US3439619A - Practice ammunition - Google Patents

Practice ammunition Download PDF

Info

Publication number
US3439619A
US3439619A US652188A US3439619DA US3439619A US 3439619 A US3439619 A US 3439619A US 652188 A US652188 A US 652188A US 3439619D A US3439619D A US 3439619DA US 3439619 A US3439619 A US 3439619A
Authority
US
United States
Prior art keywords
projectile
mantle
housing
practice ammunition
synthetic material
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
US652188A
Inventor
Erich Bock
Max Rentzsch
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.)
Diehl Verwaltungs Stiftung
Original Assignee
Diehl GmbH and Co
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 Diehl GmbH and Co filed Critical Diehl GmbH and Co
Application granted granted Critical
Publication of US3439619A publication Critical patent/US3439619A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00Blasting cartridges, i.e. case and explosive
    • F42B3/10Initiators therefor
    • F42B3/16Pyrotechnic delay initiators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/72Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
    • F42B12/76Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the casing

Definitions

  • the housing is of synthetic material, preferably a glass fiber reinforced polyester with the glass fibers in said cylindrical portion oriented in the longitudinal direction of the housing and with the glass fibers in the bottom crossing each other.
  • the present invention relates to practice ammunition for firing from rifled barrels, the disintegration projectile of which comprises a mantle forming a container of synthetic material and also comprises a core of heavy powder, preferably iron powder compressed to a body.
  • a projectile is provided with a relatively thick container wall and, in particular, with a strong bottom in order to withstand high stresses, which bottom alone resists the propulsion charge necessary for a quick firing sequence and automatic feeding, it is difiicult to disintegrate these parts into corresponding small particles or, expressed differently, to eliminate any piercing force over a short distance.
  • FIG. 1 represents a longitudinal section through a practice disintegrating projectile with a mantle according to the present invention.
  • FIGS. 2 and 3 diagrammatically illustrate a bottom view of the mantle according to FIG. 1 in a pre-manufacturing stage.
  • the projectile container or mantle according to the present invention is characterized primarily in that it consists of glass fiber reinforced synthetic material, especially a polyester. Furthermore, the glass fiber material is length oriented on the cylindrical wall and the glass fibers at the bottom may be placed so as to cross each other.
  • the projectile container or mantle comprises an envelope or casing 1 of synthetic material, as for instance a polyester, which has the shape of a projectile with a blunted nose 2 and an obturator head 3, as well as a reinforced bottom 4 and a compressed powder disintegration body 5.
  • Embedded in the said synthetic material which is preferably a polyester are glass fiber inserts 6, 7 which are poured or injected into the synthetic material and are longitudinally oriented in the mantle wall 8.
  • the said glass fiber inserts extend from the bottom 4 to the tip 2, whereas in the bottom 4 itself they are transversely oriented and are crosswise or at a different angle arranged in layers.
  • the mantle 8 of the illustrated projectile 1 is in view of the glass fiber inserts 6, 7; 9, 10, 11 stable in longitudinal direction and is also non-sensitive against shocks acting radially from the outside.
  • the bottom 4 has a great strength so that it will be able to withstand the propelling charge pressure required for a fast firing sequence.
  • the practice ammunition provided with such a projectile is suitable for roughest handling and thus meets the first requirement above referred to.
  • a projectile shaped housing of synthetic material reinforced by glass fibers which includes: a projectile shaped housing of synthetic material reinforced by glass fibers, a core of powder within said housing, said housing having a relatively long and narrow cylindrical portion and a blunted nose portion and being closed by a bottom of synthetic material reinforced by glass fibers crossing each other, the glass fibers in said cylindrical portion of said housing being oriented in the longitudinal direction of said cylindrical portion.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Description

