US3174431A - Grenades and similar devices to be launched by a firearm - Google Patents

Grenades and similar devices to be launched by a firearm Download PDF

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Publication number
US3174431A
US3174431A US239881A US23988162A US3174431A US 3174431 A US3174431 A US 3174431A US 239881 A US239881 A US 239881A US 23988162 A US23988162 A US 23988162A US 3174431 A US3174431 A US 3174431A
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US
United States
Prior art keywords
plates
firearm
war head
bullet
front plate
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
US239881A
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English (en)
Inventor
Wyser Giulio
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.)
Brevets Aero Mecaniques SA
Original Assignee
Brevets Aero Mecaniques SA
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 Brevets Aero Mecaniques SA filed Critical Brevets Aero Mecaniques SA
Application granted granted Critical
Publication of US3174431A publication Critical patent/US3174431A/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
    • F42B30/00—Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
    • F42B30/04—Rifle grenades
    • F42B30/06—Bullet traps or bullet decelerators therefor

Definitions

  • the present invention relates to a special projectiles intended to be launched by a firearm intended normally to fire a bullet or similar ammunition (hereinafter called normal ammunition), launching of such a special projectile being effected by means of a special launching charge contained in an ammunition (hereinafter called special ammunition), which is a blank, that is to say does not comprise a projectile, intended to be fitted in the cartridge chamber of the firearm, instead of the normal ammunition, when it is desired to launch a special projectile.
  • the invention is more especially, but not exclusively, concerned with grenades to be launched from a ride, and in particular an automatic or semi-automatic rifle.
  • the chief object of the present invention is to provide a special projectile of the above mentioned kind which is better adapted to meet the requirements of practice than those known up to this time, in particular concerning the safety of the rifleman in the case of the latter making, by mistake, use of the normal ammunition instead of the special one, for launching a special projectile.
  • the invention consists chiefly, while providing, rearwardly of the war head with which the special projectile is provided, a protective armor structure intended to form a shield preventing impact of said war head by a bullet fired by mistake in the firearm, in forming said protective armor structure by a pair of solid shield plates disposed one behind the other and in a continuous fashion across the path of travel of said bullet, said two shield plates being in contact with each other and being made of respective materials of different resistances, the material of the roar plate being more resistant than the material of the front plate.
  • the invention is shown as illustrating the case of a grenade to be launched by an automatic or semi-automatic gun after fitting of a launching sleeve 1 (secured to the rear of the war head 2 of the grenade) on a grenade launching device 3 (which may act as a muzzle brake) carried by the front end of the barrel 4 of the gun.
  • the grenade as a whole is made of any suitable construction, for instance that illustrated by the drawing, and according to which the launching sleeve or casing 1 of said grenade is quite free inwardly, which would not be the case if said sleeve formed a housing for a booster having an axial nozzle.
  • a protective armor device which will be hereinafter more explicitely described.
  • this protective armor device instead of making this protective armor device of a single plate or similar structure, it is made of at least two distinct circular plates 5 and 6 disposed in tandem-like fashion, the composite armored structure thus constituted having proved to be more efiicient than a single armor plate.
  • Said plates 5 and 6 are in contact with each other.
  • plates 5 and 6 are made of materials of different resistances, the material of the rear plate 6 being more resistant than that of the front plate 5.
  • the rear plate 6 may be made of a chromium-molybdenum steel, tempered and reheated having a resistance averaging -140 kgs./mm.
  • the front plate may be made of a steel having a resistance lower by about 20% than that of the steel of which the rear plate 6 is made.
  • the respective thicknesses of plates 5 and 6 may be substantially equal, for instance of the order of magnitude of 4 mm. in the case of a grenade to be launched by means of a gun.
  • the rear plate 6 forms a collar 6a bearing rearwardly against a shoulder 1a provided at the front end of sleeve 1 and turned toward the front.
  • the two armor plates 5 and 6 are caught between said shoulder in and the rear edge of the rear portion 2a of the war head 2 when securing the launching sleeve or casing 1 on said rear portion 2a.
  • the device above described has proved to be very efiicient, concerning the protection of the war head, when, due to a mistake of the rifleman, a normal ammunition, including a bullet, instead of the special ammunition including no bullet, is fired in the gun provided with a grenade.
  • a projectile to be launched by a firearm with a blank ammunition said projectile comprising, in combination, a war head, a tubular casing coaxial with said war head, said tubular casing being secured to the rear of said war head and adapted to fit on the end of a barrel of the firearm coaxially therewith, and two transverse metal plates including a front plate adjacent the war head and a rear plate adjacent the front plate and said plates being carried by said casing at the front thereof, said two plates forming a shield between the inside of said casing and said war head, said two plates having respective thicknesses of the same order of mag nitude and comprising metals of diiferent resistance such that the front plate is of less resistance to impact than the rear plate, whereby said rear plate is adapted to be 3 deformed Without being burst upon the impact of a bullet of a normal ammunition fired by mistake such as to brake the bullet so that the kinetic energy of the bullet may be absorbed by the less resistant front plate.
  • one of said plates has at its face adjacent the other of said plates a chamfered edge, said chamfered edge having a packing joint inserted along its surface, whereby said packing joint is disposed between the chamfered edge of one 4 plate, the face of the other plate, and the inside Wall of said casing.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
US239881A 1961-12-05 1962-11-26 Grenades and similar devices to be launched by a firearm Expired - Lifetime US3174431A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU40907A LU40907A1 (pt) 1961-12-05 1961-12-05

