US1708869A - Fire extinguisher - Google Patents

Description

April 9, 1929. H BUDDECKE l .1,708,869

-FIRE EXTINCTUISHEIR 'm Filed Aug. 21, 192e y 2 sheets-sheet 1 April 9, 1929. H. BUDDECKE FIRE EXTINGUISHER Filed Aug. ai, 192e 2 sheets-sheet Patented Apr. 9, 1929.

UNITED STATES HARTMUT BUDDEKE, OF CHARLOTTENBURG, NEAR BERLIN, GERMANY.

FIRE EXTINGUISHEIQ.

Application led August 21, 1926, Serial No. 130,699, and in Germany .Tune 4, 1926.

My invention relates to a fire-extinguisher provided with a fuse, preferably of the kind called quick-match in mining, transmitting quickly tire to a cartridge by which the exe tinguishing substance is then thrown automatically upon the burningtobject whereby the fire is extinguished. The present im* proved tire extinguisher is so designed as to be adapted for use in connection with a dry or pulverulcnt extinguishing substance, as well as with a liquid one.

The invention is illustrated diagrammatically and by way of example on the accompanying drawings on which-Figure l is an axial sect-ion through a constructional form intended for use in connection with a dry extinguishing substance, if e. a pulverulent one, Figure 2 a plan thereof, Figure 3 a view similar to Figure 1, showing a modification intended for use in connection with a liquid,

- extinguishing substance, and Figure @t a detail of this modification, all as fully described hereinafter.

Referring to Figures l and 2, the pulverulent extinguishing substance d is enclosed in a metallic casing a closed` at'its bottom by a glass plate aiixed to the casing by a screw-cap c.

The casing is mounted near the place where a tire may, under-circumstances, arise, and in close proximity to this place is 1ocated a cap la or an equivalent member consisting of aneasily inflammable material and being attached to a tube g connecting said cap with the casing a or, more precisely, with a cartridge located in the head of said casing just over the extinguishing powder d. In the tube g is enclosed a fuse impregnated with a gun-powder pulp by which the tire` can be transmitted practically instantaneously from the burning cap h to said cartridge so as to explode the explosive contents thereof. rlhe force of such an explosion taking place in the closed container will cause the glass Z) to become broken andscattered together with the powder d over the burning object or tire arising therefrom so as to extinguish the latter.

The explosive' powder j is enclosed in the cartridge f aiiixed to the casing a by a screwcap f' and closed at its inner end by a-thin metallic bottom z'. The fuse extends into the explosive powder, as shown at 7c. More pre cisely, the cartridge is inserted into an externally threaded socket e upon which the cap f is screwed whereby the cartridge f 1s retained and secured in its place.

Referring now to the modification shown 1n Figs. 3 and 4, this is intended for use in connection with a liquid extinguishing substance (Z enclosed in a vessel fm, inserted into the casing a and retained therein by a screwcap c. The liquid substance may be tetrachloroca-rbon or the like. The bottom n of the vessel m, as well as the top plate n of the same, are so designed as to be adapted to be destroyed quickly by the explosion of the cartridge. I prefer to use thinner sheetmetal for these parts; besides, the top-plate "n which is soldered to the inner top rim of the vessel m is concave, and the bottom n is provided with a plurality of radial grooves s, Fig. 4, diminishing the resistibility of the bottom in such a measure that it gives way immediately after the ignition and explosion of the cartridge.

' rIhe fuse carrying tube g may have one o r more branches g as shown in Fi ureA 3 and the free end of each branch tu e is provided with a cap it whereby the cap may be distributed about an object which is liable to catch lire. Bolts t are secured to the casing a whereby the latter may be attached to a suitable support and the container 'm is provided at one .side with a recess m for the reception of the inner heads of the bolts t.

I claim: l

1.v A fire-extinguisher, comprising, in combination, a casing having an open ejecting end, and the walls of which are adapted to resist high internal pressure, an exchangeable vessel in said casing and an extinguishing liquid in said vessel, the top and the bottom of said vessel beingso designed as to have a lesser resistance than its circumferential wall; a cartridge located counter to the top of the said vessel; a metallic socket enclosing said cartridge and connecting it with said casing, and a cap nut screwed upon said socket and retaining said cartridge therein; a tube extending forth from said socket and cartridge, a fuse extending from the explosive contents of the cartridge through said tube, and a combustible member closing an opening of t-he tube and being in contact with said fuse.

2. A fire-extinguisher, comprising, in combination, a casing having an open ejecting end, and the walls of which are adapted to resist high internal pressure, an exchangeable vessel in said casing, and an extinguishing liquid in said vessel, the top of this latter being formed by a sheet-metal piece which is thinner than the other Wall portions of the vessel and soldered thereto; a cartridge located counter to the top of the said vessel; a metallic socket enclosing said cartridge and connecting it with said casing, and a cap nutscrewed upon said socket and retaining Said cartridge therein; e tube extending forth from said socket and cartridgev` a fuse extending from the explosive contents of the Cartridge through said tube, and a combustible member closing an opening of the tube and being in Contact with said fuse.

3. A lire-extinguisher, comprising, in combination, a casing having an open ejecting end, and the Walls of which are adapted to resist high internal pressure, an exchangeable vessel in Said casing, and an extinguishing liquid in said vessel, the bottom of this 1atter being provided with grooves diminishing the resistance thereof, a cartridge located counter to the top of the said vessel; a metallic Socket enclosing said cartridge and connecting it with said casing, and a cap nut screwed upon said socket andretaining said Cartridge therein; atube extending forth from said socket and cartridge, a fuse extending from the explosive contents of the cartridge through said tube, and a combustible member closing an opening of the tube and being in Contact with said fuse.

In Witness whereof I have hereunto set my hand.

HARTMUT BUDDECKE.

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