US1158904A - Chemical fire-extinguisher. - Google Patents

Description

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CHMCL HRE EXNNGUSHER.

APPLICATION man 1AN.19.195.

aented Nw., 2, 19M.

F AKRON, OHIO MAHLGN L. nUnnM-z.

non? A ARIEGE?. GE:

.REX EXTINGUISHER IW OF H10.

oi w in the 'founty Hummm* un i o. inw@ inveneii nw.' undv us` i ov @unas in Chemin-ui irelxtinfgu A tho iiioiimving a specifica* u'vn'aion rcizir. ,v ii'o exing'ui type. und inn use innuomr a hand Qxting quirenienri.

unimi; hier?. VS

discharge, oi' i, suppiy of NJ agentn tinguis n iatod "l tei' cont of die invention if; to i winch is snnpio vnnoivo of gradues ins-uns for indiiiiuisinng liquid ami f3 tune, ziizf The tival long x-x=u^ion sumo. showing tix@ .ui 'w oikwn piuulcaton e January 18,

inn etica,

io provid@ an iw igzuiniier comp ising :i reservoir i for the, exinguishing ugent or iiquid e woii' 2 for :i suitable pressure discharge nuuiiunn suon :is winni-esse@ air.

'Iii-5 reservoir 1, us shown; indudeS an inner uoo oi' lining E3 oi' gnss und un out-e1' vus-ing" i of nietui, closely embracing sind reinforcing the ghisa tube. The Casing 4 pim'iiod with u iongzjitudinniiy extending' Sint (one or more) through which the glass tubo o1' lining may bo vien'od so that' the :unonn of iene extinfmishing liquid conined :1t any Limo within tno ousingj nmy on determined. The exnosd porinn of the. tubo 25 may be provided with graciuntions for convenience in deeiinining die exact announ, if desired.

The casing fr oxtoximliy difende@ i'nn und Your ands m recoive fiangefi heads or closure oups 5 :uid 7, wiiie ho reservoir 2. whioix is made oi suiiinbife nieni, is aso extern-.ally thro ded zit its ends to receive flanged closure. heads o1' ezines Snvnd 9. The gaskets 10. of ien( oi* nher suitable material are. interi; sod between ine/ paws 3 and 4 and :nps und T 'Zo ifo'xn air and liquid tight join'ns, whiio similar gaskets il are interposed iienfonn die rosovfoiif body 2 and sans und 9 for Sinne pin-pose.

In pi'uctic Hi@ heads or caps 7 and 8 may lio integral with euch other sind Connected by :i porion 1&2 forming a valve casing, which is: @Signed to establish connnunication through uiineii. ports 13 and l between the u'iiund extinguishing; agent iesevoirs for the purpose of disc iniging ne liquid und@ u ihlsiiod pressure. ns'teudotinfeudinn' :iii of ho iiezuis (ir cups in position, somo hmu may be brav/:ed to the miseri/oir bodies. it inning only necessary make sufficient oi the ports roulofabie or the. purpose o1 :a 'kieznbugfia (im :mnbiug'f cioansing and the nmin pui-pose .1i/(ing if.) make. the

enough to oiaotuniiy Withsiunil thv iu'uii'nni piossui'vs.

im .Shown Liu. xnmfivoiz' L is pioviiiefi n'iilx u iiisimi'jgo nozz'u intogi'ui with the up (i. und tho vuivs naming l2 un' tho Said now/:in :uw piopoi'iy oox'ed or Chainbercd to roi-olio tngmvd rotary ping vziives 16 and 17, Huid Ciuuuluns boing iio'nd by SCYQW Cups i8 :uul if?. :uni Huid valves having Shams 20 and 01 projecting criminally through said caps i, orvoii's; sii-on" at. its' and provided iwith crank arms 22 and 23 connected by a link 2l, whereby said valves are adapted to be opened and closed in unison and in cordination with each other. The stem of the .valve 20 is also provided with an operating handle or lever 25 whereby the valves may be conveniently opened and closed. The reservoir 2 is provided with a gage 26 whereby the amount of air stored under pressure therein may be determined at all times. The reservoir lis adapted to he charged or replenished with the extinguishing` liquid through an inlet 27 in the cap 6, which inlet is normally closed by a plug 28, while the cap 9. of the reservoir 2 is provided with a suitable construction of check valved inlet 29 for the supply of compressed air thereto from any suitable source. l

Arranged for operation within the reservoir l is a discharge plunger 30. This plunger comprises a hollow body. of a diameter to snugly fit the interior of said reservoir, said body having a eoncaved inner or rear face 31 for the proper impingement andconcentration of the air thereon. The interior of the hollow plunger is filled with a suitable sealing and lubricating liquid 32. such as glycerin. this substance being used because oli-its Vnon-drying quality, and its lubricating efliciency, and alsoV because it is unaffected b v the preferably employed extinguishing liquid. carbon tetrachlorid.

