FI57546C - BANDARTIG CARDING MAGAZINE - Google Patents

Description

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Germany Li it tot as avalt a-Förbunds republi ken Tyskland (DE) P 1678396.3 (71) Hilti Aktiengesellschaft, 9¾9¾ Schaan, Liechtenstein (LI) (72) Hans-Dieter Seghezzi, Vaduz, Karl-Emst Udert, Triesen, Liechtenstein (LI) ), Herbert Rangger, Frastanz, Austria-Österrike (AT) (7¾) Leitzinger Oy (5¾) Ribbon batch magazine - Bandartig kardusmagasin (62) Divided by application 2 ^ 7/68 (patent 53668) -Avdelad frän trap 21-7 / 68 (patent 53 668)

The invention relates to a strip-like cartridge magazine of the type defined in the preamble of claim 1, which is intended for use in particular as a cartridge strip for a bolt gun.

The cartridge magazine of the bolt gun should be formed as a disposable magazine in order to allow the greatest possible ease of working. If the operator has to refill the magazine himself, much of the time saved by using the device with the magazine will be wasted again. It must therefore be assumed that the disposable magazine must be made from the cheapest possible raw material and with the least possible material consumption, without losing the rigidity of the magazine shape. In addition, it is necessary to develop an advantageous shape for injection molding technology, in which case back cuts in particular must be avoided.

Applicant's German application 1,603,841 discloses a gunpowder-powered bolt gun in which a barrel mounted in a housing having a substantially concentric cartridge housing at an end opposite the firing direction is axially displaceable. This bolt gun has a channel extending substantially perpendicular to the main axis to receive the strip-shaped cartridge magazine. The ammunition, after the cartridge magazine is inserted into the channel, is substantially parallel to the main axis of the gun. As the barrel moves against the firing direction, the cartridges located concentrically with the cartridge housing are guided into the cartridge housing. The batch magazine according to this German application publication is formed as a strip-like batch magazine, which is preferably made of plastic and surrounds the bottom pieces of the batches in a form-locked manner. Preferably, the cartridge strip is formed so that as the barrel moves in the firing direction, the cartridge is pulled out of the cartridge housing.

Such an extraction method has substantial advantages. Thus, no special ejection device is required, be it in the form of a lever mechanism which engages behind the bottom edge of the cartridges, or in the form of a pin at the rear end of the working piston. In addition, the handling of the device is simplified because it is no longer necessary to shake the withdrawn cartridge out of the gun. Also, a special ejection opening in the body of the device for empty cartridge sleeves is no longer required.

However, this method of ejection or extraction requires that the cartridges have a tight grip on the cartridge strip so that they do not remain in the cartridge housing as the barrel moves in the firing direction and thus become torn from the strip.

U.S. Patent No. 3,318,245 discloses a tape-like cartridge magazine for toy guns, which does not set specific strength requirements or fitting accuracy for the cartridge housing due to substantially lower explosive forces. In this known strip-like batch magazine, this is manifested e.g. in that between the truncated cone-shaped projections the strip is formed only as a narrow strip on one side edge. In this case, the firing of the cartridges does not take place on the pph side of the strip, which is why the cartridge receiving recesses are closed at the bottom.

French patent publication 1 224 125 discloses a cartridge strip in which the cartridge housing surrounds the areas of the cartridge grooves adjacent to the core bodies of the cartridges, the cartridges being gripped with a compression rigidity. However, this input tape has only a relatively low strength so that it can easily break. In addition, the stakes have a relatively large fitting clearance where they can move so that they can easily be skewed. The cartridge strip also does not cause sealing in the cartridge housing of the gun, but due to the conical protrusions and especially the design of the openings, there is always free space.

3,57546

The object of the invention is to provide a strip-like cartridge magazine of said type in which the cartridges to be ignited from the bottom side are firmly attached and which causes a suitable sealing in the cartridge housing of the gun.

According to the invention, this object is solved in such a way that the cartridge bases are free from the bottom side of the strip and that 1/3 to 2/3 of the height of the insert is surrounded by the strip.

Although French Patent 1,243,495 discloses a single cartridge surrounded by a cartridge cover which remains free on the bottom side, it is not a strip-like cartridge magazine for several projectiles, and the cover surrounding the cartridge does not grip the cartridge at least 1/3 of the height of the cartridge.

Preferred embodiments of the invention appear from the subclaims.

The advantages achieved by the invention are manifested in particular in that, due to the conical shape of the cartridge housing, self-concentration of the cartridges in the cartridge housing is achieved even when the cartridges have not become exactly concentric with the cartridge housing. It is also not possible for the cartridges or the cartridge strip to self-lock in the cartridge housing. Also, the stakes cannot become torn off the streak tape. Thanks to the sealing, backward discharge of the driving gases is also avoided.

