MATTER AS SUBSTITUTE FOR ANILINE COLOURS," upon
the condition (amongst others) that I, the said D'Herman Lomer, my
executors or administrators, by an instrument in writing under my, or their,
or one of their hands and seals, should particularly describe and ascer-
tain 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 D'Herman Lomer, do hereby declare,
the nature 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 —
The object of this Invention is an improved method of obtaining colouring
matters from aloes and bitumen of India, and this colouring matter has a very.
striking resemblance to and with suitable mordants is quite equal to colors
derived from aniline in brilliancy and variety of shade.
The process which I find to answer best for producing this improved
colouring matter is as follows:-I take thirty-five ounces of aloes rocotrina
and thirty-five ounces of bitumen of India; these substances are ground and
sifted, and the fine powder is treated in an earthenware vessel with ten times
its weight of nitric acid, of the specific gravity of 1.230. This acid is added
in-small portions at a time till the whole quantity has been introduced, and

page_text: then the resulting product is evaporated to dryness. This dry resinous mass
must be pulverised, and is then introduced into a suitable metallic boiler, capable
of sustaining an internal pressure of at least twelve atmospheres, and at the
same time sulphuret of carbon amounting to ten times the weight of the
powder is also put into the boiler, and the lid of the boiler is firmly screwed
on, and a gentle heat applied. After twelve hours' application of heat a
portion of the contents of the boiler is removed for examination, and this
operation is repeated till on examination the required shade of color is
obtained.
And what I claim as my Invention is, an improved method of obtaining
colouring matter from aloes and bitumen of India as substitute for aniline
colours.
In witness whereof, I, the said D'Herman Lomer, have hereunto set
my hand and seal, this 24th day of Sep', in the year of our Lord
One thousand eight hundred and sixty-four.
D'HERMAN LOMER. (L.S.)