ES2350375T3 - MONOTIRO RIFLE. - Google Patents

Abstract

The invention relates to a single-shot rifle, comprising a receiver (1), a barrel (6) which is attached to the receiver (1), a bolt (8) housing a firing pin (24), located in correspondence with the back end of the barrel (6), wherein the bolt (8) and the back end of the barrel (6) are configured such that the bolt (8) can be coupled to the back end of the barrel (6) by means of a sliding movement in a direction perpendicular to the longitudinal direction, such that the bolt (8) can travel between a loading position in which it leaves the back end of the barrel (6) clear such that the user can introduce a bullet in a chamber of the barrel (6) through said back end of the barrel (6), and a firing position in which said chamber is locked by said bolt (8), the barrel (6) and the bolt (8) being attached by means of at least one rib (61) entering at least one channel (81).

Description

OBJECT OF THE INVENTION

The present invention relates to a high precision single shot rifle, that is to say that it allows a single shot per load, the ammunition being used as a metal cap, which has application in the arms industry, in which the opening and loading operations are carried out manually by lever, allowing to quickly and easily change the barrel of the rifle, which facilitates the performance of maintenance and cleaning of the rifle, in addition to the great versatility that this entails, by allowing the use of different cannons and calibers different with the same rifle.

BACKGROUND OF THE INVENTION

Traditional monotiro backload rifles, as described in US Patent No. US-511633-A, consists of the combination of a backload firearm with the barrel of the same, of a cylinder head block that has a movement interlocking slide on the thick end of the barrel, which adapts thereto, a firing pin pivoted in said block, a trigger also pivoted in the block, and depending on it, and adapted to co-act with said firing pin, and a spring to actuate the cylinder head block in its upward movement.

This weapon has a barrel, a cylinder head, built with a chamber, and a protective plate, fixed at its rear end to the cylinder head. The thick end of the barrel of the weapon is constructed with two corresponding transverse grooves, inclined forward with respect to the vertical. The weapon further comprises a cylinder head block, constructed with a recess or chamber, which is constructed with two inclined flanges, in this way, the cylinder head block is adapted to have an inclined sliding interlocking movement on the thick end of the barrel. of the weapon

The cylinder head block is supported by the support of its upper end on the barrel of the weapon, and the support of its lower end against the walls of an opening, formed in the protection plate, and through which it passes. In this way it is locked or held in its open position against the main spring tension.

A firing pin is fixed on a pivot mounted on the cylinder head block.

A trigger, fixed to a horizontal pivot, is mounted on the end

Bottom of cylinder head block.

The main spring has the double function of closing the cylinder head block and keeping it in this closed position, and operating the firing pin by firing the cartridge into the gun.

To load the weapon, the cylinder head block is pressed down against the tension of its main spring, with its tongue, whereby its lower end is thrown forward. The block will be held in its open position during weapon loading. The block is allowed to return to its closed position by its main spring which is enclosed by the downward pressure on the tongue of the block, thereby preventing it from closing with any blow. The firing pin is cocked against the tension of the spring.

In existing rifles, the barrel is linked to or fastened to the bolt by means of threading or other similar means that prevent the user from separating the barrel and the bolt, having to resort to a gunsmith, due to the complexity and the specific instruments required for assembly and disassembly operations.

Some of the rifles referred to in the previous paragraph correspond to percussion rifles such as the Sharps rifle comprising mechanisms called "side-hammer" or "Sharps-Borchardt", or the rifle corresponding to the manufacturer Marlin, specifically the rifle model "Ballard", as well as the Winchester rifle type "coil spring", as is the "Low-wall Musket" model.

Among the disadvantages of these rifles is the fact that they do not allow the cannon to be exchanged quickly and easily, which is very impractical since it does not allow the use of different calibers and configurations of cannons, or to easily disassemble the barrel for cleaning. by the user.

Also, given the link between the barrel and the bolt on the existing rifles, these rifles often have poor precision as a result of a transmission of tensions and efforts to the rifle shell.

Finally, on some occasions, as a result of defects in the ammunition, or overlaps, the percussion needle pierces the piston during firing, which produces a high pressure flow of fire towards the shooter through the needle's own conduit of percussion, specifically towards his face and eyes, with the consequent risk of serious accident that this entails.

DESCRIPTION OF THE INVENTION

The present invention relates to a single shot rifle, according to the

claim 1.

In this way, an optimal contact surface between bolt and barrel is provided. On the other hand, the union between bolt and barrel is achieved without the intervention of the housing, something that represents a difference with respect to many conventional systems. In this way, the housing does not have to withstand the pressures and efforts that occur on the bolt at the time of firing, from inside the chamber. This allows, for example, that the carcass is manufactured with lightweight materials or alloys, without reducing the strength of the assembly. On the other hand, it is very easy to disassemble the bolt with respect to the barrel, for example, for cleaning, and also the subsequent assembly of the bolt.

The central support element of the rifle is the casing, on which the barrel is supported, supported or held, which, according to a preferred embodiment, is mounted to a solid piece or element called monobloc, with the collaboration of a key positioning and a pair of anchor bolts that join the solid or monobloc element to the housing. In the case, the firing mechanisms and safety means and the weapon's own stock are also mounted.

In accordance with a preferred embodiment of the rifle of the invention, the fixing means comprise a positioning key, in order to ensure that the position of the barrel relative to the housing is always the same, also ensuring a precise sliding between the bolt and the Canyon.

