DE2530705A1 - Ejector for stuck spent cartridge - allows rearward ejection in case of misfire as consequence of projection engaging in groove - Google Patents

Abstract

The spent cartridge ejector is operative when the cartridge sticks in the barrel comprises a projection (11a) which engages in a groove in a cartridge case (mounting 1a) which is expelled from the barrel with the shell by the propellant gases. The ejector (11) is mounted radially pivotably in a recess in the breech head (5), and includes an extension (11c) which is directed radially towards the bevelled tip of the firing pin (7). When the firing pin moves past, the ejector is lifted out of the groove. At the end (11b) of the ejector remote from the cartridge mounting are laterally projection pins which protrude into corresponding recesses in the breech head and which act as pivot shafts. The ejector is held in position by a spring in the form of a lug-like extension (9a) of a cup washer (9) mounted at the rear end of the breech head.

Description

RHEINMETALL

File R 609 Düsseldorf, June 24th, 1975

Re / Sch

Extractors for firearms

The present invention relates to an extractor on a a bolt head and an axially displaceable firing pin having bolt for firearms, the engages under spring action with a nose in a corresponding pull-out groove of a cartridge case, which together is expelled with the projectile by the propellant gases from the gun barrel.

For such rifle cartridges as they are, for. B. in the DT-OS 2 320 399 is normally not an extractor necessary, since the cartridge case - as already mentioned, together with the projectile from the propellant gases from the gun barrel is driven out. If this is not the case, then the fire must be interrupted for a long time, because the shooter has to try to get the cartridge case out of the barrel.

If, at this point in time, the barrel is very hot due to a long series of shots, there is a great risk of that the cartridge is ignited by the heated barrel and the shooter is seriously endangered.

609883/0619

~ 2 - KX RHEINMETALL

On the rifle cartridge according to DT-OS 2 320 399 a circumferential groove is already provided as a pull-out groove, so that one could initially assume that a normal extractor, as is known from all firearms that fire cartridge ammunition, including rifle cartridges, their Cartridge case is expelled together with the projectile by the propellant gases from the gun barrel, would be applicable.

However, this is not the case, since the conventional extractors every time a cartridge is in the chamber is inserted into the pull-out groove to eject the cartridge case when the breechblock is opened. For purposes of the type mentioned, these are Extractor useless, however, since this means that the cartridge case is held by the extractor every time and ejecting the cartridge case forward from the gun barrel is thereby hindered and the cartridge case is also partially destroyed in the process.

The object of the present invention is to provide an extractor for firearms that allows the cartridge case to be driven out together with the projectile by the propellant gases forward from the gun barrel not obstructed and no destruction causes on the cartridge case during expulsion, but which then always comes into engagement with a cartridge case and ejects this backwards when the breechblock is opened, if a cartridge case due to a failure remains in the run.

According to the invention, this is achieved in that the extractor is radially pivotable in a recess in the breech head is mounted, has a radially directed to the beveled tip of the firing pin extension and at rapid firing pin can be lifted out of the pull-out groove.

609883/0619

RHEINMETALL

2b3ü7üb

This arrangement ensures that with every shot, d. H. every time the firing pin snaps forward, the extractor is lifted out of the extractor groove and thus the cartridge case is driven out towards the front cannot hinder the gun barrel.

On the other hand, since the firing pin springs back immediately after firing, the extractor returns to its original position Position back and, if a cartridge case is left in the barrel, can use the retracting breech eject.

In a further advantageous embodiment of the invention it is provided that the extractor on its the cartridge chamber facing away from the end has laterally protruding pins, which in corresponding recesses of the bolt head protrude and serve as pivot axes and that it is in its position by an extractor spring in the form of a tongue-like extension of a provided at the rear end of the bolt head cup seal is held.

By mounting the extractor in laterally protruding pins, the extractor is secured against falling out to the front, while the tongue-like extension of the cup seal provides cushioning and protection in the radial direction takes over. The cup seal is provided on the breech head, as a cartridge case, which together with the projectile is expelled by the propellant gases forward from the gun barrel, no sealing of the breech against leakage the Puivergase can be achieved and is not even wanted.

In a further embodiment of the invention, the front end of the firing pin is or has an inclined surface provided with a conical point.

609883/0619

RHElNMETiBkLL

2530 / öb

The extractor according to the invention is based on the following the attached drawing explained in more detail and show:

1 shows a partial section through the firearm in the area of the breech closed shutter and

Fig. 2 is a plan view of the breech head.

As can be seen, the rear end of the gun barrel 1 has a cartridge chamber la, to which the sealing space ic and the locking chamber Ib adjoin.

The breech head 5 rests with its front side the end face id of the chamber la on when the breech is closed and locked. The bolt head 5 is festwrbunden by means of its cylindrical extension 5a to the locking piece 3, which by means of of the locking lugs 3a in the locking chamber Ib is being held.

The firing pin 7 is displaceably guided in a bore in the bolt head 5. It has an inclined flat 7a or a conical point by means of which the extractor 11 can be raised. For this purpose, the extractor Ii provided with an extractor nose ila has a radial extension lic directed towards the firing pin 7 .

At the end lib of the extractor facing away from the cartridge chamber la 11, the lateral pins 11d are provided, which protrude into corresponding recesses in the breech head 5 and serve as pivot axes. As a result, the extractor is secured against falling out to the front, while the tongue-like Extension 9a between the bolt head 5 and

609883/0619

- 5 - £ jX RHEINMETALL

the locking piece 3 arranged cup seal 9 as Extractor spring acts and holds and secures extractor 11 in the radial direction.

In Fig. 1, the firing pin 7 is in its foremost Position shown. A cartridge case is no longer in the chamber la and the extractor 11 is through the inclined surface 7a on the firing pin 7 radially outwards raised so that the extractor nose 11a cannot come into contact with the cartridge case.

If the firing pin 7 now returns to its starting position, the extractor 11 also lowers into its rest position return. If a cartridge case had remained in the chamber lia, in this case the extractor nose 11a Engage in the pull-out groove of the cartridge case and pull it backwards out of the cartridge chamber lia.

The inventive design of the extractor 11 is achieved in a simple and reliable manner that the extractor only works when a cartridge case is actually to be extracted, d. H. when a shot could not be fired properly or if the cartridge case was not affected by the propellant gases from the gun barrel was expelled.

609883/0619

Claims (4)

RHINE METAL. File R 609 Düsseldorf, June 24th, 1975 Re / Sch Claims 1- Extractor on a bolt head and one in it axially displaceable firing pin having closure for firearms, the spring action with a nose engages in a corresponding extraction groove of a cartridge case which, together with the projectile, is released from the propellant gases is driven out of the gun barrel, characterized in that the extractor (ll) is mounted radially pivotable in a recess of the bolt head (5), one radially on the beveled Has the tip of the firing pin (7) directed extension (lic) and when the firing pin (7) shoots forward the pull-out groove can be lifted out. 2. Extractor according to claim 1, characterized in that that it has laterally protruding pegs at its end (lib) facing away from the cartridge bearing (la) (lld) which protrude into corresponding recesses in the bolt head (5) and act as pivot axes serve, and that it is in its position by an extractor spring in the form of a tongue-like extension (9a) a at the rear end of the bolt head (5) provided cup seal (9) is held. 3. Extractor according to claim 1 wire 2, characterized in that that the front end of the firing pin (7) with an inclined surface (7a) is provided " 609883/0619 - 2. - tv Λ RHEINMETALL 4. Extractor according to claim 1 or 2, characterized in that the front end of the
Firing pin (7) is provided with a conical taper. 609883/0619