DD250986A5 - DOUBLE CHAMBER FLOOR - Google Patents

Abstract

The projectile has an outer shell in succession on a front core and a backward core. The back core is partly surrounded by a cap-shaped inner shell, which is hooked to the outer shell by a lateral impression. When impinging on a soft target, the front end of the outer shell widens radially to zurückzuklappen backwards. The backward core remains in place in the inner jacket inside the outer jacket. The front end of the back core is deformed depending on the impact energy of the projectile. You get a more even bullet effect at different target distances and a defined shape of the mushroomed bullet body. figure

Description

For this 4 pages drawings

Field of application of the invention

The invention relates to a double-chamber projectile for handguns and handguns, in particular hunting rifles, with two in an outer shell successively arranged cores and a rear core on its front and laterally surrounding cap-shaped inner shell.

Known state of the art

Are known hunting rifle bullets containing two successively arranged lead cores with different hardnesses. The anterior softer nucleus is said to disintegrate in the game body and the rearward harder nucleus should remain compact and give a great depth effect with rejects in the body.

These known projectiles have the disadvantage that they act differently on different shot distances. At shorter distances results in too strong Wiidbretentwertung and at longer distances too low a shock effect and energy release. In addition, it may happen that the rear lead core from the shell jacket dissolves. In a known double-chamber projectile of the type mentioned ("Handloader" magazine January / February 1984,32 to 35,63,64), the outer shell includes a cap-shaped inner shell, which covers the front planar end face of the rear core and with its side wall on the When the bullet strikes, the front end of the outer shell mushrooms, allowing the front core to escape from the outer shell, but these bullets have the disadvantage of being able to penetrate at low target speeds (from 500m / s) Disassemble soft target.

Object of the invention

It is the object of the invention to provide a dual chamber projectile which is reliable and efficient in use.

Explanation of the essence of the invention

The invention has for its object to provide a double-chamber projectile for hand and handguns, especially hunting rifles, with two in an outer sheath successively arranged cores and the rear core on its front and laterally surrounding cap-shaped inner shell, which has a good projectile effect on different firing distances has a good shock effect through fast energy release and in which the projectile body mushrooms in a defined manner to achieve a good depth effect in the target.

According to the invention, this object is achieved in that the rear core has a trough at its front and that a rear approach of the front core together with the bottom of the inner shell fills the trough.

In this double-chamber projectile is effected by the compression of the front portion of the rear core a particularly strong radial expansion of this core and the inner shell, whereby the rear core and the inner shell are pressed radially to the outer shell. This creates the desired frictional connection of rear core, inner shell and outer shell by the deformation at the target impact.

During the spreading of the rear core and thereafter, this core can not move in the weft direction relative to the outer shell, so that it can not follow the front core.

The trough preferably has a funnel-shaped shape, d; H. its front diameter is greater than the diameter at the trough bottom, so that there is a rotationally symmetric oblique side wall of the trough. The trough may be, for example, conical, frusto-conical or dome-shaped.

Although a projectile with funnel-shaped depression of the rear core during penetration into the target causes a frictional connection of the rear core, inner shell and outer shell, in such a projectile also a lateral indentation can be provided, which serves as additional protection for holding the rear core and Limitation of the deformation zone of the outer shell is used.

The features of the two variants of the invention described above can therefore be combined with each other.

In the double-chamber projectile according to the invention widening when hitting the target, the front end of the rear core, while the wall of the outer shell is folded outwards and repulsed.

In order to allow a defined expansion of the front region of the rear core, the invention is particularly advantageous in small-caliber projectiles, which have only a small cross section and difficult to deform. Due to the trough-shaped or funnel-shaped shape of the front end of the rear core is achieved that this core expands radially in the desired manner. In großkalibrigen floors, the front end of the rear core may be less strong trough-funnel-shaped or possibly even plan designed.

In continuation of the inventive idea, the outer jacket and the inner jacket are hooked together by at least one lateral indentation.

In such a dual-chamber projectile, the rear core together with the inner shell are held by the lateral depression of the outer shell of this, so as to ensure that the rear core remains in place in the outer shell, while only deformed its front portion in a defined manner becomes. Due to the lateral indentation, the rear area of the outer shell is simultaneously reinforced. This area receives an increased moment of resistance, so that it does not deform. The mushrooming of the outer shell is therefore carried out before the (at least one) lateral indentation.

