Improvements in Hand-apparatus for Extinguishing Fire.
Year: 1889

page_text: Date of Application, 18th Nov., 1889
Complete Specification Left, 16th Aug., 1890-Accepted, 15th Nov., 1890
PROVISIONAL SPECIFICATION.
Improvements in Hand-apparatus for Extinguishing Fire.
I, ALFRED WILLIAM PEMBERTON, of Blackfriars Street, Salford, in the County of
Lancaster, Cotton Spinner, do hereby declare the nature of this invention to be as
follows:-
This invention relates chiefly to that class of hand fire extinguishing apparatus in
which a chemical liquid is used, but without any pressure resulting from gases mixed
with or held in solution therein.
Hitherto such apparatus have been made of small size from which the liquid has
been discharged merely by throwing or sprinkling by hand; this invention is
designed primarily with the object of providing a large supply of the liquid
hermetically sealed and ready for use to be applied or discharged by means of a
pump.
It consists essentially of apparatus to contain the liquid with a tube to receive a
pump hermetically sealed at the lower end so as to be readily unsealed on insertion
of the pump barrel.
In carrying out the invention the vessel or container for the liquid is constructed
preferably cylindrical and of any convenient size. A tube is inserted from top to
bottom to receive a pump; this tube communicates with the interior of the container
at the bottom and is open at the top.
At the botton, where it communicates with the interior, is provided a small
chamber from which the communication to the interior is through a number of holes
or perforations. This chamber also opens to the exterior of the apparatus. The
opening between the chamber ard the pump tube is sealed or closed hermetically.
The outer opening of the chamber is covered by a cap or plug which can be
removed to close or seal the other opening, such cap or plug being provided with a
water tight seating or packing. The filling aperture or vent at the top for the
admission of air may be fitted with a similar seal. The end of the pump barrel is
reduced or made of a size to fit against the seal and it is preferably fitted with a
projecting lug or finger at or near the handle which will fit the air plug. The pump
may be of any ordinary construction with ball or similar valves for raising or forcing
liquids and provided with an outlet tube near the handle.
When the apparatus is required to be brought into use the pump is inserted into
the pump tube and pressed down and thereby the seal is broken. By the same
operation the projecting lug or finger cuts through or opens the air vent and the
apparatus is in readiness for use. A spring attached to the top of the apparatus
holds the pump in position and prevents it being withdrawn by the operation of
pumping.
This apparatus will have considerable advantage over those at present in use in that
a much larger quantity of the chemical liquid can be kept in hand in readiness for
an emergency.
Dated this 15th day of November 1809.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in Hand-apparatus for Extinguishing Fire.
1, ALFRED WILLIAM PEMBERTON, of Blackfriars Street, Salford, in the County of
Lancaster, Cotton Spinner, 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 invention relates to that class of hand fire extinguishing apparatus in which
a still liquid is stored and projected onto the fire by means of a pump.
It is designed with the object of providing apparatus which will store or contain a
large supply of the extinguishing liquid ready for use and hermetically sealed the
sealing of which will be easily cut or broken and the liquid quickly discharged on
the insertion of a pump which can be inserted and withdrawn as required.
It consists essentially of a reservoir to contain the liquid with a tube fitted into the
interior thereof open at the top to receive a removable pump and connected at the
bottom with a chamber which communicates with the interior of the reservoir and
between which a seal in the form of a disc or plug preferably constructed of lead or
other soft metal or alloy is held so as to be easily cut or detached on the insertion of
the barrel of the pump into position in the tube.
The invention will be fully described with reference to the accompanying drawings
which as an example show the invention applied to a cylindrical vessel forming a
reservoir or container for the extinguishing liquid.
Fig. 1, is a front elevation with the pump in position.
Fig. 2, side elevation.
Fig. 3, sectional elevation.
Fig. 4, plan.
Fig. 5, plan with pump removed.
Fig. 6, sectional plan on line x. y..
Fig. 7, sectional elevation enlarged of the chamber E with the seal closed.
Fig. 8, sectional elevation enlarged of the air vent sealed.
The vessel or reservoir A, in which the extinguishing liquid is stored or contained,
is as shown preferably cylindrical, and of a size to hold 4 to 10 gallons, and made of
sheet metal, though it may be of any other convenient shape or size. The top and
bottom are closed by a fixed lid B, and bottom C, which cannot be opened or
removed. Through the interior of the vessel A, from top to bottom, is fitted a tube D,
which is preferably placed in the centre. This tube is open at the top, but through
its lower end communicates with the interior of the vessel A.