Publications (1)

Publication Number Publication Date
US3174431A true US3174431A (en) 1965-03-23

Family

ID=19722785

Family Applications (1)

Application Number Title Priority Date Filing Date
US239881A Expired - Lifetime US3174431A (en) 1961-12-05 1962-11-26 Grenades and similar devices to be launched by a firearm

Country Status (8)

Country Link
US (1) US3174431A (pt)
BE (1) BE624954A (pt)
CH (1) CH383216A (pt)
DE (1) DE1198247B (pt)
FR (1) FR1340063A (pt)
GB (1) GB972271A (pt)
LU (1) LU40907A1 (pt)
NL (1) NL286168A (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436961A1 (fr) * 1978-09-22 1980-04-18 Sarmac Sa Grenade a fusil explosive

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2456302A1 (fr) * 1979-05-08 1980-12-05 Moulin Prej Diffusion Piege-a-balle monobloc
GB8813065D0 (en) * 1988-06-02 1988-08-24 Galt Composites Ltd Bullet trap

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1313926A (en) * 1919-08-26 Frederick wilfrid scott stokes
US1900790A (en) * 1930-07-25 1933-03-07 Brandt Edgar William Grenade
US2498080A (en) * 1946-06-05 1950-02-21 Brandt Edgar Ets Projectile equipped with fins
US2699722A (en) * 1951-04-06 1955-01-18 Energa Projectile

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE679910C (de) * 1937-05-21 1939-08-16 Fritz Duerr Gewebhrgranate
GB572639A (en) * 1941-04-08 1945-10-17 Latham Valentine Stewart Black Improvements in and relating to grenades or bombs
FR1077082A (fr) * 1959-03-10 1954-11-04 Soc Tech De Rech Ind Dispositif de sécurité pour fusées

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1313926A (en) * 1919-08-26 Frederick wilfrid scott stokes
US1900790A (en) * 1930-07-25 1933-03-07 Brandt Edgar William Grenade
US2498080A (en) * 1946-06-05 1950-02-21 Brandt Edgar Ets Projectile equipped with fins
US2699722A (en) * 1951-04-06 1955-01-18 Energa Projectile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436961A1 (fr) * 1978-09-22 1980-04-18 Sarmac Sa Grenade a fusil explosive

Also Published As

Publication number Publication date
CH383216A (fr) 1964-10-15
BE624954A (pt)
NL286168A (pt)
DE1198247B (de) 1965-08-05
FR1340063A (fr) 1963-10-11
GB972271A (en) 1964-10-14
LU40907A1 (pt) 1963-06-05

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