US2268964A - Fire extinguisher - Google Patents

Description

Psiented Jen. s, 1942 ma Ex'rmo e Y nseoid v. ssireu, Losanseies, com.. seamos-,ty `direetand mesnealsignments,to'leteo0e.,-a

corporation of California y n ,Appne'stion November 15, raadsel-iol No. :4am

s (ci. zas-ss) 'rnis invention relates te s nre extinguisher and more particularly pertains to a combined container and applicator for fire extinguishing compounds of the character'set forth in my copending application for Letters Patent Serial Number 227,970, filed September 1, 1938.

The primary object of the invention is to provide a combined container-and applicator for a lire extinguishing compound composed of Ygas and liquid under pressure, of the type embodying a discharge nozzle tted with a seal adapted to be readily broken to permit discharge through l the nozzle of the iluid content from the container under the urge of gas pressure developed therein, in which the nozzle is so formed that it may be readily applied to a preformed end wall of a container and strongly aillxed thereto.

Another object is to provide a construction in the applicator nozzle for facilitating sealing thereof in a' fashion to insure against leakage therethrough from the container of gas and liquid under pressure confined therein.

vAnother object is to provide a means for facilitating manual opening of the applicator nozzle topermit discharge of the contents of the container embodying a gripping lever amxed to the nomic and arranged to be operated from the side of the nozzle tip opposite. the direction ofv discharge therefrom. l

With the foregoing objects in view, together with-'such other objects and advantages as may e subsequently appear, the invention is carried into eifistt-as illustrated by way of example in th accompanying drawing, in which: mg. 1 is a perspective view of the nre extinfguisher" showing it as mounted and in readiness or use: Figrz is a plan view of 'the extinguisher with portions broken away:

` 3 is a detail in section of the upper portion of the` extinguisher taken on the line 3-3 of Fig. 2 showing the manner of constructing I the applicator nozzle and its seal, and depicting the manner of opening the nozzle;

Fig. 4isaviewin sectionsimilartoFig.-3

' showing the nozzle in its open position;

Fig. 5 is a view in section and elevation of the applicator nozzle depicting a modified form ofthe invention.

, Referring'to the drawing more specifically A indicates generally-a container which may be of any suitable construction but which is here shown as comprising inI mostpart the ordinary 4tineanoi'comn'ierceembodyingtheusualbot- 8, .which latter, however, 'is here shown slightly modified in its construction to adapt it for purposes of the present invention; the end wall l embodying a frusto conical wall portion 9 connected at thebase thereof to'the'upper margin of the cylindrical side wall 1 and merging at its reduced end portion into a cylindrical wall I0 which connects at its outer end with an.

integral end wall il. Formed adjacent one 10 margin of the end wall Il is a slightly elongated opening 2 of general elliptical form arranged with its long axis extending radially of the end wall il to one side of the center thereof. The wall Il is slightly dished to -ail'ord an inclined l5 wall portion a leading upwardly from the inner end ofthe opening l2 tothe opposed rim portion of the wall Il.

The container-A is equipped with a discharge nozzle B which is here shown as formed of a 20 continuoustube -which is vbent intermediate its ends toform an elbow Il connecting end portions il and li that extend at an acute angle relative tov each other; the end portion I5 being inserted into the container A through the open@ il ing Iland being of such length that the free-end thereof will be disposedat a point adjacent the intersection of the bottom wall i with the side wall 1 of the container when the elbow i4 is'. I

positioned in the opening i2 with the other end $0 portion Il of the tube seating on the inclined portion a of the wall' Il leading between the opening i2 and the marginal portion of the wall il most remote therefrom, as particularly shown in Fig. 3. By this arrangement the intake end of $5 the nonle tube is presented toward the same side portion of the container as that of the discharge end of the nozzle B whereby the liquid contents of the container may now to discharge under the urge of gas under pressure within the con- 4 tsineiwhen the istteris disposed in any position from its upright to a horizontal position when inclined downwardly in the direction of discharge -from the nozzle. l

elbow i4 encompassed thereby, the solder lv1- serving the double purpose of holding the tube in place and ofsealing the opening I2. g

5 Bydishingthe wall Il the outer face is recessed thereby providing a pocket into which the solder l1 is poured so as to form a pool thereof around Lthegeontiguous portion of'the tube thus facilitating effecting connection of the tom wall t, cylindrical side wall .1, vand tol wall 53 and container and also sealing of the opening I2. .The pool of solder thus formed will not only extend between the margin of the opening I2 and the elbow I4 but will overlie the inclined portion a of the dished wall II and will extend along the length IE of the nozzle B seating on .the dished wall between the opening I2 and the margin of said wallfas shown in Fig. 2, thus securely fastening the nozzle in place and insuring against rupturing of the joint between the tube B and margin of the opening I2 y.on

subjecting the nozzle tip to strains as hereinafter described.

