Патент USA US2409285код для вставки
i. 15, 194%: V N_ M_ HOPKlNs V DUAL PURPOSE‘ AER‘IAL BOMB 2,4Q9Z82 ‘ I Filed June 18, 1942. 29.1 6a 70 _ 52 ‘5/ 66 ‘ 5o . . . 5/ 6/;- 69 65,636 $1.2 67 ‘ 50 ‘ 62 651 52 9/ . ' . G6 70 5 49 60’ , wig 59 /o 92 54. “ 6/ 575a 46 "a .513 45 " 47 m Inventor 2,409,282 Patented Oct. 15, 1946 UNITED STATES PATENT OFFICE 2,409,282 _ DUAL-.PURPO SE AERIAL BOMB .Nevil Monroe Hopkins, New York, N, 1.5-; ‘Bay monde B. Hopkins, executor of said Nevi'l Mon roe Hopkins, deceased, assignor, by mesne as signments, to Raymonde" Briggs Hopkins, Samuel Lloyd, and Murray T. Quigg, as trustees Application June 18, 1942, Serial No. 4.47.570 7 Claims. (01. 192-52) 1 .2 . tion to provide a bomb casing with an inner con This invention pertains to improvements in ways. means and methods of using component liquid parts of a liquid high explosive in aerial tainer ‘having closure members with associated mechanism, for mixing a relatively small volume of a liquid combustible, with a relatively large volume of ‘liquid nitrogen tetra-oxide, either dur ‘bombs. it is a particular object of this invention to provide Ways, means and methods of. using the ing the ?ight of the bomb from plane to target, component liquid parts of a liquid explosive in a non-leak system. ' or after impact of the ‘bomb with the target. ‘ , ‘It is also asvery important object of this inven tion to adjust the vapor pressure of one or more It is a particular object of the invention to provide a bomb casing, enclosing an inner con tainer having closure members with associated 10 liquid combustible ?uids mixed with liquid nitro gen .tetraeoxide, and placed in one chamber of the bomb, so as ‘to be substantially the same as mechanism for moving said closure members into opened positions end/or mixing the component liquid parts to form the liquid high explosive after the release of the bomb as born on. aero plane the Vapor pressure of liquid nitrogen tetra-oxide isolated thereirrom by being placed in another 15 chamber of the bomb - ,It is also a very important ‘object of this ‘in .It is also a. particular object oi the invention vention to adjust the vapor pressure of one or to provide a bomb casing with an inner container more liquid combustible fluids, and placed in having closure members therefor with associated mechanism for mixing the component liquid parts to form the liquid high explosive, either during the ?ight of the bomb from aeroplane to target, or after impact of the bomb with the target, depending upon the adjusted position of a simple control device, thereby producing a dual purpose bomb. l one chamber of the bomb, so as to be substan tially the same as the vapor pressure of liquid nitrogen tetra-oxide isolated therefrom by being placed in another chamber of the bomb. vIt is also an important object of this inven tion to simplify the bomb by fashioning it. and its associated explosive ?ller, so as to require but one detonator, to explode it, either upon impact of the bomb with the target, or by delayed ' It is also a particular object of the invention to provide a bomb casing with novel auto detach action after such impact- ' able ways .and means of attaching the tail mem With the foregoing enumerated objects in view, ber comprising air vanes or stabilizing ?ns.‘ It is also a particular object of this invention 30 as well as certain other objects which. will be come apparent as the description proceeds and to provide anti-fouling means for the external the illustrations are studied, the invention re. mechanism of the bomb upon penetration of or sides in the novel parts, combinations of parts, contact with the ground or debris of a building scienti?c principles and methods, all as here for example, which penetration or contact nor; Inally prevents the proper functioning of said mechanism. , 35 to provide positive mechanism for the function ing of the closure members of the inner con tainer, using stored kinetic energy of compara ‘2 ments over my earlier development work in the art of missiles and other devices, and explosive 40 ‘ vIt is also an important object of the invention to provide an impeller device with a delayed ac. tion for mixing the component liquid ingredients. It is also a ‘particular ‘object of this invention to provide a bomb casing with an inner container having closure members with associated mecha nism for converting a relatively insensitive and relatively low powered mixture of a liquid hydro carbon and liquid nitrogen teire~oxide into a -' relatively sensitive and relatively high powered mixture of these ?uids either during the flight of the bomb from plane to target, or after im pact of the bomb with the target. It is also an important object oi this inven . This invention is a continuation with improve It is also a particular object of this invention tively great magnitude for the purpose. in set forth and particularly covered by the