US1866746A - Fire extinguisher - Google Patents

Description

July 12, 1932. Q BORSE-rn 1,866,746

FIRE EXTINGUI SHER Filed Dec. 15, 1928 2 Sheets-Sheet l 4` is Q umnumn 11+ NA \'\\\\v/A\ 2 In Verl/ZLT.'

July 12, 1939. G. BoRsl-:TTI

FIRE EXTINGUISHER Filed Dec,

l5, .1928 2 Sheets-Sheet Patented July 12, 1932 UNITED, STATES.

PATENT OFFICE -A' GASPARE Bonsm'rr, or BIELLA, ITALY Fmr. :cxrmaulsm Application led December 13,1928, Serial No. 325,882, and in Italy January 10, 1928.

The present invention relates to fire extinguishers, and it comp aises a device of that class or character in which the delivery nozzle maybe adjusted in the -tank to deliver at will an upward or a downward jet at the time of use.

The invention further comprises an extinguisher in which a single member provides both lthe hammer intended to open or break the reagent container located in the tank and the nozzle for distributing the fire extinguishing jet.

A further object of the invention consists in a lire extinguisher of the above stated construction'in which a single member is used for mounting in position the reagent-con-` tainer support and the combined nozzleand hammer. l

The invention also comprises means for locking said hammer against undue operation and for locking the nozzle in either of its operative positions and for preventing it from being forced out of the apparatus.

In the accompanying drawings:

Figure 1 is a central section of a fire extinguisher according to the invention in inoperative position ready for use;

Figure 2 is'a sectional detail on an enlarged scale showing means for mounting the combined hammer and nozzle;

Figure 3 is a fragmentary transverse section on line 3-3 of Fig. 2.

Figure 4 is a central section of a'modiied construction.

The extinguisher comprises a tank 1 having the shape of a cone and provided at its mouth with a collar 2 in which is seated the ianged end 4 of a tube 4 which extends within. tank l and encloses a bulb 5 of glass or other suitable material containing a substance capable of generating a gas when said bulb is broken and the contents thereof mixed with the charge contained in tank 1. The tube 4 has perforations 4 in its side wall and an orifice 4 in its bottom wall 4.

Said tube 4 is'held in position by means of a plug 3 screwed into said collar 2, a suitable seal packing 14 being provided.

In plug 3 is mounted to slide, by means of a packing gland 6, an elongated tubular nozzle 7 which extends within tube 4 and reaches a point adjacent to bulb 5, said nozzle 7 having an outlet 8 outside of said tank and inlet ports 7" inside the tank for the delivery of the charge therethrough.

- The portion of nozzle 7 located within tank 1 carries a stop member consisting of a collar 11 adjacent ports 7 and the portion of said nozzle enclosed in packing gland 6 is provided with a tapering groove 7 which is embraced 60 by a resilient fork 15 engaged in a transverse slot 16 formed through gland 6, this arrangement preventing the nozzle from unduly entering the tank 1 by the eliect of an accidental blow on its outer end. At a pointV ado5 jacent its outlet 8, said nozzle 7 has an additional groove 9 adapted to be enga ed by said fork 15 after thenozzle has bee driven into tank 1 at the time of use.

Fork 15 has a chain 17 or other device 70 connected therewith for effecting its removal as hereinafter described, and tank 1 is provided with a handle 13 and may also have a suspension hook 18.

In preparing the extinguisher for use, plug 3 is removed and then the perforated tube 4 is withdrawn from tank 1; afterwhich a charge consisting of sodium or other carbon. ate and water is poured into tank 1.and then a bulb 5 containing sulphuric acid is in- 80 Serted in tube 4, the descent of said bulb in the tube being controlled and damped by placing a finger over the bottom orifice 4, said bulb finally resting on wall 4" a Then tube 4, with bulb 5 in it, is reinserted 85 in the tank and its flanged upper end 4 is seated in collar 2, and packing washer 14 is located in position. Plug 3 having nozzle 7 slidable therein is then put in position and screwed home in collar 2, with nozzle 7 ex- 90 tending into tube 4 and locked against motion by fork 15* engaged with the tapering groove 7 in said nozzle.

