US2731092A - Extinguisher - Google Patents

Description

Jan. 17, 1956 G. BEAUMONT 2,731,092

EXTINGUISHER Filed June 7, 1954 2 SheetsSheet l FIG.1 FIG.2

1956 G. BEAUMONT 2,731,092

EXTINGUISI-IER Filed June 7, 1954 2 Sheets-Sheet 2 ne t).

a 2,731,092 1C Patented Jan. 17, 1956 EXTINGUISHER Georges Beaumont, Paris, France Application June 7, 1954, Serial No. 434,998

Claims priority, application France June 5, 1953 4 Claims. (Cl. 169--31) This invention relates to extinguishers.

It is known that there are three principal types of fires, dry fires (wood, paper, fabrics, fodder etc.) hydrocarbon fires and fires of an electrical origin, each of these types of fires requiring a different product for its extinction. Since these products have different viscosity, it has been necessary up to the present time to provide a separate extinguisher for each product.

Furthermore, several types of extinguishers are at present in use, for example pump-type extinguishers and those dependent upon chemical reaction, physical reaction, constant pressure or auxiliary pressure. Some of these extinguishers are set in operation by being turned upside down, while others, on the contrary, must not be turned upside down. Some must be struck with the hand; others have to be struck against the ground. Some are equipped with a pump, others with a cock, others with a trigger etc.

This variety of extinguishers required for fighting the diiferent types of fire complicates the operators task, and in many cases fires which have started cannot be brought under control owing to wrong handling of the extinguisher resulting from confusion.

One object of the present invention is to provide an improved extinguisher capable of being used with different extinguishing products to permit extinction of all fires, thus overcoming the above disadvantage and in addition facilitating mass production and making it possible for manufacturers and retailers to carry reduced stocks.

According to the present invention there is provided an extinguisher comprising a sealing member disposed adjacent the outlet nozzle for the extinguishing product said sealing member preferably being constituted by a valve whose seating is formed by the nozzle.

This arrangement dispenses with any throttling or loss of head at the outlet for the extinguishing product; the extinguisher may be used with equal advantage with a liquid product as with a product in powder form. Moreover, the permanent sealing prevents powders from becoming moist and liquids from evaporating.

In a preferred form of embodiment of the invention the head of the extinguisher has a dish-shaped portion and the discharge passage for the extinguishing product is directed at an inclination from this dish-shaped portion to the nozzle, said discharge passage preferably being connected tangentially to the said dish-shaped portion. This provides an easy flow for certain extinguishing products of low inertia, for example, powder.

One embodiment of extinguisher according to the present invention is described hereinafter, by way of example, with reference to the accompanying drawings, wherein:

Fig. 1 is an elevational view, partly in section, of the extinguisher ready for use;

Fig. 2 is a view similar to Fig. 1 showing the extinguisher in the operating position;

Fig. 3 is a vertical sectional view of the head extinguisher;

Fig. 4 is an underneath view of the head, and

Fig. 5 is a section showing a detail of the head.

As shown in the drawing, the extinguisher comprises a container 1 provided with a carrying handle 2 and on the upper part of the said container a cap 3 is fixed by-means of nuts 5 screwed onto bolts (not seen) which extend through holes 4 formed for this purpose in'the cap.

The cap 3 comprises a bore 6 in one extremity of which is screwed the threaded portion 7a of an outlet nozzle 7. Slidably mounted in the bore 6 is a rod 8 secured to a-piston 9 and extending through the end of the bore, a control handle 10 being fixed to the outer extremity of the said rod by a pin 11. A spring 12 disposed in the bore 6 urges a plastic packing element 13, set in the piston 9, against a shoulder 7b of the nozzle, which shoulder forms the valve seating.

The lower portion 14 of the cap 3 is dish-shaped and a discharge passage 15 for the extinguishing product is directed at an inclination from the said dish-shaped portion 14 to the nozzle 7. This passage 15 is connected tangentially to the dish-shaped portion 14.

The cap 3 also carries a support 16 for a sparklet 17, the support 16 being provided with an orifice 18 for the passage of the gas to the interior of the container 1. A striker 19 extends into the sparklet support 16.

The references 20 and 21 designate respectively an abutment disc for the spring 12 and a packing ring providing a seal between the rod 8 and the cap 3.

The cap is assembled in ancxtrernely simple manner. The rod of the piston 8, on which there have been previously arranged the spring 12, the disc 20 and the packing ring 21, is introduced by Way of the opening in which the nozzle 7 will be mounted; the nozzle 7 is then screwed onto the cap 3. Screwing the nozzle 7 tightly in position slightly compresses the spring 12 and forces the plastic packing element 13 against the shoulder 7b of the nozzle 7. The apparatus is thus perfectly sealed.

After filling the apparatus, and screwing the sparklet onto the support 16, the cap 3 is mounted on the body 1, and the nuts 5 are tightened. The apparatus is ready for use (Fig. 1).

In order to operate it, the apparatus is turned over as shown in Fig. 2 the striker 19 is struck against the ground so as to perforate the seal of the sparklet 17. The gas under pressure contained in the sparklet is liberated and passes into the interior of the container via the orifice 18 of the support 16. The extinguishing product contained in the apparatus is then under pressure.

By means of the hand holding the carrying handle 2, the handle 10 may be operated as desired in order to open or close the orifice of thenozzle 7.

The extinguishing product then passes very easily, substantially without any loss of pressure, from the container 1 to the nozzle 7 and the extinguisher has therefore a remarkable jet range and power. The same apparatus may be used with different extinguishing products; the nozzle 7 merely has to be changed where necessary.

It is obvious that the invention should not be considered as limited to the form of embodiment described and illustrated, and that modifications may be made thereto.

What I claim is: I

1. In a fire extinguisher, a container for a fluent extinguishing product, said container having an end Wall with a dome-shaped inner surface, an outlet nozzle positioned in said end wall, a discharge passageway connecting said nozzle with the interior of said container, said passageway comprising a channel tangential to said domeshaped inner surface and sloping to said nozzle, and valve means for closing said nozzle, said valve means being releasable to permit free flow of said extinguishing product from the interior of said container to said nozzle without abrupt change of direction.

2. In a fire extinguisher usable alternatively with liquid and powdered extinguishing material, a substantially cylindrical container closed at both ends, one end of said container being closed by an end wall having a dome-shaped inner surface, a discharge nozzle positioned in said end wall and extending transversely with respect to the longitudinal axis of said container, a passageway leading from the interior of said container to said nozzle and comprising a channel which is substantially tangential to said dome-shaped surface and slopes outwardly to the inner end of said nozzle to provide free flow of material to said nozzle without abrupt change of direction and valve means for closing said nozzle.

3. A fire extinguisher according to claim 2, in which said valve means comprises a valve disc engageable with ,4 the inner end of the nozzle to close the nozzle and means for moving said valve disc away from the inner end of said nozzle to provide free flow of material to the nozzle.

4. A fire extinguisher according to claim 3 in which said valve means comprises a valve item extending transversely of said container and through the wall thereof, a valve disc carried by said item in position to engage the inner end of said nozzle, resilient means for pressing said disc against the inner end of the nozzle to close said nozzle and a handle on a portion of said item outside the container for moving said item to move said disc away from said nozzle and thereby provide free flow of material to the nozzle.

References fitted in the file of this patent UNITED STATES PATENTS

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