AT401307B - CYLINDER LOCK FOR BOLT RIFLE - Google Patents

Description

AT 401 307 B

The invention relates to a cylinder lock for a bolt action rifle, with a chamber rotatably mounted about its axis in a directionally displaceable chamber housing and connected to a chamber handle, with an axially displaceable firing pin in the center of the chamber, which is concentrically surrounded by a spring, with a rear end of the striking spring supporting, axially displaceable abutment piece, with an acting on the abutment piece, axially movable by means of a manually operated pivot about a transverse axis of the chamber axis and lockable in the clamping position, and with a connected to the rear end of the firing pin Holding part, which cooperates with a trigger pawl mounted on the lock housing.

In such a known cylinder lock (EP-36853 A2), a manually operated angle lever is pivotally mounted at the end of the chamber housing about the pivot axis running transversely to the chamber axis. The inner lever arm of the angle lever is connected to the abutment piece via a link which forms the clamping piece. On the other lever arm of the angle lever, which serves as a handle, a spring-loaded locking lever is provided which engages in the clamping position of the angle lever on a locking catch of the chamber housing. When the bolt action rifle is in use, the locking lever is normally in its locked locking position, which means that the abutment piece is in a forward position via the handlebar, i.e. Clamping position is held. If the chamber is rotated about its axis by means of the chamber handle to open the cylinder lock, then a tensioning curve provided on the chamber moves the firing pin backwards against the force of the striking spring, which on the one hand tensions the striking spring and on the other hand locks the holding part onto the trigger pawl. Before this has not happened, the abutment piece cannot be moved back to relax the striking spring, because a locking bar provided on the trigger pawl prevents the abutment piece from moving back. However, as soon as the trigger pawl is engaged on the holding part, after releasing the locking lever, the angle lever can be pivoted into its second position, as a result of which the abutment piece is pulled back over the handlebars and the striker spring is thus relaxed. This relaxation of the striking spring is also possible if, after the described opening of the closure and tensioning of the striking spring, the closure has been closed again. If, in the manner described, the abutment piece was moved backwards by means of the angle lever, then the closure can also be actuated when the striking spring is relaxed. Before firing a shot, the angle lever must be moved back into its locking division, whereby the abutment piece is moved forward into its clamping position and the striking spring is tensioned again. By the spring-loaded locking lever, the angle lever is then held in its locking division, so that even when repeating the abutment piece remains in its clamping position and the striking spring is inevitably tensioned in the manner described when opening the closure. This inevitable clamping has the disadvantage that the bolt action rifle is immediately " activated " becomes. If there is still a sharp cartridge in the barrel and no second shot is fired, accidental handling of the repeating rifle can lead to accidents if the trigger is actuated accidentally by hand or by any other object. A shot can also be released if the weapon is knocked or dropped. Only when the shooter deliberately releases the locking lever and swivels the angle lever after the repeating process can the abutment piece be moved back out of its clamping position, thereby releasing the striking spring and thus preventing inadvertent firing of the shot. So if the shooter does not consciously move the abutment piece into the relaxed position, then he is not forced to separately tension the firing pin spring before firing each shot. Furthermore, the angle lever is kept relatively small for reasons of weight, so that it does not impair the handling of the repeating rifle. This has the disadvantage that relatively large forces have to be used to move the abutment towards the clamping lever against its force on the actuating handle of the bell crank. The repeating process also requires a relatively large amount of force, because in addition to the friction of the closure parts, the force required to tension the striking spring must also be applied, which is difficult when it occurs in the stop. If a firing pin or its holding device breaks before the chamber is completely locked to the barrel again during the repeating process, the cartridge may ignite. In this case, the explosion pressure of the cartridge pushes the chamber and its housing backwards in the direction of the protection, which can lead to injuries to the same and to bystanders. In order to prevent the shot from being fired via the trigger device when the chamber is not or only partially locked, the conventional bolt action rifles are provided with a device which inhibits the intact firing pin when the chamber is fully or partially open, which is usually done by the clamping curve, that the cartridge cannot be ignited. This leads to " failures " when the bolt handle is unconsciously or accidentally, e.g. when the bolt action rifle is resting, is raised slightly. 2nd

