US3682097A - Firearm cartridge - Google Patents

Firearm cartridge Download PDF

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Publication number
US3682097A
US3682097A US855936A US85593669A US3682097A US 3682097 A US3682097 A US 3682097A US 855936 A US855936 A US 855936A US 85593669 A US85593669 A US 85593669A US 3682097 A US3682097 A US 3682097A
Authority
US
United States
Prior art keywords
cartridge
propulsion charge
charge
propulsion
washer
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
US855936A
Other languages
English (en)
Inventor
Gad Anders Rausing
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.)
Tetra Pak Developpement SA
Original Assignee
LADCO ENTERPRISES Ltd
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 LADCO ENTERPRISES Ltd filed Critical LADCO ENTERPRISES Ltd
Application granted granted Critical
Publication of US3682097A publication Critical patent/US3682097A/en
Assigned to TETRA PAK DEVELOPPEMENT SA reassignment TETRA PAK DEVELOPPEMENT SA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: LADCO ENTERPRISES LTD.
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
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/18—Caseless ammunition; Cartridges having combustible cases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S102/00—Ammunition and explosives
    • Y10S102/70—Combustilbe cartridge

Definitions

  • This invention relates to a firearm cartridge, comprising bullet and propulsion charge.
  • the propulsion charge is usually contained in a cartridge case of metal, cardboard, plastic or some other similar material.
  • the propulsion charge is usually contained in a cartridge case of metal, cardboard, plastic or some other similar material.
  • the said end wall which is usually made of metal, also has an important duty as a gastight seal between the breech and the bolt, in order to prevent flashback when the bullet is fired. It is quite natural that this duty to act as a seal is very important, since the flashback which may arise if there were no seal may easily injure the person firing the weapon and/or affect the working and life of the mechanism.
  • the self-exploding cartridges available are certainly very efficient from the point of view of forming a gastight seal and are convenient to handle, but they have the drawback that they are comparatively expensive and that the case which remains in the chamber after firing must be removed before a new cartridge can be inserted.
  • a very high proportion of the cost of the cartridge is due to the cost of the case. If the case can be eliminated, the cartridge can be made considerably cheaper and naturally also lighter, and the absence of the case means that the mechanism of automatic weapons can be made simpler and lighter, since there is no need for an extractor to withdraw the case from the chamber after the bullet has been fired.
  • the cartridge can also be made shorter which in turn makes possible a shorter and lighter mechanism and a higher firing rate.
  • the propulsion charge consists of a moulded, preferably cylindrical, body of an explosive material, for instance powder, into which body there is affixed a bullet, and by the fact that the said preferably cylindrical body exhibits a ringshaped or washer-shaped sealing device which surrounds the end of the propulsion charge, which device entirely consists of a combustible material.
  • the cartridge shown in the FIGURE consists of a propulsion charge 1 made up of a moulded body of powder.
  • the bullet is denoted 2 and the rear anchorage of the bullet by 5.
  • the sealing device is denoted 3 and the primer 4.
  • the powder material is moulded in a mould that has been made to fit the shape of the chamber of the weapon in which the cartridge is to be used.
  • the propulsion charge 1 is in a suitable manner joined onto the bullet 2 which may at its rear end have a dovetail anchorage, by means of which the bullet 2 can be embedded in the propulsion charge 1.
  • the propulsion charge 1 is also formed at its rear end in such a way that the sealing device 3, produced in a separate operation, can be fitted into the propulsion charge.
  • the sealing device 3 consists in the version shown of a washer-shaped end portion with a flange 6 and a central hole.
  • the sealing device 3 may for instance be made of nitrocellulose or some other easily combustible material which is yet comparatively stable mechanically.
  • the primer 4 situated at the central part of the sealing device 3 consists of a primer containing a charge that is ignited by a firing pin being thrown against the wall of the primer 4.
  • a conventional primer both the anvil and the case are made of metal.
  • primers for cartridges of the type in accordance with the invention they are made from an entirely combustible material with a combustion time the same as, or shorter than, that of the charge material.
  • the seal and the primer can be made in one piece. lgnition can also take place in some other way, e.g., by means of compressed air or an electrical primer which directly actuates the propulsion charge.
  • the cartridge in accordance with the drawing When the cartridge in accordance with the drawing is to be fired, it is first placed in the chamber, which has been adapted to fit the cartridge, of a weapon.
  • the cartridge and naturally the chamber of the weapon also are slightly conical, but it is naturally also possible to have a cylindrical chamber.
  • the propulsion charge 1 is ignited and undergoes rapid combustion, whereupon a high pressure develops in the chamber.
  • This high pressure has the effect that the sealing device 3 is forced backwards against the rear wall of the chamber and that the bullet 2 is ejected through the barrel of the weapon.
  • the propulsion charge 1 is naturally not consumed instantaneously, and generally speaking combustion of the propulsion charge proceeds the whole time that the bullet 2 is inside the barrel, and owing to the increasing pressure, the bullet is accelerated so as to reach its maximum velocity at the muzzle. After the bullet has left the barrel, the pressure in the barrel and chamber will naturally drop.
  • the sealing device 3 is made from a combustible material, combustion of the sealing device commences simultaneously with ignition of the propulsion charge 1.
  • the combustion times of the propulsion charge 1 and the sealing device 3 respectively are however adjusted in such a way that the sealing action of the sealing device is maintained during the whole of the combustion time of the propulsion charge 1, which time is however very short.
  • the dimensions of the sealing device 3, i.e., preferably its thickness, must be adapted to the combustion velocity of the material in such a way that complete combustion of the sealing device 3 does not take place before the propulsion charge 1 has completely burned away or the bullet has left the barrel.
  • sealing devices of the above type which are completely burned 0.001 0.5 second after the bullet has been fired, whereby the sealing device, despite the short combustion time, will have been able to exercise the required sealing action so that there is no flashback when the bullet is tired.
  • a firearm cartridge comprising a propulsion charge of explosive material molded in the form of a body having a substantially circular cross section, a bullet element affixed to the forward end of said body for propulsion thereby, a washer-like sealing means at the opposite end of said body, said washer-like sealing means being composed of a combustible material having a burning rate slower than the burning rate of said propulsion charge to provide a sealing action during the entire burning of said propulsion charge and thus prevent flashback and be consumed by its own combustion, and primer means for igniting the propulsion charge.
  • a cartridge as claimed in claim 1 wherein said primer means comprises a primer cap disposed centrally of said washer-like sealing means.
  • a cartridge as claimed in claim 1 wherein the washer-like sealing means is composed of a combustible material which will be completely burned away in 0.001 to 0.5 seconds after ignition of said propulsion charge.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Air Bags (AREA)
US855936A 1968-10-14 1969-09-08 Firearm cartridge Expired - Lifetime US3682097A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE13799/68A SE324301B (ja) 1968-10-14 1968-10-14

