PT86962B - CARTRIDGE FEEDING ASSEMBLY FOR ALMA LISA SHOTS WITH SEMIAUTOMATIC OR PUMP OPERATION - Google Patents

Abstract

The present invention relates to smooth-bore guns having a tubular magazine and an operating system either semiautomatic indifferently of the inertial type, of the gas intake type or of the recoiling barrel type, or manual pump-­operated or convertible from one system to the other, relating essentially to a new cartridge feed system adapted to these types of firearms. The invention comprises a new cartridge descent lever (1) which causes the cartridges (15) to pass from the magazine tube (16) into the barrel (22), either automatically or manually. For the feeding with semiautomatic operation of the firearm, part of the energy of the spring of the hammer (18) of the firearm is used to cause the vertical rotation of the cartridge descent lever (1) so that a cartridge (15) exits from the magazine tube (16). For the feeding with manual pump operation of the firearm, the same movement is caused by the bolt (31) when it opens manually, by means of the cocking rod, for the expulsion of the case in the barrel (22). Finally, for the manual change of the cartridge (15) in the barrel (22) the same movement can be caused by the hand of the shooter which, with the finger which presses the trigger (17), finds, in an easily accessible position, a tab (44) of the cartridge descent lever (1) protruding from the lower level of the body of the firearm. In all the cases described above, the successive passage in the barrel (22) of the cartridge (15), exiting from the magazine tube (16), occurs in a conventional manner for the type of firearm considered. In the various operating systems all the movements of the new cartridge descent lever (1) are in any case synchronized and compatible with the used operation without the need for adjustments.

Description

CARTRIDGE SUPPLEMENT SET FOR

ALMA LISA CO.V SHOTS SEMIAUTOMATIC OR BY BAG

DESCRIPTION

A smooth-bore shotgun, whatever its operating system, necessarily has feeding sets (rearm), for example to cause, after each shot fired, the passage of a new magazine cartridge, usually in a tubular, for the barrel cartridge chamber.

If this passage occurs automatically in each shot fired, the shotgun will be called a semi-automatic shotgun; if the passage occurs, after the shot is fired, manually., through the movement of the frame bar, the shotgun will be a hand-operated shotgun or a pump.

In order to achieve, in any case, the passage from the charger hook to the cartridge chamber in the barrel, the backward opening stroke of the bolt assembly has always been used in several ways to synchronize the lever movements ( or levers), to hold the cartridge in the magazine, for the output of a single cartridge at a time, with those of an elevator cup in which the said cartridge is placed, when leaving the magazine, to be raised to a position suitable for the introduction into the barrel,

ORIGINAL BAD ^

Various feeding systems are known, suitable for the type of operation (semi-automatic or manual) that the firearm is equipped with, generally comprising two levers to hold the cartridge in the magazine and with an appropriate configuration to be moved by the bolt of the firearm, or even partially arranged directly on said bolt.

In all these cases, appropriate buttons, mounted separately, prepare the firearm, in a more or less complicated way, for the manual passage of the cartridge to the barrel from the magazine or for the momentary blocking of the cartridges in the magazine to replace what's in the pipe _c

These systems are extremely complex and expensive and are generally u ^ ed only on firearms with pump operation by _the

Simpler feeding systems are also known, with a single cartridge retaining lever, developed with the appearance of the semi-automatic system of air but fire, but in most cases, they are only capable of operating with this system of operation and do not allow manual passage of the cartridge from the magazine to the chamber of the cartridge of the said firearm, unless highly complicated and delicate mechanisms are used.

object of the present invention is to overcome these limitations and the complexity of the systems hitherto known, providing a new supply set for shotguns with different types of operation (semi-automatic, manual pump and combined: semi-automatic / pump) and capable to select, in a simple and safe way, the cartridge output from the magazine, regardless of the firearm's operating system without the need for preventive manual pre-adjustment.

