FI92760B - Cartridge feeder for feeding cartridges from a tubular magazine to a firearm's unpainted pipe - 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

92760

Cartridge feeder for feeding cartridges from a tubular magazine to a grooved barrel of a firearm. -Patronmataranordning för matning av patroner frän ett rörformat Magasin account ett eldvapens oräfflade Pipa.

In a firearm with a non-ribbed barrel, and whatever the operating system, it is necessary for the feed (play-tuning) devices to cause the passage of a new cartridge from the generally tubular magazine to the barrel cartridge housing with each shot fired.

If this pass occurs automatically after each shot fired, the weapon is called semi-automatic. If the passage after each shot is done manually through the movement of the tuning rod, the firearm is called manual or pumping.

In both cases, in order to reach the cartridge from the magazine to the barrel cartridge housing, a backward opening of the locking device has always been used in different ways to synchronize the movements of the lever (or levers) for stopping the cartridge in the magazine. to the drive beep ·· to take the wood.

Various feed systems are known which are suitable for the types of operation (semi-automatic or pumping type) with which a firearm is equipped and which generally comprise two levers .. for stopping a cartridge in a magazine designed to move with a firearm lock or even partially arranged immediately in said lock.

In all these cases, the separately mounted suitable parts provide a firearm in a more or less complex manner for the manual transfer of a cartridge from the magazine to the barrel or for the momentary locking of the cartridges for the transfer of a single cartridge to the barrel of a single cartridge.

These systems are very complex and expensive and are usually only used in firearms with pumping function.

Also known are simpler feeding systems with a single cartridge response lever developed using a semi-automatic firearm operating system, but which operate only with this operating system and do not allow manual transfer of the cartridge from the magazine to the cartridge housing of said firearm barrel unless very complex and fine mechanisms are used.

The object of the present invention is to overcome the limitations and complexity of hitherto known systems by providing a feeder suitable for firearms with different types of operation (semi-automatic, manual pumping and combined: semi-automatic / pumping) and able to select cartridge removal system and firearm in a simple and safe manner. without the need for a preventive manual setting.

The present invention achieves the above and other objects, as will be apparent from the following description, with a cartridge feeding device for feeding cartridges from a tubular magazine to a non-rifle barrel of a firearm having a housing, a lock sliding relative to the housing, a lifting sleeve acting on said lock, a trigger for the cartridge and the cartridge abutment lever, and which pat cartridge feeder is characterized in that the cartridge lowering lever is articulated to the housing and has a first arm directed towards said cartridge magazine, a cam and a unitary second arm directed away from the magazine, a spring is mounted in the housing and which spring normally tensions the cartridge lowering lever to a rest position in which the cam of said lever is raised, whereby the lever rotates when fired

II

3,92760 from its sleeping position by the impact tap that the cartridge response lever is hinged to the housing and has a cam that cooperates with the nose of the cartridge lowering lever so that the cartridge response lever retains the cartridge in the magazine while the cartridge lowering lever is idle and allows the cartridge to slide out of the cartridge that the lower and second stops are arranged on the lowering lever, that the spring and the straw functionally connect the trigger to the first lowering lever stop, that the cam surface operatively connects the lock to the second stop, that the spring and sleeve act on the first stop to turn the lowering lever out of said resting position after actuating the trigger, and to a second response to turn the lowering lever out of said sleep state after actuating said tuning rod.

The invention will become apparent from the following detailed description of a preferred embodiment thereof with the device according to this embodiment mounted on a weapon from which all normally operating parts have been omitted. This preferred embodiment is described below with reference to the accompanying drawings, in which:

Figure 1 shows a fragmentary section of a firearm ready for firing with: a lock in the closing station, a tuned percussion faucet, a charged tubular magazine and a feeder in the space to prevent the cartridges from leaving the magazine.

.. Figure 2 is a fragmentary cross-sectional view of the firearm in the same condition described above.

Fig. 3 is a fragmentary sectional view of the firearm when the cartridge is inserted into the barrel, with the lock still in the closed position, the percussion cock not tuned, the magazine] loaded and the feeding device already set for removal from the cartridge magazine.

4,92760

Figure 4 is a fragmentary cross-sectional view of the firearm in the same condition as illustrated in Figure 3.

Figure 5 is a fragmentary axial sectional view of the firearm in the phase following firing with the lock in the opening motion which tunes the percussion tap and the feeder that has allowed one cartridge to exit the magazine completely.

Figure 6 is a fragmentary cross-sectional view of the firearm in the same condition as illustrated in Figure 5.

Fig. 7 is a fragmentary axial sectional view of the firearm in the step following the previous step in which the lock that has terminated the reverse opening strike returns to the closing position, with the feed system lifting the cartridge removed from the magazine to enter the firearm cartridge while still in the magazine.

