US3570406A - Practice cartridge for automatic firearms - Google Patents

Practice cartridge for automatic firearms Download PDF

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Publication number
US3570406A
US3570406A US733362A US3570406DA US3570406A US 3570406 A US3570406 A US 3570406A US 733362 A US733362 A US 733362A US 3570406D A US3570406D A US 3570406DA US 3570406 A US3570406 A US 3570406A
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US
United States
Prior art keywords
granules
projectile
cartridge according
jacket
cartridge
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
US733362A
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English (en)
Inventor
Hubert Frey
Hans-Joachim Kaseler
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 AG
Original Assignee
Dynamit Nobel 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 Dynamit Nobel AG filed Critical Dynamit Nobel AG
Application granted granted Critical
Publication of US3570406A publication Critical patent/US3570406A/en
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
    • F42B8/00—Practice or training ammunition
    • F42B8/12—Projectiles or missiles
    • F42B8/14—Projectiles or missiles disintegrating in flight or upon impact
    • F42B8/16—Projectiles or missiles disintegrating in flight or upon impact containing an inert filler in powder or granular form

Definitions

  • the projectile of the practice cartridge for automatic firearms consists of a synthetic jacket with a loose bulk granular filling, wherein the jacket will disintegrate upon exiting from the firearm barrel after firing to release the granules,
  • Each granule consists of a heavy metal powder held together by a synthetic binder in the range of about 20 to 45 percent by weight. Each granule is disklike or lenticular in configuration.
  • a practice cartridge with a projectile consisting of a projectile jacket that will disintegrate upon firing to release a compressed or loose inorganic filling after leaving the barrel of the firearm.
  • metallic powder has been employed as the filling. It is desirable to provide a relatively heavy filling so that the practice projectile will approach the weight of the live projectile as closely as possible to simulate the firing of a live projectile, particularly for purposes of actuating the automatic mechanisms of automatic firearms as in the case of using live ammunition. It is also desirable to provide the filling loosely packed within the jacket so that when the projectile leaves the barrel of the firearm, it will disintegrate into particles exhibiting only a very short range.
  • a powder projectile filling has been employed heretofore; to satisfy the weight considerations, the powder has been made from heavy metal or the like.
  • a projectile filling of the above-mentioned type still exhibits substantial disadvantages.
  • a more or less dense cloud of dust is produced in front of the firearm barrel, which may lead to a complete obstruction of vision during continuous firing.
  • the clouds of dust may contaminate the air filtering systems necessary on board ships; furthermore, a dusting of the ship with pulverulent iron will cause all of the deck structures to be coated with rust.
  • the cartridge of the present invention is designed to exhibit the required weight for purposes of actuating automatic firearms and is designed to be readily disintegratable without the projectile filling causing dust whirls or otherwise entailing disadvantageous effects during agricultural use of the surrounding soil.
  • the practice cartridge of the present invention includes a projectile consisting of a projectile jacket and a filling, wherein the filling is a bulk material of loose granules consisting of a heavy metal powder bound with a binder, which granules per se cannot be broken up during firing.
  • a training or practice cartridge is obtained wherein the desired projectile weight may easily be reached and will not produce any dust formation after disintegration upon leaving the barrel of the weapon.
  • the granules consist of heavy metal powder combined by a binder so that they are no longer subjected to the danger of corroding. Also, with such a construction, the projectile filling will not impair or poison the surrounding soil or cattle during subsequent agricultural use of the surrounding soil.
  • the binder ensures that the granules, upon firing, do not disintegrate and thus cannot produce any dust. On the other hand, the granules remain relatively soft so that they present practically no danger at all to any observers in the proximity of the firearm during firing.
