EP0895573A1 - Projectile a expansion - Google Patents

Projectile a expansion

Info

Publication number
EP0895573A1
EP0895573A1 EP97917169A EP97917169A EP0895573A1 EP 0895573 A1 EP0895573 A1 EP 0895573A1 EP 97917169 A EP97917169 A EP 97917169A EP 97917169 A EP97917169 A EP 97917169A EP 0895573 A1 EP0895573 A1 EP 0895573A1
Authority
EP
European Patent Office
Prior art keywords
collar
expansion
mandrel
dome
tip
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
EP97917169A
Other languages
German (de)
English (en)
Other versions
EP0895573B1 (fr
Inventor
Udo Winter
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0895573A1 publication Critical patent/EP0895573A1/fr
Application granted granted Critical
Publication of EP0895573B1 publication Critical patent/EP0895573B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/34—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect expanding before or on impact, i.e. of dumdum or mushroom type

Definitions

  • the invention relates to an expansion projectile with a projectile body which forms a central mandrel on the end face and a collar which coaxially surrounds the dome, the collar having an outer shape which tapers towards the free collar edge and a cavity which is open towards the front is provided between the collar and the mandrel.
  • Expansion projectiles which mushroom when hitting a soft target medium through cavities open to the front in the area of the projectile tip and which result in a great shock effect due to the associated expansion, are available in a wide variety of design variants and according to US Pat. No. 3,881,421 it is also known, form a forward-facing, butt-rounded mandrel within this cavity in order to open the medium through the protruding mandrel and to facilitate the expansion upon penetration into the target medium after the collar surrounding the mandrel has first been expanded.
  • These bullets usually consist of a core of soft but heavy metal, in particular lead, in order to achieve a sufficient bullet weight despite the cavity, and of a bullet jacket of hard metal, preferably copper, copper alloys or soft iron, in order to improve the firing conditions through a gun barrel.
  • a bullet jacket of hard metal preferably copper, copper alloys or soft iron
  • the expansion projectiles made of lead or with a lead core give off splinters when mushrooming in the soft target material, or at least when they penetrate the target medium, there is considerable lead abrasion on the surface of the deformed projectile, which is associated with a very undesirable dangerous contamination, so that the aim is to largely avoid lead and lead alloys in the manufacture of bullets.
  • the known expansion bullets show only little penetration through their expansion effect when hitting hard target material and can therefore be used practically only for special ammunition.
  • the cavities at the top of the projectile often lead to difficulties in feeding a cartridge from the magazine into the barrel of a self-loading weapon, which in some cases already requires the cavity to be sealed off by a special cap, which cap, however, as shown in US Pat. No. 4,136,616, the projectile manufacture is considerably complicated and yet does not provide any security against jamming.
  • the invention is therefore based on the object to remedy these shortcomings and to create an expansion storey of the type described, which can be rationally manufactured as a monoblock storey without the use of lead or lead alloys, which is characterized by its diverse range of uses and penetrates into soft target medium without splinters and which is not least fully automatic weapon-compatible.
  • the dome consists of a shaft and tip in a manner known per se, that the collar touches the mandrel at least in the transition region between shaft and tip and that the dome projects at least into the axial height region of the collar edge.
  • the result is a one-piece projectile body which can be produced comparatively inexpensively in a multi-stage pressing operation from a cylindrical starting material, so that this monoblock projectile can also be produced as desired from copper, a copper alloy, such as tombac, or soft iron. Since the collar and dome only leave a relatively small cavity, a relatively high weight is achieved in comparison to other expansion floors, which means that there is no need for lead cores. Like. Made possible without loss of weft power.
  • the spike which protrudes with its tip up to the collar edge or beyond, results in a small cavity with the surrounding collar edge that it is sufficient to roll up and mushroom the collar when it hits soft target medium, which expansion through the leading dome is improved accordingly, but that when the projectile hits the hard target medium it no longer causes such mushrooming and when the collar is pressed against the top of the dome and the projectile reacts like a solid jacket projectile. Therefore, splinter-free expansions with a high shock effect are achieved on the one hand in the soft target medium and on the other hand large penetration effects are achieved in the hard target medium.
  • the free height of the collar from the transition area between the shaft and tip of the dome on the inside to the edge of the collar is at most the length of a surface line of the dome tip running in an axial plane from this transition area to the axis, so that when pressing on the face side of the collar edge to the dome tip the collar edge cannot be pressed together over the mandrel tip, which would entail the risk of rolling up.
  • the correspondingly towering dome also leads to a high dimensional stability of the projectile, which has favorable ballistic properties and, above all, avoids difficulties in feeding the projectile to the barrel of self-loading weapons.
  • the shaft has an essentially axially symmetrical shape with straight axially parallel or tending generators and the adjoining tip has an obtuse-angled axial section, there are favorable conditions for the production of the projectile body by means of a pressing process and it is possible to properly fit the collar To be able to create the shaft and tip of the cathedral, which is particularly important in the tip area of the cathedral when hitting hard target medium.
  • the shaft of the dome will usually be cylindrical or frustoconical, but it is also possible to make the shaft prismatic or frustum of a pyramid, which is when the collar is placed on the tip and shaft along the edges notch-related predetermined breaking points, which facilitates mushrooming of the collar by dividing it into strips.
  • the projectile diameter tapers towards the tip more than through the pure outer shape of the collar, which improves the suitability of the projectile for self-loading weapons.
  • the collar can also be pressed against the dome tip in the edge area, which minimizes the size of the cavity that is open to the front and can increase the suitability of the projectile as a solid jacket projectile.
