US1338828A - Cartridge for chemical fire-extinguishers - Google Patents

Description

C. GRAAFF.

CARTRIDGE FOR CHEMICAL FIRE EXTINGUISHERS.

APPLICATION FILED MAY 26. 1915. RENEWED SEPT. 24. 1918.

1,888,828. Pa e e y4,1920.

j does not entail any danger of an explosion ing at chemicals contained in it UNIT D STATES PATENT OFFICE.

CLEMENS GBAAFF, OF BERLIN, GERMANY, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

CHEMICAL FOUNDATION, INC., A CORPORATION OF DELAWARE.

CARTRIDGE non cnEmcAL rmn-nx'rmeursnnns.

Application filed May 26, 1915, Serial No. 80,665,.

To all whom it may concern Be it known that I, CLEMENS GRAAFF, a subject of the German Emperor, and resid- 17 Linkstrasse, Berlin, W. 9, Germany, have invented certain new. and useful Improvements in Cartridges for Chemical Fire-Extinguishers, of which the following is a specification.

The present invention relates to a cartridge for chemicalfire-extinguishers, which in consequence of a drop or a blow, and with which, when in use, the reaction of the proceeds so calmly, that it is. impossible for the said chemicals or the products of the reaction to be driven out of the container of the extinguisher, and that gas is generated during the whole period of'operation of the extinguisher, so that the jet of liquid emerging from the latter will have a constant, reach. The fact that with the cartridge according to the present invention only gases emerge from it during its operation, renders the saidcartridge suitable for use notonly in fire extinguishe'rs employing a liquid of an composition, but also with the so-called ry extinguishers.

The cartridge is adapted to be positioned within a suitable fire extinguisher casing and contains a chemical or a mixture of chemicals adapted to produce the gas, in a chamber which'is subdivided by a plurality of perforated partitions. Another chemical or mixture of chemicals is contained in a capsule, which is displaceably disposed in the cartridge and is adapted to be opened in a suitable manner, when the extinguisher is operated. This capsule is connected with the lid of thecartridge in such a manner,

that when the cartridge falls into a position which admits of reaction between the several constituents, it will tear a hole in said lid, through which the gases generated may escape, so that the cartridge can not burst due to an excessive internal pressure.

In the accompanying drawing a preferred embodiment of the present invention is. exemplified. v

In this drawing m is a cylindrichl container or vessel, which is closed at one end by a bottom wall '1, and close to its otherend by a lid u. The latter has anopening 2, which is sealed by a lead foil 3 or the like. Within the cartridge is disposed a Specification of Letters Patent.

Patented May 4, 1920.

Renewed September 24, 1918. Serial No. 255,529.

capsule g, which contains one of the chemicals or a mixture of chemicals 'for generating the gas, and these chemicals may, if necessary, be incased in a glass vessel t. The vessel t is supported in a suitable man ner, within the capsule g, with the object of avoiding. its being broken, if the cartridge should fall or receive a blow, not intended to operate the cartridge. The capsule 9 1s, furthermore as herembefore stated, displaceable within the cartridge. It is centered in the vessel on by means of scalloped flange disks or teeth 4. A pin 5 connected to the capsule g passes with a close -joint through the said lead foil 3 and is secured in a metal disk 6 the diameter of which is smaller than that of the opening 2 in the lid u of the cartridge, so that the latter may be opened by means of a movable plunger or thelike P, fitted to the extinguisher and entering into the cartridge to displacing the capsule g. lit the cartridge when in position in a fire extinguisher casing about the position shown in-the drawing, the capsule Q will, according to the force of the impact, either be held unmoved, so that it will not be opened, or, it will by its kinetic energy break the lead foil 3 b means of the pin 5 and the disk 6. Thereby an opening is produced in the cartridge, through which, in case the capsule is unintentionally opened, the gases ma escape into the fire extinguisher casing w ich is adapted to inclose it without causing any danger.

