RU2213313C2 - Feeding mechanism - Google Patents

Abstract

FIELD: small arms, pump action weapons of bull-pup configuration with two parallel box- shaped magazines. SUBSTANCE: feeding mechanism includes pair of immobile magazines to feed ammunition from two sides of weapon, multiposition drum unit placed in its socket-bearing, in breech part of tubular guide of mobile barrel-lock showing two degrees of freedom of motion and forming releasable joint with drum unit that is equipped with fixing member, when barrel-lock is disconnected, bushing of mobile striker, cartridge separator for selective passage of cartridge from both sides of weapon, multiposition unit fixing barrel-lock through specified angle of turn of barrel around its longitudinal axis, wedge-shaped protrusion of cartridge chamber and recess in muzzle butt of drum corresponding to it, additional spring-loaded slider-guide of cartridge, movable coupling of drum flange with bearing plate of separable block of firing mechanism located in grooves of back plate of guide of barrel-lock, collar of separator with window for passage of fed cartridge, spherical recesses in collar for locking case or feeding device of magazine, movable coupling of muzzle protrusion of tubular guide of barrel-lock and set of interconnected parallel grooves of cylindrical forestock joined to barrel-lock by means of muzzle coupling and fitted with location mark. Given feeding mechanism can be used both in plain-barrel and rifled pump action weapon. EFFECT: increased amount of ammunition of weapon. 5 cl, 7 dwg _

Description

 The invention relates to weapons, in particular to feeding mechanisms for supplying ammunition from two sides of the weapon, and can be used in pump-action multi-purpose weapons (both smooth-bore and rifled) made in a bullpup arrangement with bottom shell extraction and two in parallel established box stores.

 The feeding mechanism is known (A. Zhuk. Handbook on small arms. M.: Military Publishing House, 1993, p. 560; see the 9-mm MP-40 submachine gun; experimental development, Erma company, Germany ) - supply of ammunition from two parallel-mounted box magazines with an adapted weapon receiver.

 The disadvantage of this device is the need for manual lateral movement of the magazine block when emptying one of the stores for reloading weapons.

 The feeding mechanism is known (AB Zhuk, Handbook of Small Arms. M: Military Publishing House, 1993, p. 567; see Pedersen's fixture, model 1918, for the Springfield magazine rifle, model 1903). , USA), which is the closest analogue in technical essence to the claimed object, because the feeding mechanism is made for a pair of fixed magazines with the possibility of supplying ammunition from both sides of the weapon.

 The disadvantage of this device is its inability to pump-action weapons of the bullpup layout with two box-shaped magazines installed in parallel.

 The aim of the invention is to adapt the feeding mechanism for supplying ammunition from two sides of the weapon to a multi-purpose pump-action weapon of the bullpup layout with two parallel box magazines.

 This goal is achieved by the fact that the feeding mechanism contains a pair of stationary box-shaped magazines placed symmetrically to the middle plane of the weapon, for supplying ammunition from both sides of the weapon, a multi-position drum device for the selective supply of ammunition from these two stores, a drummer. What is new is that the multi-position drum device is placed in the support of the bearing seat in the breech of the tubular guide of the barrel-bolt mounted with the possibility of longitudinal sliding and rotation around its longitudinal axis and provided with a detachable connection with the multi-position drum device containing an element of longitudinal fixing of the multi-position drum device when the barrel-shutter is disconnected, the movable striker bushing, cartridge cutter for selective passage of cartridges from two seconds oron arms and multi-position device for fixing rotary-shutter shaft at a predetermined angle of rotation of the barrel, which determines the sequence of ammunition feed to the two sides of arms.

 The detachable connection of the rotating multi-position drum device with the barrel-bolt is formed by a wedge-shaped protrusion-bracket of the breech portion of the barrel facing the cartridge feed window and a corresponding recess of the muzzle end of the multi-position drum device, wherein the wedge-shaped protrusion together with an additional spring-loaded slide placed longitudinally above the drummer sleeve , perform the joint function of a guiding element for loading a rifle cartridge. A rotating multi-position drum device is attached to the weapon through the window of the recoil pad of the weapon with the possibility of fixing it in its bearing seat by means of the movable connection of the flange of the multi-position drum device and the support plate of the removable pad of the percussion mechanism located in the grooves at the heel of the recoil pad of the weapon. The cartridge cutter is made in the form of an elongated collar of the muzzle end of the rotating multi-position drum device, equipped with a window for the selective passage of ammunition supplied from both sides of the weapon, while on the shoulder-cutter spherical openings are made for a locking sleeve or magazine feeder with the possibility of fixing the multi-position drum device to a predetermined angle of rotation with a disconnected barrel-bolt weapons.

