RU2121641C1 - Multirow box-shaped magazine for small arms with variable number of rows - Google Patents

Abstract

FIELD: automatic weapons, specifically, mechanisms feeding cartridges in small arms. SUBSTANCE: multirow box-shaped magazine for small arms with variable number of row is composed of body of variable box-shaped section with separating partitions used to store and transport cartridges, feeder, feeder spring and lid of spring. In wide part of body cartridges are positioned in two two-row passages in staggered arrangement. In narrow part of body cartridges are positioned in one two-row flow in staggered arrangement. Curvilinear surfaces, for instance, circular cylinder or cone depending on configuration of cartridges are used in transition from wide to narrow parts. Hinge feeder may change its width that makes it possible for it to pass through narrow part of body and to press all cartridges stored in wide part under bends. Such design allows capacity of magazine to be increased by 75-90% without growth of its length in comparison with classic two-row magazines. EFFECT: increased capacity of magazine. 6 cl, 10 dwg

Description

 The invention relates to the field of automatic weapons, and in particular to mechanisms for supplying small arms with cartridges.

 There are numerous designs of in-line box-shaped small arms magazines. Widespread single-row stores and double-row stores with cartridges of three adjacent cartridges (the so-called arrangement of cartridges). Examples are the shops of the PM pistol and the AKM assault rifle, respectively (Manuals on Small Arms, M., Military Publishing, 1986). A common drawback of such designs is a rather small capacity - 10-40 rounds, which is caused by the impossibility of lengthening the store’s case for reasons of size.

 Known designs of multi-row box-shaped magazines of large capacity, in which the channel for storing and transporting cartridges is formed by the walls of the housing, and the cartridges of all rows are staggered (US patent N 3226869 from 04.01.66, CL 42-50). In addition, the channel for storing and transporting cartridges can be formed by the walls of the body and partitions, dividing the cartridges into two-row streams with a staggered arrangement of cartridges in them (US patent N0 2503116 from 04.04.50, CL 89-33; N 2488233 from 15.11.49 Cl. 42-50). All these structures have a housing of variable width, in the wide part of which the cartridges are located in several rows, and in the narrow part - in two or one row, for the convenience of sending the cartridges into weapons. A common drawback of these designs is that the transition from a wide part of the body to a narrow one is embodied by inclined planes. The rearrangement of cartridges from a larger number of rows to a smaller one in such constructions is associated with significant friction losses, and in conditions of contamination with jamming.

 The closest in technical essence is a multi-row box-shaped small arms store (US patent N 4589218 1984, described in the journal "Technology youth", N 12, 1995, p. 64). The store contains a variable-width housing with cartridge tracks providing point contact of the cartridges with the housing, a feeder, a feeder spring and a spring cover. In the wide part of the body, two double-row channels for storing and transporting cartridges, formed by the walls of the body and partitions, provide a checkerboard arrangement of cartridges in them. The transition from a larger number of rows to a smaller one and vice versa is carried out by means of inclined planes, with one double-row channel shifted relative to the other by 1/2 the diameter of the cartridge. As cartridges are spent from the magazine, cartridges arranged in a checkerboard pattern in two two-row streams of the wide part are moved to the transitional part of the body, where under the influence of inclined planes they are rebuilt into two streams of intermediate constant width, and then in one row. The disadvantage of this design is the significant friction losses during rebuilding of cartridges under the action of inclined planes and movement in streams of intermediate width, and the impossibility of the feeder passing into a narrow part of the housing. In addition, rearranging cartridges from several rows into one row is unnecessary when using magazines of this type in machine guns, submachine guns and machine guns of existing designs, since most of them are designed for double-row magazines with staggered cartridges in them.

 The essence of the invention is that in the case of a store of variable width, the wide part of which is divided by means of partitions into two double-row channels for storing and transporting cartridges with a staggered arrangement of cartridges in them, the transition from a larger number to a smaller one is achieved through smooth surfaces of a circular or elliptical cylinder or cone depending on the configuration of the cartridge, which ensures minimal friction loss when rebuilding cartridges from a larger number of rows to a smaller one and contributes to reliable th store in the conditions of pollution. The narrow part is a two-row channel for storing and transporting cartridges with a staggered arrangement of cartridges in it. The store feeder is hinged with the possibility of changing its width, which makes it possible to move the feeder from the wide part of the body to the narrow one and to feed into it all the cartridges from the wide part. The spring of the store is made of variable cross-section in accordance with the configuration of the housing. This design allows you to almost double the capacity of the store without increasing its size in height and allows you to use the store of this type in existing samples of small arms, which use double-row magazines with staggered cartridges.

 FIG. 1. The appearance of the store.

 FIG. 2. Scan section AA unloaded store.

 FIG. 3. Development of section AA of the equipped magazine.

 FIG. 4. Section BB in FIG. 2.

 FIG. 5. Section BB of FIG. 3.

 FIG. 6. Section GG in FIG. 4.

 FIG. 7. The section DD in FIG. 4.

 FIG. 8. Section EE in FIG. 5.

 FIG. 9. Section FJ in FIG. 5.

 FIG. 10. View T in FIG. 3.

