EP1447638A1 - Double-barrel breakdown gun and process - Google Patents

Abstract

A curved abutment interface, formed between a barrel section (32) and a receiver section (34), includes a convex portion that exerts a bearing force against a concave portion. A pressure adjuster, coupled to either the barrel or receiver, adjusts the bearing force. Independent claims are also included for the following: (a) a firearm apparatus; and (b) a firearm discharging method.

Description

TECHNICAL AREA

The present invention relates to firearms, and more particularly rifles with two superimposed smooth barrels.

FOUNDATION OF THE INVENTION

Firearms part of the variety of rifles come in a lot of different shapes and types for several decades. Different types of rifles have been developed for different types of shots. Through example, and without any limitation, there are rifles with smooth single-hinged barrels, two-barreled rifles rifles placed side by side, rifles with two smooth barrels superimposed, repeating single-barreled shotguns controlled, semi-automatic shotguns, as well than various other types of shotguns. The shotgun technology continues to evolve to respond to the different needs manifested by the followers of the shoot. A large number of factors are taken into account in the design of shotguns, such as appearance, weight, touch, ease of use, use final as well as the individual preferences expressed by the shooters.

Rifles with two superimposed smooth barrels in particular are extremely popular with shooting enthusiasts. Rifles at two superimposed smooth barrels are particularly suitable for pigeon shooting. The present invention relates to improvements to rifles with two smooth barrels Bunk.

The overall weight of a rifle with two superimposed smooth barrels represents a major problem for all models and all types of shotguns of this type. Lighter will the rifle with smooth barrel, easier will be its handling. When, during a shooting competition, priority is given to speed of handling and aiming, as is the case in pigeon shooting, the weight is particularly important.

Another major design issue is the feel the gun with two smooth superimposed barrels. So specific, the smoother the rifle, the easier it will be manipulation and control. Factors such as height overall, the width and the outline of the rifle with smooth barrels contribute to its characteristics of smoothness and "touch".

Yet another important factor in the context of rifles with two superimposed barrels concerns the overall aspect of the weapon fire. In general, a thinner and smoother rifle will provide better appearance. Smooth models like this make that the rifle is easy to master and handle. of the larger models are more cumbersome and more massive, and therefore more difficult to handle and to master.

Rifles with two traditional superimposed smooth barrels specifically involve a joint of the type to solid spindle or pin. By this we mean that the hinge mechanism that allows the section making barrel / carcass office to swivel away from the portion of the firearm serving as a wafer, revolves around a specific defined pivot point of typically by a full spindle joint or by a trunnion. A solid pin type model requires a significant amount of material surrounding the spindle or trunnion and therefore a higher dimension in terms overall height of the rifle, which goes against the looking for a smoother, low profile rifle model.

Another particular challenge to take up in the context of rifles with two superimposed guns concerns the surfaces which support the charge of the recoil force when discharging the rifle. Of typical way, traditional rifles with two smooth barrels overlays require at least two separate surfaces of load support to absorb the recoil shock of the rifle. The tolerances of multiple load bearing surfaces of this type have to be extremely precise even to start approach a balanced load distribution of the recoil force on these multiple support surfaces of charge. When the tolerances are not precise, a common problem with double-barreled rifles smooth superimposed guns is that one of the load bearing surfaces absorbs most or essentially the entire recoil force. During the time, we get a loosening of the functional parts or mobile guns or a loosening of these last when they are put into service.

A major reason which militates for the need to have two load bearing surfaces relate to the surface area. When there is only a limited amount of surface in relation to a particular joint (i.e. a full spindle joint or a joint of the journal type), a quantity of surface area additional is usually required to absorb the shock generated by the recoil of the firearm during the discharge of the latter. Consequently, given that the area of surface surrounding the joint portion itself cannot be increased, a second surface supporting the load must be intended to absorb a portion of the shock of the force of decline. Tolerances of load bearing surfaces must be taken into account in case one needs to two load support surfaces.

Yet another problem associated with traditional two-rifles superimposed guns concerns the need to provide a notch in the lower surface of the portion of a rifle with two superimposed guns, occupied by the carcass, to take in has a complete articulation of the section serving barrel with respect to the section serving as a carcass. This type of full joint is required to allow the gun to eject used cartridges and to allow to load new pellet cartridges in the rooms. Consequently, there is a need to have a model of rifle with two superimposed barrels in which the need to practice a notch whose portion of the barrel of the gun.

SUMMARY AND OBJECTS OF THE INVENTION

In view of the above, a main object of this invention is to provide a two-barrel rifle apparatus superimposed which is light, easy to handle and which has a smooth appearance.

Another object of the invention is to provide an apparatus for rifle with two superimposed barrels which has a low profile.

Another object of the present invention is to provide a rifle apparatus with two superimposed barrels which has a new joint to articulate a portion of the device of rifle compared to another portion.

Yet another object of the present invention is to provide a rifle apparatus with two superimposed barrels which includes a substantial abutment surface to absorb the shock associated with the recoil force resulting from the discharge of the rifle.

Another object of the present invention is to provide a rifle apparatus with two superimposed barrels which presents a easy handling and control.

Another object of the present invention is to provide a rifle apparatus with two superimposed barrels which includes a substantial abutment surface defined at least in part by a curved edge of the portion serving as a carcass and by a corresponding curved edge of the monobloc unit of the section acting as a cannon.

Yet another object of the invention is to provide a rifle apparatus with two superimposed barrels which has a smoother and thinner appearance.

Yet another object of the invention is to provide a rifle apparatus with two superimposed barrels which includes a stop surface between the portion of the rifle serving as carcass and the portion of the rifle serving as a barrel, the abutment surface defining a pivot axis spaced from the abutment surface, around which the portion is articulated acting as a barrel relative to the portion of the rifle acting as a carcass.

Another object of the invention is to provide an apparatus for rifle with two superimposed barrels which encompasses an area of stop which also acts as a hinge surface, the abutment surface providing a substantial surface area to absorb the recoil shock of the rifle when discharging the gun.

Another object of the invention is to provide an apparatus for rifle with two superimposed barrels according to the present invention which provides sufficient abutment surface to absorb the charge of recoil when discharging the rifle. The surface of stop also provides track articulation surface domed to eliminate the need for any spindle or trunnion joint.

Yet another object of the present invention is to provide a rifle apparatus with two superimposed barrels which provides a unique articulation mechanism to articulate the portion acting as a cannon relative to the portion making carcass office, so that we eliminate the need to provide a notch on the bottom surface of the portion of the firearm serving as a carcass.

Another object of the present invention is to provide a rifle apparatus with two superimposed barrels which uses a joint assembly which extracts the elastic force from rear-facing compression of an assembly of trigger, which reverses such force and redirect force towards the front portion of the gun in the purpose of operating the ignition pin.

