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Патент USA US2129465

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Sept. 6, 1938.
Filed April'lo, 1937
2 Sheets-Sheet
Sept. 6, 1938,
Filed April 10, 1957
2 Sheets-Sheet
4a. 57
54 55
26 5'0’
46 5387
- ,
A .
a?! ‘PAM
Patented Sept. 6, 1938
'Fred Albert‘ Dodelin, Glen Ridge, N. J., assignor
to Pyrene Manufacturing Company, Newark,
‘N. J., a corporation of Delaware
Application April 10, 1937, Serial No. 136,047
1 Claim.
pinging engagement with the upper, or seating
-' This invention relates to ?re extinguishers of (01.169-31)
surface of the ?tting I4 so’ as to provide an air
and liquid-tight seal between such ?tting and
compressed gas is employed as a source of pres
the type wherein av cartridge containing highly
sure fluid which», when the cartridge is punc
tured, is rendered available within the ?re ex
tinguisher as a pressure medium for expelling the
adapted to receive the externally screw-threaded
extinguishing liquid therefrom.
An important object of the invention is to
provide a generally improved extinguisher of the
type mentioned which is simple in construction,
easily assembled, inexpensive to manufacture, re
liable in operation, and which may be easily re
conditioned for use by replenishing the supply
ofextinguishing liquid and by substituting a new
151 cartridge for the one previously. discharged.
Other objects and advantages ofthe' invention
will become apparent from the following descrip
tion, taken in connection with the accompany
ing drawings, in which
Fig. 1 is a plan view of a ?re extinguisher em
as a source of pressure ?uid to expel the ex
tinguishing liquid from the container II] when
the extinguisher is put into operation, the con
tents of the cartridge being normally retained
therein by a suitable seal 25 which is adapted to 151
be punctured under conditions hereinafter more
particularly described.
The ?tting I‘! is drilled or otherwise formed
disposed a screw-threaded plug-like retaining 20
Fig. 2 is a fragmental view showing the ?re
extinguisher partly in elevation and partly in
Within the chamber 26, there is ar
ranged a piercer-actuating rod 28, the upper end
of which projects through the disc 21 and within
disc 21.
the lower end of which is carried a screw~thread~
Fig, 3 is an enlarged central, vertical, sectional
view of the cartridge-piercing and valve-actuat
ing head, and
ed stem 36, which is provided at its lower end with
a substantially square guide plate 3| and a suit
able punch-like piercer 32 by which the cartridge
Fig. 4 is a horizontal, sectional View taken on
line 4-4 of Fig. 3.
neck portion of the sealing head 22 of a cartridge
24, carrying a highly compressed gas, such‘ as
carbon dioxide, which is adapted to be employed
with a chamber 26 in the upper end of which is
bodying the invention,
head when the extinguisher is conditioned for use.
The ?tting I1 is provided at its lower end with
a depending internally screw-threaded ?ange 2 I,
The extinguisher, herein shown, includes a liq
uid container I6, the cylindrical side wall and the
upper end wall of which are formed integral with
each other, and the lower end wall of which com
prises a base II, having‘ an upstanding marginal
35 ?ange I 2, within which the lower end of the cylin
drical wall is so secured as to provide an air and
liquid-tight joint. To the upper end wall of the
container II], there is connected an annular ?t
ting or head-support l4, having a depending
40 skirt I5, which serves to insure the container
against being ?lled beyond a predetermined level
so as to provide an air space above the liquid
level which is su?iciently large to accommodate
a substantial quantity of pressure ?uid when
45 initiating the operation of the extinguisher in
the manner hereinafter more particularly de
The head-support I 4 is adapted to detachably
receive a cartridge-piercing and valve-actuating
50 head I6.
This head includes a plug-like ?tting
H, the lower end of which is adapted for screw
threaded connection with the annular ?tting or
head-support I4 and is there provided with a
gasket-receiving ?ange I8, with which is associ
ated a gasket 20, adapted to be forced into im
seal 25 may be ruptured. The disc 21 functions
in association with the guide plate 3| (the corners
of which engage the wall of the chamber 26) as
means for maintaining the piercer-actuating rod
28 in a coaxial relation to the chamber 26 so‘
as to insure proper alignment of the piercer 32
with the puncturable area of the cartridge seal
25. Upon puncturing the cartridge seal 25, the
pressure medium is directed from the cartridge
24 into the space or chamber afforded intermedi
ate the sealing head 22 and the guide plate 3I
(which chamber communicates with the liquid
container ID by way of a pair of apertures 34
formed in the depending ?ange 2 I), and in order
to insure against escape of the pressure medium
from the chamber 26 except by way of the aper
tures 34 there is provided a sealing bellows 35,
the lower end of which is in gas-tight union with
the piercer-actuating rod 28 and the guide plate
3I and the upper end of which is held in gas-tight
union with the ?tting IT by the retaining disc 21.
