US3348486A - Plastic-lead mushrooming bullet - Google Patents

Plastic-lead mushrooming bullet Download PDF

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Publication number
US3348486A
US3348486A US512985A US51298565A US3348486A US 3348486 A US3348486 A US 3348486A US 512985 A US512985 A US 512985A US 51298565 A US51298565 A US 51298565A US 3348486 A US3348486 A US 3348486A
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US
United States
Prior art keywords
bullet
core
jacket
forward end
mushrooming
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
US512985A
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English (en)
Inventor
Rapp Reinhold
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.)
Dynamit Nobel AG
Original Assignee
Dynamit Nobel AG
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 Dynamit Nobel AG filed Critical Dynamit Nobel AG
Application granted granted Critical
Publication of US3348486A publication Critical patent/US3348486A/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
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
    • F42B12/76—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the casing
    • F42B12/78—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the casing of jackets for smallarm bullets ; Jacketed bullets or projectiles

Definitions

  • ABSTRACT OF "nan DISCLOSURE several axially aligned supporting shoulders spaced radially outwardly from the wedge for supporting the exterior of the core against relative movement and defining with the wedge an annular space therebetween to allow the above-mentioned mushrooming effect.
  • the core may be provided with a plurality of annular rings on its outer surface and a central rearwardly opening aperture for weight reduction and to provide desired flight characteristics.
  • the present invention proposes to make the bullet case or jacket of thermoplastic material, preferably of polyethylene, polystyrene, or hard polyvinyl chloride, and the bullet core in a known manner of lead, and to so construct the two parts that the core is retained between the solidly constructed bullet jacket tip and the inwardly flanged bullet jacket end.
  • the core is axially supported in the jacket or casing in the direction toward the bullet tip along a ring-shaped rim strip of its forward end face, i.e., in such a manner that between the central area of the forward end face of the core and the oppositely disposed central area of the case or jacket tip, a hollow space is created.
  • a further advantageous measure according to-the present invention for improving the mushrooming of the bullet core resides in that the latter is provided at the forward end face thereof with a central conical aperture or recess, by means of which the bullet core is supported ona cor-v respondingly constructed conical extension of the bullet jacket or casing or also on a separate damming body insorted in the axial direction between the bullet jacket tip and the core.
  • This measure effects immediately upon impact of the bullet at the target, a deflection of the material forming the center of the core both-forwardly and outwardly at an inclination corresponding to the conical inclination of recess and extension so that the mushroom? ing operation is initiated directly upon impact of the bullet and especially also the shearing effect on the'bullet jacket is considerably reinforced or'enhancedthereby;
  • the arrangement of a separate damming body offers thereby not only the possibility to influence the mushrooming by means of the damming body by a selection of a correspondingly hard material and totinfiuence the bullet velocity by selection of a more or less heavy material, but especially also the possibility to construct the bullet jacket tip, shearing off upon mushrooming of the core, of such heavy weight and with such penetrating force that a slug channel is achieved with certainty in the animal body.
  • the desired easy and good mushrooming ofthe core upon impact of the bullet at the target is favored as'the outer forward end of the core 1s effective along its entire circumference as a pointed wedge directed obliquely forwardly and outwardly.
