US3868905A - Springmine - Google Patents

Springmine Download PDF

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Publication number
US3868905A
US3868905A US322490A US32249073A US3868905A US 3868905 A US3868905 A US 3868905A US 322490 A US322490 A US 322490A US 32249073 A US32249073 A US 32249073A US 3868905 A US3868905 A US 3868905A
Authority
US
United States
Prior art keywords
mine
spring
charge
base plate
mine body
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
US322490A
Other languages
English (en)
Inventor
Franz Ragailler
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.)
Armaturen GmbH
Original Assignee
Armaturen GmbH
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
Priority to BE793953D priority Critical patent/BE793953A/fr
Priority to DE2300230A priority patent/DE2300230C3/de
Priority to GB86073A priority patent/GB1412218A/en
Priority to CH14573A priority patent/CH572606A5/xx
Application filed by Armaturen GmbH filed Critical Armaturen GmbH
Priority to NL7300351.A priority patent/NL165842C/xx
Priority to US322490A priority patent/US3868905A/en
Priority to FR7300934A priority patent/FR2214103B1/fr
Application granted granted Critical
Publication of US3868905A publication Critical patent/US3868905A/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
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/20—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type
    • F42B12/22—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type with fragmentation-hull construction
    • F42B12/32—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type with fragmentation-hull construction the hull or case comprising a plurality of discrete bodies, e.g. steel balls, embedded therein or disposed around the explosive charge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B23/00—Land mines ; Land torpedoes
    • F42B23/10—Land mines ; Land torpedoes anti-personnel
    • F42B23/16—Land mines ; Land torpedoes anti-personnel of missile type, i.e. all kinds of mines launched for detonation after ejection from ground

