US2540544A

US2540544A - Fire extinguisher

Info

Publication number: US2540544A
Application number: US714440A
Authority: US
Inventors: Casimir G Oksas
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-12-06
Filing date: 1946-12-06
Publication date: 1951-02-06
Anticipated expiration: 1968-02-06

Description

Feb. 6, 1951 G. OKSAS 2,540,544

FIRE EXTINGUISHER Filed Dec. 6, 1946 2 Sheets-Sheet l oooooooooooooom oooooooooooooool oooooooooooooo ooooooeooooooo INVENTOR. lC05 /m/'r 6i OKSUS Feb. 6, 1951 Q G, oKsAs 2,540,544

FIRE EXTINGUISHER 2 Sheets-Sheet 2 Filed Deo. 6, 1946 INVENTOR. Cds //77//- 6. O/fsas A for/@ys Patented Feb.l 6, 19,51

UNITED STATES PATENT OFFICE 'l V2,540,544 v FIRE Ex'rINGUIsriER yCasimir o. oksas, Troy, N. Y. Application December 6, 1946, Serial No. 714,440

Y f 4 Claims.

This inventionrelates to a new and improved re extinguisher of which the following is a specificationf The primary object of this invention resides in the provision of a new and improved portable re extinguisher which may be quickly and easily recharged from without the container of said extinguisher to place the extinguisher in a safe usable condition.

AnotherA object of this invention resides in the provision of a new and improved carbon dioxide (CO2) fire extinguisher which is quickly and easily portable to the scene of a re, and quickly and easily operated for the purpose of extinguishing the fire.

Still another object of this invention is the provision of such an extinguisher which may be quickly and easily recharged as described safely and properly by a novice who merely follows the instructions of the required steps oi first discharging the container through provided discharge means prior torellling the extinguisher with its charging elements.

Still another object of this invention is the provision of a fire extinguisher of the character described which requires only the placing of Dry Ice in a provided housing therein, available from without the container, where the Dry Ice sublimates to form a high pressure CO2 gas content within the extinguisher casing adapted for` use for' extinguishing lires in the conventional manner.

Still a further improvement and advantage of this invention is the provision of such a flre extinguisher which is of extremely simple and inexpensive design, and which is readily available for use to the general public on an extremely economic, safe, and reliable basis.

Further improvements and advantages of this invention will readily appear to those skilled in the art when the following ydescription is read in the light of the accompanying drawings in which:

Fig. 1 is a vertical cross section of a side elevation of the extinguisher.

Fig. 2 is a vertical cross section taken on line 2-2 of Fig. 1.

Fig. 3 is a vertical cross section taken on line 3 3 of Fig. 1.

Fig. 4 is a side elevation taken on line 4-4 of Fig. 1.

Fig. 5 is an enlarged view of the casing joint.

Referring now to the accompanying drawings which illustrate the preferred embodiment of this invention and in which like numerals indicate similar parts throughout, A designates a cylindrical housing or container composed of two separate sections the bottom half I and the top section 2 which is secured lto the section IY by an interlocking joint 3, as illustrated in Fig. 5, comprising triangular shaped tongue 4 freely inset into a triangular cut groove 5, and a completey lining layer of an adhesive glue 6 or the like retaining said tongue and groove in their interlocked position. Thus an air tight casing A is Y formed to house the gaseous lire extinguisher.

A rectangular opening 'I is provided at one point in the circumference of the lower section I and a box-like member 8 is projected horizontally inward said casing being secured to an inwardly projected flange 9 about the opening I by means of a dove-tail IIJ lor the like.

A rectangular opening II is provided in the bottom of the box-like member 8 adjacent the casing opening 'i to open downward into a re ceptacle I2 which rests adjacent the` casing and is positioned by a raised flange I3 on the cas' ing bottom. This housing is provided on its three exposed walls with a patterned plurality'of apertures I4 opening into the interior of the casing.

A rectangular plate or cover I5 with projected perpendicular sides I6 is slidably mounted within the box-like member to and away from the casing opening selectively ,making available the opening tothe housing I2. A handle I1 is provided on the outer face of theplate I2 to facilitate the inward and outward movement thereof, and a sealing material I8 is provided about the edge of 'said plate so as to contact the edge of said opening to retain an air-tight joint,

It` will be. noted that the box-like member is provided with stops at 26, 26 engageable with the cover. The stops limit the movement of the Y rectangular plate or cover I5 so that when the cover is out of sealing contact with said container opening, the cover blocks access to the interior of said container I. It is thus impossible to insert an excess of the solid gasiable material in the container since the amount inserted is limited by the size of open top receptacle I2.-

Thiswill prevent overloading of the fire extinguisher and consequently keep the gas pressure within safe limits and reduce the danger ofV bursting of the container.

