EP0661515A1 - Endless chain conveyor for an ammunition magazine - Google Patents

Endless chain conveyor for an ammunition magazine Download PDF

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Publication number
EP0661515A1
EP0661515A1 EP94116540A EP94116540A EP0661515A1 EP 0661515 A1 EP0661515 A1 EP 0661515A1 EP 94116540 A EP94116540 A EP 94116540A EP 94116540 A EP94116540 A EP 94116540A EP 0661515 A1 EP0661515 A1 EP 0661515A1
Authority
EP
European Patent Office
Prior art keywords
cartridges
loading
ammunition magazine
strip
loading strip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP94116540A
Other languages
German (de)
French (fr)
Inventor
Michael Gerber
Harry Unternährer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rheinmetall Air Defence AG
Original Assignee
Oerlikon Contraves AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oerlikon Contraves AG filed Critical Oerlikon Contraves AG
Publication of EP0661515A1 publication Critical patent/EP0661515A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/01—Feeding of unbelted ammunition
    • F41A9/04—Feeding of unbelted ammunition using endless-chain belts carrying a plurality of ammunition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/61—Magazines
    • F41A9/64—Magazines for unbelted ammunition
    • F41A9/76—Magazines having an endless-chain conveyor

Definitions

  • the invention relates to an ammunition magazine on an automatic firearm according to the preamble of the claim.
  • Such an ammunition magazine is described in the patent specification CH-A-669 992.
  • the cartridge tips are additionally supported on a projectile guide plate so that there is no high frictional force when the cartridges are ejected from the loading strip (risk of jamming).
  • the conveyor chains are arranged on an inclined plane and the stack is moved downwards when the cartridges are ejected.
  • the projectile guide plate also performs a sawtooth-shaped movement for each loading strip ejection, for which purpose there is a complex mechanism.
  • the invention shows a solution as to how the support function for the cartridges in the lowest loading strip can be realized without using the projectile guide plate and its complex movement mechanism.
  • the support of the cartridges by the conveyor chain in the sleeve shoulder area is advantageous. This means that the support is independent of the shape of the projectile tip and friction losses between the additional support and the cartridges to be ejected are eliminated.
  • an ammunition magazine 10 contains a number of loading strips 11. Each loading strip 11 contains seven cartridges 12. As indicated by arrows A, the loading strips 11 in the ammunition magazine 10 move downwards and, as further indicated by arrows B, the cartridges 12 pushed to the left out of the bottom loading strip 11. Finally, arrows C indicate how the cartridges 12 ejected from the bottom loading strip 11 get through a curved channel 13 from the magazine 10 to the firearm 14, which is only indicated by a rectangle.
  • An endless conveyor chain 15, which is guided around two deflection rollers 16 and 17, is used to move the loading strips 11. Pawls 18 are articulated on this endless conveyor chain 15, which abut against the loading strips 11 to be moved.
  • the bottom loading strip 11 is supported on two screw conveyors 30 and 31, which ensure that when the cartridges 12 are pushed out of the bottom loading strip 11, this loading strip 11 is continuously lowered.
  • two further endless conveyor chains 19 and 20 are used, each of which is guided by two deflection members 21, 22.
  • the endless conveyor chains 19 and 20 are inclined obliquely downward to the left, so that when the cartridges 12 are pushed out of the loading strip 11 in the direction of arrow B, the loading strip 11 can simultaneously lower in the direction of arrow A.
  • the resultant of the two movements in the direction of the arrows A and B corresponds precisely to this inclination of the endless conveyor chains 19 and 20.
  • a further endless conveyor belt 25 which is also referred to as an elevator and which has a number of elevator teeth 26 between which the cartridges 12 are located, is used to transport the cartridges 12 ejected from the lowermost loading strip 11 to the firearm 14 in the curved channel 13.
  • the endless conveyor belt of the elevator 25 is guided around three deflection members 27, 28 and 29.
  • the one conveyor chain 19 is modified for this support function, in that at least some of the individual chain links 40 are increased in height and beveled on their end faces, such that the end faces support surfaces 41 for the cartridges 12 to be ejected during the Form ejection process.
  • FIG. 2 six of the two chain links 40 shown, for example six each, have been modified with corresponding support surfaces 41.
  • the remaining two chain links 40 show the original state, as is still the case for the conveyor chain 20.
  • the cartridges are securely supported and can be precisely conveyed both in the loading strip 11 and on the sleeve shoulder during the ejection process. Due to the accompanying modified chain links 40, there are no additional friction losses between the support surfaces 41 and the cartridges 12 to be ejected.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Vending Machines For Individual Products (AREA)
  • De-Stacking Of Articles (AREA)

