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Патент USA US2411231

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Navo 19, ì946,
w. RUNDLE ET AL
Zfîì 1,2%
SPEARHEAD NOZ ZLE
Filed May 18, 1944
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Patented Nov. 19, 1946
` 2,411,231
tinnen stares Para
`OFFICE.
2,411,231
SPEARHEAD NOZZLEI
Walter Rundle, Berea, and Harold E. Bruce,
Elyria, Ohio
`
Application May 18, 1944, Serial No. 536,134
3 Claims. (Cl. 299-110)
1
The present invention relates to a ñre fighting
implementJ comprising a Spearhead nozzle adapted
for penetrating walls, ceilings, the sides of an air
plane fuselage, and other objects for the purpose
of introducing a stream of water or chemical to
the interior of a burning structure.
An important object of the present invention is
to provide a Spearhead nozzle of this character
adapted for connection on a pipe section by means
of which the nozzle may be driven through a wall
2
and the cutting edges 6 are longitudinally
rounded, as shown in Figures 1 and 2, Substan
tially in the form of a Spearhead which is wider
at its central portion.
The sides of the nozzles between adjacent cut
ting edges 6 are curved to form channels 8 and
the front portions of the channels are formed
with elongated recesses 9 tapering toward their
front ends and with the rear portions of which
orifices I 0 communicate leading from the chamber
I I at the interior of the nozzle.
of a burning structure, the Spearhead formation
of the nozzle serving to retain the latter in posi
The rear end of the nozzle is formed with a
tion in the wall without necessitating the holding
threaded stem I2 to which one end of a pipe I3
of the Same by the fireman.
may be attached by means of a union or coupling
The invention further comprehends‘the con
I4.
struction of a nozzle of this character adapted
A collar I5 is threaded on the Stem I2 between
for attaching to a ñre fighting axe having a hollow
the rear end of the nozzle and the union M and
handle adapted for supplying water to the nozzle
the collar may be of hexagonal lform to receive a
and by means of which the nozzle may be driven
Wrench and the collar may be cast integral with
into the wall of a burning structure through the 20 the nozzle 5, or may be constructed as a Separate
usual action of swinging the axe.
unit and secured thereto by means of a set screw
A still further object is to provide a nozzle
I6.
‘
of this character to which a funnel member may
The collar I5 may also be externally threaded,
be attached for fighting open fires.
as shown at Il in Figure 4, for threaded connec
An additional object is to provide a device 25 tion with the rear end of a funnel member I8
of this character of simple and practical con
_into which the nozzle projects for use in eX
struction, which is eñicient and reliable in per
tinguishing outside fires.
formance, relatively inexpensive to manufacture
By attaching the nozzle 5 to the end of a pipe
and otherwise well adapted for the purposes for
section i 3, the same may then be used as a spear
which the same is intended.
>
30 or harpoon for driving the nozzle into the wall
Other objects and advantages reside in the de
of a burning object or Structure, the Spearhead
tails of construction and operation as more fully
formation of the nozzle Serving to retain the
hereinafter described and claimed, reference being
nozzle in position in the wall without necessitat
had to the accompanying drawing forming part
ing the holding of the Same by a fireman. Water
hereof, wherein like numerals refer to like parts 35 or suitable chemicals may then be discharged
throughout, and in which:
through the nozzle for extinguishing the fire on
Figure 1 is a side elevational view of the nozzle.
the interior of the structure.
Figure 2 is a longitudinal sectional view there
The pipe section I3 may be covered with a hose
through.
or other material, as shown at I9 in Figure 4.
Figure 3 is Aan end elevational View.
In Figure 5 of the drawing we have illustrated
40
Figure 4 is a side elevational view showing the
a fire fighting axe 26 to the head of which the
funnel member attached to the nozzle and with
nozzle 5 may be attached by` threading the stem
parts broken away and in section.
I2 therein, the axe being provided with a hollow
Figure 5 is a fragmentary side elevational view
handle 2| and the head 2D likewise being hollow
of the nozzle attached to a fire fighting axe.
45 to provide communication or connection between
Referring now to the drawing in detail, and ñrst
the handle and the nozzle, In using this form
with respect to the form of the invention illus
of the invention, the axe may be swung in the
trated in Figures 1 to 3, inclusive, the numeral 5
usual manner for driving the nozzle into the
designates the nozzle generally, which is of taper
wall of an object for extinguishing the ñre therein.
ing form having longitudinally extending cutting 50 It is believed the details of construction and
edges 6 formed on the sides of the nozzle and
manner of operation and advantages of the device
spaced circumferentially at Substantially 90
will be readily understood from the foregoing
Without further detailed explanation.
Having thus described the invention, what we
edges 6 taper to a substantially sharpened point 1 55 claim is:
degrees from each other, as shown in Figure 3
of the drawing. The front ends of the cutting
2,411,231
3
4
1. A ñre ñghting nozzle adapted to be attached
to a conduit for fire-extinguishing iluid compris
ing a Spearhead-shaped hollow body, a plurality
of longitudinally extending cutting edges formed
on the body, said body having longitudinally ex
tending channels in the sides thereof between said
cutting edges, said channels having recesses in
the front ends thereof and oriñces communicat
ing With tlife recesses leading fro-m the interior of
nels in the4 sides of the body, said channels having
the body.
`
'
recesses in the front ends thereof and orifices
communicating with the recesses leading from
the interior of the body.
3. A ñre ñghting nozzle adapted to be attached
to a conduit comprising a Spearhead-shaped hol
low body, a plurality of longitudinally extending
cutting edges formed on the body, said body being
concaved between said cutting edges, `and having
longitudinal recesses in the front'ends of the con
cave portions ofthe body and orifices communi
eating with the recesses leading from the interior
~
2. A ñre ñghting nozzle adapted to be attached
to a conduit for fire-extinguishing iluid compris
ing a Spearhead-shaped hollow body, a plurality
- of longitudinally extending arcuate, diametrically
,
` of the body.
opposed cutting edges formedlongitudinally on 15
the body, defining longitudinally extending chan
WALTER RUNDLE.
HAROLD E. BRUCE.
~
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