EP0182532A1 - Cartridge - Google Patents

Cartridge Download PDF

Info

Publication number
EP0182532A1
EP0182532A1 EP85308015A EP85308015A EP0182532A1 EP 0182532 A1 EP0182532 A1 EP 0182532A1 EP 85308015 A EP85308015 A EP 85308015A EP 85308015 A EP85308015 A EP 85308015A EP 0182532 A1 EP0182532 A1 EP 0182532A1
Authority
EP
European Patent Office
Prior art keywords
casing
cartridge
primer
cartridge according
chamber
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Withdrawn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
EP85308015A
Other languages
German (de)
English (en)
French (fr)
Inventor
Eino Kalervo Pulliainen
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.)
Kemira Oyj
Original Assignee
Kemira Oyj
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 Kemira Oyj filed Critical Kemira Oyj
Publication of EP0182532A1 publication Critical patent/EP0182532A1/en
Withdrawn legal-status Critical Current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
    • F42B5/30—Cartridge cases of plastics, i.e. the cartridge-case tube is of plastics

Definitions

  • This invention relates to a cartridge, in particular a blank cartridge and a cartridge for signal light pistols, comprising a plastic casing, a primer and a firing charge, which casing has two chambers, of which one is intended for the firing charge and the other for the primer.
  • the Finnish Patent Specification 28393 discloses blank cartridges of the type described above, having a separate casing base of metal, attached to the tubular rear portion of the plastic casing of which the forward end is closed. In the metallic base portion an annular groove for extracting the casing from the firearm pipe is provided. Owing to said structure such a blank cartridge is durable, however it has the disadvantage of relatively high production costs as a result of the separate base.
  • the Finnish Patent Application 34/71 discloses a cartridge, which comprises a plastic casing, which is divided by a transverse wall perforated with openings into two chambers, of which one is intended for the firing charge and the other for the primer. To the forward portion of the plastic casing a metal bullet has been attached, which proves that this cartridge is intended to be used in shooting with ball cartridges.
  • this cartridge comprises as an essential part a metal ring, which encircles the rear portion of the plastic casing and thus makes it sufficiently firm.
  • the purpose of this invention is to achieve a cartridge with a simpler structure than before, in particular a blank cartridge and a cartridge for signal light pistols which also fulfils the requirements on cartridges with regard to durability and other properties.
  • a blank cartridge is accomplished, which comprises an elongated casing manufactured of a plastic material like polythene, in which there are two chambers, of which one is intended for the firing charge and the other for the primer, and between the chambers there is a transverse wall perforated with openings.
  • the end of the casing is then either closed, e.g. by welding, or a non-metallic bullet has been adapted to its end.
  • the rearward portion of the primer is encircled by a support ring, whereby a corresponding cylindrical cavity is provided at the base of the casing for receiving the support ring. Owing to this structure the primer is firmly lodged in the casing and the support ring makes the base portion of the casing extra durable and prevents it from breaking in the extracting stage.
  • a cartridge for signal light pistols which comprises a cylindrical casing made of a plastic material like polythene, which comprises a first chamber for the primer, and a second chamber for the firing charge, which chambers are separated by a transverse wall perforated with openings, and a third chamber for the luminous mass capsule.
  • the end of the casing is advantageously closed by a separate plug for retaining the luminous mass capsule within the casing.
  • the casing of the blank cartridge has been marked with reference numeral 1.
  • the casing 1 comprises the tubular housing portion 2 of which the end is closed and the base portion 3, in which there is an annular groove 6 for extracting the casing from the pipe of the firearm.
  • the casing 1 is divided by the transverse wall 11 into two chambers 4 and 5, of which the forward chamber 4 is filled with the powder charge.
  • the rearward cylindrical chamber 5 is intended for the primer 8, in which there is a small amount of percussion responsive explosive substance.
  • the transverse wall 11 has an opening, which acts as a flue between the chambers 4 and 5.
  • the entire casing, including the housing portion 2, the base portion 3 and the transverse wall 11 is formed by one integral plastic body, which advantageously is of polythene. Other polymers can evidently also be used.
  • the primer 8 there is a flange portion i.e. a support ring 9 and in the base 3 of the casing there is a corresponding annular cavity for receiving the support ring 9.
  • a flange portion i.e. a support ring 9
  • the support ring 9 makes the base portion 5 of the casing extra solid and prevents it from breaking in the extracting stage of the casing.
  • the blank cartridge illustrated in Figure 2 corresponds to the blank cartridge illustrated in Figure 1, excluding the fact that the forward portion of its tubular housing part 2 is open.
  • a bullet which is of either tree, plastic or some other corresponding material, is attached to the open end of the casing 1.
  • the pipe muzzle of the firearm then has to be provided with a bullet crusher in order to avoid accidents.
  • the assembly of the blank cartridges according to the invention is advantageously accomplished as follows.
  • a casing which has an open end, i.e. a casing having the shape illustrated in Figure 2, is used.
  • the primer 8 is inserted in the cylindrical chamber 5, then the chamber 4 is filled with the powder charge 7 and finally the end of the cartridge is either closed, e.g. by ultrasonic welding (Figure 1) or then the bullet is attached to it ( Figure 2).
  • the casing 12 comprises a cylindrical housing part 13 with an open end, to which has been adapted a luminous mass capsule 20, and the base section 14.
  • the base section 14 of the casing comprises the cylindrical chamber 16, which is intended for the primer 18, in which there is a small amount of percussion responsive explosive substance.
  • the casing comprises a second chamber 15, which is filled with the firing charge 17.
  • the entire casing including the housing section 13, the base section 14 and the transverse walls 22 is formed by one integral plastic body, which advantageously is of polythene. Evidently other polymers can be used as well.
  • a plug 21 for retaining the luminous mass capsule 20 within the casing.
  • the primer 18 has a flange section i.e. a support ring 19 and in the base 14 of the casing a corresponding circular cavity is provided for receiving the support ring 19. As a result of this structure the primer 18 is firmly lodged in the chamber 16.
  • the assembly of the cartridge of the signal light pistol according to the invention is advantageously accomplished by inserting the primer 18 into the cylindrical chamber 16, after which the luminous mass capsule 20 is inserted in the casing and finally the end of the casing is closed by the plug 21.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Toys (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
EP85308015A 1984-11-21 1985-11-05 Cartridge Withdrawn EP0182532A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI844568A FI72388C (fi) 1984-11-21 1984-11-21 Loespatron.
FI844568 1984-11-21

