US3333539A - Practice ammunition - Google Patents

Practice ammunition Download PDF

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Publication number
US3333539A
US3333539A US514994A US51499465A US3333539A US 3333539 A US3333539 A US 3333539A US 514994 A US514994 A US 514994A US 51499465 A US51499465 A US 51499465A US 3333539 A US3333539 A US 3333539A
Authority
US
United States
Prior art keywords
practice
shell
mortar
firing pin
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
US514994A
Other languages
English (en)
Inventor
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 US3333539A publication Critical patent/US3333539A/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
    • F42B8/10—Cartridges with sub-calibre adaptor
    • 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
    • F42B8/00—Practice or training ammunition
    • F42B8/12—Projectiles or missiles
    • F42B8/20—Mortar grenades

Definitions

  • the present invention relates to a practice ammunition for mortars and more particularly to a release or tiring mechanism for the primer of mortar practice ammunition.
  • an ammunition body is used therefor as dummy which has the form. of a live shell.
  • the small caliber practice ammunition to be tired is thereby held in the rear end of a continuous centr-al bore of the shell dum-my serving as firing barrel or provided with a liner by a closure means detachably secured on the rear end thereof by a plug or threaded connection or the like and is inserted by means of this shell dummy into the mortar barrel.
  • trench mortar is, as is known, a gun in which the ammunition is loaded from in front into the relatively steeply inclined mortar barrel closed at the rear end by means of a bottom.
  • a stationary firing pin or an axially movable striker or firing pin adapted to move by manual actuation on which impinges the shell with its primer inserted -into the barrel and sliding downwardly within the same, or which is driven into the primer of the shell when seated against the barrel bottom or when seated on the barrel bottom by means of an abutment surface formed into the shell, whereby in both cases the ignition ofthe propellant charge is initiated.
  • the firing pin may be exposed by reason of dud shells, pierced primers and the like under certain circumstances to a relatively high load during which frequent iiring may lead to Wear appearances and eventually to damages, for example, breakage by fatigue appearances, etc., whereby the proper functioning of the gun is jeopardized so that the gun under circumstances is not ready to use in case of emergency.
  • the present invention aims'to enable the firing from a mortar of a small caliber practice ammunition, inserted into a dummy shell and held in the rear end thereof within a central ring bore by means of a closure cap, without utilizing thereby the tiring pin of the mortar, i.e., in such a manner that the firing pin does not appear in the functioning.
  • the closure cap is provided with a continuous central bore or the like and an auxiliary striker orring pin is arranged within this bore which is axially freely movable between two end positions, which faces With its point or tip the primer of the practice ammunition and which is provided at its opposite end with a central axial bore whose length and cross-sectional dimensions are selected larger than the corresponding dimensions of the firing pin of the mortar, and which is additionally so dimensioned that in one end position thereof it is with its tip or point located completely within the closure cap bore while it projects with its opposite end beyond the rear end surface cooperating with the mortar barrel bottom or with an abutment surface formed thereon or which projects beyond an abutment surface formed thereon, Whereas in the other end position it projects with its tip to such an extent beyond the closure cap surface on the side of the practice ammunition that a safe ignition is assured of the primer of a practice cartridge, shell, or the like inserted into the shell dummy.
  • a particular advantage of the present invention resides in the fact that it represents an iutegral component of the shell dummy so that no measures or changes have to be undertaken at the mortar itself, i.e., the mortar is ready for use at any time with live ammunition.
  • a further significant advantage of the arrangement and construction in accordance with the present invention is the fact that with corresponding construction and arrangement and with one and the same auxiliary ring pin or possibly by easy and simple exchange of the auxiliary firing pin, which does not impair the ready usability of the mortar, as well as possibly by a necessary replacement of the firing pin with a diiferent one, a completely satisfactory ignition of the ammunition propellant charge is assured also in mortars of different manufacture.
  • a still further object of the present invention resides in a firing mechanism for practice ammunition of mortars which is safe in operation as well as reliable to assure ready usability of the mortar at all times with live ammunition.
  • Still another object of the present invention resides in a firing mechanism for practice ammunition of mortars which completely eliminates the use Vof the normal firing pin of the mortar for tiring the practice ammunition.
  • a still further object of the present invention resides in a firing mechanism for practice shells of mortars which not only achieves theafor'ementioned aims and objects in a particularly eifective and simple manner without the Patented Aug. l, 1967V need of any modifications in the mortar but which also can be readily used for practice ammunitions supplied by different manufacturers.
  • the single figure is an axial cross-sectional view through one embodiment of a firing mechanism for the practice ammunition of mortars.
  • reference numeral 1 designates therein the mortar barrel provided with a bottom 2.
  • the small caliber practice shell which is constructed in the shape of -a cartridge and includes the shell 7 and the cartridge case S is retained by the use of the liner 5 in the rear end of the continuous central bore 6 of the shell dummy 4, which corresponds1 to a live shell as regards shape and dimensions, by means of the threaded-on closure piece 11 having a knurled knob 16.
  • the small caliber practice shell 7, 8 directly and accurately faces with the primer 10 thereof arranged in the case bottom 9 the auxiliary ring pin 13 inserted into the continuous central bore 12 of the closure piece 11.
  • the auxiliary firing pin or striker 13 is guided with its tip 14 in the narrow part of the bore 12 so as to slide easily and is displace-ably held with the ange 15 in the enlarged part of the bore 12 so as to be freely movable between two end positions but limited in the axial direction by means of shoulder 17 toward one side and by means of the plate 1S threaded or otherwise secured to the closure piece 11 toward the other side.
  • the enlarged rear end 19 of the auxiliary ring pin 13 is provided with a central aperture or blind end bore 20 whose length and crosssectional dimensions are selected considerably larger than the corresponding dimensions of the tiring pin 21 of the -morta-r which is constructed in the illustrated embodiment as stationary firing pin on the central base-shaped projection 3 of the bottom 2 of the mortar barrel 1.
  • the auxiliary striker pin 13 which is already seated with its ring-shaped rim 22 on the end surface 23 of the base 3 and is already displaced from its rear end position by a certain distance in the direction of its forward end position and thereby is so positioned that it just barely contacts with its tip 14 the primer 10 of the practice shell is displaced upon further downward movement of the shell dummy 4 relative to the mortar barrel 1 by a further distance in the direction of its forward end position, and more particularly for such length of time until the abutment surface 24 of the plate 18 abuts against the end face or abutment surface 23 of the support 3 or the forward end face of the flange 15 abuts against the shoulder 17 of the bore 12, which may also be achieved simultaneously with corresponding construction of the parts as indicated in the drawing.
  • the tip or point 14 of the auxiliary firing pin 13 then projects forwardly out of the bore 12 by a corresponding distance and penetrates with this projecting part into the primer 10 and therewith ignites the same.
  • the ignition ame penetrates by way of the ignition channel 2S into the propellant charge 26 and thus starts the ignition thereof.
  • auxiliary firing pin As can also be determined readily from the drawing, a relatively large amount of play is available for the construction of the auxiliary firing pin so that the latter can be matched readily to the corresponding conditions or, if necessary, can also be readily replaced with a corresponding firing pin of different construction which can be carried out as well as a possibly necessary replacement of the ring pin outside of the mortar and therewith without impairing the ready usability thereof.
  • a mechanism for initiating the ignition of the propellant charge in practice ammunition of mortars having a lmortar bottom and tiring pin substantially centrally arranged on said mortar bottom comprising dummy shell means corresponding in shape and dimensions to the live ammunition and provided with a central bore, practice shell means including propellant charge means and primer means operatively connected with said propellant charge means and located at the rear end of said practice shell means, said practice shell means being adapted to be inserted into the mortar by means of said dummy shell means, mea-ns 'for securely but detachably retaining said practice shell means in the rear end of said dummy shell means including closure means provided with continuous central axial bore means, auxiliary tiring pin means arranged within said axial bore means so as to be axially freely movable between two end positions, said auxiliary firing pin means being provided with a tip directed toward said primer means of the practice shell means and being provided at the opposite end thereof with a substantially central axial aperture, -said axial aperture having length and cross-sectional dimensions larger than the corresponding
  • closure means includes closure cap means.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Finger-Pressure Massage (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US514994A 1964-12-24 1965-12-20 Practice ammunition Expired - Lifetime US3333539A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0046146 1964-12-24