  • the possibilities to influence the velocity, the weight, and the center of gravity location of the bullet according to the present invention in the desired manner are not limited to varying the wall thickness of the bullet jacket and the length of its solid tip and to then construct corre spondingly the core with :a more or less large radial and axial dimension, rather an influencing in the desired sense also exists by the fact that the core is provided along the circumference with a more or less large number of annular grooves of corresponding width and depth and/or is provided with a more or less deep recess of correspond- 7 Patented Oct. 24,1967,
  • Anotherobject of the present invention resides in the provision of a bullet jacket for cartridges in which the bullet velocity can be increased while at the same time the bullet weight can be decreased without affecting deleteriouslythe efficacy upon impact on the animal.
  • a further object of the present invention resides in a bullet jacket of the type described above which utilizes readily available materials that enhance the mushrooming explosion of the core in a rapid manner.
  • Still another object of the present invention resides in a bullet jacket or envelope of plastic material which permits variation over an extraordinarily wide range of the volume, weight, and location of the center of gravity of the 'bulletand'therewith enables an adaptation of the particular bullet to the prerequisite ballistic conditions under given circumstances.
  • Still a further object of the present invention resides in a bullet jacket for cartridges which at least greatly reduces the resistance encountered by the core during the mushrooming release of the core upon impact on the animal body.
  • Another 'object of the present invention resides in the construction and arrangement ofa bullet jacket and core therefor, which not only facilitates the mushrooming release of the core upon impact but also assures an initiation of 'such mushrooming directly upon impact of the bullet "on the animal.
  • FIGURE 1 is an axial cross-sectional view through a first embodiment of a bullet in accordance with the present invention :provided with'an internal conical damming body formed on the bullet jacket tip; and
  • FIGURE 2 is a partial 'axial cross-sectional view through amodified embodiment of'a bullet in accordance with the present invention provided with a separate damming body.
  • the bullet tip 2 approximately the forward third of the bullet jacket 1 made of synthetic plastic material and surrounding the lead core 3 is constructed as solid bullet tip 2.
  • the bullet tip 2 extends into the projection 4 of conically truncated shape and engages with this projection 4 into the conically truncated recess 6 formed into the forward end face 5 of the core 3.
  • the forward end 7 of the core 3 as well as the adjoining area 8 of the jacket 1 are provided, as viewed in axial cross section, with identical complementary Z-shaped configurations so that the jacket 1 and the core 3 mutually face one another by means of the plane annular surfaces 9 disposed one behind the other as well as the conical surface 10 and are thus mutually fixed in the axial direction.
  • the core 3 is provided with the two shallow wide annular grooves 11.
  • the inwardly flanged rear end of the jacket 1 is provided with an aperture 12 closed by the disk 13.
  • Reference numeral 14 designates a central aperture provided in the rear part of the core 3.
  • the shell tip 2, the bullet tip 2-and analogously, of course, also the core 3- may be of solid construction over a more or less large axial extent whence both an influencing of the bullet weight and therewith of the bullet velocity as also of the location of the center of gravity of the bullet can be achieved.
  • the same, however, can also be achieved to a certain extent in that the cross-sectional dimensions of the core 3 as well as the wall conditions of the jacket 1 are varied in an analogous manner.
  • Further possibilities for that purpose exist by the construction of a more or less large number of annular grooves of corresponding width and depth and also by a corresponding dimension of the recess or aperture 14 both as regards it depth as well as its cross-sectional dimensions.
  • the recess 6 and extension 4 may'also be constructed conically with a point or apex. Possibly, however, the aperture 6 by itself could be constructed conically with a point or apex and the extension 4 could be retained in the illustrated truncated conical shape. It is furthermore clear that the possibilities of construction of the recess 6 and of the extension 4 is not limited to the shape of a cone but instead other shapes may be realized, by means of which the intended rapid and easy mushrooming of the core is achieved.
