US1469501A - Fire extinguisher - Google Patents

Description

E. N. DOLLIN FIRE EXTINGUISHEE Filed April .21, 1920 AYTWBIIFEJ" Patented Get. 2, 19235.

EQNWEQDE stares ime 1 teaser? EDGAR. n. DOLLIN, or SYRACUSE, NEW Yomnf FIRE nx'rrlve'urs inn.

" Application filed April 21, 1920. ser al No. 375,540.

To all whom it may concern:

Be it known that E'oAn N. 'DoLLrN, of Syracuse, in the county of Onond'agagin the Stateof New York, have invented new and useful Improvements in Fire 'Extin guishersfof which the following, taken connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to certain improveme'nt's'in hand fire extinguishers involving the use of a bottle or analogous container for the fire extinguishing fluid, such as car- 7 -bon tetra-chloride, anda secondary collapsible and expansible container for normally separated gas producing elements, which, when liberated in the presence ofeacli other,

causes theinfl'ation of the secondary container to such an extent as to displace practically the entire contents'ofthe first named container through the discharge opening thereof. j t

The main object is to provide a simple, economical and highlycfiicient hand fire extinguisher by which a continuous'stream of the fire extinguishing liquid may be projected from the container by the automatic inflation of an expansible sack or container through the combining of normally separated gas producing elements confined therein,

but liberatedin the presence of each otherv by-the voluntary act of the op'erator,-thereby' avoiding the use of pumps and analogous devices which produce intermittent or pulsating streams.

f Another object is to provide means' vvhereby practically" all of the fire extinguishing fluid maybe gradually expelled by the inflation of the sack'without-liability of closing the outlet or'cutting off communication between different parts ofthe container.

' A further object'is to make the sack, and

' also the confining mediums for the gas prolongitudinal vertical secthe variousfeatures of my invention, a portion of the inflatable sack being broken away to show the confining media forthe, gas pro ducing elements. 5

Figure is a transverse sectional view taken in the plane of line; 2- 2, Figure Figure --3- is an elevation of vthe detached inflatable sackI-shovvingthe portion thereof surrounding the stopper "in section.

Figure is an elevation of the-detached confining mediator the gasl producing.elements,"broken or mutilated to liberate .7

I said elementscinithe presence'o f each other within the sack. -.-.1 i 1 1; I Asillustrated, this-fireextinguisher comprises a container'-1 for the fire extinguishing fluid, as '2',- ajsecondary ex- 1 pansible and contractile container 7 -W1tllIlI1 the container -1- and one or-niore -'(in this instance 2) confining media for gas producingelements, which, together with a quantity-of liquid,fas water,

are confined within the secondary container The container -1 is preferably theiform of a bottlelof glass or other compartively inexpensive material which. is imperviousto the fire extingnishingliquidcontained th'e'reimand is. provided at one end with aninlet opening 6- for filling purposes, and at its opposite endwith a. relaspondingly smallj-outlet fii for the discharge of the fire extinguishing liquid there- N I through. i

" The inletopeningF fl t-gis norniallyiolosed by. astopper of cork orv other suitable 'material, which is held in place -by,a:cap

'10 having 1 its edges; 11-,- acrimped rounding thermouth of the bottle. I

. The; outlet -8,- is also normally; closed by a'stopper 13 -E-' 'OC;E' cork lor other suitable material, and held :in place -by a similar, but smaller cap f-\ mP around i a suitablebead on the? end of the nozzle -7. A wireorsimilar rod is passed centrally through-the stopper- 8 and has its, inner end provided vwith a. shoulder ;,17 -f engaging the adjacent end of *said stopper, while its; outer'end; is ;pro

vided' with afring l8 .f the loottle may be suspended i-n-a vertical position upon axnailor equivalent support when not in use. The. cap, mad jo fa relatively around and under ahead, as 12l- -surlight andeasily bendable material eitherof extreme thin metal or heavypaper, which will permit the withdrawal of the stopper and cap-by an outward pull uponthe ring ;18--, but is of suiiicient strength to support the bottle when suspended by said ring.

' The cap 10. covering the larger opening -6- is made of heavier material, such as sheet metal, and is of suficient strength toresist-the pressure of thegases within the sack acting upon the cork--9 when the gas producing elements are liberated by the disintegration of the confining media --4 as hereinafter more fully described.