Another object of the invention is to provide an apparatus for rifle with two superimposed barrels which implies a pin ignition which is charged by moving a coil spring towards the front portion of the rifle.

Another object of the invention is to provide security so that when you don't press trigger and when the striker tries to move towards the rear end of the gun, the striker is stuck by trigger and will not result in a discharge.

Another object of the present invention is to provide a rifle apparatus with two superimposed barrels which retains a waterproof structure for an extended period of time life of the rifle.

The objects indicated above are made using a rifle apparatus with two superimposed barrels according to the invention. New Smooth-Shot Rifle Device Includes Surface of a curved track stop comprising a first surface of contact arranged on the section of the firearm corresponding to the carcass and a second setting surface contact arranged on the monoblock unit of the weapon section fire corresponding to the cannon. The contacting surfaces are curved in the form of a curved track so that they reciprocally come into sliding contact during of the articulation of the section corresponding to the barrel by relation to the section of the smooth-barreled shotgun apparatus corresponding to the carcass. The contacting surfaces provide sufficient surface area for absorb the shock of the recoil force when discharging the gun. No abutment or contact surface additional, outside the track stop surface curved, is only necessary to promote the absorption of recoil force when discharging the shotgun. Of more, the contacting surfaces are defined, from uniquely, by a female or concave portion formed on the one-piece unit of the barrel shotgun portion smooth corresponding to the barrel and by a male portion or convex formed on the portion of the barrel shotgun apparatus smooth corresponding to the carcass. The structure of this type articulation provides an overall profile of the device of small-bore smooth-barreled shotgun since the pivot axis defined by the contacting surfaces are spaced from the contacting surfaces. Any specific joint and no journal is required at the specific pivot axis, unlike what is the most traditional shotguns, if although we can reduce the height dimension of the rifle to smooth barrel.

The unique curved track stop surface also makes sort of pull the barrel away from the carcass when we opens the cylinder head, eliminating the need to provide a cut in the portion corresponding to the carcass, which is generally required in most types of model rifle with two smooth superimposed barrels.

Another aspect of the present invention involves a unique reverse direction trigger assembly. The spring main helical trigger is cocked by compressing the spring toward the end of the gun corresponding to the mouth. When the trigger is pulled, the spring of the trigger relaxes and exerts an oriented force backward on the hinge assembly which at its turn, redirect the force towards an ignition pin in the direction oriented towards the anterior portion or towards the end of the rifle with a smooth barrel corresponding to the muzzle. With this unique trigger assembly, you can get a unique security mechanism (which will be described below).

Other objects, characteristics and advantages of the invention will emerge from the detailed description of the invention below with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

la figure 1 est une vue en perspective d'un fusil à deux canons lisses superposés selon la présente invention ;

la figure 2 est une vue latérale partielle en élévation, dans laquelle on représente une portion d'un fusil à deux canons lisses superposés de la figure 1, la culasse étant en position fermée ;

la figure 3 est une vue latérale partielle en élévation, dans laquelle on représente une portion du fusil à deux canons lisses superposés de la figure 1, la culasse du fusil étant en position ouverte ;

la figure 4 est une vue partielle en perspective d'une portion du fusil à deux canons lisses superposés de la figure 1, la culasse étant en position fermée ;

la figure 5 est une vue partielle en perspective d'une portion du fusil à deux canons lisses superposés de la figure 1, la culasse du fusil étant dans une position partiellement ouverte ;

la figure 6 est une vue partielle en perspective d'une portion du fusil à deux canons lisses superposés de la figure 1, la culasse du fusil étant dans une position complètement ouverte ;

la figure 7 est une vue partielle en perspective d'une portion de la carcasse, dans laquelle on représente des détails internes d'un côté de la piste bombée ;

la figure 8 est une vue partielle en perspective d'une portion de l'unité monobloc et de la portion d'une carcasse du fusil à deux canons lisses superposés de la figure 1, l'unité monobloc et la carcasse étant séparées l'une de l'autre ;

la figure 9 est une vue latérale en élévation d'un système d'injection selon la présente invention, dans laquelle on représente les pièces de l'éjecteur après la décharge de l'arme à feu ;

la figure 10 est une vue en perspective du système d'éjection de la figure 9 ;

la figure 11 est une vue de sommet du système d'éjection de la figure 9 ;

la figure 12 est une vue latérale en élévation d'un système d'éjection du fusil à deux canons lisses superposés de la figure 1, dans laquelle on représente les pièces de l'éjecteur avant la décharge de l'arme à feu ;

la figure 13 est une vue en perspective du système d'éjection de la figure 12 ;

la figure 14 est une vue de sommet du système d'éjection de la figure 12 ;

la figure 15 est une vue de sommet du système de verrouillage d'un fusil à deux canons lisses superposés de la figure 1, dans laquelle on représente les pièces du système de verrouillage lorsque l'arme à feu et dans une position déverrouillée ;

la figure 16 est une vue en perspective du système de verrouillage de la figure 15 ;

la figure 17 est une vue latérale en élévation du système de verrouillage de la figure 15 ;

la figure 18 est une vue inférieure en perspective du système de verrouillage de la figure 15 ;

la figure 19 est une vue de sommet d'un système de verrouillage du fusil à deux canons lisses superposés de la figure 1, dans laquelle on représente un système de verrouillage dans une position verrouillée ;

la figure 20 est une vue de sommet en perspective du système de verrouillage de la figure 19 ;

la figure 21 est une vue latérale en élévation du système de verrouillage de la figure 19 ;

la figure 22 est une vue inférieure en perspective du système de verrouillage représenté en figure 19 ;

la figure 23 est une vue latérale en élévation d'un assemblage de détente du fusil à deux canons lisses superposés de la figure 1, dans laquelle on représente l'assemblage de détente avant d'avoir appuyé sur la détente ;

la figure 25 est une vue en perspective de l'assemblage de détente de la figure 23 ;

la figure 24 est une vue de sommet de l'assemblage de détente de la figure 23 ;

la figure 26 est une vue latérale en élévation d'un assemblage de détente du fusil à deux canons lisses superposés de la figure 1, dans laquelle on représente la détente sur laquelle on appuyait, mais avant que l'unité de percuteur n'ait entamé son déplacement ;

la figure 29 est une vue latérale en élévation d'un assemblage de détente du fusil à deux canons lisses superposés de la figure 1, dans laquelle on représente l'assemblage de détente sur lequel on a appuyé ;

la figure 30 est une vue en perspective de l'assemblage de détente de la figure 29 ;

la figure 31 est une vue de sommet de l'assemblage de détente de la figure 29 ;

la figure 32 est une vue partielle latérale en coupe et en élévation du fût lorsque le fût se trouve en interface avec la section faisant office de canon et la section faisant office de carcasse ;

la figure 33 est une vue en perspective d'un assemblage d'interrupteur de sécurité selon la présente invention ;

la figure 34 est une vue en perspective éclatée de l'assemblage d'interrupteur de sécurité de la figure 33 ;

la figure 35 est une vue latérale en élévation de l'assemblage d'interrupteur de sécurité de la figure 33 ;

les figures 36 à 39 sont des vues en perspective dans lesquelles on représente le fonctionnement de l'assemblage d'interrupteur de sécurité de la figure 33 ;

la figure 40 est une vue en perspective d'une forme de réalisation donnée en variante d'un assemblage d'interrupteur de sécurité selon la présente invention ; et

la figure 41 est une vue latérale en élévation de l'assemblage d'interrupteur de sécurité, représenté en partie par des lignes en pointillé, incorporé dans l'arme à feu selon la présente invention.

