US831988A - Chemical fire-extinguisher. - Google Patents

Description

J, G. PLATT & W. B. LANDON. CHEMICAL PIRE BXTINGUISHER.

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. 'ATTORNEYS JOHN G. BLATT AND WILLIAM B.

LANDON, OF MEADVILLE, PENNSYL- VANIA, ASSIGNORS OF ONE-THIRD TO MORRIS B. BREWSTER, OF

COLUMBUS, OHIO.

CHEMICAL FIRE-EXTINGUISHER.

Specification of Letters Patent. l

Patented Sept. .25, 1906.

Application led September Z8, 1905. Serial No. 280.407.

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. Be it known that we, JOHN G. PLATT and VILLIAM B. LANDON, citizens of the United States, residing at Meadville, in the county of Crawford and State of Pennsylvania, have invented certain new and useful Improvements in Chemical Fire-Extinguishers, of which the following is a specification.

Our invention relates to new and useful improvements in chemical fire-extinguishers.

The object of the invention is to provide a superior device and greatly simplify the construction, thus increasing the commercial value.

Another ob]- ect lies in the provision whereby the bottle may be filled without removing it from its support or disturbing the stoppen valve.

Still another feature resides in the arrangement of the parts whereby theI acid is mixed with the liquid at the proper point and in such quantities as to assure a slow mixture, thereby avoiding the danger of explosion and preventing any of the acid escaping from the reservoir without first mixing with the liquid.

Finally, the object of the invention is to provide an extinguisher that will be strong, durable, and efficient, comparatively inexpensive to manufacture, and one in which the several parts will not be liable to get out of working order.

W'ith the above and other objects in view the invention consists of the novel details of construction and operation, a preferable embodiment of which is described in the specification and illustrated in the accompanying drawings, wherein` Figure 1 is a vertical sectional view of the extinguisher, showing the stopper-valve and acid-bottle in elevation. Fig. 2 is a similar view, the extinguisher being inverted and the acid-bottle broken away to illustrate its connection with the cover, and Fig. 3 is a horizontal cross-sectional view taken on the line :c :c of Fig. 1, a portion of the extinguisher being shown in plan.

In the drawings the numeral 1 designates a cylindrical reservoir formed of a suitable metal and having its entire inner surface coated with a suitable acid-resisting metal, such as lead. An annular base 2 is provided on the reservoir below its bottom 3, While a bail-handle 4 is arranged in the base for purposes hereinafter described.

At its upper end the reservoir is provided with an annular externally-screw-threaded collar 5, on one side of which a bail-handle 6 is secured to the reservoir. A short curved pipe 7 extends from the upper end of thereservoir adjacent the collar 5 and opposite the handle 6. On .its end the pipe is provided with a nozzle 8, directed downwardly, while about the entrance to the pipe 7 a Wire strainer 9 is secured to theV inner side of the reservoir. An annular cover 10, having a depending internally-threaded flange 11, is provided for the reservoir and has its flange 11 engaging with the collar 5. The cover 10 is formed near one side with a vertical cylindrical valve-chamber 12, the upper end of which is closed by a screw-cap 13, applied from the upper outer side of the cover, so that access to the valve-chamber may be had by simply unscrewing the cap 13 and withoutV disturbing the cover 10. At its lower end the chamber is formed with an annular valve-seat 14, on which the enlarged head of a valve-stopper 15 is adapted to rest, the said valve-stopper projectingsome distance below the valve-chamber and adapted to work therein by gravity. A curved passage 16 leads from the valve-chamber a short distance above the valve-head, (reference being had to Fig. 1,) extending through the cover and establishing communication with the under side thereof. About the lower end of the curved passage the cover is formed with an annular recess 17, (see Fig. 2,) which recess is adapted to snugly receive the mouth of a glass bottle 18 in such a manner that the opening in the neck of the bottle registers with the passage 16. The bottle, which is adapted to contain the acid, is held rigidly in place, so as to form a tight joint with the cover by a holder comprising a horizontal plate 19, extending across the bottom of the bottle, and rods 20, secured to the plate and extending on opposite sides of the bottle, have their upper ends threaded into the cover IOO on each side oi' the passage 16. By proturbing the acid-bottle or its parts. Howvision of such a holder the bottle is securely ever, should it ever be desirable to remove o' 5 held in place irrespective oi the position of the acid-bottle 18 it is simply necessary to the reservoir. loosen the rods ZO and the bottle may be In utilizing the extinguisher the operatoi readily disengaged 'from the cover.

