USRE14753E

USRE14753E - Chemical fibe-extincrtjisheb

Info

Publication number: USRE14753E
Authority: US
Inventors: William H. Bahfil
Filing date: 1918-07-29
Publication date: 1919-11-18

Description

w. H; BANFIL. CHEMICAL FIRE EXTINGUISHER.

APPLICATION FIL ED DAY 22. 19l9- Rel "Issued Nov. 18, 1919.

Fig.1.

STATES PATENT OFFICE- WILLIAE BANIIL, OE WATE BTO WII, MASSACHUSETTS.

GHEMIQAL flewxnnsv me- Spectfication of Reissued Letters Patent. Reis sud Nov. 18, 1919.

Original No. 1,295,157, dated larch 25, 1919, Serial Ho. $7,132, filed T n11 29, 1918. Application for reissue filed mm; 1 19.

To all whom it may concern:

specification, like characters on the drawing representing like parts.

This invention relates to improvements n chemical fire extinguishers of the class in which a reservoir isprovided for an alkaline solution and the bottle of acid retained in the reservoir normally in upright position but adapted when the extinguisher is to be usedto be inverted and discharge its contents into the alkalinesolution thereby to generate a suificien't' gas toforce the contents of the extinguisher through a suitable nozfz le. In such extinguishers a stopperffor the acid bottle is provided which normally rests upon the mouth of the bottle and has the stem extendin into the neck thereof, meansv being provide for permitting the stopperto, fall away from the mouth'o'f the bottle when the extinguisher'is inverted for use. When. thus inverted the size per falls away from. the mouth of the bott e and the stemwhich is" more or less withdrawn from the neck "of the bottle serves to restrict. the flow. o'fjac d and also to distribute'the'fsa ne uniformly. thereby controlling the. generation ofga s. and causing the erationfof gas' to prooeje'd with substantial uniformity throughout the area of the reservoir. In fire Y extinguishers of this class the stopper-distributeriusually eornprises a mass 01: porcelain or othervitre; us material which 1sv adapted. to seat upon hemouth of the. bottle the stem be n a do: endent inte a1 central extension t er'eof. The stopperistributier usually is contained in a cage de endingfromor connected to. the cover oft e, extinguisher and is. removed with the cover when the extinguisher is to be refilled. When the cover is thus removed the stop per falls to the bottom of the cage" so that the stem projects and fre uentlyfisfithe cover isbeing carried aside or. aid down the. Ste n is broken or chipped so that when, replaced the re ainder thereof. fails'to serve" its'function, 0 'properl seatingjthei stopper upon the mouth oft e bottle and, when" the fire extinguisher is inverted the: mutilation "or absence of the stem causes failure of proper restr ct on and distribution of the acid flowing'fro n'the bottle. The object of the present inve'ntionbro'adly speaking is to provide a chemical fire extinguisher of the class described with means for insuring proper closure of the acid bottle and proper distribu tion of the contents of the bottle when the extinguisher is' placed in use by inversion. More speclfically the object of the invention isiY-tofprovide the cage for supporting the 'is illustrated in the accompanying drawings in which:

Figure l isa vertical longitudinal section of the upper. portion of the fire extinguisher illustrating my invention applied therto;

Fig. 2 is a vertical sectional view of the ca e and, stopper-distributor, and

ig. 3] is a transverse sectional view on the line 33 ofFig. 1. I The, fire extinguisher illustrated in the accompanying. drawings comprises. a cylindric'al reservoir 1 having a contracted neck ."rtion 2 to which is secured a bottle holder comprising. a sleeve 3. having downwardly extended rods 4 supporting at their.- lower end a base preferably in the form of a ring 5' which serves as a seat for the lower end for'the bottom of the bottle 6; A ring 7 may alsofbel secured to the rods 4 intermediate 0t theirlength to. strengthen the constructlon of the bottle holder and also provide additional means" for engaging the wall of thebottle. The receptacle is provided with a coverf8 having an annular extension 9 adapted, to be readily grasped by the hand and is provided with a downwardly extending, screw threaded flange 10 which engages suitable. screw threads 11 upon the sleeve 3 ofthe'bottlejfsupport 4, the end flange 10 preferably abutting against the contracted extension 2- oftlie. reservoir 1 The cover 8" is also' provided with a downwardly extending flange "-12 provided with means for and. removablysupporting the cagefor the bottle stopper-distributer. The

'preferred form of cage illustrated herein comprises a sleeve 13 having screw threads engaging companion screw threads upon the flange 12. i

Downwardly depending arms 14 are connected to or preferably formed integral with the sleeve 13 and are connected at their lower ends to a ring 15 which'may' also'conveniently be made integral with the arms 14 and sleeve 13. The stopper-distributer comprises a substantially cylindrical mass- 16 of material of considerable we1ght'preferably vitreous material such as porcelain and is of such size as to slide readily within the cage formed by the sleeve 13 and downwardly extending guiding arms 14. The stopper-distributer preferably has a concaved or recessed seat 17 adapted to engage and closely seat upon the mouth of the bottle and is also rovided with a central downwardly extending stem 18 adapted to enter the mouth of the bottle.

