EP0727034B1 - Fire-arm of the rocking, large bore double-barrelled type - Google Patents

Abstract

The disclosed fire-arm is characterized in that it is provided with a handle (11) acting as a grip and presenting at its top portion a single reversed trigger (2), said handle being arranged in alignment with the barrel or barrels.

Description

The invention relates to the technical sector of launchers for the firing of large caliber projectiles.

This type of weapon is perfectly known to a person skilled in the art. However, existing models are generally large in size and are not designed to be easily transportable in compact cases. In addition, to allow good support to the shoulder when firing, the butt of the weapon must have a special shape so that the entire weapon is not very compact or ergonomic. Such a design requires having the detent (s) in the lower part and equipping the weapon, generally at the level of the barrels, with a holding handle.

By patent FR-A-2110907, the description of which is taken from the preamble of independent claim 1, a large caliber firearm is known comprising a barrel and a handle having in the upper part a single inverted trigger disposed in alignment with the barrel. This document is for a specially designed weapon with a single barrel.

The present invention relates to a particularly compact and ergonomic large caliber firearm, in particular with superimposed double barrels tilting at 180 ° designed so as to allow, as an option, the mounting of a third small caliber rifled rifle firing a powerful munition of handgun for a short model or with a grazing trajectory for a long model with stock, the weapon being equipped with a unique trigger even with three barrels.

Unlike the systems usually used by police or law enforcement, the invention allows a variety of immediately available means ensuring a response or graduated intervention.

The design of the two models according to the invention, fist and shoulder, allows the use of boxes for a very compact transport, for example 46 x 24 x 8 cm (45 cm shoulder model of cannons) and 24 x 24 x 8 cm (fist model 20 cm from cannons).

All projectiles fired in large caliber guns use the same flexible plastic case, resistant to the low pressures of propellant gases from a chambered blank cartridge in a diffuser open to nominal caliber axially or perpendicularly, which is manually positioned back of the main cartridge.

The propellant distribution device and their low pressure allow the firing of projectiles with fragile envelopes, which reduces the mass of structure by increasing the capacity in active products of grenades with neutralizing effects while avoiding the formation of dangerous splinters during the use of the pyrotechnic disperser.

According to a characteristic at the base of the invention, and to solve the problem posed of facilitating transport and obtaining a compact weapon, in the case of a superimposed double barrel, the handle is arranged in coaxial alignment with the barrels without overflowing in height the overall coast of said barrels, the barrels being folded angularly by 180 ° to be positioned in juxtaposition and very substantially parallel to the handle acting as a butt.

Another problem which the invention proposes to solve is to be able to fire any of the shots from the one and only trigger.

For this purpose, the single inverted trigger is subject to two levers mounted at right angles, which actuate one or the other of the corresponding triggers, depending on the positioning of a selector.

There are also plans to equip the two superimposed guns with a third rifled cannon.

In this case, the large caliber departure trigger system includes a stop limiting the trigger stroke to very substantially 2 mm, or approximately, 1/3 of the stroke required for the start of the scratch when the selector is in position. median, thus excluding any simultaneous departure of a large caliber cannon with the rifled shot.

The system for triggering a striped hit includes two safety devices, namely a dog safety device and a double trigger, said system also comprising a special snap-action mechanism to sensitize the start if it is previously armed.

Advantageously, the weapon has a rapid laser beam sighting system.

The invention is set out below in more detail using the appended drawings, in which:

Figure 1 is a front view of the weapon according to the invention, showing the trigger system with the selector.

Figure 2 is a top view of the selector.

Figure 3 is a rear view of the weapon.

Figure 4 is a front view of the weapon in the use position.

Figure 5 is a view corresponding to Figure 4 in the folded position of the barrels.

FIG. 6 is a side view corresponding to FIG. 7.

Figure 7 is a front view of the weapon equipped with a third barrel.

Figure 8 is a view corresponding to Figure 7 in the folded position of the barrels.

Figure 9 is a view showing the trigger and percussion system in the case of a superimposed barrel weapon and equipped with a third barrel.

Figure 10 is a view showing the rear locking of the third barrel.

Figure 11 is a view showing the percussion system of the third gun.

FIG. 12 is a view showing the system for abruptly breaking the trigger.

FIG. 13 is a view showing the security system for starting shots.

The battery is fixed vertically behind the breech plate (O), while the dogs are opposite and have an external handle (1), for an ergonomic armament between the thumb and the index finger.

The trigger (2) is in the inverted position and acts by its vertical back (3) on a pusher (4) held in a part of a selector sliding in the vertical direction.

The external control of the selector (5) is placed on the left and is in the form of a button (6) with ball catch and spring in three positions, namely a high position for the use of the upper barrel, a middle position in safety and a low position for the use of the lower barrel.

The battery and the expansion system are integrated in a fairing composed of two flanges (7) arranged vertically at the rear of the cylinder head plate (O) and integral with the latter which stiffens the assembly.