Publications (1)

Publication Number Publication Date
US3682097A true US3682097A (en) 1972-08-08

Family

ID=20298001

Family Applications (1)

Application Number Title Priority Date Filing Date
US855936A Expired - Lifetime US3682097A (en) 1968-10-14 1969-09-08 Firearm cartridge

Country Status (10)

Country Link
US (1) US3682097A (ja)
JP (1) JPS4828240B1 (ja)
CA (1) CA930243A (ja)
CH (1) CH515482A (ja)
DE (1) DE1951006C2 (ja)
FR (1) FR2022265A1 (ja)
GB (1) GB1229119A (ja)
NL (1) NL6914427A (ja)
SE (1) SE324301B (ja)
SU (1) SU367622A3 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2557873C1 (ru) * 2014-01-09 2015-07-27 Николай Евгеньевич Староверов Комплекс высокоточного оружия /варианты/

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2438229C2 (de) * 1974-08-08 1982-12-23 Deutsche Schlauchbootfabrik Hans Scheibert GmbH & Co KG, 3456 Eschershausen Schlauchboot
JPS51130641U (ja) * 1975-04-14 1976-10-21
JPS5213034U (ja) * 1975-07-15 1977-01-29
JPS53536U (ja) * 1976-06-18 1978-01-06
JPS53535U (ja) * 1976-06-18 1978-01-06
JPS5355932U (ja) * 1976-10-15 1978-05-13
JPS5365143U (ja) * 1976-11-01 1978-06-01
JPS5428238U (ja) * 1977-07-28 1979-02-23
JPS5443048U (ja) * 1977-12-06 1979-03-23
JPS54115738U (ja) * 1978-02-03 1979-08-14
JPS53131634U (ja) * 1978-04-03 1978-10-19
JPS54173541U (ja) * 1978-05-27 1979-12-07
JPS5513347A (en) * 1978-07-15 1980-01-30 Matsushita Electric Works Ltd Opening*closing apparatus for openign of building
JPS5513352A (en) * 1978-07-15 1980-01-30 Matsushita Electric Works Ltd Opening*closing apparatus for opening of building
JPS5513346A (en) * 1978-07-15 1980-01-30 Matsushita Electric Works Ltd Opening*closing apparatus for openign of building
JPS5445140U (ja) * 1978-09-01 1979-03-28
JPS5547594U (ja) * 1978-09-25 1980-03-28
JPS5596265U (ja) * 1979-08-24 1980-07-04
DE3046143A1 (de) * 1980-12-06 1982-07-15 Continental Gummi-Werke Ag, 3000 Hannover Mit gummi oder gummiaehnlichen kunststoffen beschichtetes gewebe
DE3309288A1 (de) * 1983-03-16 1984-09-20 Diehl GmbH & Co, 8500 Nürnberg Huelsenlose munition fuer maschinenwaffen
FR2570645B1 (fr) * 1984-09-24 1989-07-21 Poudres & Explosifs Ste Nale Procede de fabrication d'objets combustibles par emboutissage de papier combustible et objets combustibles ainsi obtenus
RU168612U1 (ru) * 2015-04-13 2017-02-13 Владимир Владимирович Каширин Безгильзовый боеприпас с упорным кольцом

