Cartridge and a method of preparing at least one radial incision in the body of the bullet of the cartridge

Abstract

The cartridge consists of a shell (13) with powder filling (16) and a bullet (1), where the bullet (1) comprises a body (2) having a rear base (6) and peripheral walls, in the axis of which is fixed a piercing core (3). The body (2) of the bullet (1) is adapted for controlled detachment, in the area of weakening of its peripheral wall, of at least one of its forward portions after the bullet (1) impacts with the barrier. The body (2) comprises a guiding forward portion (5) and a rear portion (17) of greater diameter, corresponding to the calibre of the gun, for stabilising and guiding the bullet (1) in the gun barrel. The piercing core (3) is lodged with radial allowance in the body (2), in the opening (19) on the front side. Between the forward portion (5) and the rear portion (17) of the bullet (1), the body (2) has a deforming wall (10) with reduced thickness, so that the area where it meets the shouldered rear portion (17) forms the ripper zone of the front portion of the body (2), while the piercing core (3) comes to a point at its front end (8) and the hollow between this front end of the core (3) and the adjacent part of the inner wall of the opening (19) of the body (2) is filled with a malleable plug (4) whose outer surface forms at least the greater part of the impacting surface (20) of the bullet (1). The subject of the invention also involves a method of preparing at least one radial incision in the body (2) of the bullet (1) of the cartridge, during which the rear portion (17) of the body (2) is formed with a greater outer diameter with at least one radial incision (12) of trapezoidal section with symmetrical sides. The body (2) is then extruded, through a stepwise narrowing opening in a calibrating member, to the required lower calibre, by which the material of the body (2) in the area of the radial incision (12) becomes non-homogeneous and deforms so that the front side of the radial incision (12) in the direction of the extrusion straightens until it is at right angles to the axis of the body (2), with a simultaneous increase in the density of the material in this area, and its rear side opens up still more, with a simultaneous decrease in the density of the material in this area.

Description

FIELD OF THE INVENTION [0001] The invention concerns the arrangement of a cartridge with piercing bullet with increased effectiveness in penetrating bullet-proof vests and other ballistic shields, particularly hard barriers such as armoured transport means, special glass etc. DESCRIPTION OF THE PRIOR ART [0002] Expanding bullets are known for pistols, rifles, shotguns and the like, in which the body or jacket of the bullet mushrooms open to a greater diameter on striking a barrier, thus causing a greater effect upon that barrier. This effect is to a considerable degree influenced by the velocity of the bullet and the resistance of the barrier to the impact of the bullet. The front portions of the bullet, for attainment of controlled expansion, are arranged by appropriate methods so that opening of the body of the bullet on impact with the barrier occurs more forcibly and at lower velocities. The bodies of the bullets can be furnished beforehand with outer transverse or longitudinal ...

AI Technical Summary

Benefits of technology

"The invention is a new type of bullet that is designed to detach from its cartridge when it impacts a hard barrier. The bullet has a piercing core that breaks off from the rest of the body when it impacts the barrier. The front portion of the body has a guiding wall to help the bullet penetrate the barrier. The soft material of the plug helps to fix the bullet to the barrier without changing the angle of impact. The bullet is designed to disintegrate quickly and safely, with the piercing core breaking off and the rest of the body separating from it. This design helps to prevent the bullet from glancing off, ricocheting, or rupturing the barrier."

Problems solved by technology

In none of these solutions was the purpose to penetrate a hard material in a barrier, nor was it a question of unfavourable impact angles.

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