Abstract

An ammunition magazine (10) on an automatic firearm contains stacked loading strips (11), which are filled with cartridges (12), and two endless conveyor chains (19, 20) which are arranged inclined with respect to the loading strips (11) and have two drivers (23, 24), in the form of teeth, for gripping the rearmost cartridge (12) in each case in the lowest loading strip (11) and ejecting the cartridges (12) to the firearm. For additional support of the cartridges (12) while interacting with the retention means in the loading strip (11) during an ejection process, at least some of the individual chain links (40) of one conveyor chain (19) are modified in such a manner that its ends now form supporting surfaces (41) for the cartridges (12) which are to be ejected. <IMAGE>

Description

Die Erfindung betrifft ein Munitionsmagazin an einer automatischen Feuerwaffe nach dem Oberbegriff des Patentanspruchs.The invention relates to an ammunition magazine on an automatic firearm according to the preamble of the claim.

Ein solches Munitionsmagazin ist in der Patentschrift CH-A-669 992 beschrieben. Damit beim Ausstossen der Patronen aus dem Ladestreifen keine hohen Reibungskräfte (Verklemmungsgefahr) entstehen, sind die Patronenspitzen zusätzlich auf einer Geschossführungsplatte abgestützt. Um eine kontinuierliche Förderung der Patronen aus dem Ladestreifenstapel in den Elevator zu gewährleisten, sind die Förderketten auf einer schiefen Ebene angeordnet und der Stapel wird beim Ausstossen der Patronen abwärts bewegt. Gleichzeitig führt auch die Geschossführungsplatte pro Ladestreifenausstoss eine sägezahnförmige Bewegung aus, wozu eine aufwendige Mechanik vorhanden ist.Such an ammunition magazine is described in the patent specification CH-A-669 992. The cartridge tips are additionally supported on a projectile guide plate so that there is no high frictional force when the cartridges are ejected from the loading strip (risk of jamming). In order to ensure a continuous conveyance of the cartridges from the stack of loading strips into the elevator, the conveyor chains are arranged on an inclined plane and the stack is moved downwards when the cartridges are ejected. At the same time, the projectile guide plate also performs a sawtooth-shaped movement for each loading strip ejection, for which purpose there is a complex mechanism.

Die Erfindung, gemäss den Merkmalen im Kennzeichen des Patentanspruches, zeigt eine Lösung auf, wie die Stützfunktion für die Patronen im untersten Ladestreifen ohne Verwendung der Geschossführungsplatte und deren aufwendige Bewegungsmechanik realisiert werden kann.The invention, according to the features in the characterizing part of the patent claim, shows a solution as to how the support function for the cartridges in the lowest loading strip can be realized without using the projectile guide plate and its complex movement mechanism.

Vorteilhaft ist die Stützung der Patronen durch die Förderkette im Hülsenschulterbereich. Dadurch ist die Stützung unabhängig von der Geschossspitzenform und Reibungsverluste zwischen der zusätzlichen Abstützung und den auszustossenden Patronen sind eliminiert.The support of the cartridges by the conveyor chain in the sleeve shoulder area is advantageous. This means that the support is independent of the shape of the projectile tip and friction losses between the additional support and the cartridges to be ejected are eliminated.

