US1243733A - Fire-extinguisher. - Google Patents

Description

Patented Get. 2", 1917.

GRIFFHH.

FIRE EXTINGUSHEH.

APrfucmun FILED MAR e. i914.

aci

BENJAMDLM; enlrmfrn, or rxmmsnunen, fmmsimvnin, ASIS'IGNQB. momrevmn LAMP, BRASS ateniese COMPANY, or Prr'rsnunen, PENNSYLVANIA, A'conionbk w 'non or NEW JERSEY,

miem-i3.

To all whom z'tfmay concern;

B e it known that '.l., BENJAMIN M. GRIF- 'Jtfrna 'citizen oit the United States, and resident of Pittsburgh, in the county of Allegheny and Stateof Pennsylvania, have invented certain new and useul Improve mente mvFire-Extingulshers, of vwhich the following 1eV a specification;

One object ofthis invention is to provide a .compact portable fire extinguisher with Aimproved' means 4for Storing and delivering compressed air to the fluid container for discharging the chemical when the" extinguisher is in use. The invention. "ieprefer-l ably embodied in a cylindricel tanlflilc structure which ie partitioned to provide an {LII fluid chamber, and further pfurpceex-icto i so construct thecyhnden or shell'. acto pirom vide Aan external cavity in Wliichfthe valve,

for' controlling communication "between, the air and 4i'luid chambers is located and Sprotectzed, i

A;iurther purpose is tc'provide improved prinzip' means for charging th together with an improved 'removable Ivalveconnection at the exterior of the cyhnderjor! casing for ectablishing communication be- ,tvveen the pump land chamber.'

'.,Another object of the 'invention is to. so. arrange 'the 'chemical discharge tubeas to cause itfto`alwaye project 4into the lowest porticnfof theV bottoni of the chamber and' all' of the contentent thechaim thereby cau-SG A n'the accompanying drawin s, Figure isifverti ,-ection of a portab e re extinguisher' constructed ,1 1n' accordanceA with-- and embodyiigsthe' several improvements of. the

" preeentin'vention, Fig. 2 v1s a sectionalplan' section'aldetail o thev detachablevalve con-V nectilnsbetiveen the pump and theair cham# ber;4 t

body or shell of the 'extinguisher i's 'partitioned between its ends at 2 to separate the upper 'or main chamber 3-wh1ch holds the fluid chemical from air chamber 4 at the compartment or chamber beneath the l connecte 'air chamber 4 with t e upper por- 'e vair 'chamber,-V

Referring to the drawings, the cylindrical Finn-EXTINGUISHER.

Specication of Iletters Patent. Patentgd 091;, 23, 1917, ,apgiiqamii inea name 6,1914. sentii. 522,860.

ball and socket joint the lower or inlet end of the tube gravitctes to' the'lo'west portion ot chamber 3 when the extinguisher is held in inclined position, theebyinsuring comlete draining of the contents ofthe chamvert I This movement of tube 7 may be facilitated byweighting-the free portion thereof, as indicated at 9. i

The body orshell' contracted circuin:Eere'ntially,

re erably in' as the plane of .pertitionZ'as' in icated at 4'10, v

and thepurposefof theexternal depression? orreceesA thus formed 'in the 'body is to pro' -vide spacerin which"certain operative parte, may be located and' protected from injury and at the.. Sametime be readily acceesible.. Depression '10 is bridged by a vipe 11 which vtion ogcheniical chamber 3,4 and a valve V12 Vfor this pipe is located in depression l0 and lprotected although conveniently `4 bottom 1,4, andgif, due to longl Standing or 'other eause,.the airfpressure becomes: de-y pleted,'a hand 'pump is provided'for replenishing the same. 'The pump here shown is4 of the usual cylinder and-piston type, the pump cylinder 15 being, arranged Withinnnd extending longitudinally of chamber 3 and outwardly through crown 5 while itslovver i end extendsintodepression 10, as indi'cated l at l5. 16 is the plungeryl'l the plunge rod, and 18 the operating handle which is located at the topof the extinguisher body .and in position for convenient manipulation f Withthebodytstanding upright on the floor or-other support. Y i

