SHELL CASE WITH SEALING SYSTEM FOR USE IN A HISTORICAL PERCUSSION FIREARM

摘要

The subject of invention is the shell case sealing in a historical percussion firearm, with return valve in a rear part of a shell case, characterized in that it is a reusable return valve (1) sliding in a recess of a rear part (6) of a shell case (5), which is a cylindrical bushing (2) with a hole (10) and inner cut out (4) of conical shape with added sliding ball (3) to inside, wherein the hole (9) operating with a ball (3) is bearing the notches (7), positioned symmetrically versus axis of a shell casing.