Thus, an easy and fast assembly and disassembly of the barrel and the casing is achieved, said casing being the part that houses practically all the mechanisms of the rifle, that is to say a metal part that is mounted in the barrel with the preferred collaboration of the positioning key , which is bolted to the housing.

Located adjacent to the canyon is the bolt, inside which the percussion needle is housed, which is operated by a spring, in a rear area of the bolt, that is to say in an area opposite the cannon.

At the rear of the rifle, behind the casing, is the stock, which can have a wide variety of configurations and materials, which can be exchanged and combined with the rest of the rifle's elements by linking it to the casing, by example by means of a clamping screw.

Unlike the closure systems of currently existing rifles, which comprise a sliding block, the rifle bolt that the invention proposes has at least one channel configured to slide over the

the barrel itself, said bolt being firmly attached to the barrel.

The possibility of the closure system having two or more rows of channels and engagement ribs is contemplated, although with a single row the closure system offers an optimal contact surface, several times greater than the contact surface of the closure. securing said elements in any conventional rifle whose bolt comprises traditional locking lugs.

In addition, as a result of the fact that the connection or clamping between the barrel and the bolt is carried out without the collaboration of the carcass, maximum precision in the shot is achieved, since an advantage presented by the rifle of the invention with respect to the sliding closure systems of the rifles of the state of the art, is that no stresses or stresses are transmitted to said casing, which allows its manufacture with light materials or alloys without loss of resistance of the assembly and with the consequent saving of weight and even economic that this entails .

The housing, cylinder head, lever and other mechanisms assembly constitute a module configured to be coupled or linked to cannons of different types, configurations and calipers, thus having an extremely versatile rifle, which allows its use, quickly and simple, with different caliber cannons.

It is contemplated that said at least one nerve comprises at least one nerve located at the rear end of the barrel, and in which said at least one channel comprises at least one channel located in the bolt and configured to receive said at least a nerve, so that with said at least one nerve housed in said at least one channel the bolt is attached to the barrel so that it cannot move backwards with respect to the barrel, but so that it can be displaced in a direction substantially perpendicular to the barrel, by sliding said at least one rib in said at least one channel.

According to a practical embodiment of the invention said, at least one, nerve comprises at least two nerves, and said, at least one, channel comprises at least two channels.

Likewise, it is contemplated that said at least one nerve extends around at least a part of the barrel circumference, in correspondence with the rear end of the barrel.

The rifle that the invention proposes comprises several sub-assemblies, some of which have a modular character, which allows a quick replacement or replacement thereof, as for example in the case of the stock or the barrel.

It is contemplated that the barrel, in correspondence with its rear part, is provided with a solid element, also called monobloc, for fixing the barrel to the housing. Preferably said solid element has holes for the connection between the barrel and the housing by means of screws, which are screwed into said holes.

Traditionally, in the state-of-the-art rifles, the fixation between said solid element and the barrel is carried out by means of a recess in the rear end of the barrel, in order to introduce it into a longitudinal hole having said solid element. The clamping between both pieces is done by welding silver, which sometimes fails, either by an incorrect application, by the deterioration caused by the passage of time or by the use of the weapon, causing serious inconveniences, such as that the barrel leaves triggered, with the consequent risk of accident, in addition to the fact that said silver welding needs to be executed very precisely, since otherwise there are porosities that, when the cannon is roughed, allow the penetration of salts from the flooring that later oozes outward, producing an unpleasant aesthetic appearance and dirt.

In order to solve the problem set forth in the preceding paragraph, the rifle barrel proposed by the invention is configured to be introduced frontally into the solid element. At the end close to the housing, the barrel comprises at least one shoulder, close to the rib, which acts as a stop limiting the exit of the barrel from the solid element forward. Said end of the barrel that is configured to be in contact with the solid element may be threaded or not.

Once the barrel has been introduced into the solid element, and depending on the threaded case, a strong resin or glue is introduced in order to fill the gaps that may remain between the barrel and the solid element. Once the barrel has been fixed to the solid element and the clearances filled with the glue, the rear end of the barrel is machined to obtain the ribs that are part of the means for fixing the barrel to the bolt.

Thus, an easy and fast assembly and disassembly of the barrel and the casing is achieved, said casing being the part that houses practically all the mechanisms of the rifle, that is to say a metal part that is mounted in the barrel with the preferred collaboration of the positioning key , which is bolted to the housing. For this, the barrel fits into an existing channel for this purpose in the solid or monobloc element. The connection between the casing and the barrel is made firm by means of the screws, so that simply by loosening said screws the barrel is easily separated from the housing, which then allows the barrel to be separated from the bolt.

Likewise, it is contemplated that the rifle comprises a handrail, also known as front or handguard, attached to the barrel by means of a pin threaded into the solid element and extending substantially parallel to the barrel, the pin having a substantially conical surface that is Insert into a clamp in which the pin is held by a screw.

In the distal part of the rifle, that is to say in the part corresponding to the barrel, is the handrail, also called the handguard or front, which is not fixed or attached to the barrel, but is fixed to the solid or monobloc element by means of a pin that Its final part has a conical area configured to receive the action of a screw that is contained in the clamp, which in turn is firmly attached to the handrail.

It is contemplated as a possibility that the rifle comprises at least one pivotable lever around an axis, said lever being coupled to the bolt for its actuation, so that when the lever pivots in a first direction, said lever moves the bolt towards the loading position. , and when the lever pivots in a second direction opposite to the first direction, the lever moves the bolt towards the firing position.

