Патент USA US2412491код для вставки
De‘; 10, 1946. 2,412,491 E. F. ANGELL FIRE EXTINGUISHER Filed July 22. 1944 3" I i; A i i w n; Earle EA ng'ell' _ Y; Patented Dec. 10, 1946 2,412,491 UNITED STATES PATENT OFFIQE» 2,412,491 FIRE EXTINGUISHER Earle F. Angell, Richmond, Va., assignor to Edgar C. Bothwell, Jr., Richmond, Va. ApplicationJu-ly 22, 1944, Serial No. 546,103 1 Claim. (Cl. 169——26) 2 This invention relates to an improved ?re ex tinguisher in which a chemical is discharged upon the heat of fire releasing a spring-pressed ham . mer or plunger to break a glass or .other frangi ble seal of the chemical container. One of the objects of the invention is to pro vide a ?re extinguisher which may be hung on the wall of a room; or on the side wall or roof of a truck’; or in kitchens or similar places where ?re protection is needed, and which will not break spending parts through the several ?gures of the drawing. A distinctive feature of the invention resides in providing a container for the ?re extinguish ing chemical and a detachably connected hood which carries the smasher slug, said. hood also having a series of openings to provide a nozzle for more effectively distributing the chemical when released by ?re. These features may be 10 embodied in the constructions shown in Figs. 1 and 1l. , or crack when struck or accidentaly dropped, but As will be observed from Fig. 1, this ?re ex will be instantly ready for use in the event of tinguishing unit primarily consists of a container ?re. In that connection, the invention contem plates a container for a ?re-smothering liquid A and a hood B, ?tted to the lower end thereof, chemical made out of metal, plastic or other nor 15 the said lower or nozzle end of the hood hav ing a cage or guard C a?ixed thereto, as will mally non-breakable material, but having an out presently appear more in detail. Said container let covered by a frangible or breakable-seal. A has two exteriorly threaded portions l and Another object of the invention is to provide a 2 of different diameter. The threaded portion 9 chemical container provided with means for de tachably connecting it to a hood which carries a 20 is preferably made on a collar or ?ange I2L located substantially at the junction of the inclined bot smasher slug, so that the hood and container tom 3 with the side Wall of the container. may be readily connected for assembly or discon The exteriorly threaded portion 2 is located nected as, for example, when it is desired to re on the outer face of the neck ‘in of the bottom place a container or hood, or to effect renewal of the chemical contents of the container, by 25 3 thereby to receive the internally threaded skirt portion 4 of a cover ring 5. This ring is intended way of salvage, in the event that the entire unit to clamp a glass or other frangible seal 6 over has not been damaged too badly by ?re to be the outlet or mouth of the said neck of the con of further service or use. This arrangement also tainer. affords the opportunity of easily resetting the smasher slug and substituting a new fusible unit. 30 The threads I of ?ange Ia are intended to re ceive the internally threaded ?ange ‘l of the hood A further object of the invention is to provide B. As will be apparent from the drawing, this the nozzle or lower end of the hood with a guard hood is preferably of substantially frusto-coni for the guide stem of the smasher slug to avoid V cal form thereby to include the tapering side accidental release thereof if it is unintentionally struck by moving objects in the room or shifting 35 wall portion 8 and the relatively flat bottom wall 9. The lower portion of the wall 8 is pro cargo in a truck. vided with a plurality of openings ill to form With the above and other objects in view, a spray nozzle to permit the escape of ?re extin which will more readily appear as the nature guishing ?uid when the seal 6 is broken. of the invention is better understood, the same consists in the novel construction, combination, 40 The wall 9 of the hood B supports the smasher slug designated generally as S. This element and arrangement of parts hereinafter'more fully preferably consists of a lead plunger portion l 1 described, illustrated and claimed. having a flange !2 and a striking head I 3, together A preferred and practical embodiment of the with a brass or equivalent stem M. This stem invention is shown in the accompanying drawing, 45 is medially notched at opposite sides as indi in which: ‘ cated at l5. That is to say, two pairs of notches Figure l is a vertical sectional view of the may be provided, one adjacent and axially spaced ?re extinguisher constituting the present inven from the other and angularly disposed at approx tion. imately 90°, to provide su?icient longitudinal tol Figure 2 is a detail view of the smasher slug. 50 erance for the stem to set the spring It by means Figure 3 is a cross sectional View taken on of the fusible element F. In other words, two the line 3-3 of Figure 1. sets of notches may be provided to afford oppor Figure 4 is a vertical section of a modi?ed tunity to easily compress the spring and place ' form of the invention. the fusible