US3374738A - Practice ammunition for mortars - Google Patents

Practice ammunition for mortars Download PDF

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Publication number
US3374738A
US3374738A US535565A US53556566A US3374738A US 3374738 A US3374738 A US 3374738A US 535565 A US535565 A US 535565A US 53556566 A US53556566 A US 53556566A US 3374738 A US3374738 A US 3374738A
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US
United States
Prior art keywords
projectile
practice
cartridge
case
dummy
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
US535565A
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English (en)
Inventor
Gawlick Heinz
Stahlmann Rudolf
Mauer Erich
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 US3374738A publication Critical patent/US3374738A/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
    • F42B8/12—Projectiles or missiles
    • F42B8/20—Mortar grenades

Definitions

  • the second method of the ejection of the projectile dummy by means of an ejecting charge entails the disadvantage that for purposes of loading and reloading a relatively large number of parts have to be assembled, disassembled, and reassembled.
  • this latter method in the final analysis, also becomes complicated and time-consuming to a certain extent.
  • the danger of losing parts becomes greater the larger the number of the individual parts, especially in the case when the handling thereof is necessary during the execution of battle-like practice firing in the field and, for example, under more difficult conditions.
  • the present invention proposes, for purposes of eliminating the aforementioned disadvantages, to provide the cartridge case with a rearwardly open, central, preferably cylindrical hollow space for the accommodation of the ejection charge by means of an extension of the cartridge case stem extending rearwardly beyond the case bottom.
  • the ejection charge can be inserted thereby directly into the rear extension of the case stem or even more appropriately may be inserted in the form of a correspondingly constructed pre-assembled cartridge into the same which permits, on the one hand, to make, store, and transport the ejection cartridge by itself and therewith to simplify the manufacture of the practice ammunition as well as to render more safe the handling thereof, and on the other hand, to provide the possibility to combine the ejection cartridge at a more or less early point of time prior to the use of the ammunition with the cartridge case and the practice projectile into a unit which can be handled in a simple and easy manner during the practice firing and in particular which dispenses with a separate part for the accommodation of the ejection charge.
  • Still another object of the present invention resides in a practice ammunition for mortars which reduces the need for assembling, disassembling and reassembling numerous parts during practice firing.
  • a further object of the present invention resides in a practice ammunition for mortars which permits practice firing in the field, simulating actual battle conditions to a much greater extent than realizable heretofore.
  • a still further object of the present invention resides in a practice ammunition for mortars provided with an ejection charge for the projectile dummy in which the ejection charge is accommodated within a self-contained cartridge that can be manufactured, stored, and transported separately from the remaining parts of the practice ammunition.
  • Another object of the present invention resides in a practice ammunition for mortars of the type described above which can be readily preassembled prior to actual use.
  • Still another object of the present invention resides in a practice ammunition for mortars which greatly simplifies the fuse structure thereof.
  • FIGURE 1 is an axial cross-sectional view through one embodiment of a practice ammunition in accordance with the present invention Which is retained in the pro jectile dummy by means of a closure mechanism having an auxiliary striker pin and which is installed together therewith into the mortar;
  • FIGURE 2 is a partial axial cross-sectional view, on arreduced scale, illustrating a modified embodiment of a practice ammunition according to the present invention, similar to that of FIGURE 1;
  • FIGURE 3 is a partial axial cross-sectional view through a still further modified embodiment of a practice ammunition for mortars of the present invention, in which the cartridge case abuts against the rear end of the shell dummy by means of a conically shaped shoulder; and
  • FIGURE 4 is a partial axial cross-sectional view through still another modified embodiment of a practice shell in accordance with the present invention, similar to that of FIGURE 3.
  • reference numeral 1 designates therein the mortar barrel of which only the rear portion is shown.
  • the practice cartridge generally designated by reference numeral 5 is retained in the rear portion of the inset barrel 3 by means of the closure mechanism generally designated by reference numeral 4 and provided with the auxiliary striker pin 13.
  • the practice cartridge 5 contains in the forward hollow space 7 of the cartridge case 6 the practice projectile 8 of undersize caliber and constructed in its shape in correspondence to that of the live mortar ammunition, as well as in the rear hollow space 9 the ejection cartridge generally designated by reference numeral 10.
  • the bottom 11 separating the two hollow spaces 7 and 9 is provided with the central axial connecting bore 12.
  • the portion 14 of the case 6 projecting rearwardly beyond the case bottom 11 is constructed considerably thicker than the forward case stem and is provided with the radial gas discharge apertures 15.
  • the gas discharge aperture or apertures 16 are formed in the inset barrel 3 and in the projectile dummy 2 in extension of the gas discharge aperture or apertures 15.
  • the ejection cartridge containing the ejection charge 19 is provided at its forward end with the disk 23- retained by the flanged rim 20 of the case 21 and provided with the central bore 22. In the direction toward the ejection charge 19, the bore 22 is covered by means of foil 24 or the like.
  • the primer 26 of conventional construction is arranged in the bottom piece 25 of the cartridge 10.