Below, preferred embodiments of the invention are described with reference to the accompanying drawings in which:

Figure 1 is a perspective view of a rifle with two superimposed smooth barrels according to the present invention;

Figure 2 is a partial side view in elevation, in which there is shown a portion of a rifle with two superimposed smooth barrels of Figure 1, the breech being in the closed position;

Figure 3 is a partial side view in elevation, in which there is shown a portion of the rifle with two superimposed smooth barrels of Figure 1, the breech of the rifle being in the open position;

Figure 4 is a partial perspective view of a portion of the rifle with two superimposed smooth barrels of Figure 1, the breech being in the closed position;

Figure 5 is a partial perspective view of a portion of the rifle with two superimposed smooth barrels of Figure 1, the breech of the rifle being in a partially open position;

Figure 6 is a partial perspective view of a portion of the rifle with two superimposed smooth barrels of Figure 1, the breech of the rifle being in a fully open position;

Figure 7 is a partial perspective view of a portion of the carcass, in which internal details are shown on one side of the curved track;

FIG. 8 is a partial perspective view of a portion of the monobloc unit and of the portion of a carcass of the rifle with two superimposed smooth barrels of FIG. 1, the monobloc unit and the carcass being separated one the other ;

Figure 9 is a side elevational view of an injection system according to the present invention, in which the parts of the ejector are shown after the discharge of the firearm;

Figure 10 is a perspective view of the ejection system of Figure 9;

Figure 11 is a top view of the ejection system of Figure 9;

Figure 12 is a side elevational view of an ejection system of the rifle with two superimposed smooth barrels of Figure 1, in which the parts of the ejector are shown before the discharge of the firearm;

Figure 13 is a perspective view of the ejection system of Figure 12;

Figure 14 is a top view of the ejection system of Figure 12;

Figure 15 is a top view of the locking system of a rifle with two superimposed smooth barrels of Figure 1, in which the parts of the locking system are shown when the firearm and in an unlocked position;

Figure 16 is a perspective view of the locking system of Figure 15;

Figure 17 is a side elevational view of the locking system of Figure 15;

Figure 18 is a bottom perspective view of the locking system of Figure 15;

Figure 19 is a top view of a locking system of the rifle with two superimposed smooth barrels of Figure 1, in which there is shown a locking system in a locked position;

Figure 20 is a perspective top view of the locking system of Figure 19;

Figure 21 is a side elevational view of the locking system of Figure 19;

Figure 22 is a bottom perspective view of the locking system shown in Figure 19;

FIG. 23 is a side elevation view of a trigger assembly of the rifle with two superimposed smooth barrels of FIG. 1, in which the trigger assembly is shown before having pressed the trigger;

Figure 25 is a perspective view of the trigger assembly of Figure 23;

Figure 24 is a top view of the trigger assembly of Figure 23;

Figure 26 is a side elevational view of a trigger assembly of the rifle with two superimposed smooth barrels of Figure 1, in which the trigger is depicted on which it was pressed, but before the striker unit has started its displacement;

Figure 29 is a side elevational view of a trigger assembly of the rifle with two superimposed smooth barrels of Figure 1, in which there is shown the trigger assembly which has been pressed;

Figure 30 is a perspective view of the trigger assembly of Figure 29;

Figure 31 is a top view of the trigger assembly of Figure 29;

FIG. 32 is a partial side view in section and in elevation of the barrel when the barrel is in interface with the section acting as a barrel and the section acting as a carcass;

Figure 33 is a perspective view of a safety switch assembly according to the present invention;

Figure 34 is an exploded perspective view of the safety switch assembly of Figure 33;

Figure 35 is a side elevational view of the safety switch assembly of Figure 33;

Figures 36 to 39 are perspective views in which the operation of the safety switch assembly of Figure 33 is shown;

Figure 40 is a perspective view of an alternative embodiment of a safety switch assembly according to the present invention; and

Figure 41 is a side elevational view of the safety switch assembly, shown in part by dotted lines, incorporated into the firearm according to the present invention.

DETAILED DESCRIPTION OF THE INVENTION

As shown in Figure 1, the present invention relates a shotgun apparatus 30 generally comprising a section 32 corresponding to the barrel arranged at the end front or distal of the gun and a section 34 corresponding to the carcass / plate, arranged at the end rear or proximal of the shotgun apparatus. The section 32 corresponding to the barrel includes a monobloc unit 60 to which are fixed an upper barrel 62 and a barrel lower 64. A pair of ejection systems 56, 58 is also housed in section 32 corresponding to the barrel.

The carcass section 34 contains the trigger assembly 38, the locking system 100, the internal connections for armament, security assembly 120 as well as various other operating parts of the barrel rifle apparatus smooth 30. The plate of the smooth-barreled shotgun is attached to the rear portion of the carcass.

The smooth-barreled gun apparatus 30 according to the present invention includes, in one embodiment, a shotgun two smooth guns superimposed. An assembly of cannons 32 includes a first barrel or upper barrel 62 (see the Figure 3) arranged in alignment with a second barrel or lower barrel 64, while being mounted directly on this latest. The rifle with two superimposed smooth barrels 30 includes further an end 36 occupied by the butt, which can include a recoil pad, and one end 37 occupied by the mouth. The firearm 30 further comprises an assembly of trigger 38 for discharging the gun and a system of lock 40 actuated by lever to open the cylinder head the shotgun apparatus. The corresponding portion 32 at the barrel ends at the end of the smooth-barreled rifle, occupied by the mouth.

