Improvements in Hand Fire-extinguishers.
Year: 1897

page_text: Date of Application, 5th Oct., 1897-Accepted, 12th Feb.,
1898
COMPLETE SPECIFICATION.
Improvements in Hand Fire-extinguishers.
I, SAMUEL MASTIN STEVENS, of 92, Manchester Street, Manchester, County of
Hillsboro, State of New Hampshire, United States of America, Manufacturer,
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 certain improvements in hand fire extinguishers, and
the object of the invention is to provide certain improvements in hand fire
extinguishers whereby a most simple, durable, and efficient hand fire extinguisher
is produced normally sealed and closed and adapted to hang from a suitable sup-
port, and which on being pulled from the support will become severed from the
sealing means thereby opening the extinguisher so that the contents can be
discharged therefrom.
The invention consists in certain novel features of construction and in com-
binations and in arrangements of parts as more fully and particularly pointed out
and described hereinafter.
Referring to the accompanying drawings
Figure 1, is a side elevation of a fire extinguisher constructed in accordance with
my invention and suspended from a support.
Figure 2, is a rear elevation of the upper part thereof.
Figure 3 is a vertical section through the upper portion of the extinguisher
tube.
Figure 4, is a side elevation of the tube with the sealing means removed.
Figure 5, is a side elevation of the upper portion of the tube showing the sealing
means separated therefrom and in the act of bending up and disconnecting from
the tube sustaining rod.
In the drawings a, is an elongated tube-shaped vessel closed at the lower end
and at its opposite end having the tapered discharge nozzle terminating at the
outer end in the discharge opening a¹, around which the edges of the nozzle are
cut or otherwise serrated or formed to constitute the series of rigid points, teeth,
serrations, or projections b, around the opening and arranged radially thereof and
extending into the discharge passage for the liquid. The projections are preferably
bent to extend into and radially of the liquid discharge passage. These points are
preferably formed of the material constituting the nozzle, and are, preferably,
arranged directly at the discharge opening from the nozzle, although they can be
extended into the discharge passage at other points than the extreme end at the
opening. Such a nozzle is of great and material utility in many and various
connections for spraying liquids, as in lawn sprinklers, hose nozzles, etc. I there-
fore do not separately claim it as forming part of my present invention, but intend
to obtain separate Letters Patent in respect thereof.
The hand tube or vessel a is adapted to contain any suitable liquid fire extin-
guishing chemical which on being sprinkled at the base of a fire will exhaust

page_text: the oxygen and smother the fire. The tube is usually suspended and in case of
need is grasped by the lower portion and wrenched from the suspending means
which thereby severs the sealing means and opens the discharge nozzle so that
the tube can be manipulated by the lower end to throw and spray the liquid
contents over a considerable area and for a considerable distance.
The sealing means preferably consists of a metal cap, usually in the shape of
an inverted cup e, to fit down over the upper end of the nozzle with its lower
surrounding edge fitting around the exterior of the nozzle a distance below the
discharge opening at the end thereof, and sealed thereto detachably around said
edge or at a point below the discharge opening so as to seal the tube. Any suitable
fragile cement can be employed for this purpose, such as soft solder, which will
sever and break away under sufficient down strain on the tube, permitting the
tube to separate entirely from the sealing cap or other means leaving such cap
hanging from the support. The cap is preferably closed throughout except at the
open lower end, although if desired the cap can have a small top opening u, (see
Figure 3) to permit filling of the tube after the cap has been placed thereon, said
small opening being located above and registering with the nozzle discharge
opening. The small opening can be closed by a small plate u', or other means
soldered to the cap over the opening u.
The sealing cap is preferably formed of very thin sheet metal or foil at its
lower edge placed around with the extreme edge turned inwardly around the
ring d³, bent horizontally from the rod or wire hanger d, which has the ring or
eye, at its upper end by which the extinguisher can be suspended from the sup-
port or hook as shown in Figures 1 and 5. The lower end of the hanger extends
laterally or horizontally to said ring, and over said horizontal portion of the hanger,
the hooked upper end c¹, of a tube supporting rod c, passes. This rod is secured
directly and rigidly to the body of the tube and extends upwardly therefrom
with the end extending over said portion of the tube supporting hanger carrying
the sealing means of the tube. By this arrangement the weight of the tube and
its contents is thrown directly to the supporting hanger through said tube supporting
rod, and is taken from the fragile sealing means between the tube and sealing
cap.
When down force is applied to the tube sufficient to sever the tube from the sealing
cap, the hooked end of the tube sustaining rod passing over the supporting hanger,
bends up or laterally and permits release of the tube entirely, and also the ring d²,
arranged inside of the sealing cap tends to strip the cap from the nozzle if any
parts of the same shoulder tear or remain thereon as the tube is being released.
However the invention is not limited to these specific details, nor to the specific
construction of tube sustaining rod, nor the specific scaling cap.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what I
claim is:-
1. The hand fire extinguisher, substantially as described and shown.
2. A hand fire extinguisher having a discharge opening, detachable sealing
means having a hanger, and tube sustaining means extending from the tube to the
hanger, substantially as described.
3. A hand fire extinguisher having a nozzle terminating in a discharge opening,
and a detachable sealing cap extending over the end of the nozzle and closing the
opening, substantially as described.
4. A hand fire extinguisher having a nozzle terminating in a discharge opening
and having spraying points at the opening, and a detachable sealing cap on the
end of the nozzle and over and at a distance from the opening.
5. A hand fire extinguisher having a discharge opening, detachable sealing
means therefor having a hanger, and a sustaining rod from the extinguisher to and
detachable from the hanger to take the weight of the tube from the sealing means.
6. A hand fire extinguisher tube having a nozzle terminating in an opening, and

page_text: a hanger for the tube carrying a sealing cap for the nozzle detachably joined to
the nozzle by detachable sealing means.
Dated this 5th day of October 1897.
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.