  • a furthur advantage resides in that even if the projectile jacket bursts within the firearm barrel during firing, the inner barrel wall will not be adversely affected by the granules, because the filling cannot exit through the small slots or breaks in the projectile jacket. Thus, the projectile filling remains within the projectile jacket until after the cartridge has left the barrel of the firearm. Furthermore, with the present invention, it is possible to employ lead or lead oxide for the granules, without the usual harmful effects of this material; this has the considerable advantage with respect to obtaining the weight necessary for effecting the automatic action of the automatic firearm so that the firearm may be handled as if under normal conditions.
  • the binder-combined granules of lead or lead oxide do not exhibit any disadvantages when absorbed by animals, such as cattle subsequently using the surrounding soil. Furthermore, no additives are necessary to protect against a corrosion of the projectile filling.
  • FIGURE is a cross-sectional view through a cartridge employing the present invention taken along the central longitudinal axis aligned with the direction of intended flight.
  • the projectile l is mounted within a suitable per se conventional tubular cartridge case 2.
  • the cartridge case 2 contains therein a suitable propellant powder charge 3 to be ignited by ignition means at the rear or bottom end of the cartridge.
  • the projectile 1 consists of a synthetic material jacket 4 completely enclosing therein a loose bulk granule filling 5.
  • a particularly advantageous composition of the granules for the projectile filling consists of particles of synthetic material homogeneously filled by heavy metal dust or metal oxide.
  • the proportion of synthetic material in the granule can vary and is dependent upon the type of heavy metal or heavy pigment.
  • the synthetic material is within the range of 20 to 45 percent by weight of the granule.
  • a preferable mixture for making a granule may consist of about 75 kg. of lead oxide and about 25 kg. of PVC concentrate.
  • the projectile jacket is preferably formed from a synthetic material, for example a highly extensible thermoplastic material such as polyethylene or the like that will break up at least after leaving the barrel of the firearm.
  • the granules are provided with such a configuration that they are subjected during flight after leaving the bar rel of the weapon to as large an air resistance as possible, so that their range will practically speaking not extend beyond the pressure wave of the combustion gases.
  • the granules are preferably provided with a larger effective cross-sectional area in one profile plane than in another profile plane at right angles thereto. Particular advantages are gained with granules that are disclike or lenticular in shape.
  • each granule from a mixture of inorganic material bound together with an organic binder.
  • a metallic powder for the inorganic material; examples of metallic powder that may be used are iron, iron oxide, lead, and lead oxide.
  • the binder may be a thermoplastic synthetic material, for example, or any of the known materials heretofore used as a binder in the formation of a one-piece pressed practice projectile.
  • Each of the granules is individually formed from a mixture of binder and filler powder.
  • the granules within the jacket are in loose bulk form, that is there is no appreciable bonding or mechanical connection between adjacent granules.
  • each granule is a homogeneous mixture of binder and metallic powder.
  • a practice cartridge for automatic firearms or the like having a projectile receivable in a cartridge case and consisting of a projectile jacket and a projectile charge, wherein the projectile jacket and projectile charge disintegrate after firing, the improvement comprising the projectile charge having a plurality of loose bulk granules, each of the granules consisting of relatively heavy material essentially comprising metallic powder and binder material means holding said relatively heavy material into the granule form so as to be nondestructable upon firing.
  • each of the grains is a homogenous mixture of the relatively heavy metallic powder at the interior and the binder material means essentially comprising synthetic organic material.
  • each of said granules has an effective profile cross-sectional area substantially larger as viewed in one plane than as viewed in another plane at right angles thereto.
  • each of said granules is disc shaped.
  • each of said granules is lenticular in configuration.
  • each of said granules has an effective profile cross-sectional area substantially larger as viewed in one plane than as viewed in another plane at right angles thereto.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
US733362A 1967-05-31 1968-05-31 Practice cartridge for automatic firearms Expired - Lifetime US3570406A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0053206 1967-05-31

Publications (1)

Publication Number Publication Date
US3570406A true US3570406A (en) 1971-03-16

Family

ID=7054781

Family Applications (1)

Application Number Title Priority Date Filing Date
US733362A Expired - Lifetime US3570406A (en) 1967-05-31 1968-05-31 Practice cartridge for automatic firearms

Country Status (5)

