US3916795A - Disintegrating projectile - Google Patents

Disintegrating projectile Download PDF

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Publication number
US3916795A
US3916795A US444118A US44411874A US3916795A US 3916795 A US3916795 A US 3916795A US 444118 A US444118 A US 444118A US 44411874 A US44411874 A US 44411874A US 3916795 A US3916795 A US 3916795A
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US
United States
Prior art keywords
cores
projectile
shell
cavities
metal powder
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
US444118A
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English (en)
Inventor
Herman Lemstra
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.)
Nederl Wapen & Munitie
NEDERLANDSCHE WAPEN- EN MUNITIEFABRIEK 'DE KRUITHOORN'+0 BV
Original Assignee
Nederl Wapen & Munitie
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 Nederl Wapen & Munitie filed Critical Nederl Wapen & Munitie
Application granted granted Critical
Publication of US3916795A publication Critical patent/US3916795A/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

  • ABSTRACT [30] Foreign Apphcauon Pmmty Data A disintegrating projectile provided with a number of Sept. 18, 1973 Netherlands 7312840 cores of compressed metal powder arranged axially one behind the other and enclosed within a shell of 52 US. Cl 102/927; 102/924 Synthetic plastics material, Said cores being provided [51] hit. Cl.
  • the present invention relates to a disintegrating projectile which comprises a number of cores of compressed metal powder arranged axially one behind another and enclosed within a shell of synthetic plastics material.
  • Such disintegrating projectiles commonly termed break-up shot, are known from US. Pat. No. 3,385,21S-Jung ermann issued May 28, 1968 and in particular are adapted as practice ammunition for artillery pieces having high rates of'fire, these projectiles disintegrating at a short distance from the barrel after emergencetherefrom due to the exercise of centrifugal force thereon. 1
  • the shell has a limited thickness and thus limited strength in the radial direction.
  • the present invention seeks to eliminate this danger by providing a disintegrating projectile of improved construction.
  • the above described projectile is designed in such a way that the cores are provided with recesses into which filler plugs or dowels are inserted to fix the cores relative to one another in the radial direction.
  • the filler plugs or dowels are necessarily made of compressed metal powder.
  • FIG. 1 shows a longitudinal section along the axis of a disintegrating projectile in which the dowels are integral with the cores.
  • FIG. 2 shows a longitudinal section, corresponding to FIG. 1, of another embodiment which is provided with loose dowels.
  • FIG. 3 shows a longitudinal section, corresponding to FIG. 1, of yet another embodiment
  • FIG. 4 shows partially in longitudinal section and partially in side view a preferred embodiment of a projectile according to the present invention.
  • the disintegrating projectile 1 mainly comprises a projectile shell 2 manufactured of synthetic plastics material, and a filling enclosed within the shell and comprising compressed metal powder cores and a filling.
  • the projectile shell has a converging leading portion 3 with a substantially cylindrical integral orjoined center portion 4.
  • This center portion of the projectile shell 2 is rigidly affixed to the rear portion 6 by means of, for example, an adhesive bonding medium, screw means, or by welding. Such means are irrelevant in this connection and therefore are not illustrated in FIGS. 1 to 3 inclusive.
  • the rear portion 6 can also be formed as one piece with the cylindrical center portion 4, when, at some position along the center portion, a junction point exists between the leading and center portions of the projectile shell 2.
  • the cylindrical center portions 4 of the projectile shells 2 are each provided with a driving band 5 which is of a somewhat greater diameter than the cylindrical center portion 4 and which is located on the rear half of the projectile shell.
  • the projectile shell 2 illustrated in FIG. 1 is filled with three cores 7, 8 and 9 and a metal powder filling in the rear end.
  • the rear end 10 of each core, behind which another core lies, has an axial recess 11, 12
  • the rearmost one of the cores 9 can have the same form as the core 8 lying forwardly thereof, and hence is also provided with an axial recess 13, which can be filled by the metal powder filling 10. These cores are then interchangeable positionwise.
  • the projectile shell illustrated in FIG. 2 is filled with three cores 16, 17 and 18 with a metal powder filling 19 in the rear end of the shell.
  • axially opposite recesses 20, 21, 22 and 23 are provided in the adjacent end surfaces of two adjacent cores.
  • dowels .27 and 28 are arranged, respectively. These dowels can completely, and also partially, fill the recesses provided care is taken that the dowels or at least the part in the region of the end surfaces, are a good fit in the recesses corresponding thereto. In this case, also the number of moulds used to produce the cores can be limited.
  • the rearmost one of the cores 18 has the same form as the core 17 lying forward thereto it can then be provided with an axial recess 29, which in this case can be filled with the metal powder filling 19.
  • the projectile shell illustrated in FIG. 3 is filled with five cores 31, 32, 33, 34 and 35 and a metal powder filling 42 in the rear end thereof. All of the cores, with the exception of the leading portion of the foremost one of the cores, are provided with axial recesses 36, 37, 38, 39 and 40 respectively. One, or more, of the dowels 41 are inserted in these recesses. The end surfaces of these dowels are not co-planar with those of the cores. The dowel, or dowels, 41 do not need to completely fill the recesses 36, 37, 38, 39 and 40 to the rear surface of the rearmost core. The remaining portion of the rearmost recess 40 can be filled with the metal powder filling 42.
  • the cylindrical center portion 4 is bonded to the rear portion 6 by means of an adhesive or by welding.
  • the projectile shell produced in this manner is filled with three cores 43, 44 and 45, and with a metal powder filling 46 in the rear portion and a filling 47 in the foremost portion of the projectile shell.
  • the invention is not limited to the details described above.
  • a random number of cores and/or dowels may be provided.
  • An inherent advantage of the embodiment in which the cores and the dowels are manufactured separately, is that this type of projectile is thus easily manufactured and homogeneous density can be better assured.
  • a disintegrating projectile comprising a shell of plastics material which includes a number of cores of compressed metal powder arranged axially one behind the other and'enclosed within said shell, said cores being provided with cavities, and plug means also of compressed metal powder arranged in said cavities and locating and fixing said cores relatively to one another in the radial direction of said projectile.
  • each plug means extends into a cavity in a core and is integral with an adjacent core.
  • each plug means extends into at least two recesses, located axially one behind the other, of two cores.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Materials For Medical Uses (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
US444118A 1973-09-18 1974-02-20 Disintegrating projectile Expired - Lifetime US3916795A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL737312840A NL145953B (nl) 1973-09-18 1973-09-18 Uiteenvalprojectiel.

