US1550308A - Fire-extinguishing device - Google Patents

Description

Au 18, 1925. N 1,550,308

0. R. ERWIN FIRE BXTINGUISHING DEVICE F iled Dec.' 1920 2 Sheets$heet 1 Zjwwewtoz OrZaJZdOREPwim $511 7 1's alien wits 042 144 W4 we Aug. 18,

1,550,308 O. R. ERWIN FIRE EXTINGUISHING DEVICE Filed Dec. 1920 2 Shuts-Sheet 2 mmtoz Or'ZcmdOR. Era/20,

I 1's War/nu s Patented Aug. 18, 1925.

UNITED STATES 1,550 PATENT OFFICE.

ORLANDO ERwimonro EsrHInLs, NEW YOR AssIeiNoR To roAMrrn-oHILns CORPORATION, or NEW YORK, N. Y., A CORPORATION or DELAWARE.

FIRE-'EXTINGUIsHING Device.

Application filed December 10, 1920.

To all whom it may (game m:

Be it known that I, ORLANDO R. ERWIN, a citizen of the United States, and resident of Forest Hills, in the county of Queens and State of New York, have invented oer tain new and useful Improvements in Fire- Extinguishing Devices, of which the following is aspecificaition.

This invention relates to foam-=type portable fire extinguishers and its object is to prevent premature mixing of the solutions when the extinguisher is being carried about and otherwise to improve such extinguishers.

In the accompanying drawing:

Figure 1 is an elevational view in cross section of my extinguisher,

Figure 2 is a top plan view thereof,

Figure'3 is a cross sectional view on the line 33, Figure 1,

Figure 4 is a cross sectional view of a portion of the device on the line 4-4, Figure 2,

Figure 5 is an elevational view in cross section of a modified form of the extinguisher,

Figure 6 is a top plan view of form shown in Figure 5,

Fi ure 7 is a cross sectional view on the line (7, Figure 5, and

Figure 8 is a cross sectional View of a por tion of the device on the line 8-8, Figure 6.

Referring to Figures 1 to 4 of the drawings, the container comprises an outer receptacle having preferably a cylindrical body portion 10;this body portion beingprovided preferably with integral end supporting portions 11 and 12 respectively; said end stippb'rting portions terminating in reinforced beads 13 and 14 respectively for efliciently supporting the container in both erectandinverted positions, the erect position of the container being shown in Figure 1. The outer receptacle is provided with a bottom which may be a dished bottom 15', having an annular flange portion 16, the bottom 15 being inserted through the end supporting portion 11, with the rim of the flange 16 seating on the inwardly stamped armnlar bead 17, the bottom 15 being preferably fixed in this position by means of being brazed to the cylindrical wall of the outer receptacle, as at 18. The top of. the container is closed by a dome 19, having an annular flange 2O seated on the inwardly stamped annular head 21, the dome being either permanently Serial Nd. 429,660.

fixed in position on the container or removable therefrom as inay be desired, the preferred form of the device being shown in the drawings and in which the dome is permanently fixed in position on the container by means of being soldered to the container, as at 22. I i

The inner receptacle comprises preferably a cylindrical shell 23, having a bottom 2a of similar contour to the dished bottom 15 of the outer receptacle, the said bottom 24 being either permanently fixed'with respect to the bottom of the outer receptacle or removable herefroi'n as may be desired, it being preferred to permanently fin the inner receptacle with respect to the outer receptacle by brazing the bottom 24 centrally on the bottom 15. i I

The inner and outer receptacles divide the container into two compartments which, inthe preferred form, consists of a central inner compartment and an annular outer com artment; the inner compartment being intended for the reception of the A or acid solution and the outer compartment being intended for the B or basic solution, either or both solutions being provided with a foam producing material.

For the purpose of preventing any un- 1 timely comixtures of these solutions to prevent the untimely generation of foam, means is provided for the prevention of splashing of the solutions, such means including provisions for preventing the transmission or propagation of wave formations set up in the receptacles during ordinary transit of the container. In my present invention such means take the form of baiile plates, subdividing portions of the receptacles at their upper ends, the baffle plates beingarranged pre'fenably in a radial manner, the inner receptacle being provided with the radial baffle plates 25b'razed together, as at 26, these plates fitting the inner surface of the inner receptacle, the plates being held by said surface either frictionally or by being brazedto the said surface, these plates being fitted to the inner receptacle adjacent the ripper and open end thereof and extending longitudinally in the receptacle for p'ref erably only a portion of the said receptacle. The baflie plates for the outer annular compartment may be arranged in a similar manner to that shown for the inner receptacle but in the preferred form such outer baffle plates Ill) comprise a plurality of elements 27 having a Ushaped cross sectional formation, the bottom 28 of the U fitting the outer surface of the inner receptacle, the said portion 28 being permanently fitted to said inner receptacle, as by being brazed thereto. The walls 29 of the elements 27 comprise the bafiie plates proper, said walls extending the width of the annular compartment and terminating adjacent the inturned annular bead 30, the

