GB582420A - Improvements in or relating to devices for simulating small arms ammunition fire - Google Patents

Abstract

582,420. Simulating smallarms fire. JONES, E., LOWE, A. J., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 28, 1943, No. 12263. [Classes 9 (ii) and 119] The noises made by firing smallarms ammunition from machine guns, rifles, sub-machine guns, pistols, &c. are simulated in actual warfare or in representational performances by an explosive device comprising a series of destructible tubular yielding casings each containing a detonator and a delay fuze element, ignition of the successive delay fuze elements being effected by the mechanical shock transmitted to a percussion cap from the immediately preceding detonator through a plug which expands and thereby seals off the casing of that detonator to prevent passage of the resulting compressed gases to the following casing. A safety fuze 1 and metal tubular casing may be crimped on to a delay action detonator 2 containing a detonator 3 and a delay fuze 6 with spit charge 7 housed in a flanged tube 5 which is surrounded by a paper sheath 4, the flange on the tube 5 correctly positioning the spit charge in relation to the detonator. The detonator 3 is separated from the following delay fuze element by a plug 10 of rubber-filled composition, compressed .paper, cork, &c. surrounded by a paper collar 9 which may be crimped in position and which holds one or two percussion caps 12 and anvils 13. When detonation of the charge 3 occurs, shock is transmitted through the plug 10, thereby firing the percussion cap adjacent the following delay fuze element to ignite that fuze , the plug prevents transmission of compressed gases however. The plug may be separate from the. collar 9 carrying the percussion cap or caps. The delay fuze composition may be compressed black powder or compressed lead dinitroresorcinate according to the effect required and the detonator may be azide-styphnatetetryl.