EP0129608A1 - Projectile pour arme à feu - Google Patents

Projectile pour arme à feu Download PDF

Info

Publication number
EP0129608A1
EP0129608A1 EP83106054A EP83106054A EP0129608A1 EP 0129608 A1 EP0129608 A1 EP 0129608A1 EP 83106054 A EP83106054 A EP 83106054A EP 83106054 A EP83106054 A EP 83106054A EP 0129608 A1 EP0129608 A1 EP 0129608A1
Authority
EP
European Patent Office
Prior art keywords
bullet
grooves
sabot
slug
fingers
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.)
Granted
Application number
EP83106054A
Other languages
German (de)
English (en)
Other versions
EP0129608B1 (fr
Inventor
Leroy James Sullivan
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.)
Branscomb Corp NV
Original Assignee
Branscomb Corp NV
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 to EP83106054A priority Critical patent/EP0129608B1/fr
Application filed by Branscomb Corp NV filed Critical Branscomb Corp NV
Priority to AT83106054T priority patent/ATE42399T1/de
Priority to DE8383106054T priority patent/DE3379673D1/de
Priority to JP59502548A priority patent/JPS60502113A/ja
Priority to HU842985A priority patent/HU192037B/hu
Priority to BR8406941A priority patent/BR8406941A/pt
Priority to HU845419A priority patent/HU197441B/hu
Priority to AU31005/84A priority patent/AU578029B2/en
Priority to PCT/EP1984/000174 priority patent/WO1985000218A1/fr
Priority to DE8484106760T priority patent/DE3477835D1/de
Priority to EP84106760A priority patent/EP0129777B1/fr
Priority to AT84106760T priority patent/ATE42400T1/de
Priority to US06/621,735 priority patent/US4644866A/en
Priority to IL72181A priority patent/IL72181A/xx
Priority to ES1984287861U priority patent/ES287861Y/es
Priority to KR1019840003532A priority patent/KR870002025B1/ko
Priority to CA000457266A priority patent/CA1278952C/fr
Publication of EP0129608A1 publication Critical patent/EP0129608A1/fr
Priority to SU853857483A priority patent/SU1828538A3/ru
Priority to NO850702A priority patent/NO160274C/no
Priority to DK079585A priority patent/DK163378C/da
Priority to FI850743A priority patent/FI83137C/fi
Priority to ES1985291321U priority patent/ES291321Y/es
Priority to ES1985291322U priority patent/ES291322Y/es
Priority to ES1985291320U priority patent/ES291320Y/es
Priority to ES1985291319U priority patent/ES291319Y/es
Priority to US06/902,297 priority patent/US4700630A/en
Priority to US07/078,549 priority patent/US4829904A/en
Priority to NO883792A priority patent/NO170440C/no
Application granted granted Critical
Publication of EP0129608B1 publication Critical patent/EP0129608B1/fr
Priority to IL94378A priority patent/IL94378A0/xx
Priority to FI903702A priority patent/FI903702A0/fi
Priority to DK911133A priority patent/DK113391D0/da
Expired 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
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/02—Driving bands; Rotating bands
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/02—Stabilising arrangements
    • F42B10/22—Projectiles of cannelured type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B7/00—Shotgun ammunition
    • F42B7/02—Cartridges, i.e. cases with propellant charge and missile
    • F42B7/10—Ball or slug shotgun cartridges