  • the practice cartridge 5 with inserted ejection cartridge 10 is placed with its rim 27 underneath the claws 28 of the closure means 4 and is thereupon inserted by means of the same from behind into the inset barrel 3 or into the cartridge chamber of the projectile dummy 2. After the locking or any other conventional securing of the closure means 4 onto the end of the projectile dummy 2, the device is ready for firing.
  • the projectile dummy 2 together with the practice cartridge 5 and the ejection cartridge 10 is inserted from in front into the mortar barrel 1.
  • the auxiliary striker pin 13 abuts at first with its rearward, ring-shaped rim 30 extending over the mortar striker pin 29 against the anvil 32 formed at the mortar bottom 31 whereby the auxiliary striker pin 13, during the further downward sliding movement of the projectile dummy 2, is displaced from the rearward into the forward end position and after the elimination of the axial play between the auxiliary striker pin tip 33 and the primer 26, which is the condition of the parts illustrated in FIGURE 1 of the drawing, is driven with its tip 33 into the primer 26 and thus initiates the ignition of the ejection charge 19.
  • the case 21 thereof is perforated within the area of the gas discharge aperture 15 so that the gases can flow out through the apertures 15 and 16 into the interior space 34 of the mortar barrel 1.
  • the cover foil 24 is perforated within the area of the bore 22 of the disk 23 so that a jet of the hot flame gases of the ejection charge 19 is able to penetrate through the bore 22 and the ignition channel 12 and is able to ignite the propulsion charge of the projectile (not shown), possibly by way of an ignition transmitting capsule (not shown) arranged approximately at the rear end of the projectile propulsion charge in extension of the ignition channel 12.
  • the closure means 4 After picking up the projectile dummy 2, the closure means 4 is now unlocked and by means thereof or by means of the claws 27 thereof, the case 6 of the practice cartridge 5' and therewith also the ejection cartridge 10 is pulled out of the cartridge chamber. The empty cases of the cartridges 5 and 10 are taken out of the closure means 4 whereupon the projectile dummy 2 is prepared in the manner already described above for a new round of firing.
  • FIGURE 1 The same conditions exist in principle in the embodiment of FIGURE 2, in which only the inset barrel 3 is shown of the projectile dummy 2, as were illustrated and described in detail already in connection with FIG- URE 1.
  • the sole difference with respect to FIGURE 1 consists practically in that the case of the practice cartridge 5 only extends up to the forward end of the guide means 36 of the practice projectile 8 and the cartridge chamber is also constructed to correspondingly shorter dimension.
  • a closure means such as the closure mechanism 4 of FIGURES 1 and 2 is dispensed with and in lieu thereof the extension 14 of the cartridge case 6 receiving the ejection cartridge 10 is further reinforced whereby the transition to this reinforced portion takes place within the area of the bottom 11 by means of the conical enlargement 37 which serves simultaneously for the support of the cartridge 5 and the case 6 against the rear end of the projectile dummy 2.
  • the securing of the practice cartridge 5 in the cartridge chamber of the projectile dummy 2 takes place in this embodiment by means of the projections 38 formed along the outside of the case 6 which during insertion of the cartridge 5 into the projectile dummy 2, slide at first in axial grooves (not shown) and are thereupon retained by a more or less great rotation of the cartridge 5 in the manner of a bayonet-type closure mechanism in the annular groove 39.
  • the extension 14 is provided also in this case with radial gas discharge apertures 15. Since the extension 14 extends beyond the rear end of the projectile dummy 2, corresponding gas discharge apertures in the projectile dummy 2 may be dispensed with in this arrangement whereby possibly also an oriented insertion of the cartridge chamber may be dispensed with accordingly.
  • the ejection cartridge 10 is to be secured in this case by means of a clamping or wedging fit in the extension 14 or in the space 9 thereof.
  • the case 21 may be provided appropriately for that purpose with ribs (not shown) whose outer contact circle as measured along the circumference, is greater than the inner diameter of the cartridge chamber.
  • Mortar barrels of different manufacture are provided, as is known, with certain differences as regards striker pins.
  • the centrally apertured cap 40 may be secured on the rear end of the cartridge case 6, according to the partial cross section of FIGURE 4, the centrally apertured cap 40 by means of a bayonettype connection, a threaded connection, a snap-type connection or the like whereby the thickness of the bottom 41 is, in each case, so selected in accordance with the height or length of the striker pin 29 that necessarily always the same penetrating depth of the striker pin 29 into the primer of the ejection cartridge 10 results.
  • the task of an additional securing of the ejection cartridge 10 in the hollow space 9 of the cartridge case 6 may be assigned to the cap 40 if its bottom 41, as shown, overlaps more or less the bottom of the ejection cartridge 10.
  • other solutions are within the scope of the present invention both for the regulation of the penetrating depth of the firing pin into the primer of the ejection cartridge as well as for the securing of the latter in the cartridge case 6.
  • a mortar practice ammunition having a dummy projectile provided with an inset barrel, comprising; practice cartridge case means; practice projectile means of small caliber and arranged in said cartridge case means and including practice propellant charge means for the firing of the practice projectile means out of said inset barrel; said practice cartridge case means including a main case portion, a case bottom and an extension extending beyond said case bottom in the rearward direction, said extension being provided with a central hollow chamber means open toward the rear for accommodating an ejection charge to eject the dumming projectile out of the mortar barrel.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US535565A 1965-04-09 1966-03-18 Practice ammunition for mortars Expired - Lifetime US3374738A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0046999 1965-04-09