plates 29 being supported by the said bead 30 and being retained thereon either frictiona-lly or by being soldered or brazed thereto. These radial baflle plates subdividing each compartment adjacent the upper ends thereof provide means for the prevention of wave propagation in the said compartment-s, thus breaking up any tendency of the solutions to splash during handling of the container. It will be furthermore noted that the outer baffle plates 29, besides accomplishing the purpose of producing a splash proof effect, further accomplish the purpose of supporting the inner receptacle within the outer receptacle by the engagement or the fixed engagement of the plates 29 with the annular bead 30. This support taken together with the support between the bottoms of both receptacles, effectively retains the inner receptacle within the outer receptacle and such support eliminates the prior means of supporting the said inner receptacle, which hitherto has extended into that portion of the container where comixture takes place, forming an obstruction in said chamber, which obstruction prevented, in some degree, the efficient formation and emission of the generated foam. The present supporting means eliminates such obstructive means.

The dome 19 is provided with openings 31 and 32, alined respectively with the inner and outer compartments, the said openings being provided for the purpose of charging the inner compartment with the A solution and the outer compartment with the B solution. Each opening is provided with a tubular member 33 fitted to the interior of the dome, as by brazing the flange portion 34 to the inner surface of the dome, the said tubular members being properly threaded, as at 35, for the reception of internally threaded closure means 36, gaskets 37 being provided to secure a. more efficient closure.

The dome 19 forms a wall of that portion of the device where comixture of the solutions takes place and said dome is appropriately provided with a threaded nipple 3S fitted to the interior surface of the dome, as by being brazed thereto at 39, the thread of the nipple receiving the usual nozzle 10, the nozzle being insertible through an opening in the upper supporting end 12.

For the purpose of conveniently handling the device in the event of fire, the end supporting means 1]. and. are provided with straps 41 and 42, said straps being adapted to be manually grasped by the operator.

In the form of the device shown in Fig ures 5 to 8 of the drawings, means is further provided to minimize the tendency of the solutions from splashing upwardly, such means for the inner receptacle taking the form of a centrally located plate 13 and for the outer receptacle taking the form of spaced annular plates 4H- and f5. These plates not only minimize the upward splash ing ofthe solutions, thereby further providing a splash proof effect; but also serve the purpose of regulating the flow of the solutions into the mixing portion of the container in the event of fire, as will hereinafter appear.

The use and operation of my extinguisher will be apparent from the above description thereof. The charging of the compartments is effected through the charging openings 31 and 32. During ordinary handling of the device or during transit of the device on a vehicle, the baffle plates f0 7111 an effective barrier for the propagation of any waves set up in the compartments, this preventing to a large degree the tendency of the solu tions to splash during such transit. The outer baffle plates also provide a firm support for the inner receptacle, doing away with any obstructing support in the mixing portion of the container.

Use of such baffle plates further eliminates the necessity of unsure stopplc means, this further eliminating unnecessary obstructions in the path of foam emission in the mixing portion of the device. In the event of fire the container is grasped by the operator, straps 11 and 42 being conveniently supplied for this purpose, the container being tilted or inverted, permitting the solutions in the receptacles to How into the normally upper portion of the device, to be there comixed to produce a fire extinguishing foam. In the form shown in Figures 5 to 8, the central and the annular plates 43 to 45, further provide a splash proof effect and at the same time permit of a regulated flow of the solutions into the mixing chamber, the annular openings 16 and 47 being predetermined for the proper regulation of such flow, this regulated flow of the solutions affording a gradual comixture of the solutions and minimizing pressure strains in the container.

It will be apparent that although I have shown the parts as permanently fitted together, it may be found convenient for cleaning purposes to make the parts easily sepaable, for example, the inner container instead of being soldered at points to the outer container, may be fitted to the outer container, being held therein by friction of parts, the dome being made removable instead of being permanently fixed to the walls of the container in order to permit the the reception of component solutions which upon admixture produce a fire extinguishing medium, and anti-splash means longitudinally subdividing the compartment between the containers, thesaid anti-splash means being constructed to support the inner container in the outer container.