Ein Ausführungsbeispiel des erfindungsgemässen Munitionsmagazins ist im folgenden anhand der Zeichnungen ausführlich beschrieben. Es zeigt:

Fig.1
eine Seitenansicht des Munitionsmagazins im Schnitt nach Linien I - I in Fig.2.
Fig.2
eine Ansicht im Schnitt nach Linien II - II in Fig.1.
An embodiment of the ammunition magazine according to the invention is described in detail below with reference to the drawings. It shows:
Fig. 1
a side view of the ammunition magazine in section along lines I - I in Fig.2.
Fig. 2
a view in section along lines II - II in Fig.1.

Gemäss Fig. 1 und 2 enthält ein Munitionsmagazin 10 eine Anzahl Ladestreifen 11. Jeder Ladestreifen 11 enthält sieben Patronen 12. Wie durch Pfeile A angedeutet, bewegen sich die Ladestreifen 11 im Munitionsmagazin 10 abwärts und wie ferner durch Pfeile B angedeutet, werden die Patronen 12 nach links aus dem untersten Ladestreifen 11 herausgeschoben. Schliesslich ist durch Pfeile C angedeutet, wie die aus dem untersten Ladestreifen 11 ausgeschobenen Patronen 12 durch einen gebogenen Kanal 13 vom Magazin 10 zur Feuerwaffe 14 gelangen, die nur durch ein Rechteck angedeutet ist. Zum Verschieben der Ladestreifen 11 dient eine endlose Förderkette 15, welche um zwei Umlenkrollen 16 und 17 geführt ist. An dieser endlosen Förderkette 15 sind Klinken 18 angelenkt, welche gegen die zu verschiebenden Ladestreifen 11 stossen. Der unterste Ladestreifen 11 stützt sich auf zwei Förderschnecken 30 und 31 ab, welche dafür sorgen, dass beim Ausschieben der Patronen 12 aus dem untersten Ladestreifen 11, dieser Ladestreifen 11 kontinuierlich abgesenkt wird. Zum Herausschieben der Patronen 12 aus dem untersten Ladestreifen 11 dienen zwei weitere endlose Förderketten 19 und 20, welche um je zwei Umlenkorgane 21, 22 geführt sind. Wie aus Fig.2 ersichtlich ist, sind die endlosen Förderketten 19 und 20 schräg nach links unten geneigt, damit sich beim Ausschieben der Patronen 12 aus dem Ladestreifen 11 in Richtung des Pfeiles B der Ladestreifen 11 gleichzeitig in Richtung des Pfeiles A absenken kann. Die Resultierende der beiden Bewegungen in Richtung der beiden Pfeile A und B entspricht gerade dieser Neigung der endlosen Förderketten 19 und 20. An diesen endlosen Förderketten 19 und 20 sind je zwei Mitnehmer 23 und 24 befestigt, welche jeweils gegen die letzte Patrone 12 eines Ladestreifens 11 stossen, um alle Patronen 12 des Ladestreifens 11 nach links aus dem Ladestreifen 11 herauszuschieben. Zum Transport der aus dem untersten Ladestreifen 11 ausgestossenen Patronen 12 zur Feuerwaffe 14 im gebogenen Kanal 13 dient ein weiteres endloses Förderband 25, das auch als Elevator bezeichnet wird und das eine Anzahl Elevatorzähne 26 aufweist, zwischen denen sich die Patronen 12 befinden. Das endlose Förderband des Elevators 25 ist um drei Umlenkorgane 27, 28 und 29 geführt. Das bisher beschriebene Munitionsmagazin gehört zum Stande der Technik (siehe CH-A-669 992) und ist hier nur soweit erläutert worden, als es zum Verständnis der nachfolgend beschriebenen Erfindung erforderlich ist.1 and 2, an ammunition magazine 10 contains a number of loading strips 11. Each loading strip 11 contains seven cartridges 12. As indicated by arrows A, the loading strips 11 in the ammunition magazine 10 move downwards and, as further indicated by arrows B, the cartridges 12 pushed to the left out of the bottom loading strip 11. Finally, arrows C indicate how the cartridges 12 ejected from the bottom loading strip 11 get through a curved channel 13 from the magazine 10 to the firearm 14, which is only indicated by a rectangle. An endless conveyor chain 15, which is guided around two deflection rollers 16 and 17, is used to move the loading strips 11. Pawls 18 are articulated on this endless conveyor chain 15, which abut against the loading strips 11 to be moved. The bottom loading strip 11 is supported on two screw conveyors 30 and 31, which ensure that when the cartridges 12 are pushed out of the bottom loading strip 11, this loading strip 11 is continuously lowered. To push the cartridges 12 out of the lowest loading strip 11, two further endless conveyor chains 19 and 20 are used, each of which is guided by two deflection members 21, 22. As can be seen from FIG. 2, the endless conveyor chains 19 and 20 are inclined obliquely downward to the left, so that when the cartridges 12 are pushed out of the loading strip 11 in the direction of arrow B, the loading strip 11 can simultaneously lower in the direction of arrow A. The resultant of the two movements in the direction of the arrows A and B corresponds precisely to this inclination of the endless conveyor chains 19 and 20. Two drivers 23 and 24 are fastened to these endless conveyor chains 19 and 20, each against the last cartridge 12 of a loading strip 11 eject all cartridges 12 of the charging strip 11 to the left from the loading strip 11 push out. A further endless conveyor belt 25, which is also referred to as an elevator and which has a number of elevator teeth 26 between which the cartridges 12 are located, is used to transport the cartridges 12 ejected from the lowermost loading strip 11 to the firearm 14 in the curved channel 13. The endless conveyor belt of the elevator 25 is guided around three deflection members 27, 28 and 29. The ammunition magazine described so far is part of the prior art (see CH-A-669 992) and has only been explained here to the extent that it is necessary to understand the invention described below.

