IL41576A - Mechanical-pyric device for use in mines ejected from the ground - Google Patents

Description

device use mines from the ground ABCO DEVICE UTILIZABLE IN THE TYPE OF MINES WITH A WIDE ACTION RANGE AND GUSHING OUT FROM THE ABSTRACT OF DISCLOSURE device which may be applied to mines having a wide action range and gushing out from the said device an a throw bowl to be incorporated in the ground and ing all the othe elements of the and among the other two firing one for the throw charge and the other for the explosion this latter being fit to be carried into a firing position in an automatic at the time of throwing the mine out of the The present invention relates to a device fit for being applied on mines with a wide action range of the kind termed as out from the that is to say mines which are ejected out from the soil before they This device an igniter which may be acted on through pressure or through a throw bowl to be placed in the containing all the other elements of the mine and equipped with a cover with a peripheral of easy breakage and two firing one for the throw charge and the other for the explosion this latter being fit to be carried into a firing in an automatic at the time of throwing the mine out of the la There shown British patent a land mine adapted to explode above the ground which comprises a base fixed in the ground and containing a propelling charge to eject the casing containing the explosive charge together with a detonator and a striker carried by the In accordance with a preferred embodiment of the present invention the throw charge is housed within the striking mass whereby the thrust of the throw charge drives the striking mass upwards and this in turn drives the ejectable box Hence the priming of the detonator under the actio of the pin takes place only when the striking mass 12 has reached the maximum height that is when the cord instantly stopping the mass while the ejectable box still continues its The device disclosed in British paten involves the possibility that the throw charge thrusts upwards towards the ejectable the detonator against the pin even before the mass moves causing the charge to explode into the The drawings illustrate diagrammatically and by way of example and not for limiting an embodiment of the And more is a sectional diametral view of a mine equipped with devices and the members which are characteristical features of the present and show details and perspective and in the two end views of the second firing pin and the members which support and guide As may be seen in the true igniter is up of a cap on which there are rigidly fastened some as those Indicated at and in the drawing and of which the central one has its top end protruding from the connected to a stumble wire whereas the ends of the peripheral rods also protrude from the soil Said cap rests on the seat of a bearing which at its lower portion is formed with a thread or another fast coupling for securing it to an ejectable body of the mine located in a throw bowl Said bearing is formed at the centre with chambers for containing a small rod 4 top ending through a ball engaged with the cap some small balls a firing pin and a spring The throw bowl contains an ejectable body in which there are placed some fragments of the explosive and a detonating capsule In a middle holeandthe ejectable body there is placed a cylindrical body carrying sidewise a second firing pin Said body contains along its vertical axis a fuse igniting capsule a pyric delay element comprising generally a length of fuse of a slow combustion and a throw charge comprising granules of black enclosed a small bos of inflammable This body is connected to the throw bowl by means of a small lithe for instance a metallic cord which has the aim of holding the cylindrical body when the eject ble body is being throw of the thus 2 and the body guided by a tooth thereof which slides from a helical guide in the body at rotates through bringing the second firing pin onto the vertical axis of the detonating capsule then strikes the capsule itself because this latter continuing to rise bumps thereon through the body This combined displacement to eliminate a spring for the functioning of the firin pin and accordingly ensures a functioning simpler and to make possible the introduction of detonating capsule to acti ate the from top after having previously removed the cap with the bearing in that the pin finds itself a the starting offset with regard to the seat of the It is thus allowed an absolute safety inasmuch as long as the body has not been the cylindrical body resting on the bottom of the throw bowl cannot allow the pin to strike incidentally the capsule because is distant and offset with regard to the The functioning of the device disclosed above and grammatically shown in the is as when by drawing the wire to or through pressure exerted vertically the peripheral rods there is brought about a sloping of the cap this latter jecessarily rises dragging with itself small rod with cage and the firing pin which is engaged therewith through the small balls In this manner the spring is This takes place and goes on till the balls reach the edge much as when they have gone beyond the edge they go out of the the small rod releasing the iring pin which pushed by the spring strikes the fuse igniting capsule Said igniting ignites turn slow combustion fuse after two or three throws its arrow of fire onto the black powder bringing about the ignition of this latter Tha pressure of the gas produced by the combustion of said powder breaks the edge having a predetermined weak of the throw bowl and the electable body with all its contents is hurled upwardly unwinding the cord this cord is tensioned it holds the cylindrical body while the body goes on in its for a short In this manner the side firing pin as already set goes from the position shown in into the position shown in and striked the detonator bringing about the of the explosive and the ejection of the fragments Out of the disclosure which precedes there come about apparent the benefits of the subject matter of the present when confronted with the devices of the of the prior Above all it to be understood that the firing pin e which ought to control the explosion of the works without any this element being always to deteriorate and therefore bringing around always a degree of a disadvantage which is not extant insufficientOCRQuality

Claims (4)

- 5 41576/3· at all in the control of the firing pin illustrated n fig.2 ani fig.3. Furthermore, all the assembly comes about to be very simple and sturdy and therefore it is little expensive as well. C l a i m s;

1. I) A mechanical pyric device, usable with anti-personnel mines of the type ejected from the ground by a throw-charge and deflagrated in the air by an explosive charge to cover a wide actior range, said device comprising an igniter operable either by pressure or traction; a throw bowl concealable in the ground and enclosing an ejectable box containing all the other components of the mine, including an explosive charge, a throw-charge, a first firing pin and a first detonator for said explosive charge, a second firing pin and a second detonator for said -ftrow-charge ; said second firing pin being connected to said igniter and operable to ignite said throw charge responsive to pressure or traction on said igniter, characterized in that said ejectable box contains a striking mass which supports said second detonator in alignment with said second firing pin; said throw charge housed in a lower cavity of the striking mass, and said first firing pin for moving toward and into impact relation with said first detonator; said striking mass being movable within the ejectable box between an upper rest position wherein it bears against an upper wall of the box and wherein it normally maintains said first firing pin in a stable position spaced from and out of alignment with said first detonator, and a lower position for ignition of the explosive charge; means being further provided, comprising a cord for connecti¾¾ said striking mass to the bowl and operable responsive to ejection of said box from said throw bowl into the air to move said first firing pin into alignment with said detonator and then

2. ) Device as claiiaed in claim 1) characterized in that the igniter is made up of a support for the first firing pin, slidable into it and connected in hinge relationship to a spherical cap shaped cover and carrying rods and tie bars controlling the mine.

3. ) Device as claimed in the claim 1) characterized in that the second firing pin, for the ignition of the charge of the mine, when at rest is offset vith regard to the axis of the detonator and is carried by a cylindrical element, slidable into a sleeve equipped vith guides and grooves for a tooth protruding from said cylindrical element and such as to oblige the firing pin to go on to the xis of the detonator when the mine is going out of the ground.

4. ) Device as claimed in claim p, characterized in that the throw bowl of the mine i-e oquippod with a cover ■having a peripheral line of predetermined woaknoos— .order to allow the o ening of the bowl through the- body ejectable from the sf rl howl. · . . - 6 . the charge and all the other components of the mine, •except only the control ones, is equipped with a cover having a peripheral line of predetermined weakness in order to allow the opening of the bowl through the throw charge and the following issuing of all the body ejectable from the said bowl. For the Applicants DR. RHNHQLD COHM AND PARTNERS