AT 401 307 B

Another known cylinder lock (EP 114 355 A2) corresponds in principle to the cylinder lock described above. Again, an abutment piece is axially displaceable relative to the chamber. The abutment piece is actuated by means of a tensioning lever which can be pivoted about a pivot axis running transversely to the chamber axis, and a tensioning piece. By means of the clamping lever, the clamping piece is held in its front position and thus the abutment piece in its clamping position. As long as the lever is not deliberately moved by the shooter into another position, in which he no longer engages a gradation of the clamping piece, the abutment piece remains in its clamping position. As a result, this cylinder lock has exactly the same disadvantages as described at the beginning. With this cylinder lock, too, the striking spring is automatically tensioned with each repeating process, unless the shooter deliberately shifts the oil against spring force before repeating and thus brings the abutment piece into its relaxed position. None of the closures described above ensures that the striking spring is inevitably relaxed before each shot is fired and must be consciously tensioned before each shot is fired.

Furthermore, a cylinder lock is known (DD-PS 140 382), which is preferably intended for small-caliber rifles. For this reason, the locking is not carried out by rotating the chamber, but by pivoting a pivotable locking lever behind the chamber in the closed position and supporting it with its rear end on the locking lever. To actuate the locking lever, a tensioning lever is provided which is firmly connected to the locking lever. The clamping lever is pivotally mounted on a counter bearing that is immovable relative to the barrel and the weapon. The tensioning lever is connected to the chamber via a tensioning rod acting in the manner of a handlebar. By pivoting the tensioning lever, the chamber can be moved in the axial direction in a sleeve for performing the repeating process. If the clamping lever is moved forward, the chamber moves back and a firing pin catch engages behind the trigger bar. If the clamping lever is then pivoted backwards, the chamber is moved forward. In this case, the abutment, which is firmly connected to the chamber and on which the striking spring is supported, is pushed forward, as a result of which the striking spring is tensioned. This tensioning of the Schiagfeder corresponds to the tensioning of the striking spring in the case of conventional cylinder locks, in which the chamber is locked by rotating the same. After each repetition, the striking spring is automatically tensioned in this known closure. A relaxation of the striking spring would only be possible in that the closure is opened again by pivoting the tension lever forward. A simple relaxation and tensioning of the striking spring regardless of the actuation of the closure is not possible at all. This is due to the fact that with this closure there is no axially displaceable abutment. The advantages, which are given by a separate tensioning and relaxing of the striking spring independently of an actuation of the closure, are therefore not present in this closure.

The invention is based on the object of providing a cylinder lock for a repeating rifle of the type mentioned at the outset, which gives it a special security in that in the conventional manner

Repeat process that can be carried out in such a way that the striking spring is not inevitably tensioned, but can be consciously tensioned in a simple manner with a relatively small amount of force before firing each shot and which is also simple in construction.

This is achieved according to the invention in that the chamber handle is provided for actuating the clamping piece, one end of which is pivotable relative to the chamber about the pivot axis running transversely to the chamber axis and is connected to the clamping piece in terms of drive.

In the cylinder lock according to the invention, the chamber handle has a double function. It is not only used to open and close and to move the chamber back and forth, but also to tension, but in particular also to relax the striking spring by means of the clamping piece. When opening the lock, the chamber handle must first be pivoted from its front clamping position to the repeating position around the pivot axis. Here, the clamping piece is inevitably brought into a position in which the abutment piece can move to the rear. As a result of the abutment piece moved backwards, the tension spring is tensioned in the subsequent repeating process, i.e. not possible when opening the chamber, pushing it backwards, then pushing it forward and closing the chamber. This makes the bolt action rifle much safer. A shot cannot be released unintentionally, because even after the chamber has been closed, the striking spring remains initially untensioned. Neither the unintentional actuation of the trigger, nor in the event of a fall or impact on the weapon, a shot is triggered because the striking spring is always unstressed. Only immediately before each shot is fired must the shooter consciously tension the striking spring by pivoting the bolt handle from its rear repeating position to its forward pivoting position. Here 3

AT 401 307 B, the abutment piece is moved to the front via the striker connected to the chamber handle, thereby tensioning the striker. Since the force is applied to the relatively long chamber handle and this is located in the immediate vicinity of the trigger, the tensioning spring can be tensioned with relatively little effort and also quickly in fractions of a second. Tensioning the striking spring by means of the chamber handle also requires a relatively small amount of force in the cylinder lock according to the invention, since the tensioning takes place when the chamber is completely closed and therefore no frictional forces caused by the locking device have to be overcome. In addition, even if the firing pin or its holding device breaks during the opening of the chamber, a cartridge cannot be ignited, since before the chamber is opened, the striking spring is always first relaxed by pivoting the chamber handle about the pivot axis. The cylinder lock according to the invention is also characterized by a relatively small number of individual parts.

