RU229511U1 - SMOOTH-BORE GUN WITH DRUM MAGAZINE - Google Patents

Abstract

The utility model relates to the weapon technology of firearms intended for hunting, the main solution of the utility model is the exclusion of the breakthrough of powder gases at the moment of the shot between the rotating drum and the barrel bore, unlike guns of similar revolver-type designs.

Description

The utility model relates to firearms technology.

The prototypes are based on the patented models: US 4,709,617. Patent date. 12/01/1987. and US patent 1,487,722. Patent date. 03/25/1924. Both models have a longitudinally sliding barrel bore and a rotating drum with cartridges, which functions as a chamber, the segments of the chambers in the drum when rotating coaxially with the barrel bore, at the moment of firing the barrel bore and the drum are joined in a timely manner. A technical drawback with such a scheme is the breakthrough of powder gases at the junction between the barrel bore and the drum-chamber at the moment of firing, US patent 4,709,617 offers a solution: between the barrel bore (pos. 30) and the drum (pos. 22. Fig. 21) the junction between pos. 76. and pos. 166 by opening the mouth of the cartridge case at the moment of the shot, twisting the cartridge case star, since this method of twisting covers more along the length with a ring twist of the cartridge case, the joint is not enough to cover. Practice shows that with any twist, the plastic cartridge case has the property of bursting when the twist opens, which leads to a partial breakthrough of gases at the joint between the barrel bore and the drum, since it is this part of the cartridge case that is subject to destruction and it also covers the place of the gas breakthrough. Model of US patent 1487722: a solution for a gas breakthrough between the barrel bore and the drum is proposed. The barrel bore (pos. 1. Fig. 2) during the return movement, the drum element (pos. 23) freely partially enters the corresponding part of the barrel bore 1 (Fig. 3). With such a conjugation of the barrel bore (pos. 1) and the drum element (pos. 23), which performs the function of the chamber (Fig. 3), a gap is required between them, which facilitates a partial breakthrough of powder gases during firing. The disadvantage of this design is the need for precise adjustment of the mating parts, on which the loss of energy and partial release of gases onto the hand holding the fore-end depend.

In the proposed utility model, with the same revolver-type design as the prototypes: a longitudinally sliding barrel and a rotating drum. The technical result is the complete elimination of the breakthrough of powder gases due to the traditionally solid barrel, the chamber and the barrel bore are one single part, the barrel during the return movement back with the breech part enters the drum chamber, in which the cartridge is located, held by guide trays, with further movement of the barrel, the breech part enters the drum chamber along its entire length until the cartridge is completely sent into the chamber at the moment of firing, powder gases are ejected normally through the muzzle, since the chamber and the barrel bore are one whole part and have no joint between the elements of the barrel bore and the drum. The rotating drum serves as a magazine for feeding the cartridge into the chamber and does not have chamber elements. The cartridge case is extracted by extractors located in the drum chamber.

Drawings 1-11 are presented.

Positions: 1 - Barrel, 2 - Drum, 3 - Tray, 4 - Drum Groove, 5 - Rivet Fastening Point, 6 - Cartridge Extractor, 7 - Drum Chamber, 8 - Cartridge, 9 - Breech.

Fig. 1, 2 - General view of the longitudinally sliding barrel forward and backward.

Fig. 2, 3, 4 - Detailed cycles of loading a cartridge into the chamber: initial, intermediate, final.

Fig. 6, 7, 8 - Detailed cycles of the barrel stroke.

Fig. 9, 10, 11 - Extraction and retention mechanism when feeding a cartridge into the chamber.

The gun has a movable barrel 1, a forward-backward rotating drum 2 (Fig. 1, 2 - general view). During the initial movement of the barrel 1 (Fig. 6), the drum 2, in which the drum chamber 7 is located, is located on the same axis with the barrel, during further movement, the intermediate cycle (Fig. 7), the barrel 1 with the breech part 9 has the ability to enter the chamber of the drum 7 along the entire length of the drum 2 (Fig. 8) at the corresponding diameters, the final cycle (Fig. 3, 4, 5) shows the moment of the cycles of sending the cartridge into the chamber when the barrel 1 with the breech part enters the chamber of the drum 7 (Fig. 3, p. 3).

Cartridge 8 is held by trays 3 (Fig. 9). During further movement of the barrel, the intermediate cycle (Fig. 4) cartridge 8, held by trays 3, enters the chamber of the barrel, after which the end breech of the barrel presses trays 3 (Fig. 5), which have the property of a flat spring (Fig. 11), enter the grooves of the drum 4, without interfering with the further movement of the barrel 1.

Next, the cartridge is completely fed into the chamber - the final cycle (Fig. 5). Image Fig. 9. Cartridge 8 is held by trays 3 located in the chamber of the drum, which is coaxial with the chamber of the barrel. The trays are made of spring steel (Fig. 11) and are attached to the drum 2 with rivets (pos. 5. Fig. 9), and are capable of completely entering the grooves of the drum 4 (Fig. 10) when pressed. Extractors 6 (Fig. 10) are located in the chamber of the drum and are designed to extract the cartridge case from the chamber when the barrel moves forward.

Claims (3)

1. A shotgun with a drum magazine, comprising a movable barrel, a rotating drum with chambers for cartridges that are coaxial with the chamber of the barrel, characterized in that the bore of the barrel and the chamber are a single part and have no joint between them, the barrel is designed with the possibility of full entry of the breech part into the chamber of the drum. 2. A shotgun with a drum magazine according to paragraph 1, characterized in that spring steel trays with the ability to hold cartridges and extractors are installed in the chambers of the drum for placing cartridges. 3. A gun with a drum magazine according to item 2, characterized in that the trays are attached to the drum and are designed to enter the grooves of the drum.