New Fire Extinguisher
A newly invented fire extinguisher differs from the usual type in that after it has been inverted for use and it is desired to stop the flow of extinguishing liquid, it can be turned back to the normal position, without appreciable loss and used again as occasion may demand. This is accomplished by the use of a gravity actuated sliding valve mounted upon the end of a tube arranged to extend from the ordinary screw-down valve in the head or neck of the vessel to within any appropriate distance from the base of such vessel by which means the object desired is effected.
In the illustrations Fig. 1 is a sectional elevation showing the extinguisher in its vertical position with the valve open as when in use. Fig. 2 is a similar view to Fig. 1 but shows the vessel inverted with the outlet valve still open but with other devices for preventing the apparatus from acting unless brought hack to the desired position.
The free, inner end e of the tube d is in the form of a valve seating while the member f has a valve 6 at its lower end which when the vessel a is inverted (as shown by Fig. 2) will, by gravity, descend with the member f so as to fit upen or take over the seating 3 on the end of the tube d thus forming a joint to close the opening c through the tube d. By these means when the outer valve b of the vessel a is opened in order to bring the apparatus into use the internal pressure acts threugh the opening 7, 7a made through the walls of the sliding member f so as to force out the contents of the vessel a through the opening e in the tube d past the valve b to he discharged threugh the nozzle g, as desired.
After the user has opened the valve b to permit the actions described, provided by mistake or otherwise he inverts the vessel a, as shown by Fig. 2, then the sliding member f will bring the valve seating 6 against the seating 3 on the end of tube d and so entirely close the openings in it and the passage through the vessel a, thus the apparatus will cease to act until the user again turns it into proper position as shown by Fig. 1 in order that the member f may slide or descend to the position shown by Fig. 1 to enable the actions to recommence and this is effected without less (to any appreciable extent) of internal pressure.
The fire extinguisher is the invention of John Arthur Goodall, of Bradford, England, whose application was filed on September 17, 1924, the serial number f>eing 738.195. The patent was granted on January 13, 1925, the number being 1,522.817.
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