  • the forward end of the bullet tip 2 may be provided also with a conventional disintegration aperture and still considered to be substantially rigid.
  • the separate damming body 15 is arranged in the axial direction between the solid bullet tip 2 constructed of much smaller dimension that in FIGURE 1 and the core 3.
  • the material of the damming body 15 such as a relatively unyielding thermoplastic material or thermosetting plastic material, to influence in the desired manner the mushrooming operation as also the bullet weight and in dependence of the latter correspondingly also the velocity and location of the center of gravity of the bullet.
  • the core 3 is constructed in that case with a larger number of trapezoidally shaped annular grooves 11 and transitional sections disposed thcrebctween whereby the adaptability of the shell to the barrel of the gun is still further improved.
  • the core 3 upon impact of the bullet on the target, the core 3 is held back in its rim area by the annular surface '9 of the bullet jacket 1, whereas, in contrast thereto, the inwardly adjoining annularly shaped area of the core 3 is displaced forwardly by reason of lack of an abutment under the effect of the inertia.
  • the inwardly adjoining rim-shaped area of the core 3 is thereby deflected obliquely forward and outwardly by the extension 4 also holding back the material of the core center and effecting a damming action and is thereby scattered and driven apart so that the jacket 1 bursts open about the entire circumference within the area of the edge 16 by the wedging effect and thus the desired mushrooming of the core can now take place without any considerable resistance.
  • a bullet for cartridges having an axis, an axial forward end and an axial rear end; a bullet jacket of synthetic plastic material; a core of lead material within said jacket; said jacket having a forward end substantially rigid jacket tip and an axially extending generally tubular portion, substantially enclosing said core at the forward end and the sides, respectively; said jacket tip having a rearwardly extending and inwardly tapered wedge means for engaging the central portion of said core to mushroom the forward end of said core outwardly and forwardly upon relative axial movement toward each other.
  • said synthetic plastic material is selected from the group consisting of polypropylene, polyethylene and hard polyvinyl chloride.
  • each of said jacket and said core has second shoulders substantially identical to, axial-1y aligned with and axially spaced from said first mentioned shoulders connected together by a diagonally extending, as viewed in axial cross section, annular portion.
  • said core has at least one annular groove on its exterior substantially symmetrical with the axis and forming an annular empty space between said core and said jacket.
  • said core has a plurality of annular grooves on its exterior substantially symmetrical with the axis and forming annular empty spaces between said core and jacket.
  • the bullet according to claim 10 further comprising closure means for closing said central aperture 12.
  • said core has a forwardly opening and widening cam aperture in its central portion generally of the same shape as and engaging said jacket wedge means.
  • each of said jacket and said core has second shoulders substantially identical to, axially aligned with and axially spaced from said first mentioned shoulders connected together by a diagonally extending, as viewed in axial cross section, annular portion,
  • said core has at least one annular groove on its exterior s'ubstantially symmetrical with the axis and forming an annular empty space between said core and said jacket.
  • said core has at least one annular groove on its exterior substantially symmetrical with the axis and forming an annular 7 empty space between said core and said jacket.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
US512985A 1964-12-12 1965-12-10 Plastic-lead mushrooming bullet Expired - Lifetime US3348486A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0046045 1964-12-12

