Abstract: An impact contact for ignition tubes mounted on the nose of a projectile and consisting of two substantially rigid parts held together by mechanical fastening means which can yield due to lateral forces acting on the front part. Contact means are arranged at the place of interconnection between the two parts, which contact means are sensitive to a relative motion, in a lateral or axial direction, between the two parts for initiating a burst at a value of said relative motion exceeding a certain value.

Abstract: An automatic switching arrangement in electric fuses for projectiles which can be set on at least three different operational functions, for example proximity fuse function and inpact fuse function with two different sensitivities. The electric fuse comprises at least two separate ignition circuits each having an inhibition control terminal connected to the respective ignition circuit so that this circuit functions normally when the associated control terminal is connected to ground and is deactivated when the ground connection is interrupted. The inhibition control terminals are connected to ground through individual fusible wires. Each fusible wire is connected to an electric contact which is accessible from the outside of the projectile through individual different polarity dependent or amplitude dependent impedance elements. To set the electric fuse on a desired function, the projectiles are moved successively past a setting station comprising a voltage generator.