claims. ' ?llers therefor, as exempli?ed by my previously ?led and conending patent applications as fol ‘lows: Missiles, Serial No. 217,900, ?led July '7, 11938; High explosive device, 'Serial No. 217,901,‘ filed July '2, 1938; Penetration liquid explosive missiles, Ser. No. 268,487, ?led April 18, 1939; Liquid ex plosives, Serial No. 272,434, ?led May S, ‘1939,, now ‘Patent No. 2293255; Torpedoes, Serial No. $21406, ?led January 20, )191i2; ‘Explosive devices for war, naval and industrial purposes’, Serial No. ‘$3,816, ?led March 7, 1942; Explosive device, Serial No. 433,989, ?led March 9, 1942; Container for liquid mixtures and vmethod ,of ?lling the some Serial No- 433,988, filed March ,9, 194.2;110W 2,409,282 3 4 Patent No. 2,385,810; Aerial bombs, Serial No. 437,702, ?led April 4, 1942. the axial shaft 20. Pinned on this threaded shaft is the stop collar 30, and above the collar, but screwed up some distance from it, is the threaded hub (threads not shown) 3| carrying the impeller Referring to the accompanying illustrations forming a part of this speci?cation, and in which like numerals designate like parts in all the views— I I ' ' Fig. 1 is a longitudinal sectional view through blades 32, 32, fashioned toexert a pressure in the direction toward the closure member ‘25, on any a bomb made in accordance with this invention, ‘ liquid in which they may be immersed. v33 represents in full and dotted lines the level with the liquid components of the explosivev mix; ' in the container ll of such a liquid (nitrogen .10 tetra-oxide for example), and 34 represents in ture omitted for the sake of clearness; Fig. 2 is a top plan view of the bomb; . _ Fig. 3 is a top plan view of the bomb with the screen cover removed; and ' Fig. 4 is a side elevational view of the tailend Y of the bomb illustrating a portion of the control device used in connection with the timing .of the opening of the inner chamber of the bomb. ‘ Referring to the drawing, I 0 represents the » wall of the cylindrical outer steel casing, and H the wall of the inner steel (or aluminum) tubu lar container provided with a ?ange I2 by which it is suspended coaxially at the wide throat open ing of the bomb casing as shown, and l3, l3 are two of a plurality of large openings through the wall ll. - A steel ring “I is welded to the interior surface of the steel tube and positioned just below the plurality of large openings I3, l3. This ring may be electrically Welded with a continuous gas and liquid tight union all around its periphery, and be . in addition, welded with steel through the agency of a high temperature ?ame, as indicated by the . .V shaped solid mass i5. This ring is provided with a grooved valve seat as shown for the re ception of a correspondingly grooved valve or . closure member I6. There may be a ground gas and liquid tight joint here, or a suitable gasket of tin or aluminum for example, maybe used. full and dotted lines the level in the space be tween saidcontainer and the bomb casing ll] of a mixture of one or more liquid combustible ?uids ‘with nitrogen tetra-oxide on the one hand, or a simpler mixture of one or more liquid combustible ?uids, free of nitrogen tetra-oxide, on the other hand. 35 is the hub of a stout wire spider, fash ioned to act as a centralizing member, when and if necessary for the shaft 20. As previously described the reduced portion 2! of shaft 20 is secured to the collar 22' which seats into the bottom of the large stuf?ng box 35, provided with an internal shoulder 31 serving as a bearing surface for the heavy stationary disk 38, fashioned to relieve the rotatable collar from, the downward pressure of the packing 39 when the stuffing box closure plug 40 is ?rmly screwed down (screw threads not shown). This station ary disk, seated as shown, is an important ,mem her‘, because it prevents the strong downward pressure of the packing 39, from arresting the free rotation of the collar 22. The packing here may consist of graphited asbestos cord for exam ple, as this has proven an excellent packing, not only for liquid hydrocarbons but for liquid nitro gen tetra-oxide, and for mixtures of nitrogen tetra-oxide with liquid hydrocarbons. The stu?ing box 38 is seated in and hermeti cally welded, or otherwise sealed, to an aperture surface of the closure member IS, an end of said 4.0 in the bottom wall of the heavy iron cup M by dog projecting through one of the large openings virtue of its extension boss 42. This heavy iron l3 to prevent rotation of the closure member more cup ,4! is suspended by its integral ?ange 43 than a limited number of degrees. A boss “3 is which overlaps the ?ange l2 of the inner con .formed centrally of the closure member, and said tainer H. Thus it will now be appreciated that boss and said member are bored through and r both ?anges are suspended at the ‘wide throat threaded with a right hand thread to receive the opening of the bomb