Advantageous embodiments of the invention are characterized in the subclaims.

The invention is explained in more detail below with reference to an embodiment shown in the drawing. Show it;

FIG. 1 shows an axial section of the closed cylinder lock in the repeating position of the chamber handle with a relaxed impact spring,

FIG. 2 shows an axial section of the closed cylinder lock in the tensioned position of the chamber handle with the striking spring tensioned,

3 shows a cross section along the line III-III of FIG. 1,

FIG. 4 shows a partial bottom view in the direction IV of FIG. 1 with the cover plate omitted,

5 shows a partial view of the chamber parts in the region of the chamber handle according to the line V-V of FIG. 3.

The drawing shows the cylinder lock with a locked chamber, the locking lugs 2 arranged at the front end of the chamber 1 being locked in the axial direction on the radially inwardly projecting locking projections 3 of the dash-dotted locking head 4. The chamber 1, which in the embodiment shown consists of three chamber parts 1a; 1b and 1c, is rotatably mounted in the chamber housing 5 about its axis A. The chamber housing 5 is connected to two guide rails 6, which are mounted in the direction of the chamber axis in front of the closure housing 7, of which only the rear part is shown.

In the first chamber part 1a carrying the locking lugs 2, the firing pin 8 is arranged axially displaceably in the center. The firing pin 8 is surrounded concentrically by the striking spring 9, which is supported with its front end on a collar 8a of the firing pin 8. The second chamber part 1b is connected to the latter via claws 10 which engage in corresponding recesses in the first chamber part 1a. In the second chamber part 1b, the abutment piece 11, which is advantageously designed as an abutment bush, is mounted so as to be displaceable in the direction of the chamber axis A. The striking spring 9 is supported on the abutment piece 11 with its rear end. The clamping piece 12, which has a clamping cam 12a, is arranged behind the abutment piece 11. This tensioning cam 12a acts on the rear end of the abutment piece 11. The clamping piece 12 is fixedly connected to one end 13a of the chamber handle 13. This one end 13a can be pivoted with respect to the chamber 1 about a pivot axis B which runs transversely to the chamber axis A and intersects the chamber axis. For this purpose, as can be seen from FIG. 5, the second chamber part 1b has two diametrically opposite, semicircular recesses 14 at its rear end. The third chamber part 1c provided behind the second chamber part 1b is likewise provided with two semicircular recesses 15. The recesses 14 and 15 of both chamber parts 1b and 1c enclose one end 13a of the chamber handle 13 and a cylindrical attachment 16 provided on the other side of the clamping piece 12 and aligned with the end 13a in the manner of bearing shells.

The chamber housing 5 has, as can be seen in particular from FIG. 4, in the region of the clamping cam 12a a first recess 17 running in the circumferential direction to the chamber axis A and a second recess 18 running in the direction of the chamber axis A. These two recesses 17, 18 are arranged with respect to the tensioning cam 12a in such a way that the tensioning cam 12a only into the first recess 17 when the abutment piece is completely relaxed, as shown in FIG. 1, and only into the second recess 18 in the complete locking chamber ( Figure 2) can occur. In this way it is ensured that an opening of the chamber is only possible in the repeating position shown in FIG. 1, in which the abutment piece 11 is in its rear end position, which causes the spring to relax. Conversely, the chamber handle 13 can only be pivoted out of its repeating position shown in FIG. 1 into its clamping position shown in FIG. 2 when the chamber is completely locked. Only then can the tensioning cam 12a enter the second recess 18 4

AT 401 307 B occur, whereby the abutment piece 11 is brought into its front clamping position and thus the striking spring 9 can be tensioned.

So that the chamber handle 13 and thus also the clamping piece 12 and the abutment piece 11 are held in their clamping position shown in FIG. 2, the abutment piece 11 expediently has a latching recess 19 at its rear end and the clamping cam 12a is radial on its axis opposite the pivot axis B. Provide the outer end with a locking lug 12b, which engages in the locking position 19 in the clamping position of the clamping piece 12, as can be seen from Figure 2. The latching recess 19 is expediently designed as an annular groove with a V-shaped cross section, which is incorporated in the rear end face of the abutment bush 11.

