RU2797067C1 - Short stroke pump gun - Google Patents

Abstract

FIELD: firearms.

SUBSTANCE: short-stroke pump-action shotgun contains a reloading mechanism. The mechanism contains gears of different diameters located on the same axis, long and short guides for gears. The gear wheel with a large diameter is connected to a long tension guide, the wheel with a smaller diameter is in contact with a short tension guide. The forearm is made with the possibility, when moving back and forth, to act on the bolt handle and a short tension guide to move by 50 mm. The rotation of the small wheel causes the large wheel to move a long tension guide by 120 mm, extract the cartridge case, send new ammunition.

EFFECT: increase in the reload speed, increase in the accuracy of shooting, and a decrease in the effort for reloading.

15 cl, 8 dwg

Description

Technical field

The present invention relates to a pump-action shotgun with a short stroke (working distance) containing a mechanism that results in shortening the reload path and reload time by approximately 65 percent. When shooting with a pump shotgun with a short stroke (working distance), faster repetition can be achieved, while with this shotgun better accuracy and higher muzzle velocity can be achieved.

Prior Art

The pump-action principle is a turning operation in a hand-loading firearm carried out by a sliding mechanism after the firing process to extract the spent ammunition, namely a rifle cartridge, each time and to fire the next cartridge into the chamber. The pump-action principle implements the cycle by moving the forearm back and forth after the shot. The fore-end is moved by a piece called the actuating rod, which secures the breech block to the rail. She goes through the steps of the bolt process and makes it move along with the forearm. There are two movements for reloading the gun. First, the forearm is pulled back. This first opens the breech and then as the breech moves back it ejects the fired rifle cartridge or ammunition. When the handguard reaches the end of the working distance from behind, it is pushed in the opposite direction, namely forward. It pulls the bolt with it until the bolt is fully closed again in the forward position. During its forward movement, the bolt takes new ammunition or rifle cartridge from the magazine or tube magazine and pushes it into the chamber and locks its position. Thus, the gun is ready to fire again.

Pump action shotguns are hand action shotguns. All modern pump-action shotguns contain a rail-mounted handguard, and it extends back the same total distance of the rail device to disengage the rail and extract a fired shotgun cartridge or ammunition and chamber the next one.

In the prior art, US 2015/0113848 A1 relates to a firearm comprising the following: a barrel, a handguard located around the barrel; a manual pump-action reloading mechanism, wherein the pump-action reloading mechanism comprises a drive device held in the hand and the main part of the forearm of the stock, the main part of the forearm of the stock is located around the barrel between the handguard and the barrel, and the drive device held in the hand is connected to the main part of the forearm of the stock for control pump action recharge mechanism.

There is currently a need for a pump action shotgun that overcomes the shortcomings of the prior art and the insufficiency of the necessary elements in existing solutions to realize improvements in the related art. The present invention relates to a pump-action shotgun with a short stroke (working distance) containing a mechanism that shortens the reload path and therefore the reload time by moving the gear on the guides.

SUMMARY AND OBJECTS OF THE INVENTION

The present invention relates to a short stroke (working distance) pump-action shotgun in the form of a shotgun and a rifle, containing a gear wheel to shorten the reloading path.

In the present invention, it is not necessary to push the forearm pump back the same distance of the breech length during the back and forth action. Because the smaller diameter wheel rotates the larger diameter wheel on the gear wheel by a short movement of the actuating rod, and it works on a long tension rail that moves the shutter device backwards.

The aim of the present invention is to reduce the movement and path of the forearm, and hence the reload time. There is a gear wheel that rotates slightly but exhibits significant movement to achieve the faster back and forth action possible in the pump action shotgun according to the invention.

The specified gear shortens the path, and therefore the time (reload time), in all pump-action shotguns.

The present invention has the following advantages:

- higher repetition (reload) rate when shooting,

- better accuracy and higher rates of fire when shooting with little movement and impact resulting from gun vibration,

- enabling the shooter to move his/her hand during the draw and reload stages of the gun with less effort and complexity.

DESCRIPTION OF FIGURES

In FIG. 1. shows a perspective view of a pump-action shotgun.

In FIG. 2. shows an exploded view of a pump-action shotgun.

In FIG. 3. shows a view of a pump-action shotgun during the reloading process.