ORIGINAL BAD

-3The present invention achieves the aforementioned objectives and others, as will be evidenced in the following description, by means of a cartridge feeding set for supplying cartridges from a tubular magazine into the barrel of a smooth-bore shotgun that it has a box, a sliding tool relative to the box, a cartouche lift cup, a dog and a trigger, comprising the power supply, in addition;

a) a cartridge lowering lever rotating in the box and having a first arm directed towards the cartridge magazine and with a nose, and a second integrated arm directed in the opposite direction to the magazine;

b) a spring mounted on the box and which normally polarizes the lowering lever of the cartridge to a resting position in which its nose is raised, the lever being tilted away from the resting position by the dog, during firing;

c) a cartridge holding lever rotating about an axis in the box and having a nose that collaborates with the nose of the cartridge lowering lever so that the cartridge holding lever retains a cartridge in the magazine while the lowering lever the cartridge is in its rest position and allows the cartridge to slide out of the magazine when the cartridge lower lever swings from its rest position.

The present invention will be more clearly understood from the following detailed description of its embodiment, such as it is installed in a shotgun, of which all parts that work in a conventional manner are omitted. The preferred embodiment will be described with reference to the accompanying drawings, the figures of which represent:

ORIGINAL BAD

for firing and having * the bolt in the closed position, the armed dog, the loaded tubular magazine and the feeding set in a condition to prevent the magazine from leaving the magazine;

Fig. 2, a partial cross-section of the firearm in the same conditions as described above;

Fig. 3, a partial axial cross-section of the firearm during the percussion of the cartridge in the barrel, with the bolt still in the closed position, the non-armed dog, the loaded tubular loader and the pre-adjusted feeding set for the outlet of a magazine cartridge;

Fig. 4, a partial cross-sectional view of the firearm in the same conditions as described in fig. 3;

Fig. 5 »an axial cross-sectional view of the firearm at a stage subsequent to the percussion of the cartridge in the barrel with the cork in opening movement, which is arming the dog and the feeding set that allowed the complete exit of a single cartridge the charger;

Fig. 6, a partial cross-sectional view of the firearm in the same conditions as described in fig. 5;

Fig. 7, a partial axial cross-sectional view of the firearm in the phase subsequent to the previous one, with the bolt which, having completed the opening walk backwards, is returning to the closed position; the feeding system lifts the cartouche that left the magazine for insertion into the firearm cartridge chamber, while retaining the cartridges still contained in the magazine;

Fig. 8, a partial cross-sectional view of the firearm in the same conditions as described in fig. 7;

liAD ORIGINAL

........

-5A fig. 9, a partial axial cross-sectional view of the firearm in an intermediate phase of its operation, in which the feeding set is arranged to supply a magazine cartridge even when the dog has not yet been disarmed (for percussion) and the bolt performs its opening movement backwards after a manual actuation by the user (actuation condition of the pump type, weapon discharge or cartridge change in the barrel); and

Fig. 10 is a partial sectional view of the firearm in the same conditions described for Figure 9.

With reference to fig. 1, a shotgun that is partially illustrated comprises a box (33), a magazine (16), a trigger (17) protected by a guard (5) and a dog (18).

feeding set according to the present invention with substantially comprises a cartridge lowering lever (1), rotating in relation to the firearm on an axis (2) and held in the rest position, with its abutment plane (3 ) against the waiting plane (4-) provided in the guard (5), by a lowering lever (1) rotating about an axis (7). The lowering lever (1) rests with its rod (8) on an appendix (9) of the lowering lever of the hook (1) and exerts a downward force on the appendix to ensure contact between said planes (3) and (4-).

In this position (see also fig. 2) the outer part of the flat face (11) of the cartridge retaining lever (12) rests on the flat face (10) of the cartridge lowering lever (1) and rotates on the firearm. fire around the axis (13) and is conveniently pre-adjusted in such a way that, in this position, the front plane (14) of the said cartridge retaining lever (12) prevents the cartridge (15) from leaving the interior of the charger tube (16).

When you pull the trigger (17) on the gun (fig. 3), a dog (18)

ORIGINAL BAD

it is pushed by a spring (19) guided in the slide bushing (2q), and rotates around its axis (2) until it has transmitted enough energy to the striker (21) to cause the cartridge to burst in the pipe (22).

