US3274935A - Practice ammunition - Google Patents
Practice ammunition Download PDFInfo
- Publication number
- US3274935A US3274935A US408711A US40871164A US3274935A US 3274935 A US3274935 A US 3274935A US 408711 A US408711 A US 408711A US 40871164 A US40871164 A US 40871164A US 3274935 A US3274935 A US 3274935A
- Authority
- US
- United States
- Prior art keywords
- shell
- barrel
- practice
- dummy
- ejector
- 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
Links
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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
- F42B8/20—Mortar grenades
Definitions
- the present invention relates to practice ammunition, and more particularly to practice ammunition for mortars, consisting of a projectile or shell dummy forming an inset barrel for small-caliber shells.
- the known practice ammunition consists of a projectile or shell dummy for which emptied or unloaded live shell may be used and into which is inserted an inset barrel for a small-caliber practice grenade or shell.
- the cartridge chamber for accommodating a propellant charge cartridge for the practice grenade is provided rearwardly in the inset barrel.
- An ejector charge for the dummy is seated in the tail piece of the projectile or shell dummy which after loading of the mortar barrel is ignited by the impact of the practice ammunition against the mortar barrel bottom.
- the ejector charge of the dummy and the propellant charge of the practice shell are so selected and dimensioned that the practice grenade is shot out during the movement of the dummy in the mortar barrel and the dummy together with the inset barrel is propelled only a short distance in front of the barrel mouth.
- This known type of practice ammunition has for both the propellant charge of the practice grenade as well as for also the ejector charge of the projectile or shell dummy a separate primer or ignition pin which, of course, require constant watching and servicing. Additionally, both ignition pins are thereby so arranged in the prior art construction that the ignition pin seated on the bottom of the mortar barrel and provided there for normal use, is not used at all with the practice ammunition.
- the present invention now aims at a simplification of the practice ammunition in that the provision of separate ignition pins is obviated, yet a safe ignition both of the ejector charge of the dummy as Well as of the propellant charge of the practice shell or grenade is assured.
- the new and improved practice ammunition for mortars in which an inset barrel for small-caliber training grenade is seated and accommodated within a dummy shell and in which an ejector charge, ignited during loading of the mortar is located in the tail piece of the dummy, and where by the firing of the practice shell or grenade takes place during the movement of the dummy shell in the mortar barrel, the propellant charge of the small-caliber training grenade is ignited according to the present invention by the ejector charge of the dummy by way of a firing channel between the seat of the ejector charge cartridge and the propellant charge in the tail of a small-caliber practice grenade.
- the firing channel thereby terminates advantageously in a transmission pellet seated to the rear of the propellant charge.
- the cross section of the firing channel amounts thereby preferably to to /200 of the cross section for the gas discharge of the ejector charge gases into the mortar barrel.
- the weight of the small-caliber practice grenade thereby lies between to of the weight of the dummy shell together with the inset barrel.
- Patented Sept. 27, 1966 Another object of the present invention resides in the provision of a training ammunition which is of considerably more simple construction by dispensing with the need for separate ignition pins.
- Still a further object of the present invention resides in the provision of a training ammunition in which a safe ignition of the ejector charge for the dummy shell as well as of the propellant charge for the practice shell is assured notwithstanding the simple construction of the ignition mechanism.
- a further object of the present invention resides in the provision of the practice ammunition consisting of a dummy shell and of a practice shell received within an inset barrel formed in the dummy shell in which the usual ignition pin located at the bottom of the mortar barrel may be used for igniting the ejector and the propellant charges by impact of the ammunition.
- Still another object of the present invention resides in the provision of a training ammunition in which the propellant charge for the training shell is ignited by the ejector charge for the dummy shell.
- reference numeral 10 designates therein the dummy shell of any conventional construction.
- a longitudinal bore 11 extends through the dummy shell 10 which constitutes the inset barrel.
- the inset barrel 11 is provided at the rear end thereof with the cartridge chamher for the practice shell cartridge.