April 22, 1969 BOCK ET AL 3,439,619
PRACTICE AMMUNITION Filed July 10, 1967 INVFNT'OHS' 6712/1 .BOCA/ Mu Pan-25c United States Patent 3,439,619 PRACTICE AMMUNITION Erich Bock, Schwaig, and Max Rentzsch, Furth, Germany, assignors to Diehl, Nuremberg, Germany Filed July 10, 1967, Ser. No. 652,188 Claims priority, applicatign Ggrmany, July 16, 1968,
Int. Cl. F42b 13/20 US. Cl. 102-92.7 2 Claims ABSTRACT OF THE DISCLOSURE The present invention is characterized primarily in that the housing is of synthetic material, preferably a glass fiber reinforced polyester with the glass fibers in said cylindrical portion oriented in the longitudinal direction of the housing and with the glass fibers in the bottom crossing each other.
The present invention relates to practice ammunition for firing from rifled barrels, the disintegration projectile of which comprises a mantle forming a container of synthetic material and also comprises a core of heavy powder, preferably iron powder compressed to a body.
Practice ammunition has to meet the requirement that similar to live ammunition it can be belted or filled into a magazine and when it is mechanically automatically fed, it must be able to be fired in the same quick sequence as live ammunition, but on the other hand, when leaving the mouth of the barrel, it must when being fired not only disintegrate fast but, above all, must disintegrate into non-dangerous particles. These two requirements, however, oppose each other. If a projectile is provided with a relatively thick container wall and, in particular, with a strong bottom in order to withstand high stresses, which bottom alone resists the propulsion charge necessary for a quick firing sequence and automatic feeding, it is difiicult to disintegrate these parts into corresponding small particles or, expressed differently, to eliminate any piercing force over a short distance.
It is, therefore, an object of the present invention to provide a projectile container or mantle which will overcome the above mentioned drawbacks.
It is another object of this invention to provide a projectile container or mantle which, on one hand, will have the necessary shock and pressure resistance to withstand the forces occurring with automatic feeding and which, on the other hand, will have a bottom adapted to withstand relatively high stresses caused by the propulsion charge and which will not be deformed so that the press ltre will be uniformly distributed over the entire project] c.
It is another object of this invention to provide a projectile container or mantle which following the firing will already over a short distance disintegrate into nondangerous individual particles.
3,439,619 Patented Apr. 22, 1969 ice These and other objects and advantages of the invention will appear more clearly from the following specification in connection with the accompanying drawing, in which:
FIG. 1 represents a longitudinal section through a practice disintegrating projectile with a mantle according to the present invention.
FIGS. 2 and 3 diagrammatically illustrate a bottom view of the mantle according to FIG. 1 in a pre-manufacturing stage.
The projectile container or mantle according to the present invention is characterized primarily in that it consists of glass fiber reinforced synthetic material, especially a polyester. Furthermore, the glass fiber material is length oriented on the cylindrical wall and the glass fibers at the bottom may be placed so as to cross each other.
Referring now to the drawing in detail, the projectile container or mantle comprises an envelope or casing 1 of synthetic material, as for instance a polyester, which has the shape of a projectile with a blunted nose 2 and an obturator head 3, as well as a reinforced bottom 4 and a compressed powder disintegration body 5. Embedded in the said synthetic material which is preferably a polyester are glass fiber inserts 6, 7 which are poured or injected into the synthetic material and are longitudinally oriented in the mantle wall 8. In other words, the said glass fiber inserts extend from the bottom 4 to the tip 2, whereas in the bottom 4 itself they are transversely oriented and are crosswise or at a different angle arranged in layers.
The overlapping of two glass fiber layers 6, 7 is evident from FIG. 2, whereas the overlapping of three reinforcing inserts 9, 10, 11 is evident from FIG. 3, the bottom 4 to be formed later is indicated by dash lines.
The mantle 8 of the illustrated projectile 1 is in view of the glass fiber inserts 6, 7; 9, 10, 11 stable in longitudinal direction and is also non-sensitive against shocks acting radially from the outside. The bottom 4 has a great strength so that it will be able to withstand the propelling charge pressure required for a fast firing sequence. The practice ammunition provided with such a projectile is suitable for roughest handling and thus meets the first requirement above referred to.
When firing the projective from a rifled barrel, high centrifugal forces become effective which act from the inside toward the outside. While the projectile is held together within the barrel by means of said barrel, and while the projectile is relatively rigid in axial direction in View of the longitudinal orientation of the glass fiber inserts, it will tear for instance in view of a non-illustrated crosswise weakening of the mantle 1, 8 from the tip 2. In this direction, the glass fiber inserts '6, 7; 9, 10, 11 do not exert a stiffening or holding together effect. The core 5 is freed and disintegrates in a manner known per se into its original ingredients. The torn open relatively light mantle, however, as far as it is not torn into smallest particles or fibers, has such a high air resistance value that it will drop to the ground at a short distance from the barrel mouth.
It may also be mentioned that besides chloric unsaturated polyester dissolved in styrene (known under the trademark Palatal 5 310 of BASF) some other materials could be used, for instance, epoxy resin (known under the trademark Araldite Ly 556).
What we claim is:
1. Practice ammunition for firing from a drawn barrel,
which includes: a projectile shaped housing of synthetic material reinforced by glass fibers, a core of powder within said housing, said housing having a relatively long and narrow cylindrical portion and a blunted nose portion and being closed by a bottom of synthetic material reinforced by glass fibers crossing each other, the glass fibers in said cylindrical portion of said housing being oriented in the longitudinal direction of said cylindrical portion.
2. Practice ammunition for firing from a drawn barrel, which includes: a projectile shaped housing of synthetic material reinforced by glass fibers, a core of powder within said housing, said housing having a relatively long and narrow cylindrical portion with a blunted nose 4 portion, the glass fibers in said cylindrical portion of said housing being oriented in the longitudinal direction of said cylindrical portion.
References Cited UNITED STATES PATENTS 2,872,865 2/1959 Skaar 102-56 3,000,308 9/1961 Land et al. 102-56 3,081,705 3/1963 Warnken 102-105 3,170,405 2/1965 Jungermann et al. 102-41 X 3,242,865 3/1966 Jungermann et a1. 102-41 X ROBERT F. STAHL, Primary Examiner.
US652188A 1966-07-16 1967-07-10 Practice ammunition Expired - Lifetime US3439619A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0050599 1966-07-16

