US3342134A - Target practice ammunition - Google Patents

Target practice ammunition Download PDF

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Publication number
US3342134A
US3342134A US580832A US58083266A US3342134A US 3342134 A US3342134 A US 3342134A US 580832 A US580832 A US 580832A US 58083266 A US58083266 A US 58083266A US 3342134 A US3342134 A US 3342134A
Authority
US
United States
Prior art keywords
case
cartridge
shell
bullet
cylindrical
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
US580832A
Other languages
English (en)
Inventor
Stadler Hans
Schinnerer Thomas
Umbach Hans
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 US3342134A publication Critical patent/US3342134A/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
    • F42B8/02—Cartridges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/067—Mounting or locking missiles in cartridge cases

Definitions

  • the present disclosure relates to practice ammunition, and more particularly to such practice ammunition in which the cartridge case and the shell are made in one piece of thermoplastic material and in which a well-defined and predetermined place of separation is provided between the case and the projectile.
  • the projectile and case being connected solely by a substantially cylindrical breaking zone that will rupture substantially exclusively in shear.
  • the cartridge cases pass over by means of a part, the so-called case shoulder, tapering conically toward the forward end of the cartridge case, from a rearward wider part into a forward narrower part, the socalled neck of the cartridge case, whose forward end is referred to as case mouth.
  • case shoulder tapering conically toward the forward end of the cartridge case, from a rearward wider part into a forward narrower part, the socalled neck of the cartridge case, whose forward end is referred to as case mouth.
  • an arrow-like shell that is, a shell in which the center of gravity is disposed to a greater or lesser extent in front of the shell center if, according to a further proposal of the present invention, the extension is provided with a central axial aperture or recess starting from its rear end and extending over a more or less large part of the shell extension and possibly also of the shell, properly speaking.
  • an elastic yieldingness of the shell extension section is achieved by the arrangement and construction of such a central aperture or recess whereby the shell extension section is pressed under the pressure of the propellant gases penetrating into the aperture or recess around the entire circumference thereof securely into the barrel of the gun so that during passage of the shell part through the barrel, a particularly good seal with respect to the propellant gases is achieved.
  • This seal can be further improved in that the shell extension section is constructed with an outer diameter increasing in the rearward direction, for example, of slight conical configuration which additionally also favors the achievement of an advantageous transition of shell to cartridge case shoulder.
  • Another object of the present invention resides in the provision of a target practice cartridge of the type in which the shell andcartridg e case are made in one piece which assures a clean, smooth and completely satis- 1 factory separation ofv the shell from the cartridge; case under all operating conditions.
  • a further'o-bject of the present invention resides :i-n-- the provision of atarget practice cartridge in which the shell is made in one piece with the cartridge case of the thermoplastic material and which is provided? with an intentional breaking place between the shell and .thc cartridge case ofsuch arrangement and constructionthat acompletcly clean separation occurs at the breaking place devoid of any parts adhering to the rear end of the shell that might impair or influence its flight characteristics.
  • Still another object of the present invention re 2 I sides in the provision of a target practice cartridge.
  • invention resides 1 in the provision of a target practice ammunition of; "thermoplastic 'niaterialthat not. only achieves a com ,pletely. satisfactory and mean separation of the cartridge 7 y 1 case from the vintegrally formed shell, but which also E bears a particularly good seal of the shell duringv passage thereof through the barrel with respect to the propellant 1 ases.”
  • FIGURE 1 is a partial axial cross-sectional view through a target practice cartridge in accordance with the present invention in which the intentional breaking place is arranged between the shell and the forward end of the cartridge case neck section,
  • FIGURE 1a is a partial cross-sectional View, on an enlarged scale, of the target practice cartridge of FIG- URE 1, illustrating a slightly modified construction
  • FIGURE 2 is a partial axial cross-sectional view through a modified embodiment of a target practice cartridge in accordance with the present invention in which the intentional breaking place is displaced rearwardly by the length of the cartridge case neck section and shoulder section to the place of transition from the normally present cartridge case shoulder into the wider rear section of the cartridge case,
  • FIGURE 2a is a partial cross-sectional view, on an enlarged scale, of a modified construction of the conmeeting place between the shell and the case, with the target practice cartridge according to FIGURE 2, and
  • FIGURE 2b is a partial cross-sectional view, on an enlarged scale, similar to FIGURE 2a of a still further modified embodiment of the connecting place between the shell and cartridge case with the target practice cartridge of FIGURE 2.
  • a further object of the presentimvention resides inithe transition from the case :llor from the case shoulder 4 f to the shell 5, theradially extending, annularly shaped and'relatively narrow cut-i:n:or notch. 6 Whose depth: 7 corresponds in thiscase:exactlytothewell thickness of 1 i ,thecartridge case neck portion 4 so that in practice the. 1 1
  • shell 5 extends in effect withits extension 7 slightly into I the case neck-portion4 andthus is connected :with thel j case 1 exclusiyely'inthe radial direction by way of this extension 7.
  • The' dash linesin FIGURE :1 indicate that the shell 5 may be provided. in its core with an aperture.
  • extension 8 corresponds to the usual cartridge case neck portion 4 and the cartridge case shoulder section 3, normally provided with such cartridges and indicated schematically in dash and dot lines.
  • the rear end of the extension 8 projects slightly into the forward end of the wide rear section 2 of the cartridge case 1 having a cylindrical external surface and slightly conically tapering internal surfaces becoming wider in the direction toward the forward end so that the shell 5 with the extension 8 thereof is connected with the cartridge case 1 corresponding to the integral manufacture of the cartridge exclusively at this place and in the radial direction.
  • the extension 8 is provided in the illustrated embodiment with a central aperture or recess 9 extending over the entire length thereof and conically enlarged toward the rear whereby the conical incline or slope is chosen slightly larger than that of the external surface so that the wall thickness of the extension 8 is slightly reduced toward the rear.
  • any other type of construction of the central aperture or recess may also be provided, for example, such an aperture or recess that a uniform wall thickness results or also especially such a construction that the aperture or recess extends in the longitudinal direction only over a more or less large part of the extension. It follows therefrom that one can at will readily influence the Weight and the center of gravity of the shell part in the desired or also necessary manner.
  • a still more clear definition of the intended breaking place that is, a still more sudden cross-sectional change at this place may be achieved if the connection between the extension 8 and the case part 2 does not take place directly at the mutually overlapping ends but slightly displaced toward the rear into the case part 2 (FIGURE 2a) and possibly also slightly displaced in the forward direction from the end of the extension 8 (FIG. 2b), that is, this connection takes place in such a manner that the extension 8 and the case part 2 are efiectively slightly further slipped one into the other and annularly shaped notches 10 or 10 and 11 result or are provided.
  • a cartridge having a firing axis of symmetry comprising: a plastic bullet portion having a forward free end and a rearward substantially cylindrical portion: a plastic tubular cartridge case for enclosing propellant powder and having a forward substantially cylindrical tubular portion only partially encircling said bullet rearward cylindrical portion to define overlapping cylindrical portions; the inside diameter of said overlapping portion of said forward substantially cylindrical tubular case portion equalling the external diameter of said overlapping portion of said bullet rearward cylindrical portion; and said overlapping portions being homogeneously integrally connected along their entire adjacent peripheries to form a one piece plastic bullet and case structure to form the sole connection between said bullet portion and said cartridge case, and to constitute means for forming an intentional cylindrical breaking zone between said bullet portion and said cartridge case that is stressed substantially exclusively in shear by the pressure of the propellant gases during the firing of the cartridge.
  • said cartridge case includes a rearward case portion, a forward neck portion and a shoulder portion connecting said neck portion and said rearward case portion.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
US580832A 1964-04-30 1966-09-20 Target practice ammunition Expired - Lifetime US3342134A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0044311 1964-04-30