Definitions

  • ABSTRACT An anti-personnel mine adapted. when activated, to be propelled into the air before exploding. and having a shatterable body the lower part of which is hemispherical in shape to increase the component of mine fragments which are directed downwardly when the mine explodes.
  • the mine is formed with a launching device comprising a base plate which carries a vertical plunger adapted to be received in a corresponding bore in the mind body, a propellant charge being disposed at the upper end of the bore.
  • PATENTED W5 sum 3 o g SPRINGMINE The invention relates to a spring mine with a mine body which can be disintegrated into fragments under the effect of a detonating explosive charge.
  • Spring mines which can be ejected from a projection chamber or container by means of an ejector charge are known, which consist of a cylindrical casing constituted by two concentric tubes enclosing an annular chamber between them, a cover and a base. Prepared fragments are disposed in the annular chamber between the two concentric tubes. The bursting charge is located within the inner tube.
  • a release device for example through a mechanical or electrical detonator
  • the spring mine is ejected from the projection container under the action of the propelling gases of the charge. After reaching a given height above the ground level, the detonation of the bursting charge of the spring mine and the scattering of the fragments disposed in the annular chamber of the mine occurs.
  • the form of the bottom part of the mine in accordance with the invention causes a roughly hemispherically shaped fragmentation scatter downwards, since the scatter of the fragments takes place substantially normal to the surface of the mine body.
  • the upper part ofthe mine body provides for the substantially horizontal fragmentation scatter (in order also to attain a fragmentation action more remote from the point of detonation), and is desirably formed cylindrical or slightly conical.
  • a particularly uniform fragmentation distribution is attained when the mine body consists of pre-' pared metal particles embedded in a plastics material. In this preferred case, when the mine body is disintegrated those metal particles are available as fragments to a predetermined extent.
  • the scatter effect in accordance with the invention also occurs in principle when the mine body is for example an homogeneous cast metal part.
  • the spring mine occupies its normal attitude, thus that the arched lower part of the mine body is actually directed downwards and the axis of the mine body (or the axis of its cylindrical or conical upper part) is vertical.
  • the spring mine In order to attain this, the spring mine must in the first place be buried in its normal attitude, that is, with this axis vertical in the ground. But it must further be ensured that the spring mine does not tilt out of its normal attitude either when the ejection charge is released or during the firing process and upward flight or jump.
  • a base plate is provided as a launching device which carries a plunger standing normal to the base plate, which enters into a central vertical bore of the arched lower part of the mine body.
  • the ejector charge is located in this bore above the plunger of the base plate.
  • FIG. 1 is a vertical section of a spring mine in accordance with the invention
  • FIG. 2 is a vertical section of the same spring mine turned through relative to FIG. 1',
  • FIG. 3 shows a spring mine buried in the ground
  • FIG. 4 a spring mine fired upwards
  • 5 FIG. 5 shows a variation in shape of the mine body.
  • the spring mine according to FIGS. 1 and 2 has a 'body 1 which consists of metal particles 2 embedded in a plastics material.
  • the mine body 1 has a convex arched form in its lower part, substantially constituting a hemisphere and is made slightly conical (a truncated cone) in its upper part.
  • the mine is enclosed at the top by a flat cover plate 3.
  • the bursting charge 4 is located in the interior of the spring mine.
  • a vertical central tubular cylinder 5 is also located within the spring mine and is connected to the mine body. At its upper end the cylinder tube 5 receives a firing head 6 with a mechanical igniter 7 and an electrical igniter 8.
  • the firing head 6 is rigidly joined to the cylinder tube 5.
  • a plunger 10 fixed to a base plate 9 penetrates into the bore of the cylinder tube 5 from below.
  • the ejector charge (driving charge) 11 is disposed between the plunger (or piston) 10 and the firing head 6.
  • the ejector charge 11 is formed as a ring and the two igniters 7 and 8 are disposed diametrically opposite to one another above the front face of the annular ejector charge 11. Since both igniters 7 and 8 act upon the same ejector charge 11, the same launching conditions are always present, whether the ignition is electrical or mechanical when effected.
  • a further igniter (or detonator) 12 is provided for the bursting charge 4.
  • the detonator 12 for the bursting charge 4 has a spring-loaded striker 14 secured by a pin 13 and also a booster charge 15 with a primer 16. Attached to the pin 13 is a cable 117 which is anchored through an interposed spring 18 in the base plate 9. The cable 17 and the spring 18 are enclosed in a tube 19 which is rigidly connected to the firing head 6 and protects the cable 17 and also the spring 18 from the powder gases when the ejection charge 11 is fired.
  • FIG. 3 shows the spring mine buried in the ground. Only the mechanical igniter 7 protrudes above the ground and is connected to trip wires 20. A firing cable 21 is connected to the electrical igniter 8.
  • the ejector charge 11 is fired through actuation of one of the two igniters 7 or 8.
  • the spring mine is driven upwards, thrusting against the plunger 10, through the powder gases of the ejector charge 11. This causes the spring 18 to be extended in length and finally the pin 13 is torn out of its means of retention. This releases the striker 14; this strikes against the primer 16 of the booster charge and the bursting charge 4 is caused to detonate. This occurs at a predetermined height (for example 1 meter) above the ground, according to the dimensions of the drawing means (cable 17 and spring 18).
  • FIG. 4 shows the spring mine fired upwards. It can be seen from FIG. 4 that on ejection the base plate 9 and the plunger 10 remain buried in the ground. Arrows are also drawn around the mine body in FIG. 4 to indicate the directions of the fragmentation scatter. As can be seen, the fragmentation scatter occurs normal to the surface of the mine body. By virtue of the form of the mine body in accordance with the invention, a scatter effect consequently occurs both horizontally and directed towards the ground. Only upwards does virtually no fragmentation scatter occur, and this is because the upper side of the spring mine is only covered by a flat cover plate, which does not contain metal particles made effective by fragmentation, nor is it disintegrated into effective fragments through the detonation.
  • the scatter effect demonstrated in FIG. 4 only occurs when the spring mine is not inclined in the buried condition before launching or during the launching compared to the attitude illustrated in FIGS. 3 and 4. This is attained with the spring mine in accordance with the invention through the good anchoring of the base plate 9 in the ground and also through the guidance between the plunger 10 and the bore of the cylinder tube 5 disposed inside the mine.
  • FIG. 5 shows diagrammatically one variation of form of a spring mine in accordance with the invention.
  • the spring mine of FIG. 5 differs only in the fact that the upper part of the mind body 1 is not formed conically but cylindrically.
  • a spring mine including a mine body disintegratable into fragments under the action of a detonating bursting charge, a lower part of the mine body being formed arched downwardly so as to be substantially hemispherical and an upper part joined to the hemispherical lower part being formed generally cylindrical, said mine body consisting of metal particles embedded in a plastics material, a central, vertical bore in said mine body and being open in the region of the arched lower part, a guide plunger which is fixed to a base plate being received in said vertical bore, an ejector charge being disposed in the bore above the guide plunger, a drawing means is provided for detonating the bursting charge, said drawing means extending along the vertical central axis of said mine body, one end of said drawing means being anchored in the center of the base plate and the other end being connected to a securing element of a detonator for the bursting charge.
  • a spring mine as claimed in claim 1 comprising a vertically depending tube connected to said mine body extending within said guide plunger, said drawing means extending through said tube so as to be protected thereby.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Elimination Of Static Electricity (AREA)
US322490A 1973-01-04 1973-01-10 Springmine Expired - Lifetime US3868905A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BE793953D BE793953A (fr) 1973-01-04 Mine sauteuse
DE2300230A DE2300230C3 (de) 1973-01-04 1973-01-04 Springmine
GB86073A GB1412218A (en) 1973-01-04 1973-01-05 Land mine
CH14573A CH572606A5 (fr) 1973-01-04 1973-01-08
NL7300351.A NL165842C (nl) 1973-01-04 1973-01-10 Springmijn.
US322490A US3868905A (en) 1973-01-04 1973-01-10 Springmine
FR7300934A FR2214103B1 (fr) 1973-01-04 1973-01-11

