BLASTING CAP AND INITIATING COMPOUNDS Russian patent published in 1995 - IPC

FIELD: means of initiation of blasting charges used in blasting with safety fuze. SUBSTANCE: in blasting cap, containing high explosive and initiator charges and a convex cup, the latter has a spherical recess whose depth is to case inside diameter as 0.3 to 0.5, and a central hole for the diameter of the safety fuze. Aluminium can be used for manufacture of the cup. Initiating compound is also a subject-matter of invention; in addition to lead azide and trinitroresorcinate, it contains fine smokeless nitrocellulose powder with grains measuring from 0.1 to 0.5 mm at the following relationship, mass percent: lead azide- 80 to 85; trinitroresorcinate 7 to 8; nitrocellulose powder the rest. EFFECT: improved design. 2 cl, 1 dwg