Improvements connected with Appliances for Containing and Preserving Carbonic Acid Gas, or other Gases, or Compressed Air, Ready for Use in Fire Extinguishers.
Year: 1894

page_text: Date of Application, 23rd Jan., 1894
Complete Specification Left, 22nd Oct., 1894-Accepted, 24th Nov., 1894
PROVISIONAL SPECIFICATION.
Improvements connected with Appliances for Containing and
Preserving Carbonic Acid Gas, or other Gases, or Compressed
Air, Ready for Use in Fire Extinguishers.
We, JAMES OSBORN SPONG, of 226 High Holborn, Domestic Appliances
Manufacturer, and GEORGE WILLIAM DUNMO, of 40 Hollingsworth Street,
Holloway, (both in the County of London), Coppersmith, do hereby declare the
nature of this invention to be as follows:-
For the purpose of this invention, we make a cylinder preferably of copper to
withstand great internal strain. The cylinder is closed at one end, and the other
forms a socket or seating for a screw plug which is passed through from the outside,
the plug closing a hole to the interior of the cylinder and to one at right angles
thereto.
The right angled hole is screw threaded for the reception of a nozzle of a pump,
or from a charged vessel by which the carbonic acid gas, or other gases, or
compressed air, can be forced into the cylinder, a gauge on the branch indicating
the pressure.
When the required pressure is in the cylinder, the plug is screwed
down upon its seating to enclose the contents.
The plug may be arranged at the bottom of the cylinder, and operable from the
outer end.
The cylinder, when the pump nozzle is removed, can be fitted in any suitable
manner such as by hinged lugs, clamp joint, or otherwise into the cap of a vessel
which is to be supplied with liquid, the two vessels constituting what is known as
an extincteur.
When the article has to be used, the carbonic gas plug is loosened for the gas to
flow through the side opening and commingle with the air or liquid in the outer
suitable
any
vessel, and the mixture under the internal pressure can be directed to
spot on a tap being opened, the carbonic gas or air although smaller in volume
when expanded will force the liquid out to extinguish fire in its incipiency.
Dated this 22rd dox of January 1894.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said James Osborn Spong and George William Dunmo.
COMPLETE SPECIFICATION.
Improvements connected with Appliances for Containing and
Preserving Carbonic Acid Gas, or other Gases, or Compressed
Air, Ready for Use in Fire Extinguishers.
We, JAMES OSBORN SPONG, of 226 High Holborn, Domestic Appliances
Manufacturer, and GEORGE WILLIAM DUNMO, of 40 Hollingsworth Street,
Holloway, (both in the County of London), Coppersmith, 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 :—
For the purpose of this invention, we make a cylinder preferably of copper to
withstand great internal strain.
The cylinder is closed at one end, and the other forms a socket or seating for a

page_text: screw plug or a valve which is passed through from the outside, the plug closing a
hole to the interior of the cylinder and to one at right angles thereto.
The right angled hole is screw threaded for the reception of a nozzle of a pump,
or from a charged vessel by which the carbonic acid gas, or other gases, or
compressed air can be forced into the cylinder, a gauge being employed for
indicating the pressure.
When the required pressure is in the cylinder, the plug is screwed down upon its
seating to enclose the contents. The plug may be arranged at the bottom of the
cylinder and operable from the outer end.
The cylinder when the pump nozzle is removed can be fitted in any suitable
manner, such as by hinged lugs, clamp joint, or otherwise into the cap of a vessel
which is to be supplied with liquid, the two vessels constituting what is known as
an extincteur.
When the article has to be used, the carbonic gas plug is loosened for the gas to
flow through the side opening and commingle with the air or liquid in the outer
vessel, and the mixture under the internal pressure can be directed to any suitable
spot on a tap being opened, the carbonic gas or air although smaller in volume
when expanded will force the liquid out to extinguish fire in its incipiency.
Our invention will be clearly understood by reference to the annexed drawings.
Figure 1 is a part sectional elevation of the foregoing apparatus.
Figure 2 an outside elevation, and Figure 3 a perspective elevation looking on
the upper part of same with inner cylinder lifted partially out.
A is the internal cylinder with a head B and neck C in the hollow of which is
the seating D for the plug or valve E (screw or other) to be forced for enclosing
carbonic acid gas, or it may be some other gas, or air under great compression
which the cylinder A is specially made to withstand. F is a side hole in the neck
of this cylinder to lead the gas or air to an annular space formed between the neck
and a screen G which is secured in the neck rim H of an outer cylindrical vessel
or drum J, said screen also serving as a guide to centralize the cylinder A and to
locate said cylinder therein.
K, K, are two forked lugs on the head B of the cylinder A for the reception of
hinged bolts L, L, on the screen G of the vessel J for securing the cylinder A
down in close contact and air and liquid tight upon screen G in which a rubber,
vulcanite, or other seating is formed the cylinder A being held firmly by the fly or
thumb nuts M, M, as indicated.
The plug or valve is made air tight by the packing gland N screwed on the head
of the cylinder A, and to facilitate the easy turning of the plug we provide a hand
wheel or spanner P with a central shaped opening to fit over the plug stem, and
said wheel P has two other openings for engagement by the wings of the fly nuts
to enable them to be readily turned.
Q, Q, are rings to enable the cylinder A to be lifted out, or replaced in the
vessel. R is the direction or delivery hose, and S the nozzle thereon.
T is a gauge to indicate the pressure on the liquid in J when the gas valve is
opened, and U, U, are handles by which the apparatus can be hand carried, or if
provided with a yoke and shoulder straps it can be carried on a man's back giving
freedom for his hands to manipulate the hose tap V and the delivery from the hose
branch. The aperture F also facilitates the charging of the cylinder A by
screwing a hose to it from a force pump, or charged cylinder.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. The apparatus connected with fire extinguishing, as hereinbefore set forth and
shown in the drawings.
2. The attachment appliances A, B, D, E, G, K, L, M, as described and shown
for a fire extinguishing apparatus, as set forth.
3. The inside gas or air container with head plug aperture F arranged and

page_text: acting in and for the purposes described and forming part of a fire subdueing
apparatus, as represented in the drawings.
The 22nd day of October 1894.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said James Osborn Spong and George William Dunmo