In Figures 7 and 8, an assembly is shown articulation 42 which is defined in part by a portion male articulation 46 (see FIG. 7) formed on the section 34 corresponding to the carcass and by a portion female articulation 48 (see FIG. 8) formed on the monobloc unit 60 of section 32 corresponding to the barrel of the notably smooth rifle apparatus. On the portion of male articulation 46, a curved stop zone is defined 44 (i.e. a curved track). Stop zone 44 further includes a convex abutment surface 45 which provides a main bearing surface for contacting by sliding with corresponding concave abutment surface 47 (see Figure 8) formed inside the portion female articulation 48 on the monobloc unit 60. Although we only represent one in Figures 1 to 6, the invention comprises a pair of stop zones 44 and abutment surfaces 45, 47 formed on either side of the weapon fire 30. The abutment zones 44 and the abutment surfaces 45, 47 act as both a hinge and a bearing surface for the articulation of section 32 corresponding to the barrel relative to section 34 occupied by the carcass / plate and to absorb the recoil force of the firearm when dump. The articulation assembly 42 defines an axis of pivot 50 (see Figure 3) which is distant or spaced from stop zones 44. An articulation proper does not exist not to the pivot axis 50. The first abutment surface curve 45 and the second stop surface curve 47 (see figure 8) lean against each other to form the joint. The first and second abutment surfaces 45, 47 come into reciprocal contact by sliding along the curved track in a variable overlap relationship (in depending on the degree of articulation of the portion 32 corresponding to the barrel relative to the portion 34 corresponding to the carcass / plate).

The main benefit of the present invention relates to the amount of surface area provided by abutment surfaces 45 and 47 of the curved track 44. When the breech of the smooth-barreled shotgun apparatus is closed, the surface areas of abutment surfaces 45 and 47 come into reciprocal contact along essentially the entire the curved track 44 (see FIG. 7). We thus obtain a substantial surface area which is sufficient, nothing more, to adequately absorb the recoil force when discharge from the smooth alkanol rifle. Unlike the present invention most of the other traditional two shotguns stacked guns require two separate stop surfaces to provide sufficient abutment surface area for absorb the shock associated with the recoil force of the shotgun smooth during discharge. In one embodiment, the abutment surface 45 of the curved track 44 has approximately 1/8 "wide and one length approx. 2-5 / 16 ''. However, it will be understood that these dimensions can vary without departing from the frame and the spirit of the present invention. As shown in Figures 7 and 8, the convex portion 46 and the concave portion 48 come into contact with each other along their lengths and their respective widths and, over the substantial portion of their length, along the abutment surfaces 45 and 47. In Consequently, the total surface area of the curved runway 44 is important in relation to the surface area of a fixed joint or a traditional journal provided on a rifle device with two superimposed barrels. Given the substantial abutment surface provided by the curved track 44 of the present invention, the abutment area or the curved track 44 is able to absorb all of the recoil force generated during the discharge of the firearm. We do not need a second stop area or a stop area extra, as is the case with rifles traditional with two superimposed cannons. Furthermore, given that two separate stop surfaces are unnecessary, there is no no need to coordinate tolerances against different and separate contact surfaces in space. Traditionally, the tolerances of two or more stop surfaces must be precisely adjusted so that a stop surface does not support a higher load than that supported by the other surface stop. Furthermore, after having discharged at repeatedly, the moving parts and the mechanism Smooth-bore shotgun lever will come loose. The current invention requires no coordination of tolerances critical of this type given the abutment surface unique substantial provided by each curved track 44.

Another important advantage related to the curved track or the area of stop 44 is that the curved track itself provides hinge or bearing surfaces against which the two portions of the shotgun come from arrange for articulation purposes. Contrary to rifles with two superimposed barrels of the prior art, when a pivot pin, socket or pin specific to the precise pivot point, the point pivot 50 (see Figure 31) defined by the track convex or by the stop area 44 is spaced from the surfaces of articulation proper (i.e. the surfaces of stop 45, 47). As a result, the actual positioning of the point pivot point 50 must not be located in a the shotgun apparatus corresponding to a quantity substantial structure. In fact, the pivot point defined 50 can correspond to a place where no structure does not exist (i.e. below the most base of the firearm) based on the actual radius of the area stop 44, without departing from the scope of the present invention. No pin itself and no other device hinge is only required at pivot point 50. From this way we can get a smooth barrel shotgun which has a lower profile. If a pin or socket specific was required to come and dispose to the point of pivot 50, we would need a substantial structure on the smooth-barreled rifle surrounding the pivot point what which in turn would require a global dimension in height most important of the rifle with smooth barrel. Consequently, the new curved track of the present invention gives rise to a smoother, lighter and easier to manipulate.

In Figures 3 and 6, assemblies are shown ejection 56, 58 operatively mounted on the unit monobloc 60 of section 32 of the present invention corresponding to the barrel. As shown in Figure 3, the unit monobloc 60 provides the first part of cannons 62, 64 and acts as an interface with section 34 corresponding to the carcass / wafer. The purpose of the monoblock unit 60 is further rigidly connect the upper barrel 62 and the barrel lower 64 of the 30 barrel two-barrel machine Bunk. During the articulation of the barrel section 32 relative to the carcass / insert section 34, the ejection assemblies 56, 58 trigger the movement of the ejection heads 66, 68 (which come into contact with the side bottom of the flanged portion of the pellet cartridge) towards the exterior with respect to the base end 70 (see the Figure 6) of the monobloc unit 60. Ejection heads 66, 68 are intended to be pushed outwards with a sufficient force to unload the unit in its all one pellet cartridge consumed. If we didn't get not, for whatever reason, a discharge from the plumb cartridge, ejection heads 66, 68 would push the pellet cartridges away from the base end 70 of the monoblock unit sufficiently (over approximately 10 mm) to allow the shooter to easily remove the chamber lead cartridges.

In Figures 9 to 14, the details of the ejection assembly in the absence of the carcass or guns. Figures 9 to 11 show the components ejection system 56 after firing with the gun. In figures 12 to 14, the elements are represented ejection of the ejection system 56 before having fired with the gun. We represent a single ejection system 56. The system ejection 58 is identical in terms of operation and structure to the ejection system 56. Consequently, one will only address the ejection system 56.

The ejection system 56 includes an ejection spring 76 which gives outward prestressing to other ejection elements. A guide 72 of the ejection spring holds the spring in place. The combination of spring 76 and of the spring guide 72 is inserted into openings of appropriate dimensions practiced in the barrels and is held in place by suitable stops trained to inside the barrel assembly. An ejection striker 77 is coupled to the ejection assembly. A cam link 79 is part of the ejection assembly and is guided by the carcass of the firearm. The striker 77 hammer office and strikes the head of the cam joint 79 when the cartridges are ejected. The cam joint 79 further includes a shoulder 80 which bears against the unit monobloc 60 in order to limit the movement of the ejection assembly 56.

The ejection head 66 is fixed to the cam joint 79 and is used to force the cartridge out of the chamber. A ejection head pin 67 holds the ejection head 66 at the state coupled to the cam joint 79.

An ejector trigger 82 is used to retain the spring and the striker after firing. An articulation of ejection trigger 82 is used for decoupling the ejection trigger after opening the rifle. A screw of sync setting 86 is used to set the synchronization of the ejection between the two guns.

