Mauser-werke Oberndorf Gmbh

Rheinmetall Industrie Aktiengesellschaft

Mauser-werke Obendorf Gmbh

Helmut Mader

Gerhard Bilger

Erich Matzagg

Gerhard Hupp

Lothar Post

Horst Menges

Rainer Buhl

Erich Bender

A breechblock system for a gun includes a breechblock; a firing pin slidably received in the breechblock and having two diametrically oppositely located catch recesses; and two locking levers pivotally supported by the breechblock on opposite sides thereof and each having first and second arms. The two locking levers have a locking position and an unlocking position. In the locking position the first arm of the respective locking levers projects into the respective catch recesses for preventing the firing pin from moving from its locked position into its firing position. Further, two bolts are provided which are movably supported on opposite sides of the breechblock and which cooperate with the breechblock and with respective locking levers. The bolts have a withdrawn position and an advanced position. In the withdrawn position the bolts are out of a depressing engagement with the respective locking levers, whereby the locking levers are maintained in the locking position by a force-exerting arrangement. In the advanced position the bolts depress the respective locking levers, whereby the locking levers are maintained in the unlocking position in which the second arms of the respective locking levers are spaced from the catch recesses.

Breechblock system for a gun

A cartridge feed device of an automatic weapon, including a damping coil spring 5 arranged in a hollow shaft 13 carrying a star wheel 14. The initial torsional tension of the coil spring 5 may be set and adjusted. A coupling sleeve 10 is arranged for this purpose between a follower sleeve 7 and the hollow shaft 13. In its disengaged position, the follower sleeve 7 is adjustable relative to the other follower sleeve 2 of the coil spring 5 relative to the axis of rotation D. In the engaged position, the coupling sleeve 10 holds the follower sleeve 7 nonrotatably relative to the hollow shaft 13.

Automatic weapon cartridge feed device

A cartridge feed mechanism of an automatic firearm is mounted pivotably on a drive housing. In the pivoted-up position, a coupling tongue 15 of the transmission shaft 9 of the cartridge feed mechanism engages with a coupling groove of a drive sleeve of the drive housing. The coupling tongue shall be prevented from rotating when the cartridge feed mechanism is pivoted down from the drive housing. For this purpose, a slide 16, which locks the transmission shaft 9 in a locking position and releases it in a releasing position, is mounted on the cartridge feed mechanism. Slide 16 is pressed by the drive housing into its releasing position when the cartridge feed mechanism is in the pivoted-up position. In the pivoted-down position of the cartridge feed mechanism, it is brought into its locking position by a compression spring.

Cartridge feed mechanism for an automatic firearm

To permit single firing in a machine gun by a mechanical method, a trip lever is moved by a control surface attached to the weapon housing during the weapon recoil after triggering a shot. This motion causes the trip lever to disengage a coupling on the crankshaft. Because of this, the trigger plate can return to its starting position by means of spring force, independently of the position of the cocking lever. The recoil breech can then be caught by the trigger in the weapon housing. If the cocking lever is moved back, it again couples because of the spring.

Automatic machine gun

With the device a repositioning of ammunition feeds of an automatic weapon into various feed positions and a secured position is achieved. The selective positioning is achieved by a lever which is pivotally supported alongside a drive shaft and abuts by an integrally formed cam at one end face of a pivoting support part axially against a sleeve which is axially displaceable on the drive shaft. The sleeve is under the biasing force of a spring. The end face of the sleeve biasing toward the pivoting support part of the lever possesses also a cam which is in operative connection with a cam of the pivoting support which upon engagement effects a coupling driving engagement of the lever with the shaft. The mechanism acts to hold the lever of the ammunition feed in a respective position by means of the spring.

Device for repositioning ammunition feed of an automatic weapon

A breech lock mechanism for automatic firearms, in particular, a rigidly closing breech lock mechanism with loosely located support flaps in its breech head which will slide along an associated and complementary formed latching and unlatching component into its rearward latching position during the opening of the breech lock mechanism. The surfaces of the support flaps which face towards the latching and unlatching component are at least partly provided with a lubricating layer whose hardness is different with respect to the complementary latching and unlatching component.

Breech lock mechanism for automatic firearms

The safety lock for a barrel of automatic weapons comprises a breechblock carrier whose face facing the barrel confronts a slide. This slide is movable essentially perpendicular to the longitudinal axis of the barrel into a recess provided in the outside surface of the barrel, if the barrel is correctly locked.

Locking device for a gun barrel of an automatic weapon

A detonator lock on an automatic firearm, with a breech mechanism which is displaceable from a rear position into a priming position, comprises a safety device which can be pushed into the path of the closing device and is operatively connected with the support piece of the detonator. The safety device can be rigidly barred by a spring-supported lock bolt, the lock bolt which is held in position by a control element which is inserted in the path of the safety device before the safety device has moved into either the secured or the priming position.

Firing pin safety lock for an automatic firearm

In automatic firearms having a caliber in the range of about 20 to 40 mm, so-called 'jammed shell casings' are occasionally encountered due to the high cadences during the extraction and ejection of the empty cartridge casings, so that the returning breech mechanism tends to lose the cartridge, and the ejector plunger no longer fully impacts against the casing to be ejected. In order to avoid this drawback a recess arranged in the breech head concentrically to the firing pin is provided along its periphery opposite an extractor claw with at least one projection to assist in the centering and retention of the cartridge casing and which can be adapted to the respective type of breech mechanism. The projection is formed by cutting or non-cutting working. Preferably, two or more such projections are formed which then, together with the extractor claw, form a type of 'three-point support' for the cartridge casing during the extraction.

Breech mechanism for automatic firearms

An automatic firearm and particularly a gas operated weapon comprises a cartridge feeding system which operates upon movement of a reciprocating breech block during recoil and counter recoil to feed a series of cartridges in succession to the cartridge chamber of the gun barrel under the control of gas pressure which is generated during the firing of each cartridge. The cartridge feeding mechanism includes a drive head having a rotatable bushing which is driven by a gear drive and with an end drive face which has an engagement slot therein formed with inwardly tapering walls in a direction inwardly of the drive face. A cartridge feed mechanism is pivoted to the drive head and it may be positioned in engagement with the drive head or removed for purposes of changing ammunition. The cartridge feed mechanism includes a drive hub with a transfer element in said hub which has an outwardly tapered couplng portion which is engageable in the slot of the drive face of the rotatable bushing.

Growing community of inventors

Schramberg, Germany

Helmut Mader