NO119974B

NO119974B -

Info

Publication number: NO119974B
Application number: NO163389A
Authority: NO
Inventors: C Schrader; J Marcotte
Original assignee: Eversharp Inc
Priority date: 1965-06-11
Filing date: 1966-06-10
Publication date: 1970-08-03
Also published as: GB1130977A; US3378922A; DK119915B; NL6608092A; SE308460B; BE682340A

Description

Landmine. Land mine.

Foreliggende oppfinnelse angår landmi-ner av den art, som er forsynt med en detonator bestemt til å initieres ved hjelp av en perkussjonsanordning og som er forsynt med et til alle sider svingbart utløsningsor-gan, som ikke påvirkes av trykkbølger i luften men bringes til å virke ved skjev be-lastning, når minen betredes eller påvirkes av et kjøretøy eller lignende. The present invention relates to landmines of the kind which are provided with a detonator intended to be initiated by means of a percussion device and which are provided with a release device which can be pivoted to all sides, which is not affected by pressure waves in the air but is caused to work in case of biased loading, when the mine is stepped on or affected by a vehicle or the like.

Det karakteristiske hovedtrekk ved oppfinnelsen er at utløsningsorganet er lagret i et sfærisk lager med konsentriske lagringsflater og er anordnet til å bringes i virksomhet ved svingning av dette organ i et hvilket som helst radialplan gjennom det sfæriske lagers svingecenter. The characteristic main feature of the invention is that the release member is stored in a spherical bearing with concentric bearing surfaces and is arranged to be brought into operation by swinging this member in any radial plane through the spherical bearing's center of rotation.

I det følgende beskrives oppfinnelsen nærmere under henvisning til vedføyede teg-ning på hvilken fig. 1 og 2 som eksempler viser to forskjellige utførelsesformer for minen ifølge oppfinnelsen. Minen er på begge figurer vist i vertikalsnitt. In the following, the invention is described in more detail with reference to the attached drawing in which fig. 1 and 2 as examples show two different embodiments of the mine according to the invention. In both figures, the mine is shown in vertical section.

Ved den i fig. 1 viste utførelsesform er sprengladningen 1 anbragt i en oventil åpen kalottformet beholder 2 i et sfærisk segment, som til alle sider er bevegelig i en skål 3 med sfærisk bunnflate. Beholderen 2 er sfærisk lagret i skålen 3. Skålen 3 er forsynt med en sylindrisk flens 4, som sammen med skålens midtparti danner minens støtte på marken. Beholderen 2 er forsynt med et sentralt rør 5, i hvis øvre ende der er skrudd inn en detonator 6. Denne detonator er på vanlig måte forsynt med en sprengladning og en tennsats, bestemt til å påvirkes av en perkussjonsanordning. Denne anordning består i det viste eksempel av en slagstift 7 som styres i et sylindrisk stempel 8, som normalt sperres av kuler 9 mot virkningen av en fjær 10. Stem-plets 8 nederste tilspissede ende befinner seg normalt i en uttagning 11 i skålens 3 sfæriske flate. Minen i sin helhet er lukket med et elastisk lokk 12 av gummiduk eller lignende. By the one in fig. In the embodiment shown in 1, the explosive charge 1 is placed in a top-open dome-shaped container 2 in a spherical segment, which is movable to all sides in a bowl 3 with a spherical bottom surface. The container 2 is spherically stored in the bowl 3. The bowl 3 is provided with a cylindrical flange 4, which together with the middle part of the bowl forms the mine's support on the ground. The container 2 is provided with a central tube 5, in the upper end of which a detonator 6 is screwed in. This detonator is normally provided with an explosive charge and an igniter, intended to be affected by a percussion device. In the example shown, this device consists of a firing pin 7 which is controlled in a cylindrical piston 8, which is normally blocked by balls 9 against the action of a spring 10. The lowermost pointed end of the piston 8 is normally located in a recess 11 in the bowl 3 spherical fleet. The mine as a whole is closed with an elastic lid 12 of rubber cloth or similar.

Når minen betredes, virker sprenglad-ningsbeholderen 2 som utløsningsorgan for perkussjonsanordningen, ved at beholderen herved dreies i sitt sfæriske lager, så at de to lagringsflater forskyves i forhold til hver-andre. Som følge herav presses stemplet 8 oppover i røret 5, inntil sperrekulene 9 kom-mer på høyde med en utvidet del av røret 5. Herved presses kulene ut av sin sperrede stilling og frigir slagstiften 7, som ved påvirk-ning av fjæren 10 slynges mot detonatoren og tenner sprengladningen. When the mine is stepped on, the explosive charge container 2 acts as a release device for the percussion device, in that the container is thereby rotated in its spherical bearing, so that the two bearing surfaces are displaced in relation to each other. As a result, the piston 8 is pressed upwards in the tube 5, until the locking balls 9 are at the height of an extended part of the tube 5. This pushes the balls out of their locked position and releases the firing pin 7, which, by the action of the spring 10, is thrown towards the detonator and ignites the explosive charge.