In order to allow the bolt to open and close, the rifle comprises a lever configured to rotate a shaft specifically.

For its opening and its fixation, or immobilization, the lever has a tilting latch on an axis, said latch being configured to engage in a fixed pin to the housing for fixing the lever. To provide sufficient closing force to this mechanism, the latch has a spring that is fixed at one end to the lever by means of a pin. On the other hand, the travel of said latch is limited by another pin.

It is contemplated that the lever is coupled to the bolt by means of a connecting element pivotally coupled to the bolt and also pivotably coupled to the lever.

The lever is linked in an articulated way with the bolt by means of a connecting element, which can consist of a chain or connecting rod, which has two axes, on the one hand an axis that articulates in the bolt and on the other hand an axis that articulates on the lever

On the other hand it is contemplated that the lever is associated with an extractor configured for the extraction of sheaths, so that when said lever pivots in said first direction, said lever makes said extractor slide back, so as to cause the extraction of a sheath.

According to a preferred embodiment, the lever is associated to said extractor by means of a pivotable arm, or extraction lever, which engages with the extractor and is configured so as to follow the movement of the lever for at least a part of the travel of the lever between the loading position and the firing position of the bolt.

The pivotable arm serves to transmit the movement of the lever to the extractor, so that the pivotable movement of the lever becomes a linear movement of the extractor, during a part of the lever travel.

In this way the lever, in addition to the function of opening the bolt, has other additional functions. The first of these additional functions consists in producing or causing the expulsion or extraction of the ammunition sheaths fired from the barrel chamber. To do this, concentrically to its axis, the lever has a bushing configured to allow the pivoting arm to rotate, also called the extraction lever, which in turn is configured to transform the movement of rotation of the lever into a movement of translation or sliding of the extractor.

The extraction system comprises a linear extractor located below the rifle chamber, said extractor being configured to engage with the pivotable arm, in the same way that a pinion-rack mechanism engages.

When the user acts by lowering the opening lever, during the first part of its travel it does not act on the pivotable arm. Then, when the bolt is placed in a sufficiently low position to allow removal, contact or engagement occurs between the lever and the pivotable arm, which is produced by means of a small tooth having said lever and said pivotable arm so that they start spinning together.

The lever houses a piece that, simultaneously with the above, receives the action or thrust of the spring, so that said piece penetrates into a small cavity that is below the pivotable arm, making the lever and the pivotable arm remain Temporarily united or linked.

The rotational movement of the pivotable arm acts by causing the extractor to slide backwards, producing the extraction of the metal sheath or sleeve of the used ammunition that is housed in the barrel.

To close the bolt again and collect the extractor, it is sufficient for the user to act by closing the lever, which, being in solidarity with the pivotable arm by means of the previously described piece, piece that acts by pushing the extractor, and therefore to the ammunition, towards indoors.

Once the extractor reaches a top position, if the lever is still rotated, the temporary union or linkage between the lever and the pivotable arm is broken, which is easily noticeable by the user in the form of a small or light click turn resistance. Then, to fully close the rifle, the user keeps turning the lever until the bolt and lever are fully closed.

It is contemplated that the extractor is provided with a pod extraction pin, which is housed in said extractor and is pressed by a spring, said pin being configured to slide in a slot in the barrel for at least part of the travel of the extractor, and to engage with a sheath used for its extraction from the chamber.

The extractor, at its rear, has a pin that is actuated or pressed by the spring, which hooks into an extraction slot in the rear of the sheath of the ammunition used.

According to a preferred embodiment of the invention, the rifle comprises a locking element pushed by a locking spring towards a position in which it engages with a trigger, as well as a moving element movable between a position in which it prevents the firing of the rifle and other position in which it does not prevent the firing of the rifle, the safety element being attracted towards the position in which it prevents the firing of the rifle by an insurance spring, the insurance element and the securing element being arranged so that when the bolt is moved towards the loading position, the securing element pushed by the securing spring is moved allowing the safety element to move to the position in which it prevents the firing of the rifle.

A second additional function that the lever has is to arm, activate or load, automatically the system or the percussion means. To do this, when the bolt is lowered, the securing element moves and descends, actuated or driven by the latch spring. As a direct consequence of the above, the insurance element is released and automatically fired backwards due to the effect or the action of the insurance spring, whose action is opposite to the action of the sear spring, so that the rifle is in a safe or lock position.

The safety element, which may consist of a knurled lever, is located on the rifle's casing in an easily accessible position for the thumb of the hand with which the user fires, allowing ambidextrous use.

Said insurance element is configured to be set, or activated, and removed, or deactivated, by the user, having the particularity that said insurance element is always automatically placed in the active position when the bolt is opened. to load or unload the weapon, preventing the firing of the rifle in said active position.

In order for the rifle to meet optimal conditions, it is necessary to arrange said safety element, since the rifle automatically loads the firing pin when the lever rises. For this, the insurance element has an insurance spring that acts by pulling said insurance element as soon as the securing element is released from the firing pin, that is, by lowering the lever. Therefore, when said lever is raised, in order to compress the percussion spring, the safety element is already operating, that is, it is already activated. In short, to make a shot it is always necessary for the user to voluntarily remove the insurance, placing it in the inactive position.

