RU2760362C1 - Small arms magazine with feeder - Google Patents

Abstract

FIELD: weaponry.SUBSTANCE: magazine for small arms contains a feeder with a cylindrical groove. The generatrix of the cylindrical surface deviates in lateral projection from the cartridge feed line formed by the upper edge of the magazine jaws, while the deflection angle is oriented in the direction at which a larger sample of material is formed in the rear of the feeder than in the front. The magazine for small arms contains a feeder with a conical or prismatic groove. The cone or prism forming the groove face is oriented in such a way that a larger sample of material is formed at the rear of the feeder than at the front.EFFECT: magazine for small arms improvement.2 cl, 4 dwg

Description

The invention relates to the design of stores for small arms, including pistols.

Known standard pistol magazine PM, which consists of a body, a feeder with a spring and a cover. The upper edges of the side walls of the body are bent inward to hold loaded cartridges in the magazine body, as well as to guide cartridges when they are fed into the chamber at a certain angle. The feeder is used to feed cartridges. The feeder spring serves to feed up the feeder with cartridges when firing. (technical edition "Pistol Makarov PM", O. Alekseev, F. Mikhailov "TT, Makarov, PSM").

Also known as a prototype store with an elongated body (patent for invention RU 2702473 C1), including a body, a feeder with a spring.

The experience of using magazines with an elongated body on pistols of different designs shows that the more cartridges loaded into the magazine, the greater the angle of deflection of the cartridge feed into the barrel chamber from the calculated feed angle, determined by the inclination of the upper edges of the side walls of the magazine body in the lateral plan (when viewed from the side) ... When the magazine is loaded with cartridges, due to the inevitable presence of gaps between the moving parts of the magazine, the body and the feeder, during the supply of cartridges to the barrel, the actual angle of supply deviates from the calculated one.

For a visual demonstration of the reason for the occurrence of a significant angle of deflection of the feed in figure 1 presents photographs of loaded magazines taken from publicly available sources. When the magazine is equipped with a large number of cartridges, the lower cartridges in the magazine unfolds in the longitudinal plane, as a result of which a gap 1 occurs. magazines to the jaws and the feed angle may deviate from the calculated one. There is a problem of sticking the cartridge into the lower part of the barrel (slide).

Cartridges that have a round or pointed shape that significantly protrude beyond the sleeve are not very sensitive to this problem, since a bullet, hitting the slide of the barrel with its central part, lifts the cartridge up the hill, compensating for the downward peck of the cartridge. However, not all cartridges have a pointed or round shape protruding from the sleeve. For example, rubber bullets for traumatic weapons, as a rule, are pressed inside the sleeve, and the sleeves themselves are elongated. The cartridge of a traumatic weapon in the front part has only a rolled sleeve, the edges of which can fall into the lower part of the barrel and thereby interfere with the normal feeding of the cartridge.

To solve the problem of deviation of the actual feed angle from the calculated one, a technical solution is proposed. In the upper plane of the feeder there is a groove that forms in the feeder a face belonging to the cylindrical surface, so that the generatrix of the cylindrical surface deviates in lateral projection from the cartridge feed line formed by the upper edge of the magazine jaws. The deflection angle provides a more cavity in the rear of the feeder than in the front. Thus, the spring pressure is redistributed to the front of the feeder and the effect of the reversal of the cartridges in the magazine is compensated.

By a cylindrical surface, the author understands a set of parallel straight lines (forming a cylindrical surface) intersecting a curve (guiding a cylindrical surface). In this case, the guide line can be either a circle or an ellipse, or any other arbitrary curved line.

EFFECT: reliable supply of cartridges into the chamber when using magazines in small arms and the possibility of using elongated magazine bodies in small arms while maintaining the stability of the supply of cartridges.