- the practice shell cartridge consists of a cartridge case 12 into which is inserted the small-caliber practice projectile or shell 13.
- the practice projectile or shell 13 has preferably the form of a mortar shell with guide fins or vanes at the tail piece thereof.
- Such small-caliber practice shells are known already in the prior art.
- the tail piece of the practice shell is bored out in the rear thereof.
- a propellant charge cartridge 22 and therebehind a transfer charge 17 are inserted into the bored out portion of the tail piece of the practice shell 12.
- An axial aperture is provided in the bottom of the cartridge case 12 which opens upon and terminates in the transfer charge 17.
- Gas discharge apertures are bored into the wall of the hollow tail piece of the practice shell 12 at the height of the propellant charge cartridge 22.
- the inset barrel bore 11 is closed at the rear end thereof by a breech casing 18 which is screwed into the rear end of the tail piece of the dummy shell 10 by means of locking cams in the manner of a conventional, interrupted screw-type breech block.
- An ejector charge cartridge 19 is inserted from the rear into the breech-casing 18 and a primer or percussion cap 20 is seated in the bottom of catridge case 19.
- the ejector cartridge case 19 is secured by a cap screw 21.
- An axial bore is provided in the bottom of this cap screw 21 behind the primer or percussion cap 20.
- Gas discharge apertures are bored into the wall of the breech casing 18 at the height of the ejector cartridge case 19.
- the ejector charge itself is covered in front thereof by an apertured disk 14 whose axial aperture 15 is closed off by a diaphragm 16 adapted to be punctured or pierced.
- An axial firing channel 23 extends through the ceiling of the breech casing 18 which firing channel 23 terminates in the transfer charge 17 within the practice grenade 13.
- the new practice ammunition according to the present invention operates as follows:
- the smallcaliber practice cartridge 13, 12 is inserted into the inset barrel 11 from the rear and is secured by threadably resecuring the breech casing 18.
- the eject-or charge cartridge 19 is then insezted into the breech casing 18 and is secured therein by screwing the cap screw 21 again onto the breech casing 18.
- the dummy shell is now .armed or loaded.
- the dummy shell is inserted in front into the mortar barrel.
- the ignition pin rigidly secured on the barrel bottom pierces the primer or percussion cap 20 of the ejector cartridge 19.
- the now developing gases puncture or break the cartridge case thereof so that they can escape toward the side into the mortar barrel through the gas discharge apertures.
- a practice ammunition especially for mortars
- ejector charge means located within said tail portion and ignited during loading of the mortar
- ejector charge means located within said tail portion and ignited during loading of the mortar
- ejector charge means located within said tail portion and ignited during loading of the mortar
- said firing channel constituted by said further means terminating in a transmission pellet disposed to the rear of the propellant charge means.
- ejector charge means located within said tail portion and ignited during loading of the mortar
- gas discharge aperture means being provided in said shell dummy for the escape of the ejection gases into the barrel
- the cross section of the firing channel amounting to about between 20 to of the cross section of said gas discharge aperture means.
- ejector charge means located within said tail portion and ignited during loading of the mortar
- the weight of the practice shell amounting to between to A of the weight of the shell dummy including the inset barrel means thereof.
- ejector charge means located within said tail portion and ignited during loading of the mortar
- gas discharge aperture means being provided in said shell dummy for the escape of the ejection gases into the barrel
- the cross section of the firing channel amounting to about between /30 to V of the cross section of said gas discharge aperture means
- the weight of the practice shell amounting to between to ,4 of the weight of the shell dummy including the inset barrel means thereof.
- a practice ammunition especially for mortars, comprising:
- ejector charge means located within said tail portion and ignited during loading of the mortar
- gas discharge aperture means being provided in said shell dummy for the escape of the ejection gases into the barrel
- the cross section of the firing channel amounting to about between to of the cross section of said gas discharge aperture means.
