Improvements in Fire Extinguishing Apparatus.
Year: 1896

page_text: Date of Application, 3rd Mar., 1896
Complete Specification Left, 2nd Dec., 1896-Accepted, 2nd Jan., 1897
PROVISIONAL SPECIFICATION.
Improvements in Fire Extinguishing Apparatus.
1, WILLIAM MILLER, of 212 St. Vincent Street, in the County of Glasgow,
North Britain, Merchant, do hereby declare the nature of this invention to be as
follows, that is to say :-
My said invention has for its object to provide fire extinguishing apparatus of
the kind operating with carbonic acid set free by sulphuric or other suitable acid,
with certain automatic valves, which render it unnecessary to fit the discharge
pipes with stopcocks or valves requiring to be opened by hand when the apparatus
is to be used. With such apparatus as ordinarily made there is apt to be some
objectionable discharge or dripping of the liquid, due to changes of temperature,
when there is no stopcock; and when there is a stopcock it is liable to be
insufficiently opened or not at all in the hurry of using the apparatus.
In carrying out my invention according to one modification I fit a small air valve
in the top of the screw cap employed to close the filling nozzle at the top of the
apparatus; or this valve may be at any other convenient upper part of the
apparatus. The valve piece is a small ball which ordinarily lies at the lower
part of a recess, but when pressure due to carbonic acid occurs it closes the ball
up against a small bole in a rubber disk which lines the perforated top of the
valve box.
According to another modification I arrange a small check valve at any
convenient part of the discharge pipe, making the valve piece just heavy enough
to withstand the pressure or column of water and close down upon a valve
seat; but which is forced open by the extra pressure on carbonic acid being
set. free.
Dated this Second day of March 1896.
EDMUND HUNT,
Applicant's Agent.
I, WILLIAM MILLER, of 212, St. Vincent Street, in the County of Glasgow,
North Britain, Merchant, 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, that is to say :-
My said invention has for its object to provide fire extinguishing apparatus of
the kind operating with carbonic acid set free by sulphuric or other suitable acid,
with certain automatic valves which render it unnecessary to fit the discharge pipes
with stopcocks or valves requiring to be opened by hand when the apparatus is
to be used. With such apparatus as ordinarily made there is apt to be some
objectionable discharge or dripping of the liquid, due to changes of temperature,
when there is no stopcock; and when there is a stopcock it is liable to be
insufficiently opened or not at all in the hurry of using the apparatus.
And in order that my said invention and the manner of performing the same
may be properly understood, I hereunto append a sheet of explanatory drawings,
Price 8d.1

page_text: to be hereinafter referred to, and showing several modifications of fire-extinguishing
apparatus as made according to my invention.
Figure, 1, of the drawings is a plan, and Figure, 2, is a partially sectioned
elevation of one modification.
Figures, 3, and 4, aro sectional elevations of part of second and third
modifications.
Figure, 5, is a sectional elevation of a fourth modification.
In these drawings the same reference, lettera are used to mark the same or liko
parts wherever they are repeated.
In carrying out my invention according to the modification shown in Figures, 1,
and 2, I fit a small air valve, A, in the screw cap, B, employed to close the filling
nozzle at the top of the apparatus; or this valve may be at any other convenient
upper part of the apparatus. The valve piece, A, is a small ball, and it is enclosed
in a recess, C, in n plug-like piece, D, screwed into the cap, B, and having a
passage, E, communicating with the recess and with a diametrical passage, G,
opening to the atmosphere. The valve, A, ordinarily lies on cross wire, H,
inserted in the lower part of the recess, C, which is otherwise open to the inside
of the apparatus, but when pressure due to the carbonic acid being set free
occurs it closes the ball, A, up against a small hole in a rubber disk, J, which
is at the junction of the recess, C, and the passage, E. Vapor in the apparatus,
however, due merely to changes of temperature, passes off past the ball valve, A.
In the second modification shown in Figure, 3, the valve box, D, is fixed to a
lateral projection, K, of the piece, L, to which the discharge pipe is attached, the
valve, A, being previously inserted into the valve box. The recess, C, containing
the valve, A, communicates with the inside of the apparatus by an opening, N, near
which the valve ordinarily sits, the valve closing during the working action of the
apparatus against a hole in a rubber disk, J, ou the projection, K, in which there
is a central passage, E, communicating through the hole in the disk with the
recess, C, and with the discharge piece, L.
In the modification shown in Figure, 4, the valve box, D, is in a piece with the
discharge piece, L, and is provided with a cap, P, to permit of the insertion of
the valve, A. The passage, E, in this case communicating with the recess, C, and
discharge piece, L, is horizontal and the valve, A, closes, during the action of the
apparatus, against the rubber disk, J, at the passage and between it and the side
of the valve box, D.
According to another modification shown in Figure, 5, I arrange a cylindrical
valve piece, A, formed with conical ends at the upper (or another convenient) part
of the discharge pipe, L. The valve, A, is made heavy enough to withstand the
pressure or column of water and close down upon a valve sent, Q; but it can bo
forced open by the extra pressure due to carbonic acid being set free.
Having now particularly described and ascertained the nature of my said inven
tion and in what mannor the same is to bo porformed, 1 declare that what I
claim is :-
1. In fire-extinguishing apparatus, of the kind to which the invention relates
providing an automatic valve, closing by the working pressure of the apparatus
due to the chemical action, but opening by slight pressure due merely to changes
of temperature substantially as aud for the purposes hereinbefore described.
2. In fire-extinguishing apparatus of the kind to which the invention relates the
application of a suitably heavy valve ordinarily closing down on a lower valve
scat in the discharge passage but opening when acted on by pressure due to
carbonic acid being set free substantially as hereinbefore described with reference
to Figure, 5, of the accompanying drawings.
Dated this First day of December 1896.
EDMUND HUNT,
Applicant's Agent.