EP0656522B1 - Douille pour cartouche - Google Patents

Douille pour cartouche Download PDF

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Publication number
EP0656522B1
EP0656522B1 EP94118834A EP94118834A EP0656522B1 EP 0656522 B1 EP0656522 B1 EP 0656522B1 EP 94118834 A EP94118834 A EP 94118834A EP 94118834 A EP94118834 A EP 94118834A EP 0656522 B1 EP0656522 B1 EP 0656522B1
Authority
EP
European Patent Office
Prior art keywords
capsule
ignition
extension
side wall
anvil
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.)
Expired - Lifetime
Application number
EP94118834A
Other languages
German (de)
English (en)
Other versions
EP0656522A1 (fr
Inventor
Friedrich Müller
Heinz Riess
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.)
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
Original Assignee
Dynamit Nobel AG
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
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
Priority claimed from DE4341002A external-priority patent/DE4341002A1/de
Application filed by Dynamit Nobel AG, Dynamit Nobel GmbH Explosivstoff und Systemtechnik filed Critical Dynamit Nobel AG
Publication of EP0656522A1 publication Critical patent/EP0656522A1/fr
Application granted granted Critical
Publication of EP0656522B1 publication Critical patent/EP0656522B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/26—Cartridge cases
    • F42B5/36—Cartridge cases modified for housing an integral firing-cap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/08—Primers; Detonators
    • F42C19/10—Percussion caps

