US1921452A - Fire extinguisher - Google Patents

Description

Aug. 8, 1933- w. B. BRONANDER FIRE EXTINGUISHER Filed June 14, 1930 2 Sheets-Sheet 1 m ATTORNEY w. B. BRONANDER 1,921,452

FIRE EXTINGUISHER Filed June 14, 1950 2 Sheets-Sheet '2 INVENTOR lW/fie/m B Bro/hinder BY *4 ATTOR NEYS L a w 5 Aug. 8, 1933.

Extended Aug. 3,

w 1} Uurref 1 r'rss FIRE ExtrrNGUrsnER 'tiiihelm .B. Bronander, Montclair, N.-J. hiuziieationduneie, 193s. Serial No. 461.1411

.6 Claims. ,(Ci. 16926 This invention relates to fire extinguishers. ll lore particularlystated, the invention relates to the type of extinguish r in which fire extinguishine liquid is ejected from the receptacle. or 5 container by pressure. U I The invention has for its salient object to pro-- vide'an extinguisher of the character described, so constructed and arranged that the liquid'can be released by pressure obtained by manipulation of a pump or by the release or a compressed charge. I L Another object of the invention is to provide an extinguisher of the character described, so

- constructed and so mounted that the. extinguisher will be automatically set in operation in case of fire or can, if desired, be manually operated. y 4

Another object or" the invention is to provide a plurality'of automatically operable heat controlled mechanisms so constructed and arranged that the extinguisher willbe automaticallyop erated in case of and an alarm will be sounded. 5

Another object of the invention is to provide an extinguisher, an automatic control mechanism therefor adapted particularly for instal lationand operation in motor vehicles, and so constructeiarranged and mounted that the extinguisher can be manually operated when desired or will operate automatically in case of fire.

Further objects of the invention will appear from the following specification taken in con} nection with the drawings, which form a part of this application, and in which p Fig; 1 is a sectional elevation showing an extinguisher.andrnounting constructed in accordance with the invention; Fig. 2 is an elevational view taken at right angles to Fig. 1 and showing the extinguisher. supporting plate or bracket and parts carried thereby; 1 I 7 vFig. Bis a top plan view looking the direction of the arrows 3-3 oiFig. 1; Y 1

Fig. 4 is a detail elevation on an enlarged scale showing the clip for holding the copressed charge cartridges;

9 tially on line 5-5 of Fig. 3, parts being. omitted for the sake of clearness; I

. Fig.6 is a sectional elevation sin ilar to .Fig.

' .Fig. 5 isa sectional elevation taken substanof themounting for the extinguisher shown in Fig.6; q Q

Fig.8 isan enlarged sectional elevation showing the discharge end of theconduit for conducting the extinguishing liquid to a position above the motor of a vehicle; and

Fig; '9 is a diagrammatic sectional elevation showing the arran ement of the extinguisher on the motor vehicle.

The invention briefly described co'nsistsof an exting isher comprising a receptacle or container and a plurality of cartridges having a compressed charge ofgas therein adapted-upon release to eject the fire extinguishing liquid from the container.. Means is provided for releasing the gas "from the cartridges by manual operation or automatically in case of fire.-p

In one embodiment of the invention a pump is mounted in the receptacle or container and can be used to furnish. the power required to eject the liquid from the container. In this form of the invention the airpressure from the pumpis conducted to a'conduit which also communicates with :the casing having the compressedcharge cartridges therein. Means is also rovided'for preventing back pressure in the pump upon the release of the charge from the cartridges; l

Inanother form of the invention the mount ing for the extinguisher is particularly adapted for use on motor vehicles and means is provided for conducting the fire extinguishing liquid ejected from the receptacleto a position above the motor. V

Further'details of the invention will appear. from the following description.

"In th form of the invention illustrated in Figs. 1 to 5 inclusive, the extinguisher comprises a receptacle or container-15 having ahead 16 at the upper end thereof. The head 16 has a downwardly extending boss 17 to'which is secured a pump cylinder 18 which extends downwardly in the receptacle. [A bushing 19 is secured to the upper end of the cylinderand boss and a pump piston rod 20 is slidably mounted in the bushing 19. .A'handle 21 is secured to the upper end of the rod.