 The case of the store 1 is made as a separate part of a thin-walled box-section with a narrow 2 and a wide 3 parts. On the narrow part of the store, bends 4 were made to hold cartridges in the store and the direction of the when reloading, as well as front 5 and rear 6 hooks for attaching the store to weapons. In the narrow part 2, protrusions 7 are also made to limit the movement of the feeder when all cartridges are used up. The narrow part as a whole is made in the form of a two-row box-shaped channel for storing and transporting cartridges with a staggered arrangement of cartridges in it. In the wide part 3, the front 8 and rear 9 partitions are located for the formation together with the walls of the store case of two double-row channels 10 and 11 for storing and transporting cartridges in which a staggered arrangement of cartridges is implemented. Bends 12 are made on the wide part below for fastening the spring cover 13. The transition from the larger number of rows to the smaller one was made by means of the smooth surfaces 14 of the elliptical or circular cylinder or the casing depending on the configuration of the cartridge, and the duration of the transition from the larger number of rows to the smaller one in each channel was made ranging from two to six cartridge diameters. For the convenience of merging two two-row channels 10 and 11 of the wide part into one channel in the narrow part, one of the channels 10 and 11 is made with a shift relative to the other by 1/2 of the diameter of the cartridge in the direction of transportation of cartridges. To reduce friction losses during the movement of cartridges along channels 10 and 11 and along the narrow part 2 of the magazine, cartridge tracks 15 are made along the entire height of the magazine 15. Inside the magazine case, a feeder 16 is placed, by means of fingers 17, axes 18 and earrings 19 connected with two rechargers 20. The axis 18 of the earrings are placed on the feeder with a shift of half the diameter of the cartridge in the direction of transportation of the cartridges. In the feeder 16, supporting surfaces 21 are provided for the earrings 19. Between the spring cover 13 and the feeder 16, the magazine spring 22 is located. In the unloaded magazine, the feeder 16 is pressed against the protrusions 7 by the spring 22, and the rammers 18 are turned on the earrings 19 until they touch each other.

 The device operates as follows. When the magazine is equipped, the cartridges 23 are stacked alternately under the bends of the magazine 4. At the same time, the cartridges move the feeder 16 towards the wide part 3. After equipping a certain number of cartridges, the ram holders 20 move into the transitional part and under the action of the partitions 8 and 9, the cartridges 23 and the springs 22 gradually turn on the earrings 19 all the way to the earrings 19 in the supporting surfaces 21 of the feeder 16. In this case, the cartridges passing into the transitional part, under the action of the partitions 8 and 9 and the cartridge tracks 15 on the surfaces 12 are alternately directed into the channels 10 and 11. Upon arrival in the wide part 3 under the action of the cartridge tracks 15 and partitions 7 and 8, the cartridges 23 are installed in the channels 10 and 11 in a checkerboard pattern. The process of equipping the store continues until the stop feeder 16 in the spring cover 13.

 When firing cartridges 23, one at a time is selected by a bolt from under the bends of 4 magazines. In this case, the cartridges 23 remaining in the store, under the action of the feeder 16, rammers 18 and springs 22 are able to advance to a narrow part 2 of the housing. While the cartridges 23 move along the walls of a wide part of the body, the staggered arrangement of the cartridges in the channels 10 and 11 is not violated. When cartridges arrive at the transitional part, they are under the influence of cartridge paths 15 passing along surfaces 14 and partitions 7 and 8 are rebuilt in channels 10 and 11 and merge in narrow part 2 into one double-row stream with staggered arrangement of cartridges in it. Upon arrival in the front of the rammer 20, under the action of the cartridge tracks 15, passing along the surface 14, they begin to turn on the earrings 19. Upon arrival in the narrow part, the rammer 20 is turned on the earrings 19 until they touch each other, after which the last cartridges under the bends the store. The process of emptying the store continues until the cartridges are completely exhausted and the feeder 16 stops against the projections 7 of the store.

 This design allows you to 75-90% increase the capacity of the store without increasing its size in height, use the store of this type in existing samples of small arms and increase the reliability of the store in conditions of pollution compared to analogues and prototype.

Claims (6)

 1. A multi-row box-shaped small arms magazine with a variable number of rows, comprising a feeder, a feeder spring, a spring cover and a variable-width housing with cartridge tracks and partitions in a wide part to form two double-row channels together with the case walls, in which the staggered arrangement of cartridges is provided, one double-row channel is shifted relative to the other by 1/2 the diameter of the cartridge in the direction of transportation of cartridges, characterized in that the transition from a large number of rows to a smaller and reverse made by means of smooth curved surfaces, the spring is made of variable cross-section in accordance with the configuration of the housing, the feeder is hinged with the possibility of changing its width in accordance with the configuration of the housing, and the narrow part of the housing is made in the form of a two-row channel for storing and transporting cartridges with staggered cartridges in it .  2. The store according to claim 1, characterized in that the transition from a larger number of rows to a smaller and vice versa is carried out by means of the smooth surfaces of an elliptical cylinder.  3. The store according to claim 1, characterized in that the transition from a larger number of rows to a smaller and vice versa is carried out by means of smooth surfaces of an elliptical cone.  4. The store according to claim 1, characterized in that the transition from a larger number of rows to a smaller and vice versa is carried out by means of smooth surfaces of a circular cylinder.  5. The store according to claim 1, characterized in that the transition from a larger number of rows to a smaller and vice versa is carried out by means of smooth surfaces of a circular cone.  6. Shop according to any one of paragraphs.1 to 5, characterized in that the duration of the transition from a larger number of rows to less and vice versa in each channel is carried out in the range from two to six diameters of the cartridge.

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