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Патент USA US2404804

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‘July so, 1946.
F_ J_ LEE
‘
2,404,804
FIRE EXTINGUISHING DEVICE
Filed Oct. 16, 1944 '
5
.
Patented July 30, 1946
2,404,804
UNITED STATES PATENT OFFICE
2,404,804
FIRE EXTINGUISHING DEVICE
Floyd J. Lee, La Habra, (yaliii,v assignor to John
C. Burnam, Whittier, Calif.
Application October 16, 1944, Serial No. 558,846 .
4 Claims.
(Cl. 169—40)
1
2
This invention relates to ?reextinguishing ap
paratus of the type employed in ?xed installations
member is held in place by means includingyia
fusible link, adapted on the fusing of the link to
allow water or other ?uid pressure behind the
spray head or nozzle to eject the closure member
for automatically extinguishing ?res.
Heretofore in different ?re extinguishing in~
stallations various types of spray heads or nozzles
and allow operation of the apparatus.
have been employed in connection with fusible
link elements for controlling the operation of the
It is an object,'therefore, of the present inven
tion to provide a ?re extinguishing apparatus
spray heads or nozzles. While many different
types of spray heads or nozzles have been em
which includes a closure member for a spray head
or nozzle adapted to enclose the spray head or
ployed in such installations they substantially all it) nozzle and permit the pressure of the ?re extin
guishing ?uid to be continued through the nozzle
include one or a plurality of small ori?ces which
and the closure member.
'
are exposed to atmospheric conditions. The fusi
Another object of the present invention is to
ble link means which are employed for starting
provide a ?re extinguishing apparatus‘ in which a
the operation of the spray heads or nozzles in
closure member for‘ a spray head or nozzle is sup
prior installations have always actuated some
plied, which closure member is adapted to be
type of valve mechanism which controls the sup
ejected by the pressure behind the ?re extin-_
ply of water to the ori?ce orori?ces of the spray
guishing fluid but is also retained from being so
heads or nozzles. These ori?ces frequently be
ejected by means including a fusible release link.
come closed when the nozzles or spray heads are
not operating, with the result that the installa 20 The ?re extinguishing apparatus of the‘present
invention will be understood ‘from the following
tion cannot be relied upon for automatically ex
description of the preferred example of the pres
tinguishing the ?re, when such ?re arises.
ent invention. ‘I’have, therefore, described the
It is the general object of the present invention
preferred example of the invention in connection
to provide a ?re extinguishing apparatus for ?xed
installation which is constructed and arranged 25 with the accompanying drawing, in which
Fig. 1 is a elevation, partly in vertical section;
so as to prevent the ori?ces of the spray heads or
nozzles from becoming plugged, when the appa
Fig. 2 is a section on the line 2—2 of Fig. 1.
ratus is not in operation.
Referring to the drawing, i indicates a supply
In the usual practice of controlling a spray
line for water or other ?re extinguishing ?uid.
head, a valve means is interposed between the
I have elected to show a form of the‘ invention
spray head and the liquid supply means, which‘
in which a so-called “fog nozzle” 2 is employed.
valve means is operated ‘by a fusible link. In ac
The fog nozzle 2 illustrated is of the conventional
cordance with the present invention the means
type which contains a number of pairs of ori?ces
which control the ?ow of ?uid through the spray
3 and 4. Each pair or" ori?ces is arranged to
head is placed beyond the spray head so as to
produce jets of ?uid, which jets impinge one
maintain all of the ori?ces of the spray head im
against the other for breaking up the ?uid into
mersed in ?uid during the period of time when
and
the apparatus is inoperative.
.
Thus in the apparatus of the present invention
instead of interposing a valve mechanism between
the spray head and the source of ?re extinguish
ing liquid, the spray head is surrounded by a
closure element and the ?re extinguishing liquid
allowed to ?ll the closure element and to remain
within and also surround the portions of the spray
head or nozzle. In this manner the spray head
or nozzle is maintained in condition for instant
operation on removal of the closure“ member
-
‘
a uniform spray or fog. Obviously any other
type of nozzle or spray head may be substituted
in the apparatus of the present invention for the
particular fog nozzle 2 illustrated. However the
apparatus of the present invention is of particular
value when used in connection with a fog nozzle
such as indicated at 2 in the drawing for the
reason that such fog nozzles have superior ?re
extinguishing properties, for the amount of water
or ?re extinguishing ?uid employed, over other
types of heads or nozzles.
Utilization of fog
nozzles in ?xed installations has, however, been
therefrom. Means for instigating the operation
of the apparatus is applied by removing, in the 50 considerably hampered by the fact that the
ori?ces of suc‘ip fog nozzles are particularly sus
event of ?re, the closure member from the spray
head or nozzle.
'
In the ?re extinguishing apparatus of the pres
ceptible'to being plugged when exposed to the
atmosphere so that in'past practice the fog
ent invention the spray head or nozzle is sur
nozzles could not always be relied upon for sta
rounded by a closure member and this closure
tionary ?re extinguishing installations.
i
.
