US1335394A

US1335394A - Fire-extinguisher

Info

Publication number: US1335394A
Application number: US817772A
Authority: US
Inventors: Rustige Frans Johan Henrik
Original assignee: Individual
Current assignee: Individual
Priority date: 1914-02-10
Filing date: 1914-02-10
Publication date: 1920-03-30
Anticipated expiration: 1937-03-30

Description

F. J. H. RUSTIGE.

FIRE EXTINGUISHER.

y, APPLICATION FILED FEB. Io, 1914.

Patented Mar. 30, 1920.

I M ,IDVQ

ATTORNEY FRANS JOHAN HENRIK RUSTIGE, 0F STOCKHOLM, SWEDEN.

FIRE-EXTINGUISHER.

Specification of Letters Patent, Patented 3131-. 30, 192()n Application led February 10, 1914. Serial No. 817,772.

beforey flowing out into the room or chamber where its extinguishing action shall be performed. It has been found, however, in experiments with such apparatus, that the large absorption of heat which always accompanies the vaporization often cools the carbonio acid itself and surrounding con-` duits suiiiciently to cause the latter, which are generally rather narrow, to be obstructed by solid carbonio acid whereby kthe action of the apparatus is interrupted.

According to the present invention, therefore, the carbonio acid isv led in a liquid state from the receptacle or receptacles all throughthe pipe conduits or system to the mouths thereof so as to iiow out into the rooml or chamber surrounding the fire in a liquid state and be vaporized in said room or chamber. l

The invention also comprises an arrangement for making this manner of operation possible, said arrangement consisting in that the outlet pipe from the receptacle or re- Ceptacles for the carbonio acid leads from their bottom or the neighborhood thereof, and that the continuation of said pipe extends practically continuously unto the mouths of the pipe system without any vaporizing device being inserted anywhere therein. Such a vaporizing device could for instance consist of a place where the pressure in the conduit would sink below a certain limit. For preventing such sinking there should not be any changes in the cross sectional area'of the conduit which exceed a predetermined limit. Finally the invention comprises automatic controlling means for enabling the entire pipe conduit or connecting system for leading the carbonio acid to the place of its action to be normally kept only under a small pressure determined by a reducing valve, while said conduit, when the apparatus is put into action, is brought into direct communication with the carbonic acid-receptacle where of course -avconsiderably higher pressure prevails. Thevaction of this device is based upon the circumstance that the pressure in the conduit between the reducing valve and the outlet, whichjnormally is kept at a oertain value determined by said valve, instantaneously sinks, when the.y apparatus is put into action, on account of the comparatively low pressure due to the action of the reducing valve, until near the atmospheric* pressure, which decrease Aof pressure can be utilized for releasing a controlling device.

A form of the invention is illustrated in the accompanying drawing, in which,

Figure 1 is a side view, partly in section and showing the piping system broken away;

Fig. 2 is an end view of themechanism foncontrolling the device;

Y Fig. 3 fis a detail, sectional View taken approximately on the line 3 3 of Fig. 1; an

Fig. 4 is alongitudinal section through the controlling valve and the mechanism for operating the same, said mechanism being shown partly broken away.

The receptacle 1 for carbonio acid is provided with an outlet pipe .2 reaching to, or nearly to, its bottom and connected by means of a main valve 3 to a branch piece 4C. From the latter, a conduit goes to the high pressure side of a reduction valve 5, the low pressure side of which is in connection with the fire extinguishing pipe system 6 with the sprinklers 7 through a non-return or check valve 8, and also preferably with a manometer 9 "the direction of flow through the valve 8 being indicated by the larrow in Fig. 1. The valves 3, 5 and 8 may be of any well-known form suitable for the purpose, a conventional showing thereof being deemed sufficient herein. Another conduit from the branch pipe l is by a valve 10 directly connected to the pipe system.

The valve 10 is normally closed, but suitable mechanism is provided for opening such valve automatically whenever the pressure in the4 pipe system is suiiiciently. reduced. In the present. instance, the stem of the valve l,10,is shown swiveled in what may be'termed an auxiliary stem 16,.which is provided with a head portion exteriorly threaded and adapted to coperate with the' interior threads of a housing member 17 .secured to the casing of the valve 10. The

l rear' portion of the member 16 is" preferably squared'anl adapted to slide in a similarl formed longitudinalp ening in a stub sha t 15, which 1s mounte for rotation in the end walls of a cylindrical housing 1.8,.w1thin which is carried a` band spring 11, one

end of the spring being secured to the", side wall of the housing 18 While the opposite end of the spring is secured to the-gs'tub' shaft or pintle 15 by means of a pinpasu's-uing through a transverse opening. irrsaldl shaft 15, said opening being so formed'f'that when the spring is released it is permitted?, to run idle for a short distance "andfthus, acquire a certain amount of speed, orfpmo mentum before it rotates the stub shaft' 15,.