 The rotating barrel-shutter is made with the possibility of "free running" without recoil of the cartridge, contains a movable connection of the muzzle protrusion of the barrel-bolt guide and a set of parallel-connected grooves located on the inner surface of the cylindrical forearm, connected to the barrel-bolt by means of a muzzle clutch and equipped with an installation a mark that allows you to control the position of the multi-position drum device of the feeding mechanism, controlled by a rotating barrel-bolt weapon. The spring-loaded slider for guiding the cartridge together with the wedge-shaped protrusion of the chamber is adapted to supply a modernized cartridge for a smooth-bore weapon, the sleeve of which has a slightly pronounced "bottle" shape and an annular groove, for engaging the cartridge extractor.

 Therefore, the solution satisfies the criterion of "novelty."

 Distinctive features, in the claimed combination, exhibit a new property - the ability to selectively supply ammunition from two parallel magazines by means of a multi-position drum device controlled by a rotating barrel-bolt of a weapon, which has two degrees of freedom of movement: longitudinal sliding and rotation around its longitudinal axis.

 Therefore, the solution satisfies the criterion of "significant differences".

 The ability to achieve the goal is ensured by the fact that the feeding mechanism for supplying ammunition from two sides of the weapon (relative to its midline plane of symmetry) is adapted to selectively supply a cartridge (with a different damaging or other effect - to choose from) from any box magazine, from a pair of stores located in parallel , on a multi-purpose pump-action weapon of the bullpup layout with bottom sleeve extraction. In this case, the weapon can be made both in smoothbore and in rifled versions.

 The drawings depict the following.

 FIG. 1 - the position of the feed mechanism in the overall layout of the weapon. Side view.

 FIG. 2 - profile section aa (with figure 1). Shown option for smoothbore weapons.

 FIG. 3 - profile section aa (with figure 1). Shown option for rifled weapons.

 Figure 4 - operation of the feed mechanism. Side view. Shown option for smoothbore weapons.

 Figure 5 - operation of the feed mechanism. Side view. Shown option for rifled weapons.

6 is a profile section bB (with Fig. 1.)
7 is a scan of the inner surface of the cylindrical forearm of the weapon.

 Layout of the grooves of a multi-position device of a rotating barrel-bolt weapon

 The feed mechanism contains a multi-position drum device 1 (Fig. 1-5), located in the bearing seat 2 in the breech of the tubular guide 3, also equipped with guide ribs for the barrel-bolt 4 and vertical grooves (butt plate guide) 5. Also, the drum device is provided : movable drummer 6; sleeve (drummer) 7; the flange of the drum 8 (Fig. 4.) - with emphasis on the base plate of the removable block of the percussion mechanism 29, or, alternatively, an annular groove 8 (see Fig. 5), forming a movable connection with a hook (pads of the percussion mechanism) 9; collar-cutter cartridges 10 with a window for the selective passage of the supplied cartridge; spherical openings (shoulder) 11 for the locking sleeve (or store feeder) at the exit of window 12 of any of a pair of stores. And also for a smooth-bore weapon variant (see FIGS. 2 and 4): a wedge-shaped protrusion-bracket 13 of the chamber, adapted for a modernized cartridge for a smooth-bore gun, and corresponding to the wedge-shaped protrusion 13, the recess (muzzle) of the drum 14. Accordingly, for the threaded version weapons (see Figs. 3 and 5): a wedge-shaped ledge-bracket (chamber) 15 and the corresponding recess (muzzle) of the drum 16, as well as (common for a smooth-bore and rifled version of the weapon) additional slider - guide cartridge 17, placed P odolno and over the sleeve 7 and the striker provided common to the firing pin and slider return spring (compression) 18. Multi-position device (rotary) valve-stem comprises: muzzle protrusion (tubular guide barrel-gate) 19 (Figure 1.); a set of parallel, interconnected, grooves 20 (see scan 7), made on the inner surface of the cylindrical forearm of the weapon 21 (see Fig.6).

