DE2444488A1 - FRAGILE TRAINING BULLET MADE OF PLASTIC - Google Patents

Description

Patent attorney «2 A 4 4 4 8 Dr. O. Loesenbeck Dipl.-Ing. Stracke Dipl.-Ing. Loesenbeck W Bielefeld, Herford penalties t7

Stephen J. BILSBURY, 10 Connie Drive, Shalimar , Florida, USA

Fragile plastic training bullet ■

The invention "relates to a fragile training bullet from Plastic and is particularly aimed at the creation of a training bullet that is so in thermoplastic Material worked. Is that it will hit the target or breaking the ground to avoid the dangerous accidents that come with high-flying ricochets and ricochets are connected.

It has hitherto been customary to provide training cartridges for small weapons and for automatic weapons, which are directly fall apart after leaving the muzzle. To this Purpose is essentially a plastic housing, which is filled with an inert material and sealed with a cap made of the same plastic is. The attempt is made to get in shape and form Approximate weight as close as possible to the actual comparable floor. If this requirement is met, it is possible to use the cartridge in an automatic weapon without damaging the lock and the loading mechanism to use. The operation of the entire firearm mechanism depends on the build-up of a predetermined gas pressure in the powder chamber, which is partly controlled by the weight and shape of the bullet. Furthermore, the projectile must

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remain intact until it leaves the muzzle to avoid damage of the firearm, the result of the filling material coming out of the barrel with the result of a high running wear could occur.

Various designs have been developed in the experiment been designed to cope with these problems., Among these designs are bullets that are axial have extending recesses which cause the housing to be axially torn apart and the filler material to be released. This falling apart of the previously known training projectiles happens immediately after leaving the Run so that no damage over a predetermined. Distance from the muzzle out can. This configuration, of course, results in a system that cannot simulate actual shooting conditions and is of limited use to the users of the exercise facility. Aiming cannot be practiced at all with such training bullets.

It would therefore be particularly advantageous to provide a fragile plastic training projectile that would be resistant upon impact falls apart on a target or on the ground. This type of training projectile would avoid the dangerous accidents Avoid high ricochets and ricochets which in particular the civilian population in the area of exercise areas on airfields or the like. that can be jeopardized usually used for target practice from the air towards the ground. It would also be desirable that the Unit costs of the. frequently used practice bullets for target practice and at the same time the destruction of the run reduce the impact between the bullet guide tape usually made of copper on the Run result. In addition, the practitioner should be given a sense of reality, so that a big one

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Level of interest and enthusiasm for the "exercise evoked." and thus an entertaining and ultimately effective exercise is carried out.

The present invention is concerned with the provision of a fragile plastic training bullet having a Plastic sleeve that includes a fixed head part with a rearwardly extending central area in which a row of discs or platelets are arranged. A pressure plate is arranged at the rear inside the projectile, which is then secured by a plastic cap , can be closed. It can also be a floor guide be provided which is integral with the sleeve and consists of the same material. The projectile remains intact during the eye and disintegrates on impact, so that the danger of high-flying ricochets and ricochets for people and facilities in the target area is eliminated.

It is accordingly an object of the present invention to provide an improved frangible training projectile which which is particularly useful in target practice from the air to the ground and yet does not create extended Requires clearances with regard to possible damage from ricochets or ricochets in the target area.

The invention is also based on the object of a fragile To create training projectile that consists of a plastic housing with an integral projectile guide band has the same material. The projectile only breaks through the impact in the target and avoids the dangerous Coincidences from high-flying ricochets or ricochets. Another object of the invention is to provide a fragile plastic training bullet to create in which the size of the inertial mass, the weight and the center of gravity of the storey slightly changed.

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can be changed in order to be able to adjust precisely to the requirements of a particular ballistic system.

A further object of the invention is to create a plastic training bullet that is relatively light and economical is to be produced and thereby non-strategic Materials processed using well known manufacturing techniques.

Finally, the invention is based on the object of creating an improved training bullet made of plastic, by the firearm barrel damage as a result of the interaction of the bullet guide tape, which was previously made of copper, is significantly reduced with the barrel by the Projectile with a molded one-piece projectile guide band made of plastic.

These and other tasks and objects, features and advantages emerge with great clarity from the following Description of preferred embodiments of the subject matter of the invention in conjunction with the accompanying drawings. They also emerge from the attached claims. Show it

Fig. 1 shows a fragile plastic training bullet according to the invention in the fully assembled state in side view,

FIG. 2 shows a sectional view according to section line 2-2 of FIG. 1 through the plastic housing with an exploded view Representation of the parts to be brought into the housing and connected to it,

Fig.. 3 shows a representation corresponding to FIG. 2 of another Embodiment of a training bullet according to the invention.