The proposed solution has advantages over the generally accepted methods of its solution. An analysis of the state of the art has shown that, as a rule, weapons manufacturers solve the indicated problem in two main ways: either bending the upper coil of the magazine spring, or changing the angle of the entire upper plane of the feeder relative to the angle of the cartridge feed in the lateral projection. The version with a spring is very ineffective, since the bending of one coil of the spring creates a force that is redistributed to all coils of the spring when it is uniformly compressed, thereby minimizing the effect of such compression. And a change in the angle of inclination of the upper plane of the feeder relative to the cartridge feed angle causes the following undesirable consequences: the feeder pressure only on the front part of the magazine body jaws, which, during long-term storage and use of the magazine, can lead to their divergence to the sides relative to each other, as well as point (undistributed) force on the ridge of the bolt in the absence of cartridges in the store, which can affect the difficult feeding of the last cartridge or poor locking of the cartridge in the barrel.

The common essential features with the prototype are the presence of a housing, a feeder and a feeder spring at the store.

Particular essential features include the following features: the magazine feeder on the upper edge has a groove that forms in the feeder an edge belonging to the cylindrical surface, so that the generatrix of the cylindrical surface deviates in lateral projection from the cartridge feed line formed by the upper edge of the magazine jaws. In this case, the deflection angle is oriented in the direction at which a larger sample of material is formed in the rear of the feeder than in the front.

In a possible embodiment of the manufacture of a feeder with the same technical result, particular essential features will be: the magazine feeder has a groove on the upper edge, forming in the feeder an edge belonging to a conical or prismatic surface, while the cone or prism forming the edge of the groove is oriented in such a way that in the rear part of the feeder, a larger sample of material is formed than in the front.

Figure 2 shows a sketch of a small arms store from different angles.

Figure 3 shows a feeder.

The magazine for small arms has a housing 2, a feeder spring 3, a feeder 4, on the upper edge of which there is a groove 5, which forms in the feeder an edge belonging to a cylindrical surface, so that the generatrix of the cylindrical surface 6 deviates in lateral projection from the cartridge feed line 7, formed by the top edge of the magazine jaws. In this case, the deflection angle 8 is oriented in the direction at which a larger sample of material is formed in the rear part of the feeder than in the front.

The invention works as follows. The magazine jaws in the lateral plan determine the angle of the cartridge feed into the chamber, and the material sampling in the upper part of the feeder provides a compensating redistribution of the spring pressure to the front of the cartridge when it is fed, thereby pressing the cartridge to the magazine jaws evenly along the entire length of the cartridge.

Industrial applicability is confirmed by the presence of a manufactured sample of the feeder and test results at the production base of CJSC TECHNOARMS, Moscow. Figure 4 illustrates the arrangement of cartridges in the magazine both with a feeder without a groove that compensates for the skew of cartridges in the magazine body (position 9), and with a feeder with a groove that compensates for the skew of cartridges (position 10). At the same time, in position 9 between the feeder and the lower cartridge there is a gap caused by the skew of the cartridges, and in position 10 there is no such gap, the skew is compensated. The absence of skewing affects the uniformity of compression of the upper cartridge by the spring against the magazine jaws when it is fed into the chamber. The displacement of the cartridge in position 10 is along a line defined by the line of the magazine jaws in the lateral projection.

Claims (2)

1. A magazine for small arms, including pistols, consisting of a body, a feeder spring, a feeder, characterized by the presence of a groove on the upper edge of the feeder, which forms a face in the feeder that belongs to a cylindrical surface, so that the generatrix of the cylindrical surface is deflected in a lateral projection from the cartridge feed line formed by the upper edge of the magazine jaws, while the deflection angle is oriented in the direction at which a larger sample of material is formed in the rear of the feeder than in the front. 2. A magazine for small arms, including pistols, consisting of a body, a feeder spring, a feeder, characterized by the presence of a groove on the upper edge of the feeder, which forms a face in the feeder that belongs to a conical or prismatic surface, while forming a groove face or the prism is oriented so that a larger sample of material is generated at the rear of the feeder than at the front.

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