US2325625A - Fire extinguisher means - Google Patents

Description

1943- D. M. MYERS FIRE EXTINGUISHER MEANS Aug.

Filed Dec. 12, 1940 INVENTOR. DA v 10 lV/o F/"A 7 MYERS warnings, 1943 I V sum "05.16. 01 sufan comameiew 1 Still another object of the. invention isto pro-1e vide an extinguisherwhich will eliminate the 1 inconvenientnec'essitv-ot-refllling, as in the case" or the1 .usual type oi fire extinguisher after itsj 1- chargefoi' fluid is exhausted,- the novel attachg ment'requiring merely the throwingaway'oi' the; g

j 7 empty can and theappli cation of the attachment 1 1 rot-providing pressure thereon.

,, Withe I V V h 1 1 a ovel per member d s gu ep e-*- h 1 Ithas been found that after more 013 lessen 1 tended-periods oi11time certain manuallv-joper- 1 ated pumping types of fire extinguishersocca sionallyistick and bindsui'noiently to render the 1 extinguisher useless in an "emergency; audit is 1 anothercobject ofthe invention. to provide a fire 1,' it extinguisher attachment having no moving parts in-the liquid, thereby eliminating much oththej usual difliculty resulting from corrosion otmov-y toa new; and full can.

1 The invention hasior an object, also; tokpro-Y vide a construotionwhlch will prevent spillage,

1 as well as evaporation of the contents of the can and also contact of the liquidwith the means 1 The novel 'attachment, moreover, obviates. the purchaseof an expensive and costly container uf orm ing part of the usual type of hand-operated, 1 chemical fire extinguisher, it being necessary 1 merelyto purchase the chemical in an ordinary 1 can and attach the novel device thereto to convert'the samefimmediately into an eflectiv e flrlelj' extinguishenf A 11 1 1 1 1 *1 In carrying' outthe inventi n} the usual seal; ing cap whichis threaded on the neck of. a carrot L the liquid isadisoarded and there is jsubstituted exie n nreane suen as billlilfii? icing container the accompanying drawing, 1 in v'vhic-hz1. 1

{ am cap member dear 'iiecitofit o'ver I ,tin snerneer anemeiudeeaneeq portionlto seal 1 the 9mm "eii ahcl ithrbu'gli which fhead poiftiofi" A mi -trier I through said pine and termideer! ctio I Fig. 1.:is a plan-view andFig; 211afronteleva- 1 tion, partly in vertical section, of henovel attachment appliedtoacan. 1 .".'Reiferring1to the drawihg;:the novel attach-.

ment isfshown in the nature of a oapmember 33 threaded'tofit onthe correspondingly threaded neck 34 of a container 30, @the latter embodying the usual tin-plate can of quart or larger size eontaining 'the'desired 'liquid tobe discharged, for example, a fire-extinguishing liquidor chem; 1

- ical1 such as'goarbon tetrachloride; The usualcap- (not shown) furnished with such can is tobedis- E \carded and replaced by the cap 3,31 which' is -j 1 screwed down toform'an air-tightjoint, *caphas associated with it either integrally. or 1 1 a s'a separate element a head'portion 32im'medi- 1 ately beneaththe topof the cap. The said head 11 portion and cap are bored through to aiford pas? sages for receiving; an air pipe 31 and an. ejector pi pe 38, respectively. These pipes mayflbe $01 11 1 der'edtothe closure member orbe otherwise se- 1 cured thereto to effect a sealedjoint therewith.

1'1Theformer i eis extends merely into the is ofalength to extend into the container 301 substantially to the bottom thereof T for deliver- "ingliquid from the container when air-under 1 1 pressureis applied through the pipe 31. The discharge is eflectedthrough a nozzle; 3| at'the ader ressure inte 1 V "efiiectof pipegex-i tenas sutem iell y te memormm oi ithe -con 1 ging the now-1 th air p pipe} outer end of the pipe 38gthenozzle portion slopr ing upwardly to provide for drainage of the liquid back into the containerafter the extinguisher has been in use. I V 1 r V In order to prevent flow of the liquid into the bulb29, which might destroy or damage the same,

a hand-operated 'va1ve28 is provided in the pipe 31between said bulb and the cap; and a' closed tip or the like 25 is fitted over the nozzle to seal the'latter when therextinguisher isnot-in use.

When it is desired to operate the extinguisher;

tip 25, of course,is to be removed from the nozzle and the valve 28 isturned to permit air from the bulb 29"to enter the container through pipe 31; Anarrangementis indicated, furthermore, for

will the bulbbe contacted by the liquid at any time; and leakage and/or evaporation of the conremoving temporarily the tip for the nozzle automatically with the opening of the valve in the Thus, tip 25 1s swiveled to the I endof a stiff wire or link 26 which 'in turn, isv

swiveled 'to the operating handle or armCZTQf In I this embodiment,

cap -33 and isinthe; nature of a flanged plug fitting into the neck 3443f thecontainer and sup:

ported on its rim; .Qverthis plug is thefiange 35 of thecap so vtliatWhran the ,latterlis screwed downpn'the neck 34 a tight seal will be afforded a for the container. {The central opening "38 in the 7 top or flange portionof thecap admits the pipes 31 and 38 to the head portion so that this portion;

'.Liq idreiectingifmeans and-substitute closure With the arrangement rhereinbefore described,

' it is possible to convert quickly an ordinary'can of the liquid into a very effective fire extinguisher,

with which it is possible to throw a stream some 15 feet from the container upon compressing and working the bulb in'the usual manner to supply air under pressure over the liquid. When the contents are exhausted, it is necessarymerely to unscrew the attachment and apply the same to a further-can. a r.

The attachment may be constructed such that there will be no moving ,parts normally in contact with the liquid and subject to corrosion, nor

tents; during storage is insured against in the- ;provision ofthe sealing means associated withthe 'pip'esri The novel attachment is of inexpensive construction and is readily and quickly applied without the use, of any tools. r ;I' claim:;

, member for th sealinggqap of a container, adapte ed for dispensinga fire-extinguishing,:liquid from, thesaidcontainer-through-the neck thereof, comprising a cap memberdesigned to ,fitoverthelsaid neck and including a head portion, an air pipe extending through, said head' portion having means eXternal the container for introducing, air

underpressure therein, a nd -,an; ejector pipe ex,- ten-ding through the head portion 'substantially; to;.the bottom'of the containenand terminating externally thereof in a nozzle for discharging the I contents of the container when air: is-introduced :through the; alr pipey a: ,cap ,member normally sealing the nozzle anda' valve element normally with the pipes need not rotate in sealing thecon:

' tainer, it being. necessary merely to screwdown the cappcrtion.tolforoethe flange of plug or head 7 portion j32 1tightly 5 against the. rim" of neck 34.,

sealing ,the air 1 pipe, 1 together with means conmeeting the caplandyalve element fpr removing; simu1tanQ11S1y:the'cap withthe opening of; the

" 15min More MYERS?

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