DE202011100433U1 - Dismountable rifle - Google Patents

Abstract

Device for easy dismantling and reassembly of a firearm, characterized in that the barrel (1) has a threaded attachment (2) with a lock nut (4) located on this threaded attachment (2) to compensate for possible thread play and fine adjustment of the tightening torque with the breechblock housing ( 3) is connected or can be released.

Description

The invention relates to a technical device that allows a rifle without tools to disassemble and reassemble, without over time creating a game between the assembled parts.

Illustrated by a repeating rifle based on a Mauser 98 system. The Mauser System 98, developed by the Mauser weapons factory in Oberndorf on the Neckar, was delivered millions of times around the world at the beginning of the last century. Many armies were equipped with repeating rifles based on this closure system.

The superior quality and absolute reliability of the system, in terms of function, handling and safety, are still unsurpassed today. For this reason, civilian repeating rifles were equipped with it shortly after the development of this closure system. Hunting weapons with 98 systems have gained an excellent reputation over the decades. Especially under the most difficult conditions, such as when deploying to defensive big game in Africa, the local professional hunters still prefer repeating rifles with Mauser Model 98 systems.

Many gunsmiths still make new repeating rifles today using used original Mauser 98 systems.

Especially with foreign hunters there is a desire to disassemble the weapon into its main components, barrel and shaft system.

This facilitates the transport and allows the use of a short weapon case, which is not recognized as such at first glance.

Already in the wedding of African big game hunting at the beginning of the last century, various manufacturers have offered dismountable repeating rifles (so-called take-down versions). The technical solution was usually that the barrel (with fore-end) could be screwed into the corresponding receiving thread in the front closure sleeve part via the thread located at the rear end (1.10 "x 12 TPI). The lock in the installed state was realized with sliders, locking levers o. Ä.

The technical disadvantage of this solution is that by repeatedly disassembling and assembling the weapon and by the mechanical load when firing ammunition with time creates a thread game. This means that the connection between the run and the system is no longer positive.

As a result, on the one hand, the Treffpunktlage when using a targeting aid, such as rifle scope or diopter change, and on the other hand, the safety of the weapon can be affected.

Elimination of this thread play is not easy. When adjusting the barrel, the closing distance (distance between the cartridge bottom of a cartridge located in the cartridge chamber and the bottom of the closed closing chamber) may change and the sighting needs to be re-soldered, as this no longer points upwards after turning the barrel.

Another solution is to attach in addition to the screwing of the barrel before the thread nor a clamping sleeve. The disadvantage is similar here. The thread gets over time a game that is not easy to eliminate. In addition, the preparation of the clamping sleeve is not easy and usually additional tool is required for installation and removal of the barrel.

Newer technical solutions, such as the patent of Manfred Orth ( AT 000000374917E ) are based on the idea to connect the locking part of the system sleeve firmly to the barrel and then lock this unit via a plug-in fit in the system sleeve. This system is very expensive to produce and can only be used on newly manufactured (expensive) 98 systems.

The invention has for its object to make a detachable by loosening the threaded connection between barrel and system rifle, so that an occurring thread play, which inevitably results from repeated disassembly of the weapon and the strong mechanical stress in the firing, easy to eliminate is, without the closure distance changed or the sight is adjusted.

This object is achieved by the installation of an adjustable lock nut between barrel and closure system with the features of claim 1. Further advantageous embodiments can be found in the dependent claims.

The inventive adaptation of a demountable rifle has a lock nut which is screwed from behind onto the extended fastening thread of the barrel.

This counter nut can be adjusted so that the barrel can be screwed on stop, the sights in the screwed state always vertical and the shutter distance does not change. This counter nut can be slotted at the bottom, and provided with a clamping device for fixing on the barrel.

The invention will be explained in more detail with reference to an embodiment shown in the drawings. Further features of the invention will become apparent from the following description of the embodiment of the invention in conjunction with the claims and the accompanying drawings. The individual features may be implemented individually or in several different embodiments of the invention.

shows the run ( 1 ) with threaded neck ( 2 ), screwed into the closure sleeve ( 3 ). Between run ( 1 ) and closure sleeve ( 3 ) is located on the threaded neck ( 2 ) a locknut ( 4 ). This lock nut can be fitted with a slot ( 5 ) and a locking screw ( 6 ) (please refer ). After loosening the locking screw ( 6 ), the locknut ( 4 ) on the thread approach ( 2 ) of the barrel and then in a changed position by tightening the locking screw ( 6 ) be fixed again. Another way to fix the lock nut ( 4 ) may be a grub screw, which by the lock nut ( 4 ) against the run ( 1 ) is rotated. Without this locknut, the only way to eliminate an existing thread play would be to clear the barrel ( 1 ) further into the thread of the closure sleeve ( 3 ) to turn. This would mean, among other things, that the sighting ( 7 ) or a riflescope mount no longer pointing upwards in the middle.

By using the described lock nut ( 4 ), a thread play that has occurred is eliminated as follows:
The run ( 1 ) with lock nut ( 4 ) is pushed into the receiving thread of the closure sleeve ( 3 ) - But only so far that the sight ( 7 ), or the rifle scope still pointing vertically upwards (See ). In this position, the locking screw ( 6 ) loosened the lock nut. Thereafter, the lock nut with the desired force (tightening torque) against the closure sleeve ( 3 ) and by tightening the locking screw ( 6 ) fixed in this position. Through this procedure, even the smallest thread play can be compensated reliably at any time.

The locking of the barrel in the screwed position can be ensured by various devices.

In different possibilities are shown.

