WO2010077213A1

WO2010077213A1 - Rifled shotgun cartridge

Info

Publication number: WO2010077213A1
Application number: PCT/TR2009/000065
Authority: WO
Inventors: Ibrahim Colak
Original assignee: Ibrahim Colak
Priority date: 2008-12-29
Filing date: 2009-05-13
Publication date: 2010-07-08
Also published as: TR200809908A2

Abstract

The cartridge case of a shotgun cartridge is provided with internal rifling and the slug is provided with mating external rifling, in order to enhance the reach.

Description

RIFLED SHOTGUN CARTRIDGE

The invention relates to providing reach of the rifled (spiral recessed) slug which will be put into shotgun cartridges to a longer range by making rifles (spiral recesses and ridges) in the internal wall of the said shotgun cartridges used in hunting and, to providing a better hitting thereof the target by moving more smoothly.

In structures of present cartridges, rifled slugs are used widespreadly. When these cartridges are used, the gunpowder charge in them and the distance that the rifled slug covered have not been found adequate and higher success is aimed in finding the distance and the target. In present systems, rifles (spiral recesses and ridges) with helix are only on the rifled crude lead slug. After gunpowder, wad is put into the case and after wad, there is rifled slug. Gunpowder pushes the wad and the wad pushes the rifled slug by pressing it. Therefore, rifled slug covers distance by turning by means of the helix rifles (spiral recesses and ridges) thereon in the presence of air friction. In this system, powder effect is absorbed in the wad. Although going by turning is successful, it is not as successful as the system which we designed.

Another usage style is that rifles (spiral recesses and ridges) are inside the barrel of the rifles or guns. With the explosion effect of the powder, rifled slug coated in copper or brass which goes out from the flat case passes through the rifles (spiral recesses and ridges) which are in the shape of helix by being pressed. In the meantime, it gains the habit of going by turning around its own axis. Rifled slug which gets heated by powder heat, explosion pressure effect, pressure effect occurred when passing through the rifles (spiral recesses and ridges) and a high friction extends in the air by turning and the distance and hit power thereof is quite big compared to unrifled (unrecessed) barrel since it covers distance by turning.

With this invention, it is aimed to provide a shooting distance which is similar to that of the rifled barrel together with hit power. This invention can be used for military purposes as well as hunting purposes. It can be preferable since its case costs will be more inexpensive and the weights thereof will be lighter compared to those used in military. In addition, since it will eliminate the requirement of rifle (spiral recess and ridge) in rifle, it can be possible to convert simple shotguns to military rifles.

Thus it can be manufactured more easily for military purpose; inexpensive shotgun and light and inexpensive rifled slug case can be made. Moreover, with this system other applications can be made for military purposes.

Because of all these features, it can be called as rifled (spiral recessed and ridged) cartridge.

Accompanying drawing for the description of the Invention

Figure - 1 : General view of the cartridge.

Accompanying reference numbers for the parts in the accompanying drawing

1. Cartridge end

2. Primer

3. Cartridge end wad

4. Gunpowder 5. Ring of rifled slug

6. Rifled slug

7. Slug rifle (spiral recess)

8. Slug rifle (spiral ridge)

9. Rifled slug tip 10. Internal rifle (spiral recess) of cartridge

11. Internal rifle (spiral ridge) of cartridge

12. Cartridge tip With this invention, the gunpowder explodes upon firing the primer (2) which is located to the cartridge end (Figure -1) (1) and the cartridge end wad (3). Wad is not put between gunpowder (4) and rifled slug (6). Rifled slug (6) which is with helix rifle (spiral recess) (7)- rifle(spiral ridge)(8) or which has diagonals tries to move the rifled slug with the gunpowder explosion and with pressure by engaging(fitting) with helix rifle (recess) (10)- rifle (ridge) (11) which are from one end to other in the internal wall of the cartridge case that surrounds it or by engaging with diagonals without air gap. With internal pressure effect, the rifled slug which gets out from the rifled slug ring (5) which surrounds the case from outside and which tightens the rifled slug meets with the resistance of the helix rifle (spiral recess) (10) - rifle (spiral ridge) (11) and covers distance in them by rotating. Since helix angle will generate resistance for proceeding of the rifled slug in the rifles (spiral recesses and ridges), it will increase the internal pressure of the cartridge generated by explosion of the gunpowder. Rifled slug which has helixes that engage with the helixes in the internal wall of the cartridge is coated with a copper or similar substance which is harder than lead. The cartridge tip (12) is closed and with cut tracer; there is not anything between rifled slug and cartridge tip, in other words it is empty. By means of the sharpness of the rifled slug tip (9), rifled slug comes out by blowing out the cartridge tip (12).

With this invention, it is aimed that rifled slug goes to a remoter place and reaches the target in a more exactly way.

Claims

1. Cartridges, wherein they include at least one internal rifle (spiral recess) (10) of cartridge which is from one end to other in the internal wall of the cartridge case and which is in the shape of helix, at least one internal rifle (spiral ridge) (11) or diagonal of the cartridge; rifled slug (6) which has helix rifles (spiral recesses) (7) - rifles (spiral ridges) (8), ring of rifled slug (5) which surrounds the case (cartridge) from outside and which tightens the rifled slug; gunpowder (4) and cartridge tip (12)

2. Cartridges according to Claim 1 , wherein the helical rifles (spiral recesses) (7) - rifles (spiral ridges) (8) of the said rifled slug (6) and helical rifles (spiral recesses) (10) - rifles (ridges) (11) in the internal wall of the plastic case engage (fit) with each other without air gap.

3. Cartridges according to Claims 1 and 2, wherein there is wad between gunpowder (4) and rifled slug (6) or there is space between them

4. Ring of rifled slug (5) according to Claim 1, wherein it is metallic.

5. Rifled slug (6) as described in one and/or a few of the preceding claims, wherein it is lead and/or it is coated with copper etc materials which are harder than lead.

6. Cartridges according to Claim 1, wherein the cartridge tip (12) is closed.

7. Cartridges according to one and/or a few of the preceding claims, wherein the interspace of the said rifled slug (6) and cartridge tip (12) is empty