In the following, an embodiment of a cartridge strip according to the invention will be described in more detail with reference to the accompanying drawing, in which Fig. 1 shows a side view of a cartridge strip for ten projectiles.

Figure 2 shows a top view of a part of the cartridge strip according to Figure 1.

Fig. 3 shows a section of the cartridge strip of Fig. 2 taken along line III-III on an enlarged scale, and Fig. 4 shows a partial longitudinal section of the cartridge strip of Fig. 2 along line IV-IV, the cartridge being in the cartridge housing of the bolt-gun barrel.

4,57546

In Fig. 1, reference numeral 1 denotes a cartridge strip according to the invention. The strip part 2 has side sections 5 (cf. also Fig. 2) which are gripped by the members which provide the feed movement of the cartridge strip in the gun, as well as openings 6 in which the cartridge bases are located. Above the openings 6 are the strip parts 3 surrounding the cartridge sleeves with openings 4. It can also be seen from Figure 2 that the side cuts 5 are made in the same way on both sides of the strip. This makes it easier to insert the cartridge tape, as it does not matter which end of the tape is inserted inside the gun first. For other details of the bolt gun to be used, in particular the cartridge transfer mechanism and its mode of operation, reference is made to German application 1 603 841.

j A cross-section of the cartridge strip according to Fig. 2 on an enlarged scale along the line III-III is shown in Fig. 3. The conically tapered protrusions 3 of the cartridge strip surround the cartridge sleeves.

The compressive strength of the inserts in the openings 4 of the strip is achieved in such a way that the diameter d of the opening 4 at rest is somewhat smaller than the diameter of the cartridge sleeve. The parts of the cartridge strip adjacent to the side cuts 5 are reinforced as illustrated by the intersection of Figure 4 so as to ensure sufficient rigidity for transporting the cartridge strip. Cheap plastic is preferably used as the input tape material. The necessity and dimensioning of the reinforcement depends on the strength of the material used.

Fig. 4 shows a partial longitudinal section taken along the line IV-IV in Fig. 2 on a larger scale, in which case the cartridge housing 21 arranged at the rear end of the barrel 20 of the bolt gun is also visible. The cartridge strip 1 has a cartridge 10. The bottom 11 of the cartridge is surrounded by the strip-like part 2 of the cartridge strip 1 and the part of the cartridge sleeve adjacent to the bottom is surrounded by the conical part 3 of the cartridge strip. According to Figure 4, the cartridge 10 is located together with the conical protrusion 3 of the cartridge strip in the cartridge housing 21. The cartridge housing is formed at the same cone angle as the cartridge strip protrusion 3. The cone angle is selected so that self-locking of the cartridges in the cartridge housing is avoided. The input switches the input chamber of the barrel 20 moves in the direction of the arrow f, ie i.e.. The firing direction. Reference numeral 22 denotes the rearmost, conical portion of the barrel bore. After ignition, the barrel 20 is moving against the direction of the arrow f will contribute in the sleeve surrounding the input strip 1 drawn out of the batch 5 57 546 housing 21. In this case, does not need any special means for throwing out the charges. There is also no need for a cartridge ejection opening, since the cartridge remains in the cartridge strip and exits as the strip exits through the opening provided for this purpose. The cartridge base 11 should engage the plane of the surface of the ribbon-like portion 2 of the cartridge strip, i.e., practically not extending above the surface of this strip portion 2, so that the closure body not shown in Figure 1 exerts sufficient pressure flammability. In addition, tearing of the base may occur if the cartridge base protrudes from the cartridge housing.

Claims (5)

57546 A strip-like batch magazine, in which the flat side of the strip has truncated cone-shaped protrusions at regular intervals and with openings in the conical axis in which the inserts are placed, characterized in that the insert bases (11) are free from the bottom of the strip (2) and 3 - 2/3 of the height of the insert is tightly surrounded by the strip (2). A strip-like batch magazine according to claim 1, characterized by edge cuts (5) at opposite side edges of the strip (2), arranged at points between the conical projections (3). Strip-shaped batch magazine according to Claim 2, characterized in that the areas of the strip (2) adjacent to the edge cuts (5) are reinforced. Strip-like batch magazine according to one of the preceding claims 1 to 3, characterized in that the edge circumferences of the batch bases (11) are surrounded by a batch strip (1). Strip-like batch magazine according to one of the preceding claims 1 to 3, characterized in that the batch strip (1) is made of plastic.