One possibility is a locking screw ( 19 ) through the sleeve wall ( 6 ) into a depression ( 9 ) in the thread approach ( 2 ) of the barrel ( 1 ) is rotated. (Please refer )

Another possibility is to run ( 1 ) firmly with the fore-end ( 10 ) and then in the assembled state fore-end ( 10 ) and buttstock ( 11 ) against each other. For this purpose, both slides ( 12 ), as well as resilient snap-in connections are used. (Please refer )

Preferred embodiment is a lock that works without tools and also facilitates the tightening of the thread.

This technical solution can, as in exemplified as follows:
Forearm ( 10 ) and buttstock ( 11 ) are each provided on the front side with a metal plate. The forend metal plate ( 13 ) is fixed with the lock nut ( 4 ) connected. With the metal plate ( 13 ) is a lever ( 14 ) rotatably connected, which can be pivoted downwards. At the back of the lever ( 14 ) there is an extension ( 16 ) through a vertical slot ( 15 ) in the metal plate ( 13 protrudes. When turning the lever ( 14 ) down the extension moves ( 16 ) in the slot ( 15 ) up. Ideally, the lever is provided with a spring that holds the lever both in the open and in the closed position, so that an unintentional operation is almost impossible.

In the buttstock metal plate ( 17 ) is an obliquely arranged slot ( 18 ) whose lower end ( 19 ) is centered, the upper end ( 20 ) However, (seen from the front) is laterally offset to the right.

• 1. Der Hebel (14) wird nach unten geschwenkt, die Verlängerung (16) bewegt sich im Schlitz (15) nach oben. in dieser Position ragt die Verlängerung (16) nicht mehr über die Metallplatte (13) hinaus. (Siehe )
• 2. Der Lauf (1) mit Vorderschaft (10) wird mit dem Gewindeansatz (2) in die Verschlusshülse (3) eingeschraubt. Bei richtig eingestellter Kontermutter (4) kann der Lauf (1) soweit von Hand eingeschraubt werden, bis die Visierung (7) fast senkrecht steht.
• 3. Nun wird der Hebel (14) nach oben bewegt. Die Verlängerung (16) bewegt sich nach unten und greift dabei in den gegenüberliegenden Schlitz (18) der Hinterschaft-Metallplatte (17) ein. Beim weiteren nach oben bewegen des Hebels [14) folgt die Verlängerung (16) zwangsläufig der Richtung des schräg angeordneten Schlitzes (18). Hierdurch wird der Vorderschaft (10) mit Lauf (1) im Uhrzeigersinn gegen den Hinterschaft (11) mit Verschlusshülse (3) zwangsläufig bewegt. Somit wird der Lauf (1) mit Vorderschaft (10) in seine Endlage in die Verschlusshülse (3) eingeschraubt und festgezogen. Durch die Übersetzung zwischen der Bewegung des Hebels (14) und der zwangsläufigen Drehbewegung des Laufes (1) erfolgt das Festdrehen des Laufes (1) in der Verschlusshülse (3) mit geringem Kraftaufwand und ohne zusätzliches Werkzeug.

When assembling the weapon, the procedure is as follows:

• 1. The lever ( 14 ) is pivoted downwards, the extension ( 16 ) moves in the slot ( 15 ) up. in this position the extension sticks out ( 16 ) no longer over the metal plate ( 13 ). (Please refer )
• 2. The run ( 1 ) with fore-end ( 10 ) with the thread approach ( 2 ) in the closure sleeve ( 3 screwed in). With correctly adjusted counter nut ( 4 ) the run ( 1 ) are screwed in by hand until the sighting ( 7 ) is almost vertical.
• 3. Now the lever ( 14 ) moves upwards. The extension ( 16 ) moves down, reaching into the opposite slot ( 18 ) of the buttstock metal plate ( 17 ) one. When moving the lever further upwards [ 14 ) follows the extension ( 16 ) inevitably the Direction of the slanted slot ( 18 ). This will cause the fore-end ( 10 ) with running ( 1 ) clockwise against the buttstock ( 11 ) with locking sleeve ( 3 ) inevitably moved. Thus, the run ( 1 ) with fore-end ( 10 ) in its end position in the closure sleeve ( 3 ) and tightened. By the translation between the movement of the lever ( 14 ) and the inevitable rotational movement of the barrel ( 1 ), the tightening of the barrel ( 1 ) in the closure sleeve ( 3 ) with little effort and without additional tools.

That disassembly is done in reverse order.

shows the locking lever ( 14 ) in the open position.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• AT 00000037491 E [0012]

Claims (5)

Device for easy disassembly and reassembly of a firearm, characterized in that the barrel ( 1 ) via a threaded projection ( 2 ) with on this thread approach ( 2 ) located counter nut ( 4 ) to compensate for a possible thread play and fine adjustment of the tightening torque with the closure housing ( 3 ) is connected or can be solved. A device for easy disassembly and reassembly of a firearm, according to claim 1, further characterized in that the locknut ( 4 ) is provided with a locking device which allows the position of this lock nut on the threaded neck ( 2 ) of the barrel ( 1 ) to fix A device for easy disassembly and reassembly of a firearm according to claims 1 and 2, further characterized in that the barrel ( 1 ) only so far into the closure housing ( 2 ) can be screwed in that the sighting device ( 7 ) or the target aids recording ( 8th ) always points vertically upwards. A device for easy disassembly and reassembly of a firearm according to claim 1-3, further characterized in that the tightening of the barrel ( 1 ) in the closure sleeve ( 3 ) with a built-in lever mechanism ( 14 ) takes place no additional tool required. A device for easy disassembly and reassembly of a firearm according to claim 4, further characterized in that when closing the lever mechanism ( 14 ) The run ( 1 ) with fore-end ( 10 ) in the end position to the closure sleeve ( 3 ) with buttstock ( 11 ) is brought.

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