Definitions

  • the present invention relates to ammunition and is particularly useful in ammunition for use in conventional small arms weapons having rifled or non-rifled barrels.
  • Conventional rifle bullets usually have a lead core with a surrounding copper jacket of a diameter which is slightly oversize with regard to the diameter of the barrel of the weapon with which it is intended to be used, the copper jacket of the bullet being engraved during its passage down the barrel of the weapon by the helical rifling grooves in the barrel.
  • the bullet is spun by the rifling grooves to stabilize its flight, but a considerable proportion of the energy from the ignition of the cartridge containing the bullet is lost through friction between the bullet and the rifle barrel caused by the engraving of the bullet, the friction generating heat in the barrel.
  • heat generated by the friction of the bullets passing through the barrel can be a serious problem, causing the weapon to jam and firing to stop and, at its worst the barrel to bulge or burst.
  • a conventional shotgun slug is a hollow, cylindrical lead cup with a domed end (ogival shape), but as a shotgun has no rifling grooves the slug does not spin and is accurate only upto a range of about 100 metres or even less, partly due to the lack of spin and partly due to its unstreamlined shape which slows it quickly.
  • an ammunition round comprises a casing for containing a propelling charge, a bullet which has a plurality of flutes or grooves in its outer surface extending helically around or substantially parallel to the longitudinal axis of the bullet, and a sabot into which the bullet seats and which seals the bullet into the casing, the sabot having at least a part with a diameter greater than the diameter of the bullet and a plurality of fingers engaging respective ones of the grooves in the bullet to cause the bullet to spin as the sabot is rotated by engagement with rifling grooves in a barrel through which the round is fired.
  • an ammunition round comprises a casing for containing a propelling charge, a slug which has a plurality of flutes or grooves in its outer surface extending helically around or substantially parallel to the longitudinal axis of the slug, and a sabot into which the slug seats and which seals the slug into the casing, the sabot having a plurality of fingers seated in respective ones of the grooves in the slug, the fingers having a thickness substantially the same as the depth of the grooves and extending substantially the length of the slug thereby to stabilize the slug and prevent it from tilting off axis as it travels down the barrel through which it is fired.
  • the slug when the slug is for a shotgun, the slug is formed from lead and weighs the same as the conventional shot within a shotgun cartridge.
  • the sabot comprises a resilient plastics moulding.
  • the fingers of the sabot may be hollowed out to lighten the round if required.
  • the invention also includes a bullet which has a plurality of flutes or grooves in its outer surface extending helically around or substantially parallel to the longitudinal axis of the bullet.
  • the invention includes a sabot having a cylindrical body part and a plurality of fingers parallel to the axis of the body part or helically formed about the axis.
  • Such an ammunition round generates considerably less friction than a normal bullet in the barrel of a gun as the sabot is more easily engraved by the rifling grooves in the barrel and thus generates less friction as it travels along the barrel.
  • the result is that a greater part of the initial energy is put into the bullet as kinetic energy (velocity) and less of the initial energy is converted into heat in the barrel.
  • the sabot has a body which is short in comparison with the length of the fingers, the fingers being flung radially outwards from the longitudinal axis of the bullet after it leaves the barrel by the spin of the bullet and sabot, the outward motion of the fingers thereby releasing the sabot from engagement with the grooves of the bullet and allowing air pressure to disengage the sabot completely from the bullet shortly after leaving the barrel.
  • the sabot may have an axial bore which allows the pressure of the propelling charge to force the sabot against the walls of the barrel into engagement with the rifling grooves.
  • the rear of the bullet may have a tapered engagement with the body of the sabot to produce the same effect.
  • the bullet By forming grooves in the surface of the bullet the bullet can be spin and/or fin stabilized during its passage through the air, when formed with helical grooves the spin rate being matched to the forward velocity of the bullet in flight so that as the forward velocity diminishes so does the spin rate.
  • the bullet is formed of steel or a similar hard metal.
  • an ammunition round comprises a casing for containing a propelling charge, a slug which has a plurality of flutes or grooves in its outer surface extending helically around or substantially parallel to the longitudinal axis of the slug, and a plurality of elongate elements seated in the grooves and having a thickness substantially the same as the depth of the grooves and extending substantially the length of the slug thereby to stabilize the slug and prevent it from tilting off axis as it travels down the barrel through which it is fired.
  • the slug and elements are formed of steel.
  • the bullet 1 When seen in elevation as in Figure 1, the bullet 1 has a conventional outline having a parallel sided portion 2 and a tapered nose 3.
  • the surface of the bullet is not a smooth cylindrical/tapered surface, but rather a plurality of V-shaped grooves 4 are formed extending parallel to the longitudinal axis 1' of the bullet, in the present embodiment there being four grooves and each of the grooves having a substantially 90° included angle at its base. This leaves, therefore, four elongate flanges 5 in a cruciform shape as shown in Figure 2.
  • the grooves 4 extend to the nose 3 of the bullet and the bullet thus presents a much smaller frontal area than a conventional bullet with a corresponding increase in the ability of the bullet to penetrate armour plating or the like..
  • a sabot formed of a resilient plastics material such as nylon is mounted in use.
  • the sabot 6, as seen in Figure 3 and 4 has a generally cylindrical body part 7 with an enlarged diameter raised portion 8 which is of a diameter just slightly larger than the nominal diameter of the bullet 1. This is best seen in Figure 5.
  • Extendingfrom the body part 7 are a plurality, in the present embodiment four, fingers 9, each of which extend generally parallel to the central axis (7') of the cylindrical body part 7 and each of which, when viewed in cross section as in Figure 4, comprises a substantially 90° segment which is a close fit within a respective groove 4 in the bullet.
  • each leg has a reduced thickness portion 10 which enables a casing 11, into which the assembly of the sabot and bullet are mounted together, to be crimped onto the assembled bullet 1 and sabot 6 (as shown at 12) at its smaller diameter end portion 13 into which the assembly of bullet and sabot is fitted.
  • the plastics material of the sabot seals the casing at the crimp to make the round watertight during storage.
  • the fingers of the sabot fill the grooves of the bullet behind the crimp to prevent gas leakage through the grooves at ignition.
  • a standard 5.56 military or .223 Remington barrel has a nominal bore diameter of .219 inches and the diameter to the base of the rifling grooves is nominally .224 inches, the width of the rifling grooves being .07 inches.
  • the diameter of a bullet (as shown in the drawings) to fit is of nominal diameter .21875 inches and the width of the flanges 5 is .060 inches.
  • the overall length of the bullet 1 is 1.127 inches.
  • the nominal diameter of the sabot body 7 is .216 inches and that of the enlarged diameter portion 8 .224 inches, the length of the portion 8 being .062 inches and the length of the whole of the body 7 .125 inches.
  • the slugs 1 have an ogival shape, the ratio of the length of the slug to its diameter approaching unity.
  • Each of the fingers 9 in the first slug has a hollow in its radially outer surface to lighten the sabot in order to reduce the weight of the cartridge to that of a conventional cartridge.
  • the metallic elements 14 shown in figures 8a and 8b comprise steel elements of equilateral curved triangular shape fitting congruently within the grooves 4 in the second slug 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Testing Of Engines (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Vibration Dampers (AREA)
  • Lubricants (AREA)
  • Flexible Shafts (AREA)
  • Toilet Supplies (AREA)
  • Valve Device For Special Equipments (AREA)
  • Powder Metallurgy (AREA)
EP83106054A 1983-06-22 1983-06-22 Projectile pour arme à feu Expired EP0129608B1 (fr)