  • the collar can have predetermined breaking points in the edge area which, by striping the collar in strips, makes it easier for the collar to roll up against the direction of the weft. It is possible to provide the predetermined breaking points by means of notches or the like on the inner or outer surface of the jacket or only on the edge of the collar.
  • a hard material covering can be put on the dome, whereby the weight of the projectile can also be influenced.
  • the projectile body has a recess on the base, which optionally extends into the mandrel.
  • This recess can remain hollow in order to reduce the weight of the projectile, but it can also be filled with specifically heavy material, such as tungsten, wsmuth, etc., in order to increase the weight, and it also offers the possibility of filling in a chemical mass which produces a trace of light when fired.
  • the dome has a hollow that is open towards the top, the expansion effect can be increased even more in special cases, since both the collar and the dome roll up when it hits soft target medium.
  • the subject matter of the invention is illustrated schematically, that is to say
  • FIG. 5 a modified embodiment of an inventive
  • FIG. 6 shows another embodiment of an expansion storey in cross section
  • FIGS. 13 to 15 show the manufacture of an expansion storey according to the invention using three manufacturing steps, each in the functional diagram.
  • an expansion floor 1 consists of a floor body 2 which merges into a central dome 3 and a collar 4 coaxially surrounding the dome, the collar 4 having an outer shape 6 tapering towards the collar edge 5 and between the collar 4 and dome 3, a cavity 7 open to the front is provided.
  • the projectile body 2 is produced as a monoblock, preferably of copper or a copper alloy or of soft iron, and to increase the weight based on the total volume, the dome 3 and collar 4 are largely pressed close together.
  • the dome 3 forms a shaft 31 and a tip 32, it projects up to the axial height area of the collar edge 5 and the collar 4 touches the shaft 3 at least in the transition area 33 between the shaft 31 and the tip 32.
  • the expansion effects or full jacket effects can be influenced as desired, predetermined breaking points 8 in the edge region of the collar 4 leading to a segment-shaped rolling up of the collar 4 against the weft direction and thus additionally improving the expansion.
  • the collar 4 of the projectile 1 Due to the towering mandrel 3 and the contact between the dome 3 and the collar 4 in the transition region 33 from the shaft 31 to the tip 32, the collar 4 of the projectile 1 is supported on the inside in a dimensionally stable manner, which results in favorable ballistic properties and is also suitable for self-loading weapons is.
  • the expansion floor according to the invention can be adapted in different ways to special tasks and writings without having to change the basic structure:
  • the base body 102 is equipped with a mandrel 103 and a collar 104, which collar 104 only touches the dome 103 in the transition area 133 between the shaft 131 and the tip 132, so that between the collar 104 and the dome 131 an annular gap 171 remains, which reduces the press-in resistance of the projectile 101 into the trains of a gun barrel.
  • This annular gap 171 does not contribute to the expansion effect due to the open cavity 107 between the mandrel tip 132 and the collar edge 105.
  • the dome 103 can also have a hollow 115 which is open towards the top 132, as a result of which the collar 104 and dome 103 mushroom when they hit awake target medium and the expansion effect is intensified. In addition, this cavity 115 contributes to increasing the radial elasticity of the base body 102.
  • the dome 203 can have a polygonal, for example hexagonal cross-section, so that the edges 234 pressed into the inner wall 241 of the collar 204 result in predetermined breaking points which, similar to the notches 8 in the area of the Collar edge 5 according to FIGS. 1 and 2 act and facilitate the rolling up of the collar 204 when it hits soft target medium.
  • the expansion storey 301 with its base body 302 forms a mandrel 303, which has an axially symmetrical shape with straight generatrix E, which tends forward to the axis A, a truncated cone resulting from a circular cross section or a truncated pyramid from a polygonal cross section.
  • the associated collar 304 conforms to the dome 331.
  • the tip 332 adjoining the shaft 331 has an obtuse tapered axial section, ie in the axial section the opening angle ⁇ is at least 90 °.
  • an expansion storey 401 is provided, in which the collar 404 is pressed against the dome 403 along the entire inner wall, so that the region of the collar edge 405 also rests on the surface of the dome tip 432. Only a very small cavity 407, which is open to the front, remains, which increases the full-shell effect of the projectile.
  • the expansion floor 501 is designed to be able to penetrate particularly hard objects, for which purpose a hard material casing 9, for example a steel cap, is put on the dome 503.
  • a hard material casing 9 for example a steel cap
  • the collar 504 is largely pressed against the hard material sleeve 9, which has a shape conforming to the mandrel 503, to ensure that the smallest possible cavity 507 is open to the front.
  • an expansion storey 601 is illustrated, the storey body 602 of which merges into a mandrel 603 and a collar 604 which lies coaxially against the dome.
  • the projectile body 602 is, however, provided with a recess 10 which is open at the bottom and which, for example, receives a chemical mass which produces a tracer during firing, but can also remain hollow to influence the projectile weight or can be filled with specifically heavy material.
  • an expansion projectile 701 that can be used for hunting is shown, in which the mandrel 703 projects with a slender tip 732 over the edge 705 of the collar 704.
  • a similar hunting expansion projectile 801 is illustrated, the mandrel 803 of which in turn has a blunt dome tip 832 up to the axial height. position of the collar edge 805 of the collar 804 protrudes.
  • the projectile body 802 is here provided with a recess 810 on the base and is equipped with an additional weight 11 made of specifically heavy material, such as tungsten or wsmuth, but also lead.
  • an expansion projectile 1 according to the invention can be produced in a few steps by a pressing process largely without machining, whereby a cylindrical blank 1a is assumed.
  • this blank 1a is introduced into a pressing tool 12 with a die 13 and punch 14 and, in a first pressing step, pressed into a truncated cone-shaped blank 1b with a mandrel and collar.
  • This raw form 1b comes in the following pressing step according to FIG.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Toys (AREA)
  • Building Environments (AREA)
  • Glass Compositions (AREA)
  • Inorganic Insulating Materials (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Golf Clubs (AREA)

