US2765273A - Corrosion resisting fire extinguisher - Google Patents

Corrosion resisting fire extinguisher Download PDF

Info

Publication number
US2765273A
US2765273A US33285453A US2765273A US 2765273 A US2765273 A US 2765273A US 33285453 A US33285453 A US 33285453A US 2765273 A US2765273 A US 2765273A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
extinguisher
liquid
fire
piston
brass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
Zbigniew J Lobos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stop-Fire Inc
Original Assignee
Stop-Fire Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D1/00Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C13/00Portable extinguishers which are permanently pressurised or pressurised immediately before use
    • A62C13/003Extinguishers with spraying and projection of extinguishing agents by pressurised gas
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23FNON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/06Constructional parts, or assemblies of cathodic-protection apparatus
    • C23F13/08Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
    • C23F13/10Electrodes characterised by the structure

Description

ilnited States Patent CGRRUSTQN RESISTING FIRE EXTEJGUISHER Zhigaiew 3. Lobos, Brooklyn, N. Y., assignor to Stop- Fire, Inc, Brooklyn, N. Y., a corporation of New York Application Ianuary 23, 1953, Serial No. 332,854

4 Claims. (Cl. 264-497) This invention relates to a hand fire extinguisher, or the like, in which a fire extinguishing liquid of the organic halide type, such as carbon tetrachloride or chlorobromethane, is stored for periods of disuse, in containers of such metal as brass, which can be corroded by the liquid or impurities within it, on protracted exposure. This corrosion becomes particularly serious where the type of extinguisher employed contains operating parts which may be corroded to the point of interfering with the operation of the device.

Normally these organic chlorides are considered free from corrosive action on brass, but, in fact, serious trouble has been found to arise from this cause, after prolonged disuse. Whether this arises from traces of free chlorine, or free carbon disulfide in the commercial liquids, or whether there is trace dissociation of the chloride in the presence of the brass, is not clear.

It has heretofore been proposed to guard against such corrosion by the use of metallic magnesium, but such metal is not wholly satisfactory. It does not always completely prevent the corrosion, with a resultant tendency of the valves to stick.

The accompanying drawings Fig. 1 shows a fire extinguisher aving moving parts and valves within the fire extinguishing liquid, in combination with the anticorrosion element, in accordance with this invention. Fig. 2 is a detail cross-section of the anticorrosion element. The details of this extinguisher, itself, will form a separate application, by the assignee of this invention. For the purpose of this invention, it is sufiicient to describe it quite generally. The drawing is a central longitudinal section of the extinguisher, and anticorrosion element.

The numeral is a container, preferably of brass, having a discharge nozzle 11 at one end. Mounted axially within the container is a discharge tube 12 communicating with the nozzle 11, and firmly fixed therein.

Coaxial with the tube 12, and spaced therefrom, is a tubular piston rod 13, on which is mounted for limited sliding movement, a piston 14. This piston moves within a pump cylinder 15, and its movement is so limited that on movement of the piston rod 13, in either direction, the piston will not move until after a sufiicient lost motion is taken up, to cover a valve opening 16 in the one direction, or 16a in the other direction in the piston rod.

Freely rotatable on the tube 12 is a bracket 17, and freely rotatable on the piston rod 13 is a bracket 18. These brackets 17, and 18, each have a bore 170 and 18a, extending through it, parallel to the tube 12, and these bores are connected by a tube 19, whereby the two brackets, and the tube 20 form a frame, freely rotatable by gravity around the axis of the container 10, having a continuous passageway from one end of the container to the other. This passageway is provided with a ball check valve 17b and 1811, at each end, and near each end it is connected by a cross bore 170 and 18c, with the interior 2,765,273 Fatented Oct. 2, 1955 of the cylinder 15. Each of these passageways is closable by a check valve 17d and 18d.

The piston rod 13 is operated by a handle 20, into which the piston rod is screwed, and mounted upon the piston rod is a centering gasket 21, which engages the tube 12, when the handle is in its innermost position, and in that position a gasket 22, within the handle 20 closes the end of the tube 22. As the handle 20 is reciprocated the cylinder 15 and the piston 14 forms a double acting pump, such, that on the upstroke of the piston, liquid will be drawn into the tube 13 from above the piston, through the opening 16, and on the downward stroke, through the opening 16a, and in each case, the liquid will be dis charged through the nozzle 11. The exact construction of the parts is not pertinent to this invention.

in accordance with this invention it has been found that if there is placed in the container a free body of the same metal as the most active of the metals of the alloy, of which the container is made, the corroding action of any of the impurities in the halide comprising the fire extinguishing liquid will be so neutralized by the free body of the metal that no corrosion of the alloy, or of either of the metals contained therein, will take place. Thus, when the container is made of brass, comprising the alloy of copper and zinc, the neutralizing metal is the metallic zinc, preferably in contact with the brass. In the drawing there is shown a coil 23 of zinc Wire, which surrounds the cylinder 15, and lies in contact with it.

The coil form here shown for the Zinc, is for convenience only, and if the tendency to corrosion is appreciable, the metal may comprise a thin metal strip, or a wire havin a large surface area, as for example, eing made starshape, in cross sections. With this construction the extinguisher will remain free from any corrosion, for long periods of disuse, and the extinguisher will correspondingly, remain in readiness for operation. This is believed due to the fact that the free zinc reacts more easily with any trace impurities than the alloyed metal, because, in fact, it is the same metal as the more active of the alloyed metals, it has no added tendency to dissociate th organic halide gas.

The check valves are so directed that the ejected liquid is drawn into the cylinder from the container, through Whichever one of the check valves 17b, or 1817 is at the lower end of the cylinder 15, depending upon how the container is held.