casing, - A small steel dog I‘! is secured to the upper right hand thread I 9 on the axially disposed steel The metal of the throat of the bomb casing is, shaft 20, which steel shaft is reduced in its diam of course, turned or faced off in a lathe, and the eter as shown at 2|, by turning down in a lathe face ‘of the metal as well as the ?anges l2 and after the screw threads I!) have been cut. The 50 Y43 may be ground together with a gas and liquid end of this reduced portion of said shaft, enters tight ?t, Or suitable gaskets may be provided, the collar member 22 and is securely attached gaskets of tin or aluminum for example. The thereto by screw threads (not shown) and pin. exterior surface of the cylindrical portion of the A stuiling box 23 is pinned to the shaft 20 and neck of the steel casing is, of course, cut with fashioned to enclose the end of the boss I8 with 55 screw threads (not shown) to receive the threads a liquid and gas tight ?t, as well as a length of :(not shown) in the heavy closure cap 44 which, graphited asbestos cord 24 wrapped around the when powerfully turned down by a long and pow shaft in the cavity of the stuf?ng box. ‘ erful' Stilson wrench, clamps and unites the cup The lower end of the tubular steelcontainer 4| and the inner container ‘II to the bomb cas II is closed by the valve or closure member 25, 60 ing and to each other in gas and liquid tight relationship. " provided with a deep groove to receive the end of the container with a gas and liquid tight ?t; The heavy cap 44 is provided with the stout graphited asbestos cord (not shown here) or other central apertured boss member 45 having a suitable sealing device or medium ‘may be used threaded portion 43 (threads not shown) over for this purpose. A metal plug 26 is provided for . which the apertured member 41 is securely locked a ?ller opening in the closure member 25, and 21 in position by means of the heavy nut 48 v (threads is a steel spring secured to the upper surface of not shown)‘; The apertured member 4] carries said closure member as shown and fashioned to alpluralit'y of attaching members 49, 43 for a exert spring pressure against the inner surface ‘cylindrical housing 50 over which slips, with-a of’ the container II, to impede free rotation of tight ?t, the surrounding cylinder 5| to which ‘ said member, are'attached the air vanes or stabilizing fins such vThis closure member is likewise provided with _ a central boss 28 which is bored part way through and threaded with a left hand thread, to receive a portion of the long left hand thread 29 cut upon ' _as.52 of the bomb. The apertured boss member 45 has a pair of recesses 53, 53 for the reception of the pins54, '54‘ ?xed in one end of the tubular member 55 2,409,282 5 freely slidable on the shaft extension 20'. This tubular member is provided with a weight 56, and at its other end carries a yoke member .51 the opposite ends of which have sharp terminals 58, 58 capable of penetrating, when deperessed, 6 unscrew in ?ight (threads not shown), and thus become detached from the boss 19, thereby ex— posing the end of the ?ring pin 80 extending out of said boss. The firing pin, on being ex posed and struck when the bomb impacts the target, ignites a chemical composition in the cap 8| which in turn ignites the powder constituting the thin metal caps 59, 59, disposed over the long closed metal cans 60, BI] and additionally capable the core of the coiled fuse 82 which, upon com of ?ring primers centrally disposed in said cans. pletion of its combustion, explodes the mass of One of these primers is illustrated at 60' and it is fashioned to ignite, through its fuse, the 10 heat sensitive explosive 83, fulminate of mercury for example, withinthe coil of said fuse. combustible composition 6| in the can, said com It is a feature of this invention that a single position consisting of a mixture of sodium ni detonator may be employed, whether the bomb is trate, sulphur and charcoal. desired to be exploded immediately upon its im ‘ This combustible composition is fashioned with pact with its target, or at a time after such im a suitable binding substance, or otherwise, to pact, thereby avoiding the necessity of providing have the long conical recess, ‘as in a rocket, to provide a discharge of high velocity gas, upon ignition of said composition, rather than to pro vide an explosion. The speed of burning is con-_ trolled by the percentage composition of the gun powder in its salt peter, the sulphur and charcoal comprising the .rocket composition placed in the tin cans. By selecting the composition of the detonators having di?erent times of firing as found necessary at the present tune. To, this end there is proposed a detonator capable of explode ing the explosive mixture, for example, within twenty seconds after actuation of its firing pin as by impact of the bomb with the target. This time element of twenty seconds