.the formation of this transverse opening being clearly illustrated in Fig. l3. ,Theextreme rear end of the shaft 15 is preferably squared and is provided outside of the' spring housing with a ratchet disk adapted to coperate with a latch 12 pivoted on the housing for retaining this spring wound. Above the spring housing 18 1s mounted a second housing 20, which-is .in` two parts having clamped between them-aflexible diaphragm 13, centrally of which. is secured a pin 13 which projects through ,y an opening in the rear end of the casing sai latch is retained in position to lock th-effH Around the` pin 13, between the diaphragm 13a and the. end of the housing 20 is placed a coil spring' 21 adapted to exert pressure on `the r`dia-f,` phragm to normally withdraw the p.in ;.1"3 4out of the path of the latch 12.V The"hou-s"-V ing 20, at the opposite side ofthe diaphragm is 1n communication, by means of a yconduitl or pipe 14, with the low pressure-side ofthe v y y adapted toperinit'lt-h'e carb'onic acid to esinto the path of the latch 12, whereby ratchet disk against rotation.

pressure reducing valve. 'v A The operation of the apparat-us islas fol-xv lows: Normally the valve'jis open', andthe valve 10 closed, as stated. In the pipe sys-A tem there prevails a pressuredetermined by the reducing valve, for instance l1.5 atmospheres above atmospheric pressure which can be read on the manometer i). one of the sprinklers 7 is opened by `a fire in its neighborhood` the gaseous carbonio acid present in the pipe system will readily 'y escape through the wide opening of the;l sprinkler, while the reducing valve which.. has a narrow passage cannot supply fresh carbonic acid with the-'same speed, inspite of the highlpressure on its high pressure..

If then l teiniandgout through the open sprinkler valve. The carbonioI acid then escapes in a liquid state because it passes from the bot- These thereacid. The action also will be very elicient on-ja'ccount of the large quantity escaping per unit of time, and the Aabsorption of heat takes4 place in the room" surrounding the -re,fso that the temperature therein is materially lowered, which circumstance assists in choking the fire. As soon as the valvel l-Ouis" opened, the non-return valve 8 closes automatically ands-protects the more delicate partsofthe apparatus, viz. the manometer 9 and the low pressure members of the reductionv valve 5 from injury by the high ples'sure'of-the escaping liquid.

, The' device for openingthe valve 10 under the vinfluence of the sinking of pressure A-in the sprinkler conduit or pipe system 6 -from near the bottom of the receptacle and adapted to permit t-he carbonio acid to e:- cape therethrough, and a pipe system leadiiigtlierefromgsaid pipe system having substantiallyfuniform passage dimension.

{2.-In a fire extinguishing apparatus, a receptacle'ffor containingcarbonicacid in the -liquid.. istnite, anl outlet pipe. leading' thorefromfnearthe bottom of the receptacle and cape,therethrough,` a p ipej'system'` leading therefrom, said pipe"'syi-item having-1v substantially uniform passage dimension and dischargeoutlets, and means normally preventing the discharge ofthe liquid. l

3. In'a fire extinguishing apparatus, a receptacl'eforliquid carbonio acid,l a system. of pipes provided with discharge openings permanently connected to the said receptacle at la point-adjacent to the bottom of the same, a ressure reducing vvalve provided "in this pipe connection. adirect communication between said systemofpipes and said receptacle, 4and a valve normally closing the said directcommunication and being capable of being operated by changes in the pressure on the low pressure side of the reducing valve. -f

4. A fire extinguishing apparatus, comprising a receptacle `for carbonio acid, an outlet vpipe leading therefronrnear its bottom, a pipe system of substantially uniform carrying capacity and lia-ving discharge sprinklers, a reduction valve situated in said sysstate without vapor-izing before itsA discharge. v 1- 5. A fire extinguishing apparatus, "comprising a container for carbonio; acid in a liquid state, a valve controlled outlet therefor, a pipe system leading therefrom,a reduction valve in said pipe system to permit the escape of liquid under reducedv pressure, a Valve controlled connection-between said valved outlet and the pipe .system beyond said reduction valve, and meansassociated with the pipe system beyond the i'eduction valveto operate the second named valve vto permit the discharge of -said liquid under high pressure independent of the duction valve.