Country Link
US (1) US3570406A (cs)
BE (1) BE715829A (cs)
DE (1) DE1578118A1 (cs)
FR (1) FR1566984A (cs)
NL (1) NL6807012A (cs)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3898933A (en) * 1973-03-21 1975-08-12 Haut Rhin Manufacture Machines Training bullet for fire arms
US4913054A (en) * 1987-06-08 1990-04-03 Dynafore Corporation Projectile delivery apparatus
US5569874A (en) * 1995-02-27 1996-10-29 Nelson; Eric A. Formed wire bullet
WO1997027447A1 (en) * 1996-01-25 1997-07-31 Remington Arms Company, Inc. Lead-free frangible projectile
US6640724B1 (en) 1999-08-04 2003-11-04 Olin Corporation Slug for industrial ballistic tool
RU2229093C2 (ru) * 2002-06-17 2004-05-20 Государственное унитарное предприятие "Конструкторское бюро приборостроения" Патрон стрелкового оружия для учебной стрельбы
US7207276B1 (en) * 2004-08-25 2007-04-24 United States Of America As Represented By The Secretary Of The Army Non-lethal ammunition utilizing a dense powder ballast and a two-stage firing sequence
RU2309370C1 (ru) * 2006-02-13 2007-10-27 Государственное унитарное предприятие "Конструкторское бюро приборостроения" Учебно-тренировочный патрон для гранатомета

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4027594A (en) * 1976-06-21 1977-06-07 Olin Corporation Disintegrating lead shot

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2995090A (en) * 1954-07-02 1961-08-08 Remington Arms Co Inc Gallery bullet
US3123003A (en) * 1962-01-03 1964-03-03 lange
US3216358A (en) * 1962-07-26 1965-11-09 Mannesmann Ag Method of making readily disintegrating projectile cores for practice ammunition
US3338167A (en) * 1962-03-17 1967-08-29 Karlsruhe Augsburg Iweka Disintegrating training ammunition for firearms
US3385215A (en) * 1966-05-17 1968-05-28 Karlsruhe Augsburg Iweka Disintegrating training ammunition for firearms

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2995090A (en) * 1954-07-02 1961-08-08 Remington Arms Co Inc Gallery bullet
US3123003A (en) * 1962-01-03 1964-03-03 lange
US3338167A (en) * 1962-03-17 1967-08-29 Karlsruhe Augsburg Iweka Disintegrating training ammunition for firearms
US3216358A (en) * 1962-07-26 1965-11-09 Mannesmann Ag Method of making readily disintegrating projectile cores for practice ammunition
US3385215A (en) * 1966-05-17 1968-05-28 Karlsruhe Augsburg Iweka Disintegrating training ammunition for firearms

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3898933A (en) * 1973-03-21 1975-08-12 Haut Rhin Manufacture Machines Training bullet for fire arms
US4913054A (en) * 1987-06-08 1990-04-03 Dynafore Corporation Projectile delivery apparatus
US5569874A (en) * 1995-02-27 1996-10-29 Nelson; Eric A. Formed wire bullet
WO1997027447A1 (en) * 1996-01-25 1997-07-31 Remington Arms Company, Inc. Lead-free frangible projectile
US20040200340A1 (en) * 1999-08-04 2004-10-14 Robinson Peter W. Slug for industrial ballistic tool
US6640724B1 (en) 1999-08-04 2003-11-04 Olin Corporation Slug for industrial ballistic tool
US7159519B2 (en) 1999-08-04 2007-01-09 Olin Corporation Slug for industrial ballistic tool
US7328658B2 (en) 1999-08-04 2008-02-12 Olin Corporation Slug for industrial ballistic tool
US20110017050A1 (en) * 1999-08-04 2011-01-27 Robinson Peter W Slug for industrial ballistic tool
US7891299B2 (en) 1999-08-04 2011-02-22 Olin Corporation Slug for industrial ballistic tool
RU2229093C2 (ru) * 2002-06-17 2004-05-20 Государственное унитарное предприятие "Конструкторское бюро приборостроения" Патрон стрелкового оружия для учебной стрельбы
US7207276B1 (en) * 2004-08-25 2007-04-24 United States Of America As Represented By The Secretary Of The Army Non-lethal ammunition utilizing a dense powder ballast and a two-stage firing sequence
RU2309370C1 (ru) * 2006-02-13 2007-10-27 Государственное унитарное предприятие "Конструкторское бюро приборостроения" Учебно-тренировочный патрон для гранатомета

Also Published As

Publication number Publication date
DE1578118A1 (de) 1971-07-01
BE715829A (cs) 1968-11-29
FR1566984A (cs) 1969-05-09
NL6807012A (cs) 1968-12-02

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