INNOVATION IN THE SMOOTHBORE SEMI-AUTOMATIC TRAUMATIC SHOTGUN LOCK MECHANISM

Abstract

Disclosed is a new lock mechanism that enables the use of low-pressure cartridges in smoothbore semi-automatic hunting shotguns, and includes a lock that connects the barrel and the mechanism and ensures security to prevent the cartridge from exploding outside, a flat spring that allows the lock to be locked to the barrel by lifting the lock upwards and ensuring the lock to move downward with the pressure formed in the barrel, and a bolt carrier which allows back and forth movement of the mechanism with the pressure from the piston.

Description

FIELD OF THE INVENTION

The invention relates to an innovation in the lock mechanism of less lethal hunting shotguns used by law enforcement agencies in the arms industry.

The invention particularly relates to a new gun lock mechanism comprising a lock that allows the use of traumatic rubber bullet cartridges in smoothbore semi-automatic shotguns, a lock that ensures that the cartridge does not explode outside, and a lifting flat spring that lifts the lock upwards and ensures that it is connected to the barrel.

BACKGROUND OF THE INVENTION

Smoothbore hunting shotgun barrels are shotgun parts that are exposed to high pressure with different diameter and length, and certain wall thickness. These are hunting shotguns that do not have grooves (recesses) and sets (protrusions) on their barrels. The operation of the smoothbore gas semi-automatic magazine-fed hunting shotgun is as follows; the mechanism is moved back together with the bolt carrier with the first movement initiated from the bolt lever. With this movement of the mechanism, it allows the movement energy to be stored in the operating spring on the operating shaft and the trigger group to be wound. The mechanism moves quickly forward with the mechanism bolt carrier, push the first cartridge to the barrel cartridge bed, the inflammation system is activated by touching the trigger and then the cartridge explodes. The explosion in the barrel cartridge bed caused by the effect of gunpowder gas burning by the inflammation of the cartridge primer enables the cartridge plug and shot or bullet pieces to move at a high speed in the barrel and leave the barrel. With the severity of the explosion, some of the high-pressure gas formed in the barrel passes through the gas hole in the barrel, creates impact on the fore surface of the piston in the gas chamber, continues until the mechanism dampens the operating spring by means of the bolt carrier and opens the lock, and ejects the empty case. With the opening of the damped operating spring, the mechanism takes the cartridge from the magazine and drives it to the barrel cartridge bed, thus the shotgun becomes ready to shoot again, and this process is repeated automatically every time the trigger is touched until magazine is empty. In public incidents, security forces deterrently use low-pressure shotguns which are called less lethal, traumatic, bean bag or etc. These shotguns use low-pressure cartridges known as rubber plastic and bean bag. Since these cartridges produce less gas pressure compared to normal cartridges, the cartridge lock mechanism is not opened. For this reason, these shotguns, which are called traumatic, require manual loading. Therefore, the product cannot operate automatically and semi-automatically.

In the state of the art, there are mechanism locks developed for the operation of semi-automatic hunting shotguns in low-pressure cartridges as an alternative to these traumatic shotguns which require manual filling. These mechanism locks are placed on a spring system, and the pressure is reduced. Thus, it is ensured that the mechanism is unlocked earlier in lower pressure cartridges. However, these systems have problems such as screws falling due to gravitational force, etc. For this reason, a safer locking mechanism that can be used for a long time is needed.

The applicant's document numbered TR2019/12140 can be given as an example for the state of the art in terms of research conducted in the literature. The aforementioned document is related to the traumatic shotgun lock mechanism that allows the use of traumatic rubber bullet and bean bag or any less pressure cartridges and allows the lock to be released from the body under the gas pressure formed in the barrel thanks to the improvement made in smoothbore semi-automatic hunting shotguns. In the said invention, the traumatic shotgun mechanism lock comprises at least one spring pin, at least one pin spring, spring mounting screw and spring case.

The document numbered TR2022/016836 can be given as another example for the state of the art. The said document is related to the gas discharge system which comprises of the barrel used in smoothbore hunting shotguns and ensuring the discharge of the fired cartridge, the piston that allows the operation of the smoothbore hunting shotgun by acting on the gas pressure created by the fired cartridge, the gas chamber that is fixed on the barrel by means of a ring and ensuring the movement of the pistol by accumulating the gunpowder gas released by the fired cartridge, the O-ring in the gas chamber which prevents gas leakage of the gas chamber, and the gas chamber nut closed to the front of the gas chamber. The said system comprises of a gas hole on the gas chamber, a gas opening lever that opens and closes the gas hole by moving within the gas hole, creates a firing environment for light-weight cartridges while in the closed position, and allows the gas in heavy weights to be discharged from the gas hole by switching to open position during the discharge of heavy-weight cartridges.

As a result, the presence of the abovementioned problems and the inadequacy of the existing solutions made it necessary to make an improvement in the relevant technical field.

These and other objects and advantages of the present invention will become apparent from a reading of the attached specification and appended claims.

BRIEF SUMMARY OF THE INVENTION

The present invention relates to a new locking mechanism developed for smoothbore semi-automatic shotguns in order to eliminate the abovementioned disadvantages and bring new advantages to the relevant technical field.

