US3289584A - Mortar ammunition - Google Patents

Mortar ammunition Download PDF

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Publication number
US3289584A
US3289584A US447812A US44781265A US3289584A US 3289584 A US3289584 A US 3289584A US 447812 A US447812 A US 447812A US 44781265 A US44781265 A US 44781265A US 3289584 A US3289584 A US 3289584A
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US
United States
Prior art keywords
case
cartridge
propellant charge
chamber
cartridge case
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
US447812A
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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 US3289584A publication Critical patent/US3289584A/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
    • F42B8/04—Blank cartridges, i.e. primed cartridges without projectile but containing an explosive or combustible powder charge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/04—Blasting cartridges, i.e. case and explosive for producing gas under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B30/00—Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
    • F42B30/08—Ordnance projectiles or missiles, e.g. shells
    • F42B30/10—Mortar projectiles
    • 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
    • F42B5/16—Cartridges, i.e. cases with charge and missile characterised by composition or physical dimensions or form of propellant charge, with or without projectile, or powder
    • 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
    • F42B5/38—Separately-loaded propellant charges, e.g. cartridge bags

Definitions

  • the present invention relates to mortar ammunition, and more particularly to fired mortar cartridges for use "in maneuvers or practice firings.
  • German patent application D 41,704 Ic/ 72d and the corresponding U.S. application S.N. 370,820, filed May 28, 1964, by Hans Stadler et al, for a Cartridge relates to a fired cartridge for mortars and proposes to provide in the propellant charge of the cartridge a central chamber parallel to the cartridge axis which extends over the entire length of the propellant charge.
  • This chamber may thereby have a cylindrical or star-shaped cross section or also any other cross section and is made appropriately of an easily destructible or breakable material, for example, of thin paper, plastic foil, or also of a powder foil.
  • the aforementioned prior art construction achieved satisfactory results, and more particularly when the combustion space is closed ofif in the forward direction by a shell whose weight amounts to about 50 to 500 times the weight of the propellant charge. If, however, the weight of the shell is reduced for purposes of reduction of its flight distance or of its penetrating force, for instance, for maneuver purposes, below the value of about 50 times the weight of the propellant charge or if a larger expansion space is provided between the fired cartridge and the shell for purposes of avoiding an excessively high peak pressure, then the results obtained with the prior art constructions are less satisfactory.
  • the propellant charge in the cartridge is provided with a central chamber parallel to the axis which extends from the rear end of the propellant charge over at least 20% and at most 80% of the longitudinal dimension of the propellant charge.
  • the chamber is constructed preferably of circularly shaped cross section, but of course may also be constructed of star-shaped or any other cross section.
  • the chamber may also again in this case be made of an easily breakable and/ or readily destructible material such as, for example, of thin paper, plastic foil or powder foil.
  • the chamber according to further feature of the present invention is constructed 'as cylindrical plastic case, closed on one side thereof, and if it is secured additionally with its open end by means of a press-fit or force-fit on an extension of a cartridge base receiving within central bore thereof the primer and/or booster charge.
  • the open end of the chamber is, according to a further appropriate construction of the present invention, closed off by means of a closure disk preferably of plastic material.
  • a particularly simple and appropriate securing of this closure disk results in that the closure disk together with an outwardly projecting annularly shaped flange of the cartridge base projection engages in an annular groove provided at the open end of the chamber or case.
  • Another object of the present invention resides in the provision of a fired cartridge structure for mortars which assures satisfactory results even though the weight of the shell is less than 50 times the weight of the propellant charge.
  • a further object of the present invention resides in the provision of a mortar ammunition provided With a cartridge that is so constructed and arranged as to permit a reduction of pressure peaks between the cartridge and the shell without impairment of the satisfactory operational results obtainable thereby.