Publications (1)

Publication Number Publication Date
US3342134A true US3342134A (en) 1967-09-19

Family

ID=7048229

Family Applications (1)

Application Number Title Priority Date Filing Date
US580832A Expired - Lifetime US3342134A (en) 1964-04-30 1966-09-20 Target practice ammunition

Country Status (4)

Country Link
US (1) US3342134A (da)
BE (1) BE663150A (da)
GB (1) GB1109440A (da)
NL (1) NL6502837A (da)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4391199A (en) * 1979-08-10 1983-07-05 Lionel Morin Safe ammunition for exhibition and target shooting
US4444115A (en) * 1978-06-28 1984-04-24 Rheinmetall Gmbh Cartridge-type munition having a destructible or partially combustible casing
US5708231A (en) * 1996-10-17 1998-01-13 Sigma Research, Inc. Delayed release cartridge for a firearm
US6280571B1 (en) 1998-08-17 2001-08-28 Hercules Incorporated Stabilizer for creping adhesives
US20050155511A1 (en) * 2003-12-29 2005-07-21 Neil Keegstra Extended range less lethal projectile
US20110016763A1 (en) * 2004-04-27 2011-01-27 Ducastel Jr Charles J Cartridge and chamber for simulated firearm

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT218404B (de) * 1959-10-06 1961-11-27 Dynamit Nobel Ag Platzpatrone aus Kunststoff
GB885369A (en) * 1959-04-25 1961-12-28 Ringdal Lars An improved amunition cartridge

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB885369A (en) * 1959-04-25 1961-12-28 Ringdal Lars An improved amunition cartridge
AT218404B (de) * 1959-10-06 1961-11-27 Dynamit Nobel Ag Platzpatrone aus Kunststoff

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444115A (en) * 1978-06-28 1984-04-24 Rheinmetall Gmbh Cartridge-type munition having a destructible or partially combustible casing
US4391199A (en) * 1979-08-10 1983-07-05 Lionel Morin Safe ammunition for exhibition and target shooting
US5708231A (en) * 1996-10-17 1998-01-13 Sigma Research, Inc. Delayed release cartridge for a firearm
US6280571B1 (en) 1998-08-17 2001-08-28 Hercules Incorporated Stabilizer for creping adhesives
US20050155511A1 (en) * 2003-12-29 2005-07-21 Neil Keegstra Extended range less lethal projectile
US7350465B2 (en) * 2003-12-29 2008-04-01 Neil Keegstra Extended range less lethal projectile
US20110016763A1 (en) * 2004-04-27 2011-01-27 Ducastel Jr Charles J Cartridge and chamber for simulated firearm
US8430035B2 (en) * 2004-04-27 2013-04-30 Charles J. Ducastel, JR. Cartridge and chamber for simulated firearm

Also Published As

Publication number Publication date
BE663150A (da) 1965-08-17
GB1109440A (en) 1968-04-10
NL6502837A (da) 1965-11-01

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