Improved Fire Extinguisher.
Year: 1899

page_text: Date of Application, 31st Aug., 1899-Accepted, 28th Oct., 1899
Improved Fire Extinguisher.
We, CHARLES JOSEPH PATTON, of 90, Lyon Street, Manufacturer of Fire Extin-
guishers, and JOHN CLYDE GRANT, of 150, Waller Street, Barrister and Solicitor,
both of the City of Ottawa, in the Dominion of Canada, 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-
The object of this invention is to make a fire extinguisher which will always
he effective, by independently securing the active agents or chemicals each in
separate chambers until amalgamated for use, to prevent the chemicals loosing
strength and power although stored for a long time, and to keep the receptacles
composing the extinguisher, from injury by rust or corrosion.
The invention consists in sealing three different chemicals in non-corroding
or glass chambers separated from one another, and sealing the same hermetrically
BO that moisture arising from a chemical fluid will not attack and corrode the
casing or the tubes leading to the outlet, and the invention also relates to the
form of the outlet.
In the accompanying drawing forming a part of this specification, like numerals
indicate like parts in all the figures, and in which drawing:
Figure 1 is a vertical section of the improved fire extinguisher, Fig. 2 a view
to show the outlet tubes, and Fig 3 is a view of the glass lining and bulb
chamber or receptacle
Referring to the drawing, 10 is a sheet metal shell or casing cylindrical in
form and strong enough to resist an internal pressure of say sixty pounds to the
square inch, and said shell is closed at the bottom, and the top has a cap 12,
which screws on and seals the inlet to said shell Through said cap slides a
plunger rod or breaker bar 13, which, preferably, 18 made of two parts connected
by a hinge 33, thereby permitting the protubing end to be bent out of the way
to prevent possibility of the bulbs hereinafter referred to, being broken through
accident, or before required
Cap 12, is provided with a stuffing box or guide tube 34, to exclude passage
of air and to support and prevent said rod 13 from bending while being forced
internally to break the bulbs Cap 12, covers an eccentrically located opening
in the top of the shell 10, and a tap or cock 14, is secured in the wall of the
shell, near the top or lower end when the extinguisher is inverted for use, and
said tap is connected inside the shell to a Y-shaped tube 15, preferably of lead,
the two branches 16 being prolonged to pass on opposite sides of a chamber 22,
and the ends of said branches are covered with wire gauze 17, and preferably,
gradually taper toward the outlet, thereby allowing the fluid to be ejected with-
out breaking the stream.
20, 18 a glass lining and it snugly fits the interior of the shell and terminates
in an eccentrically located neck 21, under the opening in the shell covered by
the cap 12. In said neck is inserted a glass cylindrical chamber 22, which
depends into the lining 20, an exterior flange 23 holding it in the neck, in which
the chamber is hermetrically sealed or cemented, and said chamber is a receptacle
רנס...D

page_text: for the glass bulbs 30 and 31, and it has internal projections or flange 24, to
prevent the bulbs falling out through the bottom
Bulbs 30 and 31, contain the gas-producing chemicals when mixed with a
chemical fluid in the lining or vessel 20 The lower bulb 30, is pear-shaped and
fits into the opening in the bottom of chamber 22, and is sustained by the flange
or rim or projections 24 The bulb 31. seats on the top of bulb 30, and is a
prolate spheroid or flattened sphere in shape to present a flattened face to the
inthrust of the plunger rod 13, which thrust also breaks the bulb 31, whereby
the contents of both bulbs will commingle with the fluid in the lining 20, and
generate the gas necessary to force the fluid out of the extinguisher, when the
extinguisher is inverted, as in use
Both bulbs when charged are hermetrically sealed by fusing the glass to close
the opening. When both bulbs are in position as shown, cement 32, is poured or
placed around the upper bulb, to firmly secure both bulbs in the chamber 22,
and also hermetrically seal the larger chamber formed by the lining 20
As the chemicals are in separate glass vessels, receptacles or chambers, each
hermetrically sealed, the contents will not be impaired if kept for years unused,
hence the extinguisher will always be ready for use
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:-
cap
1. A chemical fire extinguisher, comprising a sheet metal cylindrical shell
provided with an outlet tap and having a screw top or cap, a plunger rod or
breaker bar made preferably in two parts and hinged together outside said
and sliding therethrough, a glass lining having an eccentrically located neck
reached by the plunger rod, a cylindrical chamber cemented in said neck and
open at the top and bottom, two heimetrically sealed bulbs in said chamber, and
containing gas-producing materials, said chamber closed by cementation, sub-
stantially as set forth and for the purpose described
2. In a chemical fire extinguisher, a bulb of a flattened spheroidal shape, and
another pear-shaped both containing gas-producing substances, in combination
with a glass vessel containing a fluid and hermetrically sealed, and a metallic
shell inclosing said vessel, as described
3. In a chemical fire extinguisher, the combination with a sheet metal shell
having a tap and breaker rod as described, of a glass receptacle containing the
extinguishing fluid, hermetrically sealed bulbs containing gas-producing chemical
materials secured in a chamber inserted in the neck of said receptacle, said
bulbs and chamber cemented to hermetrically close the neck of said receptacle,
substantially as and for the purpose set forth
4 In a chemical fire extinguisher having a glass lining terminating in a neck
eccentrically located, a chamber containing two glass bulbs filled with gas-pro-
ducing materials cemented therein and a Y-shaped tube connected to a tap through
an outside shell or casing of sheet metal, the bianches of said tube tapering and
the ends terminating in a wire gauze covering, as set forth
5 A chemical fire extinguisher having an interior Y-shaped tube discharging
through a tap in a shell and having the branches extending partly around a glass
lining in said shell, the ends of said branches provided with a wire gauze cover-
ing, bulbs in the neck of said lining and hermetrically sealed, and a plunger rod
to break said bulbs, substantially as set forth
Dated this 28th day of August 1899.
PHILIP M. JUSTICE,
Chartered Patent Agent, London, For the Applicants.