US3334587A - Fixed ammunition - Google Patents

Fixed ammunition Download PDF

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Publication number
US3334587A
US3334587A US520031A US52003165A US3334587A US 3334587 A US3334587 A US 3334587A US 520031 A US520031 A US 520031A US 52003165 A US52003165 A US 52003165A US 3334587 A US3334587 A US 3334587A
Authority
US
United States
Prior art keywords
projectile
guide rings
casing
ammunition
chamber
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
US520031A
Other languages
English (en)
Inventor
Stadler Hans
Gawlick Heinz
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 US3334587A publication Critical patent/US3334587A/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
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/02—Driving bands; Rotating bands
    • 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
    • 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

Definitions

  • the invention relates to fixed ammunition in general, and more particularly to a novel construction for a round of fixed ammunition primarily intended as artillery practice ammunition.
  • the lead material is, of course, more delicate and subject to dam age than the hard metals of which many conventional projectiles are constructed, and when handled in the manner of conventional ammunition, as is customary in practice firing and for training purposes, the same is subject to damage. Due to the reduced size of practice ammunition projectiles, even a relatively slight degree of damage or soiling may considerably adversely affect the firing characteristics, function of the fuse, etc., of this ammunition.
  • guide rings which extend outward from the body of the projectile and act to stabilize it as it passes through the gun barrel.
  • These guide rings serve as a seal to prevent the exploded propellant gases from escaping through any clearance spacing which exists between the projectile and the gun barrel, and in the case of rifle gun barrels, the guide rings are cut into by the riing and cooperate with the rifling to impart a rotary motion to the projectile for ballistic stabilization.
  • the projectile of the invention is provided with a plurality of guide rings surrounding the forward portion of its body, and an additional plurality of guide rings surrounding the rear portion of its body.
  • the hazard of handling damage to the projectile guide rings, in particular the forward guide rings, since the cartridge casing normally surrounds the rear rings, is solved in accordance with the invention by providing a casing which protectively surrounds the projectile over a major portion of its length, and is in abutting contact with all of the guide rings on the projectile, including the forward guide rings.
  • the hazard of damage to the guide rings is substantially eliminated.
  • the casing is also provided with an interior annular shoulder which is in abutting, supporting contact with the rear end portion of the projectile so as to substantially preclude any lateral displacement or tilting of the projectile, such as might occur if the round were dropped accidentally.
  • the round of fixed ammunition in accordance with the invention therefore consists of a projectile having a plurality of guide rings surrounding its forward portion, and a plurality of guide rings surrounding its rear portion, such guide rings being integral with the projectile, a casing having a wall which protectively surrounds the projectile over a major portion of its length and which is in adjacent abutting contact with all of the guide rings on the projectile, said casing having an annular interior shoulder disposed for abutting supporting contact with the rear end of the projectile, and an interior propellant charge chamber disposed adjacent to the rear end of the projectile, and an interior primer chamber adjacent to and in communication with the propellant chamber.
  • a propellant charge is disposed within the propellant chamber and a primer, such as conventional percussion type primer is disposed within the primer chamber to serve for ignition of the propellant charge.
  • the projectile and its integral guide rings are made of a soft material, such as lead, such projectile need not necessarily be a solid projectile made of the same material, but can be hollow and/ or reinforced by a member or members made of a different material.
  • the invention contemplates a projectile having at least its external portion made of a soft material.
  • the projectile is constructed so that its furthermost guide ring is disposed at an axial position with respect to the rear end of the projectile which is at least 70% of the projectile length, and the casing is extended past at least a portion of such forwardmost guide ring and protectively surrounds it.
  • One object of this invention is to provide a round of fixed ammunition suitable for practice purposes which is protected against handling damage.
  • a further object of the invention is to provide a round of fixed ammunition as aforesaid which allows the use of a projectile made either of a soft material or having an outer covering made of a soft material, which is substantially protected by the casing of the round.
  • the projectile l i.e., the shell of the training round, is constructed of lead or lead alloy in the conventional manner.
