Straight-pull repeating rifle

Abstract

The invention relates to a straight-pull repeating rifle comprising a barrel (2) connected to a breechblock housing (1). A breechblock, which comprises a pivotable breechblock head (3) connected to a breechblock sleeve (6), slides on the breechblock housing (1). In this case, the connection between the breechblock head (3) and a slot (6.1) in the breechblock sleeve (6) is a rotating sleeve (4). A bolt handle (9) which can be rotated into an open position is located on the rear of the breechblock. The bolt handle engages in the breechblock housing (1) via a lever (10). Furthermore, the bolt handle (9) is locked by a spring-loaded handle lock (11), which holds it in the open position.

Description

[0001] straight-pull repeater

[0002] The invention relates to the field of weapons technology, namely to rifles with straight-pull bolt action, such as hunting carbines.

[0003] In all conventional rifles with straight-pull bolt action and locking lugs, the bolt handle typically does not interact with the receiver during ejection of the spent cartridge case or chambering of a cartridge. The bolt handle generates the torque of the bolt head, which is transmitted into a longitudinal movement via the engagement of the chamfers on the locking lugs of the bolt head and receiver. These chamfers help overcome the force exerted on the bolt head when a cartridge is inserted and allow it to assume a position in which the bolt head can rotate and engage behind the receiver. This longitudinal movement of the bolt head is achieved with the force required to fully chamber the cartridge and remove the spent case. The length of the longitudinal movement of the bolt head rotation is directly related to the size of the corresponding chamfers.There are situations where the longitudinal movement of the bolt head's rotation is insufficient. In these cases, reloading the cartridge and removing the spent cartridge case without additional tools is difficult or impossible. This can be caused by operating conditions and inferior cartridges. However, increasing the chamfers to avoid such situations simultaneously reduces the area of ​​the locking lugs on both the bolt head and the receiver. This negatively affects the weapon's safety, or it leads to an increase in the weight of the bolt and the entire weapon due to the increased diameter of the locking lugs. Predefined chamfers do not transmit the torque of the bolt head when removing the spent cartridge case; they merely allow the bolt to begin a longitudinal movement before the bolt head reaches the open position.The cartridge case is forcibly extracted due to inertia when opening the bolt or with the aid of additional elements that contact the bolt head. Simultaneously, the bolt handle does not interact directly with the bolt body, leading to difficulties in ejecting the cartridge case and the need to fully open the bolt. This, in turn, generates additional noise during reloading.

[0004] The straight-pull bolt is known from the prior art and is described in patent application EP 0 784 194 A2, published on July 16, 1997, which was selected as the closest analogue (prior art). The bolt has a bolt head that is rotated by the interaction of the spiral guide groove with the locking lug, which is moved longitudinally by rotating the bolt handle. The direction of rotation of the bolt handle corresponds to the line of movement of the bolt.

[0005] The disadvantage of the analogous design is that the bolt handle is located at the front of the bolt, which impairs the reloading speed. The forced extraction of the cartridge case and the final loading of the cartridge are achieved solely via the matching chamfers on the locking lugs. The straight-pull bolt described in German patent application DE 10 2016 120 891 A1, published on May 11, 2017, which was chosen as an analogous design, is known from the prior art. The bolt has a bolt head with a spiral guide groove, which is rotatable by its interaction with the ejector pin on the bolt carrier. This ejector pin is moved longitudinally by rotating the bolt handle parallel to the plane of the rifle.

[0006] The disadvantage of the analogue is that the final loading of the cartridge only occurs via the matching chamfers on the locking lugs. The forced extraction of the cartridge case is achieved with the help of additional parts when opening the bolt, which contact the bolt head. At the same time, the bolt handle does not interact directly with the bolt body, leading to difficulties in removing the cartridge case and the necessity of fully opening the bolt.

[0007] Further state of the art regarding rifle bolts, especially for straight-pull repeating rifles, is disclosed in US 10,077,957 Bl, EP 3 623 740 Bl, US 11,493,291 B2, DE 49 192 A, AT 401 307 B and EP 4 166 891 BL

[0008] The technical problem that the invention is intended to solve is that the force required for the forced extraction of the cartridge case and the final reloading of the cartridge from the shoulder of the bolt handle is insufficient.