The arrangement as described provides for the inward movement of the closurefplate I5 to permit the deposit of Dry Ice in the housing I2, and the plate is then returned to a sealing position against the casing wall. The Dry Ice then sublimates filling the casing with CO2 gas and causing a pressure increase with the sublimation which forces the plate l5 against the casing hermetically sealing the joint and providing sufcient pressure for a rapid and complete clischarge of the CO2 from the casing by the construction now to be described.

The center of the top of the top section 2 is provided with an integrally formed throat 2l! which projects outwardly from the top where it expands to form a nozzle 2l. The throat 20 provides an outlet for the gas. A tapered rotary plug valve 22 is mounted in the throat 2S and is provided on one projected end without the throat with a spring washer 23 which provides for the secure positioning of the valve, the second extended end being provided with a wing handle 24 which is mounted adjacent a right angular stop 25 which limits the valve rotation t0 90 degrees providing for the positive opening and closing of the valve for permitting the emission of the CO2 gas through the nozzle 2| and the positive stoppage thereof.

Thus it may be seen that .9, new and improved easily recharged re extinguisher has been provided which is durable, safe, and simply constructed.

t may also be seen that it is necessary to safely eliminate any possible gas in the casing before opening the casing for addition of dry ice.

Having thus described and explained the function and construction of this invention and with full belief that modincations in size, shape and general characteristics would not constitute departure from the spirit of this invention what I desire to claim is:

l. In a fire extinguisher having a gas tight casing, the improvement of means for introducu ing solid gasiable material into the interior of the casing comprising a nlling opening formed in a wall of said casing, a cover positioned within said casing for fitting said filling opening, guide means mounting said cover for movement toward and away from said casing wall into and out oi' closing relation to said filling opening, said cover in open position enabling introducing solid gasifiable material through said opening into the interior of said casing to gasiiy therein so as to exert suicient pressure within said casing when said cover is in closed position to main- Y tain said cover in gas tight closing relation to said lling opening, said guide means comprising a box-like form projecting radially inwardly from the casing wall and surrounding said liing opening, said box-like form having a side opening communicating with the interior of said casing through which solid gasiiiable material can be passed into the interior of said casing through said iling opening, said cover comprising a plate extending across the interior of said box-like forni having a peripheral iiange slidably engaging the interior o said box-like form, said flange being arranged to close said side opening in said box-like form while said cover is in closed position and to uncover said side opening in the open position of said cover.

2. In a re extinguisher having a gas tight casing, the improvement of means for introducing solid gasiable material and positioning the same within the interior of said casing comprising la, iilling opening formed in a wall of said casing, guide means comprising a box-like form open to and registered with said lling opening, a perforated container Within said casing adjacent to said box-like form, said box-like form being provided with an opening providing access through said box-like form to the interior of said perforated container, and a cover for said filling opening slidably confined in said box-like form for inward movement from a closed position within said lling opening to an open position inwardly beyond said access opening whereby solid gasiable material can be introduced into said perforated container only while said cover is in open position.

3. A ire extinguisher comprising a container having an outlet in one end, there being an opening extending through a side of said container intermediate the ends thereof for the introduction therethrough of a solid gasiiiable material, a cover positioned within said container adjacent to said container opening and mounted in said container for movement into and out of sealing contact with said opening, and an open top receptacle positioned within said container and below said opening in said container and xedly positioned in the latter for receiving the solid gasiable material introduced through said container opening.

4. A fire extinguisher comprising a container having an outlet in one end, there being an opening extending through a side of said container intermediate the ends thereof for the introduction therethrough of a solid gasifiable material, a transversely disposed slideway positioned in said container and having one end surrounding said container opening, a cover arranged longitudinally of said slideway and mounted in said slideway for movement into and out of sealing engagement with said opening, means on the other end of said slideway and engageable with said cover when the latter is in its position of movement out of sealing contact with said container opening to thereby block access to the interior of said container, and an open top receptacle positioned within said container and below said opening in said container and xedly positioned in the latter for receiving thev solid gasiiable material introduced through said container opening.

CASIMIR G. OKSAS.

REFERENCES CITED The following references are of record in the ile of this patent:

UNITED STATES PATENTS Number Name Date 1,887,020 Hassensall Nov. 8, 1932 1,957,640 Grison K May 8, 1934 2,412,434 Thompson Dec. 10, 1946