Adjacent the chamber 26 there is formed a sim
ilar chamber 36, the bottom‘ Wall of which is 50,1
formed with a valve seat 31 and a liquid discharge '
port 38, which is coaxial with respect to the valve
seat and within which is secured a depending
pick-up tube 46, the inlet end of which is located
at the bottom of the liquid container l0 and at
move downwardly. In order to insure downward
movement of the valve stem 4| and upward move
ment of the piercer-actuating rod 28 as the actu
with the valve seat 31, whereby communication
to rotation of the hand-wheel 56 in a clockwise
direction as viewed in Fig. 1, there is provided a
of the pick-up tube 40 with a conventional hose
and-nozzle unit 44 may be either severed or es
ating sleeve 54 is moved downwardly in response
valve stem is substantially square so as "to afford
thrust washer 58 which surrounds the lift rod
48 and engages the upper end of the valve stem
4| and the lower end of the actuating sleeve 54.
It is desirable to guard the hand-wheel 56
against accidental displacement, as when the ex
tinguisher is resting dormant in condition for
a clearance between itself and the wall of the
:use, and to thatend the ?ange 55 is provided
tablished,, it being observed that the hose-‘and
10 nozzle unit (which is connected to the ?tting I7)
is maintained at all times in communication with
the chamber 36 and that the lower end of the
28, will then cause that rod to simultaneously
a slight distance from the lower end wall thereof.
Within the chamber 36, there is arranged a valve
stem 4|, the lower end of which is equipped with
a sealing disc 42 which serves as a valve, adapted
to be moved into and out of sealing engagement
chamber. It will also be observed that "the :four “when encircling yoke 60, adapted to be held
‘by a‘setscrew 6| in ‘any one of a multiplicity of
engage the wall of the chamberg36 and that the . positions of rotary adjustment. This yoke 6|] is
upper end of the valve stem ‘projects ‘through‘a provided with a-sccket-like sleeve 62, which is
corners of the lower end of the v‘alve’stem -4-_|
screw-threaded plug-like retaining disc; 45 which 1 adapted to assume a position of registration with
20 is disposed in the upper end of the chamber 36
an aperture 64 formed in the hand-wheel 56 so 20
and serves in conjunction vn'th the 'lower'end of
the valve ‘stem as. means for ‘maintaining the
valve stem in’proper position Ito-"insure accurate
seating of the sealing disc v'42 on'th'e valve seat
25 31. "In order to insure against ‘the escape-of liq—
as to permit va retaining-pin 65 to be passed
through that ‘aperture and into ithe-‘sockét-like
uid from the chamber '36, except’ by way of the
hose-and-nozzle unit 44,'th'ere is‘provided a seal
ing bellows 46, the lower'end of iwhichisihliq
uid-tight union with the valve stem and'the upper
30 end of which is held in liquid-tight union with‘th'e
?tting IT by the retaining disc'45.
‘In the type of extinguisher to which'the' pres
ent'invention is directed, it‘is des'ir'able‘to insure
sleeve, the retaining pin being preferably lcon
nected by ‘a'c'hain 66 ‘to the ‘encircling yoke '60
at a pointladjacent the socket-like ‘sleéveithereo'f. 25
Proper rotary adjustment of the encircling yoke
60 may be determined, at the time ‘the citin
guisher is "assembled in’ the ‘factory, by the posi
tion that the hand-wheel aperture“ ‘occupies
when the valve stem 4| is 'in :its lowermost -'o'r 30
valve-closing position, it being understood ‘that
once such adjustment is determined the encir
cling yoke 60 may be'locked on-the-ilan‘g'e55-by
opening of the liquid dischargeport immediately
the set screw ‘6|. ‘Although th'e‘retainin'g‘pinWS
35 prior to puncturing the cartridge and to be able
is adapted to effectively insure ‘against-accidental
to eiiect such operations through‘the medium of
displacement of the hand-‘wheel'56, as’when‘ the
a single control means. Takingith'e'se factors ‘into
extinguisher is resting dormant and is conditioned
account, the piercer-actuating rod 28 ‘and ‘the
for use, it may be readily removed in the'case'? of
valve‘stem 4| are so connected by=a rocker arm
emergency to permit the extinguisher'to’beplaced
in operation by turning the hand-wheel in a 40
40 4'! as the valve stem is moved-‘upwardly to‘open
the liquid discharge port 38 ‘the ‘piercer-actuat
ing rod‘28 is moved downwardly topuncture the
counterclockwise direction, vas 'a result " of ‘which
the valve 'stem‘4l' is lifted 'so'as to‘ open'the liquid
cartridge. The rocker arm '41 is pivotall'y'com
nected at one end to the'upper end of‘the piercer
discharge port 38 and the pier‘c'er-actu‘ating rod
actuating rod'28 and is‘ connected’at its other ‘end
32 to puncturethe ‘cartridge.