At the time of need, the extinguisher is grasped by the handle 13 and the end portion 95 l or tip 8 of nozzle 7 is struck a sharp blow against a resistant body the sloping wall of groove 7- overcoming the resistance of the v resilient fork 15 so that the nozzle moves inwardly of tube 4 until its end strikes bulb 5 100 to ensure the-delivery of the full charge in an upward direction.

- In the event the charge is to be directed downwardly, fork 15 is removed by a pull on its chain 17 immediately before use and thereafter the device is inverted and nozzle 7 is struck as above described. The nozzle is thus driven inwardly of tube 4 to break bulb 5 and then is forced outward again by pressure developing within tank 1, its groove 9 being no longer engaged by fork 15 which has been removed as described, until its collar 11 engages the packing gland 6of plug 3; the orifice 7 of nozzle 7 thus being put in communication with the small end of the tank which is lowermost when the apparatus has been inverted to eject the full charge downward under the pressure of the gas generated. l

The described extinguisher has the advantage that a single member is used to form both the nozzle and the hammer intended to break the reagent container, so that a single opening only is provided in the tank which may be sealed by conventional packing means, while no added body or receptacle has to be welded on the tank to enclose the hammer or similar part. However, the invention is not restricted to the use of such a combined nozzle and hammer, its scope being dened by the appended claims.

, In the construction of Figure 4, the nozzle 7 and its mounting and operating means are similar to those described in connection with Figures 1-3, said nozzle having at one end, before, a tip or outlet 8, and a groove near said outlet to receive a removable locking member 15 inserted through a slot 16 in gland 6. The nozzle is mounted to slide through plug 3 which is secured at the mouth of tank-1, and it is 'provided at its lower or inner end with inlet ports 7 and with a stop 11.

Inthis construction, however, the said nozzle is ot utilized to break the reagent bulb 5, se rate means being provided for Ithis purpose.

.As shown, the bulb 5 is located in a perforated receptacle 20 having a perforated tubular extension 20 that projects upwardly in the tank 1 and a flange 20 that abuts against a depending nipple 22 on the tank bottom; an apertured cap 23 being removably tted on said nipple to introduce the charge into said tank and also to introduce the bulb 5.

Cap 23 acts both for holding said receptacle 20 in position and for closing the nipple 22.

A hammer 24 is mounted to move through the aperture in cap 23, and it has an internal stop 25 preventing it from being withdrawn from said cap, as well as an outer striking head 24; said hammer being intended to strike and break bulb 5 when driven into.

tank l'. v

When the hammer head 24 is struck, hammer 24 enters tank 1 and breaks bulb 5, thus 'causing the generation of gas and the operation of the extinguisher.

The nozzle 7 may be held in the position illustrated in Fig. 4 when an upward jet is required, or the fork 15 may be removed asv above desired to release said nozzle and permit it to be moved outwardly into the posi,- tion shown in dotted lines, with the inlet ports 7 adjacent the plug 3', when a downy ward jet is required.

Tank 1 has preferably the shape of a cone having a generatrix parallel with nozzle 7 to secure a full exhaust of the charge.

The bore of plug 3 through which nozzle 7 moves is smaller toward collar 11 than the collar itself, but is of larger diameter than the nozzle, to prevent said collar from forcing the material of said plug too tightly .against the surface of nozzle 7.

l/Vhat I claim as my invention and desire to secure by United States Letters Patent is: 1. A fire extinguisher comprising a tank to contain a fire-extinguishing charge 'having a collar secured in its mouth, a perforated support in said tank having a flanged edge removably fitting in said collar,a plug mounted in said collar and engaging said flange to hold the support in position, a reagent container in said support, a nozzle mounted to move through said plug and said support and having outlet means and a groove adjacent saidV outlet means and also havin inlet means, stop means on said nozzle ajacent said inlet means for engaging said plug, and

a resilient member removably mounted in said plug for engagement withsaid nozzle groove.

2. A fire extinguisher comprising-a tank to contain a fire-extinguishing charge havinfr a mouth, a perforated support in said tan having a fianged edge removably fitting in lsaid collar, a plug mounted in said collar -and said first-named groove, and a resilient member removably mounted in said plug for engagement with either of said nozzle grooves.