When the gun is in the open position, cartridges are loaded into the end of the barrels occupied by the cylinder head. When the rifle is closed, a cam section 88 of the cam joint 79 is guided by the tracks in the carcass and forces the ejection elements (i.e. the ejection head 68, cam joint 79 and striker ejection 77) back into the barrels. The spring ejection 76 exercises a prestressing condition constant on the ejection elements towards the end of the firearm, occupied by the breech. when reopens the firearm while the cartridge has not been pulled, the ejection spring 76 pushes the cartridge in the outside of the barrels to a stroke limit of approximately 10 mm.

After discharging the firearm, a cocking lever 90 rotate forward (see Figure 9) and between in contact with the ejector trigger 82, causing that the trigger 82 turns clockwise shows so that it can come into contact with the notch 83 of the ejector striker 77. When the firearm is open or placed in the breech position after firing, the ejection trigger 82 comes into contact with notch 83 on the striker 77 for the purpose of holding the striker ejector 77 in position. When the breech of the gun is open, the cam portion 88 of the cam joint 79 is guided by the tracks in the carcass. When the ejector striker 77 is gripped by the ejector trigger 82, the spring 76 is not able to exercise a subsequent prestress on the ejector to the outside. However, the tracks in the carcass force said spring to move outward for an approximate distance of 3 mm. This displacement is used to eject the cartridge consumed. When the end of the two cannons move away from the carcass to leave a passage free to eject the consumed cartridge, the end of the ejector trigger joint 84 comes into contact with the quick-release cocking lever 90. This setting contact forces the ejector trigger 82 to move away from the striker 77. The stored energy of spring 76 is released by hitting the end of the cam joint 79, giving rise to a rapid displacement of the latter outwards. Thus, the consumed cartridge is expelled from the room. In one embodiment, the ejection of each cannon takes place simultaneously. To achieve this type of ejection, place an adjustment screw timing 86 (see Figure 10) in the trigger ejection 82. The adjustment screw 86 rests on 84 ejector trigger joint and affects the moment decoupling of said articulation.

The locking system 100 is shown in the figures 15-22. The locking system 100 is shown in the unlocked position in Figures 15 to 18 and it is shown in the locked position in Figures 19 to 22.

We use the upper lever disconnection device 102 to release the upper lever 104 when the rifle is closed. A spring loaded plunger (not shown) is held inside the upper lever 104. In the goal to unlock the rifle, we rotate the lever upper 104 counterclockwise shows (as shown in figure 15) up to approximately 30 degrees. In this position, the plunger in the upper lever is arranged in alignment with the opening in the carcass containing the disconnection device 102 of the upper lever. During the opening of the lever mechanism, the disconnection 102 of the upper lever is pushed forward by the plunger in the upper lever 104. When the plunger is arranged so that it protrusion in the carcass, the rotation of the upper lever is blocked. When closing the lever mechanism, the end of the barrels pushes the distal end of the disconnection device 102 of the upper lever back into the carcass, thereby pushing the plunger back into the upper lever, which releases the movement of this last. In this way, the system is prevented from firing when the rifle is not locked. The disconnection of trigger and rocker joint only takes place when the upper screw has rotated as shown in figure 15.

The upper lever 104 is also used as an arm crank or as a lever for moving the bolts lock 106 to insert them into the slots or grooves 120 in the monobloc unit 60 or in order to remove. The disconnector 108 of the rocker interfaces with the upper lever 104. When doing turn the upper lever 104, the disconnection device 108 of the rocker is pushed back or is returned by cam back by the upper lever 104 in the rocker 140 (see Figures 23-31). When rocker 140 performs backward rotation of the gun, pins 135 have the possibility of withdrawing by deviating bait or primers consumed after the shot (s). Of this way, we also block the ignition pins when the trigger fails while the rifle is in an unlocked position. A spring (not shown) pushes the disconnection device 108 from the rocker back to its locked position.

A device 110 for disconnecting the trigger joint is coupled by screw thread to a transverse element 112 (see Figure 22) which extends between locking bolts 106. The device for disconnecting the articulation of trigger 110 includes a rear end surface 111 which contacts the trigger joint to squeeze rear trigger joint.

A locking cam 114 is fixed to the upper lever 104 via a fixing device (not shown) such as a screw or a brooch, as will be understood by those skilled in the art specialized in technique. A cylindrical body 116 extending down from lever 104 is coupled to the locking cam 114. A groove 118 is formed in the cylinder 116, in which one end of the device for disconnecting the rocker 108. When doing turn lever 104, locking cam 114 turns, if although the extension member 116 prints to the bolts of lock 106 (which are coupled to each other by the transverse element 112) (see FIG. 18) a movement alternative to the monobloc unit.

Locking bolts 106 are inserted into slots 120 formed in the monobloc unit 60. Bolts of lock 106 prevents the lever mechanism from opening after closing the breech of the firearm. Bolts locking 106 include an external surface 107 angular or conical which facilitates the contacting of locking bolts 106 with slots 120 sized suitably in the one-piece unit. When the point contacting edge 107 is subject to wear, the locking bolts 106 are loaded by a spring for maintain a tight fit.

As mentioned, the cross member 112 maintains together the locking bolts 106 and forces these to move in the form of a unit. The bolts of locking 106 and the transverse element 112 can be machined or otherwise made to obtain unit. Alternatively, the combination of locking bolts 106 and the cross member 112 can be manufactured by assembly of separate parts. A pair of screws 113 (only one being shown) holds the bolts together lock 106 and the transverse element 112.

Monoblock 60 is designed to provide an interface with the carcass (i.e. carcass 34 as indicated in Figure 3) and with the locking system 100, on the one hand and with the barrel tubes 62, 64 (see Figure 3), on the other go.

In FIGS. 23 to 31, the firing system 130 is shown. In Figures 23 to 25, the firing system 130 is shown before pressing the trigger. In Figures 26 to 28, we represents the firing system 130 once you have pressed on the trigger, but just before the rocker starts movement. Figures 29 to 31 show the system firing 130 after pressing the trigger.

The firing system 130 generally comprises an arming lever 90, a link joint 132, a spindle assembly 134, a trigger joint 136, a striker 138, a rocker 140, a trigger 142, an articulation of trigger 144 and a mass of inertia 146. The assembly, operation and construction of these subparts of the 130 firing system are discussed below.

The cocking lever 90 is used to cock the firearm once a shot has been taken. A pocket is cut in the carcass so that the cocking lever 90 is housed there. When the firearm is unloaded, the cocking lever rotates around pivot point 145, causing the front portion of the cocking lever 90 to drop (giving rise to the rearward movement of the striker 138). When the gun is opened, the front of the cocking lever 90 is pushed up through the barrel, causing it to rotation around the curved portion. During this rotation, the cocking lever 90 pulls the striker 138 in the direction of the front of the gun. When the firearm is close to a fully open position, trigger joint 136 falls into a trigger position over the striker 138.

