IMPROVEMENTS IN LINSEED OIL FOR PAINTING, CALLED OXIGENATED OIL
Year: 1854

page_text: LETTERS PATENT to Constant François Bekaert, of No. 10, Rue de la
Victoire, in the City of Paris, for the Invention of "IMPROVEMENTS IN
LINSEED OIL FOR PAINTING, CALLED OXIGENATED OIL."-A communication.
Sealed the 4th August 1854, and dated the 25th February 1854.
PROVISIONAL SPECIFICATION left by the said Constant François Bekaert
at the Office of the Commissioners of Patents, with his Petition, on the
25th February 1854.
I, CONSTANT FRANÇOIS BEKAERT, of No. 10, Rue de la Victoire, in the City
of Paris, do hereby declare the nature of the Invention for "IMPROVEMENTS IN
LINSEED OIL FOR PAINTING, CALLED OXIGENATED OIL," to be as follows:-
The linseed oil for producing a dead paint is prepared by mixing with other
matters as follows:-Linseed oil, linseed oil manganesed, protoxide of hy-
drogen, liquid ammonia, essence of lavender, and alcohol; but for a brilliant
paint, sulfhydrique acid, soda, and potash are added, in place of the essence of
lavender and alcohol. The protoxide of hydrogen should be first rendered
mucilaginous, by the addition of farina, then salt of tartar, and linseed oil should
be added. To the compositions should also be added in small quantities white
soap, white wax, and salt of tartar. To use these compositions, the white
pigment should be first ground with essence of lavender and poppy oil, and
afterwards brought to the proper consistency by the prepared oil.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Constant François Bekaert in the Great Seal Patent Office
on the 24th August 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CONSTANT
FRANÇOIS BEKAERT, of No. 10, Rue de la Victoire, in the City of Paris, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fifth day of February, in the year of our Lord
One thousand eight hundred and fifty-four, in the seventeenth year of Her
reign, did, for Herself, Heir heirs and successors, give and grant unto me, the
said Constant François Bekaert, Her special licence that I, the said Constant
François Bekaert, my executors, administrators, and assigns, or such others as
I, the said Constant François Bekaert, 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
"IMPROVEMENTS IN LINSEED OIL FOR PAINTING, CALLED OXIGENATED OIL," commu-
nicated to me from abread, upon the condition (amongst others) that I, the
said Constant François Bekaert, by an instrument in writing under my hand
and seal, should particularly describe and ascertain the nature of the said In-
vention, 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 Constant François Bekaert, 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):-
For the manufacture of the oleagine (a preparation necessary for the manu-
facture of the oxigenated oil), take (one hundred litres) twenty-six and a half
gallons of spring water, (one kilogramme) two and a quarter lbs. of linseed, boil
the whole, and pass it through a sieve to remove the seed, and put it again on
the fire; then add to it one lb. twelve and a half ounces (eight hundred grammes)
of salt of tartar in-powder, let the whole boil gently, and then pour it into a
bath of linseed oil prepared in a vat, let it stand for one day, and then draw it
from the vat, as required. For the manufacture of the oxigenated oil for dull
painting for twenty-five and a half gallons (one hundred litres), take four and a
half lbs. (two kilogrammes) of oleagine, dissolve in it 4 ounces (125 grammes)

page_text: of dry white soap over a gentle fire, then add one lb. twelve and a half ounces
(eight hundred grammes) of white wax; let it melt and boil, then add four-
teen and a quarter ounces (four hundred grammes) of salt of tartar in powder,
and again dissolve and boil; add four and a half lbs. (2 kilogrammes) of linseed
oil, and then four and a half lbs. (2 kilogrammes) of oleagine, in which has
previously been put three and a half ounces (one hundred grammes) of man-
ganesed linseed oil, three hundred grains (twenty grammes) of liquid ammonia,
three hundred grains (twenty grammes) of essence of lavender, and five and
a half ounces (one hundred and sixty grammes) of alcohol of 40°; let it boil
till the whole becomes doughy, then pour into it fifteen and a half gallons
(sixty litres) of linseed oil, and ten and a half gallons (forty litres) of warm
oleagine; draw the whole from the boiler, and run it through a sieve.
The, manufacture of oil for brilliant painting is conducted in the same
manner as for dull painting, only instead of putting in the compound five and
a half ounces (one hundred and sixty grammes) of alcohol, and three hundred
grains (twenty grammes) of the essence of lavender, the following must be
used: Two and five-sixth ounces (eighty grammes) sulfhydrique acid; 2
ounces (eighty grammes) of soda of commerce; three hundred and ten grains
(twenty grammes) of potash of commerce.
In witness whereof, I, the said Constant François Bekaert, have hereunto
set my hand and seal, this Eighteenth day of August, in the year of our
Lord One thousand eight hundred and fifty-four.
Witness,
OSWALD,
à Paris.
CONSTANT F. BEKAERT. (LS.)