Upon opening'the'li'quid discharge‘port 38 and
upon puncturing the cartridge 24, the‘e'xtinguish
er is'automatically‘set into operation by reason
to the upper end of the valve stem"4| at a point
where‘that'stem is connected to'a ‘lift rod ‘14-8,
the rocker arm being pivotally 'supported'on‘a
bearing pin or screw '50 which passes v‘through
50 and'is' supported by the sidewalls "of‘a capélik'e
housing'5l which is held in'position'on*th'e~?t—'
ting H’ by‘ a plurality of retaining ‘screws 52. In
order that unobstructed operation of the rocker
arm' 47 may be permitted, the pivotal connections
55 between that arm .and the piercer-actuating rod
28 is moved downwardly so as to cause the piercer
of the fact that the pressure medium,>asit-i's re
leased from the cartridge, builds up *a " pressure
over the ‘extinguishing liquid‘vwithin'rthe liquid
container ' I 0 and‘ forces it‘ upwardly through'the
pick-‘up tube ‘ 40 ‘ and out of the Yhose-and-nozzle
unit *44-by Way‘of ‘the liquid discharge port~38
and the-chamber 36 (with "the latter=of " which
28 and valve stem 4| maybe so made as to aif'ord
the hose—and-nozzle unit' directly communicates),
such lost motion (which at the mostjis-onlyvery
slight) as is necessary to’allow thepivot axes to
the pressure ‘derived from the contents‘aof "the
cartridge being such as to- effect complete‘ evacu
ation of the fire extinguishing‘ liquid and-‘at the
shift with relation to the rocker arm ‘lengthwise
60 of the same. Surrounding the lift'ro'd 4'B,'"is"an
externally screw-threaded actuating sleeve "54
which is adapted for rotation‘with relation to the
lift rod and iscarried within ‘an internally 'screw~
threaded flange 55 projecting upwardly from and
65 forming a part of the cap-like housing 5|. To
the upper end of the actuating-sleeve 5.4, there
is splined or otherwise suitablyconnected a hand
wheel 56, which is held against removal by a thrust
ring‘51 secured to the upper end of'the'lift rod
70 48. Inasmuch as' the actuating sleeve '54, when
rotated in a counterclockwise‘ direction ‘as viewed
in Fig. 1, moves upwardly, the thrust ‘ring 51 will
serve to’insure corresponding‘upward movement
of the valve'stem 4|, which, because of its rocker
arm connection with't‘he 'piercéreactuating ~rodvv
same time maintain a substantially uniform rate
of - ?ow ' of such liquid" throughout the entire ‘dis
charge period.
Pursuant to an operationof'the extinguisher,
it-may'be readily reconditioned for'use- by v're
moving the valve-actuating head 16 (removal
being facilitated bythe pairof handles "61 with
which the head is provided), running the hand
w-heel ‘56 -down»to suchlposition-thatrthe liquid
discharge port-38 ‘will be closed'(in'which"case
the retaining pin 65~may be inserted through‘ the
aperture~64“and~into the socket-like slee've‘62),
substituting "a new cartridge for the discharged
cartridge 24, ?lling the ‘liquid container ‘10 ‘to
a-pproximately‘the horizontal center'line of "the
peep or'sight window-68 provided in the ‘wall-or
the liquid chamber and then replacing the valve
actuating head 16.
Preferably, the extinguisher is equipped with
suitable means to facilitate its being carried from
place to place, such means being herein illus
trated as including a container-embracing clamp
ring 10, having an opening ‘H formed therein to
accommodate the peep or sight window 68 and
provided with wing-like ears 12 to which are
10 connected, as by snap hooks 14, the opposite ends
of a shoulder strap 15.
Although only one form of the invention is
herein shown and described, it will be understood
that various changes may be made without de
15 parting from the spirit of the invention or the
scope of the following claim.
What is claimed is:
In a liquid ?re extinguisher of the cartridge
type, a cartridge puncturing and valve actuating
20 head comprising a ?tting having a pair of cham
bers formed therein, a piercer-actuating rod ar
ranged for longitudinal movement within one of
said chambers and projecting upwardly there
from, a valve stem arranged for longitudinal
movement within the other of said chambers and
projecting upwardly therefrom, a cap-like hous
ing seated on and detachably connected to the
upper end of said ?tting, a rocker arm pivotally 5
supported above said ?tting and within said cap
like housing and pivotally connected at one end
to the upper end of said piercer-actuating rod
and at the other end to the upper end of said
valve stem, a lift rod connected to said valve stem 10
and projecting upwardly through said cap-like
housing, an actuating sleeve rotatable on but
longitudinally immovable on said lift rod and
having a screw-thread connection with the top
of said cap-like housing, and a hand wheel rigid
ly connected to the upper end of said actuating
sleeve above said housing for rotating said ac
tuating sleeve and imparting longitudinal move
ment to said lift rod with resulting movement of
said piercer-actuating rod and valve stem in 20
opposite directions.
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