Preferably, the lateral indentation is a circumferential groove. Alternatively, a plurality of discrete lateral indentations may be arranged around the circumference of the outer shell or there may be a plurality of grooves arranged one behind the other.

An advantage is when the indentation is arranged at the level of the rear end of the inner shell.

Conveniently, the bottom of the inner shell has a central opening.

The double-chamber projectile according to the invention has, on the one hand, a quick response in the target and, on the other hand, a clearly defined projectile body with a large mass results in order to achieve a rejection in the game.

It is possible according to the invention to replace the front core of the projectile with a substantially lead-free material, such as zinc, tin or copper. This prevents the debris from being contaminated by lead. The outer jacket and the inner jacket prevent leakage of lead out of the housing due to the formation of a defined projectile body

rear core. '·

embodiment

The invention will be explained below with reference to exemplary embodiments. In the accompanying drawing show:

1 shows a longitudinal section of a double-chamber projectile of relatively small caliber,

2 shows a longitudinal section of the projectile body of the bullet of FIG. 1,

3 shows a section through a bullet of medium caliber,

FIG. 4 shows the projectile body of the projectile of FIG. 3, FIG.

5 shows a section of a bullet of large caliber,

FIG. 6 shows the projectile body of the projectile of FIG. 5, FIG.

Figure 7: a double-chamber projectile without lateral depression and

FIG. 8 shows the projectile body of the projectile of FIG. 7. FIG.

The double-chamber projectile is suitable for handguns (rifles) and handguns (pistols, revolvers and the like), but is especially intended for hunting rifles.

1, the outer shell 10 consists of a tubular cylindrical portion 11 which is closed at one end by a bottom wall 12 and at the other end has a frustoconical tip 13 which is open at the front. At the rear of the projectile is the rear core 14, which consists of lead. This core 14 has a frustoconical trough 15 at its front end. The cap-shaped inner shell 16 surrounds the core 14 laterally.

In addition, the Inn en coat 16 with its forward facing bottom 17, the wall of the trough 15. The bottom wall 17 has a central opening 18.

The inner shell 16 is made of a deformable, non-tear material whose thickness is substantially less than that of the outer shell 10; 11. The side wall of the inner shell 16 lies all over the inside of the outer shell 10; 11 and the core 14 is in turn the entire surface on the inside of the inner shell 16 and on the bottom 12 of the outer shell 10; 11 on.

Before the rear core 14, the front core 19 is arranged, which is the cross section of the outer shell 10; 11 completely filled. The rear end of the core 19 is located in the region of the central opening 18 directly to the material of the core 14 at.

The rear surface of the core 19 is designed so that it follows the outer contour of the bottom wall 17, so that the cores 14; together with the inner shell 16 fill the volume of the outer shell 11 completely and free of cavities.

Only at the front end of the tip 13 is a cavity 20 which is not filled by the material of the core 19

At the level of the rear end of the inner shell 16 of the outer shell 11 is deformed by a depression 21 in the form of a continuous and continuous cross-section groove. The indentation 21 is so deep that it extends into the core 14, so that the inner shell 16 receives a recess 22 which is pressed into the core 14. The end 23 of the inner shell 16 is located at the point at which the rear end of the indentation 21 on the inside of the outer shell 10; 11 forms a fold line with the rear cylindrical portion of the outer jacket 10. The median plane of the indentation 21 is located below the mean height of the core 14;

Upon penetration of the projectile into a Weichziei the outer jacket 10 widens; 11, starting from the central opening 18 in its tip 13, radially and folds to the rear.

The rear core 14, by the indentation 21 via the inner shell 16 is a positive connection with the Außenmantei 10; 11 has deformed in the region of the funnel-shaped trough 15, which is flattened as shown in FIG. 2 and widens radially outward. In this case, the full-surface contact between the outer surface of the core 14 and the cap-shaped inner shell 16 is also retained in the region of the bottom wall 17.