According to a preferred embodiment, the rifle comprises a trigger of great sensitivity that is provided with a double regulation. To do this, the trigger has, in its lower part, a regulation screw, which by means of its tightening ensures that the trigger recoils, therefore the coupling of the upper area with the locking element is diminished, and therefore the trigger is softens

Once the shot has been made, the rifle has the end-of-stroke adjustment screw, which runs through the inside of the trigger spring, which through its tightening manages to reduce or reduce the trigger travel.

Likewise, it is contemplated that the securing element is arranged so that when the bolt moves towards its loading position, the securing element engages with the trigger.

It is contemplated that the rifle comprises a firing pin configured to impact the percussion needle when the trigger is pulled with the safety element in the position where it does not prevent the firing of the rifle, the firing pin being pivotally attached to the bolt so that it moves with the bolt when the bolt moves between the firing position and the loading position.

When the securing element descends, it contacts or engages with the trigger. When the bolt is lifted, the firing pin contained in said bolt is retained by the securing element, leaving the rifle in an armed position.

The firing pin is located inside the bolt and is configured to strike on the percussion needle, so that said percussion needle, in turn, strikes a fulminating capsule of ammunition producing its detonation.

The possibility that the firing pin is related to the securing element is contemplated so that it is retained by the securing element when the bolt moves from the loading position to the firing position, so that when the bolt reaches the position of shot, the firing pin is armed to shoot towards the percussion needle.

The monotiro rifle described above may also comprise a fire protection element, associated with the bolt and configured to deflect that an eventual exit of the fire from the rearward shot could damage the user.

The bolt is closed with the fire protection element, also called a safety baffle, which consists of a piece of steel that is fastened to the bolt by a screw. Inside, the bolt has the firing pin that is configured to rotate with respect to a firing pin shaft and be operated by a main spring.

On some occasions, as a result of defects in ammunition,

or overlaps, the percussion needle pierces the piston during firing, which produces a high pressure flow of fire towards the shooter through the conduit of the percussion needle itself, specifically towards his face and eyes, with the consequent risk of a serious accident that entails.

In order to increase the safety of the rifle, by eliminating the effect described in the previous paragraph, the rifle may comprise a fire protection element, that is to say a safety deflector consisting of a piece of steel that is firmly attached to the bolt, said fire protection element being configured to act as a deflector of the fire flow produced during firing towards interior areas, with lower exhaust, of the housing causing said bolt to lose pressure and thus avoiding accidents

previously commented.

The fire protection element may comprise a deflection surface, configured to deflect sparks into the housing, preventing them from reaching the user's eyes. Preferably said deflection surface is configured so that, in the vertical plane that passes through the barrel when the rifle is in a position of conventional use, an angle of approximately 45 degrees with the longitudinal direction in which the barrel extends.

For this, the fire protection element comprises an inclined plane, preferably occupying an inclination of 45 ° when the rifle is in a firing position, which is located in front of the conduit of the percussion needle, so that by this arrangement the sparks bounce and they are directed just down, avoiding to affect the face of the rifle user.

Thus, in accordance with the described invention, the monotiro rifle that the invention proposes constitutes an advance in the rifles used up to now, and solves in a completely satisfactory way the problem previously exposed, in the line allowing to carry out in a simple way the disassembly operations and assembly of the barrel and the bolt, all with a rifle that does not transmit tensions to the housing, which greatly increases the accuracy of shooting.

DESCRIPTION OF THE DRAWINGS

To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical implementation thereof, a set of drawings is attached as an integral part of said description. In an illustrative and non-limiting manner, the following has been represented:

Figure 1.- Shows an exploded plan view of the rifle that the invention proposes.

Figure 2.- Shows a longitudinal section of the mechanism of action of the rifle in the position at the time of firing, in which the flow of gases in the area corresponding to the fire protection element has been represented with arrows.

Figure 3.- Shows a detail of the previous figure corresponding to the lever and the pivotable arm.

Figure 4.- Shows a longitudinal section of the mechanism of action

of the rifle in a first extraction position.

Figure 5.- Shows a detail of the previous figure corresponding to the

lever and pivotable arm.

Figure 6.- Shows a longitudinal section of the mechanism of action of the rifle in a second extraction position.

Figure 7.- Shows a detail of the previous figure corresponding to the lever and the pivotable arm.

Figure 8 shows a longitudinal section of the mechanism of action of the rifle in a position mounted with the active safety.

Figure 9.- Shows a section like the one in the previous figure in the same position, in which the insurance is inactive.

Figure 10.- Shows a longitudinal section of the rifle, in which the front mooring system can be seen.

Figure 11. - It shows a partial perspective view of the barrel and the bolt according to an embodiment in which the barrel has a fixing rib and the bolt has a channel to accommodate said barrel rib.

Figure 12.- Shows a partial perspective view of the barrel and the bolt according to an embodiment in which the barrel has two fixing ribs and the bolt has two channels.

Figure 13.- Shows two views A and B in perspective in which the barrel and the bolt can be seen in a mounting position and in a disassembly position respectively.

Figure 14.- Shows a plan view, from a zenith point of view, of the area corresponding to the rifle's mechanisms of action, in which the connection between the bolt and the barrel can be seen.

Figure 15.- Shows two elevational views of an assembly sequence between the barrel and the solid or monobloc element, the sectioned solid element having been represented in view A for a better appreciation of the introduction sequence, while in the view B these elements are shown in a coupling or assembly situation, position limited by a recess that has the barrel.