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In the drawing is a 'fragile' exercise bullet 13 shown made of plastic, aas preferably made of a thermoplastic Material consists and a projectile guide band 15 made of the same material that surrounds the projectile body. Bas thermoplastic material that makes up the bullet 13 is made, polyethylene, glass-filled nylon, hard polyvinyl chloride or the like. be. Using this Materials with different specific weights make it possible to have the moment of inertia, the weight and the center of gravity of the projectile to vary by selecting the volume and dimensions of the plastic parts accordingly and accordingly the proportions of these parts to the total volume and dimensions of the floor 13 can be adapted in order to achieve the adaptation to the respective specific ballistic requirements. As can be seen from Fig. 2, a sleeve 19 includes a ogival head piece 21 and an elongated rod-like Central section 23, which is. From the head piece extends backwards. The ogival head piece 21 and the rod-like central portion 23 are preferred together with the projectile guide band 15 in one piece made of plastic together. A number of disks 25, for example made of steel, have openings in the center which are dimensioned in such a way that they slide over the rod-like central section 23 of the sleeve 19 can. The number and size of the disks 25 can vary be to thereby control the total weight and the location of the center of gravity of the projectile 13 to even more the To simulate conditions of real shooting with real ammunition. After the discs 25 are arranged, a pressure plate 27 made of steel is inserted into the opening of the sleeve 19 in such a way that the projection 29 of the pressure plate 27 at the rear end of the central section 23 supported. A closure cap 31 made of plastic using ultrasound

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welded into the open bottom of the sleeve 19 to complete the assembly of training floor 13 to be completed. By such welding, a single integral piece is formed, its internal parts are completely sealed to the outside.

For weapons of smaller caliber, for example, this is in ELg. 3 illustrated embodiment is even more suitable. At this Embodiment of a fragile projectile 13 includes a sleeve 33 and an ogival head portion 35 »das the front end of a central opening 36 closes in the a number of plates 37 are arranged. These plates 37 serve the same purpose and have the same function like the disks 25 in the Pig embodiment. 2.

It should be emphasized that although the G-eschoss 13 with a integral part and body area was shown, it also with a separate ogival head part 35 and a integral cap 'could be produced. In this latter embodiment, the platelets 37 would then introduced from the front of the projectile and the ogival head part 35 could then be carried out by means of ultrasound be welded on after assembly. Further, the platelets 37 can have any suitable shape as long as they are symmetrical remain and the required weight and the desired properties of the bullet relating to the center of gravity guarantee. The plates 37 could, for example, have a grooved circumferential surface so that the weight is still could be distributed more effectively.

If the projectile is fired at a target during the exercise on a firing range, the case 19 breaks at Impact, so that the projectile 13 falls apart immediately thereafter. Since the projectile 13 immediately upon contact with The goal breaks are the dangerous coincidences

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high-flying ricochets or ricochets completely eliminated, and the size and location of such a "practice area" becomes much less critical than "before. The sleeve 19 made of plastic "breaks more easily than comparable sleeves made of metal, causing the projectile to fall apart is effected at the desired timing, and also has the merit of a lower manufacturing cost and a lower one Wear in the barrel of the firearm.

The improved fragile plastic exercise bullet according to the invention is provided with thermoplastic sleeves 19 and 33, which also serve as wind protection and the aerodynamic Reduce the air resistance of the projectile and thus the energy loss during the wise to the target to a minimum reduce. The projectile guide band 15 made of plastic surrounds the sleeve 19 and is integral therewith. The bullet guide band interacts with the train in the rifled barrel of the firearm and thereby significantly reduces the friction of the projectile body when it is driven through the barrel bore thereby greatly improving the efficiency of the operation of the firearm.

It can thus be seen that a projectile has been described which is simple in use, easily manufactured can be used and much safer than such bullets on a firing range that is close to inhabited areas. This is achieved without any major wear and tear or risk of damage for the barrel of the weapon is caused when the projectile is driven through there. There is an experimental result before, which shows that the life of a gun barrel of a 20mm cannon, with the training projectile of the Type according to the invention are fired, can be increased by a factor of three. Furthermore, with the plastic bullet

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created according to the invention a highly effective training means, while at the same time avoiding the use of expensive materials (copper) that are difficult to obtain.

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Claims (6)

Claims 1. Fragile plastic training bullet for firing by means of a firearm with a rifled barrel, characterized by a plastic sleeve (19 »33) with an open central area and an ogival head part (21,35) as well as with inside the open means (25,37) located in the middle area for adjusting the center of gravity and the weight of the projectile in such a way that the firing of the projectile has the flight characteristics of real ammunition of the same caliber simulated. 2. Training projectile according to claim 1, characterized in that the means in the open central region of the projectile to set the center of gravity and the weight of the Projectile a plurality of adjacent disc-shaped Include platelets (25-37) that are symmetrical in the open central area of the storey are arranged. 3. Training projectile according to claim 1, characterized in that the means for adjusting the center of gravity and the Weight of the, projectile an integral projectile guide band (15) »which surrounds the outer surface of the plastic sleeve (19) near its rear end, as well as further a rod-shaped central section (23) »which is in one piece with the sleeve (19) and moving backwards starting from the ogival head part (21) extends, as well as further a row of metal disks (25) »the openings in the middle have and slidable on the rod-shaped central portion (23) are arranged, a steel pressure plate (27) which is arranged in the rear region of the sleeve (19) and which has a short rod-like projection (29) extending forward from it and against the rear 509821/0241 End of the middle central section (23) and finally a Kuriststoffverschlußkappe (31), which on the open rear end of the plastic sleeve (19) adjacent to the rear surface of the pressure plate (27) "attached is, wherein the plastic sleeve (19) is designed so that it breaks on impact with a target, whereby the Training floor immediately falls apart. 4. Training projectile according to claim 1, characterized in that the one-piece plastic sleeve (19 »33) made of a thermoplastic Material, namely polyethylene, is made. 5- training projectile according to claim 1, characterized in that the one-piece plastic sleeve (19 »33) made of a thermoplastic Material, namely glass-filled nylon. 6. Training projectile according to claim 1, characterized in that the one-piece plastic sleeve (19 »33) made of a thermoplastic Material, namely hard polyvinyl chloride, is made. 509821/0241