The body wall of the plunger is formed with an annular groove 33 communicating with the interior of the plunger body through an annular series ot fine perforations 34, through which thel glycerin gradually discharges into the groove in which it is retained, thereby lubricating the surfaces of the plunger and reservoir and at the Same time forming a seal by which leakage of the air past the plunger into the liquid containing space of the reservoir will be etl'ectually prevented. The device may be provided at a suitable point with a bracket 35 having a slot of ay key-hole-shape or other suitable form. by which the device when not in use may be suspended Al-rom a wall or other suitable support.

When the device is charged fior use, it will be understood that the hollowplunger is arranged behind the column. of extinguishing .liquid and between the same and the cap or head 7. and that the valves 16 and 17 are closed to prevent the escape of air from one reservoir to the other and the leakage of liquid from the extinguishing liquid reservoir outward through the nozzle. lVhen. however, a fire breaks out and it is desired to extinguish the same. the, device is removed from'fits support and held in the hands of3 the operator so as to point the nozzle 15 in the direction of the blaze and the valve handle is then swung lorwarffljv to open the 'alves to a greater or less degree, whereby a greater or less quantity of the extinguishing liquidl may be discharged from the nozzle against the flames, the construction thus heilig such that only the amount of liquid necessai to extinguish the lamesneed be discharged, thus preventing vaste of the extinguishing substance. As

.the extinguishing liquid and pressure fluid are also kept separate. it is evident that the device will always be in condition for use np to the.`time its contents are fully discharged. and thatY contamination or deterioration of the extinguishing liquid can notpossibly occur. .\s the hollow plunger', which forces the liquid outward under the action of the compressed air, is lubricated bj an element which kis at the same time a sealing medium. and which will last for an indefinite period without gumming or drying, it is evident that the liquid reservoir will be at all times maintained in a highly efiicient state or condition to perform its intended function. ly making the reservoirs separate and iniilependent. it is furthermore evident that the liquid reservoir need not have to withstand an extremely high pressure with liability of explosion, leakage or other objections. while at the same time the provision of the controlling valves enables thorough coordination between the amount ot' fluid pressure supplied and the amount ot' extinguishing liquid discharge to be governed and controlled to an exact degree. In order to hold the valves positively seated against leakage. to render them self-grinding and proof against leakage, and to insure their certainty of adjustment `as against leakage, I preferably make each valve of less length than its chamber or casing and hold the valve under the pressure of a spring :'56 whose tension may be regulated by the cap 18 or 19, by which the valve will always be held snugly within its seat. I.

lt will be seen from the the foregoing description that my invent-ion provides a Vhand or portable Fire extinguisher. by which an extinguishing liquid of the character set forth. to wit, carbon tetrachlorid, may be stored and employed in an etfective manner, and that a simple and compact form of extinguisher is provided which is especially designed for use upon automobiles, motorboats and other craft and elsewhere, to enable av fire. especially one starting from the ignition otl gasolene or other volatile hydrocarbons or fuels. to be readily, easily and quickly extinguished. v

Other advantages and conveniences will be apparent from the illustrated disclosure and foregoing description to those versed in the art.

l. A tire extinguisher including a reservoir for an extinguishing liquid, a reservso Voir for a iuid pressure medium arranged in axial alinement with the irst-named reservoir, a connection uniting said reservoirs and provided with a passage for the flow of theffluid pressure means from the fluid pressure reservoir to the liquid reservoir, an outlet leading from the liquid reservoir, controlling' valves in said connection and outlet, a -plunger within the liquid reservoir between the source of pressure and the liquid, and means for simultaneously and cordinately operating said valves.

2. A re extinguisher including liquid and iiuid pressure reservoirs arranged in 'axial alinement, a valved outlet from the liquid reservoir, avalve connection between 'said reservoirs, a floating piston within the liquid reservoir between the liquid and the source of pressure, said piston being provided with means for lubricating itsperiphery and vforming a sealing connection between the saniegand the wall of the liquid supplying fluid pressure to said reservoir,

valved controlled means governing the discharge ofliquid from the liquid reservoir and the supply of fluid pressure to said reservoir, and a plunger within the reservoir comprising a hollow body having an annular groove and perforations connecting said groove with the interior of said body, the latter having a charge of a lubrieating and sealing liquid.

In testimony whereof l ailiX my signature in presence of two witnesses.

. vMAHLON L. DUNBAR.

Witnesses C. C. HINns, BENNETI S. JONES;

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