A handle (8) is fixed to the rear of the flanges (7), in alignment with the assembly, barrels, battery heads.

The tilting axis (9) connects the rear of the lower barrel, with the flanges (7) projecting from the bottom and the top of the breech plate. The lock is articulated on the flanges, the latch of the lock being fixed at the top and at the rear of the upper barrel, control of the lock by pedal on the left side of the battery fairing (10).

The long model (long gun) is fitted with a U-shaped metal profile stock, which is fixed by screws at the top and bottom of a handle (11). A layer plate (12), of molded material of variable thickness, is removably mounted at the end of the handle (11).

The mechanical sighting system varying from one model to another, the handgun being rather intended for live shooting, is provided with a fixed device, notch cut in the bolt and its tenon and protected handlebar mounted on a ramp at the end of the upper barrel (15 and 16).

The long gun intended for curved shooting, has a wide angle rise folded down on the cheekpiece. A cursor eyelet (14) lengthens the line of sight in relation to the raised and foldable handlebars at the end of the upper barrel (13).

The locking of the third barrel (17) on the breech plate is ensured over a semi-circular reach of 170 ° by a latch with the same arc (18) kept open by a ball pawl (19) and closed by a latch (20) .

A laser (21) fixed on the support sleeve (22) of the gun, allows a fast and precise aiming by placing the light point on the target. A contact under rubber protection is fixed under the lower barrel at the location of the grip, the pressure of this establishing contact with the light system.

The percussion for firing the rifled blow is ensured by an axial dog system (23) fixed against the right flange. Manual arming takes place by means of the pull tab (24) held by the trigger (25) acting on the dog tenon (26). A second safety trigger (27), with a longer development, acts on the front dog post (28).

The two triggers (25 and 27) are controlled by a second expansion back mounted horizontally by fitting at the end of the expansion axis (29). The lever arm thus formed releases the position of the trigger (27) at 2/3 of the pressure on the trigger, the last 1/3 preparing for departure by detaching the trigger (25).

The start, when the trigger (25) comes off, can be sensitized by first arming a snap system (30) pressurized at the end of the trigger lever (29). The ramp of the breaker (31) passing by force under the lever (29), performs this function without the finger of the shooter.

The safety device (32), in the low position interposes a metal plate between the breech plate and the dog's head, which prevents striking of the striker (33) mounted on a pin spring (34).

The percussion devices, controlled by a single trigger, are designed in such a way that the start of two simultaneous shots is made impossible, even if the three dogs are armed and without safety.

Figures 12 and 13 illustrate the case of the three armed dogs, safety (32) of the striped strike not lowered. The selector is positioned on one of the large caliber smooth strokes (L2), pusher (4-P2) in front of the trigger (36-G2).

In this case, a pressure on the trigger (D) equal to 2 mm of travel which is transmitted by the lever (3) to the pusher (4-P2) generates an advance of the latter equal to 1 mm passed on to the trigger (36 -G2), sufficient stroke to start the smooth stroke of large calbire (L2). The trigger stop (35) limits the travel of the parts used as defined in this case (firing of one of the large caliber smooth shots).

The start of the rifled shot requires a defined stroke equal to 6 mm on the trigger, this stroke is only obtained in the only case where the selector is in the middle position, pusher (4) in free passage between the triggers (G1 and G2 ) position normally defined when you want to trigger the shot from the strike by canceling the possibility of starting heavy shots.

The advantages are apparent from the description.

Claims (6)

1. Large-calibre firearm comprising at least one barrel having a grip (11) serving as a stock having, on its upper part, a single inverted trigger (2), said grip being in alignment with the barrel or barrels, characterised in that in the case of double over-and-under barrels, grip (11) is coaxially aligned with the barrels without extending above the overall dimension of said barrels, it being possible to fold the barrels through an angle of 180° so that they are positioned alongside and substantially parallel to the grip (11) serving as a stock.
2. Firearm as claimed in claim 1, characterised in that the single inverted trigger (2) is controlled by two levers mounted at right angles that actuate either one or the other of the corresponding sears depending on the position of a selector (5).
3. Firearm as claimed in claim 1, characterised in that it has, between the two superimposed barrels, a third rifled barrel (17).
4. Firearm as claimed in any of claims 1 and 3, characterised in that the large-calibre trigger and firing system comprises a limit stop (35) that limits the travel of the trigger to essentially 2 mm, i.e. approximately 1/3 of the travel necessary to fire the rifled round when selector (5) is in the middle position, thus preventing any simultaneous firing of a large-calibre barrel and the rifled round.
5. Firearm as claimed in claim 4, characterised in that the trigger system for the rifled round comprises two safety mechanisms, namely a hammer safety mechanism and a double sear, said system also comprising a special snap-action mechanism in order to make release more sensitive if it has previously been activated.
6. Firearm as claimed in claim 1, characterised in that it has a fast laser-beam sighting system (8).

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