Flash hole closure for primer battery cups

Details Flash hole closure for primer battery cups Flash hole closure for primer battery cups

F - Mech Eng,Light,Heat,Weapons

42

B

113/41

F42B 5/02 (2006.01) F42B 3/195 (2006.01)

Patent

CA 1242611

FLASH HOLE CLOSURE FOR PRIMER BATTERY CUPS Abstract of the Disclosure Apparatus and method for covering flash holes in a primer battery cup where the anvil is formed integrally with the battery cup. A tooling apparatus including a tubular foiling pin, and a cutting die plate which, in cooperation with the outside rim of the primer battery cup, blanks out an imperforate, covering-medium disk. As the tubular foiling pin continues to descend into the battery cup, the paper is pierced and slit by the anvil point of the battery cup. The blanked and now perforated disk is inserted further into the battery cup by the foiling pin and seated over the flash holes at the bottom of the cup around the anvil.

491738

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