AN IMPROVED COMPOSITION FOR RENDERING TISSUES, WOOD, AND COMBUSTIBLE MATERIALS UNINFLAMMABLE
Year: 1882

page_text: LETTERS PATENT to Lorentz Albert Groth K.G.V. Civil Engineer and
proprietor of the Scandinavian Patent Office under the firm of L. A. Groth
& Co 30 Finsbury Pavement London E.C. for an invention of
« AN
IMPROVED COMPOSITION FOR RENDERING TISSUES, WOOD, AND
COMBUSTIBLE MATERIALS UNINFLAMMABLE"-A communication from abroad.
OTHER
PROVISIONAL SPECIFICATION left by the said Lorentz Albert Groth at
the Office of the Commissioners of Patents on the 27th March 1882.
LORENTZ ALBERT GROTH K.G.V. Civil Engineer and Proprietor of the
Scandinavian Patent Office under the firm of L. A. Groth & Co. 30 Finsbury
Pavement London E.C. AN IMPROVED COMPOSITION FOR RENDERING TISSUES,
WOOD AND OTHER COMBUSTIBLE MATERIALS UNINFLAMMABLE A communication
from abroad by Paul Hosemann of Berlin in the Empire of Germany.
"
The composition forming the subject of this invention is made as follows
To a solution of chloride of calcium chloride of magnesium or chloride of
aluminium of a strength of about 15" to 30" Beaume is added about 1 Kilogramme
of Hydrochloric acid for each 75 to 100 Kilogrammes of the said solution the
mixture is then well stirred and while being stirred 10 to 30 Kilogrammes of
potatoe starch is added thereto. This mixture is heated to the boiling point and
to it are added 5 Kilogrammes of soap stone which has been stirred into
10 Kilogrammes of water. There are then put into the boiler one after another
the following ingredients, about 1 Kilogramme of sulphate of ammonia dissolved
in 15 Kilogrammes of water and 3 Kilogrammes of soluble glass mixed in
30 Kilogrammes of water and finaly about 5 Kilogrammes of double sulphate
of soda or lime the whole is then stirred for about half an hour while being kept
warm.

page_text: There is thus formed a white shining slimy mass which may be used like
starch or as a paint and material impregnated or painted with it is rendered
uninflammable.
The proportions of the ingredients vary as above specified according to the
degree of the chloride and the consistence it is desired to give to the resulting
mass.
A sumpler composition is obtained by pouring potatoe starch into the clear
solution of chloride of calcium (or other chloride) which is taken at about 30° Beaume
strength and heated up to 60° Reamur. After well stirring and warming for
about an hour soluble glass to the extent of 1 to 2 per cent. of the weight of the
whole mass is added and neutralized by the addition of any suitable acid or
super salt.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent &
of an Order of the Lord Chancellor filed by the said Lorentz Albert Groth in
the Great Seal Patent Office on the 27th October 1882.
LORENTZ ALBERT GROTH, K.G.V. Civil Engineer and Proprietor of the
Scandinavian Patent Office under the firm of L. A. Groth & Co 30 Finsbury
Pavement London E.C. "AN IMPROVED COMPOSITION FOR RENDERING TISSUES,
WOOD AND OTHER COMBUSTIBLE MATERIALS UNINFLAMMABLE." A communication
from abroad by H. R. Paul Hosemann of Berlin, in the Empire of Germany.
The composition forming the subject of this invention is made as follows:-
To a solution of chloride of calcium, chloride of magnesium, or chloride of
aluminium of a strength of about 15" to 30° Beaumé is added about 1 kilo-
gramme of Hydro-chloric acid for each 75 to 100 kilogrammes of the said solution;
the mixture is then well stirred, and while being stirred 10 to 30 Kilogrammes
of potatoe starch is added thereto. This mixture is heated to the boiling
point, and to it are added 5 kilogrammes of soap stone, which has been
stirred into 10 kilogrammes of water. The stirring and heating is continued
while there are then put into the boiler, one after another, the following
ingredients, about 1 kilogramme of sulphate of ammonia dissolved in 5 kilogrammes
of water and 3 kilogrammes of soluble glass mixed in 30 kilogrammes of water,
and finally about 5 kilogrammes of double sulphate of soda or lime; the whole is
then stirred for about half an hour whilst being kept warm.
There is thus formed a white, shining, slimy mass, which may be used like
starch, as a starching, painting, or dressing medium; and materials impregnated or
painted with it are rendered uninflammable.
The proportions of the ingredients vary as above specified according to the
degree of the chloride and the consistence it is desired to give to the resulting
mass.
A simpler composition is obtained by pouring potatoe starch into the clear
solution of chloride of calcium (or of other chloride) which is taken at about
30° Beaumé strength and heated up to 60° Reaumer. After well stirring and
warming for about an hour soluble glass to the extent of 1 to 2% of the weight of
the whole mass is added, and neutralized by the addition of any suitable acid or
super salt.
Having now described the nature of the said Invention and the manner in
which the same is to or may be carried into effect I would have it understood that
what I claim as the invention to be secured by the within in part recited letters
patent is.
The composition of an uninflammable starching, dressing or painting material
from chlorides, soluble glass, sulphate of soda, sulphate of ammonia, soap stone
powder, and potatoe starch, or from chloride of calcium and soluble glass with
starch as hereinbefore described.
In witness whereof I the said Lorentz Albert Groth have hereunto set my
hand and seal this twenty sixth day of October In the year of our Lord
One thousand eight hundred and eighty two.
LORENTZ ALBERT GROTH (L.S.)