US1772425A - Fire extinguisher - Google Patents

Description

Aug. 5, 1930." M. LEBECQUE ET AL FIRE EXTINGUISHER Filed March 14, 29

10 ram, .71-

WITNESS f l atented "Aug. 1936 UNITED STATES,

P E T. lorries;

, mnunrcnrnnncoun nivnrnnnxmcnonnnrn, or TonorAmNnvAnn Finn EXTILTGUISHER' .A iplication filed March- 14, 1929. Serial no. 347,079.

Another object of the invention is to so construct a device of this character that a minimum amount ofcom'pres sedair is required to create the necessary pressure so that one .stroke will start the liquid flowing.

' Another object is to construct adevice of thischaracter sothat it is extremely simple and cheap .to manufacture'and yet has all of the advantages of the more expensive type. 15.,

is susceptible of a wide range of modification without departing from the spirit or sacrificing any'of' the advantages ofthe claimed invention; there being shown in the drawings 2, for illustrative purposes a preferred and practical form, in which:

Figure 1 is a side elevation of a fire distinguisher constructed in accordance with this invention;

gig. 2 is a vertical sectional view thereof; an

Fig. 3 is a top plan view. In the embodiment illustrated a container 1 is shown in the form of a cylinder preferably of metal of such character as to be unafiected by the extinguishing fluid to be contained therein. This vessel or can 1 which may be 'of desired size, preferably small enough to be easily supported by one hand of a person after it has been filled with the extinguishing fluid. As shown, the bottom of this can numbered 2 is spaced above its lower rolled edge 3 so that the latter forms a support for the can 1 when it is placed on a Q shelf or other surface without the bottom 2 contacting with said surface. This is for the purpose of mounting within said bottom 2a filling opening 4 closed by a removable screw plug 5 to provide for the filling of the can with the extinguishing fluid which may be of any desired character such as that ordinarily used in extinguishers of this kind. This can 1 has a. hollow extension 6 at one sideof its upper end the interior of which communicates with the interior of the body In carrying out these objects, the inventlon,

of the can and is designed to receivethe ex tinguishing fluid to a level about thatindi catedatainFig. 2. The spaceabove'this liquid level line a being intended as the p .56

pressure air space which is supplied by means of a pump 10 in a manner presently to he described. This can 1 and its extensionfi is closedair tight and a liquid discharge or out-] let pipe 7 is located atone side of the con tainerwhich registers with theextension 6i Thispipe 7 the'lower end of which is open; extends to a point near the bottom ofthe container as shown. clearly'in Fig. 2 and at the upper end thereof is provided'with a latfer ally extending nozzle 8' which j projects through one side wall of the hollow 'extension 6 and is surrounded by a gasket or washer 9' to form'an airtight connection'at this point;

This nozzle Sisdesignedfor spraying or. discharging the fluid from: the container,

which is accomplished by means of-air pressurein the air chamber of ihollow'extension' forces it up through-the pipe 7 and causes its discharge through the nozzle; 8 ina contiIi nous stream, v f f Projecting upwardly from the top of the container 1 at a point opposite the hollow extension is a handle 11 here; shown made of solid material although obviously it need not be so made. This'handle 11 projects preferably slightly abovethe top ofv the extension 6 and'has an opening 12 extend-ing transversely therethrough iwhich ,registers with a similar opening 13 formed-in the inner wall of theextensionfi, Theseopenings are designed to receive an air pump the discharge end of which opens into the air chamber in hollow extension 6 and is provided with a checkvalve 14: held normally seated by a coiled spring 15 The outer end i p or the pum barrel .10 is equipped with a removable'cap'16 through which slidably operates a plunger rod 17 the inner ;end of which carries a piston 18 mounted toreciprocate in the pump barrel and when moved forward willcompress 'the, air in said cylinder and force it out-intothe air chamber in hollow-extension -6 the air pressure operating of course to unseat the through the pipe 7 and discharge it through beingeasilyheld in'one hand and operated check valve 14 when this operation is being performed. The outer end of the plunger or piston rod 17 is provided with a thumb receiving member 19 against which pressure is designed to be brought to bear to force the plunger 18 forward to compress the air for operating the extinguisher.

A coiled sprin 20 encircles the piston rod 17 and bears at one end against the cap 16 and at its other end against the thumb engaging memberj19 and is designed to exert its tension to move the plunger outward on its return stroke when pressure is removed from said member 19.

In the use of this fire extinguisher the ban (He 11 is gripped by the fingers of the user and t'h'e thumb of said hand is engaged in the saddle-'l'ikef's eat 19 on the outer end of tho p'lunger'rod to forc'ethe plunger inward and assoonias'the, pressure is released the spring '20v'v'illreturn theiplunger, so that by conti'iiually pressing and releasing this device theipres'sure fluid within the air chamber of hollow extension 6 is so maintained that it will be'ar down on theliquid and force it out the nozzle 8 thus throwing a continuous stream of liquid "until the container is einp tied. The "air chamber of hollow extension 6 is pur ose-1y inadesrn'a'll so that very little air is required "tojcreate a sufficient pressure th'e'rein,"onestrokeof the pump being all that isne'c'e'ssary "to'start the liquid flowing.

It is of course [understood that the containerinaybje 'refilfledby removal of the plug 5 andthe inversion of thecontainer to permit'such filling, v

'Fro'in'the above description itwill be obvi'oiis that this fire extinguisher will be very lighthnd easily handled, being capable of b the thumb in the manner abovedescribed t us leaving the other hand of the operator free for anypurpose desired.

Without further description it is thought th'altftlie featii'res -and-advantages of the invention will be readily apparent to those skilled intheart, and it will,of course, be understood that changes-in the form, roportion and minor details of construction may "be resorted to, without departing from the spirit= ofthe invention or-its scope as claimed.

' We claim:

1. A fireextin'guisher comprisingfan extinguishing fluid reservoir, an extension 'chamber leading therefrom and communicating therewith, a discharge pipe located in saidfr eservoi'r and opening through one wall of said'extension chamber, said pipe being in ,coinmunication with the reservoir, an air pump mounted on said reservoir and discharging into said-extension above the liquid hand which supports the reservoir.

' operated.

the handle, and a discharge pipe leading from a point near the bottom of the reservoir and opening through one wall of said extension.

3. A fire extinguisher comprising an extinguishing fluid container having an extension at its'upper' end at 'one sidethere'of and] an upwardly extending hand grip at the otherside, an air'pump supporte' by said hand grip and discharging into said extencated adjacent said handle for 'o erati'c'ingby one of the fingers of the hand w 'ichj rasps" the handle, a'discha'rge pipe leading" ruin a point near' the bottom of the reservoir and sion, said pump having a cheokv'alve jin'its d scharge end, a plunger H1, said'pump ha vj mg a stem provlded with a finger grip 10- j opening throughone' 'Wall oii saidexten'sion,

and provided witha' disoharg'efnozzle, and means forautomaticailly r'e'turnin the pump plun ger to initial position after t hasbeen MAURICE "-nnnnooon. FRANK MQDONNELL.

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