The peripheral region of the core 14 surrounding the funnel-shaped depression 15 therefore forms a deformation zone which absorbs part of the projectile energy and on the other hand holds the expanded core 14 by radial expansion. Due to the radial widening of the front end of the core 14 and the inner shell 16, a projectile body is formed from the rear part of the outer shell 10; 11 and the inner shell 16 is clearly defined. The deformation zone causes a deformation stop, which is effective regardless of the shot distance, so that the rear core 14, even at low shot distance not from the outer shell 10; 11 can escape. In addition, the indentation 21 is a limit to the Aufpilzung of the outer shell 10; In any case, therefore, the positive and non-positive connection between the outer shell 10; 11 and inner shell 16 obtained or a frictional connection, regardless of the presence of the indentation 21, produced.

Instead of the indentation 21 can also, for example, from the inside of the outer shell 10; 11 protruding bead be provided while the outside of the outer shell 10; 11 is smooth. But this requires an increased production cost for the projectile. Also, other types of connection between the rear end of the inner shell 16 and the outer shell 10; 11 are possible.

The embodiments of Figs. 3 and 4 or 5 and 6 differ only slightly from that of Fig. 1 and 2. Therefore, the following description of these further embodiments is limited to the explanation of the differences from the first embodiment.

The projectile of Figures 3 and 4 has a central caliber, wherein the cores 14; 19 have a larger diameter. The conical trough 15 is therefore shallower than in the first embodiment and not provided with a central opening. As FIG. 4 shows, the front end of the rear core 14 also forms a deformation zone in which the material of the core 14 deviates radially outwards and presses against the section 11 of the outer jacket 10, around the core 14 together with the inner jacket 16 clamped in the outer jacket 10; 11 hold.

Figures 5 and 6 show a large caliber projectile in which the core 14 has a better deformation readiness due to its larger cross section. The front end side of the core 14 is in this case formed flat and it extends at right angles to the longitudinal direction. The inner shell 16 accordingly has a bottom plane wall 17. In the projectile shown in Figure 7 no indentation 21 is present, as in the previous embodiments. The trough 15 of the rear core 14 has the shape of a spherical cap and the bottom wall 17 of the inner shell 16 is adapted to the trough shape so that it hugs the entire surface 15 in the trough. The rear wall of the front core 19 nestles against the bottom wall 17 from the outside.

As shown in Figure 8, the portion 11 of the outer jacket 10 is everted when hitting the target to the outside, while the rear portion of the outer shell 10; 11 essentially retains its shape. By pressing the rear end of the front core 19 into the trough 15 of the rear core 14 is radially expanded in its front region, so that it presses to an increased extent on the inner shell 16 against the outer shell 11 and is thereby held in a non-positive manner. Therefore, when the front core 19 has penetrated into the target, the rear core 14 can not escape from the outer shell 10; 11 escape and the front core 19 not without entrainment of the deformed outer shell 10; 11. follow.

In all embodiments it is important that the core has my deformation zone. The deformation behavior of this zone depends on

The execution of the outer shell 10; 11

The projectile cross-section of the rear core 14,

The execution of the inner shell 16,

- the execution of the deformation zone.

These criteria must be coordinated in the projectile development.

Claims (6)

1. Double-chamber projectile for hand and handguns, in particular hunting rifles, with two in an outer shell successively arranged cores and the rear core on its front and laterally surrounding cap-shaped inner shell, characterized in that the rear core (14) at its front a Trough (15) and that a rear approach of the front core together with the bottom (17) of the inner shell (16) fills the trough (15). 2. Double-chamber projectile according to claim 1, characterized in that the outer casing (11) and the inner casing (16) by at least one lateral indentation (21) are hooked together. 3. double-chamber projectile according to claim 1, characterized in that the lateral indentation (21) is a circumferentially encircling groove. 4. double-chamber projectile according to claim 1 or 3, characterized in that the indentation (21) is arranged at the level of the rear end of the inner jacket (16), 5. Double-chamber projectile according to one of claims 1 to 4, characterized in that the bottom (17) of the inner shell (16) has a central opening (18). 6. double-chamber projectile according to one of claims 1 to 5, characterized in that the front core (19) consists essentially of non-lead-containing material.