3. A fire extinguisher comprising avtank to contain a fire-extinguishin charge having a collar secured in its mout a perforated support in Lsaid tank having a anged edge removably fitting in said collar, al plug mounted in said collar and engaging said flange to hold the support in position, a reagent container in said support, a nozzle mounted to move through said plug and said support and having outlet means andy a groove adjacent said outlet means, and also having inlet means, stop means on said nozzleadjacent said inlet means for engaging said plug, said plug' havingl a recess larger than the diameter of said nozzle but smaller than the stop means carried by said nozzle, and a resilient member removably mounted in said plug for engagement with said nozzle groove.

4. In a fire extinguisher comprising a tank to contain a fire -extinguishing charge, a frangible container for a reagent, a perforated support in said tank for said container, and means for fracturing said container; a nozzle mounted to move through the Wall of said tank and having outlet means outside of said tank and inlet means near its end inmeans outside of said tank and inlet means near its end inside of said tank, said inlet means being adapted to be carried adjacent either said mouth of said tank or the end of said tank remote from said tank mouth b shifting said nozzle with respect to said tank, lremovable means on said tank for lockin said nozzle in its position with said inlet means adjacent to the end of said tank remote from said tank mouth, and means on said nozzle stopping the same in its Withdrawn position with said inlet means adjacent to said tank mouthI after said removable locking means .has been removed.

6. A fire extinguisher, comprising a tank to contain afire extinguishing charge and having a bottom and a mouth, a plug closing said mouth, a frangiblecontainer for a reagent, a perforated support in said tank for said container, a nozzle mounted to move through said plug and container support, said nozzle having outlet means outside of said tank and inlet means inside of said tank,

said inlet means being adapted to be carried adjacent either said tank bottom or mouth by shifting said nozzle with respect to said tank, means on said plug resilientl engaging said nozzle in ino erative position in front of said frangi le container, means on said nozzle cooperating with said engaging means to lock said nozzle with its inlet adjacent to the bottom of said tank, and means on the inner end of said nozzle for stopping said nozzle with its inlet adjacent to said tank mouth.- y

7. A fire extinguisher, comprising a tank to contain a ire extinguishing charge yand having a bottom and a mouth, a plug closing said mouth, a frangible container for a reagent, a perforated support in said tank for said container, a nozzle mounted to move through said plug and container support, said nozzle having outlet means outside of said tank and inlet means inside of said tank, said inlet meansbeing ada ted to be carried adjacent either said tank ottoni or mouth by shifting said nozzle with respect to said tank, a resilient fork removably mounted in said plug, said nozzle having at a point intermediate its 4length a tapering groove engaged by said fork in inoperative position of said nozzle in front of said frangible con, tainer, said nozzle having a groove adjacent to its outlet to cooperate With said fork to lock said nozzle with its inlet adjacent to the bottom of said tank, and means on the inner end of said nozzle for stopping said nozzle with its inlet adjacent to said tank mouth.

8. A fire extinguisher, comprising a tank to contain a lire extinguishing charge and having a mouth and a bottom remote therefrom, a plug closing'said mouth, a nozzle mounted to move through said plug, said nozzle having outlet means extending outside of said tank and inlet means inside of said tank, said inlet means being adapted to be carried adjacent either said tank bottom or mouth by shifting said nozzle with respect to said tank, a perforated support in said y tank inthe path of said nozzle,'a frangible container for a reagent in said support, means g for locking said nozzle in an intermediate inoperative position in front of said frangibley container, said nozzle being operative to fracture said reagent container when driven into said tank and to distribute said charge, and means for selectively stopping said nozzle with its inlet means adjacent either said tank bottom or mouth.

9. In a fire extinguisher comprising a tank to contain a fire extinguishing charge, a frangible container for a reagent, a support in said tank for said container, and means for delivering said reagent in said tank; a nozzle mounted to move through the wall of said tank and having outlet means outside of said tank and inlet means near its end inside of said tank, said inlet means being adapted to be carried adjacent either end of said tank by shifting said nozzle with respect to said tank, and means for selectively stopping said nozzle with said inlet means adjacent to either end of said tank.

In testimony whereof I aix my signature.

GASPARE BORSETTI.

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