element F in one of the notches even Similar reference characters designate corre 65 though. there may be some inequalities in the 2,412,491 3 wall 9 and some variation in the overall com pressed length of the spring coil l6. As will be seen from Figure 1, the spring l6 surrounds the body of the plunger H and the stem 14, and is con?ned between the ?ange l2 of the slug and the inner face of the bottom wall 9 of the hood B when the fusible element F is 4 According to Fig. 4, the container A’ has the hood B’ attached directly to the neck. That is to say, the external threads 2b of the neck mate with the internal threads 2° of the hood B’ which carries the smasher slug S and the guard C’. The hood B’ is also provided with an internal rib B2 or its equivalent which cooperates with the mouth of the container to clamp the frangible placed in engagement with one selected pair of seal 65 in position to receive a. blow from the head the notches 15. The fusible element F preferabIy consists of 10 13a of the slug S when the latter is released. The two arms I‘! and 18 each having a disk like por tion at one end which is soldered to a circular plate I9 by a fusible solder I92 which melts at a slug S is of the same construction shown in Fig. 1. From the foregoing, it will be seen that the structural features of the present invention are given temperature. Thus, the fusible element F is of substantially hairpin formation. Assuming bly standpoint, and also afford the opportunity the hood B is disconnected from the container A, the spring l6 may be compressed until one of the notches i5 is accessible beyond the outer face of the wall 9 of the hood. The arms l1 and iii of the fusible element F can then be placed astride advantageous from a manufacturing and assem by salvaging containers which are not seriously harmed by ?re, since, in most cases, the ?re ex tinguishing liquid, namely, carbon tetra-chloride, usually puts out the ?re before the container it self is damaged to any appreciable extent. It will, of course, be understood that the con tainer A may be provided with an eye or equiva lent hanger E. As shown, the hanger may be on the stem It in one-pair of notches l5 and then a link 20 passed over the upturned ends of said arms to hold the fuse against lateral displace top of the container or it may be on the side ment. The disks are then soldered to the plate l9. When the solder connecting the arms I"! and 25 thereof. Also, the shape of the container may I8 melts the arms will fall apart and the spring " be varied within the scope of the invention as shown in Fig. 4. That is to say, it may be made so that its vertical dimension is less than its transverse dimension to produce a relatively ?at , contingency arises, the ?re extinguishing con tents of the container A will spill into the hood, 30 rectangular or circular body to ?t within the purlins or ribs of the roof of a truck. and discharge through the nozzle openings ID on“ I claim: to the ?re. A ?re extinguisher, comprising, a non-break As previously indicated, the container A is in able chemical storage container including a tu tended to be made of non-breakable material; for example, aluminum, plastic, or any material’. 35 bular side wall, a downwardly inclined bottom wall integral therewith, an annular neck at the which is normally non-breakable. At the time‘ “ lower end of said bottom wall, said neck having the container A is made, it is provided with the external threads, 2. cover ring having internal exterior threads I and 2 which make it possible threads for engaging said external threads of the not only to readily separate the container A from the hood B to set the smasher slug in the hood“; neck, a frangible seal secured to the open end of the neck by the cover ring, an annular collar but also permit the cover ring 5 to be removed" " integral with the junction of the tubular side wall so that the container may be ?lled with liquid ' and the downwardly inclined bottom wall and and the cover ring then replaced to secure the disposed as a dependent continuation of said side glass or other frangible seal 6 in place. [6 will be released to urge the head l3 toward the frangible seal 6 of the container. When this By making the container A out of non-break-g ,--' wall, said collar being externally threaded, a able material, breakages incident to use of glass‘ ’ containers of the grenade type are avoided, while, at the same time, the container is always ready for use because the frangible seal 6 is always po sitioned to be struck by the smasher slug although .4 it is protected against accidental breakage be cause of the shielding effect afforded by the hood B. Also, the guard C, consisting of the strips d whose upper ends are secured to the hood, Pro tects the lower end of the stem 14 against acci: i1 dental displacement. frusto conical hood having a perforated bottom portion and an upper internally threaded ?ange for detachably engaging the external threads of the collar, a smasher slug supported in the hood, and fusible means cooperating with the hood and slug to hold said slug poised for automatic release to break said. seal. EARLE F. ANGELL.