IMPROVEMENTS IN THE MODE OF APPLYING MINERAL SODA TO THE SCOURING AND LUBRICATION OF TEXTILE MATTERS AND MACHINERY, AND IN THE MANUFACTURE OF SOAP
Year: 1865

page_text: LETTERS PATENT to Leopold Joseph Bouchart, of No. 18, Rue de
l'Echiquier, Paris, in the Empire of France, Chemist, for the Invention
of "IMPROVEMENTS IN THE MODE OF APPLYING MINERAL SODA TO THE
SCOURING AND LUBRICATION OF TEXTILE MATTERS AND MACHINERY, AND IN
THE MANUFACTURE OF SOAP."
Sealed 'the 11th May 1866, and dated the 4th December 1865.
PROVISIONAL SPECIFICATION left by the said Leopold Joseph Bouchart
at the Office of the Commissioners of Patonts, with his Petition, on
the 4th December 1865.
I, LEOPOLD JOSEPH BOUCHART, of No. 18, Rue de l'Echiquier, Paris, in
'the Empire of France, Chemist, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN THE MODE OF APPLYING MINERAL SODA TO THE
SCOURING AND LUBRICATION OF TEXTILE MATTERS AND MACHINERY, AND IN THE
MANUFACTURE OF SOAP," to be as follows:-
My Invention relates to certain improvements in the application of the
various mineral salts of soda for scouring and dressing textile fabrics, and
also applicable as a lubricating agent for machinery, the modus operandi being
as follows:-
In scouring textile fabrics, silk cocoons, and spun goods I make use of a

page_text: degrees (centigrade) 1 part of potash and 1 part of the alkali of urine; both
the latter named salts may be replaced by an equal weight of soda, but with
a less good result. In fulling cloth the water should be at 30° or 40°
(centigrade) and 5 parts of the soda salt be used to the 100 parts of water.
In dressing wool I employ a mixture of 35 pints of water at a temperature
of 20° to 25°, two pounds of soda, and half the usual quantity of oil; this
quantity is sufficient for 200 pounds of wool.
In carding wool, to every 200 pounds of wool I use one to one and a half
per cent. of fat oil, half a pound of soda dissolved in about 9 pints of water
at 20° to 25° (centigrade).
As a lubricating agent for machinery I employ 50 pounds of soda salt
dissolved in 44 pints of water at a temperature of 40° to 45°, added to 2,000
pounds of grease or fat at boiling temperature.
In the manufacture of soap the addition of 5 to 10 per cent. of the mineral
soda salt dissolved in warm water has the effect of rendering the soap of a
softer character.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Leopold Joseph Bouchart in the Great Seal Patent Office
on the 4th June 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, LEOPOLD
JOSEPH BOUCHART, of No. 18, Rue de l'Echiquier, Paris, in the Empire of
France, Chemist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria by Her Letters
Patent, bearing date the Fourth day of December, in the year of our Lord One
thousand eight hundred and sixty-five, in the twenty-ninth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the
said Leopold Joseph Bouchart, Her special licence that I, the said Leopold
Joseph Bouchart, my executors, administrators, and assigns, or such others
as I, the said Leopold Joseph Bouchart, 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 THE MODE OF APPLYING MINERAL SODA TO THE SCOURING
AND LUBRICATION OF TEXTILE MATTERS AND MACHINERY, AND IN THE MANUFACTURE
or SOAP," upon the condition (amongst others) that I, the said Leopold
Joseph Bouchart, my executors or administrators, by an instrument in writing

page_text: 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 Leopold Joseph Bouchart, do hereby
declare the nature of my said Invention, and in what. manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement, that is to say:-
My Invention relates to certain improvements in the application of the
various mineral salts of soda for scouring and dressing textile fabrics, and also
applicable as a lubricating agent for machinery as well as in the manufacture
of soap, the modus operandi is as follows:-
For scouring textile fabrics, silk cocoons, and spun goods I make use of a
solution consisting of 100 parts or pints of water at a temperature of 25 to
30 degrees centigrade, 1 part or 2 pounds of mineral soda, 1 part or 2 pounds
of potash, and 1 part or 2 pounds of the alkali of urine; both the latter
named salts may be replaced by an equal weight of soda, but with an indifferent
result.
In scouring cloth the same mixture may be employed, or 5 parts or
10 pounds of mineral soda, added to 100 pints of water at a temperature of
from 30 to 40 degrees centigrade, the cloth must be allowed to remain a
sufficient length of time in the bath to admit of the separation of the oily
substance therefrom, and the heat should be regulated according to the
necessity of the case and the nature of the grease that has been employed.
In dressing wool I employ a mixture of 2 pounds of mineral soda, added
to from 10 to 12 up to 35 pints of water at a temperature of from 20 to 25
degrees centigrade; when the soda is thoroughly dissolved add half the usual
quantity of oil employed, this mixture will be sufficient for dressing 200
pounds of wool, alpaca, or other similar material, the whole being poured
thereon.
In heckling wool, to every 200 pounds thereof I use from 1 to 1 per cent.
of fat oil and half a pound of soda, dissolved in from 2 to 9 pints of water at
from 20 to 25 degrees centigrade.
As a lubricating agent for machinery I employ 50 pounds of mineral soda
dissolved at from 44 to 45 degrees centigrade; this mixture is added by
degrees to about 200 pounds of grease or fat at boiling temperature, at
the same time stirring the grease so that the whole may be thoroughly
mixed.

page_text: In fulling cloth I take 10 pounds of mineral soda dissolved in about 190
pounds of water, at a temperature of from 30 to 40 degrees; this mixture is
poured upon the article in the fulling machine.
In the manufacture of soap, the addition of 5 to 10 per cent. of the mineral
soda dissolved in warm water has the effect of rendering the soap of a softer
character, and at the same time reduces the usual quantity of soda, salt, or
potash generally employed from 5 to 10 per cent.
For toilet soaps the use of mineral soda in powder, pure or otherwise,
is preferable to those manufactured with potash or alkalies, 'being less acid,
half a pound of this will produce a bath as powerful as the best alkaline
baths.
i
Having thus described my Invention, what I claim and desire to secure 'by
Letters Patent is, the application of mineral sodas to the various purposes as
herein-before explained, and in place of the ordinary vegetable södas as in
present 'use, reserving to myself the right of varying the proportions according
to the necessities of the case, which may readily be done without departing
from the principle of my Invention.
'In Withess whereof, I, the said 'Leopold Joseph Bouchart, have here-
unto set my hand and seal, this Fourteenth day of May, in the year
of our Lord One thousand eight hundred and sixty-six.
Witness,
J. CLAES,
Civil Engineer,
18, Rue de l'Echiquier,
Paris.
L. J. BOUCHART. (L.S.)