is only by way rocket powder it is possible tov secure close con trol over the mechanical performance of the im peller member 162 with regard to velocity of rev olution and power. This impeller has blade members 63, 63 so in of example, and in any event it is :made such as to be as great as the time element required for the gas generated by the rocket motor 61 to ac complish ‘the opening of the inner container as well as the completion of the mixing of the com the ignited rocket composition strikes them, up is not desired until after the mixing of the com-. ponent parts of the liquid explosive. The reason clined as to revolve, in a right hand or clock for this is that the ?nal action of the detonator 30 wise manner when the streams of hot gases from on the left .hand threads 64 of the shaft 20’. The hub 65 of this impeller is internally threaded (threads not shown) to engage the threads 64 and it is therefore fashioned to climb (as viewed in the drawing) upon such right hand revolu tion. Under the influence of the rocket gas blast, ponent parts of the liquid explosive, but it is to be understood that such mixing may be ,accome plished during the downward ?ight of the bomb and before it reaches its target, or the mixing maybe accomplished after the bomb has reached its target as in the case where a delayed explosion of the bomb is desired; such delayed explosion the impeller blades with their heavy peripherally disposed metal strips 65', 65’ revolve rapidly and is desired when the bomb is used to penetrate the earth to some distance, to penetrate an outer the impeller with its hub member and long as sociated ferrule 66, climbs the thread 64. This aeroplane from the scene of the intended explo climb continues until the end of the hub ‘mem ber strikes the cap member 61 secured to the extreme end of shaft 20' whereupon all of the acquired kinetic energy, as well as the torque of the impeller under the gas discharge, is brought .to bear suddenly in a turning effort on the shaft extension 2|!’ which converts the static friction of the tightly set up screw threads I9 and 29 in the threaded bosses l8 and 28 respectively into moving friction, thereby resulting in closure member [5 being forced upwardly and closure member .25 being forced downwardly by the right and. left hand threads I!) and 2.9 respectively. A heavy wire screen 68 supported by the ring 69 over the end of housing 50, is provided to prevent debris from falling into the impeller mechanism, said screen having centrally thereof a ring member ‘H! serving as a guide for said ferrule which serves the purpose of protecting the screw thread 64 from any debris which may enter through the openings in the screen when ‘the bomb penetrates soil, for example. At the nose of the bomb is provided the .-de-— layed action detonator device 15 screwed into the axial opening 16 (screw threads not shown) through the wall of the bomb casing and covered internally of said caisng by the housing "I?! which is secured to said casing to make a liquid-tight , fit therewith. This housing permits of the ?lling of the bomb casing with a liquid component part of the liquid explosive, ‘with the detonator absent. In the present detonator there is provided the usual form of ‘arming air vanes 18, fashioned to wall of a building, or to permit escape of the sion. Whether the bomb is to have a substan tially immediate explosion upon impact with the target, or a delayed explosion thereafter, it is to be further understood that the detonator has-its action initiated when its firing pin is actuated by the impact. The time element of ?nal action of the detonator may be governed by the propor tioning of the ingredients constituting the fuse core thereof, and/or by varying the length of its coiled fuse. For the purpose of cont-rolling the time of the explosion of the bomb, there vis provided a latch or other mechanism generally identi?ed by the numeral 90 ‘held in frictional support by the :tail housing 59, and provided with a ?nger lug '91 or other actuating device (such as the cord and pulley arrangement indicated ‘by the dotted lines in the upper portion of Fig. 4 for remote opera tion) for sliding the latch, well as provided ‘with an indication means such as the pointer 92. This latch is provided with an inwardly extend ing portion engageable and disengageable with one of the vanes 63 of the air ‘impeller within said housing :50. As indicated by the drawing, when the :latch is in ‘its “up” position, the impeller vanes are prevented ‘from rotation during the downward ?ight of the bomb, with the result that the liquid ingredients of the explosive mixture are not ‘mixed during said ?ight. However, when the impact of the bomb with its target occurs, the weight of the ‘latch is sufficient to cause the ‘latch to auto, matically slide ‘down .by virtue of its momentum 2,409j282 8 or kinetic energy, overcoming its frictional ‘clamp