In order to hold the piston rod down when it "is 'not'in use, the shank or handle 21 has formedgthereon a laterally extending lug22 and an offset lug 23 isprovided on the bushing 19. An indentation, or depression 24 is formed on the underside ofrthe lug Z2 and is adapted to receive a ball 25 which is pressed upwardly by' aspring- 26 mounted, in a pocket '27'iormed in the bushing 19. The lugs22 and 23 are arcuate in shape, as shown in Fig. 3, and in order to release the pump piston rod it is merely necessary to rotate the handle and rod to a sufficient extent to release the lug 22 from beneath the lug 23 which overhangs lug 22.

The piston rod has a flexible cup-shaped piston at the lower end thereof which operates in the usual well known manner. A casing 31 is secured to the lower end of the cylinder 18 and is provided with a chamber 32 which receives the air compressed by the pump on its mounted in the head 16.

The passage of the air from the pump cylinder 18 to the chamber 32 takes place through a conduit 46 formed in a plug 41. The air passes from the cylinder 18 into the conduit 40 through i a port 42 which is controlled by a valve 43 spring pressed in an upward direction by a spring 44 mounted in the conduit or passage 40. The spring 44 seats at its lower end on a perforated disk 45.

, manner.

In order to manually operate the extinguisher the pump handle 21 is turned to a suflicient extent to release the piston rod and the pump handle is then reciprocated up and down in the usual manner and on its downward stroke will cause air to be forced through the chamber 32, conduit 33, port 35, and conduit or passage 36 into the receptacle.

In addition to the manually operable ejecting I means above described, the extinguisher is prositely extending resilient cartridge receiving portions 53 and 54. The cartridges 50 and.51 are of the usual construction and are sealed at their reduced ends 55 by diaphragms 56 in the usual The sealed ends of the cartridges are disposed at the inner portions of the clip and a disk 5'7 is fixedly secured at the central portion of the clip and is provided with oppositely projectingspikes or barbs 58 and 59 which are positioned in alinement with the diaphragms or sealed ends 55 of the cartridges.

The clips and cartridges are housed in a cas ing which extends downwardly from the head 16. The conduit 34 communicates with the casing' 65 through an opening or port 66.

barbs or spikes 58 and 59, thus releasing the compressed gas therefrom. The gas will pass from the casing 65 through the port 66, conduit 34, port 35 and passage or conduit 36 to the receptacle.

Means is also provided in conjunction with the bracket or supporting plate on which the extinguisher is mounted for automatically depressing the plunger '70 and releasing the compressed charge from the cartridges.

In the form of the invention shown in Figs. 1 and 2, the extinguisher is supported on a bracket '75 which is secured to and extends laterally from a supporting plate '76. The bracket '75 is adapted to extend through an opening '77 formed in the handle 21 of the pump. Thus,

tridges, the hammer is mounted on arms 81 and 82 formed on or secured to a spring 83 carried by a spindle 84 mounted in flanges 85 and 86 formed on the plate '76.

The hammer 80 is so proportioned and the arms 81 and 82 are so mounted that the hammer when released will strike the upper end or handle '72 of the plunger '70 and force the plunger downwardly. The hammer 80 is normally held in inoperative position by means of an arm 90 mounted on a pivot 91 and adapted to extend over the hammer in the manner shown in Fig. 1. The arm 90 is held against movement on its pivot by means of a fusible link which, in the I embodiment of the invention shown in Fig. 1, comprises three members 92, 93 and 94. The members 92 and'93 are connected bya fusible connection and the members 93 and 94 are connected by a fusible connection 96. The lower end of the fusible link has formed-therein a slot 9'7 adapted to receive the outer end of a fixed arm 98 carried by the plate '76. The composite link formed by the members 92, 93 and 94 is thus adapted to connect the pivoted arm 90 to the fixed arm 98 and in this manner hold the pivoted arm against movement upwardly on its pivot in a direction to release the hammer80.

