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Патент USA US2119103

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May 31, ‘1938.
J_ GRlSON
' I
2,119,103
FIRE ALARM AND EXTINGUISHER
Filed April 16, 1935
INVENTOR
474A
, , TTORNEY ,
2,119,103?
Patented May 31, 1938
UNITED STATES
PATENT OFFICE
2,119,103
' FIRE ALARM AND EXTINGUISHER
Joseph Grison, New York, N. Y., assignor to
National Fire Detector Corporation, a corpora
tion of Delaware
Application April 16, 1935, Serial No. 16,696
14 Claims. (Cl. 169-26)
This invention relates to certain new and useful‘
improvements in self-contained, temperature
controlled ?re extinguishers and ?re alarms, of
the type disclosed in my Patent No. 1,987,590,
5 dated January 8th, 1935, and the primary object
of the invention is the provision of a self-con
tained ?re extinguisher and ?re alarm device
which is provided with temperature-responsive
means adapted to cause the device to extinguish
10 the ?re and to sound an audible signal as soon
as a predetermined temperature is attained with
in the enclosure in which the alarm device is
located.
A fiu'ther object of the invention is the pro
15 vision of a ?re extinguisher and ?re alarm device
of very simple construction, the component parts
of which are so assembled and arranged as to
eliminate any likelihood of the device becoming
jammed or sluggish, and reducing the manufac
2 turing costs to a minimum.
Other objects of the invention are attained
by the novel constructions, combinations and ar
rangements of the components hereinafter de
scribed and shown in the accompanying drawing,
2 in which like reference characters indicate like
parts throughout the several views, and in which:
Fig. 1 is a front elevation of the device With a
part of the gong broken away, showing the im
pact hammer and some of its associated parts;
Fig. 2 is a side elevation of the device with the
30
gong broken away, showing the spring motor, the
impact hammer and the manner in which the
gong is mounted.
Fig. 3 is a sectional view taken on the line 3-3
of Fig. 2.
Fig. 4 is an enlarged sectional View of the
thermostatic locking strip and its associated
parts, and,
Fig. 5 is an enlarged sectional view on the line
40 5-5 of Fig. 4.
Now referring more particularly to the draw
ing forming a part of this application, the de
vice is illustrated to include a bell‘ I0, of a gong
type, a cartridge containing a ?re extinguishing
45 agent and means, actuated under certain thermal
conditions, to release and break said cartridge
and to produce an audible signal by impact with
the hell or gong.
Such means as above referred to include a
50
spring-motor ll, of the well-known clock type.
A- frame consisting of three plates l2, l3 and M
are held in spaced relation by bolts l5. Posi
tioned between the plates l2 and i3 is a?at coiled
spring 16, one end of which is connected to- one
of- the bolts 15, the other end being secured to a
drive-shaft ll, extending from its journal in the
plate l2 through the plates I3 and I4 and passing‘
through a sleeve l1’ welded or otherwise fastened
to the plate 14. A large power gear I8 is ‘loosely
mounted upon the drive shaft l1 and carries 5
therewith a spring-actuated pawl I9, which en
gages a ratchet wheel 20, keyed to the drive shaft,
thereby permitting the winding of the coiled
spring without disturbing the large power gear
I8 and its associated gears and pinions. The
power gear l8 transmits its power to the hammer
or plunger by way of the pinion 2|, ?xed to a
shaft 22, to which is also secured a gear23, mesh
ing with a pinion 24 mounted on a shaft 25, which
latter has ?xed thereto a gear 26, meshing with
a pinion 21, which is secured to a shaft 28 and
meshes with a gear 29, ?xed to a shaft 30, to
which a crank wheel 3| is also secured.
It will readily be observed that‘, through the
gear train as just described, a rapid rotation is
transmitted from the drive gear l8, to the gear
29, and the crank wheel 3|. This rotation is
now transformed into a reciprocatory motion of
the impact hammer 32, through the pitman 60.
The hammer 32 is slidably mounted upon the
plate ill, and within guides 34 ?xed to the plate
I4, said plate being provided with extended por
tions 35 in the form of ribs upon which the impact
hammer 32 reciprocates, thereby decreasing fric
tion and preventing undue accumulation of oil‘ 30
and dust between the plate I4 and the impact
hammer 32, and the possibility of preventing the
free reciprocation of the impact hammer.