age, ‘and thereby release the impeller vanes. At prescribed temperature a greater vapor pressure the same time of impact, the weighted yoke 57 under its kinetic energy is caused to move down sure) than‘ the vapor pressure (and consequently (and consequently a greater hydrostatic pres the hydrostatic pressure) of the liquid nitrogen Wardly with such forces as to have its sharp points Cl tetra-oxide in the inner container, any slow leak 58 detonate the primers B0’ and thereby initiate age or seepage that could take place during any the generation of gas from the rocket composi period of time through the valve seats, packing tion 8|, the blast of such generated gas causing boxes and screws, would cause the pressure in the rotation of the impeller vanes and the ultimate inner container to rise rapidly until a vapor‘ pres mixing of the liquid explosive ingredients, such 10 sure (and accompanying hydrostatic pressure) mixing being accomplished within the time ele was reached which equalled the vapor pressure ment of the detonator fuse 82. (and hydrostatic pressure) of the exterior sur On the other hand, when the latch is in its rounding liquid. From any inspection of the “down” position, the impeller vanes are not ‘en drawing it will be seen that the space or volume gaged thereby, and hence said vanes are free to rotate during the downward ?ight of the bomb by virtue of the air currents indicated by the arrows; As heretofore described the ‘rotation of the impeller'brings about ‘the mixing of the liquid explosive ingredients‘, therefore the mixing ~ in this case is accomplished during the downward flight of the bomb, and the mixture is completely formed by the time the bomb impacts its target and thereby initiates action of the detonator. From a careful study of this bomb and its asso ciated mechanism, it will be appreciated that it is a dual purpose bomb, with but one detonator de vice,» the bomb being fashioned to explode sub stantially immediately upon impact with a target, 'or to explode through delayed action after such impact, as desired and in accordance with the set position of the control latch. For immediate explosion upon impact (as in use against troops, for example) the impeller vanes 63 constitute an air motor means for mixing the component parts of the liquid explosive during the time of ?ight from aeroplane to target, and dependence is had upon the sheer force of impact of the bomb, and the mixed ‘condition of’ the liquid explosive, to bring about detonation or explosion of the bomb. That is to say, this detonation takes place en tirely independently of the detonator device; in fact such device might in this case be totally is comparatively small between the levelof the liquid nitrogen‘ tetra-oxide in the container and thebottom of the valve in its ring seat. " tainer without rapidly and materially increasing the pressure therein. Therefore, the small in?ux of normal butane or iso-butane mixed with the benzol necessary to establish this superior hydro static pressure, would not be sufficient to form a dangerous explosive mixture. In fact, it would not be su?icient to form any explosive mixture at all. The admixture of a. small volume of these liquid hydrocarbons with the comparatively large volume of the liquid nitrogen tetra-oxide would be far removed from an explosive mixture. To form a really sensitive explosive mixture, it would be necessary to have about one-third of the vol ume comprise the liquid combustibles, and two thirds of the volume comprise the liquid nitrogen tetra-oxide, but upon inspection of the drawing it will be appreciated by any physical chemist or physicist that such a status or proportion would be impossible to establish through leakage. The foregoing technique is employed where I elect to convert a comparatively insensitive and absent. comparatively low powered mixture of benzol, For delayed action, after impact with a target 45 butane and nitrogen tetra-oxide, into a compar (as in demolition work of a building, or a city atively sensitive and comparatively high powered street, or submerged water; gas, or electric mains, mixture by the addition of liquid nitrogen tetra for example) there is employed the rocket com oxide from the inner tubular container H to the position constituting a gas motor means for mix encircling space in the outer shell I0. ing the component parts of the liquid explosive, 50 In the case, however, where ,I elect to com and the delayed action detonator so fashioned, and so timed, as to strike its blow only after the pletely separate the benzol and butane from the ‘ explosive mixture is formed. "In connection with storage of these bombs. it liquid nitrogen tetra-oxide, by placing all of the liquid nitrogen tetra-oxide in the inner tubular in the matter of the adjusted vapor pressures sures, over the foregoing. container H, I elect to reversethe vapor pres is desired to particularly point