Cylinder Breech Block Device of a Repeating Firearm

A cylinder breech block device (100) of a repeating firearm having a breech block cylinder (200) pivoted in a system housing (160) of the repeating firearm for execution of repetitive action thereof and capable of being locked to said system housing (160) for firing a round, in which a firing pin (140) capable of being cocked by a tension spring is mounted for linear displacement in the direction of a cartridge (141) stored in a magazine (141) of a barrel (143), characterized in that:

• cocking of the firing pin (140) is effected by causing rotation, through a predefined angle, of a breech bolt handle (300) rigidly connected to a tension crown ring (400) that is pivoted on a central shaft (210) of the breech block cylinder (200);
• a plurality of equidistantly disposed tension cam crowns (410) are on said tension crown ring (400) and at least one clamping sleeve cam (510) that is formed on a clamping sleeve (500) mounted on a central shaft (210) for linear displacement along the longitudinal axis thereof being adapted, when said tension crown ring (400) is rotated, to cooperate with at least one tension cam crown (410) attached to said tension crown ring (400) in order to move the clamping sleeve (500) coupled to said firing pin (140) to a position away from said magazine, and during the course of movement of said firing pin (140), to a position at a specified distance from said tension crown ring (400), said tension cam crowns being disposed on the tension crown ring (400) and adapted for folding-symmetrical movement about at least two differently oriented symmetry axes, the combination of tension cam crowns and clamping sleeve cams being such as to produce a laterally symmetrical or folding-symmetrical structure of a left-right alternating system.