Publications (1)

Publication Number Publication Date
EP0182532A1 true EP0182532A1 (en) 1986-05-28

Family

ID=8519931

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85308015A Withdrawn EP0182532A1 (en) 1984-11-21 1985-11-05 Cartridge

Country Status (4)

Country Link
EP (1) EP0182532A1 (fi)
AU (1) AU5006885A (fi)
FI (1) FI72388C (fi)
NO (1) NO854642L (fi)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998048238A1 (en) * 1997-04-21 1998-10-29 Tomscot Hb Shotgun cartridge case-sleeve and a cartridge made therefrom

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1017924A (fr) * 1950-05-15 1952-12-22 Douille de cartouche
US3292538A (en) * 1964-04-18 1966-12-20 Dynamit Nobel Ag Practice ammunition
US3760729A (en) * 1971-12-21 1973-09-25 Us Army Hermetically sealed plastic cartridge case/cap system
FR2298782A1 (fr) * 1975-01-24 1976-08-20 Gruaz Eric Procede et dispositif pour la fermeture de l'extremite o

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1017924A (fr) * 1950-05-15 1952-12-22 Douille de cartouche
US3292538A (en) * 1964-04-18 1966-12-20 Dynamit Nobel Ag Practice ammunition
US3760729A (en) * 1971-12-21 1973-09-25 Us Army Hermetically sealed plastic cartridge case/cap system
FR2298782A1 (fr) * 1975-01-24 1976-08-20 Gruaz Eric Procede et dispositif pour la fermeture de l'extremite o

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998048238A1 (en) * 1997-04-21 1998-10-29 Tomscot Hb Shotgun cartridge case-sleeve and a cartridge made therefrom
US6305291B1 (en) 1997-04-21 2001-10-23 Tomscot Hb Shotgun cartridge case-sleeve and a cartridge made therefrom

Also Published As

Publication number Publication date
FI844568L (fi) 1986-05-22
NO854642L (no) 1986-05-22
AU5006885A (en) 1986-05-29
FI844568A0 (fi) 1984-11-21
FI72388B (fi) 1987-01-30
FI72388C (fi) 1987-05-11

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE GB NL SE

17P Request for examination filed

Effective date: 19860924

17Q First examination report despatched

Effective date: 19871202

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19890123

RIN1 Information on inventor provided before grant (corrected)

Inventor name: PULLIAINEN, EINO KALERVO