The springs in the preloaded state of the spindle 135 press the end of the ignition pin 135 so that the latter comes into contact with the portion upper of the rocker 140 in a position which grasps the trigger joint and holds it in place until next shot.

The connection joint 132 couples the cocking lever 90 to striker 138. The articulation 132 is fixed to the lever arm at pivot point 147. A spring 139 (not shown in Figures 23 to 31) presses striker 138 towards the rear of the rifle. After overcoming the state of prestressing when cocking the rifle, the trigger joint 136 is hooked from above striker 138 and holds it in position until what we pull the trigger 140. The articulation of connection 132 moves approximately in a straight line (even if the connection of the connection joint 132 to the cocking lever 90 gives rise to a slight vertical movement cocking lever, such movement is not enough to trigger any type of problem).

Ignition pin assembly 134 includes a pin 135 and the spring 137 of the ignition pin. The ignition pin spring puts rocker 40 in a state of preload in a firing position. This movement allows to cock the rifle. Each ignition pin 135 limits the movement of all the elements associated with this pin, including including rocker 140 and striker 138. The movement of the ignition pin 135 is limited by a pin (not shown) which fits into a notch 141. The extreme end of the ignition pin 135 (not shown) is narrowed and comes into contact with the primer the cartridge being fired, as will be understood skilled in the art.

The trigger joint 136 is used to reduce the charge transfer to the trigger surfaces. The striker 138, when in position fully armed, develops horizontal load substantial. The area between the joint of trigger 136 and striker 138 forms an angle so that the intense horizontal force coming from the striker generates a small vertical force which applies a rotational force upward on the trigger joint to release the striker 138. The rocker 140 limits the upward rotation of the trigger joint 136. The striker 138 is held against connection joint 132 by a nut striker 143. When the rifle is used to fire, the trigger turns the rocker 140 which in turn releases the trigger joint 136. The reduction of forces caused by the trigger joint 136 provides a lighter and more uniform movement of the trigger.

After the striker 138 is released, a setting force state of prestressing by spring, conferred by the spring helical 139 (the striker spring 139 is shown in Figures 2 to 6, but it is not shown in the Figures 23 to 31) causes the striker 138 to strike the rocker 140, which in turn transfers energy to the rocker 140. The rocker 140, after reversing the energy or the impulse, hits the ignition pin 135 and moves the pin 135 in the direction of the particular primer (not shown). As a result, the rocker 140 has two main duties. First, it transfers energy of striker 138, oriented rearwards at the energy of the ignition pin 135, facing forward. Secondly place, it acts as a trigger which allows relaxation to release the system.

The trigger joint 144 allows the trigger to rotate 142 and transfers the rotation of the trigger to the rocker 140. A front portion of the trigger 142 is used to grab rocker 138 when trigger triggers failure so that you don't press the relaxation. There are two contact surfaces different on the trigger joint 144. When the two guns are not involved in a fire, a first frontal contacting surface 152 (see FIGS. 24, 25) comes into contact with one of the rockers on a surface 154 contact with the trigger (see Figure 29) function of knowing the rocker 140 which has been set in a prestressed state towards safety (as we described below). After firing the first shot, the rocker which was not affected by the trigger is pushed out of the way via its associated rocker 138. In this way, the trigger joint can move forward and put in contact the second rocker with one of the second lateral contacting surfaces 156.

The flywheel 146 is used as a counterweight. At during the recoil of the rifle, the mass of inertia pulls the trigger articulation towards the rear of the rifle (in overcoming the prestressing force exerted by the spring 150) to disconnect it from the rocker. The mass of inertia 146 is free to move vertically thanks to its positioning in a U-shaped saddle 158. The mass of inertia 146 prevents the trigger from rotating around its point of pivoting when the rifle is for example lowered.

A hinge spring of the trigger 150 puts the hinge detent 144 in prestressed condition in one position facing forward. The spring also returns the trigger 142 in the position corresponding to an absence of fire.

In FIG. 32, another inventive aspect of the present invention. A 170 barrel (partly shown in section) is attached to section 32 corresponding to the guns and interfaces with section 34 occupied by the carcass (also partially shown in section). Barrel 170 includes a pair of opposite lugs 172 which are inserted into corresponding slots 174 (shown in dotted lines in Figure 32), so that the opposite studs 172 (a only shown in Figure 32) have locations that they can occupy in order to place the 170 barrel in a appropriate position. In order to fix the barrel 170 in place around of barrel section 32 and in a stopper arrangement suitable with respect to carcass section 34, a latch 176 put in a spring preload state pivots around the pivot point 178 to spread and contact a hook 180 with respect to a corresponding female area on a fixing block 182 extending downwards (which is represents a dotted line in Figure 32). The barrel 170 and the carcass 34 come into reciprocal contact along a first vertical surface 184 and along a surface of lower curved guide or stop 186. It should note that these surfaces, in combination with the bearing surface 145 (which comes into contact with an arcuate surface formed in the monoblock unit) are all arranged on one side of a defined pivot point of barrel assembly 32 relative to the carcass section 34. It should also be noted that the carcass defines surfaces 145 and the corresponding abutment surface relative to to the stop area 186. The surfaces on the barrel, which come abut carcass 34 to provide abutment areas 184, 186 act in combination with the bearing surface 47 (see figure 8) formed in the monobloc unit to petrol “tighten together” the surfaces on the carcass 34 which are part of the stop zones 184, 186, and the surface 145. This gives a tight fit for the joint created by the surfaces 186 (comprising at the times the appropriate portion of the 170 barrel and the appropriate portion carcass 34) and the curved track 145 formed in the carcass 34.

The tightening of the joint created by the surfaces above can be set. A setting life 190 is provided in the barrel 170. The adjusting screw 197 can be used to vary the pressure exerted by the drum 170 on the carcass 34 in the abutment zones 184, 186. In rotating the setting index 197; we modify the surface of the barrel pressing against the fixing block 182, which makes vary in turn the pressure exerted on the stop zones 184, 186. Note that the slot 174 is elongated to allow some adjustability relative to to the abutment surfaces 184, 186.

Yet another aspect of the articulation or mechanism lever concerns the surfaces which lean against each other the others in the stop zone 192 (as shown in dotted in Figure 32) when the lever mechanism closed. When closing the lever mechanism of the fire, a surface of the monobloc unit 60 comes to rest against a surface on the carcass 34 in the abutment zone 192. For set the time corresponding to the stopping of the mechanism to lever, we can include a steel insert of a side of the stop zone 192 to adjust the place where the abutment surfaces meet.

