AN IMPROVED COMPOSITION FOR PAINTING
Year: 1864

page_text: LETTERS PATENT to Marie Destrem, of No. 8, Rue Lamartine, Paris, in
the Empire of France, Gentleman, for the Invention of "AN IMPROVED
COMPOSITION FOR PAINTING."
Sealed the 9th May 1865, and dated the 16th November 1864..
PROVISIONAL SPECIFICATION left by the said Maria Destrem, at the
Office of the Commissioners of Patents, with his Petition, on the 16th
November 1864.
I, MARIE DESTREM, of No. 8, Rue Lamartine, Paris, in the Empire of
France, Gentleman, do hereby declare the nature of the said Invention for
"AN IMPROVED COMPOSITION FOR PAINTING," to be as follows:---
My improved composition for painting consists of two compounds; one a
liquid, the other of a thickish consistence, which admit of ready combination
with all colours, forming with them a paint almost free from smell and at less,
than a third of the cost.
The first or liquid compound is thus prepared; 100 parts of distilled water,
are boiled, and then poured gradually on 23 parts of oxalic acid in crystals,
1. part of ammonia being introduced at the same time. The whole is well.
stirred for a short time and allowed to cool, when 820 parts of water are
added and 56 parts of caustic soda; this, after being well agitated is allowed
to settle, when the .clear liquid can be drawn off.

page_text: The second compound consists of 275 parts of powdered white lead, 115
parts of powdered litharge, and 20 parts of zumatic, which must be well mixed
with 70 parts of linseed oil, and 370 parts of prepared soap, 130 parts of fat
oil, and 20 parts of copal siccative. Thus prepared this compound has a
yellowish hue, to avoid which, when required for delicate colours the com-
pound can be prepared thus:-385 parts of powdered white lead are well
mixed with 75 parts of white oil, 385 parts of prepared.soap, and 75 parts of
copal siccative.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filet!
by the said Marie Destrem, in the Great Seal Patent Office on the 1
15th May 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, MARIE
DESTREM, of No. 8, Rue Lamartine, Paris, in the Empire of France, Gentle-
man, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters 1
Patent, bearing date the Sixteenth day of November, in the year of our
Lord One thousand eight hundred and sixty-four, in the twenty-ninth year
of Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, the said. Marie Destrem, Her special licence that I, the said
Marie Destrem, my executors, administrators, and assigns, or such others 2
as I, the said Marie Destrem, 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 2
Invention for "AN IMPROVED COMPOSITION FOR PAINTING," upon the condition
(amongst others) that I, the said Marie Destrem, my executors or adminis-
trators, 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, 8
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 Marie Destrem, do hereby declare
the nature of my said Invention, and in what manner the same is to be 3

page_text: performed, to be particularly described and ascertained in and by the ful-
lowing statement, that is to say:-
My improved composition for painting consists of two compounds, one a
liquid, the other of a thickish consistence, which admit of ready combination
with all colours, forming with them a paint almost free from smell and at less
than a third of the usual cost of paint.
.
The first or liquid compound is thus prepared:One hundred parts of
distilled water are boiled and then poured gradually on. twenty-three parts of
oxalic acid in crystals, one part of ammonia being introduced at the same
time; this is well stirred for a short time and allowed to cool, when eight
hundred and twenty parts of water are added and fifty-six parts of caustic
soda; this, after being well agitated is allowed to settle, when the clear liquid
can be drawn off.
:.
The second-compound consists of two hundred and seventy-five parts of
powdered white lead, one hundred and fifteen parts of powdered litharge, and
twenty parts of zumatic, which must be well mixed with seventy parts of
linseed oil and three hundred and seventy parts of prepared soap, one hundred
and thirty parts of boiled or fat oil, and twenty parts of copal siccative. Thus
prepared this compound has a yellowish hue, to avoid which when required
for delicate colours the compound can be prepared thus :-Three hundred and
eighty-five parts of powdered white lead are well mixed with seventy-five parts
of white oil, three hundred and eighty-five parts of prepared soap, and seventy-
five parts of copal siccative.
In the liquid compound, in place of the oxalic acid sugar may be employed,
the soda can also be replaced by potass in equivalent quantities; in short,
many of the bodies may be replaced by their chemical equivalents with similar
result; those however herein-before indicated appear to me best suited to
produce a good result.
The prepared soaps above mentioned consist of a potash and fat soap
silicatised by a small quantity of anhydrous silicate of potash. In the white
paste employed for the more delicate colours the fat is replaced by a propor-
tionate quantity of sweet almond or cocoa-nut oil. In employing the oil a
larger quantity of the potash may be absorbed.
The zumatic herein-before mentioned is a white powdered siccative well
known in French commerce; the copal siccative also mentioned consists of
eleven parts of gum copal dissolved in nine parts of essence of turpentine.
When required for use the colouring matter is ground down with either the
first or second paste, and afterwards thinned out with the liquid compound.
:

page_text: .. Having now fully described my Invention, what I claim and desire to
secure by Letters Patent is, the improved composition for painting combined
as herein-before described; at the same time I do not limit myself to the
precise details as they may be modyfied, either by substituting chemicals
having a like nature, or by varying the quantities to suit certain cases without
departing from my Invention.
In witness whereof, I, the said Mario Destrem, have hereunto set my
hand and seal, this Eleventh day of May, in the year of our Lord
One thousand eight hundred and sixty-five.