[0009] The technical problem to be solved by the invention is to increase the force for the forced extraction and final reloading of the cartridge.

[0010] The technical result of the stated invention is the increase in the reliability of the breech when using ammunition of poor quality, fouling and icing.

[0011] The technical result is achieved according to claim 1. Essential for achieving the technical result in a straight-pull repeating rifle, which includes a barrel mounted on the receiver in which the bolt slides with a rotatable bolt head connected to the receiver via a rotating sleeve, is therefore, in particular, that it also includes a bolt handle connected to a lever and is rotatably coupled to the receiver on the receiver, wherein a spring-loaded handle lock serves to hold the handle in the open position and to lock the receiver in the closed position.

[0012] The technical result is also facilitated by the fact that the rotating sleeve moves along the spiral groove of the locking sleeve and converts the translational movement of the locking mechanism into a rotation of the locking head.

[0013] The technical result is further enhanced by the fact that the rotating sleeve has a conical bore for interaction with the spring-loaded conical bushing. Under the influence of a spring-loaded conical bushing, the rotating sleeve tends to assume a neutral position in which it locks the locking head in the open position.

[0014] The technical result is further enhanced by the fact that the bolt handle has a locking tooth that secures the handle in the closed position of the bolt. This is further enhanced by the bolt handle's pivoting tab, which interacts with the bolt body. When the bolt handle contacts the bolt body, it is forced to rotate into the closed bolt position.

[0015] The technical result is also facilitated by the fact that the lever has a contact surface for interaction with the firing pin spring via the firing pin nut.

[0016] The technical result is further enhanced by the fact that the spring-loaded handle lock has a locking tab that interacts with the plate, which is either permanently attached to the bolt body or is an integral part of the body. Upon contact with the plate, the handle lock moves downwards, thus unlocking the bolt handle from the open position.

[0017] The technical result is also facilitated by the fact that the plate has a recess that allows the lever to rotate freely without moving the closure.

[0018] The technical result is also facilitated by the fact that the handle lock has a return spring that touches the plate and returns the lock to its original position.

[0019] The technical result is also facilitated by the fact that the lever interacts with the plate.

[0020] The technical result is also facilitated by the fact that the firing pin, which is firmly connected to the detent, is located at the other end of the firing pin spring.

[0021] The technical result is also favored by the fact that the rest stop is located on the extraction tunnel.

[0022] In a preferred embodiment of the invention, as shown in the drawing, the rifle comprises a breechblock, a barrel, and a bolt head that is rotatable by the interaction of a rotating sleeve with a groove in the breechblock. The rotating sleeve is spring-loaded by the conical bushing and can move along the slot when actuated by the push pin. On the opposite side of the breechblock is the bolt handle, which is connected to the lever. The bolt handle has a locking tooth that engages with the pawl rotating about an axis and locks the bolt in the forward position by means of the pawl projection. In the open position of the bolt handle, the pawl holds the lever until it is lowered from contact with the plate. Upon contact with the plate, the return spring of the pawl assists the spring-loaded plunger in returning the pawl to its initial position.The spring-loaded plunger and spring are mounted on the bolt sleeve. The plate, which is either fixed to the bolt body or a single piece, works with the lever to prevent the bolt sleeve from rotating on its axis. The bolt handle is forced open or closed by the firing pin spring via the firing pin nut. The other end of the firing pin spring is connected to the firing pin, which is rigidly linked to the sear for the trigger lever, which is cocked by the trigger mechanism. The bolt's design features ensure reliability, safety, and ease of use. This is due to the bolt handle having a shoulder that is more than three times as long as the shoulder of the lever that opens or closes the bolt.The force generated when turning the handle to lock or unlock the bolt is distributed across the entire travel of the bolt head within the receiver. With inferior ammunition, icing, or contamination, there is a high probability that a cartridge will be reloaded or a spent cartridge case will be ejected.

[0023] Brief description of the drawings

[0024] The core of the invention is explained with reference to the following illustrations:

[0025] Fig. 1.1 : Longitudinal section of the rifle with the breech open, with the bolt in contact with the plate;

[0026] Fig. 1.2: Isometric view of the rifle with the breech open, with the bolt in contact with the plate.