Simultaneously with this impact action, the front plane (23) of the slide bushing (20) hits an appendix (24) of the cartridge lowering lever (1) causing the latter to rotate clockwise until the plane (25) of said lowering lever of the cartridge abuts the plane (26) provided in the guard (5).

This rotational movement (fig. 3 and 4) prevents the flat face (10) of the cartridge lowering lever (1) from acting as a stop for the flat face (11) of the cartridge retaining lever (12). The cartridge retaining lever (12) no longer rests on the cartridge lowering lever (1) and rotates around its fulcrum (13), as a result of the replacement spring (27), until its face flat (28) resting on the face (29) of the lift bowl (30).

As a result of this rotation (fig. 4), the front plane (14) of the cartridge retaining lever (12) no longer prevents the cartridge (15) from sliding out of the magazine tube (16).

While the bolt (31) starts its opening ride backwards (fig. 5), thus pulling the cartridge housing (22) from the cartridge chamber in the gun barrel in a conventional manner regarding the type of operation of the cartridge. firearm (coasting, gas inlet, recoil pipe, etc.) the tappet (15) is already completely out of the magazine tube.

cartridge (15) that leaves the loading tube (16) is forced (fig. 6) by the plane (32) of the box (33) to slide along

ORIGINAL BAD

J

plane (34-) of the cartridge retaining lever (12). This movement causes the cartridge retaining lever (12) to rotate counterclockwise around its axis (13), thus compressing the replacement spring (27) again until it returns to the position of fig . 2, that is, with its plane (14) in a position that prevents the second cartridge (35) in the magazine from opening the magazine (16).

While the bolt (31) continues to move backwards (fig. 5), the dog (18) is rearmed and its spring (19), guided on the slide bushing (20), is again compressed to a rear position .

plane (23) of the slide bushing (2o) stops pushing the appendix (24) of the cartridge lowering lever (1). As a result of the thrust of the rod (8) of the return spring (6), the lowering lever (1) rotates on the shaft (2) until it returns to its resting position determined by the stop plane (3) in the holding plane ( 4) the guard (5).

In this condition, the flat surface (1C) of the cartridge lowering lever (1) already overlaps the flat surface (11) of the cartridge holding lever (12). However, these flat surfaces are not (fig. 6) in mutual contact as in fig. 2, you see that the cartridge (15) forces the flat surface (11) of the cartridge retaining lever (12) to remain half open from the flat surface (1C) of the cartridge lowering lever (1).

In other words, it is the cartridge (15) that leaves the tube of the magazine (16) which, keeping the front plane (14 ·) of the cartridge retaining lever (12) against the bottom of the second cartridge (35) in the magazine, momentarily prevents it from leaving.

Therefore (see fig. 5), while the bolt (31)

ORIGINAL BAD ^!

-8- Λ continues ο its backward opening movement, the contact with the appendix (36) of the cartridge lowering lever (1) with the flesh surface (37) of the bolt (31), although it causes a rotation in the direction of the clockwise around the axis (2) of said lever (1) for lowering the cartridge to take it for a short time to the position of fig. 3, does not, at this stage, cause the second cartridge (35) to leave the magazine.

After completing the backward opening stroke, and the consequent conventional expulsion of the cartridge shell that exploded in the barrel, the bolt (31), pushed by the visible spring (38). in fig. 1 when the firearm was in the closed position, it tends to return to the same closed position described above.

As soon as it reverses its movement, the bolt (31), together with the waiting tooth (39) of the bolt turned to the elevator bowl (30) around the axis (40), causes (fig. 7) similar to that seen in the known feeding systems, the lifting of the cartridge (15) out of the magazine (16).

During this phase (fig. 8), the cartridge retaining lever (12) prevents the second cartridge from leaving the magazine, even when the cartridge does not already rest on its flat face (11), since the front plane (3 ^) of said cartridge retaining lever (12) makes contact with the side (29) of the lifting cup (30) which is moved to an elevated position, such that it allows the introduction of said cartridge (15) to the barrel.