out that there 55 sures, and consequently the hydrostatic pres is herein disclosed a new and valuable teaching (and consequently the adjusted hydrostatic pres sures) of the liquid combustible material and the In other words I elect to adjust the benzol, butane mixture to have a less vapor pressure, and consequently a less hydrostatic pressure, than the liquid nitrogen liquid nitrogen tetra—oxide, respectively, whereby 60 tetra-oxide in the inner tubular container. In such storage is rendered'safe. That is to say, there has been, and there still persists, a fear in some quarters that one of the liquid component parts of this liquid explosive might leak into this liquid ?ller system, I must increase the ca pacity of the inner tubular container, and reduce the capacity of the surrounding space, because another component part, that is from one cham 65 in most cases I desire to have at least twice the volume of liquid nitrogen tetra-oxide, to one ber to another, and form a dangerous explosive Volume of the mixed hydrocarbons. This sub mixture. In other words, it might be alleged that stantially two to one by volume mixture, in favor such a leak might be brought about through slow seepage past the valve seats of the valves, and past the stu?ing boxes and threads, during weeks 70 or months and perhaps years of storage. However, it is here emphasized that, by 'ad justing the quantity of either normal butane vor " Based upon Boyle's law respecting the 'com pressibility of gases it will be evident, 'upon‘an inspection of this limited volume or space, that very little liquid from the outer casing could be forced into the liquid within the inner con of the liquid nitrogen tetra-oxide, gives the great est sensitivity and power possible upon detona tion. The reason for adjusting the vapor pressure (and consequently the hydrostatic pressure) of the benzol, butane mixture to be less than that of theliquid nitrogen tetra-oxide, is to allow of iso-butane to ‘the benzol, for example, in the space surrounding the inner container, to exert at a 75 restricted leakage of the liquid nitrogen tetra, 2,134,998.82 16 said propeller, and means for ?ring said cartridge oxide into the benzol ‘and butane mixture, raise upon nimreet of 'thedev'ice with a target ' 9 ing the taper pressure under Boyle’s law the outer casing I10. and stopping further leakage ;3, A- device of the character described, com-_ raising a casing and a liquid therein, a "can? there in the same manner as before. but in the teieer‘vvithie said cases and having relatively teevable closures normally in clesed pes'itidnia discreet in is? Within the elesed enema inner tubular container If‘. ,With this filler system and hydrostatic 511+ periority from the inside, I am enabled to detect grammar , by said geese eaesies-mov'émént quickly. andeffectively ‘leakage if. and when. it may take place. This is very e?ectively done by adding a little water to the benzol, butane mix ture, and by inserting an insulated zinc electrode into the casing [0. Through the agency of this electrode, I may quickly “inspect,” from the out side of the bomb, the condition of isolation of the liquid nitrogen tetra-oxide from the benzol, butane, water mixture inside, by attaching the a; sale eleeuree late‘ Wetting-veggies. Positions; 10 terminals of a milli-voltmeter to the zinc elec trode and steel casing l0 respectively, because a small quantity of the liquid nitrogen tetra-oxide will react at once with the water present to form nitric acid. Now nitric acid, zinc and iron, form a voltaic cell (a Grove’s cell or battery), and the electromotive force set up will de?ect the pointer said means extending into said container’ and provided with a member producing circulation and admixture of the two liquids upon opening of said container, means for controlling the actu ation of the closure-moving means, said control means comprising a rotatable motor mounted on the closure-moving means and a potential source of propellant gas for rotating said motor, and means for initiating the release of such propel lant gas upon impact of the device with a target. 4. A device of the character described, com prising two substantially coaxial chambers one disposed within the other, the inner chamber having normally closed but movable end mem bers, a liquid explosive ingredient in one chamber on the mini-voltmeter. A very small trace of water is su?icient to enable one to establish, with 25 and a different liquid explosive ingredient in the other chamber, the ingredient in the outer cham the liquid nitrogen tetra-oxide, the nitric acid ber having a vapor pressure which is not less for this Grove cell or battery type test. Thus, than the vapor pressure of the other ingredient after days, months or years of storage, with this new system, an inspector may quickly determine whether or not there has been leakage. It is obvious that those skilled in the art may