One end of the sack 7 ing 6''jaround the cork or stopper 9- and is preferably overturned on the'outer end of the mouth o fjthe bottleto be engaged and heldinplace by thecap -10and cork 9-'-, both of which constitute a support for suspending-the sack within the=bottle and effectively closes the open end of the sack, thereby affording an inexpensiveand convenientmeans for holding the sackwithin the bottle. 7 v

This sack -is preferably made oftoug'h, but highly flexible paper, treated with shellac or other suitable material-to renderit impervious to its contents or to the sur- "rounding fire extinguishing fluid, and is normally compressible by folding. or twisting to a size or diameter 'sufiiciently small to enable it to be inserted through the opening --6-jinto the bottle, where it is. suspended by the cork 9.- and cap 10, its surface area 'whenjdistended or inflated being equal to and preferably greater than that of the interior'of the bottle to enable all portions thereofto contact with'all portions of the walls of saidbottlein order to assure the expulsion of all of the fire extinguishing fluid Whenthe'sack is'inflated. 7

T-he confining media for the gas. producing elements preferably consist of relatively small tubes "of 'thin but tough paper or equivalent inexpensi'ye material coated with 7': Ishellac or similar substance torender them impervious to the surrounding body.-5

of'wate'r, and are closed at both ends, said tubes being separate and adapted toconfine therein-suitable quantities of gas producing elements, such as sodium-carbonate in one'tube'and tartaric acidinthe other tube, 'whichelements, when liberated in the presence of each other and in the body of water -=a-,produ'ce ahighly expansible gas whichwill immediately inflate "the sack 3-- against all portions of-the -walls of i the bottle 3-1 for expe'llingthefire extin- J guishing' fluid through the discharge nozzle ''7-' when'the stopper -8-'+ is removed.

flt'is, of-course, necessary' to break or dis integrate the tubes and, forthis 'purpose; relatively-small wires 19- are 7 3- is open and preferably extends through the inlet open- .liquid through" the nozzle passed centrally through thetubes and provided at one end with sheet metalc'utters is taken in. one hand-and the wires -..19-'

.re 'pulled'out endwisethrough the opening +21 by means of the ring -22- thereby bringing the ends of the/tubes against a metal -abutment -i-'23'- onthe inner face of the 'corlnjand by a -continued pull'upon the wires, causes thecentral por-y f tions of the tubes to. burst under the pressure produced by the engagement of the cutter.

--20- against the: inner ends of the tubes,

or the cutters may be drawn through, the

tubes to cut or tear the samesufiiciently to liberate the contents of said tubes. Elther just preceding or immediately following the disintegration of the-tubes, the.

cork -8 is withdrawn to allow the. exit of the fire extinguishing fluid through the nozzle 7- which may be directed upon the fire to be extinguished, it being understood that as soon as the gas producing elements are liberated in'the presenceof each-other,

the sack -3-. is immediately expanded against thewalls of the bottle, thereby caus- .ing the expulsion of the fire extinguishing -'7. in acontinuous stream.

. In order to maintain asufiicient opening or Y openings between the sides of the sack and walls of .the' container ,1- when thesack is inflated, suitable coils 24- of wire or equivalent material are attached by any suit:

able fastening means: to; one or more; sides of the sack to prevent the adjacent portions of the sack from contact with said walls,

thereby establishing passages from end to end of the bottle through which-the liquid 7 may be discharged even though all other'portions ofthe sack maybe engaged with said Walls.

It is evident, making the sack and tubes 4 of paper, they may be made of comparatively inexpensive cloth, such as cottontreated insuch manner asfto render it'impervious to.

the liquids which may contact therewith,

however, that instead of 7 and, therefore, I do not wish to limit myself f to the useof any particular material, .nor

to the exact structural details asshown and gasaproducing element or elementsgeither physically or chemically combined. j:

-' 'WhatIclaim is: g

.1. -A fire extinguisher comprising a bottle described," nor to thefuse of any particular having an inlet in one end and an outlet in lts opposite end and containlng'a fire extinguishing fluid, stoppers for the inlet and in any position without liberating any of the gas-producing elements, and means, operable at will, for disintegrating the cartridge to release its contents in thepresenceof the other gas-producing element in the bag for generating gas in said bag and therebyexpandin the same to expel the fire extinguishing fluid from the bottle when the stopper in the outlet is open, and means for holding portions of the bagout ofcontact with the walls of the bottle when the bag is expanded to maintain a passageway for the liquid from all portions of the bottle to the outlet. 1

2. A fire extinguisher comprising a container for a fire extinguishing fluid having an inlet and an outlet, stoppers for said inlet 7 and outlet, a non-elastic inflatable bag within said container and containing a gas pro ducing element, means for confining additional gas producing media Within the bag separate from the contents thereof in all positions of adjustment or the fire extinguisher, and means, operable at will, for libconfiningmeans 1n the presence" of the gas erating said gas producing media from its" producing element in-tlie bag for generating 7 gas Within and expanding said bag to expel the fire extinguishing fluid from the container When the outlet is opened,* and means for holding portions of the bag out of contact with the walls of the bottle when the bag isinfiated to maintain apassageway for the liquid fr'omall portions of the bottle to the outletf 3. A the extinguisher comprising nonoomrnunicatin chambers one within the other, one of ale chambers contaimng a fire extinguishing fluid, and provided With an outlet, the other chamber having normally contracted expan'sible Walls, means under the control of the operator for causing the expansion of said walls to expel the fluid from the first named-chamber through its outlet, and means for holding portions of the expansible walls in spaced relationto adjacent portions of the Walls of the other chamber when said expansible Walls are distended.

In .witness'whereof I have hereunto set my hand this 16thday of April, 1920.

EDGAR N. noLLrN.

Witnessesz H. E. CHAsE, V E. FRADENBURGH.

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