Abstract

Ce projectile à expansion (1) comprend un corps (2) et forme du côté frontal une broche centrale (3) entourée d'un collet coaxial (4) qui a une forme extérieure conique (6) se rétrécissant vers le bord libre (5) du collet, une cavité (7) ouverte en avant étant ménagée entre le collet (4) et la broche (3). Afin d'obtenir de manière rationnelle un projectile monobloc sans plomb très efficace et polyvalent, la broche (3) est constituée de manière connue en soi d'une tige (31) et d'une pointe (32), le collet (4) touche la broche (3) au moins dans la zone de transition (33) entre la tige (31) et la pointe (32), et la broche (3) s'étend au moins jusqu'à la hauteur axiale du bord (5) du collet.
EP97917169A 1996-04-24 1997-04-24 Projectile a expansion Expired - Lifetime EP0895573B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT739/96 1996-04-24
AT73996 1996-04-24
AT0073996A AT405977B (de) 1996-04-24 1996-04-24 Expansionsgeschoss
PCT/AT1997/000078 WO1997040334A1 (fr) 1996-04-24 1997-04-24 Projectile a expansion

Publications (2)

Publication Number Publication Date
EP0895573A1 true EP0895573A1 (fr) 1999-02-10
EP0895573B1 EP0895573B1 (fr) 2000-05-24

Family

ID=3498527

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97917169A Expired - Lifetime EP0895573B1 (fr) 1996-04-24 1997-04-24 Projectile a expansion

Country Status (9)