Figure 8 is a fragmentary cross-sectional view of the firearm in the same condition as illustrated in Figure 7.

Fig. 9 is a fragmentary axial sectional view of the firearm at an intermediate stage of operation with the feeder arranged to feed the cartridge from the magazine even when the percussion faucet is tuned (for impact) and the lock performs a backward opening movement after manual operation (pumping effect, unloaded or unloaded);

Figure 10 is a fragmentary sectional view of the firearm in the same condition as illustrated in Figure 9.

Fig. 5,92760, with reference to Fig. 1, the weapon shown intermittently comprises a housing 30, a magazine 16, a trigger protected by a cover 5 and an impact tap 18.

The feeding device according to the invention essentially comprises a cartridge lowering lever 1 articulated in a firearm to a bearing pin 2 and held in a rest position in its rest plane 3 against a support plane 4 made in the cover 5 by a spring 8 articulated to the bearing pin 7. The lowering lever 1 rests on its arm 8 on the strip 9 of the lowering lever 1 of the cartridge and provides a downward force thereto, to ensure contact between the above-mentioned planes 3 and 4.

In this position (see also Fig. 2) the outer part of the plane 11 of the cartridge abutment lever 12 rests on the plane 10 of the cartridge lowering lever 1 and is articulated in the firearm to the bearing pin 13 and suitably positioned so that in this position the front plane 14 of said abutment lever 12 prevents the cartridge 15 from leaving .

When the trigger 17 of the firearm is pulled (Fig. 3), the spring 19 guided in the sliding sleeve 20 pushes the percussion cock 18 and pivots around its bearing pin 2 until it imparts energy to the striker 21 sufficient to ignite the cartridge 22 in the barrel 22 of the weapon.

Simultaneously with this impact effect, the front plane 23 of the sliding sleeve 20 strikes the strip 24 of the cartridge lowering lever 1, causing the lowering lever to rotate clockwise until the level 25 of said cartridge lowering lever is adjacent to the plane 26 made in the cover 5.

This rotational movement (Figures 3 and 4) prevents the plane 10 of the cartridge lowering lever 1 from acting as a support for the plane 11 of the cartridge abutment lever 12. The cartridge abutment lever 12 is no longer on the cartridge lowering lever 1 and rotates around its joint 13 due to the return spring 27. until its plane 28 is on the side 29 of the lifting cup 30.

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

While the lock 31 begins its rearward opening stroke (Figure 5), thus pulling the cartridge sleeve 22 from the cartridge end of the firearm in the usual manner according to the function of the firearm (inertia closure, gas suction device, recoil cylinder, etc.), the cartridge 15 is already completely out of the magazine.

The cartridge 15 exiting the magazine tube 16 is forced (Figure 6) at the level 32 of the housing 33 to slide along the level 34 of the cartridge abutment lever 12. This movement causes the cartridge response lever 12 to turn counterclockwise on its bearing pin 13, thus compressing the return spring 27 until it returns to the state shown in Figure 2, i. at its front level 14 to a position that prevents the next cartridge 35 in the magazine from leaving the magazine 16.

As the lock 31 continues its rearward stroke (Fig. 5), the impact tap 18 is retuned and the spring 19 guided in its sliding sleeve 20 is repeatedly pressed into the tuning state.

The plane 23 of the sliding sleeve 20 no longer protrudes against the strip 24 of the cartridge lowering lever 1. Due to the impact of the arm 8 of the return spring 6, the lowering lever 1 rotates in the bearing pin 2 until it returns to its rest position determined by the resting plane 3 on the support level 4 of the cover 5.

In this state, the plane 10 of the cartridge lowering lever 1 already overlaps the plane 11 of the cartridge abutment lever 12. However, these planes are not (Fig. 6) in mutual contact, as in Fig. 2, because the cartridge 15 forces the cartridge ·; the plane 11 of the abutment lever 12 to be slightly separated from the plane 10 of the lowering lever 1 of the cartridge 11 7 92760.

That is, the cartridge 15 exiting the magazine tube 16 holding the front level 14 of the cartridge abutment lever 12 against the bottom of the next cartridge in the magazine <5 momentarily prevents the latter cartridge from exiting.

Therefore (see Fig. 5), as the lock 31 extends its rearward opening stroke, contact of the cartridge lowering lever 1 bundle 36 with the cam surface 37 of the lock 31, although causing clockwise rotation to bring said cartridge lowering lever briefly to the state shown in Fig. 3, does not leaving the cartridge 35 magazine.

After the end of the reverse opening stroke and the subsequent normal removal of the cartridge case which exploded in the barrel of the weapon, the lock 31 pushed by the spring 38 shown in Figure 1 while the firearm was in the closed position tends to return to the same closing position described above.