6. A fire extinguisherincluding a receptacleadapted to contain carbonio acid in a liquid state, an outlet therefor leading from the bottom thereof, an extinguishing conduit in communication with said outlet, lire.

extinguishers carried thereby, a reduction valve in said conduit to 'permit the discharge of vthe liquid underl lovs7 pressure, means for determining said low lpressure discharge, meansjin said' conduit for preventing back pressure on said last-mentioned means and the reductionvalve, 'and means,y

associated with the conduit for discharging the liquid under high` pressure independent` of the reduction valve,s'aid liquid under: high pressure being prevented'-from vesclPv ing to the low pressure determining means' and reducing valve.l

7 In a re extinguishing apparatus, a receptacle for liquid carbonio acid, a lsystem of pipes, provided with discharge openings permanently connected to the'said receptacle at a point adjacent to the bottom of the same, a pressure reducing valve provided in this pipe connection, a direct communication between said system of pipes and .said receptacle, a valve normally clo'sing the said direct communication, said valve having a spring tending to open it, a latch normally locking said spring, and a diaphragm in direct communication With the loW pressure side of the reducing valve and acting to release said latch. l f

8. A fire extinguisher includingl a container for liquid carbonio acid, an extinguishing conduit having valved connection-With said container and provided with discharge openings, means to normally prevent the escape of liquid therefrom but sure, and means operable by "the change of pressure on the'loiv side ofA said last-mentioned Vmeans when said liirst-mentio'ned means are opened to operate the ,valve of the extinguishing conduit for permitting the direct discharge, of liquid therethrough .under high pressure. Y

9. A fire vextinguishing apparatus com-v "p'rising a',receptacleadapted to contain an vextinguishing fluid such asv carbonio acid and having an outlet, a pipe systemconnected with kthe outlet and provided with Vsprinklers"adapted-to open under the action of heat-,a reducing valve in said pipe system to permit the discharge of the liquid A'underpreduced pressure, ka connection betweenthe outlet at the highpressure side of the valve and said pipe system at the loW pressure side of said valve, a valve controlling the escape of the iuid through saidconnection direct to the sprinkler, spring means normally tending to open said valve, means` :acting against said spring to hold said valve closed and pressure operated means connected With the pipe system at the low pressure side of the reducing valve to release said holding means'upon the reduction of the pressure by the opening of the sprinklers to permit the direct discharge of the liquid'in an unvaporized state.

f1.0. A lire extinguishing apparatus, comprisingva receptacle adapted to contain an extinguishing fluid such as carbonio acid,

.an outlet therefor, a 'pipe system provided with sprinklers vadapted to open under the ,action ofheat, a reducing valve in said pipe .system to Jpermit the discharge of the liquid under reduced pressure, a connection becontrolling the escape of the fluid through said connection direct to the Sprinklers, spring means normally tending to open said valve, means acting against said spring to holdsaid valve closed, said means-including ilo a diaphragm havingl pipe connection with' said pipe system at the low pressure side thereof, and means in the pipe system to prevent back pressure against the reducing valve by the escaping high pressure liquid.

11. In fireextinguishing apparatus, a receptacle for liquid carbonio acid, a system of pipes vprovided---,With discharge openings permanently connected to the-said receptacle at apoint'adjacent vto the bottom of the 12o same, a pressure reducing valve provided in this pipe connection, a direct communication between said system of pipes and said receptacle, a valve normally closing the said direct communication, said valve having a spring tending to open it and a coupling connecting it to the valve and having some play, and means operated by the pressure on the low pressure side of the reducing valve and acting to release said spring.

permanently connected to the said receptacleat a point adjacent to the bottom of the same, apressure reducing valve provided in v this pipe connection, a direct communication between said systemof pipes and said receptaclea valve normally7 closing the said direct communication, sald valve having a spring tending to open it, a latch normally locking said spring, mea-ns operated by the pressure on the low pressure side of the reducing valve and acting to release said spring, and a non-return valve inserted be- 15 l tween said low pressure side and the discharge pipe system so as to open only in the direction toward the latter.

In testimony whereof I have signed my name to this specification in the presence 20 of two subscribing Witnesses.

FRANS JOHAN-Humm RUSTIGE.

Witnesses BIRGER NoRDFELDfr, y A. SIMON.