DE1703206A1 - Closure for use when firing sub-caliber practice cartridges from recoilless weapons - Google Patents

Description

Försvarets Fabriksverk, Eskilstuna / Sohweden

Breech for use when firing sub-caliber Practice cartridges for recoilless weapons>

The invention relates to a closure for use in Training of soldiers in firing recoilless weapons with side trigger.

The object of the invention is to simulate the puncture the recoilless weapon when firing a full-caliber Pa = troneo

When training soldiers in firing recoilless Weapons are generally used for a special purpose, which is inserted into the barrel of the recoil-free weapon and contains a sub-caliber barrel »In the insert there is an easily removable lock, which is connected to a device

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for holding the sub-caliber practice ammunition and with a Facility for »firing this ammunition is provided. Such a closure is given for example in the Swedish patent specification 199.475. In such closures, the Firing device at least one firing pin »a hammer and a safety device»

The invention relates to a breech block that has a cartridge chamber for has an auxiliary cartridge that is suitable for the firing pin up to hit the sub-caliber cartridge and thereby replace the tap. According to the invention, a flame opening leads backwards from the cartridge chamber for the auxiliary cartridge, through which a backward-facing flame is passed, so that the function of the recoil-free weapon when firing full-caliber ammunition is simulated «

An exemplary embodiment of the closure is illustrated below of the drawings described in detail. In this shows:

Flg. 1 in longitudinal section a closure according to the invention,

2 shows the closure in a cross section along the line II-II in Fig. 1,

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Pig. 3 shows a section through one for receiving a cartridge in FIG a recoilless weapon specific use, the one Has barrel for a sub-caliber cartridge and is used together with a closure according to the invention,

Pig, 4 a section along the line IV-IV in Pig. 3 towards seen the arrows.

Pig, 5 is a rear view of the in Pig. 3 arrangement shown with the Lock in the secured and unsecured state,

Pig. 6 in a rear view the closure with two different positions of a pivotable side part of the closure and

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7 in a longitudinal section through the upper half of the closure This is a safety device in the inoperative state.

The lock 1 shown in the drawings is provided at its front end with a flap 2, which forms part of a bayonet lock (PIg ₀ 4) and for pesting the damage.

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Conclusion In a special insert 32 is used. This is based on 3 and 4 described. The insert 32 can be in from behind a recoilless weapon can be introduced. The splash 2 owns a socket 3 for receiving a subcallbrigen exercise cartridge. Behind the socket 3 there is a longitudinal bore 4 for one Firing pin 5, which is held by a helical spring 6 in an ineffective "rear position" in which it hits a stop attacked The firing pin 5 is provided at its rear end with a puddle 8 «in an enlarged part 4a of the Hole 4 is seated. This extended part has a larger axial one Length than the flange 8. The movement of the firing pin 5 therefore affects the distance between the flange 8 and the annular surface 9 limited between the bore 4 and the enlarged part 4a. The closure has a laterally open cartridge chamber 10 in the form a cylindrical transverse bore »whose center line lies in the same plane as the center line of bore 4, but in the right Angle to the center line of the bore 4 is arranged. The cartridge chamber 10 is used to receive an auxiliary cartridge, not shown, the jacket of which is made of a flexible plastic and on the rear end face of the flange 8 of the sole plate 5 engages. Behind the chamber 10, the breech has a Bore 11, which is in communication with the cartridge chamber 10 and forms a rearward-facing opening of the cartridge chamber 10 «

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The bore 11 is coaxial with the bore 4. The lateral opening of the cartridge chamber 10 is covered by a side part 1a, which consists of several elements which are held together. The outermost element IS of the side part 1a has the shape of a cap which partially covers the other elements and whose outer surface 13 is adapted to the cylindrical inner wall of the recess of the insert 32, FIG. 3, which is used to receive the closure. The side part la can be pivoted about an axis IV · When the closure is removed from the insert 32, the rare part la can be opened up so that the side opening of the cartridge chamber 10 is exposed and the replacement of the auxiliary cartridge inserted in the cartridge chamber IO is made easier the cap 12 is a second firing pin 16, the tip of which is located just in the middle of the chamber 10. The second firing pin 16 Jk serves to ignite the aid cartridge located in the chamber 10. The cap 12, together with the firing pin 1β, can be displaced inwardly against the force of a helical spring 17 surrounding the firing pin 16. During this shift, the cap 12 is guided in parallel with two PUhrungsstlften 18, which are fastened in an inner element of the pivoting side part la and slots 19, 20 freely penetrate in the side parts of the cap 12 of the inner element are pressed in and through

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Your own elasticity will be recorded.

The lock can be rotated between a locked and an unsecured position. To the unsecured position » the In Flg. 5 Shown in solid lines is the Cap 12 under a blast capsule 30 'which is actuated by a laterally arranged trigger device of the rilokstossfrelen weapon will. The cap 12 is pushed inward by the gas pressure, the is actuated by the detonator 30. If, on the other hand, the closure is indicated by dash-dotted lines in FIG recoilless weapon, the cap 12 is not moved and therefore the The exercise cartridge located in the chamber 10 has not been ignited will.