  • Still another object of the present invention resides in the provision of a cartridge construction for mortars which achieves all of the aforementioned aims by extremely simple and relatively inexpensive means in such a manner that proper and substantially simultaneous ignition of the propellant charge is assured under all operating conditions.
  • a still further object of the present invention resides in the provision of a mortar cartridge which can be easily manufactured and assembled utilizing only a minimum of parts.
  • FIGURE 1 is a somewhat schematic axial crosssectional View through a fired cartridge in accordance with the present invention including a practice shell in serted at the forward end which is provided with an expansion space, and
  • FIGURE 2 is a somewhat schematic axial cross sectional view of a modified embodiment of a fired cartridge in accordance with the present invention, similar to FIGURE 1, with the expansion space displaced toward the shell bottom.
  • the cartridge illustrated therein which is arranged within the barrel 1 is provided with a cartridge case 2.
  • the practice shell 3 having a central recess 4 is inserted into the forward end of the case 2.
  • the case 2 is closed at the rear end thereof by means of a cartridge base 5 which is provided within a central bore 6 with the primer and/or booster charge 7 and with a conventional primer or percussion cap (not shown) located to the rear and in the extension of the charge 7.
  • the cylindrical extension 8 of the cartridge base 5 is provided with a flange-like collar 9 by means of which it engages into the annular groove 13 formed into the rearward end of the chamber or case 12 closed in front thereof and extending over about threequarters of the length of the propellant charge space 11 filled with the propellant charge 10.
  • the case 12 is thereby secured on the extension 8 by a press-fit.
  • the closure disk 14 arranged on the extension 8 which also 3 engages into the groove 13 and is secured therein, prevents that the ignition charge material trickles or seeps into the chamber 12 so that a complete emptiness of the chamber 12 is assured.
  • FIGURE 2 in which the same parts corresponding to those of FIGURE 1 are again designated by the same reference numerals, the case 2 is again closed at its forward end face.
  • a relatively large expansion space 15 is disposed between the front end of the case 2 and the bottom of the shell 3.
  • the chamber 12 extends in this case only over barely two-thirds of the length of the propellant charge 10.
  • the arrangement and construction according to FIGURE 2 corresponds as to the rest with that of FIGURE 1.
  • a cartridge comprising a substantially tubular car tridge case; a base portion closing the rear end of said cartridge case; a hollow propellant charge within said cartridge case; substantially tubular case means defining a substantially axial free expansion chamber for the propellant charge gas extending between to 80% of the entire length of said propellant charge within said hollow propellant charge, said free expansion chamber consisting essentially of gases and being substantially free of any explosive material; a projectile telescopically engaged with the forward end of said cartridge case; said cartridge case and said projectile having interengaging means for normally preventing relative axial movement; and said projectile having central recess means opening rearwardly for providing an additional free expansion chamber for the gases produced by the combustion of said propellant charge.
  • the device of claim 2 including a relatively small igniting charge in said base portion, said igniting charge and said case means being substantially axially aligned, and means, comprising said expansion chambers, for preventing excessively high peak combustion gas pressures when firing a projectile having a weight less than fifty times the weight of said propellant charge.
  • the device of claim 1 including a relatively small igniting charge in said base portion, said igniting charge and said case means being substantially axially aligned, and means, comprising said expansion chambers, for preventing excessively high peak combustion gas pressures when firing a projectile having a weight less than fifty times the weight of said propellant charge.
  • said base portion has a substantially tubular forwardly extending base member
  • said case means has a substantially tubular rearwardly extending case member being telescopically engaged with said base member; one of said members having a generally radially extending annular slot and the other of said members having a correspondingly formed annular generally radially extending projection engaged within said slot; and including a closure wall entirely closing the rearward end of said case means and being engaged within said slot.
  • said base portion has a substantially central bore extending the entire length of said base portion through said forwardly extending member, and including a primer contained in the rearward portion of said bore and a booster charge filling the forward portion of said bore.