Publications (1)

Publication Number Publication Date
US3439619A true US3439619A (en) 1969-04-22

Family

ID=7052777

Family Applications (1)

Application Number Title Priority Date Filing Date
US652188A Expired - Lifetime US3439619A (en) 1966-07-16 1967-07-10 Practice ammunition

Country Status (8)

Country Link
US (1) US3439619A (en)
AT (1) AT268937B (en)
BE (1) BE699958A (en)
CH (1) CH475542A (en)
DE (1) DE1578109C3 (en)
GB (1) GB1149658A (en)
NL (1) NL6708528A (en)
SE (1) SE320006B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785293A (en) * 1970-12-31 1974-01-15 Aai Corp Practice ammunition
US3848532A (en) * 1971-09-24 1974-11-19 Aai Corp Projectile and cartridge arrangement
US3861311A (en) * 1973-07-13 1975-01-21 Us Air Force Plastic semi armor piercing incendiary projectile
US3865038A (en) * 1973-07-13 1975-02-11 Irwin R Barr Deterrent ammunition projectile
US3902683A (en) * 1973-11-07 1975-09-02 Us Air Force Plastic frangible training projectile
EP0626557A1 (en) * 1993-05-27 1994-11-30 Royal Ordnance plc Practice projectile made of sintered metal powder
WO1997009582A1 (en) * 1995-09-08 1997-03-13 Snc Industrial Technologies Inc./Les Technologies Bedding and training round for mortars
US6090178A (en) * 1998-04-22 2000-07-18 Sinterfire, Inc. Frangible metal bullets, ammunition and method of making such articles
EP1484573A1 (en) * 2003-06-04 2004-12-08 United Defense, L.P. Non-lethal projectile

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2357137A (en) * 1999-12-08 2001-06-13 Gamebore Cartridge Company Ltd Frangible projectile