Um die Patronen 12 im untersten Ladestreifen 11 möglichst reibungslos aus dem Ladestreifen 11 und präzis zur Feuerwaffe, d.h. hier in den Elevator 25 fördern zu können, ist es notwendig, die sieben Patronen 12 während des Ausstossvorganges zusätzlich zu stützen. Erfindungsgemäss wird dies dadurch erreicht, dass die eine Förderkette 19 für diese Stützfunktion modifiziert wird, indem mindestens ein Teil der einzelnen Kettenglieder 40 in der Höhe vergrössert und an ihren Stirnseiten abgeschrägt sind, derart, dass die Stirnseiten Unterstützungsflächen 41 für die auszustossenden Patronen 12 während des Ausstossvorganges bilden. Gemäss Fig.2 sind beispielsweise von den dargestellten zweimal sieben einzelnen Kettengliedern 40 je sechs davon mit entsprechenden Unterstützungsflächen 41 modifiziert worden. Die restlichen zwei Kettenglieder 40 zeigen den ursprünglichen Zustand auf, wie dies auch für die Förderkette 20 weiterhin zutrifft. Somit sind die Patronen während des Ausstossvorganges sowohl im Ladestreifen 11 wie auch an der Hülsenschulter sicher abgestützt und präzis förderbar. Durch die mitlaufenden modifizierten Kettenglieder 40 entstehen keine zusätzlichen Reibungsverluste zwischen den Unterstützungsflächen 41 und den auszustossenden Patronen 12.In order to move the cartridges 12 in the bottom loading strip 11 as smoothly as possible from the loading strip 11 and precisely to the firearm, i.e. To be able to convey here into the elevator 25, it is necessary to additionally support the seven cartridges 12 during the ejection process. According to the invention, this is achieved in that the one conveyor chain 19 is modified for this support function, in that at least some of the individual chain links 40 are increased in height and beveled on their end faces, such that the end faces support surfaces 41 for the cartridges 12 to be ejected during the Form ejection process. According to FIG. 2, six of the two chain links 40 shown, for example six each, have been modified with corresponding support surfaces 41. The remaining two chain links 40 show the original state, as is still the case for the conveyor chain 20. Thus, the cartridges are securely supported and can be precisely conveyed both in the loading strip 11 and on the sleeve shoulder during the ejection process. Due to the accompanying modified chain links 40, there are no additional friction losses between the support surfaces 41 and the cartridges 12 to be ejected.

