US780898A - Fire-extinguisher. - Google Patents

Description

PATENTBD JAN. 24', 1905.

H. w. MIX. FIRE EXTINGUISHER.

APPLI'UA TIOH TILED MAR. 9, 1904.

- ATTORNEY Patented January 24, 1905.

PATENT OFFICE.

HARVEY W. MIX, OF VANCOUVER, CANADA.

FIRE-EXTINGUISHER.

SPECIFICATION forming part of Letters Patent No, 780,898, dated January 24, 1905. Application filed March 9,1904. Serial No. 197,207.

To (tlZ whom it may concern:

extinguisher of that class wherein carbonic acid gas is generated when the apparatus is required by the admixture of an acid to acarbonated solution, and my effort has been to provide an extremely simple construction that will be certain in its action and to so reduce the weight of the apparatus and adapt its form that it may be used by women or children if occasion should so require.

The construction and operation of my device are fully explained in the following specification and illustrated in the drawing which accompanies it, which represents a longitudinal section of the device.

It consists of an elongated cylindrical vessel 2 of comparatively small diameter in proportion to its length. At one end of this vessel a section 3 is divided off by an inwardly projecting annular partition 4. This divided section 3 is designed to receive a closed bottle of acid, (represented by 5,) and this extreme end of the vessel is closed with a cap or plug 6, removablyattached to the body of the vessel by a screw-thread. Through thecenter of this plug 6 is screwed a stem 7, having a pointed inner end 8 and at the outer end a cross-handle 9, by which the stem may be turned and by virtue of the screw-thread may be inserted into or withdrawn from the section 3 of the vessel. The stem 7 passes through a packed gland 10 in the cap 6, by which leakage of the contents of the vessel past the stem is'prevented, particularly when the gas-presing the flow through it.

The application of the device is extremely simple. The stop-cock 12 being closed, the vessel is filled with a solution of a carbonate of soda or similar material, and the glass bottle 5, holding the acid, is inverted in the section 3, with its neck through the central aperture. The cap-plug 6 is screwed tightly in place, its central stem 7 being withdrawn, so that its tapered endis clear of the bottle 5.

If considered necessary, a lock-pin 15 may be inserted through the stem 7 exterior to the gland .to prevent the stem being inadvertently screwed down on the bottle.

When desired to be used, the handle 9 is turned, and the point 8 of the screwed stem 7 is thereby forced against the bottle 5, which it readily fractures, and the carbonic-acid gas is immediately generated by the admixture of the acid of the solution of soda, the pressure of generation being itself sufiicient to project a stream of carbonated. water with considerable force when the stop-cock is opened for that purpose.

I am aware that prior to my invention fireextinguishers have been provided in which carbonated water is generated when required by the admixture of suitable materials; but such admixture has depended either on the overturning of the vessel containing the acid or the breaking of a glass bottle of acid by a plunger from without or a weight within the vessel; but these devices form a cumbersome and comparativelyheavy apparatus, and as the operation-of the plunger or the weight frequently requires a considerable impact to cause the fracture of the bottle they are not adapted for general domestic use where a woman or child is frequently alone in the time of emergency.

In my device the pointed stem having a screw-thread affords an efiective and convenient means of fracturing the acid-bottle and one which a child can readily understand and use when required, while the comparatively small diameter of the vessel enables it tobe made of very light material, while sufiiciently strong to stand the pressure of the'generated gas, and the necessary volume being provided by extra length enables the jet to be more readily projected toward a fire.

I therefore claim as new and desire to be protected in by-Letters Patent- 1. In a fire-extinguisher, an elongated cylindrical vessel having a conically-shaped end, said comically-shaped end having a threaded aperture at the apex, at stop-cock having a threaded shank for cooperating with the threaded aperture of the conical portion of the vessel, and the other end of the said vessel being internally screw-threaded, an integrallyformed apertured diaphragm formed near said internally-threaded end and adapted to receive a sealed vessel having a neck for proj eeting through the aperture of the diaphragm, a screw-threaded closure member for said internally-threaded end of the vessel, and means carried by said screw threaded member for puncturing or breaking said sealed vessel when desired.

2. In a fire-extinguisher, an elongated cylindrical vessel having a conically-shaped end, said conically-shaped end having a threaded aperture at the apex, a stop-cock having a threaded shank for cooperating With the threaded aperture of the conical portion of the vessel, and the other end of the said vessel beinginternally screw-threaded,an integrallyformed apertured diaphragm formed near said internally-threaded end and adapted to receive a sealed vessel having a neck for projecting through the apertureof thediaphragm,ascrew- 3. In a fire-extinguisher, an elongated cylindrical vessel having a discharge-aperture at one end, a stop-cock held in said aperture, said vessel being formed near its opposite end with an integrally-formed apertured diaphragm, and said vessel at the diaphragm end being internally threaded, a screw-threaded closure member for cooperating with said internallythreaded end, said closure member having a threaded aperture and provided with a gland, a threaded stem passing through said gland and aperture to cooperate with the screwthreaded portion of the aperture and terminating in a pointed end, said internal diaphragm being so arranged as to form a chamber between it and the closure member, a sealed vessel having a neck held Within said chamber With its neck projecting through the diaphragm aperture, said vessel being so formed as to closely fit said chamber, for the purposes specified.

L. In a fire-extinguisher, an elongated oylindrical vessel having a conically-shapml discharge end havinga threaded aperture at the apex, a stop-cock having a threaded shank for cooperating with the threaded aperture of the conical portion of the vessel, said vessel including an inwardly extending portion adapted to be extended into the vessel, the other end of saidvessel being internally threaded, an integrally-formed apertured diaphragm located near said internally-t1]readed end to divide the elongated vessel into two compartments, said diaphragm havinga central aperture, one of said vessel-compartments adapted to receive a sealed containing-vessel having a neck for projecting through the aperture of the diaphragm, a screw-threaded closure member for said internally-threaded end of the vessel and means carried by said screwthreaded member for puncturing or breaking said containing vessel when desired.

5. In a fire-extinguisher, an elongated cylindrical vessel having a discharge-a ierture at one end, a stop-cock held in said aperture and having an extension projected within the vessel, said vessel being formed near its opposite end with an integrally-formcd apertured diaphragm, said vessel at the diaphragm end being internally threaded, a screw-threaded closure member for cooperating with said internally-threaded end, said closure member having a screw-threaded apertn re and a threaded extension, an apertured cap having a threaded portion for cooperating with said closure-member extension, said closure member being provided with agland, a stem passing through said apertured cap, said gland and said threaded portion of the closure member, said stem having one end threaded and provided with a conical point, a handle connected with the other end of the stem, a stoppin for regulating the movementoi the stem, said internal diaphragm being so arranged as to form a chamber between itand the closure member, a sealed vessel having a neck held within said chamber with its neck projecting HARVEY W. MIX.

Witnesses:

ROWLAND BRITTAIN, ELLIOE W EBB ER.

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