SU23833A1 - Rifle bolt rifle for firing side-fire cartridges - Google Patents

Description

This invention relates to a rifle for firing side-firing cartridges with a rotating cylindrical bolt.

In the attached drawing of FIG. 1 shows a longitudinal section of a rifle (the shutter is closed and parts of the mechanism are at rest); FIG. 2 is a longitudinal section of the rifle (the bolt is open; the cartridge is in the receiver, descending in a raised position); FIG. 3-longitudinal section of the rifle (the rifle is charged; the bolt is closed; the drummer is cocked; the fuse is in the working position); FIG. 4-longitudinal section of the rifle (drummer lowered; moment of shot); FIG. 5 is a cross-section of FIG. 2, each representing the mutual position of the locking (combat) protrusions of the shutter and the corresponding combat protrusions of the receiver, with the shutter open; FIG. 6 is a cross-section of FIG. 2 along the line d-g represents the mutual arrangement of the guide groove of the locking part of the shutter and the stopper with the shutter open; FIG. 7 is a cross-section of FIG. 1, along line e, represents the mutual arrangement of the bolt lugs and the corresponding lugs of the receiver, with the bolt closed (locked); FIG. 8 is a cross-section of FIG. 1, line ZH represents the mutual position of the guide groove of the locking part of the shutter and the stopper with the shutter closed (locked); FIG. 9, 9, and 9 depict a front view of the bolt in various projections; (battle larvae); FIG. 10, 10, and the locking part of the shutter also in various projections; FIG. 11-part. and a longitudinal incision of the rifle at the time of ejection of the fired cartridge case; FIG. 12 is a general view of the rifle with the bolt removed; FIG. 13-general view of the shutter, taken out of the receiver; FIG. The 14-cross-section of figure 12 along the y-k line represents the mutual position of the stopper lowered by hand and the guide grooves of the bolt not taken out of the receiver.

The receiver 1 (Fig. 1) represents a through tube, into the front of which the barrel 2 is screwed. The middle part of the receiver, where it has the smallest internal diameter, is open at the top, thereby forming a window 3 and a receiver 4 for the cartridge (FIG. 1 and 2). Inside the receiver 1 is placed the bolt A (Fig. 1 and 13). Shutter A consists of main parts; front combat larvae 5 (Fig. 1 and 9) and rear locking part 6 (Fig. 6, 1 and 10). The bolt A with its combat larva 5 enters the receiver 4 of the receiver, while the locking part 6 of the bolt A is placed in the rest of the

hook 21. The trigger trigger, acting on the upper protrusion 47 of the descent 39, presses the latter to the drummer (Fig. 1 and 3), while gaining the trigger 21 (Fig. 4), she whispered 44, acting on the protrusion 48 of the descent 39, lowers the latter downwards, as a result of which the previously cocked drummer 29 (Fig. 4) descends. receiver and penetrates into the receiver 4, located above the bottom of the last Hefo (Fig. 2 where the bottom of the receiver is marked with a dotted line). With such a device, when the cartridge is inserted into the receiver 4 (Fig. 2), it is located on the upper plane 49 of the descent 39, i.e. slightly higher than the bottom of the receiver 4 and, with the introduction of naTpojia into the barrel chamber, the cartridge slides along the head on the aforementioned plane 49 of the descent 39, and FIG. 2 it is not difficult to see that when the cartridge starts to enter the barrel chamber when the shutter closes (charging), it takes a horizontal position from the very first moment and will not hang down. The proposed rifle is equipped with a fuse 50; Its device is as follows: as can be seen from FIG. 1, 3 and 12, the fuse 50 is mounted on a pin 41, which, as already mentioned, is mounted on the receiver. The upper part of the fuse 50 has a forked form and this part of it enters the corresponding sockets 51 (Fig. 12), having a fuse 50 on the sides of the receiver 1 on the stud 41. The fuse 50 in its middle part forms a jumper 52 in which the descent 39 abuts with its lower protrusion 53, when the hammer 29 is cocked (Fig. 3), and turn the fuse to the right. In order to control the fuse by hand, it is provided with a foot 54, which somewhat emerges from the bottom of this last bed (Fig. 3). Fixing the fuse in its two positions, i.e. in the working (Fig. 3) and non-working (Fig. 4), it is produced by a solid spring 56 (Fig. 1.3 and 12), mounted on the bottom of the receiver n

which has a double bend 57 and 57 at its right end. Brackets 58 and 58 alternately fall into these bends 57 and 57 of the spring, fastened at the sides of the fuse 50 (Fig. 3 and 4). Fuse 50, besides its immediate function of the fuse, also plays the role of the indicator of the position of the firing pin, since, when the firing pin is lowered, the foot 54 of the safety can be reversed due to the fact that the latter, with its tongue (52) 39 (fkg. 4).