  • said slot and said projections are each annular; including a relatively small igniting charge in said base portion, said igniting charge and said case means being substantially axially aligned, and means, comprising said expansion chamber, for preventing excessively high peak combustion gas pressures when firing a projectile having a weight less than fifty times the weight of said propellant charge.
  • said base portion has i a substantially central bore extending the entire length of said base portion through said forwardly extending mem ber, and including a primer contained in the rearward portion of said bore and a booster charge filling the forward portion of said bore.
  • a cartridge comprising a substantially tubular cartridge case; a base portion closing the rear end of said cartridge case; a hollow propellant charge within said cartridge case; substantially tubular case means defining a substantially axial free expansion chamber for the propelant charge gas extending between 20% to of the entire length of said propellant charge within said hollow propellant charge, said free expansion chamber consisting essentially of gases and being substantially free of any explosive material; said base portion having a substantially tubular forwardly extending base member; said case means having a substantially tubular rearwardly extending case member being telescopically engaged with said base member; one of said members having a generally radially extending slot and the other of said members having a correspondingly formed projection engaging within said slot; and a closure wall entirely closing the rearward end of said case means and being engaged within said slot.
  • said base portion has a substantially central bore extending the entire length of said base portion through said forwardly extending member, and including a primer contained in the rearward portion of said bore and a booster charge filling the forward portion of said bore.
  • a cartridge comprising: a generally tubular cartridge case having a forward end and a rearward end; a cartridge base portion substantially closing said rearward end of said cartridge case; a propellant charge within said cartridge case adjacent said base; a generally continuous tubular central chamber case closed at one end and open only at the other end; said chamber case extending substantially over at least about 20% to at most about 80%- of the longitudinal dimension of said propellant charge; said cartridge base having means for receiving a primer cap and said cartridge base having a substantially tubular axial integral forward extension; said chamber case having the other open end telescopically secured by a pressfit on said extension; andsaid chamber case being substantially completely void of propellant compositions.
  • Cartridge for mortars including:
  • closure disk means for closing the open end of said substantially cylindrical case with respect to said base portion.
  • Cartridge for mortars comprising:
  • said chamber means extending from the rear end of said propellant charge means over at least about 20% to at most about 80% of the longitudinal dimension of said propellant charge means, said chamber means being constructed as substantially cylindrical case closed at the forward end thereof,
  • a cartridge base portion having a substantially cylindrical central extension, said substantially cylindrical case being secured with the open end thereof by a press-fit on said extension,
  • closure disk means for closing the open end of said substantially cylindrical case with respect to said base portion
  • said extension being provided with an essentially annularly shaped flange
  • a cartridge comprising: a generally tubular cartridge case having a forward end and a rearward end; a cartridge base portion substantially closing said rearward end of said cartridge case; a propellant charge within said cartridge case adjacent said base; a generally continuous tubular central chamber case closed at one end and open only at the other end; said chamber case extending substantially axially over at least about 20% to at most about 80% of the longitudinal dimension of said propellant charge; said cartridge base having means for receiving a primer cap and said cartridge base having a substantially tubular axial integral forward extension; said chamber case having the other open end secured on said extension; said chamber case being substantially completely void of propellant composition; and closure disc means separate from and independent of the primer cap for closing the open end of said chamber case against said base portion.
  • Cartridge for mortars comprising:
  • said chamber means extending from the rear end of said propellant charge means over at least about 20% to at most about of the longitudinal dimension of said propellant charge means
  • said chamber means being constructed as substantially cylindrical case of plastic material closed at the forward end thereof,
  • a cartridge base portion having a substantially cylindrical central extension, said substantially cylindrical case being secured with the oprn end thereof by a press-fit on :aid extension.
  • closure disk means of plastic material for closing the open end of said substantially c lindrical case with respect to said base portion
  • said extension being provided with an essentially annularly shaped flange

