CS219476B1 - Especially for expansion devices - Google Patents

Abstract

Fully combustible cartridge, especially for expansion devices (Fig. 2). The invention relates to fully combustible cartridges, especially for nailing devices. The invention solves the problem of reducing the mechanical energy of the percussion mechanism of the firing mechanism of the nailing device while maintaining high safety of the cartridge. The solution is also advantageous for cartridges with double-sided initiation. The fully combustible cartridge includes a cylindrical cartridge body made of explosive and provided with at least one primer bed, in which the primer composition is stored, the primer bed being formed by a cavity closed by the walls of the cartridge body. At least one front surface of the cartridge body is provided with at least one notch in the diameter of the primer bed to the said front surface of the cartridge body. The said notch, which may be intermittent, defines a closed surface, for example circular, in the front surface. The fully combustible cartridge can be used in all devices working with fully combustible cartridges.

Description

3 4 219476

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fully combustible cartridge, particularly for expansion devices provided with a mechanical firing device.

For example, expansion devices for nailing the nails into walls, which are usually provided with a mechanical launcher, are used for their operation to energize the exothermic reaction of the propellant charge. For a modern expansion device, the cartridge is often designed as a cellular. The basic problems of the function of all-combustible cartridges include their initiation, which is most often carried out mechanically, or electrically, and the like.

The most common types of this all-combustible cartridge, also referred to as propellants, with a mechanical central inflammation are cylindrical in shape with opposed faces, which is made of a solid having the properties of a spinning agent. a shape in which an inflammatory composition is sensitive to the mechanical stimulus. Before the primer is poured out of the recess, which forms the primer bed, and before the effects of a non-inflammatory effect, such as atmospheric moisture, the primer composition is usually protected by a combustible match cap which is glued into the cartridge body for the purpose of closing the seal with the matchstick. -vou folds. Through said cap, when the cartridge is fired, a blow of the firing device of the expansion device is guided through a lump-shaped composition, the cap itself being a relatively thin membrane.

The disadvantage of the described solutions of the all-combustible cartridge is the high performance of the match cap, since in the case of its tightness, the sensitivity in the extreme case is completely reduced due to wetting of the primer. When the match cap is leaked, the person handling the capsules is also considerably threatened, as when the primer or its part is discharged from the cartridge cavity and dispersed over the cartridge or the cartridge. the storage space, undesirable or sudden initiation of the cartridges can occur already during normal handling.

Another disadvantage of the known all-combustible cartridges is that they require an unconditional orientation so as to trigger the source of initiation, for example, the igniter device.

A disadvantage of the above-mentioned flameproofing lamps is also the fact that during combustion of the flameproof cap, stiff deposits often arise which do not pollute the combustion resp. instrument expansion areas.

In order to overcome these drawbacks, a fully-combustible cartridge comprising a cartridge cylindrical body made of a centrifuge and having at least one end face provided with at least one primer receptacle is provided to accommodate the primer when the receptacle is constituted by a closed-cavity cavity. the cartridge body, wherein the cartridge body is comprised of at least two interconnected parts and at least one of them is provided with the primer receptacle.

A disadvantage of this solution of a full-blown lamp is that, for example, in the case of a hard-hearted propellant forming the cartridge body, a non-perfect puncture can occur when the cartridge is fired. deforming the wall of the cartridge body, which may result in failure of the cartridge, or increased performance of the drum firing device.

The above drawbacks are largely eliminated by a fully combustible cartridge, in particular by a pre-expansion device provided with a mechanical firing device, the principle of which is that at least one face of the cartridge body is provided with at least one notch in the projection of the match receptacle of the fired face of the cartridge body . The advantage of a fully combustible cartridge according to the invention is that it has a very well sealed matchstick and can be modified as an all-round double-initiated cartridge. The advantage of the whole-combustible cartridge according to the invention is also that a relatively low energy of the firing device is sufficient to initiate it, while maintaining a high safety of the cartridge. An exemplary embodiment of a fully combustible cartridge according to the invention is shown in the drawing, wherein FIG. 1 shows a front view and FIG.

The fully-combustible cartridge according to the invention, especially designed for expansion devices comprising a mechanical firing device (not shown), comprises a cartridge body 1 having at least one face 2, 2 'which is made of propellant in the form of a solid. a match receptacle 3 for receiving the primer composition 4, and is formed by a cavity 5 closed by the walls 6 of the cartridge body 1. The cartridge body 1 is preferably composed of at least two interconnected portions 7, 7 ', preferably at least one of which is provided with a match receptacle 3. At least one end face 2, 2 ' of the receptacle body 1 is 9, 9 ' with a notch 10, 10 ' in the front surface 2, 2 ' of the cartridge body 1, preferably a closed surface 11, 11 ' To improve the initiation, the match receptacle 3 may be provided with a suitably shaped projection 12.

For example, a fully combustible cartridge according to the invention is inserted into an expansion device directed by a front face 2, 2 ' provided with a bore 10, 10 ' against a source of initiation (not shown), such as a firing pin firing pin. In the impact of said firing pin on a closed surface 11, 11 'bounded by a notch 10, 10', a portion of the wall 6, e.g.

Claims (3)

3 6 219476 with a notch of 10, 10 ’in place, respectively. 10, 10 ’will break off, which will occur when the energy of a not shown object coincides What is claimed is: 1. A fully combustible cartridge, in particular an expansion device, comprising cartridge body cylindrical bodies provided with propellant and provided with at least one primer receptacle in which a primer composition is mounted, wherein the primer receptacle is formed by a cavity enclosed by the housing body walls, indicated by in that the at least one face (2, 2 ') of the cartridge body (1) is in the projection (9, 9') of the primer receptacle (3) into said face (2, 2 ') of the pressing device 4 and thus to initiate it. OF THE INVENTION Forest (1) cartridges provided with at least one punch (10, 10 ') 2. The fully-combustible cartridge according to claim 1, wherein the notch (10, 10 ') is enclosed in a closed surface (11, 11') in the face (2, 2 ') of the cartridge body (1). 3. A fully-combustible cartridge according to claim 2, characterized in that the closed surface (11, 11 ') is circular. 1 sheet of drawings