Definitions

  • the invention relates to a cartridge case, in particular for Shooting in small arms, according to the generic term of the Claim 1.
  • FIG. 1 is the average of the rear end of a cartridge case according to the prior art with inserted primer (Fig. 1) and after the ignition (Fig. 2) shown.
  • a cylindrical sleeve 1 is on its rear face with a ignition bell designed as a cylindrical recess 4 provided. Open into the top of the ignition bell 4 Ignition channels 11 in the with a propellant charge, not shown Inside the sleeve 1 are connected. In the ignition bell 4 a primer is inserted flush.
  • the primer consists of a cup-shaped capsule 6 with a capsule base and a cylindrical side wall. Inside the capsule 6 an ignition charge 2 is pressed onto the capsule bottom. Above the ignition charge 2 is an anvil 8 with openings for the fumes. Via ring riveting 3 the primer is anchored in the sleeve 1.
  • cartridge cases that are fired in handguns must have a gas tightness in the direction of the weapon breech in order to endanger the Protect or safely prevent gun damage.
  • Particularly pollutant-free Primers are more gas-rich than the previous particles and some contain pollutants. This results in the weft development in the area of Ignition bell significantly higher gas pressures with a very short pressure increase. This can lead to gas leakage in the area of the primer, what especially in unlocked weapons with bulk lock and rigidly attached Firing pin is observed.
  • This gas outlet is indicated by way of example in FIG. 2.
  • the material of the capsule base is very plastically deformed in the critical area 7, between the fixed anvil 8 of the primer and the firing pin 5, which cannot move back due to its rigid connection to the closure at the moment of ignition. Due to the high gas pressure of the pollutant-free primer cap, the material of the capsule base can be stressed beyond the limit of elongation at break (constriction fracture) in area 7, which can then lead to gas escaping in the direction of the weapon breech or to migration of the primer cap and thus to a leak or one Blower ".
  • Cartridge casings are shown in US Pat. No. 3,306,203 and EP 0 461 095 A1 Ignition bell in the area of the side wall have a radial extension. This However, expansion does not lead to a reduction in tensions in the critical area of the capsule bottom.
  • DE-C-73 301 describes a cartridge case, especially for shooting in Small arms, with a cylindrical recess in their base Ignition bell, in the top of which at least one ignition channel opens, with an in the primer flush with the primer cap with a cup-shaped capsule, which consists of a capsule bottom and a cylindrical side wall, and with in Ignition charge and anvil arranged inside the capsule, the ignition bell in the area of the side wall of the capsule with an annular circumferential extension is provided.
  • a disadvantage of this known cartridge case is that the cup-shaped capsule is not in the annular enlargement can be pressed because after the ignition charge has ignited immediately a pressure equalization between the interior of the capsule and the annular Expansion takes place.
  • the invention has for its object a cartridge case, in particular for Firing in small arms, with a cylindrical recess in the bottom trained ignition bell to create at least one ignition channel in the top opens, with a primer plug flush with the ignition bell Cup-shaped capsule, which consists of a capsule base and a cylindrical side wall exists, and with the ignition charge and anvil arranged inside the capsule, at which significantly reduces the stresses in the critical area of the capsule bottom be that no material constrictions occur and the deformations in the material of the capsule bottom remain within the range of the plastic stretch, whereby the gas tightness in the direction of the weapon rifle, especially with gas rich and Ignition charges free of harmful substances are significantly improved.
  • this object is achieved in that the ignition bell in the area the side wall of the capsule with an annular circumferential extension is so that the anvil after ignition of the charge and expansion of the capsule Has space to dodge and that between the extension and the top of the Ignition bell arranged a stop for the end of the cylindrical side wall of the capsule is.
  • the cartridge case according to the invention is not only suitable for handguns, but also for submachine guns, rifles or the like
  • the extension is that adjacent to the top of the ignition bell Area arranged so that the pressure on the capsule bottom away free end of the capsule can escape into the extension.
  • the cross section is preferably wedge-shaped or conical. However, other shapes are also possible, such as. B. a round profile, a triangular profile or other geometries.
  • the greatest depth of extension is according to the invention provided in the area adjacent to the top of the ignition bell.
  • the stop therefore serves as a guide for the free end of the Sidewall and as overflow protection in the initial phase of ignition, so that it is guaranteed that the pressure in the extension is always lower than the pressure in the capsule and thus a perfect expansion of the side wall is possible.
  • the extension advantageously encloses almost half the length of the side wall.
  • FIGS 1 and 2 show the prior art (see introduction to the description).
  • Fig. 3 shows in section a cartridge case according to the invention before the ignition of the Primer.
  • a cylindrical sleeve 1 is at its bottom end, which too one in this Figure not shown firing pin is turned with a provided with a cylindrical recess, the ignition bell 4 forms.
  • Ignition channels open into the top of the ignition bell 4 11 with a propellant charge, not shown, inside the Connect sleeve 1.
  • the primer or igniter consists of a Cup-shaped capsule 6 with a capsule base and one cylindrical side wall.
  • the opening of the capsule 6 is to the Ignition channels 11 turned.
  • the cover 12 can e.g. a lacquer coating or a film.
  • An anvil sits on the ignition charge 2 or the cover 12 8 on.
  • This anvil 8 is described in more detail in FIG. 5.
  • the anvil 8 is a separate component, i.e. Not integrally formed with the sleeve 1 and lies with his
  • the outer surface is complete except for openings or recesses on the inner surface of the side wall of the capsule 6.
  • the anvil 8 is supported on the one hand in the longitudinal direction of the sleeve 1 on the top of the ignition bell 4 and on the other hand the ignition charge 2.
  • the openings in the anvil 8 are like this arranged that the fumes to the ignition channels 11th can reach.
  • the ignition bell 4 is in the area of the side wall the capsule 6 is provided with an extension 9.
  • Fig. 3 shows an embodiment in which the extension 9 in Cross-section is wedge-shaped or conical. The greatest depth of extension 9 - in the radial direction viewed - is on the top of the ignition bell 4 intended. The top surface is the front surface of the ignition bell 4 meant, in which the ignition channels 11 open.
  • the extension 9 represents a circumferential undercut of the Ignition bell 4, which acts as a radial escape space, free space, Extension space or undercut for the side wall of the Capsule 6 and thus also for the anvil 8 acts.
  • the extension 9 is from the top of the ignition bell 4 set back somewhat axially towards the bottom of the capsule 6, so that between the extension 9 and the top of the ignition bell 4 a stop 10 for the front free end of the cylindrical side wall of the capsule 6 is formed.
  • the Stop 10 serves as a guide for the free end of the Sidewall and as a flow protection in the initial phase of Ignition, so that it is ensured that the pressure in the Extension 9 is always less than the pressure in the capsule 6 and thus a perfect expansion of the side wall possible is.
  • the extension 9 extends over almost half the axial length of the side wall of the capsule 6.
  • Fig. 5 shows a known and in section and top view Primers.
  • the primer is with that shown in Fig. 3 identical.
  • the openings are in the top view 13 can be seen in the anvil 8, via which the ignition vapor is too the ignition channels 11 (see Fig. 3).
  • a firing pin 5 has the capsule bottom of the capsule 6 pressed in and remains in the case of a rigid, firmly connected Firing pin 5 are in this position. This is the case in unlocked weapons with mass lock.
  • the ignition charge arranged between the capsule bottom and anvil 8 2 was ignited by the impact of the firing pin 5.
  • the deformation of the capsule base by the firing pin 5 causes the free end of the side wall of the capsule 6 of the top of the ignition bell 4 or the stop 10 in Is pulled towards the capsule bottom.
  • the end can be in dodge extension 9.
  • the anvil 8, the firing pin 5 or the capsule bottom is strongly deformed thereby expanding radially, causing its height in the longitudinal direction is reduced and so be the firing pin 5 opposite
  • the area can move forward, so to speak. in the Capsule bottom, in the area of reference numeral 7 ', thus arise no such high loads that lead to a break of the Capsule bottom would lead.
  • the gas tightness towards This results in a weapon lock.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Furnace Charging Or Discharging (AREA)

Claims (4)