2,404,804
4 '
\
The fog nozzle 2 is indicated as attached to the
Since the fog nozzle 2 has been at all times ? led
supply main I by means of a coupling 5 which is
and surrounded with the ?re extinguishing ?uid
threaded to the base 5 of the fog nozzle. A ring
there is no danger of clogging of the ori?ces
‘I is provided which is shown as threaded to the
thereof and the ?re extinguishing nozzle will im
base 6 of the fog nozzle 2. With other types of 5 mediately commence its intended action.
spray heads it is obvious that other means may
It is to be understood that while the particular
be employed for ?xing the position of the ring
example of the invention herein described has
‘I. The ring ‘I is provided with an annular groove
beenproven to be well adapted to carry out the
holding annular, packing 9. ‘A closure member ' objects of the present invention, various modi
ID is formed shaped to enclose the head of the l0 ?cations and changes may be made and this in
fog nozzle 2 and having a ?anged base 8 adapted
vention is not limited to the speci?c example
to engage the packing 9. The particular shape
shown, but is of the scope set forth in the ap
of the closure member I6 will vary in accordance
pended claims.
with the shape of the nozzle or spray head to
I claim:
be covered, being indicated in the drawing as 15 ' 1. An apparatus for exteriorly controlling the
of a dome form and of sui?cient size to be spaced
movement of ?re extinguishing fluid through a
slightly from the fog nozzle 2. The essential
spray head of a ?re extinguishing installation,
characteristic, however, of the closure member
said apparatus including a ring member to be
?xed to said installation, a dome-shaped closure
member for enclosing said spray head and form
ing a ?uid-tight seal with said ring member, and
clamping means for releasably clamping said clo
ID is to provide a closure adapted to ?t over ‘the ‘
spray head or nozzle employed said closure being
closed at its lower end, as indicated at I2; and
adapted'at its upper end to have a liquid-tight
seal with the ring ‘I immovably ?xed to the supply
line 1 I
sure member against said ring-shaped member,
or some element immovably attached
said clamping means including two pivoted levers,
thereto.
In the apparatus of the present invention no
one of which is pressed against said closure mem
ber near the pivot point of said levers, one of said
valve means need be interposed between the
nozzle 2 and the supply main I but it is the in
levers contacting said ring-shaped member, and
enclosed Within the member I0. As thus used it
will be seen that the hydraulic pressure within
'
the closure member II! will act to eject the closure
member I0 from its position unless the member 35
said apparatus including a ring member to be
a fusible link interconnecting the other lever with
tention that the ?re extinguishing fluid will ?ll
said ring-shaped member.
the space within the closure member I0 and 30
2. An apparatus for exteriorly controlling the
thereby surround the nozzle 2 or other spray head
movement of ?re extinguishing ?uid through a I
In is restrained from so moving.
_
Clamping means are‘provided for restraining
the movement of the closure member ID, said
clamping means comprising levers l3 and I4 and
a fusible link I5.
spray head of a fire extinguishing installation,
?xed to said installation, a dome-shaped closure
member for enclosing‘said spray head and form,
ing a fluid-tight seal with said ring member, and
clamping means for releasably clamping said clo
sure memberagainst said ring-shaped member,
said clamping means including two pivoted levers,
The members I3 and I4 are 40
one of which is pressed against said closure mem;
ber near the pivot points of said levers, one 'of
pivoted together, as indicated at I5, and the mem
ber I3 is indicated as adapted to press against
the bottom wall I2 of the closure member, as
indicated at H. The lever I3 is curved upwardly
to about the elevation of the ring 'I and is pro
vided with an ear I8 adapted to engage a head
I9 on the fusible link I5. The fusible link I5 is
. provided with an eye 20 at its opposite end which
said levers'contacting said ring-shaped’ member,
and a fusible link interconnecting the other lever
with said ring-‘shaped member, said fusible link
' being proportioned to apply tension to the link
age for forcing the closure member against said
ring-shaped member.
'
3. Apparatus for controlling from the exterior
?ts over a pin 2I extending upwardly from the
ring 1. The lever I4 is curved upwardly and 60 the discharge of liquid from a spray head of a ?re
extinguishing installation, said apparatus includ
then inwardly as indicated at 22 and provided
ing‘ a ring‘member ?xed ‘to said installation, a‘
with a fork 23, the ends of the fork having
dome-shaped closure member enclosing said head
rounded surfaces 24 for engagement with the
and having its’ open‘ end adjacent to said ring
face of,the ring ‘I. The ring ‘I is provided with
member
?xed to said installation for forming a
an abutment 25 which is adapted to contact the
link “between the fork 23 and thereby limit the
?uid-tight seal, and clamping means including
shifting of the clamping means to the left as
viewed in the ?gure. The link I5 should be made
tacting said closure member near the pivot point,
of su?icient length so that it takes a slight com
two levers pivoted together, one of said levers con-'
said levers being secured to said installation. 7
4. Apparatus for controlling from the exterior
pression or springing of the levers I3 and I4 to
place the clamping element in the position indi 60 the discharge of liquid from a spray head ofga
?re extinguishing installation, said apparatus in
cated. Because of the leverage indicated there
cluding a ring member ?xed to said installation,
is thereby established a very considerable pres
sure against the closure member I ll, forcing a ' a dome-shaped closure member enclosing said
head and haping its open end adjacent to said
compression of the packing material I9 to insure
ring
member ?xed to said installation for form
adequate sealing of the apparatus.
With the apparatus indicated, it will be obvious
that in the event of ?re, fusing of the link I5
by heat will liberate the lever I 3 of the clamp and
thereby permit the clamp to release the closure
member Ill. The closure member 310 will then be
forced from its position covering the fog nozzle 2.
ing a ?uid-tight seal, clamping means including
two levers pivoted together, one of said levers
contacting said closure member near the pivot
point, said levers being secured to said installa
tion, and a fusible link interconnected between
one of said levers and said installation.
FLOYD J. LEE.
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