F - Mech Eng,Light,Heat,Weapons – 42 – B
Patent
F - Mech Eng,Light,Heat,Weapons
42
B
102/11
F42B 3/00 (2006.01) F42B 3/087 (2006.01) F42B 3/26 (2006.01)
Patent
CA 1150100
PI-0228 TITLE Field-Primable Chub Cartridge Having A Longitudinal Threading Tunnel Integral Therewith ABSTRACT OF THE DISCLOSURE A chub cartridge has a tubular chamber con- taining a water-bearing blasting agent, and a longitudinal tunnel adjacent to the tubular chamber and integral therewith. Preferably, the tunnel is full-length and continuous and has holes for threading a detonating cord therethrough and for holding a cord firmly against the tubular chamber for the cord priming of the cartridges. In primer assemblies, the tunnel also can be used to hold a cap/booster in place, and for lacing cap wires or a low-energy detonating cord. A preferred cartridge is made continuously in a series by wrapping a web of film having a row of holes along one edge so as to form a tube and an outer flap con- taining the holes, and sealing the tube and the flap so as to form a tunnel containing the holes in its outer portion, the wrapping being performed so that either the inner or outer portion of the tunnel is circum- ferentially longer than the other.
349220
Forgey James H.
Stephens Donald R.
Tan Engnam A.
Eti Canada Inc.
Eti Explosives Technologies International Ltd.
Mccallum Brooks & Co.
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