Claims (1)

Munitionsmagazin (10) an einer automatischen Feuerwaffe (14), enthaltend gestapelte, mit Patronen (12) gefüllte Ladestreifen (11) und zwei endlose, zu den Ladestreifen (11) geneigt angeordnete Förderketten (19, 20) mit zwei zahnförmigen Mitnehmern (23, 24) zum Erfassen jeweils der hintersten Patrone (12) im untersten Ladestreifen (11) und Ausstossen der Patronen (12) zur Feuerwaffe, dadurch gekennzeichnet, dass mindestens ein Teil der einzelnen Kettenglieder (40) der einen Förderkette (19) in der Höhe vergrössert und an ihren Stirnseiten Unterstützungsflächen (41) für die auszustossenden Patronen (12) aufweisen.Ammunition magazine (10) on an automatic firearm (14), containing stacked loading strips (11) filled with cartridges (12) and two endless conveyor chains (19, 20) inclined to the loading strips (11) with two tooth-shaped carriers (23, 24) for grasping the rearmost cartridge (12) in the bottom loading strip (11) and ejecting the cartridges (12) into a firearm, characterized in that at least some of the individual chain links (40) of the one conveyor chain (19) are increased in height and have support surfaces (41) on their end faces for the cartridges (12) to be ejected.
EP94116540A 1993-12-20 1994-10-20 Endless chain conveyor for an ammunition magazine Withdrawn EP0661515A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3791/93 1993-12-20
CH379193 1993-12-20

Publications (1)

Publication Number Publication Date
EP0661515A1 true EP0661515A1 (en) 1995-07-05

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ID=4263546

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94116540A Withdrawn EP0661515A1 (en) 1993-12-20 1994-10-20 Endless chain conveyor for an ammunition magazine

Country Status (4)

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EP (1) EP0661515A1 (en)
JP (1) JPH07253294A (en)
CN (1) CN1129800A (en)
ZA (1) ZA949750B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113825971A (en) * 2019-05-22 2021-12-21 约翰考克利尔防御股份公司 Device for ejecting ammunition chain

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102564220B (en) * 2012-01-20 2013-12-11 浙江大学 Automatic bullet sorting and assembling device
CN102538575B (en) * 2012-03-07 2013-12-11 浙江大学 Automatic bullet assembly system based on magnetic synchronous belt and pneumatic device
CN110906782B (en) * 2019-12-12 2021-08-10 山东大学 Method and system for controlling chain type automatic magazine input dead zone with unknown parameters
CN115060112B (en) * 2022-06-22 2023-05-12 重庆科技学院 Bullet quick automatic clamping mechanism

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2024672A1 (en) * 1969-05-22 1970-11-26 General Electric Co., Schenectady, N.Y. (V.St.A.) Ammunition delivery system
CH669992A5 (en) * 1986-04-10 1989-04-28 Oerlikon Buehrle Ag

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2024672A1 (en) * 1969-05-22 1970-11-26 General Electric Co., Schenectady, N.Y. (V.St.A.) Ammunition delivery system
CH669992A5 (en) * 1986-04-10 1989-04-28 Oerlikon Buehrle Ag

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113825971A (en) * 2019-05-22 2021-12-21 约翰考克利尔防御股份公司 Device for ejecting ammunition chain

Also Published As

Publication number Publication date
CN1129800A (en) 1996-08-28
ZA949750B (en) 1995-08-17
JPH07253294A (en) 1995-10-03

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