In the bottom C, of the vessel A, is fitted a small chamber E, to which the tube D,
is attached, and through which communication between the interior of the vessel A,
and the tube L, is established, and it also opens to the exterior of the vessel. The
connection between the chamber E and the interior of the vessel A is through a
number of holes e or other openings through which the liquor can freely flow.
The opening from the chamber E into the tube D is sealed or closed by means of a
disc or diaphragm F of lead or other soft metal or frangible material interposed
between a seating and a small hollowed screwed nut, sleeve or nipple G screwed
tightly up into the socket so as to form a perfectly hermetically sealed joint.
Instead of a frangible disc held in position by a screwed sleeve a plug that can be
easily forced out may be inserted into the socket g but I prefer the disc F made of
lead. The bottom opening of the chamber E is covered by a cap or plug H provided
with a water tight seating preferably screwed on which can be easily removed. The
chamber E serves the purpose of preventing the sealing disc or plug entering the
interior of the vessel A and is shown arranged in its most convenient position beneath
the botton C of the vessel. It may however be made more open if desired towards
the interior of the vessel A the sealing disc or plug F being inserted in the bottom
of the tube D. On the top of the vessel A is fitted an air vent I sealed with a disc i
held on a seating by the screwed sleeve ?².

page_text: A small tubular pump J of any ordinary form or construction fits into the tube D
with ball or similar valves for raising or forcing liquids and provided with an outlet
tube near the handle. The lower end ; of the pump barrel is reduced or made of a
size to fit into the sleeve G. When the seal is in the form of a leaden disc as shown,
the extremity of the lower end j is reduced to a cutting edge. At or near the handle
pump
is fitted with a projecting lug or finger K which can project down into the
air vent I. The finger K is preferably made pointed and of star shape in cross
section so as only to puncture the disc i and not to cut it out.
the
2
When the pump is inserted into the tube D the projecting cutting part j of the
barrel rests upon the sealing disc F and the finger K is brought to bear upon the
disc i. A slight pressure applied to the top of the pump forces it down cutting or
breaking both seals and it is in readiness for action. A spring catch M acting
against the flange m prevents the pump rising from the tube D.
When the apparatus is required to be brought into operation the pump is inserted
into the tube D'and pressed down until both seals are broken or cut through and the
pump secured by the spring catch M communication is thereby at once opened
between the pump and the interior of the vessel A.
When the vessel A is emptied the catch M may be withdrawn and the pump
removed and applied to another similar vessel and so on to any number. By this
arrangement, a large quantity of the extinguishing liquid may be kept on hand
hermetically sealed in readiness in case of an emergency without the necessity of
having on stock a number of expensive apparatus as one pump will serve any
number of vessels such as A. And further as no damage is done to the vessel
whatever it can be readily refilled and re-sealed at very little further cost than that of
the liquid itself.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I wish it to be understood that
I am well aware that pumps have been connected with portable reservoirs, containing
extinguishing liquids, of hand fire extinguishers for discharging the contents and
that such have also been formed with a piston working in a tube in the form of a
sealed syringe and such I do not claim but i declare that what I claim is :-
1. A hand fire extinguishing apparatus having a removable pump and a tube fitted
into the interior of the reservoir open at the top to receive the pump and hermetically
sealed at the bottom by a leaden disc or other frangible seal which is cut away or
broken by the insertion of the pump barrel substantially as described.
2. In a hand fire extinguishing apparatus the combination with an internal tube
open at the top to receive a removable pump of a chamber opening both into the
pump tube and into the reservoir and a frangible seal placed between the two which
is broken on the insertion of the pump barrel substantially as described.
3. In a hand fire extinguishing apparatus the combination with the removable
pump barrel of a cutter at the lower end to cut the bottom seal with or without a
cutter at the top to cut or open the seal which closes the air vent at one operation
substantially as and for the purposes described.
4. A hand fire extinguishing apparatus with removable pump constructed and
arranged substantially as described and shown.
Dated this th day of August 1890.
WM. P. THOMPSON & Co.,
Manchester, Liverpool and London, Patent Agents.