As soon as the direction of movement of the lock 31 is reversed, it, together with its stop tooth 39 articulated in the bearing pin 40 to the lifting cup 30 (Fig. 7), causes the cartridge 15 leaving the magazine 16 to be lifted in the same way as in known supply systems.

During this step (Fig. 8), the cartridge abutment lever 12 prevents the next cartridge in the magazine from exiting, even though the cartridge 15 is no longer flat 11, because the front plane 34 of said cartridge abutment lever 12 contacts the side 29 of the lifting cup i 30, which is moved to the raised position. inserting said cartridge 15 into the barrel of the weapon.

Thus, it is obvious (Fig. 7) that, as described above r ·· in the firearm opening step as the lock 31 extends the firing of the firearm, the close contact of the cartridge lowering lever 8 92760 1 with the front plane 41 of the lock 31, although it causes a clockwise rotation about the bearing pin 2 of said cartridge stepping lever until it is momentarily in the state according to Fig. 3, does not at this stage cause the next cartridge 35 to leave the magazine.

«·

As soon as the closing phase of the firearm is completed (see Fig. 3), all the feeding steps described above are repeated only by pulling the trigger 17 and this will be possible after a shot until the cartridges previously inserted into the magazine of the firearm have been used up.

Said pulling action of the trigger is valid even if the firearm has a semi-automatic operation (despite the inert gas intake or recirculation type) or a hand pump operation or a variable operation (semi-automatic and / or hand pump style operation).

If the feeder is part of a firearm with a manual pumping type or "changeable" function (where manual operation is also available), it is necessary for the cartridge to pass without pulling the trigger from the magazine tube into the barrel only by opening the firearm lock with its tuning rod.

In this state (Fig. 9), the lock 31 reaches a point where its cam surface 37 contacts the bundle 36 of the cartridge lowering lever 1, causing this lowering lever to rotate around its bearing pin until it has momentarily entered the state of Fig. 3.

This momentary state is maintained for the entire time required for the plane 42 of the lock 31 to slide relative to its rearward movement by the plane 43 of the cartridge lowering lever 1.

Fig. 9 92760 Such a short time (Figs. 9 and 10) is sufficient to prevent the extension of the plane of the cartridge 1 lowering lever 1 from acting as a support on the plane 11 of the cartridge abutment lever 12.

The cartridge counter lever 12, no longer resting on the cartridge lowering lever 1, rotates (Fig. 10) around its bearing pin 13 by the action of the return spring 27 until its flat surface 28 rests against the side 29 of the lifting cup 30. Because of this rotation, the front plane 14 of the cartridge abutment lever 12 no longer prevents the cartridge from exiting the inside of the magazine tube.

As soon as the cartridge has left the magazine, all the operating situations described above in the first mode of operation are repeated to completely return the lock 31 to the barrel after the insertion of said cartridge from the magazine tube into the barrel.

At present, it is possible to continue feeding the firearm from the magazine by opening and closing the lock by means of its tuning lever or by acting directly on the trigger of said firearm, in order to trigger the charge in the barrel.

In the first case, the cartridges will pass from the magazine to the barrel and the fire will be immediately removed. from the gun to the complete * emptying of the cartridges in the magazine. In the latter case, the cartridges will pass from the magazine into the barrel, become immediately ignited and explode in the barrel, and then removed from the firearm until the magazine is empty.

In this way, this new cartridge feeding system performs all its functions, regardless of the type of operation of the firearm for which it can be used.

However, there is an additional possibility of operation of this new cartridge feeder, limited to the first step of removing the cartridge from the magazine 10 92760 when it is not desired to affect the trigger of the firearm or its lock tuning lever.

referring to Figure 1 of the accompanying drawings, it can be seen that the cartridge lowering lever 1 is also provided with a bundle 44 projecting from the firearm, from the lower level 45 of the cover 5.

♦

If the user pushes the bundle 44 of the cartridge lowering lever 1 upwards, inwards from the plane 45 of the cover 5 with a finger acting on the trigger 17, a rotation of said cartridge lowering lever 1 is caused around its bearing pin 2 in the same way as by actuating the trigger and acting on said firearm tuning lever

Also in this case, it is thus possible to effect the removal of the cartridge from the magazine and thus to terminate the feed cycle, as described above.

Briefly, the operation of this new delivery system is as follows: A - In the case of use of a firearm with semi-automatic operation.

At the time of ignition (lock closed and cartridge in the barrel), the faucet spring, while giving the faucet the energy needed to strike, also causes the cartridge lowering lever to rotate vertically. This movement, shortly before the impact, releases the cartridge lowering lever from the cartridge response lever, which rotates clockwise under the action of its return spring, thus allowing one cartridge to be removed from the magazine tube.