grasps the bail-handle-l at the bottom or' the It is to be observed that owing to tlie extinguisher in one hand and the handle 6 in curved formation oi the passage 16 upon re- 7o the other, inverting the reservoir, so that the turning the reservoir to its normal or original nozzle 8 is pointed upwardly, as shown in position, as shown in Fig. 1, the acid will ini- Fig. 2. In this manner he is enabled to readily mediately cease to pass from the bottle to the manipulate the extinguisher and to direct the reservoir and also any acid remaining in the stream therefrom wherever desirable, while said passage will pass back into the bottle, as 7 5 the use of a hose is advantageously dispensed is clearly evident 'from the drawings. Therewith, the latter often causing trouble by belfore should the stopper-valve fail to operate coming twisted and increasing the excitel and close on the valve-seat 14 `further mixment and confusion of the operator. Vhen ture oi' the acid with the solution, as by abthe reservoir is inverted, the stopper-valve sorption, is reduced to a minimum. 8o 15 falls by gravity in the valve-chamber 12, Having now fully described our invention,

so that its head rests on the cap 13, and the what we claim, and desire to secure by Letacid contained in the bottle 1S is free to ters Patent, is

pass through the curved passage 16 into the 1. ln a lfire-extinguisher, the combination valve-chamber 12, past the reduced end ofthe with a reservoir and an acid-bottle, of a cover 8 5 valve, and into the reservoir, where it mixes lor the reservoir carrying a valve-chamber, said cover being arranged to establish coniwith the liquid solution contained therein, forming the proper chemical extinguishing munication betweenthe acid-bottle and the valve-chamber, and a valve arranged in the liquid, which passes through the strainer 9,

chamber.

pipe 7, and out of the nozzle 8 with great 2. 1n a {ire-extinguisher, the combination force. Owing to the curved passage 16 the acid will pass very slowly from the bottle, so with a reservoir, of a closure Jfor the reservoir carrying a valve-chamber, and an acid-botthat it is properly mixed when coming in contle supported at one side of the valve-chaintact with the solution contained in the reservoir. In fact, were it .not for the chemical ber and having communication therewith. action resulting from the contact of the acid 3. In a fire-extinguisher, the combination with the solution which tends to draw the with a reservoir, of a closure for the reservoir acid from the bottle only a few drops of the carrying avalve-chamber, an acid-bottle supacid would pass from the bottle at. a time. ported at one side of the valve-chamber and From this it will be apparent that the possihaving communication therewith, and a ioo bility of the acid passing out of the pipe 7 valve arranged in the chamber adapted to without mixing with the solution is reduced cut oil communication with the reservoir.

to a minimum and the proper mixture necessarily had. Should it be desirable to discon- 4. In a fire-extinguisher, the combination with a reservoir, of a closure for the reservoir tinue the use of the extinguisher, the same upon being nverted or returned to its original carrying a valve-chamber, an independent Io 5 position will immediately cease to operate, as

closure for the valve-chamber, and an acidbottle supported at one side of the valvethe stopper-valve falling in the chamber 12 chamber and having communication therewill close the said valve-chamber and prevent v communication between the same and the with.

5. 1n a nre-extinguisher, the combination 11o reservoir.

Much stress is placed upon the cap 13, the

with a reservoir, of a closure for the reservoir carrying a valve-chamber, an acid-bottle supvalve-chamber 12, and the passage 16,where ported from the closure at one side of the by the acid-bottle may be readily iilled by simply removing the cap 13 and pouring the acid into the valve-chamber 12, from which chamber.

valve-chamber and having communication therewith, and a valve arranged in the valve- I I 5 it will pass by way of the passage 16 to the 6. 1n a fire-extinguisher, the combination bottle 1S, the stopper-valve preventing any with a reservoir, of a closure for the reservoir of the acid passing into the reservoir. This carrying a valve-chamber, an independent may be accomplished without removing the closure for the valve-chamber arranged to cover 10 or in any way disturbing the bottle. permit access to the valve-chamber from the It is also to be noted that the valve-chamber exterior of the reservoir-closure, and an acidand bottle-holder being supported from the bottle arranged in the reservoir having comcover 10 by simply removing the cover the niunication with the valve-chamber. parts may be withdrawn from the reservoir 7. In a hre-extinguisher, the combination and the same filled or cleaned without diswith a reservoir, of a cover for the reservoir carrying a valve-chamber a ud povded with In testimony whereof We aHX our signaan internal passage having communication tures in presence of tWo Witnesses.

with the Valve-chamber, an acid-bottle hav- JOHN G, PLATT.

ing communication with the passage, means WILLIAM B. LANDON.

- for supporting the acid-bottle from the cover, I Witnesses:

a cap for the Valve-chamber', and a valve ar- H. V. MCKEDY, ranged in the valve-chamber. DAVID VAN RIPER.

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