I den i fig. 2 viste utførelsesform er slagstiften 7 festet i en fjærende skive 13, en s.k. bellevillefjær. Av denne skive holdes slagstiften normalt i anlegg mot en kule 14, som er lagt inn i et hull i en sentral del 15 av beholderens 2 bunn. Herved holdes kulen samtidig i inngrep med den sentrale uttagning i skålen 3. Når beholderen 2 stilles In the one in fig. 2, the firing pin 7 is fixed in a springy disk 13, a so-called belleville feather. By this disk, the firing pin is normally kept in contact with a ball 14, which is inserted into a hole in a central part 15 of the container 2 bottom. In this way, the ball is simultaneously held in engagement with the central recess in the bowl 3. When the container 2 is placed

skrått skyves kulen 14 oppover, hvorved slagstiften 7 og fjæren 13 føres over den labile likevektsstilling så at detonatoren påvirkes. the ball 14 is pushed obliquely upwards, whereby the firing pin 7 and the spring 13 are moved above the unstable equilibrium position so that the detonator is affected.

Minen kan sikres ved å skrue bort detonatoren 6. For å forhindre utilsiktet spreng-ning ved utlegning av minen forsynes denne for utlegningen med et låkk 16, med en sylindrisk flens 17, som omslutter minen. Når minen er anbrakt på plass føres detonatoren inn gjennom en sentral åpning i låkket 16 og skrues fast på plass, hvoretter låkket 16 tas bort. The mine can be secured by unscrewing the detonator 6. In order to prevent accidental detonation when laying the mine, this is provided with a cover 16, with a cylindrical flange 17, which encloses the mine. When the mine is in place, the detonator is inserted through a central opening in the lid 16 and screwed into place, after which the lid 16 is removed.

Det fri rom på undersiden av skålen 3 kan eventuelt fylles med en sprengladning. The free space on the underside of the bowl 3 can optionally be filled with an explosive charge.

Beholderen 2 og skålen 3 kan fremstilles av The container 2 and the bowl 3 can be made from

plastmateriale. Forøvrig fremstilles minen plastic material. Otherwise, the mine is produced

hovedsakelig av umagnetisk materiale med mainly of non-magnetic material with

unntagelse av selve slagstiften, som bør være except for the firing pin itself, which should be

av stål. Også fjæren 13 kan være av umagnetisk materiale. of steel. The spring 13 can also be made of non-magnetic material.

Et jevnt fordelt trykk på minens over-side kan åpenbart ikke forårsake utløsning An evenly distributed pressure on the upper side of the mine obviously cannot cause release

av perkussjonsanordningen. Følgelig kan minen påvirkes av trykkbølger som forårsakes of the percussion device. Consequently, the mine can be affected by pressure waves that are caused

av sprengninger i dens nærhet. of explosions in its vicinity.

Claims

1. Landmine provided with a detonator affected by a percussion device and a release device pivotable to all sides, which is inactive for pressure waves in the air but is brought into action by an oblique load, characterized in that the release device (2) is stored in a spherical bearing with concentric bearing surfaces and is arranged to be brought into operation by swinging this member (2) in any radial plane through the center of swing of the spherical bearing.

2. Landmine according to claim 1, characterized in that the percussion device (7) is arranged to be triggered by a movable body (8, resp. 14) inserted centrally in one of the storage surfaces, which is affected by the displacement of the storage surfaces in relation to each -second. •

3. Landmine according to claim 1 or 2, characterized in that the trigger (2) is designed as a dome-shaped container, in which the percussion device (7) is centrally arranged.

4. Landmine according to claim 3, characterized in that the explosive charge is placed in the dome-shaped container.

5. Landmine according to claim 3 or 4, characterized in that the container has a flat upper side.

6. A land mine according to any one of claims 3-5, characterized in that the container around its edge is elastically connected to a bottom part (3, 4) of the mine.

7. Landmine according to claim 6, characterized in that the container is closed at the top with an elastic lid (12) which encloses the sides of the bottom part (3, 4) and thereby connects the container to the bottom part.

8. Landmine according to any one of claims 2-7, characterized in that the dome-shaped container is locked in the inactive position with an elastic lid (16, 17) which includes the container (2) and the bottom part (3, 4).

9. A landmine according to any one of the preceding claims in which the percussion device is arranged to be actuated by a Belleville spring carrying the firing pin (7), characterized in that the Belleville spring (13) is arranged to be actuated by a ball (14 ) arranged in a recess (11) in the lower bearing surface (3), which ball is displaced in the radial direction by turning the release member (2). Publications cited: U.S. Patent No. 2,514,401.