US1051496A - Fire-extinguisher. - Google Patents

Description

W. GALLENKAMPQ FIRE EXTINGUISHER. APPLICATION FILED APR. 10, 1912.

Patented Jan. 28, 1913.

"rrnn STATES PATENT oration.

WILHELM GALLENKAMP, 01E MUNICH, GER.

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Specification of Letters Patent.

Patented Jan. 28, l id.

Application filed April 10, 1912. Serial No. 889,739.

the operation of the device at the desired time. Such a-stopper also requires extra room in the extinguisher, and projects undesirably near the discharge outlet. Moreover such stoppers are not always reliable and any absorption of water around them causes undue dilution of the acid, in the case of sulfuric, and sometimes causes escape of the resulting diluted and expanded acid into the surrounding liquid, with resulting premature discharge of the extinguisher. The.

diluted acid is alsowlien weakened less able to withstand extreme cold and extreme climates. In the case of hydrochloric acid any escape of the acid might cause destruction of the metal of the vessel itself.

According to the present invention the above-mentioned disadvantages are overcome. Instead of using such a solid stopper for the acid bottle there is used a stopper'or upper layer of a, suitable liquid which is placed above the acid in the acid receptacle and separates it from the surrounding water or aqueous liquid containing the other in gredients of the extinguishing composition. This liquid which is placed in the upper part or neck of the acid bottle, is of such a nature that it does notmix either with the acid, or with the other liquid (solution of hicarbonate), its specific gravity being between those of these two liquids. Thus with sulfuric acid, (sp. g1'. 1.84), for example, carbon tctr'achlorid could be used, its specific gravity being 1.63; with hydrochloric acid, (sp. gr. 1.20), o-nitro-toluene (sp. gr. 1.163) could be used; or other suitable liquids having similar specific gravities. These liquid layers or liquid stoppers form a most 1nt1- mate contact with the neck of the bottle, and thus prevent any mixing of the liquids above and below them; also any inoperativeness, due to-stieking of a solid stopper, is avoided. The provision of the liquid stopper of the present invention consequently gives an or rangement which is at the same time simple and reliable, and free from the disadvan.'

tages of the known solid stoppers.

The present" invention is further illustrated bythe accompanying drawings in E is the vessel containing the water or aqueous solution of bicarbonate used for extinguishing, F the bottle supported by, and attached to, the vessel E, S the acid in the bottle, and T the'stopper or plug or layer of liquid in the neck of the bottle forming a separat ng layer between the acid and the aqueous layer above. The arrangement of the present invention otters the added ad vantage that the acid bottle can be, as shown,

submerged in the aqueous liquid, without in- V termixing therewith. At the same time, however, when the acid does escape it is prevented from escaping except through the 7 liquid above it, and a thorough mixing, and

a prevention of the escape of the acid itself,

is assured. The vessel is also in this we protected from the direct action of the aci I claim:

1. In a fire extinguisher an acid bottle. provided with a stopper in the form of a liquid non-reactive with the acid, and of less specific gravity.

In testimony whereof I atlix my signature in presence-ct two witnesses.

. WILHELM GALLENKAMP. \Vitnesscs Bum-1mm GEUSTSCII, Guono MUSSGILLEN.

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