The main purpose of the invention is to provide a new improved lock mechanism that includes a lock releasing flat spring that can push back using barrel pressure in smoothbore semi-automatic hunting shotguns allowing the use of traumatic cartridges.

The purpose of the invention is to provide a structure containing a releasing flat spring that prevents the movement of the firing mechanism with the barrel pressure formed during firing, lifting the lock upwards and connecting it to the barrel.

In order to achieve the objectives described above, the invention is a new locking mechanism that enables the use of low-pressure cartridges in smoothbore semi-automatic hunting shotguns, wherein the said mechanism comprises:

• • A lock that connects the barrel and the mechanism and ensures security so that the cartridge does not explode outside,
  • A flat spring which enables the locking process to be applied to the barrel by lifting the said lock upwards and allows the lock to move downward with a pressure created in the barrel,
  • A bolt carrier which ensures back and forth movement of the mechanism with the pressure received from the piston,
  • The wedge connected to the bolt carrier, which ensures that the flat spring remains stable and prevents breakages.

The structural and characteristic features and all advantages of the invention will be understood more clearly thanks to the figures given below and the detailed descriptions to be written with reference to these figures. Therefore, the assessment must be made by considering these figures and detailed descriptions.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1: Exploded top view of the parts of the lock mechanism which is subject to the invention.

FIG. 2: Assembled view of the lock mechanism which is subject to the invention.

FIG. 3: Exploded view of the lock mechanism which is subject to the invention.

FIG. 4: Illustration of closing the lock mechanism which is subject to the invention.

DESCRIPTION OF PART REFERENCES

• • 1. Lock
  • 2. Flat spring
  • 3. Bolt Carrier
  • 4. Wedge

DETAILED DESCRIPTION OF THE INVENTION

In this detailed explanation, the preferred alternatives of the locking mechanism of the invention are described only for a better understanding of the subject and without any limiting effect.

FIG. 1 shows an exploded top view of the elements of the locking mechanism which is subject to the invention. A new lock mechanism that enables the use of low-pressure cartridges (/traumatic rubber core or bean bag cartridges) in smoothbore semi-automatic hunting shotguns of the invention comprise a lock (1) that connects the barrel and the mechanism and ensures security to prevent the cartridge from exploding outside, a flat spring (2) that allows the said lock (1) to be locked to the barrel by lifting the lock (1) upwards and ensuring the lock (1) to move downward with the pressure formed in the barrel, a wedge (4) that stabilizes the flat spring (2) and a bolt barrier (3) which allows back and forth movement of the mechanism with the pressure from the piston.

FIG. 2 and FIG. 3 show side assembled and exploded views of the lock mechanism subject to the invention.

The said lock (1) is the security element to prevent the cartridge from exploding outside and connects the barrel of the shotgun and the lock mechanism to each other. The flat spring (2), on the other hand, is the element that releases the said lock (1) and enables the locking process to be carried out. Here, it lifts the lock (1) upwards and connects it to the barrel (to lock the barrel). The bolt barrier (3) of the mechanism subject to the invention is the element which moves the mechanism back and forth with the pressure from the piston.

FIG. 4 shows how the lock mechanism subject to the invention is closed. The aforementioned lock (1) is fixed from the point center and closes with a rotational movement. Here, the lock (1) makes a rotating movement and applies pressure to the flat spring (2). The said flat spring (2) moves downwards with the applied pressure.

The lock (1) is pushed back with the pressure created in the barrel by the firing of the shotgun, this pushed back lock (1) presses against the flat spring (2) to keep it downwards, thus releasing the lock mechanism. Here, since the pressure from the barrel is not sufficient to push the lock mechanism back and eject the empty cartridge, the Bolt Carrier (3) moves back with the pressure from the gas chamber under the barrel with the help of the piston, pushes the lock mechanism to the backward end position and ensures that the cartridge is ejected. Then, the Bolt Carrier (3) takes the full cartridge from the magazine during its return and pushes it into the barrel, and after full closure, the flat spring (2) takes its normal form and releases the lock (1); therefore, locking is ensured again.

In the current technique, the spring and spring case structures used in the lock mechanism would get broken and the screw used fell due to the gravitational force. In the new locking mechanism subject to our invention, the changed spring system, that is, the flat spring (2), provided a better usable system.

The foregoing disclosure and description of the invention is illustrative and explanatory thereof. Various changes in the details of the illustrated construction can be made is the scope of the present invention without departing from the true spirit of the invention. The present invention should only be limited by the following claims and their legal equivalents.

Claims

1. The invention is a new locking mechanism that enables the use of low-pressure cartridges in smoothbore semi-automatic hunting shotguns, wherein the said mechanism comprises:

a lock that connects the barrel and the mechanism and ensures security so that the cartridge does not explode outside;

a flat spring which enables the locking process to be applied to the barrel by lifting the said lock upwards and allows the lock to move downward with a pressure created in the barrel;

a bolt carrier which ensures back and forth movement of the mechanism with the pressure received from the piston;

the wedge connected to the bolt carrier, which ensures that the flat spring remains stable and prevents breakages.