Publications (1)

Publication Number Publication Date
US3348486A true US3348486A (en) 1967-10-24

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ID=7049447

Family Applications (1)

Application Number Title Priority Date Filing Date
US512985A Expired - Lifetime US3348486A (en) 1964-12-12 1965-12-10 Plastic-lead mushrooming bullet

Country Status (4)

Country Link
US (1) US3348486A (de)
AT (1) AT264322B (de)
FR (1) FR1457971A (de)
NL (1) NL6514246A (de)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3452677A (en) * 1967-03-14 1969-07-01 Michael F Abela Cartridge having a composite,spinning projectile
US4044685A (en) * 1971-06-18 1977-08-30 Hirtenberger Patronen-, Zundhutchen- Und Metallwarenfabrik Aktiengesellschaft Jacketless hunting bullet with roll-back cutting flags
US4338862A (en) * 1975-10-03 1982-07-13 The United States Of America As Represented By The Secretary Of The Army Bullet nose filler for improved lethality
US4776279A (en) * 1987-09-17 1988-10-11 Pejsa Arthur J Expanding ballistic projectile
BE1000457A3 (fr) * 1987-03-23 1988-12-13 Herstal Sa Perfectionnements aux projectiles.
US4977834A (en) * 1988-02-29 1990-12-18 Denis Jean Pierre Firearms ammunition, particularly game-shooting ammunition
US5175392A (en) * 1987-10-05 1992-12-29 Denis Jean Pierre Projectile intended to be fired by a fire-arm
US6176186B1 (en) * 1999-06-08 2001-01-23 Engel Ballistic Research, Inc. Subsonic expansion projectile
WO2003081166A2 (en) 2002-03-25 2003-10-02 Charles Robert Emile Lamm Bullet with booster filling and its manufacture
US20050183617A1 (en) * 2004-02-23 2005-08-25 Macdougall John Jacketed ammunition
FR2880680A1 (fr) * 2005-01-10 2006-07-14 Jean Pierre Denis Munition d'entrainement et d'intervention
US7178462B2 (en) * 2004-03-31 2007-02-20 Beasley Joseph S Projectile with members that deploy upon impact
US20100218696A1 (en) * 2005-10-21 2010-09-02 Marx Pj Firearms Projectile
US20100224095A1 (en) * 2005-10-21 2010-09-09 Liberty Ammunition, Llc Reduced Friction Projectile
JP2010230294A (ja) * 2009-03-30 2010-10-14 Asahi-Seiki Mfg Co Ltd 小火器用弾丸
ITMI20110506A1 (it) * 2011-03-29 2012-09-30 Fiocchi Munizioni Spa Pallottola per arma da fuoco, e relativa arma
US8397641B1 (en) 2006-07-01 2013-03-19 Jason Stewart Jackson Non-newtonian projectile
US8857343B2 (en) 2012-05-29 2014-10-14 Liberty Ammunition, Llc High volume multiple component projectile assembly
US20140326158A1 (en) * 2011-12-28 2014-11-06 Randy R. Fritz Hollow bullet with internal structure
US20160131463A1 (en) * 2012-06-06 2016-05-12 Saltech Ag Training Projectile and Training Cartridge
US9513092B2 (en) 2005-05-16 2016-12-06 Hornady Manufacturing Company Cartridge and bullet with controlled expansion

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2649195B1 (fr) * 1989-07-03 1993-12-31 Matra Manurhin Defense Projectile d'exercice pour arme automatique ou manuelle
DE59706552D1 (de) * 1997-01-14 2002-04-11 Contraves Pyrotec Ag Geschoss und Verfahren zu dessen Herstellung
DE102011108758B3 (de) 2011-07-28 2013-01-03 Karl-Heinz Eßmann Mehrteiliges Jagdgeschoss
USD813974S1 (en) 2015-11-06 2018-03-27 Vista Outdoor Operations Llc Cartridge with an enhanced ball round
US10551154B2 (en) 2017-01-20 2020-02-04 Vista Outdoor Operations Llc Rifle cartridge with improved bullet upset and separation
USD848569S1 (en) 2018-01-20 2019-05-14 Vista Outdoor Operations Llc Rifle cartridge

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190607571A (en) * 1906-03-29 1907-03-14 King S Norton Metal Company Lt Improvements in Enveloped Bullets for Small Arm Ammunition.
US2820412A (en) * 1948-10-20 1958-01-21 Jr Reinier Beeuwkes Projectile for firearms
US3110262A (en) * 1962-02-02 1963-11-12 Stanley E West Shock mitigating nose
US3200751A (en) * 1964-01-22 1965-08-17 George N Vitt Aerodynamic shotgun slug
US3247795A (en) * 1964-04-01 1966-04-26 Abela Michael Frank Spinning projectile for smooth bore guns

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190607571A (en) * 1906-03-29 1907-03-14 King S Norton Metal Company Lt Improvements in Enveloped Bullets for Small Arm Ammunition.
US2820412A (en) * 1948-10-20 1958-01-21 Jr Reinier Beeuwkes Projectile for firearms
US3110262A (en) * 1962-02-02 1963-11-12 Stanley E West Shock mitigating nose
US3200751A (en) * 1964-01-22 1965-08-17 George N Vitt Aerodynamic shotgun slug
US3247795A (en) * 1964-04-01 1966-04-26 Abela Michael Frank Spinning projectile for smooth bore guns