In case of fire the fusible connection 96 will melt, thus releasing the arm 90 for movement on its pivot and in this manner releasing the hammer 80 which, under the action of thespring 83, will be swung about the pivot 84 and will strike the plunger '70, forcing the plunger inwardly and causing the cartridges to be punctured and the compressed gas charges therein to be released. 1

The fusible connection 95 between the members 92 and 93 is controlled by a winding 100 of high resistance wire. .One end 101 of the winding 100 is connected to one side of a power circuit. The'other end 102 is connected to a contact 103 of a thermostatically controlled detector'having an arm 104 of thermostatic metal adapted under the action of heat to engage a contact 105. A conduit 106 is connected to the contact and is also connected to analarm bell 107. The other contact of the bell 107 is connected to a conduit 108, which in turn is connected to the other side of the power circuit. In case of fire the thermostatic detector or switch arm 104 will close the circuit through the alarm bell and through the high resistanceheating coil 100, thus causing the fusible con-' nection 95 to melt. From the above description,

it will be seen that the hammer 80 may be released by the melting'ofthe fusible connection 95 or of the fusiblev connection '96. Whenthe composite link which holds the arm 90-g'ives Way, the hammer will be released, thereby, inthe manner above described, causing the compressed charges of gas to be released from the cartridges.

Inorder to prevent thepressure Within the receptacle caused by the release of the charge of gas in the cartridge from 1 bursting the receptacle, means is provided for insuring an air the valve 114.

' 5 inclusive.

space above the liquid. Thisis accomplished in the manner illustrated particularly in Fig. 5,

wherein there'is shown a "downwardly extending sleeve, formed on the head 16. The sleeve.

forms the filling opening for the receptacle-and since it extends downwardly into the receptacle an appreciable extent, it will be obvious that the'receptacle cannot'be filled above the levelof the lower end of the sleeve. I

The filling opening is closed by aiplug 11 1 which is threaded into the sleeve and has formed therein a chamber 1'12.,,,The upperend of the chamber 112 has a port 113 normallyclose'dby avalve 114 which. is pressed against theport by a spring 115 disposed in the chamber. 112..

The spring 115 seats at its lower end against a disk 116 having a'ncpening 117'therethrough.

The port 113 is formed in a nut 120 which is recessed, as shown at 121. A valve stem 122 is connected to the valve 114 and has a button 123 at the upper end thereof. When the liquid has been discharged from the extinguisher any remaining pressure can be released by depressing The liquid may be discharged from the ex tin'guisher in any suitable manner and in Fig. 3

there is shown a discharge hose 125 having a spray nozzle 126 on the end thereof. The liquid is conducted tothe hose 125 from the receptacle by means of a discharge pipe 127 which is carried by the head and extends downwardly'to a position adjacent the bottomithereof.

In the embodiment of the invention illustrated in Figs. 6 to 9 inclusive, the pump has the receptacle is provided with a hook 131 which.

is adapted to engage beneath a 'U-shaped bracket 132 carried by the back plate 76.

The back plate also has connected thereto a pair ,G b of spring clamping arms 133 and 134 adapted to embrace the receptacle.

A discharge pipe 135 is' carried by the head and extends downwardly to a position ad jacent the bottom of the receptacle. At its upper end the pipe communicates with a conduit 136 formed in the head and having a spherical discharge orifice 137. When the re-I ceptacle is mounted on the supportingplat'e 76, the discharge orifice .137 is disposed in engage ment with a spherical inlet end 138 of a conduit ing position on the discharge orifice by a spring 7 140 positioned in a housing 141 andengaging The end 138 of the conduit is held in seata collar 142 secured to the conduit.

The conduit 139 is connected'atits opposite end to the casing 143 of a spray noz'zle 144 "havin Fig. 9, is engineE.

ing a perforated sprinkler -head 145 thereon.