'Ihe outer end portion I6 of the tube projects f seritedvtoward` the container,I the operation of the beyond the margin of the wall II and terminates in suitable spaced relation thereto, and formed on this projecting end portion is a circumferentially extending channel or kerf Il spaced `inwardly a short distance from the tipl of the tube constituting the tip portion is tapered internally as indicated at i9 so as to iiare outwardly on its inner periphery from a point adjacent the kerf I8 to the end of the tubeso as to aiord a seat for a plug 20 which is inserted in the outer end of the tube section I6 after iilling of the container as will belater described, and which plug is sealed in its closing position as shown in Figs. l, 2 and -3 by a sealing compound 2I formed of a suitable sealing material such as solder, or cement, or.plastic.

As a means for facilitating breaking oi of the tip portion b of the nozzle a lever C is provided which embodies a capportion 22 formed to Overlie the end wall Ii 'of the container and the extruded portion of the nozzle in closeproximity thereto to cover the nozzle I6, seal I9 and the end wall II and which cap is formed on aportion of the margin 'thereof with a radially projecting tubular extension 23 arranged to encompass or to partly encircle the tip portion b of the nozzle in close engagement therewith. Projecting from the'marginal portion of the cap 22 opposite the tubular projection 23 is a flange 24 which protrudes outwardly from the margin of the wall Il and constituting a finger hold by which the lever C may be readily grasped and tilted upwardly as indicated in broken lines in Fig. 3 to eiect rupturing and breaking oi of the tip portion b of the nozzle. 'I'he cap portion 22 of the lever C in covering the end wall II and the extruded portion I6 of the nozzle and the solder seal l'l serves to house and protect these parts against damage during handling and shipping andv also serves to present a neat and nished appearance: the connection afforded by the tubular extension 2,3 on the cap encompassing the nozzle tip serv- -ing to retain the capvin its protective position over the end wall II of the container without attachment of the cap to the end wall or other portion of the container. s

In the modified form of the invention shown in Fig. 5- ,the end portion of the nozzle is elongated beyond the kerf I8 and after positioning Y a plug or ball 25 in a seated position in the tube adjacent the kerf I8 the extended end portion oi' tbetube is flattened and bent back upo'n itself` to overlie the .end portion I6 and thus provide Alever formed by said cap or handle will be effected from the side of the tip of the nozzle opposite the direction of discharge therefrom whereby the hand of the operator employed in opening the nozzle by breaking oi its tip' will normally be positioned back of the nozzle tip and away from the direction of discharge of fluid from the nozzle.

Inillling and charging the container A, a required amount of liquid is'placed therein previous to applying the nozzle B such liquid being poured into the 'container through the opening I2. The nozzleB in its opened or unsealed conditiony is then put in place and aiilxed to the container by the solder collar 'Il as before described, whereupon gas under pressure is directed into the container through the then open nozzle of the tube until requisite gas pressure is developed in the container. The open end of the nozzle is then sealed by placing the plug 2t or ball 26 in a seated position in the tube as by means of a suitabletool or mechanism and sealed in place as by means of the sealing material 2i or collapsing of the end portionA of the tube. Where the construction shown in Figs. 2 and 3 is -employed the lever C is then put in place on the tip portion b of the then sealed nozzle.

The filled container may then' be supported in any suitable fashion convenient to reach and for ready removal, but preferably the lever C is utilized as a medium of connection to a support D as shown in Fig. l; the outer end of the lever being formed with recesses 2l 'adapted to be engaged by protuberances 28 on a bracket 29 projecting vfrom a supporting plate 80 which plate is fitted with a xilanae 8l on its lower end that is engageable with the rim of the lower end of the container. By this arrangement the con- -tainer may be held in an upright position and mayv be readily detached irom itsy support by pulling it loose from the bracket 29 and iiange 3l.