Publications (1)

Publication Number Publication Date
US3374738A true US3374738A (en) 1968-03-26

Family

ID=7050111

Family Applications (1)

Application Number Title Priority Date Filing Date
US535565A Expired - Lifetime US3374738A (en) 1965-04-09 1966-03-18 Practice ammunition for mortars

Country Status (8)

Country Link
US (1) US3374738A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT (1) AT262110B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE679183A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE1453823B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DK (1) DK118707B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1141964A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IL (1) IL25398A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL146600B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948179A (en) * 1973-04-12 1976-04-06 Dynamit Nobel Aktiengesellschaft Practice device for mortars
US4098190A (en) * 1975-08-23 1978-07-04 Dynamit Nobel Aktiengesellschaft Training ammunition for mortars
US4549487A (en) * 1983-09-29 1985-10-29 Pocal Industries, Inc. Practice projectile with variable range
US4711180A (en) * 1986-10-06 1987-12-08 John Smolnik Mortar training device with functional simulated propelling charges
US5228855A (en) * 1992-03-31 1993-07-20 Ffe International Mortar training ammunition device having independently rotatable vent closure rings
RU2249780C2 (ru) * 2003-04-15 2005-04-10 Государственное Унитарное Предприятие "Конструкторское Бюро Приборостроения" (Гуп "Кбп") Приспособление учебной стрельбы
US20150027334A1 (en) * 2012-02-07 2015-01-29 Nikolay Nikolaevich Kireev Special cartridge (variants)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3274935A (en) * 1963-08-13 1966-09-27 Dynamit Nobel Ag Practice ammunition

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3274935A (en) * 1963-08-13 1966-09-27 Dynamit Nobel Ag Practice ammunition

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948179A (en) * 1973-04-12 1976-04-06 Dynamit Nobel Aktiengesellschaft Practice device for mortars
US4098190A (en) * 1975-08-23 1978-07-04 Dynamit Nobel Aktiengesellschaft Training ammunition for mortars
US4549487A (en) * 1983-09-29 1985-10-29 Pocal Industries, Inc. Practice projectile with variable range
US4711180A (en) * 1986-10-06 1987-12-08 John Smolnik Mortar training device with functional simulated propelling charges
US5228855A (en) * 1992-03-31 1993-07-20 Ffe International Mortar training ammunition device having independently rotatable vent closure rings
RU2249780C2 (ru) * 2003-04-15 2005-04-10 Государственное Унитарное Предприятие "Конструкторское Бюро Приборостроения" (Гуп "Кбп") Приспособление учебной стрельбы
US20150027334A1 (en) * 2012-02-07 2015-01-29 Nikolay Nikolaevich Kireev Special cartridge (variants)
US9810512B2 (en) * 2012-02-07 2017-11-07 Nikolay Nikolaevich Kireev Special cartridge (variants)

Also Published As

Publication number Publication date
NL146600B (nl) 1975-07-15
BE679183A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1966-09-16
DE1453823A1 (de) 1969-05-22
AT262110B (de) 1968-05-27
DK118707B (da) 1970-09-21
IL25398A (en) 1971-01-28
NL6602436A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1966-10-10
GB1141964A (en) 1969-02-05
DE1453823B2 (de) 1974-05-22

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