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US487125A (en) * 1892-11-29 Jacques antoine creuzx de latouche
US1353118A (en) * 1920-01-06 1920-09-14 Thomas F Ryan Cartridge
DE455382C (de) * 1919-05-27 1928-01-31 Joh Nic Ludwig Mit dem Treibmittel fest verbundenes Geschoss
US1808877A (en) * 1929-12-21 1931-06-09 Cecil G Young Propellant charge for projectiles and method of forming the same
GB519341A (en) * 1938-07-05 1940-03-21 Antoine Gazda Improvements in and relating to fire arms with electrical firing means
US2299465A (en) * 1932-01-08 1942-10-20 Roscoe A Coffman Power generating unit
US2632391A (en) * 1945-11-23 1953-03-24 Warren H Kintzinger Consumable cartridge
US3345945A (en) * 1965-08-03 1967-10-10 Joseph B Quinlan Uniformed density caseless cartridge
US3396658A (en) * 1966-06-02 1968-08-13 Army Usa Small arms cartridge

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US895558A (en) * 1907-07-02 1908-08-11 Stewart S Gates Cartridge-shell.
CH205215A (de) * 1938-06-08 1939-06-15 Gazda Antoine Geschosspatrone.
FR1005318A (fr) * 1947-07-01 1952-04-09 Cartouches pour armes à feu
FR1405996A (fr) * 1964-06-04 1965-07-16 Baronne Von Thyssen Bornemisza Douille d'artillerie en deux pièces, l'une combustible, l'autre en métal
US3260203A (en) * 1965-02-18 1966-07-12 Atlantic Res Corp Cartridge cases from fibrous nitrocellulose and alkaline catalyzed phenolic resin

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US487125A (en) * 1892-11-29 Jacques antoine creuzx de latouche
DE455382C (de) * 1919-05-27 1928-01-31 Joh Nic Ludwig Mit dem Treibmittel fest verbundenes Geschoss
US1353118A (en) * 1920-01-06 1920-09-14 Thomas F Ryan Cartridge
US1808877A (en) * 1929-12-21 1931-06-09 Cecil G Young Propellant charge for projectiles and method of forming the same
US2299465A (en) * 1932-01-08 1942-10-20 Roscoe A Coffman Power generating unit
GB519341A (en) * 1938-07-05 1940-03-21 Antoine Gazda Improvements in and relating to fire arms with electrical firing means
US2632391A (en) * 1945-11-23 1953-03-24 Warren H Kintzinger Consumable cartridge
US3345945A (en) * 1965-08-03 1967-10-10 Joseph B Quinlan Uniformed density caseless cartridge
US3396658A (en) * 1966-06-02 1968-08-13 Army Usa Small arms cartridge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2557873C1 (ru) * 2014-01-09 2015-07-27 Николай Евгеньевич Староверов Комплекс высокоточного оружия /варианты/

Also Published As

Publication number Publication date
NL6914427A (ja) 1970-04-16
DE1951006C2 (de) 1983-02-03
JPS4828240B1 (ja) 1973-08-30
SU367622A3 (ja) 1973-01-23
GB1229119A (ja) 1971-04-21
CA930243A (en) 1973-07-17
FR2022265A1 (ja) 1970-07-31
SE324301B (ja) 1970-05-25
CH515482A (de) 1971-11-15
DE1951006A1 (de) 1970-04-23

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Legal Events

Date Code Title Description
AS Assignment

Owner name: TETRA PAK DEVELOPPEMENT SA, PO BOX 181, CH-1009 PU

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:LADCO ENTERPRISES LTD.;REEL/FRAME:004377/0459

Effective date: 19850204