FIELD: lock production. SUBSTANCE: cylinder mechanism of a lock has a case with rotary cylinder placed inside. It has key hole and ring grooves. Rotary cylinder is blocked by locking pins with flatten spots for spring on one end, and teeth on another. Push rods are coaxial to locking pins. The push rods have two parts coupled with screw connection. Rotary part of a push rod has a slot on its end for a tooth of the locking pin. Key has a rod with lengthwise slot for fixing plank spring loaded with leaf spring. Code ledges are placed on the rod enabling to revolve in discrete manner. The ledges has eyes with recesses for fixing plank. A nut is screwed on threaded end of the rod to tighten packages of code ledges. EFFECT: high reliability. 3 cl, 5 dwg