vlVith the pump thus located'it is cntrely out of the way, no portion thereof fprdj'e l ,in such manner as 'to cause lthe extinguisher I to. occupyneedless room. -Al'so, 'wlthhfthevI Pump Sion '10 provides space for the outwardl removable connection between the pump c Yinder/and air chamber 4, this connectionV being in the form of a fitting' 19 which at itsA upper end .is` connectedby union 2O with pump cylinder extremity 15', and at, its' lower end by'union 21 with inletv tube 22 secured in the wall of chamberfl.V Within ilt- '.ting 19de air iS forced by the pump into the air chamber. This valve is of usual tire valve'coni the check valve 23, past which eng loaned is described. the' bedyfdepng-,i i 1? struction for which no novelty is claimed, excepting as -located in fitting ll), and thus,` readily removable and accessible as may be necessary for adjustmei'it or repair.

The operation of portable fire extinguishers of this general class is so well understood as t0 require little description. Chamber 2i is charged with a suitable fluid chemical, for instance tetrachlorid, and chamber 4. is

charged. through inlet 13 with air under suitable pressure. When the extinguisher is to be put into service, valve 1.2 is opened thereby admitting conmressed air to the top of thefluid body in chamber El and .forcing the fluid out through tube 7 .inclination of the extinguisher body in any direction causes the discharge end of tube 7 to move to the lowermost part of chamber 3 and thus insure complete draining of its contents. If

through long standing the air pressure in chamber 4 becomes depleted7 or .if from any cause it is insuflicient to discharge all of the chemical. in an ellicient manner, the proie-:nrc may be .immediately rcpleniehed by the Iir pump. Also, the pump is available for relenishing the air I ressurc at ,intei'wils if 1t is desired to taire the precaution to maintain the extinguisher in a fully e'flicicnt con dition regardless of lapse of time, this with- 80 out removing it from thc position or station Where it is kept ready -fior use.

'I claim: j ,i

l.A A portable lire extinguisher consisting of a tank provided with two chambers arranged one above the other with the uppermost chamber adapted to contain a fire ex tinguishing fluid and the ,lowerniost cham'- ber adapted to contain air under pres e, the tank formed between its ends with an 40 ternal indentation, a discharge 'tube for the fluid chamber open tov the lower portion ci the latter, an air inlet for the air chamber, and avalved tube bridgingr the indentation i L alid extending from the air chamber to the 4t upper portion of the fluid chamber.

42. A portable fire extinguisher comprising s. tank artitioned to form an air' chamber at one en and a chamber for a fire extinguishing fluid at its opposite end, the tank formed o0 between its ends with an external indenta 'tion, a4 pipe bridging the indentation and connecting the two chambers, and a. valve for the pipe with said valve located in the tank indentation.

3. A portable fire extinguisher comprising a tank partitioned between its ends to form an air chanil'ier'at its: lower end und a charnbcr at its upper end for confining a lire extinguishing fluid, the tank indented externally between its ends, a pipe bridgingthe indentation and extending from the air chamber to the upper portion ol the fluid elia/miner, a valve for the ipe with said 'valve located in the tanlc imentation, an outlet for the fluid chamber, anilla tube extending 'from the outlet into close proximity to the bottom of the fluid chamber.

l. A portablefire extinguisher comprising a tank having an air chamber at one end and a. chamber at its opposite end for confining a fire extinguishing fluid., an air pump located within the fluid chamber and opera tive from the exterior thereof, the tank formed with. an external (lcpreesion, and a connection between the. pump and the air chamber with the connection bridging Said depression.

3i. A. portable fire extinguisher comprising a tank haring an air chamber at one end and a chamber at opposite end for con lining a fire ext-in uishing fluid, an outlet for the fini-d cham r, an air pump within the fluid chamber and. operative from the exterior thereof, the tank formed with an external. depression, a fitting removably bridging thel depression and adapted to connect the air pump with the air chamber, a check valve carried by the fitting, an outlet for the fluid chamber, and means for passing air from the air chamber to the fluid chamber'.

6. A portable fire extinguisher comprising a tank partitioned between its ends to form an air chamber at its lower end and a cham ber at its 'upper end for confining a er.'- tingnishing duid, ari-outletior the fluid .zl'nimber, means for passing air from the air clnimbi-ir to the fiuid chamber, the tank formed with an external depression, a pump cylinder within the fluid chamber with the lower end of the cylinder open in the tank depression, a plunger for the 4 pump cylinder operative from Ythe exterior of the tank, a fitting removably entered in the tank de#

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