US1281151A - Fire-extinguisher. - Google Patents

Description

UNITED srAtrEs PATENT oEErcE.

ERNEST EURST, or NEW YoEmN. it.l

FIRE-EXTINGUISHER.

Specification of Letters Patent,

Application med may 1c, 191s.v serial No. r4233,665,

' To all whom t may concern:

Beit known that I, ERNEST Funs'r," a

' citizen of the United States, and a resident of New York city, .in Vthe county of BronxV and State of New York, have invented cer' tain new and useful Improvements in Fireextinguisher embodying myinvention, and'4 'Fig 2,. a side elevation thereof.

The shell 1 of the extinguisher which is shown to be of conical form is provided at its base with a head 2, having a central aperture in which is seatedl a flanged collar 3. This collarreceives one end of a forarninated' cylinder f1 that projects a distance into shell 1., and is Iadapted to -inclose a glass bottle or other `brealnible or pierceablecontainer 5, the' end of which engages a buffer 6. Into the outer-"end oi cylinder 4, projects an exteriorlyaccessible 4plunger 7, that passes .through a cap 8, threaded on collar 3, and packed as at 9. Shell 1 is in practice, charged to 'a .certain height with one pfgthe *liquid constituents 'of the extinguish "zi-ligtluid, suchas a solution of bicarbonate soda, `'While the container 5 is charged withithe other constituent thereof, such as rsulfuric aci-d;` Into the liquid dips one end of `l-an outlet pipe, the other end of which leads lto a nozzle 11. In case of fire, the

device which is normally suspended i by means of'a ring or hanger 10, is grasped by a handle 10, and plunger 7 is forced in* ward, Vso as to break the\conta iner, and cause the contents thereof tocommmgle with 4the contents of the shell, the extinguishlng fluid thus formed being discharged through' the nozzle. In practice, only part of the.- shell 1 can be charged with theV liquid, 1n

order to leave a gas chamber, and thus there is formed withinV the shell, anuir space 12,l

During a` rise in temperature, the expansion of, the air Within this space would .be aptjo l`force the liquid up Within the-,outlet pipe f, ab "e Hieliqyud level, andout of' thenozzle, j

Patented Oct. 8, 1918.

so as to lform objectionable drippings, that settle on the surface of the shell. to4 overcome this objection, the following construction has been devised: The/outlet pipe 13 is normally submerged at4 its lower or receiving end Withinthe liquid, and is here provided with a screen 14, yThe upper or delivery end of the pipe opens into the bulged bottom 15 of an elongated chamber' 16, housed Within shell 1 and resting preferably against the wall thereof. At the 'mouth of pipe 13, bottom 15 constitutes, orV

loating action of the liquid, but that it will. vbecome readlly unseated by the, relatively great pressure generated by the commin-i' gling of the chemicals.

Into the bulged head 18 of chamber 16,

projects a second outlet pipe 19, which is preferably o f smaller diameter than pipe 13 and connects directly with nozzle 11. T his` pipe extends a considerable distance into the upper portion of chamber 16, as at 20 and is here apertured and 'provided with n screened bottom 21.

Under ordinary or rising temperatures, valve 17 will remain seated to cut oil communication between pipe 13 and chamber 16 and consequently bet-Ween the contents of shell 1V and nozzle 11, thus preventing drippings. `When, however, the extinguishing Huid' is generated, the valve will be lifted and be forced against head 18, sidewise of projection 20, so that the apertures in the latter remain unobstructed, and the fluid is free to pass through chamber 16 and pipe 19 out 4of nozzle 11, the'valve being of cou-rse, also unseated when the device is tilted out of its upright position during use.

In lieu of employing a fragile container I may use a cartridge containing a gas, filled under pressure, and which upon the puncturi ing'of the container, is discharged into the liquid, so as to form the extinguishing fluid.,

For charging, theldevice yis reversed and ycharge-introdi'iced, it would run' out through j nozzle 4(the ball valve 17 being unseated 'After the 'charge has been introduced, the

i'eifie Vis agreed, whereby the tardive-bei In .order i.

`the solution is kpoured in only to a level l com es reseated. As during charging,"no liquid can flow into pipe 13, it, can also not HOW linto chamber 16 -Which .thus remains empty even after the shell has been righted.

Y However, this is not a necessary '.feature, but

. it is'desirab'le for thereason that spilling .through the nozzle during transportation or when the device is installed on a ship or train is checked.

. -I claim:

` 1. A ire extinguisher comprising a shell adapted -to receivea liquid constituent of an extinguishing fluid, a container adapted to receive a second ,constituent thereof, a ,dis-i' charge pipe that dips into said liquid constituent, and a valve -controlling said pipe, said valve being adapted to remain seated under temperature fluctuations, but to become unseated by the pressure of the extinguishing fluid when generated. u

2. A firev extinguisher comprising a shell I adapted to receivea liquid constituent of an 'extinguishing fluid, an inclosed container adapted to receive a second constituent therevchamber, and a Valve confined witixm adapted to receive a second constituent there of, a pair of discharge pipes, a chamber 'iw' terme-diete said pipes, one of said pipes being adapted to dip into said li uid con While the second pipe extexn s a lista said Chamber and is perforated 'mi chamber and adapted to remain seated n.: temperature -fluctu'ations` but to becorn,`l a seated by the pressure of the extinguis fluid when generated.

ERNEST FURS'T.

adapted to receive a-liquid constituent ci an. extinguishing fluid, an inclosed container

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