Firearms – Breech loading – Sliding breechblock
Reexamination Certificate
1998-12-04
2001-01-30
Ark, Darren W. (Department: 3643)
Firearms
Breech loading
Sliding breechblock
C042S069020, C042S070080
Reexamination Certificate
active
06178682
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to a repeating rifle having a bolt action, comprising a breech housing, a breech body which can be moved and can be rotated in this breech housing and has a movable plug and a firing pin which is loaded by a firing pin spring and has a cocking piece, in which case the breech body has in its interior a cocking guide which interacts with the cocking piece.
AT PS 759051/393 discloses, for example, such a repeating rifle in which the cocking guide is incorporated in the bolt, at the bottom. Although the bolt handle is connected by the force of the firing pin spring to the breech body without any play, no measures are taken, however, to fix it in any position. The plug, which is connected to the breech body, is designed as a bolt safety device there, and can be rotated with respect to the breech body only for this purpose. It is equipped with a trigger vane which points to the rear, for which reason it is also referred to as a vane safety device.
Despite the direct bolt safety device, this design cannot satisfy the requirements now placed on safety and operating convenience. The safety device is bulky, cumbersome and difficult to move, and, in particular, interferes with the fitting of a telescopic sight. In order to remove the breech body, the trigger must be moved forward or, alternatively, the breech body can be fitted and removed even with a weapon which has not been made safe, but both of these are dangerous. The bolt handle cannot be fixed in any position and thus also represents a safety risk since it can inadvertently be entirely or partially unlocked, for example by being placed down on a rucksack.
An externally located, separate retaining spring was admittedly used for fixing the breech body as early as 1903 in the Mannlicher-Schonauer hunting rifle. However, such a retaining spring which acts all the time is stressed even when the breech is not cocked and thus unnecessarily increases the cocking resistance on opening, which detracts from the operating convenience.
The object of the invention is thus to provide a repeating rifle of the type described above wherein maximum safety and maximum operating convenience are achieved with the minimum possible structural complexity.
SUMMARY OF THE INVENTION
The foregoing object is achieved according to the invention wherein a cocking cam bush is guided such that it can be moved in the longitudinal direction in the breech body as the cocking guide, on which cocking cam bush the firing pin spring is supported, and in that the plug has a guide sleeve which interacts with the cocking cam bush.
The interaction of the cocking bush, the firing pin spring and the guide sleeve, in which case the cocking bush is coupled in a rotationally fixed manner to the breech body which can rotate, and the guide sleeve is coupled in a rotationally fixed manner to the plug which cannot rotate, results in the bolt being fixed in various angular positions and a direct bolt safety device, without its own separate springs. In addition, the preconditions are created for a range of other operational simplifications and safety measures.
In accordance with a further feature of the invention, the cocking cam bush has a locking guide which interacts with a cam on the guide sleeve and is formed by a saddle having rising flanks adjacent thereto on both sides, in which case the cam rests in the saddle when the breech body is located in the firing position, and in which case, when the breech body rotates in either direction, the cam moves the cocking cam bush against the stress of the firing pin spring, by sliding on one rising flank, or the other.
Thanks to the locking guide, the additional bolt safety device can also be brought into effect by moving the breech body to a further angular position by movement of the bolt handle, in which case the cam is pressed against one flank of the locking guide. In this further angular position, the bolt handle is resting entirely against the weapon. The saddle in the locking guide, which is loaded by the firing pin spring, holds the breech body in the firing position in a particularly simple manner. If the breech body is rotated counterclockwise for unlocking, the cam presses against the other rising flank of the locking guide. This displaces the cocking cam bush against the force of the firing pin spring. At the same time, the cocking cam bush interacts, however, via its cocking guide with the cocking piece, as a result of which an ergonomic force profile during unlocking and cocking is achieved, even with a cocking guide form that is simple to manufacture.
In an advantageous embodiment, the cocking piece has a release plunger which points downward, and the breech body has a recess at its rear edge, in which case this recess comes to rest in front of the release plunger only when the breech body is in the firing position. The rotation between the breech body and the plug with the guide sleeve is thus additionally used for the direct bolt safety device, for which purpose only the recess need be incorporated.
There are other options for locking the breech body in the position with the bolt safety device. One particularly simple option is to arrange a latching tab in the circumferential direction on the breech body and to mount a longitudinally located slide rod, which is operated by a safety catch, on the breech housing such that it can move, in which case the latching tab is held by the slide rod when the breech body is in the transportation safety position and the safety catch is inserted. In consequence, the breech body jumps to the firing position when the safety catch is released, and the bolt safety device is removed.
In a preferred embodiment, the cocking guide and the locking guide are combined on one radius on the cocking cam bush. The cocking cam bush thus becomes a component which is particularly easy to manufacture, as well as occupying little physical space.
A further simplification and advantageous force relationships are achieved in that the combined cocking guide and locking guide extends over an angle of 180° and is present twice on the cocking cam bush, in which case the guide sleeve has two cams spaced apart by 180°, and the cocking piece has teeth which are each located between two cams In consequence, the requirement for physical space is also kept very low, and the machining process is simple.
REFERENCES:
patent: 2649800 (1953-08-01), Peters
patent: 3416253 (1968-12-01), Larsson
patent: 3979849 (1976-09-01), Haskins
patent: 3996684 (1976-12-01), Bauman et al.
patent: 4152855 (1979-05-01), DuBiel et al.
patent: 4454672 (1984-06-01), Timari
patent: 4547988 (1985-10-01), Nilsson
patent: 4698931 (1987-10-01), Larsson
patent: 4719714 (1988-01-01), Palmisano
patent: 5259137 (1993-11-01), Blenk et al.
patent: 5718073 (1998-02-01), Sachse et al.
patent: 0096028 (1987-12-01), None
patent: 3724936 (1988-06-01), None
patent: 3718431 (1988-12-01), None
Kefer Hubert
Zedrosser Ulrich
Ark Darren W.
Bachman & La Pointe, P.C.
Steyr-Daimler-Puch Aktiengesellschaft
LandOfFree
Repeating rifle with semirigidly lockable bolt action and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Repeating rifle with semirigidly lockable bolt action and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Repeating rifle with semirigidly lockable bolt action and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2523890