EP0430918A2 - Kammer eines Anzünders einer Patronenhülse - Google Patents

Kammer eines Anzünders einer Patronenhülse Download PDF

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Publication number
EP0430918A2
EP0430918A2 EP90870230A EP90870230A EP0430918A2 EP 0430918 A2 EP0430918 A2 EP 0430918A2 EP 90870230 A EP90870230 A EP 90870230A EP 90870230 A EP90870230 A EP 90870230A EP 0430918 A2 EP0430918 A2 EP 0430918A2
Authority
EP
European Patent Office
Prior art keywords
anvil
cylindrical
central body
envelope
wings
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Withdrawn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
EP90870230A
Other languages
English (en)
French (fr)
Other versions
EP0430918A3 (en
Inventor
Félix-Victor Maes
Jeanpaul Lechanteur
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0430918A2 publication Critical patent/EP0430918A2/de
Publication of EP0430918A3 publication Critical patent/EP0430918A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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 present invention relates to a primer chamber for a central percussion firearm cartridge.
  • a primer chamber consists of a bowl intended to receive the primer capsule and it is housed in the bottom of the cartridge case.
  • a common type of primer chamber is made up of two parts: a cylindrical casing and an anvil intended to resist the impact of the percussion member of a firearm.
  • the anvil is an integral part of the cylindrical envelope and the initiation chamber is made in one piece.
  • the anvil has a body of tapered shape, conical or pyramidal for example, terminated by a flat end.
  • the lower part of the anvil body, which is connected to the cylindrical envelope, is pierced with several vent holes arranged on the periphery of the anvil with a predetermined angular spacing between them. These vents are used to let pass the heat produced by the explosion of the primer under the effect of percussion in order to communicate it to the powder contained in the cartridge case to cause the propulsion of the projectile.
  • the object of the present invention is to overcome the aforementioned shortcomings of the known initiation chambers and to produce an initiation chamber capable of transmitting sufficiently concentrated heat to the powder charge towards the center of the base of the sleeve so that the powder can ignite quickly.
  • a primer chamber comprising an anvil which is an integral part of the cylindrical envelope, which primer chamber is remarkable in that the anvil has a flattened central body which extends parallel to an axial plane of the envelope, and in that the bottom of the cylindrical envelope on either side of the anvil has vent holes creating passages for the priming heat in the vicinity of the plane axial of the cylindrical envelope.
  • the central body ends in two wings which have a tapered profile in their upper part and are connected to the top of the central body by forming a relatively flat end, the lower part of the wings being connected to the cylindrical envelope forming a part integral with it.
  • Figure 1 is a plan view of an exemplary embodiment of the boot chamber according to the invention.
  • Figure 3 is an axial section along line III-III of Figure 1.
  • FIGS. 4 and 5 represent an alternative embodiment of the priming chamber shown in FIGS. 1 to 3.
  • FIG. 1 we see a cylindrical envelope 11 closed by a bottom 12 stamped to form an anvil 13 extending towards the inside of the envelope 11.
  • the anvil B is formed with a central body 18 flattened extending parallel to an axial plane AA of the casing 11 (see FIG. 2).
  • Two vents 14 are formed in the flat parts of the bottom which are connected to the cylindrical casing 11.
  • the central body 18 ends in two wings 19 which have a tapered profile in their upper part (see FIG. 3) and are connected to the top of the central body 18 by forming a relatively flat end 15.
  • the lower part 16 of the wings 19 is connected to the cylindrical casing 11 forming an integral part with this one.
  • the drawing clearly shows that, thanks to the flattened shape of the anvil according to the invention, the vents 14 can be brought closer to the axial plane AA of the cylindrical envelope 11. They thus form passages for contiguous heat flows which concentrate the priming heat on the central part of the base of the socket containing the powder charge. This concentration of the heat imparted to the charge of the powder of a cartridge guarantees rapid ignition of the powder, which ensures that the projectile mounted in the head of the cartridge has an optimal propulsion speed.
  • FIG. 4 An alternative embodiment of the priming chamber according to the invention is shown in Figures 4 and 5.
  • the anvil 13 is identical to that shown in Figures 2 and 3.
  • the part bottom of the central body 13A of the anvil has a cutout 17 which connects the vents 14 and thus forms a central vent hole for the priming heat, which adds to the effect of desired heat concentration.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Insertion Pins And Rivets (AREA)
  • Surgical Instruments (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Toys (AREA)
EP19900870230 1989-11-29 1990-11-28 Primer chamber for a firearm cartridge Withdrawn EP0430918A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE8901275A BE1003763A3 (fr) 1989-11-29 1989-11-29 Chambre d'amorce pour une cartouche d'arme a feu.
BE8901275 1989-11-29

Publications (2)

Publication Number Publication Date
EP0430918A2 true EP0430918A2 (de) 1991-06-05
EP0430918A3 EP0430918A3 (en) 1991-11-21

Family

ID=3884411

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900870230 Withdrawn EP0430918A3 (en) 1989-11-29 1990-11-28 Primer chamber for a firearm cartridge

Country Status (8)

Country Link
US (1) US5148749A (de)
EP (1) EP0430918A3 (de)
CN (1) CN1027395C (de)
BE (1) BE1003763A3 (de)
CA (1) CA2031022A1 (de)
CS (1) CS595590A3 (de)
RU (1) RU1838752C (de)
ZA (1) ZA909471B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6502514B1 (en) 2001-09-12 2003-01-07 Christopher A. Holler Firearm cartridge having a plurality of ignition primer chambers and associated methods for reducing the likelihood of misfire and cold shot and enhancing rapid and reliable firing

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT628995A (de) *
US932562A (en) * 1907-08-26 1909-08-31 Peters Cartridge Company Shell.
US3195463A (en) * 1962-07-19 1965-07-20 Remington Arms Co Inc Die cast battery cup and anvil
DE1932140A1 (de) * 1969-06-25 1971-01-14 Dynamit Nobel Ag Patronenzuendung und Verfahren zu ihrer Herstellung
FR2214101A1 (de) * 1973-01-12 1974-08-09 Manuf Generale Munitions
BE831139A (fr) * 1975-07-08 1975-11-03 Chambre d'amorce pour cartouche
FR2355272A1 (fr) * 1976-06-03 1978-01-13 Manuf Gle Munitions Dispositif d'amorcage pour munitions et analogues
US4315462A (en) * 1979-09-10 1982-02-16 Vollers Gary L Shot gun shell primer

Also Published As

Publication number Publication date
ZA909471B (en) 1992-03-25
EP0430918A3 (en) 1991-11-21
RU1838752C (ru) 1993-08-30
CN1054307A (zh) 1991-09-04
BE1003763A3 (fr) 1992-06-09
CN1027395C (zh) 1995-01-11
CS595590A3 (en) 1992-03-18
CA2031022A1 (en) 1991-05-30
US5148749A (en) 1992-09-22

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