Behind the clamping piece 12, a holding piston 21, which is loaded in the direction of the clamping piece 12 by the spring 20, is expediently provided. This holding piston 21 acts in the repeat position of the chamber handle 13 on a rear end face 12c of the clamping piece 12 and thus holds the chamber handle in the repeat position. This ensures that before the repetition process begins, i.e. before opening the chamber, the tensioning cam 12a is aligned with the first recess 17 and the repeating process can thus be initiated without hindrance.

The firing pin 8 is expediently passed through the abutment piece 11, the clamping piece 12 and the holding piston 21. For this purpose, the parts mentioned have corresponding bores or recesses. At the rear end 8a of the firing pin 8, the holding part 22 is attached. The holding part 22 has a latch 22a, which cooperates with a pawl 23 pivotably mounted in the closure housing 7. The front end of the trigger pawl 23 is supported by the support rod 24 as long as the trigger is not actuated.

So that the striker has a certain pretension even when the cylinder lock is not tensioned, the mutual movement of the striker 8 relative to the abutment piece 11 is limited by a shoulder 11a provided on the abutment piece 11 and a collar 25 provided on the striker. The collar 25 is formed by two half-shells projecting over the diameter of the firing pin 8, which are arranged concentrically to the firing pin 8 and engage in a recess 26 of the same.

The new cylinder lock works as follows:

The chamber handle 13 is used, as in conventional bolt action rifles, first for locking, opening and moving the chamber, that is, for repeating. In order to insert the chamber into the closure head, the chamber handle 13 is pivoted up in the direction of arrow C {FIG. 3) about the chamber axis A, whereby the chamber part 1b is rotated counterclockwise according to FIG. 3 and in this case also the chamber part 1a via the claws 10 turns. After the front end of the chamber part 1a has been inserted into the closure head .4, the chamber handle is pivoted downward in the direction of the arrow C, so that the locking lugs 2 are locked behind the locking projections 3 of the closure head 4. After the locking has ended, the chamber handle assumes the repeating position shown in FIGS. 1 and 3. Here, the tensioning cam 12a is aligned both with the first, circumferential recess 17 and with the second recess 18, which runs in the axial direction (FIG. 4). The closure is now closed but not under tension. Only immediately before a shot is to be fired must the shooter consciously press the chamber handle 13 in direction D, the chamber handle pivoting about the pivot axis B. As a result, the clamping piece 12, which is fixedly connected to one end 13a, is also pivoted in the same direction of rotation. The tensioning cam 12a enters the second recess 18 and presses the abutment piece 11 forward with its inclined surface 12d. Here, the striking spring 8 is tensioned. The locking lug 12b engages in the locking recess 19 and the bolt action rifle is thus ready to fire. Since the tensioning cam 12a engages in the second recess 18, the tensioning position of the chamber handle shown in FIG. 2 is secured against pivoting about the chamber axis A in the direction C. This securing takes place automatically when the striking spring 8 is tensioned. This ensures that accidental contact with the chamber handle 13, e.g. when placing the rifle, this can not be raised and the chamber can not be partially or fully opened. At the same time, however, it is also ensured that when a shot is deliberately fired, the firing pin 8 can move freely under the action of the striking spring 9 and trigger the shot. "Failures" are thus avoided. If the trigger is actuated to fire a shot, the support rod 24 can move downwards and the trigger pawl 23 releases the holding part 22. This causes the firing pin 8 to move forward and ignite the cartridge. At the same time, the striking spring 9 relaxes. As is known, after the firing of a shot the weapon is moved forward again by the elastic resistance of the shooter, the chamber handle is pivoted backwards into its repeating position due to the inertia relative to the weapon and then by the holding piston 21 held in this position. After firing a shot, the chamber 5

Claims (13)