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2872865A (en) * 1955-09-29 1959-02-10 Karsten S Skaar High strength fiber glass-metal construction and process for its manufacture
US3000308A (en) * 1956-03-07 1961-09-19 William E Land High explosive composition
US3081705A (en) * 1958-05-09 1963-03-19 Studebaker Corp Articles having laminated walls
US3170405A (en) * 1962-03-17 1965-02-23 Karlsruhe Augsburg Iweka Disintegrating training ammunition for firearms
US3242865A (en) * 1963-03-27 1966-03-29 Karlsruhe Augsburg Iweka Projectile

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2872865A (en) * 1955-09-29 1959-02-10 Karsten S Skaar High strength fiber glass-metal construction and process for its manufacture
US3000308A (en) * 1956-03-07 1961-09-19 William E Land High explosive composition
US3081705A (en) * 1958-05-09 1963-03-19 Studebaker Corp Articles having laminated walls
US3170405A (en) * 1962-03-17 1965-02-23 Karlsruhe Augsburg Iweka Disintegrating training ammunition for firearms
US3242865A (en) * 1963-03-27 1966-03-29 Karlsruhe Augsburg Iweka Projectile

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785293A (en) * 1970-12-31 1974-01-15 Aai Corp Practice ammunition
US3848532A (en) * 1971-09-24 1974-11-19 Aai Corp Projectile and cartridge arrangement
US3861311A (en) * 1973-07-13 1975-01-21 Us Air Force Plastic semi armor piercing incendiary projectile
US3865038A (en) * 1973-07-13 1975-02-11 Irwin R Barr Deterrent ammunition projectile
US3902683A (en) * 1973-11-07 1975-09-02 Us Air Force Plastic frangible training projectile
EP0626557A1 (en) * 1993-05-27 1994-11-30 Royal Ordnance plc Practice projectile made of sintered metal powder
WO1997009582A1 (en) * 1995-09-08 1997-03-13 Snc Industrial Technologies Inc./Les Technologies Bedding and training round for mortars
US6090178A (en) * 1998-04-22 2000-07-18 Sinterfire, Inc. Frangible metal bullets, ammunition and method of making such articles
US6263798B1 (en) 1998-04-22 2001-07-24 Sinterfire Inc. Frangible metal bullets, ammunition and method of making such articles
EP1484573A1 (en) * 2003-06-04 2004-12-08 United Defense, L.P. Non-lethal projectile

Also Published As

Publication number Publication date
NL6708528A (en) 1968-01-17
BE699958A (en) 1967-11-16
CH475542A (en) 1969-07-15
DE1578109C3 (en) 1973-09-27
AT268937B (en) 1969-02-25
DE1578109A1 (en) 1971-06-16
SE320006B (en) 1970-01-26
GB1149658A (en) 1969-04-23
DE1578109B2 (en) 1973-02-01

Similar Documents

Publication Publication Date Title
US3496869A (en) Sabot projectile
US3911824A (en) Deterrent ammunition projectile
US3865038A (en) Deterrent ammunition projectile
US3338167A (en) Disintegrating training ammunition for firearms
US4671181A (en) Anti-tank shell
US3791303A (en) Deterrent ammunition
US3439619A (en) Practice ammunition
US3762332A (en) Projectile sabot
US3744426A (en) Rotary sabot projectile
US4446794A (en) Practice shell particularly useful for training purposes
US3902424A (en) Projectile
US3580179A (en) Ammunition for target practice or other short-range purposes
US3394905A (en) Shotgun bullet
US3661086A (en) Hollow charge construction
US4080900A (en) Projectile
US4574703A (en) High velocity ammunition sabot
US4953466A (en) Propulsion cage for a subcaliber projectile
US3882779A (en) Explosive projectile
US3894492A (en) Deterrent ammunition
NO884373L (en) Post for warhead.
US1973604A (en) Projectile
US3318244A (en) Cartridge
US2837996A (en) Explosive charge
US3662686A (en) Rod and sabot assembly
US3289585A (en) Shell construction