Improved Device for Automatically Mixing Fire Extinguishing Substances with Water.
Year: 1893

page_text: Date of Application, 19th Sept., 1893
Complete Specification Left, 16th May. 1894-Accepted, 16th June, 1894
Improved Device for Automatically Mixing Fire Extinguishing
Substances with Water.
A communication by GEORG MÜLLER, of The "Rehleseiler," in Kaufbeuren,
Swabia, in the Empire of Germany.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of The Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool and 6, Bank Street,
Manchester both in the County of Lancaster and 323 High Holborn in the
County of Middlesex, Civil Engineer, do hereby declare the nature of this
invention to be as follows:-
This apparatus which can be easily moved about is inserted in the pressure pipe
by connecting or coupling up tubes and which works automatically without any
assistance, affords a thoroughly reliable means for mixing suitable fire extinguishing
or suppressing chemicals with the water flowing through the pipe. It consists of
a vessel provided with a tight fitting removable lid or cover, which vessel is
composed of an outer case which is tapered conically at the end, and of an inner
cylinder which may be taken out or replaced and which is finely perforated from
the tapered point downwards. This cylinder rests below on a suitable ring
connected with the whole vessel and is provided near its lower end with a bottom
perforated with larger holes than are the sides of the cylinder.
The annular mouth of the tubular piece beneath the cylinder may be opened and
closed by means of a valve.
The water is supplied at one side of the device and discharged at the other.
From the supply pipe a tube with a separate cock branches off, this branch tube
opens above into the empty space situated between the outer case and the
inner cylinder.
This vessel arranged as hereinbefore described and having its cylinder filled
with fire extinguishing substances, stands on feet and may be easily placed
anywhere. In case of requirement, the apparatus is quickly inserted in the pipe
by coupling it at the inlets and outlets and comes equally quickly into operation
for which only a few adjustments by hand are necessary. For this object the cock
in the aforesaid branch tube and valve are opened and the flow through is suitably
adjusted, whereupon an automatic continuous supplying of the chemicals takes
place uninterruptedly. This is caused by the penetration of the water under pressure
which circulates into the fire extinguishing substances, and by the escape of the
charged water through the valve. The small quantity of water which passes in a
direct course immediately through the tubular part assists the discharge and mixes
further on equally with the chemicals. The apparatus herein before described may
be modified in such a way that it may be used as a simple hand fire extinguisher
for household use and may be used by anyone immediately after having been
connected with the water supply of the house. For this purpose, the apparatus
is connected with a steel tube.
The essential part of the previously described apparatus, namely, the com-
bination of two cylinders, an outer case and an inner perforated one is retained in
this; the only modification being that both cylinders change their functions, the
outer one serving to contain the fire extinguishing substances, instead of the inner
one as in the apparatus previously described, and the inner one for receiving or
giving passage to the water. The branch tube is consequently entirely dispensed

page_text: with as the supply of water to the inner tube can take place directly. The valve
of the apparatus is also omitted.
The apparatus consists of an outer case preferably made of copper, which case
is closed at both ends by caps which may be screwed on or off and which allow of
the apparatus being filled and cleaned. In the centre of each of the two caps tubes
are inserted. One of these tubes is connected with an indiarubber hose attached
to the pressure main, whilst the other tube on the other hand is connected with a
nozzle so that it may be used as a hose pipe.
The case is after removal of the cap filled with dry fire extinguishing substances
and again closed, and the apparatus is then ready for use at any time; the water
under pressure entering by means of the hose pipe flows partly through the tube
direct to the mouthpiece and partly passes through slits in the tubes into the fire
extinguishing substances..
These latter are dissolved in the water and the solution passes through the slit
in one of the tubes, is here mixed with the water which is flowing direct through
the centre tube and is driven out of the nozzle or mouthpiece. A fire in a room
may be at once extinguished by means of a single charging or filling of the
apparatus (about 700 grammes).
The mixing apparatus has the form of an expanded or wide hose pipe and may
be attached to any suitable house or room water supply pipe by means of a piece of
tubing. It then works at once automatically by dissolving the fire extinguishing
substances which have been kept in a dry condition in the apparatus and directing
it on the burning article.
Dated this 18th day of September 1893.
WM. P. THOMPSON & Co.,
Agents for the Applicant.
COME LEIE SPECIFICATION.
Improved Device for Automatically Mixing Fire Extinguishing
Substances with Water.
A communication by GEORG MÜLLER, of The "Rehleseiler," in Kaufbeuren,
Swabia, in the Empire of Germany.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of The Agency for
Foreign Patent Solicitors, 6 Lord Street, Liverpool, and 6 Bank Street,
Manchester both in the County of Lancaster, and 323 High Holborn in the
County of Middlesex, Civil Engineer, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
This apparatus, which can be easily moved about and is connected with the
pressure pipe by connecting or coupling up tubes and which works automatically
without any assistance, affords a thoroughly reliable means for mixing suitable fire
extinguishing or suppressing chemicals with the water flowing through the pipe.
It is shown on the accompanying drawings:
Figure 1 being a sectional elevation, and
Figure 2, a sectional plan view of one form of the apparatus; and
Figure 3, a sectional elevation of a larger kind of apparatus.
The larger apparatus shown in Figure 3 consists of a vessel provided with a
tight fitting removable lid or cover, which vessel is composed of an outer case c
which is tapered conically at the end c', and of an inner cylinder d which may be
taken out or replaced, and which is finely perforated from the tapered point c'
downwards. This cylinder d rests below on a suitable ring e connected with the
whole vessel, and is provided near its lower end with a bottom ƒ perforated with
larger holes than are the sides of the cylinder.

