WO2012016304A1

WO2012016304A1 - Centerfire non-capsular ammunition

Info

Publication number: WO2012016304A1
Application number: PCT/BG2010/000024
Authority: WO
Inventors: Valeri Emilov Mitkov; Milko Petrov Dobrev
Original assignee: Valeri Emilov Mitkov; Milko Petrov Dobrev
Priority date: 2010-08-04
Filing date: 2010-11-29
Publication date: 2012-02-09
Also published as: BG110724A

Abstract

(57) The centerfire non-capsular ammunition is applied in the field of small arms. The ammunition includes initiating compounds (3), applied over special shim (5) and it is located between the thinned bottom (6) of cartridge- case (1) and the special shim (5). which could be of various shape as over the special shim there is propeUant charge (4), and right below it mere is projectile (2), fixed steadily to cartridge-case (1). The initiating compounds (3) could be applied right over the thinned bottom (6) of the cartridge-case.

Description

Centerfire Non-capsular Ammunition

Technical field

The invention refers to Centerfire Non-capsular Ammunition that is applied in the field of the small arms.

Preceding technical state

There are non-capsular ammunitions for small arms with peripheral . ignition that include cartridge-case, projectile, capsule compounds and propeilant charge (gun powder). Thanks to their construction that is as simplified as possible, they are easy to manufacture. In weir case shot is performed after hit of the firing pin of weapon's striker along cartridge-case peripheral board. As a result of this the capsular compounds is subjected to abrupt shrinkage between cartridge-case walls propped up in the direction opposite to the hit by barrel's front part, it ignites and passes the firing impulse to the gunpowder. It also ignites and die gases resulting from its combustion give the projectile the necessary start speed. This construction requires thin walls of the cartridge-case in the area of the extraction elements and from weapon's cartridge-chamber including in the zone of the cap adapter for locating the extractor, and mis makes it suitable for low- powered arms. The presence of board (ring) significantly hinders the operations for the automated charging of the ammunition and the extraction of its cartridge-case after a shot, resulting in higher per cent of impediments. The eccentric hit of striker's firing pin results in complicating weapon's construction. The shortcomings described above are die reason for the relatively limited application of mis ammunition - only in the case of 5,6 tgp "Flaubert" cartridge and its reinforced option ' 221 K.

There is another type of centerfire capsular ammunition for small arms with central ignition mat include cartridge-case, projectile, capsule compounds and propeilant charge (gun powder), but the capsular compounds in their case is located in specially outlined junction (capsule) > comprising a cup containing the initiating mixture, covered with tin-foil circle. For capsule's breaking during shot it should be in close proximity to hard support - element called "anvil" located in the direction opposite to striker's firing pin. For some types of capsules ("Berdan" for example), the anvil is part of the cartridge chamber of the cartridge-case, and in other cases anvil is detail that is especially prepared and placed inside capsule's cup. This type of ammunition does not require thin walled bottom of the cartridge-case, as well as eccentric hit of pin during shooting, and there is sufficient space for die formation of special channel for the extractor, thus cartridge-case's silhouette does not contain the ring that is uncomfortable if pushing, pulling or extracting is performed. These features have established the utilization of the second type for the majority of gun, revolver, hunting etc ammunitions.

The basic shortcoming of the well-known ammunitions is their complex construction, resulting in higher production prime cost, as well as in the necessity of precise light press or thread assembly of capsule into the cartridge-case for ensuring its bottom's leak tightness.

Invention's technical essence The purpose of the invention is creating Centerfire Non-capsular Ammunition of simplified construction, improved leak tightness, without especially outlined capsule-igniter and with central hit of weapon's striker firing pin.