PREFERRED EMBODIMENT OF THE INVENTION

In view of the aforementioned figures, it can be seen that in one of the possible embodiments of the invention, the single-shot rifle proposed by the invention comprises a housing (1) and a barrel (6) extending in a longitudinal direction and having an end front and one rear end, being said

barrel (6) attached to the housing (1).

On the other hand, the rifle comprises a bolt (8) that houses a percussion needle (24), the bolt (8) being located in correspondence with the rear end of the barrel (6).

According to the invention, the bolt (8) and the rear end of the barrel (6) are configured so that the bolt (8) can be coupled to the rear end of the barrel (6) by a sliding movement in a direction substantially perpendicular to the longitudinal direction, so that the bolt (8) can be moved, by said sliding movement, between a loading position in which the rear end of the barrel (6) is released so that a user can insert a cartridge into a cannon chamber

(6)

by said rear end of the barrel (6), and a firing position in which said chamber is closed by said bolt (8), the barrel (6) and the bolt (8) being connected by at least one rib (61) which enters at least one channel (81), so that said sliding movement is allowed and so that the bolt (8) is prevented from moving backwards with respect to the rear end of the barrel (6).

The central support element of the rifle is the casing (1), on which the barrel (6) is supported, supported or held by a positioning key

(25)

fastened with a screw (35). This arrangement also allows fixing the final part of the barrel (6), as can be seen in any of figures 2 to 10.

In said figures a preferred embodiment of the rifle of the invention is shown, in which the fixing means comprising said positioning key (25) can be seen, in order to ensure that the position of the barrel (6) with respect to the housing (1) always be the same, also ensuring a precise sliding between the bolt (8) and the barrel (6).

Located adjacent to the barrel (6) is the bolt (8), inside which the percussion needle (24) is housed, which is operated by a spring (27), in a rear area of the bolt (8), that is to say in an area opposite the canyon (6).

At the rear of the rifle, behind the casing (1), is the cylinder head (3), which can have a wide variety of configurations and materials, which can be exchanged and combined with the rest of the elements of the rifle through its connection to the housing (1) by, for example, a clamping screw (55).

The approach means, or closing system, of the rifle of the invention are represented in Figures 11 and 12. The bolt (8) of the rifle that the invention proposes has at least one channel (81) configured to slide on the own barrel (6), said bolt (8) being firmly attached to the barrel (6).

A variant embodiment is shown in Figure 12 in which the closing system has two more rows of channels (81) and engagement ribs (61).

In Fig. 11 a preferred embodiment is shown comprising a rib (61) located at the rear end of the barrel (6) and a channel (81) located in the bolt (8) and configured to receive said rib (61), of so that with said rib (61) housed in said channel (81) the bolt (8) is attached to the barrel (6) so that it cannot move backwards with respect to the barrel (6), but so that it can be moved in a direction substantially perpendicular to the barrel (6), by sliding said rib (61) into said channel (81).

Also said rib (61) extends around at least a part of the circumference of the barrel (6), in correspondence with the rear end of the barrel (6).

The barrel (6), in correspondence with its rear part, is provided with a solid element (7), also called monobloc, for fixing the barrel (6) to the housing (1).

As can be seen in views A and B of Figure 15, the barrel (6) is configured to be introduced frontally into the solid element (7). At the end close to the housing (1), the barrel (6) comprises a shoulder (82), close to the rib (61), which acts as a stop limiting the exit of the barrel (6) with respect to the solid element (7) towards ahead.

Once the barrel (6) has been introduced in the solid element (7), a strong resin or glue is introduced in order to fill the gaps that may remain between the barrel (6) and the solid element (7).

Preferably said solid element (7) has holes for the connection between the barrel (6) and the housing (1) by means of screws (33), which are screwed into said holes.

Thus, an easy and fast assembly and disassembly of the barrel (6) and the casing (1) is achieved, said casing (1) being the part that houses practically all the mechanisms of the rifle, that is to say a metal part that is mounted in the barrel (6) with the preferred collaboration of the positioning key (25), which is screwed to the housing (1). For this, the barrel (6) fits into an existing channel for this purpose in the solid element (7). The connection between the housing (1) and the barrel (6) is made firm by means of the screws (33), so that simply by loosening said screws (33) the barrel (6) is easily separated from the housing (1), which then allows the barrel (6) to be separated from the bolt (8).

The rifle comprises a handrail (2) attached to the barrel (6) by means of a pin (21) screwed into the solid element (7) and which extends substantially in parallel with the barrel (6), the pin (21) having a surface substantially conical that is inserted into a clamp (22) in which the pin (21) is held by a screw (53).

As can be seen in figure 10, in the distal part of the rifle, that is to say in the part corresponding to the barrel (6), there is the handrail (2), also called the handguard or front, which is not fixed or attached to the barrel (6), but is fixed to the solid element (7) by means of a pin (21) which in its final part has a conical area configured to receive the action of a screw

(53) that is contained in the clamp (22), which in turn is firmly attached to the handrail (2).

The rifle comprises a lever (10) pivotable about an axis (38), said lever (10) being coupled to the bolt (8) for its actuation, so that when the lever (10) pivots in a first direction, said lever (10) moves the bolt (8) towards the loading position, and when the lever (10) pivots in a second direction opposite the first direction, the lever (10) moves the bolt (8) towards the firing position.

