Патент USA US2407264код для вставки
Sept w, 1946» c. B. FERRE-rl. ' 2,407,264 f PROJECTILE Filed Oct. 20, 1942 _ 51/fo ATTORNEYS, n ¿meer Patented Sept. 1Q, 1946 S, ATENT OFFICE S 2,407,264 PROJ E CTIL‘E Clyde B. Ferrol, San Francisco, Calif., ía'ssignor‘t‘o Ferrel Industries, Inc., Reno, Nev., v‘a corpora tion of `Nevada Application @october 20, 1942, Serial No. '462,700 '3 Claims. (Cl. '102---99.) l 2 This invention relates to projectiles for use in rifles and -like iirearms, and particularly to their structure. Explosives may in general be classed in two eliminated as an annular fin 5 projecting from the body and 'formed integrally therewith has been found to give suíiiciently to engage the rifling and insure spinning action when the pro groups, to wit, explosives of the burning type, jectile is Vrlred. and lexplosives of the detonating type. In the op eration of rifles and guns, Iwhether they be of small or large caliber, an explosive of the burn projectiles of >this vtype have been employed, it has ‘been 'found that the viin need only project In a ‘S0-caliber »rifle in which about t1¿i000 o'f an inch to insure satisfactory en ing type is generally employed, as this produces gagement with relation to the rifling. The explosive charge employed is Vor the deto a large volume of gas under high pressure which 10 nating type and is placed directly >in the cham functions as the propelling agent for the projec« tile. ber 3. The charge is -divided into two sections, Due to a general knowledge of explosives and indicated at ‘B andC, and while both are of the detonating type, one, to wit, the section C, is also as aresult of numerous experiments per formed, I have come to the conclusion and have 15 made of a more sensitive type, such as fulminate of mercury, whilethe other vmay be of a less sen~ of explosive can be more efficiently employed as sitive type, such as trinitro-toluene, or the like. Trinitro-toluene has -been found satisfactory as a kpropelling agent of projectiles than a burning it may be compressed »and `molded into sticks b type of explosive, -as Vmuch greater muzzle veloc ity and _penetrating or striking force can be ob 20 which ‘are provided with a recess -6 at the inner end and a cone-shaped chamber 'l at the outer tained. This is due to the fact that I have de end. .A >stick of 'this character is placed in cham signed a projectile which utilizes and is impelled ber 3 and then the V’disc C of fulminate of mer not only by the “brisance” or impact of the wave cury, and on top thereof is placed a compressed of detonation set up by the explosive when det onated, but also by the impact of a concentrated 25 thin disc of trinitro-toluene, or like material, and directed compression wave produced by the such as indicated at '8,`to~seal and retain the ex plosive Vcharge -within the projectile. The disc '8 gases generated during detonation. is -pressed into place andis sprung `into annular The projectile and the manner in which the demonstrated and proved that a detonatîng type groove-9 tofinsure retention .andsealing detonating type of explosive is employed is shown by way of illustration inthe accompanying draw 30k In :actual practice, the projectile, constructed and loaded as described, operates `substantially ing, in which: asffollows: Fig. 1 >is an enlarged central longitudinal sec When placed in a gun or `rifle barrel, such as tion of the projectile; shown at It! in Fig. 5, the rear ñaring end il of Fig. 2 is a similar enlarged section of the rear end of the projectile; 35 the projectile will engage and be held in place by asimilar flaring .seat l2 kformed at the end of Fig. 3 is a section of the primary detonating the bolt :head 1'4 of the gun. This head also car charge, to wit, iulminate of mercury or the like; ries a firing pin l5 and when this strikes the disc Fig. 4 .is a perspective View of the main det 8, a suíiicient blow is imparted to detonate the onating charge, and Fig. 5 is a longitudinal section of a portion of 40 fulminate of mercury, which in turn detonates the main charge B. The waves produced by det a rifle showing the projectile placed therein in onation travel in the direction of arrows a, with position to be fired. a velocity of several thousand meters per sec Referring to the drawing in detail, and partic ond, and as the “brisance” or violence of the blow ularly to Figs. l and 2, it will be noted that the produced by the waves of detonation are direct projectile is fairly long and has a main body por ed against the flat face 4, the projectile will be tion A terminating in a closed, pointed forward propelled in a forward direction with a velocity end 2. A longitudinally extending chamber 3 is proportional to the intensity of the Waves ab formed within the projectile, which is open at sorbed in the forward portion of the projectile. the rear end and terminates in a iiat face 4 at Substantially simultaneous with this wave pro the forward end. The body of the projectile is pelling of the projectile compression Waves pro made of steel as forces generated within it are duced by the burning gases are also traveling large. Steel equivalent to so-called cold rolled in a forward direction with substantially the or mild steel will, however, suffice, and for this same velocity, and these waves also impact reason a soft metal jacket 0f Copper or the like, to engage the rif-ling of a gun barrel, may be 55 against the face 4 and thereby further aid in in , 2,407,264 