page_text: The annular mouth of the tubular piece e beneath the cylinder may be opened
and closed by means of a valve g.
The water is supplied at one side, a, of the device, and discharged at the other, b.
From the supply pipe, a tube i, with a separate cock k, branches off, this branch
tube opens above into the empty space situated between the outer case c and the
inner cylinder d.
This vessel, arranged as hereinhefore described and having its cylinder filled
with fire extinguishing substances, stands on feet and may be easily placed
anywhere. In case of requirement, the apparatus is quickly inserted in the pipe
by coupling it at the inlets a and outlets b, and comes equally quickly into
operation, for which only a few adjustments by hand are necessary. For this
object, the cock & in the aforesaid branch tube i and valve g are opened and the
flow through the parts ide is suitably adjusted, whereupon an automatic
continuous supplying of the chemicals takes place uninterruptedly. This is caused
by the penetration of the water under pressure which circulates in the space
between the case c and cylinder d, into the fire extinguishing substances, and by
the escape of the charged water through the valve g. The small quantity of water
which passes in a direct course immediately through the tubular part o assists the
discharge and mixes further on equally with the chemicals.
The apparatus herein before described may be modified as shown in Figures 1
and 2 in such a way that it may be used as a simple hand fire extinguisher for
household use and may be used by anyone immediately after having been connected
with the water supply of the house. For this purpose, the apparatus is connected
with the latter by means of a suitable piece of tubing.
The essential part of the previously described apparatus shown in Figure 3
consisting of the combination of two cylinders, an outer case and an inner
perforated one, is retained in the apparatus shown in Figures 1 and 2, the only
modification being that both cylinders change their functions, the outer cylinder
serving to contain the fire extinguishing substances, instead of the inner one, as in
the apparatus shown in Figure 3, and the inner one for receiving or giving passage
to the water. The branch tube is consequently entirely dispensed with, as the
supply of water to the inner tube takes place directly. The valve g is also
omitted.
The apparatus shown in Figures 1 and 2 consists of an outer case a, preferably
made of copper, which case is closed at both ends by caps c c' which may be
screwed on or off and which allow of the apparatus being filled and cleaned. In
the centre of each of the two caps tubes and are inserted. One of these
tubes his connected with an indiarubber hose attached to the pressure main,
whilst the other tube on the other hand is connected with a nozzle e so that it
may be used as a hose pipe.
The case a is after removal of the cap filled with any suitable dry fire
extinguishing substances and again closed, and the apparatus is then ready for use
at any time; the water under pressure entering by means of the tubing f flows
partly through the tube d direct to the mouthpiece e and partly passes through
slits in the tube or the holes g in the tube d into the fire extinguishing
substances.
These latter are dissolved in the water and the solution passes through the slit h³
in the tube and is here mixed with the water which is flowing direct through the
centre tube d and is driven out of the nozzle or mouthpiece e. A fire in a room
may be at once extinguished by means of a single charging or filling of the
apparatus (about 700 grammes).
The mixing apparatus has the form of an expanded or wide hose pipe and may
he attached to any suitable house or room water supply pipe by means of a piece
of tubing. It then works at once automatically by dissolving the fire extinguishing
substances which have been kept in a dry condition in the apparatus and directing
it on the burning article.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is-
1. A device for automatically mixing fire extinguishing substances with water,
cousisting of the combination of two cylinders, the outer one being filled with the
fire extinguishing substances or chemicals and the inner one in the form of a
perforated tube through which the water passes, said perforated tube being
connected by means of an indiarubber tubing or the like to any suitable water
supply substantially as herein before described and shown on the accompanying
drawing.
2. In the device for automatically mixing fire extinguishing substances with
water described in Claim 1, the arrangement of the same in the form of a hose
pipe and nozzle to allow of its being used as a fire extinguisher, substantially as
hereinbefore described and shown on the accompanying drawing.
3. A modification of the device for automatically mixing fire extinguishing
substances with water, consisting in placing the chemicals in the inner perforated
cylinder (d), whilst the water is admitted between this cylinder and the outer
case (c) by means of a branch pipe (i) connected with the water supply,
substantially as herein before described and shown in Figure 3 of the accompanying
drawings.
Dated this 15th day of May 1894.
WM. P. THOMPSON & Co.,
Agents for the Applicant.