[0027] Fig. 2: Side view with local section of the rifle, showing the grip in contact with the receiver;

[0028] Fig. 3: Longitudinal section of the rifle with the grip in the middle position;

[0029] Fig. 4.1 : Longitudinal section of the rifle in the locked position;

[0030] Fig. 4.2: Isometric view of the rifle in the locked position;

[0031] Fig. 5 Locking head in locked position;

[0032] Fig. 6 Locking head in open position;

[0033] Fig. 7: Longitudinal section of the locking head in the locked position;

[0034] Fig. 8: Longitudinal section of the locking head in the open position;

[0035] Fig. 9: Isometric view of the interaction between the rotary sleeve and the pressure pin.

[0036] The rifle contains: bolt body 1 with locking lugs 1.1, barrel 2, bolt head 3, rotating sleeve 4 with conical bore 4.1, push pin 5, bolt sleeve 6 with slot 6.1, conical bushing 7, conical bushing spring 8, locking tooth 9.1 and pivoting tab 9.2 on the bolt handle 9, contact surface 10, lever 10, tab lug 11.1 and recoil lug 11.2 on the handle locking 11, locking axis 12, recess 13.1 on the plate 13, breechblock 14, locking plunger 15, plunger spring 16, firing pin 17, firing pin 18, sear 19, firing pin nut 20, firing pin spring 21, trigger 22.

[0037] Detailed description of the invention

[0038] The barrel 2 is rigidly connected to the breechblock housing 1, in which the breech sleeve 6 with the groove 6.1 slides longitudinally. The rotating sleeve 4 slides on the breech sleeve and also moves transversely within the breech head 3. During the closing movement of the breech, the breech head, resting against the base of the cartridge case, begins to rotate due to the action of the rotating sleeve 4 (Fig. 6). Fig. 5 shows that when the breech is opened, the breech head 3 engages with the locking lugs 1.1, and the breech sleeve 6, which moves rearward, begins to rotate the breech head 3 by means of the rotating sleeve 4, thereby unlocking the breech.

[0039] In Fig. 7, the conical bore 4.1 of the rotating sleeve 4 engages in the spring-loaded conical bushing 7, which tends to return the rotating sleeve 4 to its original position (Fig. 8). In the original position, the rotating sleeve 4 blocks the rotation of the locking head 3 relative to the locking sleeve 6, since the rotating sleeve 4 is locked in the slot 6.1 of the locking sleeve 6 in this position, and to release this connection it is necessary to press the rotating sleeve 4 into the locking head 3 by means of the pressure pin 5 rigidly fixed in the locking housing 1 (Fig. 9).

[0040] To generate a significant force for locking and unlocking the bolt, the rear part of the bolt housing 6 is equipped with a rotatable bolt handle 9, which is rigidly connected to the lever 10. The rotational force of the bolt handle 9, when transmitted to the lever 10, is substantially increased. To convert the rotational force of the lever 10 into a translational movement of the bolt on the bolt body 1, there is a plate 13 into which the lever 10 engages, attracting or pushing the bolt towards or away from the contact point. To hold the bolt handle 9 in the open position, the handle locking mechanism 11 is held in the open position. This mechanism is connected via the locking plunger 15 to a spring element in the form of a plunger spring 16, which is located in the breechblock 14. The handle lock 11 is provided with a return bottle 11.2, which assists the plunger spring 16 in returning the handle lock 11 to its starting position.Since the sear 19 engages the trigger lug 22 and thereby cocks the firing pin 17, the bolt is forced open by the firing pin spring 21. The bolt handle is provided with a locking tooth 9.1, which blocks the rotation of the handle lock 11 about the locking axis 12 and holds the handle lock 11 in engagement with the plate 13 on the lug 11.1, which in turn locks the bolt in the closed position until the bolt handle 9 rotates and is released from the handle lock 11 (Fig. 4). To hold the bolt handle 9 in the closed position of the bolt and prevent spontaneous rotation, there is a contact surface 10.1, which interacts with the firing pin nut 20 and is spring-loaded by the firing pin spring 21. When the firing pin 17 is cocked, the holding force of the bolt handle 9 is higher than after the bolt has been released. The contact surface 10 provides support when opening the bolt.1. Use the chamber handle 9 to assume the open position.