Priority Applications (31)

Application Number Priority Date Filing Date Title
AT83106054T ATE42399T1 (de) 1983-06-22 1983-06-22 Geschoss fuer feuerwaffen.
DE8383106054T DE3379673D1 (en) 1983-06-22 1983-06-22 Bullet
EP83106054A EP0129608B1 (fr) 1983-06-22 1983-06-22 Projectile pour arme à feu
HU842985A HU192037B (en) 1983-06-22 1984-06-13 Cartridge for guns and plastic shoe for gun cartridges
JP59502548A JPS60502113A (ja) 1983-06-22 1984-06-13 弾薬付き弾丸
BR8406941A BR8406941A (pt) 1983-06-22 1984-06-13 Peca de municao
HU845419A HU197441B (en) 1983-06-22 1984-06-13 Cartridge for guns
AU31005/84A AU578029B2 (en) 1983-06-22 1984-06-13 Ammunition round
PCT/EP1984/000174 WO1985000218A1 (fr) 1983-06-22 1984-06-13 Cartouche de munition
DE8484106760T DE3477835D1 (en) 1983-06-22 1984-06-13 Ammunition round
EP84106760A EP0129777B1 (fr) 1983-06-22 1984-06-13 Munition
AT84106760T ATE42400T1 (de) 1983-06-22 1984-06-13 Munition.
US06/621,735 US4644866A (en) 1983-06-22 1984-06-18 Ammunition round
IL72181A IL72181A (en) 1983-06-22 1984-06-21 Ammunition round
KR1019840003532A KR870002025B1 (ko) 1983-06-22 1984-06-22 소총 탄약
CA000457266A CA1278952C (fr) 1983-06-22 1984-06-22 Cartouche d'arme a feu
ES1984287861U ES287861Y (es) 1983-06-22 1984-06-22 Municion para armas de fuego.
SU853857483A SU1828538A3 (ru) 1983-06-22 1985-02-20 Патрон стрелкового оружия
NO850702A NO160274C (no) 1983-06-22 1985-02-21 Patron for skytevaapen.
DK079585A DK163378C (da) 1983-06-22 1985-02-21 Patron til skydevaaben
FI850743A FI83137C (fi) 1983-06-22 1985-02-22 Projektil.
ES1985291319U ES291319Y (es) 1983-06-22 1985-12-27 Municion de arma de fuego.
ES1985291322U ES291322Y (es) 1983-06-22 1985-12-27 Municion mejorada para armas.
ES1985291320U ES291320Y (es) 1983-06-22 1985-12-27 Disposicion de municion para armas.
ES1985291321U ES291321Y (es) 1983-06-22 1985-12-27 Municion perfeccionada para armas de fuego.
US06/902,297 US4700630A (en) 1983-06-22 1986-08-29 Ammunition round
US07/078,549 US4829904A (en) 1983-06-22 1987-09-02 Ammunition round
NO883792A NO170440C (no) 1983-06-22 1988-08-25 Ammunisjon for haandvaapen
IL94378A IL94378A0 (en) 1983-06-22 1990-05-14 Ammunition round
FI903702A FI903702A0 (fi) 1983-06-22 1990-07-23 Patron.
DK911133A DK113391D0 (da) 1983-06-22 1991-06-13 Patron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83106054A EP0129608B1 (fr) 1983-06-22 1983-06-22 Projectile pour arme à feu

