Abstract:
A vibration-sensitive electric switch, for use in percussion or vibration fuses, particularly for hand and rifle grenades, as well as mines, having a pair of contacts, one of which is supported for movement into contact with the other contact in response to application of forces thereto and at least one of said contacts being deformable at least in the area of contact with said other contact so as to increase the contact time therebetween.
Abstract:
A propagation primer containing a primer charge having a composition comprising, by weight, approximately: 40-60 PERCENT OF BARIUM NITRATE 10-20 PERCENT OF AN ALUMINUM-MAGNESIUM ALLOY 5-20 PERCENT OF LEAD DIOXIDE 6-10 PERCENT OF ZIRCONIUM HYDRIDE, AND 1-5 PERCENT OF BORON The composition is substantially insensitive to friction and shock. For propagation over larger distances, additional specific primer compositions may be employed.
Abstract:
An electrical primer having a pole piece, a plated element having an ignition bridge, a casing member and an ignitable charge arranged within an electrically conductive housing such that the ignitable charge is in operative relation with the ignition bridge and an electrically conductive connection is provided between the pole piece and the housing via the plated element and the casing member. The pole piece is accessible from the outside of the housing and is provided with a recess in the side portion facing the ignitable charge and the plated element is arranged within the recess such that the bottom surface thereof rests on the bottom of the recess of the pole piece. The plated element may also have a peripheral surface portion resting against the wall portion of the recess.
Abstract:
A control element to be electrically ignited for pin retraction, wherein the pin is guided in a housing in which the electrical primer element is accommodated and is optionally provided with a delay device. In the starting position, a compression spring presses the pin with an integrally attached piston against the primer element. The piston rests on a supporting element of the primer element. After ignition of the primer element, the compression spring presses the pin with a residual force against the remaining portion of the supporting element which has been penetrated.
Abstract:
A magazine for caseless propellant charges which are entirely consumed leaving no residue after burning, for use in both military and commercial applications, including an extended flexible band having a plurality of recesses, each adapted for receiving a single propellant charge, spaced along the length of said band. Additionally, the band may incorporate a plurality of depressions, apertures and/or projections spaced along the length thereof for indexing of the magazine relative to the activating device. Further, a readily detachable foil may be secured adhesively along one or both major surfaces of the band to retain the propellant charges with the respective recesses and simultaneously shield them from heat which could cause accidental detonation.
Abstract:
A vibration-sensitive electric switch comprising a housing and two contacts disposed therein, one of the contacts being a vibrating contact and coming into contact by vibrational movement with the other contact which is fixedly arranged in said housing, at least one of the contacts being deformable in the area of contact with the other contact, wherein the fixedly disposed contact and the vibrating contact overlap without contact at at least two points along their axial extension when the switch is in the armed position and wherein the fixedly disposed contact is continuously bent laterally by the vibrating contact when a predetermined accelerative force has been exceeded, whereby the vibrating contact in the deflected condition is in constant contact with the fixedly disposed contact.
Abstract:
A percussion or vibration fuse device, particularly adapted for use in connection with hand and rifle grenades and mines, incorporating a time delay following actuation, in turn followed by a displacement of a battery to establish an electric current upon vibration and cause detonation of the explosive charge.