  • the forward end of the projectile 1 is surrounded by forward guide rings 8 which are integrally formed of lead material of projectile l.
  • the rear portion of the projectile 1 is surrounded by the guide or rotating rings 7, also integrally formed of the lead material.
  • the guide rings 7 and 8 stabilize the projectile 1 on its journey through the gun barrel (not shown) upon firing, and are generally cut into by the rifiing in order to impart the rotary motion to the projectile 1 and serve as a seal for the exploding gases.
  • the number of the guide rings 7 and 8 should be kept as high as possible, with at least a total of four guide rings being preferably provided. There should be at least two guide rings 8 surrounding the forward end of the projectile 1 and at least two and more preferably, three guide rings 7 surrounding the rear end of the projectile 1.
  • the interior of the projectile l as shown, is hollow and is provided with a charge 5, as for example, an explosive priming charge, an explosive charge or tracer charge, and a smoke charge 6. It is understood however, that the construction of the interior of the projectile does not constitute a part of the instant invention and the same may be constructed in any known or conventional manner and provided with any of the known or conventional filling materials or charges S and 6.
  • the projectile 1 is fixed within the casing 2, the side walls 3 of which in accordance with the invention protectively surround a major portion, and preferably at least 70%, as for example 75% of the length of the projectile.
  • the upper edge or mouth of the casing surrounds and terminates at the forwardmost guide ring 8, thus protecting all of the delicate guide rings 8 and 7, and providing a firm sealing and positioning of the projectile l in the casing 2.
  • the casing 2 may be constructed of conventional materials, as for example brass or steel.
  • the base of the casing 2 has a reduced interior diameter so as to provide an annular shoulder 9 which serves as a support for the base of the projectile 1 and prevents axial displacement thereof in the casing in the event of rough handling, dropping or the like.
  • the hollow interior portion of the casing 2 base below the rear end of the projectile 1 defines a chamber for a conventional propellant charge 4, as for example a charge of smokeless powder, and the casing 2 is also provided with a chamber containing a conventional primer 10, such as a percussion primer or cap 10, said primer chamber being disposed in communication with the propellant 4 chamber so that the propellant 4 can be ignited by the primer 10.
  • a conventional propellant charge 4 as for example a charge of smokeless powder
  • a conventional primer 10 such as a percussion primer or cap 10
  • the ammunition round construction in accordance with the invention provides for better positioning and support of the projectile 1 in the casing 2 so that loosening thereof is prevented.
  • the construction of the invention also assures more accurate and uniform firing characteristics. While the construction illustrated herein is primarily intended for ammunition of a calibre larger than that of small arms, and is primarily intended for practice or training artillery ammunition, the construction is also suitable for any other type of ammunition wherein protection of the projectile is necessary or desirable.
  • a round of fixed ammunition consisting of:
  • a casing having a wall which protectively surrounds said projectile over a major portion of its length, said wall being in adjacent abutting contact with all of the guide rings on said projectile, and said casing having an annular interior shoulder disposed so as ot be in abutting supporting contact with the rear end of said projectile, said casing having an interior propellant charge chamber disposed adjacent to the rear end of said projectile, and an interior primer chamber disposed adjacent to and in communication with said propellant chamber;
  • a fixed round of ammunition according to claim 1 wherein the projectile is made of lead and has a hollow interior chamber.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
US520031A 1962-11-21 1965-12-17 Fixed ammunition Expired - Lifetime US3334587A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0040326 1962-11-21

Publications (1)

Publication Number Publication Date
US3334587A true US3334587A (en) 1967-08-08

Family

ID=7045319

Family Applications (1)

Application Number Title Priority Date Filing Date
US520031A Expired - Lifetime US3334587A (en) 1962-11-21 1965-12-17 Fixed ammunition

Country Status (4)

Country Link
US (1) US3334587A (forum.php)
AT (1) AT255937B (forum.php)
BE (1) BE640234A (forum.php)
NL (1) NL300799A (forum.php)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133265A (en) * 1975-12-19 1979-01-09 Dynamit Nobel Ag Training projectile
US4470604A (en) * 1977-12-12 1984-09-11 Hoffmann Anton R Target practice system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133265A (en) * 1975-12-19 1979-01-09 Dynamit Nobel Ag Training projectile
US4470604A (en) * 1977-12-12 1984-09-11 Hoffmann Anton R Target practice system

Also Published As

Publication number Publication date
NL300799A (forum.php)
BE640234A (forum.php) 1964-03-16
AT255937B (de) 1967-07-25

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