The solution to the task is centerfire non-capsular ammunition, at figure 1-1 and figure 1-2 consisting of initiating compounds, located between cartridge-case's bottom and special shim, propeUant charge and projectile. Cartridge-case's bottom is thinned to thickness allowing for reliable deformation by weapon's striker firing pin. The initiating compounds could be glued to cartridge-case bottom, or to special shim, depending on the selected technology and this does not influence the capacity of the centerfire non-capsular ammunition. The special shim ensures access of gases resulting from the burn-out of the initiating compounds to the propellant charge that ignites and with die gases resulting from its combustion gives the projectile the necessary kinetic energy. Figure 2-1 to figure 2-8 present the possible options for the special shim preparation. The number and dimensions of outlets or slots made to this end, depend on the diameter of the cartridge-case, the quantity of the initiating compounds and the technological considerations. The special shim is steadily assembled to the cartridge-case via press assembly, kerning, carving etc.

Invention's advantages are: the centerfire non-capsular ammunition has simplified construction, improved ammunition's leak tightness, there is no possibility of moisture entering cartridge-case's bottom, and it gathers in one the advantages of both basic types of ammunitions - without especially outlined capsule-igniter and with central hit of weapon's striker firing pin. Description of the attached figures

The exemplary invention performance is demonstrated at the attached figures as follows:

Figure 1-1 presents scheme of centerfire non-capsular ammunition as in this case the initiated compounds is fixed to the shim;

Figure 1-2 presents scheme of centerfire non-capsular ammunition as in this case the initiated compounds is fixed to cartridge-case's bottom;

Figure 2-1 presents scheme of possible option for the shim manufacture;

Figure 2-2 presents scheme of possible option for the shim manufacture;

Figure 2-3 presents scheme of possible option for the shim manufacture;

Figure 2-4 presents scheme of possible option for the shim manufacture;

Figure 2-5 presents scheme of possible option for the shim manufacture;

Figure 2-6 presents scheme of possible option for the shim manufacture;

Figure 2-7 presents scheme of possible option for the shim manufacture;

Figure 2-8 presents scheme of possible option for the shim manufacture.

Exemplary invention manufacture

The centerfire non-capsular ammunition according to the invention includes cartridge-case 1 with thinned bottom 6 and initiating compounds 3, placed over the thinned bottom 6 or special shim 5, buried under propellant charge 4 and assembled projectile 2. Ammunition assembly starts with gluing the initiating compounds 3 over the thinned bottom 6 of the cartridge-case 1 or over the special shim 5 (selection is mainly based on technological concerns and does not influence ammunition's capacity). Then assembly of the special shim 5 is performed in the thinned bottom 6 of the cartridge-case 1, via press assembly, kerning, carving etc. Gunpowder filling and establishing the projectile in the cartridge-case barrel are performed in the traditional manner. According to the invention, die ammunition works in die following manner: weapon's striker firing pin centrally hits along the axis of the thinned bottom 6 of die cartridge-case 1 and deforms it Initiating compounds 3 is subjected to sharp shrinkage between cartridge-case's thinned bottom 6 and die special shim 5, consequently it ignites and through die oudets (reel slots) of the special shim 5 transfers fie impulse to the propellant charge 4. It also ignites and with the energy of die resulting gunpowder gases gives die projectile 2 the necessary energy.

Bibliograhy:

1. Blagonravov, A A. "Material of small arms", part 1, Moscow, "Oborongiz", 1945.

2. Makarevich, V. E. "Small arms all around the world", Moscow, Saint- Petersburg, "Polygon" 2005.

Claims

Patent claims

1. Centerfire non-capsular ammunition including cartridge-case, projectile, capsule compounds and propellant charge featured with initiating compounds (3) laid over special shim (5) and located between the thinned bottom (6) of the cartridge-case (1) and the special shim (5) that could be of various shapes, as over the special shim the propellant charge (4) is placed, right above projectile is located (2) fixed steadily to the cartridge-case (1).

2. Centerfire non-capsular ammunition according to claim 1 featured with initiating compounds (3) that could be applied right over the thinned bottom (6) of the cartridge-case (1 ).