[0041] When the bolt is cocked, the bolt handle 9, together with the lever 10, is in the open position and locked by the handle locking lug 11. Upon impact with the plate 13, the tab 11.1 lowers the handle locking lug 11, thus unlocking the bolt handle 9 and the lever 10, which, however, can remain in the open position due to the shooter's grip (Fig. 1). A pivoting tab 9.2 (Fig. 2) forces the bolt handle 9 to rotate.

[0042] As soon as the bolt handle 9 begins to rotate, the lever 10 begins to interact with the plate 13, thereby pulling the bolt forward until it is locked (Fig. 3). Simultaneously, the plate 13 has a recess 13.1 that allows the lever 10 to rotate freely without moving the bolt. The free rotation of the lever 10 enables the bolt handle 9 to lock the handle lock 11 with the aid of the locking tooth 9.1.

[0043] Reference symbol list:

[0044] 1. Locking housing

[0045] 1.1. Closure nipples

[0046] 2nd run

[0047] 3. Locking head

[0048] 4. Swivel sleeve

[0049] 4.1. Conical bore

[0050] 5. Pushpin

[0051] 6. Sealing sleeve

[0052] 6.1. Slot

[0053] 7. Conical bushing

[0054] 8. Conical bushing spring

[0055] 9. Chamber handle

[0056] 9.1. Locking tooth

[0057] 9.2. Swivel tab

[0058] 10. Lever

[0059] 10.1. Contact area

[0060] 1. Handle lock

[0061] 1.1. Lop wart

[0062] 1.2. Return bottle

[0063] 2. Locking axis

[0064] 3rd plate

[0065] 3.1. Recess

[0066] 4. Little Castle

[0067] 5. Locking plunger

[0068] 6. Plunger spring

[0069] 7. Firing pin

[0070] 8. Striking pin

[0071] 9. Rest

[0072] 10. Firing pin nut

[0073] 11. Firing pin spring

[0074] 12. Deduction

Claims

Claims 1. Straight-pull repeating rifle with a barrel (2) connected to a receiver (1), wherein a bolt slides on the receiver (1) comprising a pivotable bolt head (3) connected to a bolt sleeve (6), wherein the connection between the bolt head (3) and a slot (6.1) of the bolt sleeve (6) is a rotating sleeve (4), wherein a bolt handle (9) rotatable into an open position is located at the rear of the bolt and engages in the receiver (1) via a lever (10), wherein the bolt handle (9) is further locked by a spring-loaded handle locking mechanism (11) which holds it in the open position.

2. Straight-pull repeater according to claim 1, characterized in that the rotating sleeve (4) is spring-loaded by means of a conical bushing spring (8) seated in a conical bore (4.1).

3. Straight-pull repeating rifle according to claim 2, characterized in that the bolt housing (I) is provided with a pressure pin (5) which presses on the rotary sleeve (4) at the moment of contact.

4. Straight-pull repeater according to claim 1, characterized in that the bolt handle (9) is connected to the lever (10) or can be integral with the lever (10).

5. Straight-pull repeating rifle according to claim 4, characterized in that the lever (10) has a contact surface (10.1) cooperating with the spring-loaded firing pin nut (20).

6. Straight-pull repeating rifle according to claim 1, characterized in that the grip lock (II) has a tab wart (11.1) for unlocking the chamber handle (9) and locking the closure in the closed position.

7. Straight-pull repeater according to claim 1, characterized in that the grip lock (11) has a return bottle (11.2) for returning the lock to its initial position.

8. Straight-pull repeater according to claim 1, characterized in that the bolt handle (9) has a locking tooth (9.1) for locking the breech in the closed position.

9. Straight-pull repeater according to claim 1, characterized in that the bolt handle (9) has a pivotable tab (9.2) for forced pivoting in the open position.

10. Straight-pull repeater according to claim 1, characterized in that the plate (13) has a recess (13.1) for blocking the lever (10) and is designed as a separate part or can be integral with the housing.

Images