vary the details of construction and arrangements - of parts constituting this bomb, as well as vary the ways, methods, etc. of forming the explosive at the same operating temperature, and means for moving the end members of the inner cham her into chamber-opening positions, said means comprising circulating mechanism disposed sub stantially across the inner chamber in close rela tion to the inner surface thereof for causing the mixture and utilizing the bomb, without depart 35 admixture of both ingredients While being circu lated from one end of the inner chamber through ing from the spirit of this invention wherefore the space between said chambers to and into the it is desired not to be limited to the exact fore opposite end of the inner chamber, said ‘means going disclosure except as may be required ‘by the also comprising mechanism delaying the time of claims. 40 opening of the inner chamber. What is claimed is: 5. An explosive device, comprising a casing and 1. An explosive device, comprising a casing and a liquid therein, a closed chamber in spaced re a liquid therein, a closed chamber containing a lation to the walls of said casing, said chamber second liquid and disposed within the liquid in containing a second liquid and disposed within said casing, the two liquids when admixed form the liquid in said casing, the two liquids when 45 ing a highly sensitive explosive mixture, cham admixed forming a highly senstive explosive ber-opening means provided with an impeller mixture, chamber-opening means actuated after having threaded engagement therewith of such impact of the device with a target, said means character as initially to establish relative move provided with an impeller establishing a forced ment between the chamber-opening means and said impeller as well as longitudinal movement 50 admixing circuit of the two liquids after opening of said chamber, the such circuit of the admixed of said impeller upon said chamber-opening liquids passing through the space between the means, said impeller establishing a forced admix walls of said chamber and said casing, means ing circuit of the two liquids after opening of comprising gas-propelled mechanism for actu said chamber, said chamber-opening means pro vided with a stop device for limiting the longi 55 ating the chamber-opening means, and means for‘ tudinal movement of the impeller and stopping the relative movement between the impeller and the chamber-opening means, and means com prising mechanism for delaying the time of open ing of said chamber. 2. A device of the character described, com prising a casing and a liquid therein, a container within said casing and having relatively movable closures normally in closed position, a di?erent liquid within the closed container, means carried by said casing causing movement of said closures into container-opening positions, said means ex tending into said container and provided with a member producing circulation and admixture of the two liquids upon opening of ‘said container, means for controlling the actuation of the clo sure-moving means, said control means com prising a propeller mounted on the closure-mov ing means and an ignitible cartridge disposed to exploding the admixture. 6. An explosive device, comprising a casing and a liquid therein, a closed chamber in spaced rela tion to the walls of said casing, said chamber 60 containing a second liquid and disposed within the liquid in said casing, the two liquids when admixed forming a highly sensitive explosive mixture, chamber-opening means actuated after impact of the device with a target, said means ' provided with an impeller establishing a forced admixing circuit of the two liquids after opening of said chamber, the such circuit of the admixed liquids passing through the space between the ‘walls of said chamber and said casing, means comprising gas-jet-propelled mechanism opera tive after impact of the device with a target for actuating the chamber-opening means, and means for exploding the admixture. '7. An explosive device, comprising a casing and direct its force of gases of combustion against 75 a liquid therein, a closed chamber in spaced rela 11 12 tion to the walls of said casing, said chamber containing a second liquid and disposed within the liquid in said casing, the two liquids when admixed forming a highly sensitive explosive liquids passing through the space between‘ the mixture, chamber-opening means actuated. after impact of the device with a target, said means provided with an impeller establishing a forced admixing circuit of the two liquids after opening of said chamber, the suchcircuit of the admixed walls of said chamber and said casing, means comprising mechanism for actuating the cham ber-opening means, said mechanism under-the 5 influence of a gas generated after impact of the device with a target, and means for exploding the admixture. ' I NEVIL MONROE HOPKINS.