H fig. 4. shows a view of a pump-action shotgun, which illustrates the principle of operation of a gear wheel on tension guides.

In FIG. 5. shows a right side view of a pump-action shotgun.

In FIG. 6. shows a left side view of a pump action shotgun.

In FIG. 7. different types of pump-action shotgun gear are presented.

In FIG. 8. is a view of a pump action shotgun illustrating a short tension guide and a long tension guide.

Description of the Invention Components

The components in the figures are numbered so as to provide a better understanding of the pump shotgun according to the invention, and a description of each numerical designation is given below:

1 Trunk thirty screw 2 ball fly 31 Nut pin 3 Shutter release 32 handguard 4 barrel cover 33 bolt handle 5 Receiver 34 Absorber 6 Gear system 35 Sealing ring forearm 6a Gear wheel with large diameter 36 Shop 6b Gear wheel with smaller diameter 37 Stock set screw 7 holding pin 38 Lodge 8 Mechanism 39 Fuse 9 Drummer 40 Fuse Spring Capsule 10 Hammer spring 41 Fuse spring eleven Hammer pin 42 Fuse pin 12 receiver lever 43 Trigger guard 13 receiver pin 44 Trigger guard pin 14 Receiver lever pin 45 Trigger guard pin spring 15 Shutter front 46 Shop button 16 Ejector 47 Store button spring 17 pusher spring 48 Store Button Stud 18 Pusher 49 locking lever 19 Pusher pin 50 Lock lever spring 20 Ejector pin 51 Trigger 21 Ejector spring 52 trigger pin 22 barrel sleeve 53 trigger spring 23 barrel clutch pin 54 Internal trigger 24 Long tension guide 55 Internal trigger spring 25 Short tension guide 56 trigger 26 Actuating rod 57 trigger pin 27 Rod pin for actuation 58 trigger spring 28 Bolt handle pin 59 trigger spring capsule 29 Screw for nut

Detailed description of the invention

The present invention relates to a pump-action shotgun with a short stroke (working distance) containing a mechanism that shortens the reloading path, and hence the reloading time, by moving a gear system (6) operating concentrically and containing gears with two different diameters, while pump action shotgun with a short stroke (working distance) is characterized in that it contains a system (6) of gears, which allows you to shorten the movement and path of the forearm in pump action shotguns, and therefore also reduce the reload time, and which is fixed to the receiver (5) holding pin (7), working on a long tension guide (24) and a short tension guide (25), and which operates concentrically and contains two gears of different diameters. Said gear system (6) comprises two different gears with two different diameters on a long tension guide (24) and a short tension guide (25). Figure 4 shows how said gear system (6) is positioned and how the gear system (6) comprising a gear wheel (6b) with a smaller diameter and a gear wheel (6a) with a larger diameter operates in the gear system (6) .

The specified pump-action shotgun (hunting gun or rifle) may be suitable for any caliber available on the firearms market. Said gun may be a rifled gun or a smooth bore gun.

The pump-action shotgun contains a system (6) of gears between a short tension guide (25) attached to the bolt handle (33) and a long tension guide (24) that moves the bolt (8). The gear system (6) comprises two gears with different diameters, namely a gear (6b) with a smaller diameter and a gear (6a) with a larger diameter. The smaller diameter gear (6b) runs on a short tension guide (25) attached by means of the bolt handle (33) to the forend (32). A gear wheel (6a) with a large diameter is connected to a long tension guide (24) attached to the mechanism (8) and moving it.

The principle of operation of the pump-action shotgun according to the invention includes the following steps:

i. moving the forearm (32) back by the shooter for a back and forth action that causes the bolt handle (33) mounted on the forend (32) and attached to the short tension rail (25) to move back approximately 50 mm,

ii. rotation of the gear wheel (6b) on the short tension guide (25) and the transfer of motion to the large diameter gear wheel (6b) running on the long tension guide (24) when the bolt handle (33) begins to move backward due to the retraction of the forearm (32) back,

iii. closing the breech by moving the mechanism (8) fixed on the long tension rail (24) back approximately 120 mm and extracting the spent ammunition by this movement,

iv. opening the gun and bringing it to readiness for sending new ammunition into the chamber,

v. moving the forearm (32) forward again about 50 mm, which causes the mechanism (8) to move forward 120 mm and also chamber new ammunition from the magazine (36),

vi. closing the gun and making it ready to fire.