What I claim:

1. A fire extinguisher constructed of brass and adapted to contain an organic halide extinguishing liquid, having therein a surface of metallic zinc exposed to the liquid.

2. A fire extinguisher constructed of brass and adapted to contain an organic halide extinguishing liquid, having therein a surface of metallic zinc in contact with the brass of the extinguisher.

3. A brass fire extinguisher adapted to contain organic halide extinguishing liquid having therein a coil of zinc wire, having a star shape cross section.

4. A brass fire extinguisher adapted to contain organic halide extinguishing liquid having therein a coil of zinc wire, having a star shape cross section and being in electrical contact with the metal of the extinguisher.

References Cited in the tile of this patent UNITED STATES PATENTS 856,361 Neiburg June 11, 1907 1,190,705 Bassett July 11, 1916 1,941,040 Mann Dec. 26, 1933 2,524,511 Butler Oct. 3, 1950 2,563,171 Huthsing Aug. 7, 1951

Claims (1)

1. A FIRE EXTINGUISHER CONSTRUCTED OF BRASS AND ADAPTED TO CONTAIN AN ORGANIC HALIDE EXTINGUISHING LIQUID, HAVING THEREIN A SURFACE OF METALLIC ZINC EXPOSED TO THE LIQUID.
US2765273A 1953-01-23 1953-01-23 Corrosion resisting fire extinguisher Expired - Lifetime US2765273A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US2765273A US2765273A (en) 1953-01-23 1953-01-23 Corrosion resisting fire extinguisher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2765273A US2765273A (en) 1953-01-23 1953-01-23 Corrosion resisting fire extinguisher

Publications (1)

Publication Number Publication Date
US2765273A true US2765273A (en) 1956-10-02

Family

ID=23300137

Family Applications (1)

Application Number Title Priority Date Filing Date
US2765273A Expired - Lifetime US2765273A (en) 1953-01-23 1953-01-23 Corrosion resisting fire extinguisher

Country Status (1)

Country Link
US (1) US2765273A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3035997A (en) * 1955-07-07 1962-05-22 Gross Maria Theresia Helena Appliances for cleaning silver and silver-plated articles
US3409530A (en) * 1965-10-20 1968-11-05 Continental Oil Co Helical electrode
US3441491A (en) * 1966-03-03 1969-04-29 Dow Chemical Co Packaged galvanic anodes
US3445370A (en) * 1965-05-07 1969-05-20 Roger M Sherman Corrosion prevention device for irrigation pipe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US856361A (en) * 1906-05-25 1907-06-11 Gustave L Neiburg Apparatus for electrochemically and mechanically purifying liquids.
US1190705A (en) * 1915-07-12 1916-07-11 George B Bassett Water-meter.
US1941040A (en) * 1929-12-17 1933-12-26 Mann Carl Process and device for cleaning precious metals, especially silver
US2524511A (en) * 1947-02-10 1950-10-03 Edgar M Butler Self-energizing electrolytic water correction assembly
US2563171A (en) * 1949-10-12 1951-08-07 Jr Charles K Huthsing Apparatus for controlling corrosion in fire extinguishers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US856361A (en) * 1906-05-25 1907-06-11 Gustave L Neiburg Apparatus for electrochemically and mechanically purifying liquids.
US1190705A (en) * 1915-07-12 1916-07-11 George B Bassett Water-meter.
US1941040A (en) * 1929-12-17 1933-12-26 Mann Carl Process and device for cleaning precious metals, especially silver
US2524511A (en) * 1947-02-10 1950-10-03 Edgar M Butler Self-energizing electrolytic water correction assembly
US2563171A (en) * 1949-10-12 1951-08-07 Jr Charles K Huthsing Apparatus for controlling corrosion in fire extinguishers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3035997A (en) * 1955-07-07 1962-05-22 Gross Maria Theresia Helena Appliances for cleaning silver and silver-plated articles
US3445370A (en) * 1965-05-07 1969-05-20 Roger M Sherman Corrosion prevention device for irrigation pipe
US3409530A (en) * 1965-10-20 1968-11-05 Continental Oil Co Helical electrode
US3441491A (en) * 1966-03-03 1969-04-29 Dow Chemical Co Packaged galvanic anodes

Similar Documents

Publication Publication Date Title
US3420220A (en) Pneumatic rifle with adjustable valve
US3369609A (en) Fire extinguishing apparatus
US5160795A (en) Gun with pivoting barrel, rotary ammunition cylinder, and double action firing mechanism
US2812884A (en) Spray dispensing valve
US2816691A (en) Spray device having a flexible sac lining
US3949731A (en) Spring type spear fishing guns
US2868421A (en) Attachment for spray containers
US2109589A (en) Liquid pistol
US4081112A (en) Caulking gun
US2552857A (en) Aerosol bomb
US4068780A (en) Electrothermally actuated fluid dispensing device
US1880354A (en) Fluid gun
US2575071A (en) Explosive-operated device
US4454963A (en) Fluid dispensing anti-burglar device
US3233783A (en) Fluid containers
US2755787A (en) Preliminary lubricating means for an engine
US4061249A (en) Aerosol dispenser ring
US2701119A (en) Ball cock valve
US4260130A (en) Valve for corrosive fluids
US2569975A (en) Fire extinguisher
US3754602A (en) Fire extinguishing system
US7128163B1 (en) Self servicing fire extinguisher with external operated internal mixing with wide mouth and external CO2 chamber
US5026310A (en) Electric autoinflator
US2780389A (en) Squib operated gas release device
US2299073A (en) Gun