It is thus evident (fig. 7) that, in a manner similar to that described above for the opening phase of the firearm, as the bolt (31) continues its course (forward) of closing the weapon , the imminent contact of the appendix (36) of the de ^ s lever

ORIGINAL BAD _Q.

of the cartridge (1) with the front plane (41) of the bolt (31), although it causes a clockwise rotation around the axis (2) of said lever (1) of lowering the hook until momentarily under the conditions of fig. 3, does not cause, even at this stage, the exit of the second cartridge (32) from the gun.

Once the closing phase of the firearm has been completed (see fig. 3) with the introduction of a new cartridge in the barrel, all the feeding phases described above will be repeated by simply pulling the trigger (17), and this will be possible , in successive shots, until the cartridges previously inserted into the firing tube of the firearm are exhausted.

Said action of pulling the trigger is valid if the firearm has semi-automatic operation (regardless of whether it is inertia type, gas inlet or recoil pipe), or if it has manual operation of the pump type or a convertible operation (semi-automatic and / or manual pump).

£ and the supply set is part of a firearm with manual pump operation or with convertible operation (in which manual operation is also available), the cartridge must pass, without pulling the trigger, from the warehouse tube into the barrel, simply by opening the gun's bolt through its frame bar.

In this condition (fig. 9), the bolt (31) reaches the point where its meat surface (37) makes contact with the appendix (36) of the lowering lever (1) of the cartridge, causing us to rotate around of the axis (2) until it is brought momentarily to the conditions of fig. 3.

This momentary condition will be maintained throughout the ORIGINAL temBAD

J

cho.

This short period of time (fig. 9-10) is sufficient to prevent the flat surface (10) of the lowering lever (1) of the cartridge from continuing to function as a support for the flat surface (11) with the lever (12) of cartridge retention.

The cartridge retaining lever (12), no longer resting on the cartridge lowering lever (1), rotates (fig. 10) around its axis (15) as a result of the action of the replacement spring (27) until its flat face (28) resting on the side (29) of the lift bowl (50). Due to this rotation, the front plane (14-) of the cartridge retaining lever (12) stops preventing the cartridge from leaving the interior of the magazine tube.

As soon as the cartridge has left the magazine, all the operating conditions described above are repeated in the first operating mode, until the complete return of the bolt (31) to the closed position after insertion into the barrel of the said tappet that comes from the charger tube.

At this point it is possible to continue feeding the firearm from the tube of the magazine, opening and closing the manual.

mind the bolt through gives your bar in frame or acting di- straight on the trigger of the ref e laugh weapon ^ 4. tz fire, to fire 0 shot of cartridge that is at the pipe. In the first case, the cartridges will pass the charger Pan-

into the barrel and will be expelled immediately from the firearm until the cartridges are completely depleted in the magazine; in the latter case, the cartridges will pass from the magazine to the barrel,

ORIGINAL BAD 1 *

L_

immediately fired and explode in the barrel and then expelled from the firearm until the magazine is empty.

The new cartridge feeding system thus performs all its functions regardless of the type of operation of the firearm to which it is applied.

There is, however, another possibility of action of the new cartridge feeding system, limited to the first phase of the exit of the cartridge from the magazine, when neither the trigger of the firearm nor the bar of the bolt is desired.

With reference to fig. 1 of the accompanying drawings, it can be seen that the lever (1) for lowering the cartridge is also provided with a projection (44) that protrudes externally in relation to the weapon, from the lower plane (45) of the guard (5) .

If, with the finger acting on the trigger (17), the user pulls the projection (44) of the cartridge lowering lever (1), upwards, in the plane (45) of the guard (5), a rotation of said lever (1) for lowering the cartridge, about its axis (2), in a manner similar to that which occurs either by acting on the trigger or by acting on the frame bar of said fire gun, as shown above described himself in detail.

In this case too, it is possible to cause a cartridge to come out of the tube of the magazine and thus complete the feeding cycle as described above.

