US2057840A - Fire extinguisher - Google Patents

Description

Oct. 1936. J. NEUMANN 2,057,840

FIRE EXTINGUISHER Filed Jan. 3, 1935 In vemor: Jase! Aama v Patented Oct. 20, 1936 PATENT OFFICE FIRE EXTINGUIS 4 Josef Neumann, Brunn, Czechoslovakia Application January 3, 1935, Serial No. 204 In Czechoslovakia January 24, 1934 2 Claims. (Cl. 189-28) This invention relates to an apparatus for extinguishing fire, in which a vat filled with a quenching fluid is discharged by the combustion of a readily ignitible member. The said inven- 5 tion consists in that a vessel is located within the said vat, which vessel is filled with gunpowder or the like, on the inflammation of which a considerable pressure above atmospheric is produced and the quenching fluid driven out with great 10 strength. The said device is intended, in particular, for the quenching of fires caught by a carburettor of an automobile.

' It is known to provide automatically acting quenching devices in which shot-firing cables are 15 used, so that it will take much time until the shot flring cable ignited by the flre actuates the device.

Furthermore, automatically acting quenching apparatus provided with mechanical devices such as, for example, springs under tension which will be released'by the burning-through of a cord,

, have been employed. In such apparatus either a cartridge which slowly forces the quenching fluid from the apparatus is operated, or a glass 25 vessel is broken from which the quenching fluid is free to flow out. Also these apparatus take relatively long time until the quenching fluid acts, and, therefore, cannot prevent a partial combustion of the endangered devices.

30 Moreover, these known devices present the disadvantage that a metallic mechanical device will, through the action of damp air or gases, undergo certain alterations on its surface, whereby their release will become unreliable. Also the constant 35 shocks that occur in automobiles will act unfavorably on the said quenching devices, the cords retaining the springs under tension getting worn out whereby the device is uselessly actuated. Since it is difiicult to seal metallic vessels that 40 contain the quenching fluid, either the said quenching fluid will evaporate, or if quenching powders are used, such powders will become damp, so that it will to a considerable extent lose its quenching ca acity.

45 All these disadvantages are entirely removed by the object of my invention. This is attained by the absence of any mechanical device whatever as well as by the absence of a shot-firing cable, the whole device being made without the so use of any metal but solely of artificial resin or the like, which has the advantage of not requiring any sealing or packing members, due to the fact that the individual parts of the container may be assembled to form a uniform piece by so coating the threads with some solvent, so that the joints are directly pasted together and the use of any sealing material is avoided. Thus, neither can the quenching means escape, nor can it undergo an alteration in the course of time. The forcing out of the quenching means takes place due to the fact that a portion of the quenching device is made of a readily inflammable material such as celluloid which will be directly ignited by the flre kindled. This ignitible member contains gunpowder or the like, the combustion of which will produce a considerable pressure above atmospheric, due to which the quenching fluid will be driven out with great strength.

If the apparatus is used for the purpose of avoiding carburettor fires in automobiles, it should be mounted above the carburettor so that the bottom of the apparatus is turned toward the burning area. On the breaking-out of a fire the readily ignitible shot-firing fuse that ends at the said area will therefore be at once ignited, so that a momentary effect of the quenching device will take place. Other advantages of the use of artificial resin over the use of metal are the small weight and measurements of the device, which both are apt to favorably influence the price of the apparatus.

In the drawing, an example of an embodiment of the invention is illustrated.

Fig. 1 is a longitudinal section of the quenching device according to the invention; and

Fig. 2 shows the atomiser which forms a part of the quenching device.

I is a container made of artificial resin or the like. The said container is sealed at the top thereof by a cap 2 threaded on, and, by means of a fluid, pasted onto member I. At the bottom of the said container a bottom plate 3 made of a readily inflammable material such as celluloid is tightly fitted in. The said container is almost completely filled with a quenching fluid, such as carbon tetrachloride, ethyl bromide or the like. These quenching fluids are chemically neutral to artificial resin and celluloid, so that no alterations can take place by the action of these chemicals. Into the bottom plate a small tube 4 is inserted, which, at least at its lower part, that is, where it isfltted into the bottom plate, is made of a readily inflammable material, such as, for example, celluloid. The upper portion of the small tube, which,

0 preferably, is flared at 5, may be made of a less readily inflammable material. The tube is filled with gunpowder or the like. At the bottom of the container a conical extension 6 is mounted, say, bymeans of screws. In order to obtain eflicient atomization of the quenching fluid, a plate 9 is l imtened to the bottom or the eonteiner i, melon piste is formed with e ster-sheped out or loieniz. The said piste is held by means of e ring tit The eontsiner is appropriately fastened at time ereri where it is to be protected from fire. For this pur nose may be used e iesteninsmeans which en= oompeesw the eontniner and son be tightened end iestened by mesne oi o bolt 3.

strueturei modifications oi time device described my its made without ei'iendonine the scope oi time preterit invention. Thus, the bottom plate 63 mny toe mde oi urtificielresin insteed of celluloid end tony be nli of a piece with member i so tlnet, it desired, only the smell tune 3 with the flare 5 is made of en in materiel, such as celluloid. in either oese, however, the efieot wiil be the some, sinee, due to the broizemout fire, the lower nortion oi the tube #3 will be burnt end, thereby, the gunpowder ignited end the quenching menus driven out.

it is to be understood that the device according to the invention is not limited to the use in automobiles, but may be employed with advantage in explosion motors in general, as well as in cinema,- oebins or places for storing ignitable materiel.

i. In a fire extin e molded container termed-oi e synthetic resin, on extinguishing me,-

enseeso teriel in said container, as sweetened end Wed inteernily formed in said container, said wall having es en insert s tube projecting tnerethroueh and. extending into the interior of said container, an explosive mnteriei carried by the inner end of said tube, fuse moons extending through ssid tube and eonimunicetlng with said explosive materiel, and it highly inflammable outer end portion on seid tube oontscting seld fuse menus.

2. In e fire extinguisher, e. molded container formed oi e synthetic resin, e volstile entineuisit= ing liquid substantially filling said oonteiner, e treelzened end wsli integrally formed in said can teiner, sold well moving as an insert it tube proiecting therethrough end extending into the interior of sold container, on eniereed "chamber iormed on the inner end of said tube and snr= rounded by sold liquid, an explosive materiel eon fined in said chamber, fuse means contained in said tube and communicating with said explosive, a highly in m ble materiel comprising the outer end of said tube and contacting said fuse means, and a. cap of said synthetic resin forming a closure for the other end of sold container and integrally secured therewith by a homogenous

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