page_text: Date of Application, 5th Oct., 1897-Accepted, 22nd Jan., 1898
Improvements in Nozzles.
I, SAMUEL MASTIN STEVENS, of 92, Manchester Street, Manchester, County of
Hillsboro, State of New Hampshire, United States of America, Manufacturer, 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 certain improvements in nozzles.
The object of the invention is to provide an improved discharge or spraying
nozzle, simple, durable and economical in construction and composed of a mini-
mum number of parts, and which can be easily manufactured at a comparatively
low cost and which will divide and spray the liquid being discharged therethrough
over an extended area.
The invention consists in certain novel features of construction, and in com-
binations of parts, and in details of construction as more fully and particularly
described and pointed out hereinafter.
Referring to the accompanying drawings:-
Figure 1, is a side elevation of a tubular body, partially broken away, with a
nozzle constructed in accordance with my invention and applied to the body.
Figure 2, is an end view of the nozzle looking into the discharge opening
thereof.
In the drawings a, is a tubular body provided at one end with a discharge
nozzle, here shown as tapered from its junction with said body to its end dis-
charge opening c.
In the form of my invention, as illustrated by the example shown in the draw-
ings, the metal nozzle tapers to and terminates in the discharge opening and the
end of the nozzle forming the edge of the opening is serrated or otherwise formed
with projecting points d, arranged around and extending radially into the dis-
charge opening.
These points are preferably, although not necessarily, formed directly in or of
the metal constituting the nozzle, and are preferably arranged directly in the
discharge opening from the nozzle, and the points need not be integral with the
mozzle, but could be formed rigid therewith in other ways, nor do I specifically
wish to limit my invention to a tapered nozzle, as a discharge passage otherwise
formed might be provided with such rigid points approximately as herein set
forth.
In the example shown in the drawings, a sheet metal blank can be cut out
by a single stroke of a die with its upper or short end notched, or made up of a
series of points, or serrated, and concaved, and its opposite long edge convexed,
with its ends cut straight.
The blank can then be bent around on a suitable tool or former into the conical
shape shown with its straight edges overlapping. These straight edges are then
soldered together or otherwise united, so that the short concaved and serrated
edge forms the comparatively small discharge opening surrounded by the serrated
wall or edge, while the long convexed edge surrounds the large bottom opening

page_text: of the nozzle, and can lap and be soldered or otherwise joined to the end of the
tube or otherwise formed body a. The rigid points or projections d, are then
bent or curved slightly inwardly into or more radially of the discharge opening or
passage for the liquid, so that the liquid in forcibly passing through the dis-
charge passage is engaged and deflected and divided, and spread, and sprayed, by
said points.
However I wish it understood that I do not limit my invention to forming the
nozzle in a separate piece from the body through which or from which the liquid
passes to the nozzle or discharge passage or discharge. opening.
Advantages are attained by locating the points or projections directly in the
discharge opening, and also by forming a plurality of closely arranged points,
and also by forming the projections tapered to a point by intervening V-shaped
notches, although I do not wish to specifically limit my invention to such features.
The improved nozzle or spraying discharge can be employed in many con-
nections, but can be applied to any kind of a discharging device where it is desired
to spray liquid, although in the example illustrated in the drawings, the nozzle
is shown applied to a hand fire extinguisher to be adapted to contain a liquid
fire extinguishing compound.
It is evident that various changes and modifications might be made in the
forms, constructions and arrangements of the parts described without departing
from the spirit and scope of my invention, hence I do not wish to limit my
invention to the exact construction herein set forth and illustrated.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is
1. A discharge, nozzle terminating in a series of points or projections around
and bent into the unobstructed discharge opening, substantially as described.
2. A discharge nozzle having an end discharge opening, said nozzle tapering
to said opening and terminating in rigid projections at and around and extending
radially into said opening to spray the liquid discharged therefrom, substantially
as described.
3. A nozzle formed of a blank cut at one edge to form an end opening and
serrated or notched at said edge to form the points or projections around the
openings of the 'completed nozzle, substantially as described.
4. A nozzle bent from a sheet metal blank cut, notched or serrated to form
points or projections, which are bent or deflected into and around the liquid
passage of the nozzle, substantially as described.
5. A nozzle having an end discharge opening and the rigid teeth or points pro-
jecting into the said opening from the surrounding edge.
6. A nozzle substantially as herein described and shown.
Dated this Athedor of Tanuom: 1808
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.