For its opening and its fixation, or immobilization, the lever (10) has a pivoting latch (11) on an axis (39), said latch (11) being configured to engage in a pin (45) fixed to the housing (1). ) for fixing the lever (10). To provide sufficient closing force to this mechanism, the latch (11) has a spring (31) that is fixed at one end to the lever (10) by means of a pin (40). On the other hand, the path of said latch (11) is limited by another pin (52), as shown, for example, in Figure 4.

The lever (10) is coupled to the bolt (8) by means of a connecting element (19) pivotally coupled to the bolt (8) and also pivotably coupled to the lever (10).

The lever (10) is linked in an articulated manner with the bolt (8) by means of a connecting element (19), which consists of a chain or connecting rod, which has two axes, on the one hand an axis (36) that articulates in the bolt (8) and on the other hand an axis (37) that articulates in the lever (10).

On the other hand the lever (10) is associated with an extractor (17)

configured for the extraction of sheaths, so that when said lever (10) pivots in said first direction, said lever (10) slides said extractor (17) backwards, so that it causes the extraction of a sheath.

According to a preferred embodiment, the lever (10) is associated with said extractor (17) by means of a pivotable arm (20), or extraction lever, which engages with the extractor (17) and is configured so as to follow the movement of the lever (10) for at least a part of the travel of the lever (10) between the loading position and the firing position of the bolt (8).

The pivotable arm (20) serves to transmit the movement of the lever

(10) to the extractor (17), so that the pivotable movement of the lever (10) becomes a linear movement of the extractor (17), during a part of the lever travel (10)

In this way the lever (10), in addition to the function of opening the bolt (8), has other additional functions. The first of these additional functions consists in producing or causing the expulsion or extraction of the ammunition sheaths fired from the barrel chamber (6). To do this, concentrically to its axis (38), the lever (10) has a bushing (23) configured to allow the rotation of the pivotable arm (20), also called the extraction lever, which in turn is configured to transform the turning movement of the lever (10) into a translation or sliding movement of the extractor (17).

The extraction system comprises a linear extractor (17) located below the rifle chamber, said extractor (17) being configured to engage with the pivotable arm (20), in the same way that a pinion-rack mechanism engages.

When the user acts by lowering the opening lever (10), during the first part of its travel it does not act on the pivotable arm (20). Then, when the bolt (8) is placed in a position of sufficient descent to allow removal, contact or engagement occurs between the lever (10) and the pivotable arm (20), which is produced by means of a small tooth having said lever (10) and said pivotable arm (20) so that they begin to rotate together.

The lever (10) houses a piece (58) that, simultaneously with the above, receives the action or thrust of the spring (57), so that said piece (58) penetrates into a small cavity that is below the pivotable arm (20), making the lever (10) and the pivotable arm (20) temporarily attached or linked.

The rotational movement of the pivotable arm (20) acts by causing the extractor (17) to slide backwards, producing the removal of the metal sheath or sleeve of the used ammunition that is housed in the barrel (6).

To re-close the bolt (8) and collect the extractor (17) it is sufficient for the user to act by closing the lever (10), which, being in solidarity with the pivotable arm (20) by means of the piece (58) described above, piece (58) acting by pushing the extractor (17), and therefore the ammunition, inwards.

Once the extractor (17) reaches a stop position, if it continues to act by turning the lever (10), the temporary union or link between the lever (10) and the pivoting arm (20) is broken, which is easily noticeable by the user in the form of a small click or slight resistance to turning. Then, to fully close the rifle, the user continues to turn the lever (10) until the bolt (8) and the lever (10) are fully closed, all as shown in Figures 2 to 7.

On the other hand, the extractor (17) is provided with a sleeve extraction pin (18), which is housed in said extractor (17) and is pressed by a spring (56), said pin (18) being configured to slide in a groove in the barrel (6) for at least a part of the path of the extractor (17), and to engage with a sheath used for its removal from the chamber.

As can be seen in Figure 6, said extractor (17), at its rear, has a pin (18) that is actuated or pressed by the spring (56), which engages in an extraction slot of the rear of the ammunition sheath used.

According to a preferred embodiment of the invention, the rifle comprises a locking element (13) pushed by a locking spring (30) towards a position where it engages with a trigger (14), as well as a safety element (16 ) movable between a position in which it prevents the firing of the rifle and another position in which it does not prevent the firing of the rifle, the safety element being

(16) attracted to the position where it prevents the firing of the rifle by an insurance spring (26), the insurance element (16) and the securing element (13) being arranged so that when the bolt (8) is moves towards the loading position, the securing element (13) pushed by the securing spring (30) moves allowing the safety element (16) to move to the position where it prevents the firing of the rifle.

A second additional function that the lever (10) has is to arm, activate or load, automatically the system or the percussion means. To do this, when the bolt (8) descends, the securing element (13) moves and descends, actuated or driven by the latch spring (30). As a direct consequence of the foregoing, the insurance element (16) is automatically released and fired backwards due to the effect or the action of the insurance spring (26), whose action is opposite to the action of the sear spring (30) , so that the rifle is in a safe or locked position, position shown in Figure 8.

The safety element (16) is located on the casing (1) of the rifle in an easily accessible position for the thumb of the hand with which the user fires, allowing ambidextrous use.

Said insurance element (16) is configured to be set, or activated, and removed, or deactivated, by the user, having the particularity that said insurance element (16) is always automatically placed in the position active when the bolt (8) is opened to load or unload the weapon, preventing the firing of the rifle in said active position.