In the operation of the invention, to eifect extinguishment of tire. the container A is grasped and held so as to direct the `nozzle B 1toward the fire whereupon the lever C is pulled outwardly relative to the container. Initial movement of the lever is resisted by the strength of the portion of the nozzle forming the bottom of the kerf IB such that when suiilcient pressurel is applied to the lever to overcome such resistance sudden cleavage or rupture of the tube along the kertwill occur so that instant removal of the closed tip portion b of the nozzlewill take place thereby suddenly opening the nozzle. The liquid and gas content of the container will then ilow from the nozzle under the urge of gas pressure in the container and may be readily directed toward and into the flre by manipulating the container to point the nozzle thereof in the desired direction.

Manifestly the nozzle tube maylbe formed of any material that is capable of beingr fractured along the kerf It, but practice has shown that to form the tube of results.

a handle 2 6 which is adapted to be grasped and 75 Desirable features resulting from the conbrass produces satisfactoryv Acompositions in the refills.

struction'set forth resides in the fact that once the sealed tip is removed from the discharge nozzle the entire content of the container will flow to discharge without effort on the part of' the operator, and when the container has once been used it may be discarded as it is desirable not to refill the container even though it might be resealed. By not refilling the containers -the the invention embracing such changes in the parts as come Within the meaning and scope of the appended claims.

I claim:

1. In a fluid container and applicator, an enclosed container for fluid under pressure having a dished end wall formed with an opening, a discharge tube leading through said opening into said container and opening adjacent the bottom -of said container, sealing means closing said,

opening around said tube and a sealed tip portion on said tube exterorly of said container; said tube having its outer end portion overlying and seating on the inclined portion of said dished end wall and engaged along the length thereof fil remove said sealed tip, together with a lever attached to said tip and extending across and rearward of said kerf vfor facilitating cleavage of said tube along said kerf; said lever including a cap overlying said end wall and a finger hold flange protruding from said cap and from the margin of vsaid end wall `opposite said tip.

- 3. In a fluid container and applicator, an enclosed container for fluid pressure having a wall at one end thereof formed with an opening, a

discharge tube extending through said opening and having the inner end thereof terminating and opening adjacent to the bottom of said container and having its outer end terminating ex- A teriorly of said container, sealing means closing said'openng around said vtube and fastening by said sealing means, said tube being formed with a circumferentially extending kerf adjacent to but spaced outwardly from the margin of said end wall forming a line of weakness along which said tube may be separated to remove said sealed tip, together with means attached to said tip and extending across and rearward of said kerf for facilitating cleavage of said tube along said kerf; said means overlying and covering the end portion of said vtube seating on said end wall.

2. In a fluid container and applicator, an enclosed container for fluid under pressure having a dished end'wall formed with an opening, a discharge tube leading through said opening into said container and opening adjacent the bottom of said container, sealing means closing said opening around said tube and a sealed tip portion on said tube exteriorly of said container; said tube having its outer end portion overlying and seating on the inclined portion of said dished end wall and engaged along the length thereof by said sealing means, said tube being formed with a circumferentially extending kerf adjacent to but spaced outwardly from the margin of said end wall forming a line of .weakthe latter in place, a tip portion on the outer end of said tube, means for sealing said tip portion to corinne uid under-pressure in said container; said tube being formed with a line of weakness along which cleavage of said tube may be effected. to remove said tip portion and thereby open the outer end of said tube to discharge;

and a-cap extending above the discharge end of the tube having an integral Atubular portion closely encircling saild tip with a margin thereof extending along saidline of weakness.

4. In a fluid container and applicator, a container having an end wall formed with an opening, a bent tube extending -through said opening with 'the elbow constituting the bend thereof located in said opening, the inner end of said tube opening adjacent the bottom wall of the container, the outer end portion of said tube ness along which said tube may be separated to overlying and seating on a portion of the container `end wall extending between its margin and the opening therein, a bodyA ofsolder aflixing the outer end portion of said tube to the underlying `portion of saidv end wall and also sealing the opening' in the latter around the por- Ation of the tube extending therethrough, the

let projecting through an end wall of said receptacle providing v an inner portion within bthe receptacle and an outer portion bent over and lying against the outer surface of said end wall, said outer portion capable of being broken off,

and means to seal the terminal end of said outer portion ofthe tube. l

HAROLD V. SAFFELL.

Images