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Toys (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
US447812A 1964-04-18 1965-04-13 Mortar ammunition Expired - Lifetime US3289584A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED44201A DE1277706B (de) 1964-04-18 1964-04-18 Abschusspatrone fuer Werfer

Publications (1)

Publication Number Publication Date
US3289584A true US3289584A (en) 1966-12-06

Family

ID=7048147

Family Applications (1)

Application Number Title Priority Date Filing Date
US447812A Expired - Lifetime US3289584A (en) 1964-04-18 1965-04-13 Mortar ammunition

Country Status (5)

Country Link
US (1) US3289584A (enrdf_load_stackoverflow)
AT (1) AT266653B (enrdf_load_stackoverflow)
DE (1) DE1277706B (enrdf_load_stackoverflow)
ES (1) ES309693A2 (enrdf_load_stackoverflow)
NO (1) NO115870B (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3776136A (en) * 1971-12-30 1973-12-04 Aai Corp Ammunition arrangement
US4011817A (en) * 1975-05-07 1977-03-15 General Electric Company Liquid propellant weapon system
WO2005043072A1 (en) * 2003-11-04 2005-05-12 Comtri Teknik Ab Cartridge
US20150268022A1 (en) * 2014-03-23 2015-09-24 Blake Van Brouwer Channel-forming propellant compression die and method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2300473C3 (de) * 1973-01-05 1981-10-22 Buck Chemisch-Technische Werke GmbH & Co, 7341 Bad Überkingen Treibladung für Handabschußgeräte
DE3148829A1 (de) * 1981-12-10 1983-06-16 Rheinmetall GmbH, 4000 Düsseldorf Munition, vorzugsweise zum einsatz gegen gedeckte ziele
AT396303B (de) * 1990-02-27 1993-08-25 Steyr Daimler Puch Ag Patrone

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1438779A (en) * 1922-04-17 1922-12-12 Western Cartridge Co Battery cup
FR714545A (fr) * 1930-03-29 1931-11-16 Anciens Ets Skoda Procédé pour l'aménagement et le montage de charges fractionnées de poudre dans l'étui d'un projectile
FR813397A (fr) * 1935-05-31 1937-05-31 Anciens Ets Skoda Disposition des charges de propulsion des armes à feu
FR958434A (enrdf_load_stackoverflow) * 1950-03-10
FR1347142A (fr) * 1962-11-13 1963-12-27 Cartoucherie Francaise Perfectionnements aux cartouches de mortiers

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT1436B (enrdf_load_stackoverflow) * 1899-06-23 1900-05-25 Antony Barrallon
AT4415B (enrdf_load_stackoverflow) * 1899-06-23 1901-06-10 Antony Barrallon
FR503944A (fr) * 1917-12-17 1920-06-21 Edgar William Brandt Relais d'allumage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR958434A (enrdf_load_stackoverflow) * 1950-03-10
US1438779A (en) * 1922-04-17 1922-12-12 Western Cartridge Co Battery cup
FR714545A (fr) * 1930-03-29 1931-11-16 Anciens Ets Skoda Procédé pour l'aménagement et le montage de charges fractionnées de poudre dans l'étui d'un projectile
FR813397A (fr) * 1935-05-31 1937-05-31 Anciens Ets Skoda Disposition des charges de propulsion des armes à feu
FR1347142A (fr) * 1962-11-13 1963-12-27 Cartoucherie Francaise Perfectionnements aux cartouches de mortiers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3776136A (en) * 1971-12-30 1973-12-04 Aai Corp Ammunition arrangement
US4011817A (en) * 1975-05-07 1977-03-15 General Electric Company Liquid propellant weapon system
WO2005043072A1 (en) * 2003-11-04 2005-05-12 Comtri Teknik Ab Cartridge
US20050268808A1 (en) * 2003-11-04 2005-12-08 Comtri Teknik Ab Cartridge
US20150268022A1 (en) * 2014-03-23 2015-09-24 Blake Van Brouwer Channel-forming propellant compression die and method

Also Published As

Publication number Publication date
ES309693A2 (es) 1969-01-01
AT266653B (de) 1968-11-25
DE1277706B (de) 1968-09-12
NO115870B (enrdf_load_stackoverflow) 1968-12-16

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