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3452677A (en) * 1967-03-14 1969-07-01 Michael F Abela Cartridge having a composite,spinning projectile
US4044685A (en) * 1971-06-18 1977-08-30 Hirtenberger Patronen-, Zundhutchen- Und Metallwarenfabrik Aktiengesellschaft Jacketless hunting bullet with roll-back cutting flags
US4338862A (en) * 1975-10-03 1982-07-13 The United States Of America As Represented By The Secretary Of The Army Bullet nose filler for improved lethality
BE1000457A3 (fr) * 1987-03-23 1988-12-13 Herstal Sa Perfectionnements aux projectiles.
US4776279A (en) * 1987-09-17 1988-10-11 Pejsa Arthur J Expanding ballistic projectile
US5175392A (en) * 1987-10-05 1992-12-29 Denis Jean Pierre Projectile intended to be fired by a fire-arm
US4977834A (en) * 1988-02-29 1990-12-18 Denis Jean Pierre Firearms ammunition, particularly game-shooting ammunition
US6176186B1 (en) * 1999-06-08 2001-01-23 Engel Ballistic Research, Inc. Subsonic expansion projectile
WO2003081166A2 (en) 2002-03-25 2003-10-02 Charles Robert Emile Lamm Bullet with booster filling and its manufacture
US20050126422A1 (en) * 2002-03-25 2005-06-16 Lamm Charles Robert E. Bullet with booster filling and its manufacture
US20050183617A1 (en) * 2004-02-23 2005-08-25 Macdougall John Jacketed ammunition
US20070163459A1 (en) * 2004-02-23 2007-07-19 Macdougall John Jacketed one piece core ammunition
AU2005214465B2 (en) * 2004-02-23 2011-04-21 General Dynamics Ordnance And Tactical Systems - Canada Inc. Jacketed one-piece core ammunition
US7980180B2 (en) 2004-02-23 2011-07-19 General Dynamics Ordnance And Tactical Systems-Canada Inc. Jacketed one piece core ammunition
US7178462B2 (en) * 2004-03-31 2007-02-20 Beasley Joseph S Projectile with members that deploy upon impact
FR2880680A1 (fr) * 2005-01-10 2006-07-14 Jean Pierre Denis Munition d'entrainement et d'intervention
US9513092B2 (en) 2005-05-16 2016-12-06 Hornady Manufacturing Company Cartridge and bullet with controlled expansion
US20100218696A1 (en) * 2005-10-21 2010-09-02 Marx Pj Firearms Projectile
US7900561B2 (en) 2005-10-21 2011-03-08 Liberty Ammunition, Llc Reduced friction projectile
US7874253B2 (en) 2005-10-21 2011-01-25 Liberty Ammunition, Llc Firearms projectile
US20100224095A1 (en) * 2005-10-21 2010-09-09 Liberty Ammunition, Llc Reduced Friction Projectile
US8397641B1 (en) 2006-07-01 2013-03-19 Jason Stewart Jackson Non-newtonian projectile
JP2010230294A (ja) * 2009-03-30 2010-10-14 Asahi-Seiki Mfg Co Ltd 小火器用弾丸
ITMI20110506A1 (it) * 2011-03-29 2012-09-30 Fiocchi Munizioni Spa Pallottola per arma da fuoco, e relativa arma
US20140326158A1 (en) * 2011-12-28 2014-11-06 Randy R. Fritz Hollow bullet with internal structure
US9372058B2 (en) * 2011-12-28 2016-06-21 Randy R. Fritz Hollow bullet with internal structure
US8857343B2 (en) 2012-05-29 2014-10-14 Liberty Ammunition, Llc High volume multiple component projectile assembly
US9470494B2 (en) 2012-05-29 2016-10-18 Liberty Ammuntion, Inc. High volume multiple component projectile assembly
US20160131463A1 (en) * 2012-06-06 2016-05-12 Saltech Ag Training Projectile and Training Cartridge

Also Published As

Publication number Publication date
AT264322B (de) 1968-08-26
FR1457971A (fr) 1966-11-04
NL6514246A (de) 1966-06-13

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