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
DE2300230A DE2300230C3 (de) 1973-01-04 1973-01-04 Springmine
GB86073A GB1412218A (en) 1973-01-04 1973-01-05 Land mine
CH14573A CH572606A5 (fr) 1973-01-04 1973-01-08
NL7300351.A NL165842C (nl) 1973-01-04 1973-01-10 Springmijn.
US322490A US3868905A (en) 1973-01-04 1973-01-10 Springmine
FR7300934A FR2214103B1 (fr) 1973-01-04 1973-01-11
BE793953 1973-01-12

Publications (1)

Publication Number Publication Date
US3868905A true US3868905A (en) 1975-03-04

Family

ID=27560801

Family Applications (1)

Application Number Title Priority Date Filing Date
US322490A Expired - Lifetime US3868905A (en) 1973-01-04 1973-01-10 Springmine

Country Status (7)

Country Link
US (1) US3868905A (fr)
BE (1) BE793953A (fr)
CH (1) CH572606A5 (fr)
DE (1) DE2300230C3 (fr)
FR (1) FR2214103B1 (fr)
GB (1) GB1412218A (fr)
NL (1) NL165842C (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4174665A (en) * 1976-07-23 1979-11-20 Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft Land mine construction particularly an antipersonnel splinter mine
US4979444A (en) * 1988-12-24 1990-12-25 Dynamit Nobel Aktiengesellschaft Mine, particularly a land mine
US6606951B1 (en) * 2002-11-07 2003-08-19 The United States Of America As Represented By The Secretary Of The Army Bounding anti-tank/anti-vehicle weapon
US20050115449A1 (en) * 2001-10-12 2005-06-02 Ian Kinley Hand grenade

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1235637A (en) * 1916-08-30 1917-08-07 Marlin Arms Corp Aerial mortar.
US1318357A (en) * 1919-10-14 collier
US2374179A (en) * 1940-07-19 1945-04-24 Us Ordnance Co Land mine
US2457817A (en) * 1944-03-31 1949-01-04 Garland L Harrell Bomb
US2972949A (en) * 1956-01-18 1961-02-28 Norman A Macleod Anti-personnel fragmentation weapon
US3134330A (en) * 1961-07-20 1964-05-26 Energa Projectile
US3175489A (en) * 1962-11-27 1965-03-30 Jr Edwin G Reed Air-delivered anti-personnel mine
US3434418A (en) * 1966-07-06 1969-03-25 Karlsruhe Augsburg Iweka Jumping mine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB574132A (en) * 1942-06-12 1945-12-21 Lewis Motley Improvements in or relating to military land mines
AT294632B (de) * 1968-11-25 1971-11-25 Nationale D Armes De Guerre Sc Munition
DE1931650A1 (de) * 1969-06-21 1971-01-07 Dynamit Nobel Ag Splittergeschoss

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1318357A (en) * 1919-10-14 collier
US1235637A (en) * 1916-08-30 1917-08-07 Marlin Arms Corp Aerial mortar.
US2374179A (en) * 1940-07-19 1945-04-24 Us Ordnance Co Land mine
US2457817A (en) * 1944-03-31 1949-01-04 Garland L Harrell Bomb
US2972949A (en) * 1956-01-18 1961-02-28 Norman A Macleod Anti-personnel fragmentation weapon
US3134330A (en) * 1961-07-20 1964-05-26 Energa Projectile
US3175489A (en) * 1962-11-27 1965-03-30 Jr Edwin G Reed Air-delivered anti-personnel mine
US3434418A (en) * 1966-07-06 1969-03-25 Karlsruhe Augsburg Iweka Jumping mine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4174665A (en) * 1976-07-23 1979-11-20 Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft Land mine construction particularly an antipersonnel splinter mine
US4979444A (en) * 1988-12-24 1990-12-25 Dynamit Nobel Aktiengesellschaft Mine, particularly a land mine
US20050115449A1 (en) * 2001-10-12 2005-06-02 Ian Kinley Hand grenade
US7047887B2 (en) * 2001-10-12 2006-05-23 Forsvarets Materielverk Hand grenade
US6606951B1 (en) * 2002-11-07 2003-08-19 The United States Of America As Represented By The Secretary Of The Army Bounding anti-tank/anti-vehicle weapon

Also Published As

Publication number Publication date
NL7300351A (fr) 1974-07-12
BE793953A (fr) 1973-07-12
CH572606A5 (fr) 1976-02-13
GB1412218A (en) 1975-10-29
FR2214103A1 (fr) 1974-08-09
DE2300230A1 (de) 1974-07-18
NL165842C (nl) 1981-05-15
DE2300230B2 (de) 1978-08-24
FR2214103B1 (fr) 1976-11-05
DE2300230C3 (de) 1982-12-02

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