In order to prevent the stem 18 project ing from the cage when the cover is removed, the arms 14: are formed with thickened lower portions 19 presenting shoulders 20 to engage the edge of the seat 17 of the stopper-distributer 16 when the cover is re moved from the receptacle but it will be ob 'vious that other means may be provided to accomplish this pur \Vhen the extinguisher is to be filled the cover 8 is unscrewed from the bottle support 3 and wholly removed from the extinguisher. An alkaline solution or means to form an alkaline solution is then introduced into the reservoir 1. The acid bottle 6 is likewise removed and filled and then inserted within the bottle support as illustrated in the drawings. replaced and screwed down thus permitf tin the stopper-distributer. to rest upon the ne from the mouth of the bottle with its extension 18 projecting into thev neck thereof.

When the extinguisher is to be used it is inverted and the bottle 6 falls by gravity until its shoulder 21 engages and rests upon the ring 15 of the cage for the sto per-distributer. The stopper-distributer ing of considerable weight continues to descend by gravity until it rests upon the face 22 of the cover 8 at which time the seat 17 is removed from the mouth of the bottle sufliciently to permit the contents of the bottle to flow out. Thestem 18 which still projects into the mouth of the bottle serves to distribute the stream which flows from the bottle uniformly into the alkaline solution in the reservoir and also to restrict its flow. By adjusting the sleeve 13 relativelyto the flange 12 any desired space may be provided between the seat 17 and the mouth of the bottle when the extinguisher is inverted thereby providing a suitable regulation The cover is then which will enable the apparatus to generate gas more or less adually accordin to the character of the c emicals used or ot er conditions. The liquid in the reservoir is forced by the pressure of the gas thus gen erated through the hose 23 which leads from near the bottom of the extinguisher when the latter is inverted and in operative position.

By thus providing means for inclosing and projecting the stem 18 of the stopperdistributer at all times the breaking or injurin of the distributer stem is avoided and e proper operation of the distributer device insured. This is very important for the reason that if the acid is permitted to flow too freely into the alkaline an excessive pressure is generated which will either discharge the contents of the reservoir too quickly or possibly break the reservoir.

It will be understood that the embodiment of the invention disclosed herein is illustrative merely and that various other means may be provided for preventing breakage of or injury to the stem 18 of the stopper-' distributer within the meaning and scope of the following claims.

Having fully described my invention what I claim as new and desire to secure by Letters Patent is:

1. A cage for a bottle stopper of a chemical fire extinguisher in which the stopper for the acid bottle is provided with a central distributing stem adapted to enter the neck of the bottle, comprising a sleeve attached to the cover of the extinguisher, a series of depending arms rovided at a distance from 1 their ends with slioulders positioned to limit the movement of the stopper and to retain the stem Within the boundary of said cage whereby breakage or injury to said stem when the cover is removed from the receptacle or replaced thereon will be avoided.

2. A cage fora bottle stopper of a chemical fire extinguisher in which the stopper for the acid bottle is provided with a central distributing stem adapted to enter the neck of the bottle, comprising a sleeve attached to the cover of the extinguisher, a seriesv of depending arms adapted to guide the stopper-distributer, and means for limiting the movement of the stopper in position to retain the stem thereof within the boundary of said, cage, whereby breakage or injur to said stem when the cover is removed rom the receptacle or replaced thereon will be avoided.

3. A cage for a bottle stopper of a chemical fire extinguisher in which the stopper for the acid bottle is provided with a central distributing stem adapted to enter the neck of the bottle, comprising a member attached to thecover of the extinguisher, said member provided with means for limiting the movement of'the stop-per to retain the stem thereof within the boundary of said cage, whereby the stem will be protected from breakage or injury, said stopper being freely slidable within the cage, the cage and stopper being removable from the extinguisher vwithout removing the acid bottle.

4. A cage for a bottle stopper of a chemical fire extinguisher in Which the stopper for the acid bottle is provided with a central distributing stem adapted toenter the neck of the bottle, comprising a member adapted to inclose the neck of the bottle, having means for detachably securing the same to the cover of the extinguisher, said member so constructed as to limit the movement of the stopper and retain the stem thereof within the boundary of said cage whereby the said stem will be protected from breakage or injury, said stopper being freely slidable Within the cage, the cage and stopper being removable from the extinguisher With-' out removing the acid bottle.

5. A cage for a bottle stopper of a chemical fire extinguisher in which the stopper for the acid bottle is provided with a central distributin stem adapted to enter the neck of the bott e, comprising a depending member adapted to inclose the neck of the bottle, said depending member so constructed of said cage whereby the said stem Will be protected from breakage or injury, said stopper being freely slidable within'the cage, the cage and stopper being removable from the elxtinguisher Without removing the acid bott e.

6. A cage for a bottle stopper of a chemical fire extinguisher in which the stopper for the acid bottle is provided with a central distributing stem adapted to enter the neck of the bottle, comprisin a member adapted to inclose the neck 0 the bottle, having means for detachably securing the same to the cover of the extinguisher, means on said member With Which the stopper is adapted to come in contact to limit the movement of the stopper and retain the stern thereof Within the boundary of said cage whereby the said stem will be protected from breakage or injury, said stopper being freely slidable Within the cage, the cage and stopper being removable from the extinguisher Without removing the acid bottle.

WILLIAM H. BANFIL.