In order for the rifle to meet optimal conditions, it is necessary to arrange said safety element (16), since the rifle automatically loads the firing pin (12) when the lever (10) rises. For this, the insurance element (16) has an insurance spring (26) that acts by pulling said insurance element (16) as soon as the securing element (13) is released from the firing pin (12), that is, when lowering the lever (10). Therefore, when said lever (10) is raised, in order to compress the percussion spring (27), the safety element (16) is already acting, that is, it is already activated, as can be check in figures 6 and 8. In short, to make a shot it is always necessary for the user to voluntarily remove the insurance, placing it in the inactive position, as shown in figures 9 and 2.

According to a preferred embodiment, the rifle comprises a trigger

(14) of great sensitivity that is endowed with a double regulation. To do this, the trigger (14) has, in its lower part, a regulating screw (50), which by means of its tightening allows the trigger (14) to go back, therefore the coupling of the upper area with the locking element ( 13) is diminished, and therefore the trigger softens.

Once the shot has been made, the rifle has the end-of-stroke adjustment screw (59), which runs through the inside of the trigger spring, which through its tightening manages to reduce or reduce the trigger travel (14).

Likewise, the securing element (13) is arranged so that when the bolt (8) moves towards its loading position, the securing element (13) engages with the trigger (14).

The rifle comprises a firing pin (12) configured to impact the percussion needle (24) when the trigger (14) is pressed with the safety element

(16) in the position where it does not prevent the firing of the rifle, the firing pin (12) being pivotally attached to the bolt (8) so that it moves with the bolt (8) when the bolt (8) moves between the firing position and the loading position.

When the securing element (13) descends, it contacts or engages with the trigger (14). When the bolt (8) is lifted, the firing pin (12) contained in said bolt (8) is retained by the securing element (13), the rifle being left in an armed position, which is represented in Figure 9.

The firing pin (12) is located inside the bolt (8) and is configured to strike on the percussion needle (24), so that said percussion needle (24), in turn, strikes a fulminating capsule of ammunition producing its detonation.

The firing pin (12) is related to the locking element (13) so that it is retained by the locking element (13) when the bolt (8) moves from the loading position to the firing position, so that when the bolt (8) reaches the firing position, the firing pin (12) is armed to shoot towards the percussion needle (24).

Likewise, the monotiro rifle of the invention comprises a fire protection element (9), associated to the bolt (8) and configured to deflect sparks that go back at the moment of firing.

The bolt (8) is closed with the fire protection element (9), also called a security baffle, which consists of a piece of steel that is fastened to the bolt (8) by a screw (34). Inside, the bolt (8) has the firing pin

(12) which is configured to rotate with respect to a firing pin shaft (51) and be actuated by a main spring (28) as can be seen, for example, in Figure 2.

On some occasions, as a result of defects in ammunition,

or overlaps, the percussion needle (24) pierces the piston during firing, which produces a high pressure flow of fire towards the shooter through the conduit of the percussion needle itself, specifically towards his face and eyes, with the consequent risk of a serious accident that entails.

In order to increase the safety of the rifle, by eliminating the effect described in the previous paragraph, the rifle comprises a fire protection element (9), that is to say a safety deflector consisting of a piece of steel that is firmly fastened to the bolt (8), said fire protection element (9) being configured to act as a deflector of the fire flow produced during firing towards interior areas, with lower exhaust, of the housing (1) causing said bolt (8) lose pressure and thus avoid the accidents mentioned above.

According to a preferred embodiment of the invention, the fire protection element (9) comprises a deflection surface, configured to deflect sparks into the housing (1), preventing them from reaching the user's eyes. Preferably said deflection surface is configured so that, in the vertical plane through the barrel (6) when the rifle is in a position of conventional use, an angle of approximately 45 degrees with the longitudinal direction in which the cannon (6).

For this, as can be seen, for example, in Figures 2 and 9 for example, the fire protection element (9) comprises an inclined plane, preferably occupying an inclination of 45 ° when the rifle is in a position of shot, which is located in front of the conduit of the percussion needle (24), so that by this arrangement the sparks bounce and are directed just downwards, avoiding impacting on the face of the rifle user.

In view of this description and set of figures, the person skilled in the art will be able to understand that the embodiments of the invention that have been described can be combined in multiple ways within the scope of the invention. The invention has been described according to some preferred embodiments thereof, but it will be apparent to the person skilled in the art that multiple variations can be introduced in said preferred embodiments without exceeding the object defined in the appended claims.

Claims (18)

1.-Monotiro Rifle, which includes: a housing (1); a barrel (6) extending in a longitudinal direction and having a front end and a rear end, the barrel (6) being attached to the housing (1); a bolt (8) housing a percussion needle (24), the bolt being

(8)

located in correspondence with the rear end of the barrel (6);

in which the bolt (8) and the rear end of the barrel (6) are configured such that the bolt (8) can be coupled to the rear end of the barrel (6) by a sliding movement in a direction substantially perpendicular to the direction longitudinal, so that the bolt

(8)

it can be moved, by means of said sliding movement, between a loading position in which the rear end of the barrel (6) is released so that a user can insert a cartridge into a chamber of the barrel (6) through said rear end of the barrel (6), and a firing position in which said chamber is closed by said bolt (8), the barrel (6) and the bolt remaining