 Also shown in the drawings: muzzle clutch 22 (Figure 1), connecting the forend and barrel-bolt weapons; installation mark forearm 23; frame store block 24; box (permanent) shops 25; sleeve box box 26; upgraded cartridges for smooth-bore weapons version 27 (see Fig. 2 and 4); cartridges for a rifled version of the weapon 28 (see Fig.3 and 5); block shock mechanism (on the back of the butt plate) 29; a tubular bracket-pusher sliding trigger 30; push-button switch (whispered barrel-shutter) 31, Fig.1. The ejector device is not shown.

 The feed mechanism operates as follows.

 To feed the cartridge (both in the rifled and smooth-bore version of the weapon), it is necessary to disconnect the hand holding the forearm with the finger of the button, whispered the button lock of the barrel 31 (Figure 1), and the barrel-shutter 4 located in the extreme rear (combat) position by rotating it around the longitudinal axis, set to the desired angle of rotation by means of a cylindrical fore-end (pump action weapon) 21 connected to the barrel-bolt (Fig. 1). At the same time, the multi-position drum device 1, which is connected to the barrel-bolt by means of a detachable connection, is installed, the rotation angle of which ensures the selective supply of the cartridge from only one (of a pair) of parallel box magazines 25 (Figs. 2 and 3), while locking cartridge output 12 of another parallel magazine.

 The detachable connection of the drum device with the control drum (rotating) barrel-bolt provide: wedge-shaped protrusion-bracket (chamber) 13 and 15 (see Fig. 2-5) and, corresponding to its end, the recess (muzzle) of the drum 14 or 16 ( Figure 2 and 4). Next, with the hand holding the forearm of the weapon 21 (Figure 1) and connected to it by the muzzle clutch 22, the barrel-bolt 4, sliding along its guide 3 and having two degrees of freedom of movement: longitudinal sliding and rotation around its axis, is transferred to the extreme front position - charging position. In this case, if the weapon was loaded, the cartridge by means of an ejector device through the window of the barrel-shutter guide is discharged into the cartridge case box 26 (shown in Fig. 4 by an arrow). This solution is applicable when using multi-barrel cartridges (cartridges for smooth-bore weapons).

 The locking of the barrel-bolt, when moving it, at a given angle of rotation is carried out by means of the movable connection of the muzzle protrusion (tubular guide of the barrel) 19 and one (optional) of a set of parallel grooves 20 located on the inner surface of the cylindrical forearm of the weapon. Moreover, a set of grooves connected in parallel to each other contains: a central groove of the barrel-shutter free-wheeling; two symmetrically placed (side) grooves that determine the order in which the cartridge is fed from a pair of magazines, as well as a transverse groove connecting them. All variants of the multi-position device for fixing the rotating barrel-shutter are shown by arrows in FIG. 6 and in the scan of FIG. 7.

 When moving the shutter barrel 4 to the loading position (outermost), the upper cartridge of one of the parallel magazines (equipped with cartridges with the desired damaging or other action) under the action of the spring-loaded magazine feeder sequentially passes through the magazine exit 12 of the magazine and the window (flange-cutter drum) 10 (shown by the arrow in Figure 2) and is automatically installed coaxially to the axis of the chamber (see Figure 4 and 5), because the centering of the sleeves having a "bottle" shape is carried out by means of a wedge-shaped protrusion (chamber) 13 or 15, and a spring-loaded (trough) slider - the guide of the cartridge 17, which is retracted to its extreme rear position when loading the cartridge. In this case, the locking of the drum device 1, at a given angle of rotation, is carried out by means of spherical recesses (collar of the drum) 10 and included in one of these recesses of the sleeve of the upper cartridge of the locked magazine (or its feeder when the magazine is empty).

 When returning the barrel-bolt 4 (Fig. 1, 2, 4) in its combat (extreme rear) position, the wedge-shaped protrusion-bracket (chamber of the barrel) 13 again forms a detachable connection with the notch (muzzle end of the drum) 14, and the cartridge enters chamber (see Figure 1). In this case, the barrel-shutter is automatically locked with a sear in the muzzle neckline of the tubular guide of the barrel-shutter. The weapon is loaded. After the shot, the entire cycle of the feed mechanism is repeated.