Publications (2)

Publication Number Publication Date
EP0129608A1 true EP0129608A1 (fr) 1985-01-02
EP0129608B1 EP0129608B1 (fr) 1989-04-19

Family

ID=8190534

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83106054A Expired EP0129608B1 (fr) 1983-06-22 1983-06-22 Projectile pour arme à feu

Country Status (6)

Country Link
EP (1) EP0129608B1 (fr)
JP (1) JPS60502113A (fr)
AT (1) ATE42399T1 (fr)
DE (1) DE3379673D1 (fr)
IL (1) IL72181A (fr)
SU (1) SU1828538A3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0150229B1 (fr) * 1984-01-13 1988-12-21 Branscomb Corporation N.V. Projectile pour arme à feu
US11268791B1 (en) 2014-05-23 2022-03-08 Vista Outdoor Operations Llc Handgun cartridge with shear groove bullet

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4813635A (en) * 1986-12-29 1989-03-21 United Technologies Corporation Projectile with reduced base drag
RU2685011C1 (ru) * 2017-12-28 2019-04-16 федеральное государственное бюджетное образовательное учреждение высшего образования "Московский государственный технический университет имени Н.Э. Баумана (национальный исследовательский университет)" (МГТУ им. Н.Э. Баумана) Поддон для метаемого измерительного зонда
JP7364517B2 (ja) * 2020-03-27 2023-10-18 株式会社日本製鋼所 飛翔体

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB107088A (fr) * 1900-01-01
FR736690A (fr) * 1932-05-03 1932-11-26 Balle rotative pour fusil et arme non rayées
DE583098C (de) * 1932-05-07 1933-08-28 Paul Thuermer Flintenlaufgeschoss
FR799933A (fr) * 1935-03-26 1936-06-23 Expl Des Brevets O Matter S E Balle
FR861167A (fr) * 1939-07-18 1941-02-03 Armes De Guerre Fab Nat Projectile pour arme à feu
FR1124740A (fr) * 1955-04-19 1956-10-16 Cartouche de chasse
US4056060A (en) * 1976-02-23 1977-11-01 The Government Of The United States, As Represented By The Secretary Of The Army Armor plate penetrator
US4063511A (en) * 1976-07-21 1977-12-20 Bullard James M Spinning shot gun projectile
FR2365098A1 (fr) * 1976-09-20 1978-04-14 Rheinmetall Gmbh Projectile annulaire stabilise par giration

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083306A (en) * 1961-10-27 1978-04-11 Olin Corporation Novel cartridge

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB107088A (fr) * 1900-01-01
FR736690A (fr) * 1932-05-03 1932-11-26 Balle rotative pour fusil et arme non rayées
DE583098C (de) * 1932-05-07 1933-08-28 Paul Thuermer Flintenlaufgeschoss
FR799933A (fr) * 1935-03-26 1936-06-23 Expl Des Brevets O Matter S E Balle
FR861167A (fr) * 1939-07-18 1941-02-03 Armes De Guerre Fab Nat Projectile pour arme à feu
FR1124740A (fr) * 1955-04-19 1956-10-16 Cartouche de chasse
US4056060A (en) * 1976-02-23 1977-11-01 The Government Of The United States, As Represented By The Secretary Of The Army Armor plate penetrator
US4063511A (en) * 1976-07-21 1977-12-20 Bullard James M Spinning shot gun projectile
FR2365098A1 (fr) * 1976-09-20 1978-04-14 Rheinmetall Gmbh Projectile annulaire stabilise par giration

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0150229B1 (fr) * 1984-01-13 1988-12-21 Branscomb Corporation N.V. Projectile pour arme à feu
US11268791B1 (en) 2014-05-23 2022-03-08 Vista Outdoor Operations Llc Handgun cartridge with shear groove bullet

Also Published As

Publication number Publication date
SU1828538A3 (ru) 1993-07-15
JPS60502113A (ja) 1985-12-05
DE3379673D1 (en) 1989-05-24
IL72181A (en) 1992-09-06
ATE42399T1 (de) 1989-05-15
JPH0445757B2 (fr) 1992-07-27
EP0129608B1 (fr) 1989-04-19

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