The perforated-sprinkler head 145 is normally protected-againstdust anddirt by means'of a cover 146 which is held in position by an arm 147 mounted on a pivot 148' forrnedcn "the casing 143. A spring.150=engages. the arm- 147. and tends to swing the-arm in'an anticlockwise direction, viewing Fig. 8, or in a direction to release thecoverI."146.-- A lug 151 is formed .on the arm 147 and is normally positioned above the outer peripheral portion of a flange 152 'formed' on the cover Thus, when the arm 147 is released and is swung by the spring on its 1 pivot, the lug 151 will positively eject the cover 146. from its operativeposition over the di's-" charge orspray'hea'd 145. The casing 143 may.

be mounted in any suitable position but is shown in-Figs. 3 and 9 as clamped to. the tie rod 155 which. connects the radiator 156.to the dash .ofan automobile- The casing; as shown positioned above the automobile The arm 147 isheld in position by means of a wire or rod 160. which is connected at its oppositeend to an arm 1611 mounted on a pivot 162' carried. by the plate 76 and having an angularly disposed portion 163 adapted to extend over .the hammer 80 and: to hold the hammer fromoperation. A fusible link 164.connects .the rod to the arm 147. I The extinguisher shown in Figs. 6 to 9 in-' elusive operates in, the following manner: In

case of; fire the extinguisher can be manually grasped and removed from its support by swinging the extinguisher outwardly about the U-shaped bracket 132 until the hook 131 on the extinguisher head is released therefrom. A blow on the plunger'70 will then cause the gas to be released from the cartridges and the liquid in the extinguisher will be ejected by gas pressure through the conduit 136.-

The extinguisher will furthermore be automatically operated in case of fire when the fusible link 164 gives way at a predetermined temperature, thus releasing thecover 146 from the discharge nozzle or sprinkler head and also releasing the hammer 80 whichwill thenengage the'plunger and cause the cartridges to be punctured and the gas to be released therefrom.

The gas pressure on the. liquid in the'extinguisher will then eject the liquid through the conduit 136," conduit From the foregoing description it will be evident that a simple, practical and efficient 139 and discharge head fire extinguishingdevice has been designed and that the extinguisher will operate effectively and can be operated "automatically or manually. M

With the form'of the 'inventionillustrated in Figs. 1 to 5, the fire extinguishing liquid can be ejected from the extinguisher by means of the pump, by a manual operation of the plunger causing the release of the gas from the cart-- 7,

ridges, orby the heat controlled automatic operation of' the plunger; Furthermore, in the" form-of the invention illustrated in Figs. 6. to 9 inclusive,. the extinguisher may be manually manipulated or will operate automatically'in case of fire to cause the fire extinguishing liquid to be discharged therefrom.

, Although certain specific embodiments. of the invention; have been particularly shown and 7 described, itwill be understood that the inventioniscapable of modification andthat changes in the vconstructionand in the arrangement of thevarious cooperatingparts may be made Without departing from the spiritv or scope of the said cage, and fixed meansintermediate the ends of the cage for puncturing said cartridges.

3. Ina fireuextinguisher, a filter unit come prising a cage having oppositely extending resilient' portions adapted to receive a. pair or oppositely disposed cartridges in .said cage, means intermediate the ends of the cage-for puncturing said cartridges, and means for forcing said cartridges into puncturing engagement with said puncturing means. i v

4. In a fire extinguisher, a filter unit com-- prising a cage having oppositely extending resilient portions adapted to receive a pair of oppositely disposed cartridges in means intermediate 'the ends of the cage for said cage,

puncturing said cartridges, and heat controlled means for forcing said cartridges into punctur ing engagement with said puncturing'means.

5. In combination, a fire extinguisher comprising a receptacle, a pump carried thereby, said pump including a piston anda piston rod therefor extending through the top of the receptacleand a handleon said rod, a support having a bracket engaging said handle, a casing in .said receptacle having a pressure cartridge therein, means including a plungervfor punc:

turing said cartridge, a spring actuated hammer mounted on said support and arranged to engage and actuate said plunger, and heat controlled means for holding said hammer j against actuation,

-6. In afire extinguisher, a receptacle, a casing therein, a compressed charge cartridge in the casing, a discharge port in the casing communi eating with the receptacle, an opening through the top of the casing for receiving the cartridge, a sealing member of ductile material over said opening, said seal being disposed above the discharge port, and a plunger over the seal for depressing but not breaking the seal and causing the cartridge to be punctured.

WILHELM B. BRONANDER.

Images