Publications (1)

Publication Number Publication Date
US3333539A true US3333539A (en) 1967-08-01

Family

ID=7049526

Family Applications (1)

Application Number Title Priority Date Filing Date
US514994A Expired - Lifetime US3333539A (en) 1964-12-24 1965-12-20 Practice ammunition

Country Status (8)

Country Link
US (1) US3333539A (de)
AT (1) AT258169B (de)
DE (1) DE1428677A1 (de)
ES (1) ES317479A1 (de)
FI (1) FI43049B (de)
FR (1) FR1459601A (de)
GB (1) GB1069870A (de)
NL (1) NL6514248A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2288431C1 (ru) * 2005-11-03 2006-11-27 Открытое акционерное общество специального машиностроения и металлургии "Мотовилихинские заводы" Снаряд для испытаний

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1256255A (en) * 1917-02-16 1918-02-12 Horatio A Porter Testing-cartridge.
US2674923A (en) * 1951-07-31 1954-04-13 Energa Instruction device
US3016832A (en) * 1961-03-28 1962-01-16 Clinton C Carlson Round for testing shotgun condition
US3274935A (en) * 1963-08-13 1966-09-27 Dynamit Nobel Ag Practice ammunition
US3276374A (en) * 1963-08-13 1966-10-04 Dynamit Nobel Ag Training ammunition for mortars

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1256255A (en) * 1917-02-16 1918-02-12 Horatio A Porter Testing-cartridge.
US2674923A (en) * 1951-07-31 1954-04-13 Energa Instruction device
US3016832A (en) * 1961-03-28 1962-01-16 Clinton C Carlson Round for testing shotgun condition
US3274935A (en) * 1963-08-13 1966-09-27 Dynamit Nobel Ag Practice ammunition
US3276374A (en) * 1963-08-13 1966-10-04 Dynamit Nobel Ag Training ammunition for mortars

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
FI43049B (de) 1970-09-02
GB1069870A (en) 1967-05-24
DE1428677A1 (de) 1969-03-13
ES317479A1 (es) 1965-12-01
NL6514248A (de) 1966-06-27
AT258169B (de) 1967-11-10
FR1459601A (fr) 1966-11-18

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