Country Link
US (1) US6148731A (fr)
EP (1) EP0895573B1 (fr)
AT (2) AT405977B (fr)
AU (1) AU717451B2 (fr)
CA (1) CA2253375C (fr)
DE (1) DE59701769D1 (fr)
ES (1) ES2147987T3 (fr)
PT (1) PT895573E (fr)
WO (1) WO1997040334A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2795170B1 (fr) * 1999-06-18 2002-06-28 Jean Claude Sauvestre Balle a fleche interne portee
US6244186B1 (en) * 1999-07-26 2001-06-12 Joseph F. L. John Pichard Air gun pellet
US6837165B2 (en) * 2001-11-09 2005-01-04 Olin Corporation Bullet with spherical nose portion
CZ20021869A3 (cs) 2002-05-30 2004-01-14 Vlastimil Libra Průbojná podkaliberní střela
BE1015436A3 (fr) * 2003-03-24 2005-04-05 Denis Jean Paul Louis Projectile d'arme a feu.
US7966937B1 (en) 2006-07-01 2011-06-28 Jason Stewart Jackson Non-newtonian projectile
US8789470B2 (en) * 2011-02-07 2014-07-29 Olin Corporation Segmenting slug
US20150090147A1 (en) * 2013-10-01 2015-04-02 Ward Kraft, Inc. Customizable Projectile Designed for Separation
US9354027B2 (en) 2013-10-24 2016-05-31 G2 Research Inc. Fragmenting projectile
CA2940332A1 (fr) * 2014-02-25 2015-09-03 Ruag Ammotec Gmbh Projectile a deformation enduit
US10663271B2 (en) 2016-10-13 2020-05-26 G2 Research Inc. Predictably fragmenting projectiles having internally-arranged geometric features
US10551154B2 (en) * 2017-01-20 2020-02-04 Vista Outdoor Operations Llc Rifle cartridge with improved bullet upset and separation
US10690464B2 (en) 2017-04-28 2020-06-23 Vista Outdoor Operations Llc Cartridge with combined effects projectile
US10443990B2 (en) * 2017-06-08 2019-10-15 Connor Yadon Fragmenting shotgun projectile with radially-disposed segments
DE102017011359A1 (de) 2017-12-08 2019-06-13 Ruag Ammotec Gmbh Intermediat zum Fertigen von Projektilen eines Deformationsgeschosses, Projektil, deformiertes Projektil, Werkzeug zum Fertigen des Intermediats und Verfahren zum Herstellen des Intermediats
US11226185B2 (en) 2018-06-05 2022-01-18 Wayne B. Norris Projectile having adaptive expansion characteristics
DE102022121811A1 (de) 2022-08-29 2024-02-29 Rws Gmbh Geschoss mit reduzierter Laufbelastung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4044685A (en) * 1971-06-18 1977-08-30 Hirtenberger Patronen-, Zundhutchen- Und Metallwarenfabrik Aktiengesellschaft Jacketless hunting bullet with roll-back cutting flags
US3881421A (en) * 1974-02-14 1975-05-06 Thomas J Burczynski Bullet
FI69367C (fi) * 1975-08-09 1986-01-10 Schirnecker Hans Ludwig Kula foer finkalibrigt vapen
DE2541632A1 (de) * 1975-09-18 1977-03-24 Schirnecker Hans Ludwig Ing Patrone fuer faust- und schulterwaffen
DE3638721A1 (de) * 1985-11-26 1987-05-27 Dynamit Nobel Ag Doppelkammer-geschoss
AT393559B (de) * 1988-08-02 1991-11-11 Winter Udo Mag Geschoss
US5187325A (en) * 1991-08-15 1993-02-16 Garvison Geary L Cylindrical bullet
US5185495A (en) * 1992-04-13 1993-02-09 Petrovich Robert M Projective with improved flowering
AT399581B (de) * 1992-09-30 1995-06-26 Winter Udo Geschoss und verfahren zu seiner herstellung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9740334A1 *

Also Published As

Publication number Publication date
ATE193374T1 (de) 2000-06-15
US6148731A (en) 2000-11-21
WO1997040334A1 (fr) 1997-10-30
PT895573E (pt) 2000-09-29
AT405977B (de) 2000-01-25
ES2147987T3 (es) 2000-10-01
CA2253375A1 (fr) 1997-10-30
DE59701769D1 (de) 2000-06-29
CA2253375C (fr) 2005-10-11
ATA73996A (de) 1999-05-15
AU2561397A (en) 1997-11-12
AU717451B2 (en) 2000-03-23
EP0895573B1 (fr) 2000-05-24

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