In summary, the operation of the new feeding system is as follows:

A) IN THE EVENT OF APPLICATION TO A WORKING FIREARMS

SEMI-AUTOMATIC MENT

At the instant of firing (closed bolt and cartridge in the case), the dog's spring, while providing the dog with the necessary energy bad original

-12for percussion, it also causes the vertical lowering of the cartridge lowering lever. This movement detaches, just before the impact, the cartridge lowering lever from the cartridge retaining lever, which, due to its replacement spring, rotates clockwise, thus allowing a cartridge to exit the charger tube.

said cartridge, positioning itself in the elevator bowl, presses against the rear of the hook retaining lever by turning it counterclockwise and thus preventing a second cartridge from leaving the loader.

The lifting cup, controlled by the bolt, which has completed, as a result of the firing, the opening course behind the firearm by extracting and expelling the casing from the casket? tucho, rises automatically, while the bolt returns to a closed position, raising the cartridge to an appropriate position for insertion into the chamber.

The dog spring, meanwhile, once again compressed by the tool in the resting position, released the lowering lever of the hook to return to its resting position, thus applying it again to the retaining lever of the cartridge that thus Finally, it will retain the cartridges in the magazine until a new shot is fired.

B) IN THE EVENT OF APPLICATION TO A FIRE ASTHMA WITH OPERATION BY ΒΟΜΒΑ MANUAL

The same operating scheme described above is repeated in the case of application to a firearm with semi-automatic operation; naturally, the bolt opening movement will not be automatic, as a consequence of the shot being fired, verifying

ORIGINAL BAD

-15 if yes by manual action of the sniper through the movement of the frame bar (pump system).

If you repeatedly act on the frame bar without removing the cartridge in the barrel, thus excluding any spring movement of the dog, you can obtain, in a manner analogous to what has so far been obtained with known systems, repeated replacement. the cartridge in the barrel until the tank is empty.

The new lowering lever of the cartridge, in this case, performs its rotation movement, as described in A), due to its adapted appendage, in which the bolt acts during the backward movement with the opening obtained through the bar frame (pump system).

Naturally, the configuration of the new lowering lever of the cartridge is such that it ensures the functioning of the system both in the case of action for its rotation to be caused by the spring of the dog, or in the case of action by the bolt.

In either case, the two possibilities of action do not interfere with each other and are in any case synchronized and compatible, without the need for adjustments.

C) IN THE EVENT OF APPLICATION IN A FIREARMS WITH CONVERTIBLE OPERATION FROM SEMI-AUTOMATIC TO MANUAL BY PUMP

In this case too, the operating possibilities described in A) and B) are repeated.

An essential feeding set is therefore provided, consisting of a new cartridge lowering lever which, together with a cartridge retaining lever that can be integrated in it, selects in a simple and seBAD ORIGINAL way

-14 width the output of the magazine's cartridges without the need for preventive adjustments and regardless of the firearm's operating system, be it semi-automatic, manual type by pump or combined (semi-automatic and / or manual for good ba ), with all the movements of the new cartridge lowering lever in either case synchronized and being compatible with the firearm operating system to which it is applied.

The present invention can be carried out in other ways than described, within the scope and essential technical characteristics of the invention itself. Therefore, the foregoing provisions should be considered as illustrative and not limiting, and all modifications that are covered by the appended claims should be included in the scope of the present invention.

Claims (2)

Claims 1.- Cartridge feeding set to distribute the latter from a tubular magazine to the barrel of a smooth-bore firearm, having a chamber, a slide bolt relative to the chamber, a lift bowl for the cartridge, a dog and a trigger, characterized by also comprising: a) a cartridge lowering lever articulated in the chamber and having a first arm directed towards the cartridge loader and having a nose, and a second integrated arm directed in the opposite direction to that of the cartridge; b) a spring mounted on the chamber and normally pre-tensioning the lowering lever of the cartridge tending to take it to a resting position in which the nose is raised, the lever being tilted, moving away from the resting position by the dog, during shooting; c) a cartridge hold lever hinged in the chamber and having a nose that cooperates with the nose of the cartridge lower lever so that the cartridge hold lever holds a cartridge in the magazine while the cartridge lower lever is in position rest and allows the cartridge to slide out of the magazine when the cartridge lower lever swings from its rest position. 2.- Cartridge feeding set according to claim 1, characterized in that the cartridge's drop lever is swung away from the rest position by the action of a frame bar,