 When using the "free wheeling" of the barrel-bolt 4 without feeding a cartridge (used for discharging weapons) the muzzle protrusion (barrel guide) 19 moves along the "central" groove of the forearm of the weapon (see Figure 6). At the same time, to control the angle of rotation of the barrel-bolt, the fore-end mark 23 is used (Figure 1).

 The assembly of the feeding mechanism is carried out in the following order: the drum device 1 through the window of the back plate of the weapon, and the barrel-bolt from the muzzle of its tubular guide 3 (Figure 1). In this case, the annular groove of the rotating drum 8 forms a movable connection with a hook (pads of the percussion mechanism) 9, fixing the drum in its bearing seat (tubular guide) 2 from longitudinal movement, with the barrel shutter disconnected, with the drum 1 resting on the support plate (removable ) pads shock mechanism 29 (Figures 4 and 5), placed in vertical grooves - at the heel of the recoil pad of the weapon.

 This feed mechanism for supplying ammunition from two sides of the weapon allows for a series of shots, each time using cartridges with different damaging or other actions, based on the requirements of a rapidly changing combat situation. At the same time, a multi-purpose weapon can be made both in a smooth-bore version, for example, a service weapon, using the entire spectrum of non-lethal ammunition, and in a rifled version, for example, a non-automatic sniper rifle. In addition, the feed mechanism is adapted to pump-action weapons of the bullpup layout with lower shell extraction, which allows it to be highly compact (as evidenced by sketches) and, accordingly, highly maneuverable, allowing the use of weapons in tight spaces.

Claims (6)

 1. The feeding mechanism, containing a pair of stationary box-shaped magazines placed symmetrically to the middle plane of the weapon, for supplying ammunition from two sides of the weapon, a multi-position drum device for the selective supply of ammunition from these two stores, a drummer, characterized in that the multi-position drum device is placed in the socket stop -bearing in the breech of the tubular guide of the barrel-bolt mounted with the possibility of longitudinal sliding and rotation around its longitudinal axis and equipped with about detachable connection with a multi-position drum device containing an element of longitudinal fixation of a multi-position drum device with the barrel shutter detached, a movable striker bushing, a cartridge cutter for selectively passing cartridges from both sides of the weapon, and a multi-position device for fixing a rotating barrel-bolt to a predetermined angle of rotation of the barrel, which determines sequence of supply of ammunition from two sides of the weapon.  2. The feeding mechanism according to claim 1, characterized in that the detachable connection of the rotating multi-position drum device with the barrel-shutter is formed by a wedge-shaped protrusion-bracket of the breech-barrel barrel facing the cartridge supply window and the corresponding muzzle end of the multi-position drum device, this wedge-shaped protrusion, together with an additional spring-loaded slider placed longitudinally above the drummer sleeve, perform a joint function of the guide for loading the rifle cartridge weapons.  3. The feeding mechanism according to claim 1, characterized in that the rotating multi-position drum device is connected to the weapon through the gun plate of the weapon with the possibility of fixing it in its bearing seat by means of the movable connection of the flange of the multi-position drum device and the support plate of the removable pad of the impact mechanism located in the grooves at the heel of the butt plate of a weapon.  4. The feeding mechanism according to claim 1, characterized in that the cartridge cutter is made in the form of an elongated collar of the muzzle end of the rotating multi-position drum device, equipped with a window for selectively passing munitions supplied from both sides of the weapon, while spherical openings are made on the shoulder-cutter for a locking sleeve or a magazine feeder, with the possibility of fixing a multi-position drum device, at a predetermined angle of rotation with a disconnected barrel-bolt weapon.  5. The feeding mechanism according to claim 1, characterized in that the rotating barrel-shutter is made with the possibility of "free travel" without feeding a cartridge, contains a movable connection of the muzzle protrusion of the barrel-shutter guide and a set of parallel, interconnected grooves located on the inner surface a cylindrical forend connected to the barrel-bolt by means of a muzzle clutch, and provided with a mounting mark that allows you to control the position of the multi-position drum device of the feed mechanism, controlled by rotation an adjustable barrel-bolt weapon.  6. The feeding mechanism according to claim 2, characterized in that there is a spring-loaded slider for guiding the cartridge, which, together with the wedge-shaped protrusion of the chamber, is adapted to supply a modernized cartridge for smooth-bore weapons, the sleeve of which has a slightly pronounced "bottle" shape and an annular groove, for catching the cartridge extractor.

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