4 3 creasing the total force and increasing the ve locity of the projectile when ñred. An important feature of the present invention, and one that must be thoroughly understood, is the fact that the action of a detonating explo 5 While this and other features of my invention have been more or less speciñcally described and illustrated, I Wish it understood that changes may be resorted to Within the scope of the ap sive is much more powerful in the direction in which the waves of detonation are traveling than in the opposite direction in th'at the said waves move in the path of least resistance which, in the present case, is from the rear end of the pro that if the charge be hollowed out or cone Having thus described and illustrated my in vention, what I claim -and desire to secure by Letters Patent is: 1. A projectile of the class described compris ing, a cylindrical body portion terminating in a pointed forward end„A an elongated chamber formed within the projectile, open at the rear and terminating in a flat face adjacent the for ward end, a wave producing propelling detonat sh'aped, as shown at ‘l in Fig. 1, that theeffect ing explosive filling the major portion of the jectile, as the explosive wave-producing acceler ating charge therein is consumed, to the forward end thereof. In addition thereto, I have found pended claims. chamber said charge having a cone-shaped chamber formed in its forward end with the base of the cone adjacent the nat faced end of the chamber in which the charge is placed, a pri out perpendicular to the conical surface, and 20 mary detonating explosive charge rearwardly thereof, a disc of explosive material covering the these meet in the center, producing a much primary explosive, and means for retaining said greater acceleration effect than an ordinary det disc and both charges against removal from the onation wave. This action is just the same as chamber. the intensification elîect produced where two 2. A projectile of the class described compris waves meet in a piece of detonating fuse. Hence, 25 ing, a cylindrical body portion terminating in a it should be clear that the projectile shown in this pointed forward end, an elongated chamber instance is not only propelled by the brisance formed within the projectile, open at the rear or impact against the face 4 of the detonated and terminating in a ilat face adjacent the for wave alone, but also by the wave of compres sion produced by the cone-shaped chamber 'l 30 ward end, a wave producing propelling detonat ing explosive filling the major portion of the formed at the outer end of the main detonating chamber said charge having a cone-shaped charge. rI‘he pressure of the gases produced may be utilized to a certain extent but is not de chamber formed in its forward end with the base of the waves acting upon the projectile are in tensified considerably. The reason seems to be that when the waves of detonation reach`the cone-shaped hollow, Waves of compression start pended upon, as the bolt head structure in this instance is such that the moment gas pressure of the cone adjacent the flat faced end of the reaches a predetermined point the bolt begins to recede and the gases are then permitted to discharge and vent themselves to the atmos phere, such release of the gases being desirable as heat is thus quickly liberated and dissipated, 40 mary detonating explosive charge rearwardly permitting a gun or rifle of this character to be used for rapid ñre, such as machine guns and the like, without excessive heating. The disc 8, which retains and seals the main chamber in which the charge is placed, a pri thereof, a disc of explosive material covering the primary explosive, and an annular groove formed in the inner face of the chamber adjacent the rear end thereof -to receive and retain the disc in engagement with the primary charge. 3. A projectile of the class described compris ing, a cylindrical body portion terminating in a pointed forward end, an elongated chamber explosive charge and the primary detonator, is 45 formed within the projectile, open at the rear both combustible and explosive in itself and is, and terminating in a flat face adjacent the for of course, completely converted into gas just as ward end, a molded compressed wave producing the main and primary charges are when the propelling explosive detonating charge filling the projectile is detonated. Hence, when the pro major portion of the chamber, a primary ex jectile discharges from the end of the barrel and 50 plosive detonating charge disposed in Contact and the gases have escaped, no residual matter will rearwardly thereof, means for sealing and retain remain and the barrel is thus clean and open to ing both charges within the chamber, and a cone receive the next projectile. v shaped chamber formed in the forward end of While I h‘ave particularly referred to fulminate the molded compressed charge to concentrate and of mercuryv as a primary detonator, and trinitro 55 direct the said propelling waves produced by det toluene as the main charge and less sensitive onation against the flat face at the forward end detonator, it is obvious that many other types of the chamber in unison with a detonation wave of detonating explosives may be employed. For produced by detonation of the explosive detonat instance, in place if trinitro-toluene I may em ing charges. ploy dynamite, picric acid, gun cotton and simi 60 lar detonating materials. CLYDE B. FERREL.