FIELD: ironmongery. SUBSTANCE: invention refers to procedure encoding cylindrical mechanism of lock including body, cylinder and ring. Cylinder is mounted in case for turn around axis and ring is positioned around cylinder to prevent cylinder against turn and subsequent decoding of cylindrical mechanism of lock. Ring is pressed against case and is jointed to cylinder by means of thread with implementation of condition in conformity with which friction force of rest between ring and case exceeds friction force of rest between turns of helical thread of cylinder and ring. Ring is pressed against case with spring. There are proposed several versions of cylindrical locks. EFFECT: enhanced functional reliability of lock. 11 cl, 8 dwg