Another inventive aspect of the present invention relates to various security systems. A first system concerns a security system 200 incorporated in the articulation of detent 144. An extended flange 202, as shown in Figures 2 and 28, blocks the path of the striker 138 when does not press the trigger 142. Thus, in the case little likely where the gun is impacted by force external, which could occur when the firearm is oriented downwards, and in the case where the striker 138 is involuntarily released from the trigger arm 136, the flange extended 202 will block striker 138 (any of two or both) and prevent it from coming into contact with the rocker 140.

A second security system is represented in the Figures 33 to 38. In this system, a switch is used 204. The 204 safety sensor adjusts the gun firing sequence. Safety switch 204 can be positioned so that any of the cannons fire first before the other. As shown in Figures 35 to 36, the safety switch 204 can be either left or right and can be submitted to forward or backward movement. Movement left-right will determine which of the two barrels of the weapon to fire (the upper barrel or the lower barrel) that goes unload the trigger. Placing the power switch so that the "O" is exposed is going to cause that one obtains a discharge in the first place from the upper barrel ("Over" in English). Placing the power switch so that the "U" is exposed is going to cause that one obtains a discharge in the first place from the lower barrel ("Under" in English). Moving switch 204 forward will make the trigger operational in the shooting sequence designated by the left / right movement of safety switch 204

As shown in detail in Figures 33 to 39, the security system 200 more particularly includes a safety switch 204 having a ribbed area raised 208, a suspended median safety slide 210, and a pivoting selection arm 212. The slide of median safety 210, as shown in Figures 33, encompasses opposite areas 214 in the form of notches which are resized to accommodate extension sections, similar configuration, flanges 218 extending downwards from upper switch plate 204. One pin 220 connects the flanges 218 to each other. During assembly, the upper switch plate 204 is mounted on the outside of the gun carcass in inserting flanges 218 through holes (not shown) formed in the upper section of the carcass 34. The median safety slide 210 is then fixed by sliding over the extension sections 216 so that the middle safety slide 210 is suspended via extension zones 216. A second pin 222 is inserted through the carcass and through a corresponding hole 224 in the safety slider 210 and through which the orifice 226 of the selection arm 212, respectively for the purpose of fixing the assembly in square. A slot 228 formed in the selection arm 212 overlaps an elastic pin 220. In this way, we keeps the selection arm 212 in the same orientation front-rear than that of the upper safety plate 204. An indexing ball 230 is inserted into a notch 232 in the side lower of the intermediate support structure 210. The ball 230 is supported by a helical spring 234 (see figure 35) which puts the ball in a prestressed state contact with zone 232 in the form of a notch. Ball 230 indexes the swivel selection arm 212 by in relation to one of the two positions below: a position of Safety "commissioning" corresponding to a movement toward the back of switch 204 and a "put" position in service ”of security corresponding to the movement towards the front of switch 204.

The selection arm 212 also includes a shaft of selection 236, a socket 238, and a head 240 in the form of cone. A circular recess 240 of annular shape is defined by the cone-shaped end 240 and by the socket 238. When the safety switch 204 is placed in the safety "on" position (which corresponds to the the safety switch 204 is placed in a rear-facing position as shown in Figures 36 and 37), the socket 238 pulls the articulation of the trigger 144 backwards and away so that the surfaces 152, 156 (see Figures 23 to 31) cannot enter in contact with the rocker 140 and unload the firearm. When security is moved forward to take over safety "on" position (opposite to that shown in Figures 36 and 37), the socket 238 is moves forward and the trigger spring 150 (see figures 23 to 31) pulls the articulation of the trigger 144 towards the front, so that surfaces 152 and 156 are able to come into contact with the arms 140 of the rocker and unload the gun.

As shown in Figures 38 and 39, when the arm of selection 236 moved to the right, the surface 152 (see figure 27) comes into contact with the arm trigger 136 on the left side of the rifle and the surface 156 comes into contact with the trigger arm 136 disposed on the right side of the gun. When, moreover, the arm of selection of 136 moved left (see Figure 39), the surface 152 comes into contact with the rocker 140 on the left side of the gun and the surface 156 contacts the rocker on the right side of the gun. Via this movement to the right or to the left of safety switch 204, you can vary the rifle firing sequence with two superimposed smooth barrels.

An alternative embodiment of the switch 250 is shown in Figures 40 and 41.

Safety switch 250 includes a safety button 252 which, similarly to the embodiment anterior, includes a raised area with ribs. A safety plate 254 (in relation to which extends button 252) includes a portion in one piece of lower extension 256 which forms a slit longitudinal 258 into which are inserted stationary uprights 260, 262 coupled to the carcass 34. In in addition, is also coupled to the extension portion lower 256, a selection arm 264 which determines that of the two barrels (the upper barrel or the lower barrel) is aimed at in the first place, similarly to the previous embodiment. When we move the button 252 toward the far left side of the gun, a tree 246 will be on the right side of the vertical upright 266, so that the upper barrel fires in the first place. The moving the switch to the opposite side (giving rise to the displacement of the selection tree 264 in left side direction) will cause the barrel lower pulls in the first place.

A new surface with four faces extends from in solidarity with the selection tree 264. The ball 270 is indexed in an upward direction in contact with one of the four faces (the faces form an angle and converge at their lower edge 271, 273 as shown in FIG. 40). The ball has the possibility of coming into contact with a pair first slots or deep grooves 272 (only one being shown in Figure 40) or alternatively in contact with a pair of second shallow slots or grooves 274 (only one being shown in Figures 40). When the ball 270 moving in one of the grooves 272, the button 252 can move to take a position either left or right, and the ball will be switched between a brought into contact with one of the inclined surfaces which define the grooves 272. In addition, when the ball 270 moves in one of the slots 272 (via the movement towards the back of switch 252 so that the shafts 260, 262 move towards the front of the slot 258), the rifle is in a "safety" position or no shooting. When button 252 moves to take a forward position, i.e. the position of "Shot", the vertical upright 266 will hold the arm of selection 264 on the side of the upright 266 and will prevent the button 252 to switch from side to side. The shooting sequence guns is the same as described above compared to the embodiment of Figures 33 and 39 concerning the safety switch. A fixing device 276 is inserted through the carcass portion of the gun to keep safety assembly 250 in place. The device 276 can be inserted by screw thread into the carcass.

In accordance with the statutes, the invention has been described in a more or less specific language with regard to structural features and characteristics operating. However, it will be understood that the invention is not not limited to specific structures that have been represented and described, since the means revealed in this case include preferred forms of implementation work of the invention. Consequently, the invention is claimed in any of its forms or modifications with the proper scope of the appended claims properly interpreted in accordance with the doctrine of equivalents.

