Improved Device for Extinguishing the Fire on Lack of Water in the Boiler.
Year: 1898

page_text: Date of Application, 14th May, 1898
Complete Specification Left. 11th Feb., 1899-Accepted, 11th Mar., 1899
Date of Application, 14th May, 1898
Complete Specification Left. 11th Feb., 1899-Accepted, 11th Mar., 1899
PROVISIONAL SPECIFICATION.
Improved Device for Extinguishing the Fire on Lack of Water in the
Boiler.
We, HUGO RICHTER, a subject of the Emperor of Austria, Master of Works,
and DR. LEO RITTER VON HERZ, a subject of the Emperor of Austria, Division
Superintendent, both of No. 37, Mariahilferstrasse, Vienna, in the Empire of
Austria, do hereby declare the nature of this invention to be as follows:-
This invention relates to a device which may be provided on any boiler and
whose object is to extinguish the fire in the fire chamber when the water has
sunk below the lowest level as prescribed by law.
This device chiefly consists of a valve casing provided above the boiler, from
which casing a pipe leads into the water chamber of the boiler and ends below
the lowest water level, whereas a second pipe extends from the valve casing into
the fire chamber.
As soon as the water sinks to the outlet of the first pipe, steam enters the
latter and causes a melting ring, arranged between the valve cone and valve
seat and consisting of any suitable substance with corresponding low melting
point, to melt whereupon the steam then passes through the second pipe and
the intermediate space formed between the valve seat and valve cone into the
fire chamber and extinguishes the fire therein. The apparatus can also be pro-
vided with an alarm device (whistle or bell) so as to at same time also serve
as feed alarm.
On the valve casing or also on a hollow spindle of the valve cone is arranged
a ventilating cock by means of which the air, collected in the first pipe and the
valve casing, can be let out when starting to heat the boiler.
In view of the known safety lead plugs which are screwed into the fire-box
top or crown of locomotive boilers the above described apparatus has great advan-
tages viz:
1. The opening which is formed through the melting of the melting ring may
immediately be closed again in a perfectly safe manner by simply screwing down
the valve cone onto the valve seat, whereas with the safety plugs, it is only
possible to close the opening when the boiler is cold, so that if the melting were
to take place on the track, the only alternative would be to stop there.
2. According to the device sought to be protected, the melting ring is entirely
beyond reach of the action of the fire and can therefore only be melted by the
steam on lack of water but not without lack of water by a gradual burning out
as is the case with all constructions hitherto in use on whose melting plugs the
fire might act.
1
1
1000
MARKS & CLERK.
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents.

page_text: We, HUGO RICHTER, a subject of the Emperor of Austria, Master of Works,
and DR. LEO RITTER VON HERZ, a subject of the Emperor of Austria, Division
Superintendent, both of No. 37, Mariahilferstrasse, Vienna, in the Empire of
Austria, do hereby declare the nature of our said invention and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement; -
This invention relates to a device which may be provided on any boiler and
whose object is to extinguish the fire in the fire chamber when the water has sunk
below the lowest level as prescribed by law.
In the accompanying drawing, such a device is shown in detail;
Fig. 1 is a longitudinal section,
Fig. 2 a sectional end elevation of the device;
Fig. 3 is a sectional view showing the arrangement of the device on a loco-
motive boiler.
This device substantially consists of a valve casing 1 provided above the
boiler, from which casing a pipe 2 leads into the water chamber of the boiler and
ends below the lowest water level, whereas a second pipe 3 extends from the
valve casing into the fire chamber.
As soon as the water sinks to the outlet of the pipe 2 steam enters the latter
and causes a melting ring 6 arranged between the valve cone 4 and valve seat 5
and consisting of any suitable substance with corresponding low melting point,
to melt, whereupon the steam then passes through the pipe 3 and the inter-
mediate space formed between the valve seat and valve cone into the fire chamber
and extinguishes the fire therein. The apparatus can also be provided with an
alarm device (whistle or bell) so as to at same time also serve as feed alarm.
On the valve casing or also on the hollow spindle 7 of the valve cone 4 is
arranged a ventilating cock 8 by means of which the air, collected in the pipe 2
and the valve casing, can be let out when starting to heat the boiler.
In view of the known safety lead plugs which are screwed into the fire-box
top or crown of locomotive boilers the above described apparatus has great
advantages viz.:
1. The opening which is formed through the melting ring may immediately be
closed again in a perfectly safe manner by simply screwing down the valve
cone onto the valve seat, whereas with the safety plugs, it is only possible to
close the opening when the boiler is cold, so that if the melting were to take
place on the track, the only alternative would be to stop there.
2. According to the device sought to be protected, the melting ring is entirely
beyond reach of the action of the fire and can therefore only be melted by the
steam on lack of water but not without lack of water by a gradual burning out
as is the case with all constructions hitherto in use on whose melting plugs the
fire might act.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that
what we claim is;-
Improved device for extinguishing the fire on lack of water in the boiler con-
sisting in providing in a conduit of pipes 2, 3, leading from the lowest water
level into the fire chamber, a stop valve with melting ring 6, located between the

page_text: valve cone 4 and valve seat 5, so that on the melting of the ring, the opening
formed may be immediately closed again, substantially as described and shown
in the drawing.
Dated this 11th day of February 1899
MARKS & CLERK.
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham.
and 25, Cross Street, Manchester, Agents.