Said cartridge positions itself in the lifting cup, presses against the rear of the cartridge abutment lever, causing it to rotate counterclockwise and thus preventing the next cartridge from being removed from the magazine.

li U 92760

The lifting cup, controlled by a lock, which at the time has ignited the rear firing of the firearm by pulling out and removing the sleeve in the barrel, automatically rises while said lock returns to the closed position, raising the cartridge to a position suitable for inserting it into the cartridge case.

#

Meanwhile, the tap spring, repeatedly pressed by the lock to the stop position, has left the cartridge lowering lever free to return it to its reclining position, thus reconnecting it to the cartridge response lever, which will thus eventually hold the cartridges in the magazine until the new cartridge is ignited.

B - In the case of use, a firearm with a manual pumping function

The same procedure described above for use in a semi-automatic firearm is repeated. Naturally, the unlocking is not automatic due to the effect of the shot, but becomes an event of manual action by the shooter via the movement of the tuning rod (pumping system).

If the tuning rod is repeatedly actuated without firing the cartridge in the barrel, thus excluding any movement of the tap spring, repetitive placement of the cartridge in the barrel can be obtained in the same way as hitherto known systems until the magazine is empty.

In this case, the new cartridge lowering lever performs its rotational movement, as described in A, by the action of a bundle fitted to it, which is acted upon by the lock during a backward opening movement obtained by means of a tuning rod (pumping system).

12 92760

Naturally, the shape of the lowering lever of the new cartridge is such that it guarantees the operation of the system both if the operation for its rotation is given by the tap spring and if said operation is given by a lock.

In any case, the two possibilities of use do not contradict each other and are in any case synchronized and harmonious without any need for adjustment *.

C - In the case of use, a firearm with an action that can be changed from semi-automatic to manual pumping.

Also in this case, the possibilities described in the previous sections "A" and "B" are repeated.

The cartridge feeder thus consists essentially of a new cartridge lowering lever which, together with the cartridge response lever, which may be integral therewith, simply and reliably chooses to remove cartridges from the magazine without the need for preventive adjustments and regardless of the firearm's operating system, it can be semi-automatic or a combined type (semi-automatic and / or manual pumping type), in which case all the movements of the new cartridge lowering lever are in any case synchronized and compatible with the operating system of the firearm to which it may be connected.

The invention can be applied to other embodiments other than those described above within its scope and essential technical features.

Therefore, the above devices should be considered as illuminating and not restrictive. All modifications falling within the scope of the appended claims are intended to be included in the invention.

• · *

Claims (6)

13 92760 A cartridge feeding device for feeding cartridges from a tubular magazine to a rifle barrel of a firearm, the firearm having a housing (33), a lock (31) sliding relative to the housing, a tuning rod acting on said lock, an impact tap (18) and a trigger (17) including a lifting cup (30) for a cartridge (15) and a cartridge abutment lever (12), characterized in that the cartridge lowering lever (1) is articulated to the housing (33) and has a first arm directed towards said cartridge magazine, a cam and a unitary second arm which is directed away from the magazine that the spring (6) is mounted in the housing (33) and which spring normally tensions the cartridge lowering lever (1) to a rest position with the cam of said lever raised, the lever turning when fired from its rest position by the impact tap (18); 12) is articulated to the housing (33) and has a cam which cooperates with the cam of the cartridge lowering lever (1) so that the cartridge The response lever (12) retains the cartridge (35) in the magazine while the cartridge lowering lever (1) is at rest and allows the cartridge (15) to slide out of the magazine when the cartridge lowering lever (1) pivots out of its rest position. ) and a second (36) response that the spring (19) and the straw (20) operatively connect the trigger (17) to the first stop (24) of the lowering lever (1), that the cam surface (37) operatively connects the lock (31) to the second stop (36) that the spring (19) and the sleeve (20) act on the first stop (24) to turn the lowering lever (1) out of said rest position after actuating the trigger (17), and that the cam surface (37) acts on the second stop (36) of the lowering lever (1) to turn away from said sleep state after acting on said excitation rod. Cartridge feeding device according to claim 1, characterized in that the lowering lever (1) comprises a third stop (44) 14 92760, which stop is outside the housing (33) and which third stop is manually operable to turn the lowering lever (1) out of its rest without affecting the trigger (17) or to said tuning rod. A cartridge feeding device according to claim 2, characterized in that the third stop (44) is arranged on said second arm of the lowering lever (1). . A cartridge feeding device according to claim 1, characterized in that the first stop (24) is arranged on said second arm of the lowering lever (1), and the second stop (36) is arranged on said first arm of the lowering lever (1). A cartridge feeding device according to claim 1, characterized in that the spring (19) is activated by a trigger (17) and acts on said first control member and the impact tap (18) of the lowering lever (1). Cartridge feeding device according to Claim 1, characterized in that the cam surface (37) is provided with a lock (31). li 15 92760