US1377431A - Fire-extinguisher - Google Patents

Description

R. PFEIL, JR. FIRE EXTINGUISHER.

APPLICATION FILED MAR. 2|Y 1 939.

Patented May, 10,1921.

ing medium and its discharge within an oil-11 iestorjage tank, freight-car or other structure, fl

and. said, invention more particularly; per tains to anautomatic release of said me-l v dium, as aresult of a change'in the-pressure v of air orother gaseous-fluidin the structure.

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Toalluzkom itvnzagy cohcem I Be iteknown: that LRUDOLPH the. following is a full", scription thereof,

' Myl invention relates toautomatic j-libera tion of a normallyconfined fire-extinguish- My invention is herein shown. applied in connection with an oil-storage'tank and a chemical fireextinguisher that discharges in said tank. In such a tank the space between the oil level and the'tank-roof isfrequently a flar1n IlOtOh'lIl a.plston like seal-stop '17 supporting a seal 18 ofa chemical conveyer filled by a gaseous mixture of a'highly explosive character, and fire in the tank is generally caused by lightning, but no matter from what cause'iignition occurs, it willre sult in an explosion, if thegaseous contents of said tank are of an explosive mixture, and it is itpUI'POSG of my invention to utilize the explosive force to release the fire-extinguishing medium aforesaid. Obviously it is of the greatest importance that there be a prac ticallyinstantaneous release of the fire-ex tinguishing -medium the instant ignition occurs in the tank, to thus preventthe fire I fromgaining headway sufficient to heatthe uppermost portion of the oil and cause its rapid volatllization.

i Figure 1 of the-accompanying drawings V guisher. My invention is adapted for asso-' represents a sectional view of a fragment of an oil-storage tank, a chemical fire-extinguisher therewith partly in section, and means in accordance with my invention for an automatic operation of a control mecha nism ofthe extinguisher, in the event of ignition in the tank, the sectionalparts of the view being on the plane indicated by line 1---1 in the next described illustration, and f Fig. 2, an elevation partly in section as indicated by line.2 2 in Fig. 1.

' Referring by numeralsto the drawings, 3

indicates the body and 4 the roof of an I" spjec'i'fiwtidn f Letters semi mounting said roof.

atented May 10,

Appliea tionjfiled March 21, 1919. seen No. 284,118.-

ciation with a control mechanism of theex- I A tinguisher shown, or with .the mechanism controlling thedischarge ofanyxother'such extinguisher applied to oil-storage tank:

orother structure, butnoclaim is made to the'con'struction of said extinguisher specifi-y The control mechanism of the extin guisher is showrr-as embodying 52L. plug 6 having a shouldered stem" 7 extending through a chambered fitting'8 incasing said plug-outside ofthe' tank and ra lift-rod 9 is fastened to a collar 10 fast on the, exposed portion ofthe plug-stem; The plugis .astraddleof a rod 11 in a pipe-12 extending through the forward end of the chemical d stributing no zl zle 13 ofithe extinguisher, th1s nozzle being partly within the oil tanln A, ferrule 14 on the pipe12 abutsthe plug.

6 within the chamber-fitting 8, and said rod is coupled to a shackle 15 having abevelpoint of a bolt element 16 thereof engaging pipe 19 in the cylinder 20 of the extin} guisher, said cylinder being charged with fluid under pressure. Within the oil-tank another ferrule 21 on the pipe 12'abuts a 7 it tube 22 sweatedon a fusiblesleever23 ens gaged by the rod"11, and a nut 24 run on the screw-threaded inner end of said rod,

ible -device,vthat.extends through'the flange a 27 and roof l ofithe'tank. The cable is run on asheave 28 and through guides 29 surmount ng'the tank-roof, and an end of said: u

cable is fastened toa bracl'ret 30also sur-' A, sectlon of the tank-roof may be a hinged door 31 or other closure for an opening therein, and one vof theguide brack-' sets 29; for the cable 26 is shownon said" closure.

Therod 9 may be actuated "by hand ton ably secured against unauthorized use, Hpwever my invention is not,spec1fic to any peculiar manual control ofa fire-extinguishliftthe stem and the plug 6 therewith, the resultbeing'a release of the fire-extinguishing medium, and in practice said rod is suit-- grate the members22and23 of the fireextinguisher apparatus herein shown and thus T the extinguishing medium wvill become "ef' fectiyeg but the fusible controlof a-fire-ex tor-an opening therein with such control; of

- such an apparatus-regardless-of thespecifiq detail ofsaid control 7 sion mayieither liftthe closure 31; thereby? causing a; pulling action on the cable 26 and If an explosion 'd'eto' ignition" olf jgases g gaseous fluld in the structure due to varlous causes, said meanebemg associated with in the tank occurs, the force of such ,explothestem7 to providefor a discharge of the ifire extinguishing medium into said tank,

or if the explosion is of such aviolen't character-as to: displacethe e'ntire tank-roof,-

'fthe'same result will be attained. The-roofs. of =oil-storage tanks are purposely" ilig'htly attached to the lls of said tanks to permit of their blowing 01f; whereby rupture of s'aid walls is prevented and a leaking away of the burning oila'voided If the mixture. or

gases above the o l is of a nO XP Q *tingui'sher a charater'and the liquid contents ofthe tank are ignited, the resultant heat will disinteenti'c m.

pparatu's is no .part ofmyli'n-f v I g Wisconsin; 7 l i In accordancelwith my invention in its 'RUDOLPHPFE IL',

broadest Various 7 means may; be em ,ployed to effect the liberation of 'afire-extinguishing medium into a'structure as the result ofan'appreciable expansion of air or some .displaceable portion of said structure.

I claim: Y

The combinationwith aj'storage compartment for combustible material including side walls and aroof, of a-fire extinguisher, said roof hav ng an opening the'rem, a cover hingedjto said roof and normally coyering said opening, means for controlling the discharge ofexti'nguis'hing fluid from said fire extinguisher, an actuating cable having one end secured to said controlling meansand the other end secured tothe roof, the intermediateportion of said cablepassing over said cover member, whereby the" raising of said cover-member will actuate said control 7 ling means. t.- In testimonygthat l'clairn the-foregoing I have hereunto set myhand atfMilwaukee';

in the county of Milwaukee and State of

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