Figures 5 and 6 show the back and forth action from left to right in step (i).

As a result of the operation of the mechanism of the pump-action shotgun according to the invention, the mechanism (8) attached to the long tension rail (24) moves a shorter distance than in the standard back and forth action, and this provides the shooter with approximately 65 less force. percent compared to modern pump-action shotguns. In the present invention, moving the forearm (32) by only 50 mm is enough to move the mechanism (8) fully back about 120 mm (up to moving back) to remove the ammunition.

In the present invention, the pump comprises a short tension guide (25) and a long tension guide (24) working together with a double diameter gear system (6). Thanks to the mechanism of the gear system (6), only 50 mm of movement is enough to perform a back and forth operation instead of the existing larger back and forth action. The same movements, but in the opposite direction, perform the function of feeding / sending a new ammunition or rifle cartridge into the chamber and moving the bolt (8) to the closed position in the barrel (1).

In one embodiment of the present invention, the gear system (6) is made of steel, however, it can be made of a different type of material. The gear system (6) may be integral or may contain one or more components.

In one embodiment of the present invention, diameter 6b is in the range of 5-15 mm, preferably 9.5 mm, and diameter 6a is in the range of 5-35 mm, preferably 22 mm.

In one embodiment of the present invention, the total length of the gear system (6) is in the range of 5-50 mm, preferably 29.4 mm.

In one embodiment of the present invention, the length of the tension rods between the longer guide (24) and the shorter guide (25) is in the range of 20-150mm.

In one embodiment of the present invention, the long tension guide (24) and the short tension guide (25) are made of steel. Both guides may be integral and may contain two or more components.

The total length of the short tension guide (25) is 230 mm and the total length of the long tension guide (24) is 297 mm.

Claims (15)

1. Pump action shotgun with a short stroke - a working distance with a shortened reloading path and therefore a reduced reloading time, characterized in that it contains a system (6) of gears, which allows you to shorten the movement and path of the forearm in pump action shotguns and, therefore, also reduce reloading time, and which is fixed to the receiver (5) by a retaining pin (7), working on a long tension guide (24) and a short tension guide (25), and which operates concentrically and contains two gears of different diameters. 2. Pump-action shotgun according to claim. 1, characterized in that the pump-action shotgun is a pump-action shotgun with a rifled barrel or a smooth barrel. 3. Pump-action shotgun according to claim 1, characterized in that the pump-action shotgun is a rifle with a rifled barrel or a smooth barrel. 4. Pump-action shotgun according to claim 1, characterized in that the gear system (6) is a single piece or contains two or more components. 5. Pump-action shotgun according to claim 1, characterized in that the gear system (6) comprises a gear wheel (6a) with a larger diameter and a gear wheel (6b) with a smaller diameter. 6. Pump-action shotgun according to claim 4, characterized in that the diameter of the gear wheel (6b) with the smaller diameter is in the range of 5–15 mm. 7. Pump-action shotgun according to claim 5, characterized in that the diameter of the gear wheel (6b) with the smaller diameter is 9.5 mm. 8. Pump-action shotgun according to claim 4, characterized in that the diameter of the gear wheel (6a) with the larger diameter is in the range of 5–35 mm. 9. Pump-action shotgun according to claim 7, characterized in that the diameter of the gear wheel (6a) with the larger diameter is 22 mm. 10. Pump-action shotgun according to claim 1, characterized in that the total length of the gear system (6) is in the range of 5–50 mm. 11. Pump-action shotgun according to claim 9, characterized in that the total length of the gear system (6) is 29.4 mm. 12. Pump-action shotgun according to claim. 1, characterized in that the long tension guide (24) and the short tension guide (25) are made in the form of a single piece or contain two or more components. 13. Pump-action shotgun according to claim 1, characterized in that the long tension guide (24) and the short tension guide (25) are made of steel. 14. Pump-action shotgun according to claim 1, characterized in that the length of the tension rod on the long tension guide (24) is in the range of 20–150 mm. 15. Pump-action shotgun according to claim 1, characterized in that the length of the tension rod on the short tension guide (25) is in the range of 20–150 mm.

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