As a means of locking the hammer against
reciprocation, I have provided the hammer 32
with a pin, 36 normally engaged by a ?at strip 31
of thermostatic metal lying in a plane parallel
to the plane in which the hammer reciprocates.
The strip 31 is attached to a standard 38, by
means of a knurled nut 39, which standard is 40
riveted or otherwise properly ?xed to the plate
14. The top of the pin 36 is rounded off at
one end and will engage strip 31 upon one side,
to wit, the locking side, and prevent any improper
cessation of the reciprocation of the hammer, as
would likely be the case if the pin 36 were pro‘
vided with a ?at top.
A cartridge or bomb 3B’ of glass ?lled with a
?re extinguishing agent which will vaporize and
smother a ?re over an area of approximately 4,000 50
cubic feet, is held suspended an appreciable dis‘
tance from the ?oor by a latch mechanism, op
erated by the movement of the hammer 32.
The latch mechanism includes a movable arm
31' which extends through the plate Mi, having 65
2
2,119,103
one of its ends terminating in a projection 38',
and in direct alignment with a spring actuated
button 39', fastened to the plate l3, and its other
end extending beyond its pivot 40, between pro
jections 4| upon the underside of the hammer 32.
It will be observed that any‘ movement of the
hammer 32 will move the projection 38’, through
its arm 31', out of alignment with the button 39’,
allowing the cartridge or bomb to fall to the floor
10
and break, thereby releasing the ?re extinguish
ing agent, which will vaporize and smother the
?re and, at the same time, sound an audible sig
nal.
In operation, when a predetermined high tem
15 perature is reached in the enclosure housing the
device, the metal strip 3‘! will curl outwardly, as
shown in dotted lines in Fig. 4, and out of the
path of pin 36, and release the impact hammer
32. The unwinding of the spring IE will cause
20 rotation of the crank wheel 3|, to rapidly recip
rocate the impact hammer 32, so that the curved
end 32' thereof will strike the gong I0 and pro
duce a very loud alarm which will continue for
an appreciable duration of time, or so long as
25 the thermal condition exists, and release the car
tridge to extinguish the ?ames.
From the foregoing description it will be clear
that I have provided a simple and e?ective self
contained ?re alarm device which will automat
30 ically release the ?re extinguishing agent and
produce an audible signal when a predetermined
temperature has been attained, and which is
capable of resetting itself after the temperature
35
decreases.
The gong I0 is held in position by the knurled
nut 50 screwed upon the sleeve II’, which is
rigidly attached to the plate I4 of the spring
motor framework.
I have provided the spring motor with a drive
40 shaft [1, having a permanent key 42, thereby
' permitting an authorized operator to have access
to the winding mechanisms of the motor, by the
utilization of said key.
For the purpose of positioning and attaching
the complete device to a wall or any other sup
port, I have provided a metal eyelet secured to
the plate I2.
Modi?cations of this invention may be sug
gested to those skilled in the art to which the
50 invention pertains, but I claim as my invention
all structures falling fairly within the scope of
the appended claims.
I claim:
1. In a combined ?re detector, extinguisher,
55 and alarm, an alarm ringing member, actuating
means normally tending to operate said mem
ber, a temperature controlled member to hold or
release said alarm ringing member, a ?re extin
guishing agent, and means whereby said alarm
60 ringing member upon being operated releases said
extinguishing agent.
2. In combination, a gong, a ringing member
therefor, actuating means normally tending to
operate said ringing member, means to hold said
65 ringing member and actuating means inopera
tive until a predetermined temperature is reached,
a ?re extinguisher, and means controlled by said
ringing member to release said extinguisher by
the operation of said ringing member.
70
3. In combination with a gong, a reciprocable
member whereby said gong is rung, actuating
means normally tending to operate said‘ recip
rocable member, means to hold said reciprocable
member inoperative until a predetermined tem
75 perature is reached, a ?re extinguisher, and
means controlled by said reciprocable member
to release said extinguisher by the operation of
said reciprocable member.