The interaction of the parts of the rifle consists in the following: when charging, turn the handle 7 of the bolt A upwards; During this rotation of the handle, the lugs 13 of the locking part b come out from under the respective lugs 14 of the receiver 1 (Fig. 5). At the same time, the longitudinal fascia 16 (Fig. 6) of the locking part 6 of the bolt / 4 becomes exactly in front of the stopper 15, and with this position of the bolt A, the latter can be pulled back (Fig. 2). This movement of the bolt will continue until the suit of the left end of the groove 16 of the locking part 6 rests on the stopper 15 (Fig. 2). With such a deflected position of the bolt A, descent 39, getting off the hammer 29 under the action of the sear 44 trigger 21 rises up and the protrusion 43 of the shutter 39 will be in front of the drummer 29 (Fig. 2). Now, putting the window 3 into the receiver 4 cartridge (Fig. 2), push the bolt forward to the end, inserting the cartridge into the barrel chamber, and then turn the shutter handle down (Fig. 3). With this rotation of the handle, the lugs 13 of the locking part 6 of the bolt A will again become in front of the lugs 14 of the receiver 1. At the same time, the stopper 15 with its upper spherically sharpened part will enter the recess 25 of the locking part 6 (Fig. 8), fixing the very last in this its position. Drummer 29, resting on the ledge 43 of the descent 39, will be on combat platoon (Fig. 3). In this position, the parts of the rifle will be charged and ready to fire.

Part 6 of the bolt A (Fig. 6, 8 and 10). The depth of the said recess 25 is somewhat longer than the depth of the transverse groove 16, as a result of which, when the shutter is opened, .e. when its handle is turned upwards (Fig. 6 and 8), at the very first moment of turning the handle, the stopper 15 is lowered downwards and, therefore, some compression of the spring 19 and, as a result, some resistance is created to the rotation of the handle 7. The I, which must be expended at j just turning the handle, fully ensures the shutter A is accidentally opened. When fired (Fig. 4), i.e. when the trigger 21 is pressed, the resistance to the rotation of the handle on the spring side 19 indicated above is further increased, since by pressing the trigger 21 the spring 19 will be in a more compressed state (Fig. 4). The handle 7 of the gate A in the proposed system is not integral with the locking part 6 (Fig. 10), but is connected with the locking part 6 of the shutter A by the fact that the handle 7 with its lower part fits into the corresponding slot on the locking part b and is tightly studded (Fig. 10). Such a device greatly simplifies the manufacture of both the locking part 6 and the handle 7.

Percussion and release device in the proposed rifle have the following device. On the central axis of the gate A, i.e. both in his battle larvae 5 and in the locking part 6 there are channels 28 and 28 which, when connecting both said parts of gate A into one whole, are a continuation of one another (Fig. 1). In this common channel, a cylindrical drummer 29 is placed with its spring 30 and a sub tube 31, which prevents the spring from twisting during the assembly of the bolt. The drummer 29 in its lower part has a longitudinal through groove 32. This groove 32 includes the nipple 33 of the screw 34. the larvae 5 reinforced from below. The nipple 33 prevented the drummer from turning around its axis. The front part of the drummer is equipped with a brisk 35; while the striker is located not away from the central axis of the drummer.

those. not to the left and not to the right of it, but above the axis of the drummer. The location of the striker head 35 of the striker over the axis of the striker, namely in the xg / plane (Fig. 1), has the advantage that the firing pin is in the same plane with the extractor 36, which in the proposed rifle is fixed in channel 37 also above the axis of the striker i.e. in the plane (Figs. 1 and 9), when extracting the shot sleeve, it completely eliminates cases of the sleeve being pulled off the hook of the extractor 36, since the head of the sleeve (Fig. 11) is between the hook of the extractor 36 and the beacon 35 of the striker 29, The force is pressed by this latter to the hook of the extractor 35 under the action of the spring 30 of the striker 29. The triggering device in the proposed rifle consists of the following: a through groove 38 is cut through the bottom of the receiver 1, which communicates with the receiver 4 of the receiver (Fig. 1 and 2). In this groove is placed the trigger 39, which with its left end is mounted on a stud 40, which is fixed on the receiver. The slide 39 represents a thin plate about 2 mm thick of the corresponding outline. The descent 39 on the stud 40 may somewhat swing up and down; however, the limit of this swing is caused by another pin 41, which is fixed on the receiver and passes through the oval hole 42 on the slope 39 (Figs. 1, 2 and 3). Above the oval hole 42, the lowering 39 forms a protrusion 43.

The descent 39 of this protrusion 43 through the slot 26 at the bottom of the combat larva penetrates the groove 32 of the impactor and presses against this last sear 44 of the hook 21, which is under the constant action of the spring 19. The trigger 21 is mounted on the pin 45, which is fixed on bury 46, strengthened, in turn, on the receiver. The right side of the protrusion 43 of the descent 39 serves to stop the striker when he is in the cocked position (Fig. 3), while the left side of the protrusion 43 serves as a reflector (Fig. 11).

In its right part, the descent has two protrusions 47 and 48, between which an end is placed — a sear 44 descent

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