When the closure is removed from the insert 32 »must he must be secured against being fired. For this purpose, the cap 12 must be prevented from being pushed inward. A securing member is formed by an inner element 21 of the pivotable side part la. The element 21 is in the longitudinal direction of the Slidable lock. When the closure is removed from the insert, the element is secured by a helical spring 22 in the

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in Pig. 1 held, in which two projections 23, 2 * 1 two corresponding YorsprÜnge 25 * 26 of the cap are opposite, so that the cap 12 and the firing pin 16 can not be inwardly displaced. When the closure is inserted into the insert 32, a projection 27 belonging to the element 21 engages on a part J1 (Pig «7) of the insert J2. The element 21 is therefore pushed back against the action of the peder 22 into a position in which the projections 23, 24 from the in Pig. Move position 1 shown to the right into the position shown in FIG. 7 * In this position, the fuse is ineffective because the lead "2J $ 24 no longer correspond to the projections 25 # 26.

With the closure removed from the insert 52 and into the in Pig. 6 upward pivoted side part la of the closure the chamber 10 is open and freely accessible »In this A cartridge can be inserted into the chamber 10 in the position will. Thereafter, the side part la can be converted into the one shown in FIGS. 1 and 2 The position shown can be folded down. In this position, the cap 12 can not be pushed inward and in the bore cartridge cannot be ignited. A sub-caliber cartridge is then inserted into the fitting 3. The closure is then inserted into the insert 32, pushed in and into a

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fixed position rotated «so that the fuse in the above described manner is rendered ineffective. Before the weapon is fired, the slide is turned further to the position in which the cap 12 is under the blast capsule 30 »the one in the Insert 32 is arranged. This position is shown in Fig. 5 with solid lines. If the detonator 30 is ignited by actuating the trigger device of the recoilless weapon, a gas pressure is generated which is sufficient to remove the cap 12 to push inward quickly and thereby the firing pin 16 against to press the primer of the auxiliary cartridge located in the chamber 10, whose charge now consists of gunpowder is ignited. Due to the gas pressure generated in the cartridge chamber 10, the flexible jacket of the auxiliary cartridge is inserted into the mouths the holes 4 and 11 widened. Now the firing pin becomes 5 * whose rear end face engages the auxiliary cartridge in the chamber 10, pushed forward so that the left part of the The firing pin strikes the primer of the sub-caliber cartridge, which is located in the socket 3. Immidiatly after the jacket of the auxiliary cartridge located in the chamber 10 is at the mouth of the bore 11 in the chamber broken through, whereupon the gases generated by the gunpowder are blown through the bore 11 to the rear. The thereby The generated bang is much stronger than the bang that is generated when the sub-caliber cartridge that sits in the socket 3 is fired. In addition, a flame lets out to the rear.

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After firing, the breech can be removed from the insert 32. The empty sub-caliber cartridge "which is attached to the socket 2, and the rest of the plastic" shell of the cartridge in the bore 10 are then removed. Once the cartridges are replaced by new ones, the closure can be reinserted into the insert 32, after which the weapon again Ubungs- W can be used.

You only need the practice weapon for blank cartridge shooting to load the auxiliary cartridge that is inserted into the chamber 10. The invention is not restricted to the exemplary embodiment described, since other embodiments are also conceivable within the scope of the inventive concept.

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Claims (6)

-10- no-fö-12 PATENT CLAIMS (ll Closure for firing a lower-caliber training cartridge which is inserted into the barrel of a recoil-free weapon, characterized in that "the breech (1) is provided with a rearward-facing opening (11)" which is connected to a cartridge chamber (10) "That can hold a bilf cartridge" which is used to actuate a firing pin (5) to ignite the "sub-caliber cartridge attached to the breech and to expel a rear-facing flame through the rear-facing opening at the same time as the lower-caliber cartridge is fired. 2) Closure according to claim 1 »daduroh characterized» that the cartridge chamber for receiving the auxiliary «cartridge furthermore with a forward opening (4) in connection stands »in which the firing pin (5) is slidable» the engages with a widened rear part (8) on the lateral surface of the auxiliary cartridge and duroh the itself when it is fired The bulging jacket of the auxiliary cartridge is moved »so that the tip of the firing pin (5) releases the ignition cap of the sub-caliber cartridge. 109883/0026 «11- no-fö-12 3) Closure according to claim 2 «characterized« that a lateral opening of the cartridge chamber (10) for the auxiliary cartridge is covered by a rare part (la) "which has a cap" which is moved inwardly towards the cartridge chamber (10) against the action of a helical spring (17) can be «causing an auxiliary lag bolt (16) to» ignite a primer of the auxiliary cartridge is actuated. k) Closure according to claim 3, characterized in that the cap (12) is actuated by combustion gas, which can be operated by a detonator (30) which is inserted into a special insert (32) which in turn is in the barrel of the recoil-free weapon is inserted "and the closure (1) is in the use of a secured position" in which the cap (12) is to the side of the pop cap (30) "can be rotated into a position" in which the cap (12) of the pop capsule ( 30) is opposite and is pushed inwards by combustion gases "which can come from the detonator". 5) Closure according to claim 3 or 4 «characterized« that under the cap (12) a longitudinally displaceable safety element (21) is switched on «the 109883/0026 no-fö-12 has one or more projections (23, 24) that allow inward displacement of the cap (12) in a first longitudinal position of the Prevent security element (21) and allow the security element (21) from its first to its second longitudinal position in a second longitudinal position of the security element to move against the action of a spring (22) "when a projection (31) of the insert (32)" into which the lock is inserted "on a projection (27) of the security element (21) attacks and the projections (27 * 31) to carry out this Shift automatically interact with each other when the closure (1) is inserted into the insert (32). 6) Closure according to one of claims 3 to 5 »characterized« that the side part (la) consists of a In the closed position, in which he bottom-leases the side opening of the cartridge storage (10) for the auxiliary cartridge, into an open position Movable position in which the opening is exposed. Blank page