The capsule g is provided with a neck 8, which is sealed at its upper end by means of alead foil 7 or the like. Into this neck engages a tube 9 secured to the bottom 1 of the cartrid e and having holes 8 at its lower end. he neck 8 of the capsule 9 slides in a perforated tube 10, which serves to distribute the chemicals emerging from the capsule, and also for limiting the stroke of should fall to the ground in v q forwar thereof gradually into the the fire extinguisher, or a movable plunger or the like, P a blow is exerted against the disk 6, whereby the lead foil 3 s broken. The plun erthereupon pushes the capsule until the tube 9 breaks through the lead foil 7 at the upper end of the neck of said capsule, penetrates into the interior of the capsule and there breaks the vessel 8? containing the chemicals. The further displacement ofthe capsule g is then' revented by the edge of tube 10, so that the perforated late 12 will not be covered and closed by t e bottom of the capsule Q.

The chemical emerging from the capsule g enters into the tube 10 and emerges from the same through the numerous perforations adjoining chamber, and thence into the other chambers mixing with the chemicals contained in these chambers. By such means the reaction of the chemicals acting upon each other in the cartridge for generating the gas proceeds quite calmly, uniformly and so slowly, that on the one hand, no mixing chemicals will be ejected until they have become extinguishing chemicals, and on the other a constant pressure is produced in the fire latter will remain constant from the beginnir ig to the end of its operation.

he gas produced by the reaction passes through the annular the wall of the capsule g and the wall of the vessel m and through the openin 2 into the container of the fire extinguis er not shown in the drawin ing downward and t e thus, travel along whereby the calm gases rising upward entirely different paths, operation of the cartridge is furthermore considerably im proved.

Chemicals likewise enter from the capsule 9 into the tube 9, containing other chemicals and penetrating into the capsule in operating the cartride. Thus there wil be a chemical reaction in this tube as Well. The gas there produced enters into the ca sule g and facilitates the discharge of t e chemlcals therefrom.

-I claim: v 1, A cartridge for chemical fire extinguishers having a' reaction chamber, means ividing the reaction chamber of said cartridge into a plurality cells or the like.-

2. -A cartridge for chemical fire extinguishers having a reaction chamber, the reaction chamber artitions into a plurality rs, cells or the like.

3. A cartridge for chemical fire extinguishers of smaller chambers,

of small chamadapted to react on tioned within sair proximity to said extinguisher, whereby the reach of the space formed between The chemicals flowsaid subdivided by, perforated having a reaction chamber, means dividing the reaction tridge into a plurality a chemicalcin capsule, chemical positioned within said cartridge and in close chamber and said chemical in the reaction chamber and thereby generates gas, means for limiting the stroke of said capsule, said capsule provided adapted to enter the'reaction' chamber on proximity to said reaction the dlsplacement of said capsule.

4. A cartridge for chemical fire extinguishers having a reaction chamber, means dividing the reaction chamber of said cartridge into a plurality of smaller chambers,

a chemical in said chambers, a displaceable capsule, contalnin another chemlcal posireaction chamber and adapted to react on said chemical in the reaction chamber and thereby generate gas, means for limiting the stroke of said capsule, said capsule provided with a neck,

adapted to enter the reaction chamber on of-said capsule, a tube atthe displacement tach'ed to said reaction chamber adapted to penetrate into the capsule on the displacement of the latter, said tube containing the a displaceable with a neck,

cartridge and in close first chemical and adapted to receive a part of the chemical contained in the capsule.

5. A cartridge for chemical fire extinguishers having a reaction chamber, means dividing the reaction chamber of said cartridge into a plurality of smaller chambers, a chemical in said chambers, capsule, containing another chemical posie tioned within said cartridge and in close proximity to said reaction chamber and adapted to react on said chemical in the reaction chamber and thereby generate gas, means for limiting the strokerof, said ca sule, said capsule provided with a' neck, adapted to enter the reaction chamber on the displacement of said capsule, a tube attached to said reaction chamber, adapted to penetrate into the capsule on the dlsplacement of the latter,.sa1d tube containing the first chemicaland adaptedto receive 'a part of the chemical contained-in the capsule, said capsule attached to the lid of'the cartridge, a'readily broken seal in said lid, the capsule adapted to break said seal, in

a displaceable I case the cartridge should drop or receive a blow.

In testimonfy whereof I aflix my signature in presence 0

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