Improved Fire Extinguishing and Fireproofing Compound.
Year: 1891

page_text: Date of Application, 1st Aug., 1891
Complete Specification Left, 31st May, 1892-Accepted, 27th Aug., 1892
PROVISIONAL SPECIFICATION.
Improved Fire Extinguishing and Fireproofing Compound.
J, OTTO GEORGE HUNKEL of Besingo in the Austrian Empire, Gentleman,
do hereby declare the nature of this invention, to be as follows:-
This invention relates to an improved liquid fire extinguisher compound, which
is composed as follows:-
:-
(I.) kilogram hydrochlorate of ammonia dissolved in 20 litres water, with in
some cases kilogram borax added.
(II.) 0.350 kilo. powdered calcined alum in 10 litres water.
(III.) 3.00 kilo. powdered crystallized sulphate of ammonia dissolved in 5 litres.
water.
.
(IV.) 2 kilo. powdered chlorate of soda (common salt) in 40 litres water."
(V.) 0-350 kilo. powdered bicarbonate of soda in 5 litres water.
(VI.) 4.500 soda water glass (fluid).
The above substances are dissolved separately in the quantities of water
mentioned, when they are mixed by pouring them one by one in the order named,
into a sufficiently large vessel, the water glass going in last, being added slowly
and while stirring. When the compound has the appearance of a milky, yellowish
white fluid, another 20 litres water may be added, and the fire extinguisher
compound according to my invention is now ready. It is used by sprinkling on the
fire in any convenient manner and can be kept for any length of time. It is
also applicable to soak objects in for the purpose of preventing them taking fire.
Dated the 31st day of July 1891.
BONNE & Co.,
Registered Patent Agents, 57 & 58, Chancery Lane, London,
Agents for Applicant.
COMPLETE SPECIFICATION.
Improved Fire Extinguishing and Fireproofing Compound.
I, OTTO GEORGE HUNKEL, of Besingo, in the Austrian Empire, Gentleman, 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:-
My invention relates to chemical compounds for extinguishing fires, and has for
its object the production of a compound of this kind, which is intended to be
quicker and more reliable in its extinguishing effect upon a burning object than the
compounds for the same purpose heretofore known, being at the same time.
considerably cheaper in price than the fire extinguishing compounds now in use.
'מ

page_text: In the following I give the ingredients of my improved compound, indicating at
the same time, by weight, the proportionate quantity of cach ingredient for preparing
100 liters equivalent to about 22 gallons of fire extinguishing liquid.
1.
II.
0.770
"
2:204 lb. Muriate of ammonia (ammon: muriat. depur.) 4.400 gall, water.
Burnt alum (alumen. ustum)
III.
0.440
"
IV.
4.408
"
Cryst. sulphate of ammonia (amon. sulf. cryst.)
Sodium chloride, (natriumchloratum)
2.200
1.100
دو
"
"
"
8.800
"
"
V.
0:770
Bicarbonate of soda, (natron bicarbon)
1.100
"
"
"
VI.
9.920
"
Soda water-glass, in liquid state
The desired total quantity of 22 gallons is made up by the addition of the
necessary quantity of water (about 4 gallons).
All the before mentioned chemicals, with the exception of the water-glass should
be dissolved separately in the quantity of water indicated for the same; the water
employed should by preference be rain- or river-water.
When the ingredients-I. to V.-are thus thoroughly dissolved, the solutions
are poured into a common vessel-by preference in the order as numbered-while
being continuously stirred. This stirring is best done with a new birch or similar
broom.
Now the 9.920 lbs. of soda water glass are slowly added, the stirring being
continued, and finally is added the quantity of water about 4 gallons to make up
the desired total quantity of 100 liters or about 22 gallons of extinguishing liquid,
which, after a final stirring, is now ready for use.
This liquid may be kept in readiness in any suitable vessel or vessels, and will
retain its extinguishing qualities, unimpaired, for years.
In preparing a stock of this extinguishing liquid, the ingredients I III and V
are by preference dissolved in warm water, and II and IV in hot water; the mixing
of the different solutions, and the adding of the water-glass must then take place
after the solutions have cooled again.
When it is necessary or desirable however to prepare the mixture quickly and
for immediate use, cold water may be employed for all solutions.
Although the proportions of the different ingredients and solutions of my fire-
extinguishing compound or liquid are those I have ascertained by numerous trials
and experiments as giving the best possible results, I do not wish to confine myseli
to these exact proportions and quantities indicated; but reserve myself the right to
modify any or all of the same within reasonable limits.
it
The fire-extinguishing compound described is used to best advantage by throwing
upon the burning or endangered object or objects in form of a dense spray o.
sprinkle. When coming into contact with the burning or a heated surface an
immediate crystallization of the compound takes place, accompanied by a rapid
vaporisation of the water, the consequence being an immediate smothering and
extinguishing of the flames, no matter how highly inflammable the burning object
"may be.
Linen and other fabrics may be rendered uninflammable by being steeped in the
aforesaid mixture, and afterwards dried.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :
A chemical fire-extinguishing and fireproofing compound or liquid composed of
the ingredients, and essentially in the proportions and manner herein set forth.
Dated 21st Mov 1892
GEO.
DOWNING,
8, Quality Court, London, W.C., Agent.