Publications (1)

Publication Number Publication Date
US3916795A true US3916795A (en) 1975-11-04

Family

ID=19819630

Family Applications (1)

Application Number Title Priority Date Filing Date
US444118A Expired - Lifetime US3916795A (en) 1973-09-18 1974-02-20 Disintegrating projectile

Country Status (9)

Country Link
US (1) US3916795A (nl)
JP (2) JPS5056799A (nl)
BE (1) BE819980A (nl)
CH (1) CH580271A5 (nl)
FR (1) FR2244152B1 (nl)
GB (1) GB1465760A (nl)
NL (1) NL145953B (nl)
NO (1) NO136164C (nl)
ZA (1) ZA745439B (nl)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4603637A (en) * 1984-10-31 1986-08-05 The United States Of America As Represented By The Secretary Of The Air Force Variable density frangible projectile
US4708064A (en) * 1977-09-29 1987-11-24 Rheinmetall Gmbh Impact projectile
US4716834A (en) * 1980-03-27 1988-01-05 Rheinmetall Gmbh Inertial penetrator projectile
US4716835A (en) * 1986-05-23 1988-01-05 NWM de Kruithoorn B.V., Poeldonkweg Disintegrating projectile for cartridged maneuver ammunition
US4865328A (en) * 1984-03-16 1989-09-12 The United States Of America As Represented By The Secretary Of The Navy Low-cost, expendable, crushable target aircraft
US4958572A (en) * 1989-02-24 1990-09-25 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence Of Her Majesty's Canadian Government Non-ricocheting projectile and method of making same
US5375529A (en) * 1991-10-18 1994-12-27 Snc Industrial Technologies Inc./Les Technologies Industrielles Snc Inc. Prefragmenting munitions
US5834683A (en) * 1996-08-07 1998-11-10 Fiocchi Munizioni S.P.A. Projectile having features of high deformability on impact
US5900577A (en) * 1997-01-29 1999-05-04 Zdf Import Export Inc Modular, multi-caliber weapon system
WO2000055569A3 (en) * 1999-03-08 2001-03-08 Harold F Beal A multi-part projectile and method of making
WO2001069165A2 (en) * 2000-03-08 2001-09-20 Beal Harold F A multi-part projectile and method of making
WO2005003677A3 (en) * 2003-07-04 2005-06-16 I M Z S P A Method of making inactive ballistic exercise elements and inactive ballistic element made by said method
US20100212535A1 (en) * 2007-07-11 2010-08-26 Beal Harold F Traceable Frangible Projectile
US11221199B2 (en) * 2019-04-05 2022-01-11 Vista Outdoor Operations Llc High velocity, rimfire cartridge