- a practice ammunition especially for mortars, comprising:
- ejector charge means located within said tail portion and ignited during loading of the mortar
- the weight of the practice shell amounting to between to 4 of the weight of the shell dummy including the inset barrel means thereof.
- a practice ammunition especially for mortars, comprising:
- ejector charge means located within said tail portion and ignited during loading of the mortar
- gas discharge aperture means being provided in said shell dummy for the escape of the ejection gases into the barrel
- means for igniting said propellant charge means by said ejector charge means including further means forming a firing channel betwen said ejector charge means and said propellant charge means in the tail portion of said practice shell,
- said firing channel constituted by said further means terminating in a transmission pellet disposed to the rear of the propellant charge means
- the weight of the practice shell amounting to between to of the weight of the shell dummy including the inset barrel means thereof.
- the device of claim 10 including gas discharge aperture means in said shell dummy operable to permit the escape of the ejection gases produced by said e ector charge means into the mortar barrel, and wherein the cross section of said firing channel is between to ,5 of the cross section of said gas discharge aperture means.
- said means for igniting said propellant charge means includes further means forming a firing channel between said ejector charge means and said propellant charge means in the tail portion of said practice shell operable to transmit a flame front and substantially prevent the transfer of high pressure combustion gases.
- said means for igniting said propellant charge means further includes transfer charge means located between said propellant charge means and said firing channel,
- the device of claim 13 including gas discharge aperture means in said shell dummy operable to permit the escape of the ejection gases produced by said ejector charge means into the mortar barrel, and wherein the cross section of said firing channel is between to of the cross section of said gas discharge aperture means.
- said means for igniting said propellant charge means further includes transfer charge means located between said propellant charge means and said firing channel.
- breech casing means releasably secured to the tail portion of said shell dummy having an outwardly rearwardly opening aperture containing said ejector charge means and closed by a screw cap, said screw cap having an axial bore communicating with said ejector charge means for allowing the firing pin of the mortar to ignite said ejector charge means, said breech casing including said axial firing channel and wherein said gas discharge apertures radially communicate with said outwardly rearwardly opening aperture of said breech casing means.
- said small calibre training shell includes a cartridge case containing said projectile and said propellant charge means, said cartridge case having an axial aperture aligned and communicating with said axial firing channel, said cartridge case having a rearward rim of a larger diameter than said inset barrel means and clamped by said breech casing means, said projectile having an outwardly rearwardly opening chamber containing said propellant charge means and said transfer charge, said projectile chamber being in communication with said axial aperture in said cartridge case, and said projectile having radially extending gas discharge apertures communicating with said outwardly rearwardly opening chamber for the escape of the propellant gases into said cartridge case.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Toys (AREA)
- Buckles (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED42233A DE1207833B (de) | 1963-08-13 | 1963-08-13 | UEbungsmunition fuer Minenwerfer |
Publications (1)
Publication Number | Publication Date |
---|---|
US3274935A true US3274935A (en) | 1966-09-27 |
Family