4. In combination, a gong, a ringing member
therefor, actuating means normally tending to
operate said ringing member, a projection carried
by said ringing member, means to engage said
projection and hold said ringing member inoper
ative until a predetermined temperature has been
reached, a ?re extinguisher, and means controlled
by said ringing member to release said extin
guisher by the operation of said ringing member.‘
5. In combination, a gong, a member adapted
to repeatedly strike said gong, actuating means
for said member, a projection carried by said
member, a thermostatic strip normally engaging
said projection to hold said member inoperative
until a predetermined temperature has been
reached whereupon said thermostatic strip re
leases said projection, a ?re extinguisher, and 20
means controlled by said member to release said
extinguisher by the operation of said member.
6. In combination, a gong, a clapper for said
gong, means normally tending to operate said
clapper into and out of engagement with said
gong, a plate on which said clapper is mounted,
means whereby said clapper is held inoperative
until a predetermined temperature has been ob
tained, an arm actuated by said clapper and pro
jecting through said plate, a ?re extinguisher,
and means whereby said extinguisher is released
when the said arm is actuated.
'
7. In combination, a plate, a stud mounted on
said plate, an arm having a projection normally
in aligned engagement with said stud, a ?re ex
tinguisher adapted to be supported by said stud
and projection, and temperature responsive
means whereby said arm may be moved so as
to carry said projection out of alignment with
said stud so as to drop said ?re extinguisher.
8. In combination, a stud and a projection, a
?re extinguisher, means whereby said ?re ex
tinguisher is supported on said stud and pro
jection when they are in alignment with each
other, and temperature controlled means to move
said projection out of engagement with said stud 45
when a predetermined temperature has been
reached so as to drop said ?re extinguisher.
9. In combination, a frangible ?re extinguisher,
two members, said ?re extinguisher being nor
mally supported by the conjoint action of both
of said members, means whereby one of said
members may be moved away from the other
member so as to. drop said ?re extinguisher, said
means including a bell clapper, and means oper
atively connecting said bell clapper to said mov 55
able member.
10. In combination, a bell clapper, actuating
means therefor, heat responsive means to hold
said clapper inoperative until a predetermined
temperature has been reached and to release said
bell clapper when said predetermined tempera
ture has been reached, an arm controlled by said
clapper, a projection carried by said arm, a ?xed
support, a projection carried by said ?xed sup
port, a frangible ?re extinguisher suspended on
said projections, and means operatively connect
ing said clapper and arm so that the projection
carried by said arm will be moved away from
the projection carried by the ?xed supportso as
to drop said ?re extinguisher when the clapper
is operated.
11. In a combined ?re alarm and extinguisher,
a bell, a plunger, means to guide the plunger in
a straight line, spring means to reciprocate the
3
2,119,103
plunger into and out of contact with the bell,
means to release the plunger when the tempera
ture reaches a predetermined point and adapted
to restrain the operation of the plunger when the
temperature is below the predetermined temper
ature, a frangible container for a ?re extinguish
ing means, said container being mounted so that
it can be released and means controlled by the
plunger to release the container when the plunger
10
20
is operated.
12. In a ?re alarm device and extinguisher,
a bell, a plunger, a revolution crank connected
to the plunger, spring means to operate the crank
to cause the plunger to reciprocate longitudinally
of its length into and out of contact with the bell,
temperature controlled means to hold the plunger
in inoperative condition until the temperature
has reached a predetermined point and there
upon to release the plunger, a frangible container
for a ?re extinguishing composition, means con
trolled by the plunger to partially support the
container while the plunger is held inoperative,
and means to release the partial support so as to
13. In combination, a bell, a plunger, means to
normally hold the plunger inoperative and to re
lease the plunger when the temperature reaches
a predetermined point, means to cause the plung
er to be operated when released, a frangible con
tainer, means whereby the said frangible con
tainer is normally supported, and means oper
ated by the plunger to release the container by
the plunger when reciprocated.
14. In combination, a bell, a plunger, temper 10
ature responsive means to hold said plunger
against reciprocation when the temperature is be
low a predetermined point and to» release it when
the temperature reaches a predetermined point,
means to operate the plunger when the plunger 15
is released, a container for a ?re extinguishing
agent, a ?xed support and a movable support on
which the container is mounted, and means actu
ated by the plunger to remove the movable sup
port laterally out of engagement with the ?xed 20
support by the plunger when operated, so as to
release the container.
drop the container by the plunger when recip
b? Di
rocated.
JOSEPH GRISON.
25
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