2. A fire extinguishing device comprising an outer container and an inner container; said containers defining compartments both open at an end thereof for the reception of component solutions which upon admixture produce a fire extinguishing medium, and means longitudinally subdividing each of the containers adjacent the open ends thereof; said means being constructed and arranged to prevent splashing of the solutions in the said compartments.

3. A fire extinguishing device comprising an outer container and an inner container, said containers defining compartments for the reception of component solutions which upon admixture produce a fire extinguishing medium, anti-splash means longitudinally subdividing the compartment between the containers, the said anti-splash means being constructed to support the inner container in the outer container, and anti-splash means longitudinally subdividing the compartment defined by the inner container.

4c. A fire extinguishing device comprising a plurality of containers defining a plurality of compartments, the compartments being adapted to hold component solutions which upon admixture produce a fire extinguishing medium, and means for preventing splashing of the solutions in said compartments, said means comprising baffle plates longitudinally subdividing the compartments, some of the baflie plates being constructed to support one container within the other.

5. A fire extinguishing device comprising an outer container and an inner container; said containers defining compartments both open at an end thereof for the reception of component solutions which upon admixture produce a fire extinguishing medium, and means for preventing splashing of said solutions in said compartments, said means comprising radial baflie plates subdividing such compartments.

6. A fire extinguishing device comprising a container subdivided into a plurality of compartments open at an end thereof, the compartments adapted to hold component solutions which upon admixture produce a fire extinguishing medium, and means for preventing splashing of said solutions in said compartments longitudinally of the same, said means comprising hafiie plates subdividing a portion only of such compartments at the open ends thereof.

7. A fire extinguishing device comprising a plurality of containers defining open ended compartments for the reception of component solutions which upon comixture pro,- duce a fire extinguishing medium including an inner container for holding one of the solutions, said inner container being pro vided at the open end thereof with radial battle plates for preventing splashing of the solution content therein.

8. In a fire extinguishing device in which ed to be mounted within an outer container i for holding one of the solutions, said inner container being provided interiorly and exteriorly at one end thereof with bafile plates for preventing splashing of the solutions held by the containers.

9. In a fire extinguishing device in which are provided a plurality of compartments, for the reception of component solutions which upon admixture produce afire extinguishing medium, an inner container adapted to be mounted within an outer container for holding one of the solutions, said inner container being provided interiorly and exteriorly at one end thereof with radial baflie plates for preventing splashing of thesolutions held by the containers, the battle plates on the exterior of the inner container providing a means for supporting the inner within the outer container.

10. A fire extinguishing device comprising a container subdivided into a plurality of compartments open at one end thereof, the compartments adapted to hold component solutions which on admixture produce a fire extinguishing medium, and means adjacent the open ends of the compartments for pre venting splashing of said solutions in said compartments; said means comprising pro-- visions for preventing" the propagation of wave formations set up in said compartments, and further provisions for preventing movement of the solutions out of the compartments incident to transportation of the device, said latter provisions being constructed and arranged to permit a regulated feed of the solutions upon inversion of the device in the event of fire emergencies.

11. In a fire extinguishing device in which are provided a plurality of compartments for the reception of component solutions which upon admixture produce a fire extinguishing medium, an inner container for holding one of the solutions, said inner container being provided at one end thereof with means for preventing splashing of the solution contained therein, said means comprising provisions for preventing propagation of wave formations set up in the container, and further provisions for preventing movement of the solution out of the con tainer incident to transportation 01" the de-- vice.

12. In a lire extinguishing device in which are provided a plurality of compartments for the reception of component solutions which upon admixture produce a fire extinguishing medium, an inner container adapted to be mounted within an outer container for holding one of the solutions, said inner container being provided interiorly and exteriorly at one end thereof with longitudinally arranged bafile plates for preventing splashing of the solutions held by the containers, and disks mounted on the baffle plates for further preventing splashing ot' the said solutions.

13. A fire extinguishing device comprising an outer and an inner container; said containers defining compartments both open at an end thereof for the reception of com ponent solutions which upon admixture produce a fire extinguishing medium, baflle plates fitted to said containers and extending longitudinally of said containers at the open ends thereof, and disks mounted on said plates at the open ends of the con tainers and extending transversely of the said containers; the plates and disks providing means for preventing splashing of the solutions in the containers.

Signed at New York in the county of New York and State of New York this 3rd day of December A. D. 1920.

ORLANDO R. Eli- IN.

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