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE427694B (sv) * 1979-04-02 1983-04-25 Bofors Ab Speciellt for utbilndningsendamal anvendbar fullkalibrig ovningsgranat

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US175400A (en) * 1876-03-28 Improvement in shot-cartridges
US1252325A (en) * 1914-09-22 1918-01-01 John Anderson Davison Bullet.
US2617358A (en) * 1948-11-11 1952-11-11 Vecchiotti Ado Shotgun cartridge
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
US3680485A (en) * 1969-12-08 1972-08-01 Colt S Inc Salvo squeezebore projectile

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1199592B (de) * 1962-07-26 1965-08-26 Mannesmann Ag Verfahren zum Herstellen leicht zerberstender Geschosskerne fuer UEbungsmunition

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US175400A (en) * 1876-03-28 Improvement in shot-cartridges
US1252325A (en) * 1914-09-22 1918-01-01 John Anderson Davison Bullet.
US2617358A (en) * 1948-11-11 1952-11-11 Vecchiotti Ado Shotgun cartridge
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
US3680485A (en) * 1969-12-08 1972-08-01 Colt S Inc Salvo squeezebore projectile

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4708064A (en) * 1977-09-29 1987-11-24 Rheinmetall Gmbh Impact projectile
US4716834A (en) * 1980-03-27 1988-01-05 Rheinmetall Gmbh Inertial penetrator projectile
US4865328A (en) * 1984-03-16 1989-09-12 The United States Of America As Represented By The Secretary Of The Navy Low-cost, expendable, crushable target aircraft
US4603637A (en) * 1984-10-31 1986-08-05 The United States Of America As Represented By The Secretary Of The Air Force Variable density frangible projectile
US4716835A (en) * 1986-05-23 1988-01-05 NWM de Kruithoorn B.V., Poeldonkweg Disintegrating projectile for cartridged maneuver ammunition
US4958572A (en) * 1989-02-24 1990-09-25 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence Of Her Majesty's Canadian Government Non-ricocheting projectile and method of making same
US5375529A (en) * 1991-10-18 1994-12-27 Snc Industrial Technologies Inc./Les Technologies Industrielles Snc Inc. Prefragmenting munitions
US5834683A (en) * 1996-08-07 1998-11-10 Fiocchi Munizioni S.P.A. Projectile having features of high deformability on impact
US5900577A (en) * 1997-01-29 1999-05-04 Zdf Import Export Inc Modular, multi-caliber weapon system
US6317946B1 (en) * 1997-01-30 2001-11-20 Harold F. Beal Method for the manufacture of a multi-part projectile for gun ammunition and product produced thereby
WO2000055569A3 (en) * 1999-03-08 2001-03-08 Harold F Beal A multi-part projectile and method of making
WO2001069165A2 (en) * 2000-03-08 2001-09-20 Beal Harold F A multi-part projectile and method of making
WO2001069165A3 (en) * 2000-03-08 2002-02-28 Harold F Beal A multi-part projectile and method of making
WO2005003677A3 (en) * 2003-07-04 2005-06-16 I M Z S P A Method of making inactive ballistic exercise elements and inactive ballistic element made by said method
US20060266249A1 (en) * 2003-07-04 2006-11-30 Giuliano Illesi Method of making inactive ballistic exercise elements and inactive ballistic element made by said method
US7644663B2 (en) * 2003-07-04 2010-01-12 Industria Meccanica Zane' SRL Method of making inactive ballistic exercise elements and inactive ballistic element made by said method
US20100212535A1 (en) * 2007-07-11 2010-08-26 Beal Harold F Traceable Frangible Projectile
US11221199B2 (en) * 2019-04-05 2022-01-11 Vista Outdoor Operations Llc High velocity, rimfire cartridge

Also Published As

Publication number Publication date
FR2244152B1 (nl) 1979-01-05
GB1465760A (en) 1977-03-02
JPS5056799A (nl) 1975-05-17
BE819980A (nl) 1975-03-17
NO136164B (no) 1977-04-18
DE2440260B2 (de) 1976-06-10
NO743350L (nl) 1975-04-14
DE2440260A1 (de) 1975-03-20
NL145953B (nl) 1975-05-15
CH580271A5 (nl) 1976-09-30
JPS5441600Y2 (nl) 1979-12-05
JPS5461000U (nl) 1979-04-27
ZA745439B (en) 1975-08-27
FR2244152A1 (nl) 1975-04-11
NL7312840A (nl) 1975-03-20
NO136164C (no) 1977-07-27

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