AT 401 307 B reached 13 again in its repeat position and the shooter can repeat the weapon in the usual way by swiveling the bolt handle in direction C. If the chamber housing 5 is shifted to the rear, the holding part 22 is caught by the trigger pawl 23. When the chamber housing 5 is then moved forward and the chamber is closed, the trigger pawl 23 holds the holding part 22 and thus also the firing pin 8 in its rear position. The parts of the cylinder lock assume the position shown in FIG. 1 again after the chamber has been closed. If the shooter has pivoted the chamber handle 13 forward into the cocking position, but then has not fired a shot, the shutter can be easily released again by pivoting the chamber handle 13 back into the repeating position. If the shooter forgets this relaxation and acts on the weapon when the pistol is switched off, the chamber handle 13 is automatically pivoted back from the cocking position into the repeating position due to the inertia. The breech automatically relaxes without a shot being released. The new cylinder lock is simple in construction because it has relatively few individual parts. In addition, various safety devices that are required in known repeating rifles can be omitted. The multi-part design of the chamber has the advantage that the foremost chamber part can move relative to the chamber axis when a shot is fired. As a result, an even contact of all three locking lugs of the front chamber part on the closure head is achieved and the vibration behavior is improved. In addition, when changing to another caliber, only the front part of the chamber and not the entire chamber can be replaced. 1. Cylinder lock for a bolt action rifle, with a chamber rotatably mounted in a directionally displaceable chamber housing and connected to a chamber handle with a chamber handle, with an axially displaceable firing pin in the center of the chamber, which is surrounded concentrically by a striking spring, with a rear one End of the striking spring supporting, axially displaceable abutment piece, with an acting on the abutment piece, by means of a manually operated, pivotable about a transverse to the chamber axis pivoting lever axially movable and lockable in the clamping position and with a holding part connected to the rear end of the firing pin , which cooperates with a trigger pawl mounted on the breech housing, characterized in that the chamber handle (13) is provided for actuating the tensioning piece (12), one end (13a) of which extends around the axis transverse to the chamber axis (A) the lower axis (B) can be pivoted with respect to the chamber (1) and is connected in terms of drive to the tensioning piece (12). 2. Cylinder lock according to claim 1, characterized in that the clamping piece (12) with one end (13a) of the chamber handle (13) is firmly connected and one provided at a distance from the pivot axis (B) on the rear end of the abutment piece ( 11) acting tensioning cam (12a). 3. Cylinder lock according to claim 2, characterized in that the chamber housing (5) in the region of the clamping cam (12a) has a first, circumferential recess (17) into which the clamping cam (12a) can only enter when the abutment piece (11) is relaxed , and has a second recess (18) running in the direction of the chamber axis (A), into which the clamping cam (12a) can only enter when the chamber (1) (18) is completely closed. 4. Cylinder lock according to claim 1, characterized in that the abutment piece (11) concentrically surrounds the firing pin (8). 5. Cylinder lock according to claim 4, characterized in that the abutment piece (11) is designed as an axially displaceable sleeve in an axial bore of the chamber (1). 6. Cylinder lock according to claim 2, characterized in that the abutment piece (11) has a locking recess at its rear end (19) and that the clamping cam (12a) at its radially outer end with respect to the pivot axis (B) with a locking lug (12b) is provided, which in the clamping position of the clamping piece (11) engages in the locking recess (19). 6 AT 401 307 B 7. Cylinder lock according to claim 5 and 6, characterized in that the latching recess (19) is formed as an annular groove with a V-shaped cross section which is incorporated in the rear end face of the abutment sleeve (11). 8. Cylinder lock according to claim 2 and 3, characterized in that behind the clamping piece (12) in the direction of the clamping piece (12) spring-loaded holding piston (21) is provided, which acts on a rear end face (12c) of the clamping piece (12) and holds it in a position in which the clamping cam (12a) is aligned with the first recess (17). 9. Cylinder lock according to at least one of claims 1 to 8, characterized in that the firing pin (8) through the abutment piece (11), the clamping piece (12) and the holding piston (21) is passed and the holding part (22) at a distance behind the holding piston (21) is arranged. 10. Cylinder lock according to at least one of claims 1 to 9, characterized in that the chamber (1) consists of at least two coaxially arranged, with claws (10) interlocking chamber parts (1a, 1b), of which the first chamber part ( 1a) carries the locking lugs (2) and the second chamber part (1b) encloses the abutment piece (11) and the clamping piece (12). 11. Cylinder lock according to claim 10, characterized in that the second chamber part (1b) has at its rear end two diametrically opposed, semicircular recesses (14) and that behind the second chamber part (1b) a third chamber part (1c) is provided, which has two identical, semicircular recesses (15), the recesses (14, 15) of both chamber parts (1b, 1c) enclosing one end (13a) of the chamber handle (13) in the manner of bearing shells. 12. Cylinder lock according to claim 9, characterized in that the mutual movement of the firing pin (8) relative to the abutment piece (11) under the action of the striking spring (9) is limited by a provided on the abutment piece (11) paragraph (11a) and one on the firing pin (8) provided collar (25). 13. Cylinder lock according to claim 12, characterized in that the collar (25) is formed by two half-shells which understand the diameter of the firing pin (8) and are arranged concentrically to the firing pin (8) and engage in a recess (26) thereof. With 1 sheet of drawings 7