US858381A - Fire-extinguisher. - Google Patents

Description

No; 858,381. PATENTED JULY 2, 1907.

I K, GRTINWALD.

,FIRE EXTINGUISHBR. APPLIOATION FILED NOV .6,1906. J

I Witnesses. l

' UNITED STATES PATENT OFFICE.

KARI GRU'NWALD, OF HAMBURG, GERMAN Y, ASSIGNOR TO THE FIRM OF PLUVIUS FEUER- LOSGI-IER GESELLSGHAFT MIT BESGHRANKTER HAFTUNG, OF HAMBURG, GERMANY;

FIRE-EXTINGUISHER.

Specification of Letters Patent.

Patented July 2, 1907.

Application filed November 6, 1906. Serial No. 342,239.

To all whom it may concern:

the Austrian Emperor, and a resident of Hamburg,

Germany, have invented certain new and useful Improvements in Fire-Extinguishers, of which the following is a specification.

' The present invention relates to improvements in fire-extinguishers wherein the production of pressure in "a receptacle or casing containing, for example, water and bicarbonate of soda, is effected on the fracture of a glass bottle filled with sulfuric acid, and wherein the extinguishing fluid is forced out through an internal discharge pipe provided with an external nozzle or mouth piece. In fire-extinguishers of this class the discharge pipe and the nozzle are generally arranged so as to be easily removable from the receptacle, in order that the pipe and nozzle may be inspected and cleaned.

But the connection between the discharge pipe or sprinkler tube and the nozzle, and the attachment of the tube and the nozzle to or in the extinguisher casing is complicated.

In the present invention these complications are avoided, in that the discharge pipe and nozzle are produced as a connected whole or entity. By loosening or 2 5' fastening a single securing member they can be readily and rapidly removed, oragain restored to the position of use.

By constructing the discharge pipe and the nozzle so as to form practically one single piece, it can be attached to the receptacle of the fire extinguisher by means of a suitable nut. This improved construction or arrangement is particularly adapted for fire extinguishers the receptacles of which have a conical or fiat-conical form, oval in cross-section.

In the accompanying sheet of drawings, Figure 1 is a vertical section showing one embodiment of the invention; and Fig. 2 is a section onithe line A-B of Fig. 1. The receptacle d is preferably conical in form and oval in cross-section, as shown in Fig. 2, and has a coup- 40 ling-piece e provided with exterior screw-threads secured in the mouth thereof-by any well known means.

The discharge pipe consists of a length of tubing 0 provided at one end with a mouth-piece 01' nozzle a and at its other end with a sieve b. This pipe is suspended in the receptacle by means of a flange a formed on the nozzle, and is adapted to close the mouth of the receptacle. A gas-tight connection with the coupling is ef-. fected by means of a nut j which is screwed onto the threads of the coupling, and suitable packing rings or washers may be interposed between the top of the coupling and the flange, as well as between the coupling and nut.

For securing and guiding the lower end of the slightly bent pipe 0 I employ a funnel-shaped guide sleeve 9 fitted near the bottom of the receptacle d. It is evident that after removing the nutf the discharge pipe 0 with the nozzle a can at once be removed and cleaned apart from the receptacle, without discharging the contents of the latter or otherwise interfering with the extinguisher. The fitting and fastening of the tubing 0 with the nozzle a can be effected simply and rapidly, as it is only necessaryto insert the tubing with the nozzle into the receptacle and then screw on the nut.

For storing the chemicals, for instance, sulfuric acid, I employa bottle h'which is preferably fitted inasievelike cylinderlc mounted in a bracketi. A lateral opening in the wall of the receptacle is provided for the insertion of the bottle, whose bottom rests on a spike l in a crossbar of the bracket. The neck of the bottle projects into a cap m carried by a spring-actuated spindle having pressure knob 07, and movable in a screw-cap 0 which closes the opening in the wall of the casing d.

The extinguisher is operated in the following manner: The receptacle being preferably provided with a handle, is held in one hand of the operator while, by means of the other hand, pressure is exerted on the knob 11 and jams the bottle between the cap m and the fixed spike I, thus fracturing the bottle. The sulfuric acid contained therein mixes with the carbonate solution and generates the carbonic acid gas, producing a sufiicient pressure to eject the contents from the receptacle.

I claim A fire extinguisher, comprising a receptacle, a screwthreaded coupling mounted in the mouth of said receptacle, a curved discharge-pipe reaching from the bottom of the receptacle to the mouth thereof, a sieve mounted in the receiving end of the pipe, a nozzle on the dischargeend of said pipe, a flange on said nozzle adapted to be seated on the coupling, a nut surrounding the nozzle having screw-threads engaging the threads of the coupling, a funnel-shaped guide sleeve in the receptacle near the bottom thereof to receive the lower end of the discharge pipe, in combination with a bracket mounted within the receptacle near the bottom thereof, a perforated cylinder within the bracket, a bottle mounted in said cylinder, a spike engaging the bottomof the bottle, a spring-actuated spindle, a cap carried by the latter taking'over the neck of the said bottle and a screw-cap in which the spindle is movably mounted adapted to close an aperture in the side of the receptacle.

KARL GRUNWALD.

Witnesses MAX A. G. LEMCKE, ERNEST H. L. MUMMENHOFF.

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