(8)

joined by at least one rib (61) entering at least one channel (81), so that said sliding movement is allowed and so that prevents the bolt (8) from moving backwards with respect to the rear end of the canyon (6); in which,

the barrel (6), in correspondence with the rear end is provided with a solid element (7) for fixing the barrel (6) to the housing (1), and which the barrel (6), in correspondence with its end rear, it comprises at least one shoulder (82), configured to abut by limiting the position of the solid element (7), said barrel (6) being configured to be introduced frontally into said solid element (7) 2. Monotiro rifle according to claim 1, wherein said at least one rib (61) comprises at least one rib (61) located at the rear end of the barrel (6), and wherein said at least a, channel (81) comprises at least one channel (81) located in the bolt (8) and configured to receive said at least one rib (61), such that with said at least one, rib (61) housed in said, at least one, channel (81) the bolt (8) is attached to the barrel (6) so that it cannot move backwards with respect to the barrel (6), but so that it can move in a substantially perpendicular direction to the barrel (6), by sliding said, at least one, rib (61) in said, at least one, channel (81). 3. Monotiro rifle according to claim 1 or 2, wherein said at least one nerve (61) comprises at least two ribs (61), and wherein said at least one channel (81) comprises the minus two channels (81). 4.-Monotiro rifle according to any of the preceding claims, wherein said, at least one, rib (61) extends around at least a part of the barrel circumference (6), in correspondence with the rear end of the barrel (6). 5.-Single-shot rifle according to any of the preceding claims, wherein the solid element (7) has holes for fixing between the barrel (6) and the housing (1) by means of screws (33) that are screwed into said holes. 6. Single-shot rifle according to any of the preceding claims, which additionally comprises a handrail (2) attached to the barrel (6) by means of a pin (21) screwed into the solid element (7) and which extends substantially in parallel with the barrel (6), the pin (21) having a substantially conical surface that is inserted into a clamp (22) in which the pin (21) is held by a screw (53). 7. Single-shot rifle according to any of the preceding claims, which additionally comprises at least one lever (10) pivotable about an axis (38), said lever (10) being coupled to the bolt (8) so that when the lever ( 10) pivots in a first direction, said lever (10) moves the bolt (8) towards the loading position, and when the lever (10) pivots in a second direction opposite to the first direction, the lever (10) moves the bolt (8) towards the firing position. 8. - Single-shot rifle according to claim 7, wherein said lever (10) is coupled to the bolt (8) by means of a connecting element (19) pivotally coupled to the bolt (8) and also pivotably coupled to the lever (10). 9. Single-shot rifle according to any of claims 7 and 8, wherein said lever (10) is associated with an extractor (17) configured for the extraction of sheaths, so that when said lever (10) pivots on said first direction, said lever (10) slides said extractor (17) backwards, so as to cause the removal of a sheath. 10. Monotiro rifle according to claim 9, wherein said lever (10) is associated to said extractor (17) by means of a pivotable arm (20) that meshes with the extractor (17) and is configured so as to follow the movement of the lever (10) for at least a part of the travel of the lever (10) between the loading position and the firing position of the bolt (8). 11. Single-shot rifle according to any of claims 9 and 10, wherein the extractor (17) is provided with a pin (18) pressed by a spring (56), said pin (18) being configured to slide in a slot in the barrel (6) for at least a part of the path of the extractor (17), and to engage with a sheath used for its extraction from the chamber. 12.-Monotiro rifle according to any of the preceding claims, which, furthermore, comprises a securing element (13) pushed by a securing spring (30) towards a position in which it engages with a trigger (14), as well as a safety element (16) movable between a position in which it prevents the firing of the rifle and another position in which it does not prevent the firing of the rifle , the safety element (16) being attracted towards the position in which it prevents the firing of the rifle by an insurance spring (26), the insurance element (16) and the securing element (13) being arranged so that when the bolt (8) moves towards the loading position, the locking element (13) pushed by the locking spring (30) moves allowing the locking element (16) to move to the position where it prevents firing of the rifle. 13. - Single-shot rifle according to claim 12, wherein the locking element (13) is arranged so that when the bolt (8) moves towards its loading position, the locking element (13) engages with the trigger ( 14). 14. Monotiro rifle according to claim 13, which additionally comprises a firing pin (12) configured to impact the percussion needle (24) when the trigger (14) is pressed with the safety element (16) in the position where it does not prevent the firing of the rifle, the firing pin (12) being pivotally attached to the bolt (8) so that travels with the bolt (8) when the bolt (8) moves between the firing position and the loading position. 15. Monotiro rifle according to claim 14, wherein the firing pin (12) is related to the locking element (13) so that it is retained by the locking element (13) when the bolt (8) moves from the position loading towards the firing position, so that when the bolt (8) reaches the firing position, the firing pin (12) is armed to fire towards the percussion needle (24). 16. Monotiro rifle according to any of the preceding claims, which additionally comprises a fire protection element (9), associated with the bolt (8) and configured to deflect sparks that go back at the time of firing. 17. Monotiro rifle according to claim 16, wherein said fire protection element (9) comprises a deflection surface, configured to deflect sparks into the housing (1), preventing them from reaching the eyes of the Username. 18. Monotiro rifle according to claim 17, said surface being of deviation configured so that it forms, in the vertical plane that it crosses the barrel (6) when the rifle is in a conventional use position, an angle of 10 approximately 45 degrees with the longitudinal direction in which the barrel (6) extends.