Claims (26)

Rifle apparatus with two superimposed smooth barrels comprising: a firearm comprising a barrel and a carcass; a curved abutment interface formed between the barrel and the carcass, the curved abutment interface comprising a convex portion and a concave portion, the convex portion exerting a pressing force on the concave portion; a pressure regulator coupled, either to the barrel or to the carcass, to adjust the pressing force. Rifle apparatus with two smooth barrels superimposed according to the claim 1, wherein the regulator comprises a barrel which connects the barrel of the rifle and the carcass to each other. Rifle apparatus with two smooth barrels superimposed according to the claim 1, wherein the regulator comprises a barrel adjustable which connects the barrel of the rifle and the carcass. Rifle apparatus with two smooth barrels superimposed according to the claim 1, wherein the regulator comprises a barrel connecting the rifle barrel and the carcass to each other, the bole having a length which is adjustable to vary the supporting force. Rifle apparatus with two smooth barrels superimposed according to the claim 1, wherein the curved stopper interface includes a convex portion and a concave portion. Rifle apparatus with two smooth barrels superimposed according to the claim 1, wherein the curved stopper interface includes a convex portion formed on the carcass and a concave portion formed on the barrel. Rifle apparatus with two smooth barrels superimposed according to the claim 1, wherein the convex portion and the portion concave define a pivot axis about which pivots one front end of the rifle relative to one end back of the gun, and in which the convex portion and the concave portion meets at the curved abutment interface, the pivot axis being spaced from the stop interface curve. Rifle apparatus with two smooth barrels superimposed according to the claim 1, wherein the concave portion and the portion convex meet and come into reciprocal contact the along the curved stop interface, the convex portion and the concave portion defining a pivot axis distant from the stop interface, a portion of the stop interface curve being concentric with the pivot axis. Rifle apparatus with two smooth barrels superimposed according to the claim 1, wherein the concave portion and the portion convex meet and come into reciprocal contact the along the curved stop interface, the convex portion and the concave portion defining a pivot axis distant from the stop interface, the curved stop interface comprising less than a semicircle. Rifle apparatus with two smooth barrels superimposed according to the claim 1, wherein the concave portion and the portion convex meet and come into reciprocal contact the along the curved stopper interface, the curved interface allowing the front end to pivot relative to the rear end so that the concave portion and the convex portion come into reciprocal contact by slip when the front end pivots relative to the rear end. Rifle apparatus with two smooth barrels superimposed according to the claim 1, wherein the concave portion and the portion convex define a pivot axis around which pivots the front end relative to the rear end, the axis of pivoting being disposed on the lower half of the rifle apparatus. Rifle apparatus with two smooth barrels superimposed according to the claim 1, wherein the rifle apparatus comprises a vertical dimension from top to base less than 2 ½ inches. Rifle apparatus with two smooth barrels superimposed according to the claim 1, wherein the rifle apparatus comprises a vertical dimension from top to bottom less than 2 ⅜ inches. Rifle apparatus with two superimposed smooth barrels comprising: a firearm comprising a barrel and a carcass; a curved abutment interface formed between the barrel and the carcass, the curved abutment interface comprising a convex portion and a concave portion, the convex portion exerting a pressing force on the concave portion; a prestressing force coupled, either to the barrel or to the carcass, to adjust the bearing force. Rifle apparatus with two superimposed smooth barrels comprising: a proximal end comprising a carcass and a plate; a distal end comprising at least one gun barrel; a joint formed between the proximal end and the distal end, the joint allowing the proximal end to pivot relative to the distal end about a pivot axis, the joint comprising a curved track between the proximal end and distal end, the domed track providing a sliding contact interface between the distal end and the proximal end; a force applicator operatively coupled to the sliding contact surface for exerting a friction force on the sliding contact surface. Rifle apparatus with two smooth barrels superimposed according to the claim 15, wherein the force applicator is adjustable to vary the friction force. Rifle apparatus with two smooth barrels superimposed according to the claim 15, wherein the contacting surface by sliding includes the only surface which supports a recoil force when discharging the firearm. Rifle apparatus with two smooth barrels superimposed according to the claim 15, further comprising a guide track opposite the curved track, the guide track providing a support to the joint in position opposite to the track bulged. Rifle apparatus with two smooth barrels superimposed according to the claim 15, further comprising a guide track comprising a concave guide portion and a portion of convex guidance, the guide track being coupled so operating at the carcass, the guide track providing a support to the joint in position opposite to the track bulged. Firearm apparatus, comprising: a portion serving as a carcass / plate; a portion serving as a barrel, comprising at least one barrel; a detent assembly comprising a striker, an ignition pin and an element for the prestressing of the striker operatively coupled to the striker to exert a prestressing force on the striker, the striker being subjected to displacement towards the front end of the firearm to overcome the pretensioning force of the striker preloading element when the firearm is loaded, the striker generating an impact force towards the rear end of the firearm when discharging the firearm to activate the ignition pin. Firearm apparatus according to claim 20, further comprising a rocker interposed between the striker and the ignition pin, the rocker reversing the force impact of the striker and directing the impact force towards the front end of the gun towards the spindle ignition. Firearm apparatus according to claim 20, further comprising a rocker interposed between the striker and the ignition pin, the rocker having a first tip for receiving the impact force of the striker and a second end to reverse and orient the force impact towards the front end of the gun towards of the ignition pin. Firearm apparatus according to claim 20, further comprising a rocker interposed between the striker and the ignition pin, the rocker having a first end for receiving the impact force of the striker, the rocker having a second end for reversing and direct the impact force towards the front end of the weapon light towards the ignition pin, the rocker having a pivot point between the first end and the second end. Firearm apparatus according to claim 20, further comprising a rocker interposed between the striker and the ignition pin, and further comprising an element for the preloading of the ignition pin, the rocker reversing the impact force of the striker and directing the impact force towards the spindle ignition to the front end of the gun, the force impact subject to an inversion striking the spindle with sufficient force to overcome the setting preload state of the ignition pin and for unload the gun. Method for discharging a firearm, comprising: providing a firearm comprising a distal end having a barrel and a proximal end having a plate and a carcass; providing a detent assembly comprising a detent, an ignition pin and a spring preload; cock the trigger to overcome the preloading of the spring, the preloading of the spring providing a compression force directed towards the end occupied by the butt of the firearm; operate the trigger to release the preloading state of the spring and provide a rearward-facing compression force in the direction of the end occupied by the butt of the firearm; redirect the compressive force toward the muzzle end of the gun and cause the ignition pin to move forward toward the occupied gun end by mouth for the purpose of discharging the firearm. The method of claim 25, further comprising: procure a rocker; operatively link the spring preload and the ignition pin via the rocker; the reorientation of the compressive force being implemented by the rocker which receives the compressive force from the preloading of the spring and which reorients the force in the direction of the ignition pin.

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