ID=7046683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US408711A Expired - Lifetime US3274935A (en) | 1963-08-13 | 1964-08-12 | Practice ammunition |
Country Status (7)
Country | Link |
---|---|
US (1) | US3274935A (es) |
BE (1) | BE651701A (es) |
CH (1) | CH412640A (es) |
DE (1) | DE1207833B (es) |
ES (1) | ES302981A1 (es) |
NL (1) | NL6406765A (es) |
NO (1) | NO116111B (es) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3333539A (en) * | 1964-12-24 | 1967-08-01 | Dynamit Nobel Ag | Practice ammunition |
US3374738A (en) * | 1965-04-09 | 1968-03-26 | Dynamit Nobel Ag | Practice ammunition for mortars |
US3638571A (en) * | 1967-09-06 | 1972-02-01 | Dynamit Nobel Ag | Recoilless practice cartridge |
US4694755A (en) * | 1986-04-09 | 1987-09-22 | Esperanza Y Cia, S.A. | Shell for firing practice |
US5228855A (en) * | 1992-03-31 | 1993-07-20 | Ffe International | Mortar training ammunition device having independently rotatable vent closure rings |
US7421934B1 (en) * | 2005-09-01 | 2008-09-09 | The United States Of America As Represented By The Secretary Of The Army | Mortar tube for training |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1578180B1 (de) * | 1966-01-07 | 1971-05-13 | Nico Pyrotechnik | UEbungsgeraet mit einer auswerfbaren Geschossattrappe fuer Granatwerfer |
DE2537636C3 (de) * | 1975-08-23 | 1984-09-13 | Dynamit Nobel Ag, 5210 Troisdorf | Übungsmunition für Mörser |
EP0169171B1 (de) * | 1984-07-17 | 1988-10-26 | Schweizerische Eidgenossenschaft vertreten durch die Eidg. Munitionsfabrik Thun der Gruppe für Rüstungsdienste | Geschoss für eine Übungsmunition mit einer Schussfeldbegrenzung sowie Verwendung des Geschosses |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB693335A (en) * | 1950-08-05 | 1953-06-24 | Energa | Practice ammunition for instruction and training purposes |
GB767488A (en) * | 1954-06-14 | 1957-02-06 | Losfeld Andre | Improvements in and relating to projectiles |
US2786415A (en) * | 1951-06-15 | 1957-03-26 | William D Alderson | Mortar training device |
US3085509A (en) * | 1960-01-15 | 1963-04-16 | Energa | Practice grenade |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2821923A (en) * | 1953-05-19 | 1958-02-04 | Patent License Corp | Mortar training device and components thereof |
-
1963
- 1963-08-13 DE DED42233A patent/DE1207833B/de active Pending
-
1964
- 1964-06-15 NL NL6406765A patent/NL6406765A/xx unknown
- 1964-06-23 CH CH823364A patent/CH412640A/de unknown
- 1964-08-10 ES ES0302981A patent/ES302981A1/es not_active Expired
- 1964-08-12 US US408711A patent/US3274935A/en not_active Expired - Lifetime
- 1964-08-12 BE BE651701D patent/BE651701A/xx unknown
- 1964-08-12 NO NO154367A patent/NO116111B/no unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB693335A (en) * | 1950-08-05 | 1953-06-24 | Energa | Practice ammunition for instruction and training purposes |
US2786415A (en) * | 1951-06-15 | 1957-03-26 | William D Alderson | Mortar training device |
GB767488A (en) * | 1954-06-14 | 1957-02-06 | Losfeld Andre | Improvements in and relating to projectiles |
US3085509A (en) * | 1960-01-15 | 1963-04-16 | Energa | Practice grenade |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3333539A (en) * | 1964-12-24 | 1967-08-01 | Dynamit Nobel Ag | Practice ammunition |
US3374738A (en) * | 1965-04-09 | 1968-03-26 | Dynamit Nobel Ag | Practice ammunition for mortars |
US3638571A (en) * | 1967-09-06 | 1972-02-01 | Dynamit Nobel Ag | Recoilless practice cartridge |
US4694755A (en) * | 1986-04-09 | 1987-09-22 | Esperanza Y Cia, S.A. | Shell for firing practice |
US5228855A (en) * | 1992-03-31 | 1993-07-20 | Ffe International | Mortar training ammunition device having independently rotatable vent closure rings |
US7421934B1 (en) * | 2005-09-01 | 2008-09-09 | The United States Of America As Represented By The Secretary Of The Army | Mortar tube for training |
Also Published As
Publication number | Publication date |
---|---|
NL6406765A (es) | 1965-02-15 |
ES302981A1 (es) | 1965-01-16 |
DE1207833B (de) | 1965-12-23 |
BE651701A (es) | 1964-12-01 |
CH412640A (de) | 1966-04-30 |
NO116111B (es) | 1969-01-27 |
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