percussion cap definition
percussion cap means a capsule or case of metal containing not more than 35 milligrams of explosive of the fifth (fulminate) class, the said explosive being covered and protected by a coating of tinfoil or other material approved by an inspector and the said capsule or case not containing an anvil: Provided that where the proportion of fulminate of mercury in the composition does not exceed 25 per cent, the above limit may be increased to 40 milligrams: Provided further that the whole is of such strength and construction that the ignition of one such cap will not ignite other like caps;
percussion cap means a primer which is struck to explode; [2]
percussion cap means a capsule or case of metal containing less than 38.9 mg. of fulminate, and of which not more than 25 per cent consists of fulminate of mercury or less than 32.4 mg. of any other fulminate; when percussion caps contain anvils or when the cap composition if unprotected by tin foil or other suitable substance they shall be deemed to be detonators;
More Definitions of percussion cap
percussion cap means a capsule or case of metal containing less than 40 milligrams of fulminate, and of which not more than 25 per cent consists of fulminate of mercury or less than 32 milligrams of any other fulminate. When "percussion caps" contain anvils or