  1. Douille de cartouche, notamment destinée à être tirée dans une arme à feu portative, comprenant une calotte d'amorçage (4) agencée sous la forme d'une cavité cylindrique dans son fond, dans la face supérieure de laquelle débouche au moins un canal d'amorçage (11), une capsuleamorce insérée sans jeu dans la calotte d'amorçage (4) avec une capsule (6) en forme de coupelle comprenant un fond de capsule et une paroi latérale cylindrique, ainsi qu'une charge d'amorçage (2) et une enclume (8) disposées à l'intérieur de la capsule (6), caractérisée par le fait que la calotte d'amorçage (4), dans la région de la paroi latérale de la capsule (6), comporte un élargissement (9) annulaire tel, que l'enclume (8), après allumage de la charge d'amorçage (2) et épanouissement de la capsule (6) dispose de la place nécessaire à son déplacement et par le fait qu'une butée (10) pour l'extrémité de la paroi cylindrique de la capsule (6) est aménagée entre l'élargissement (9) et la face supérieure de la calotte d'amorçage (4).
  2. Douille de cartouche selon la revendication 1, caractérisée par le fait que l'élargissement (9) est disposé dans la zone contigue à la face supérieure de la calotte d'amorçage (4).
  3. Douille de cartouche selon la revendication 1 ou 2, caractérisée par le fait que l'élargissement (9), en section transversale, a une forme de coin et que la plus grande profondeur de l'élargissement se situe dans la zone contiguë à la face supérieure de la calotte d'amorçage (4).
  4. Douille de cartouche selon une des revendications 1 à 3, caractérisée par le fait que l'élargissement (9) s'étend pratiquement sur la moitié de la longueur de la paroi latérale de la capsule (6).
EP94118834A 1993-12-01 1994-11-30 Douille pour cartouche Expired - Lifetime EP0656522B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4340998 1993-12-01
DE4340998 1993-12-01
DE4341002 1993-12-02
DE4341002A DE4341002A1 (de) 1993-12-01 1993-12-02 Patronenhülse

Publications (2)

Publication Number Publication Date
EP0656522A1 EP0656522A1 (fr) 1995-06-07
EP0656522B1 true EP0656522B1 (fr) 2000-03-01

Family

ID=25931695

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94118834A Expired - Lifetime EP0656522B1 (fr) 1993-12-01 1994-11-30 Douille pour cartouche

Country Status (3)

Country Link
US (1) US5481978A (fr)
EP (1) EP0656522B1 (fr)
AT (1) ATE190132T1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3989563B2 (ja) * 1995-09-22 2007-10-10 ダイセル化学工業株式会社 エアバッグ用ガス発生器
AU2574899A (en) * 1998-02-05 1999-08-23 Olin Corporation Cartridge case
US6959647B2 (en) * 1999-10-25 2005-11-01 Mark A. Wistrom Cartridge for a firearm
US6367389B1 (en) * 1999-10-25 2002-04-09 Mark A. Westrom Cartridge for a firearm
US6360666B1 (en) * 2000-06-06 2002-03-26 Alliant Techsystems Inc. Alignment fixture
US7210260B1 (en) 2000-09-28 2007-05-01 Robert B. Smalley, Jr. Firearm cartridge and case-less chamber
US7086336B2 (en) * 2000-09-28 2006-08-08 Superior Ballistics, Inc. Firearm cartridge and case-less chamber
US7546805B2 (en) * 2001-07-17 2009-06-16 Schlumberger Technology Corporation Detonator
US7165496B2 (en) * 2003-11-06 2007-01-23 Reynolds S Paul Piston head cartridge for a firearm
US7581344B2 (en) * 2004-12-22 2009-09-01 Armalite, Inc. Weapon extractor and cartridge
US7841279B2 (en) * 2006-05-24 2010-11-30 Reynolds George L Delayed extraction and a firearm cartridge case
US8424646B2 (en) * 2006-07-10 2013-04-23 United Technologies Corporation Interruption tolerant lubrication system
US9267772B2 (en) * 2012-06-27 2016-02-23 Aai Corporation Ballistic sealing, component retention, and projectile launch control for an ammunition cartridge assembly
US20170328689A1 (en) * 2016-05-11 2017-11-16 U.S. Government As Represented By The Secretary Of The Army Lightweight Cartridge Case
US10976144B1 (en) 2018-03-05 2021-04-13 Vista Outdoor Operations Llc High pressure rifle cartridge with primer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE73301C (de) * O. BÖKLEN in Lauffen a. Neckar Patronenhülse mit nach vorn erweiterter Zündhütchenkammer
US431601A (en) * 1890-07-08 Wilhelm lorenz
IT649629A (fr) * 1960-04-27
US4173186A (en) * 1960-07-07 1979-11-06 The United States Of America As Represented By The Secretary Of The Army Ammunition
SE465978B (sv) * 1990-06-06 1991-11-25 Bofors Ab Slagstiftsinitierad taendare foer artilleriammunition

Also Published As

Publication number Publication date
ATE190132T1 (de) 2000-03-15
EP0656522A1 (fr) 1995-06-07
US5481978A (en) 1996-01-09

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