FIELD: devices for locking doors. SUBSTANCE: door lock has body with locking cross- bar formed as rotary disk with segment- shaped cut, plate with slot for receiving a portion of cross-bar, when lock is closed, and two cylinder mechanisms connected with cross-bar. Each cylinder mechanism is connected with gear engageable with toothed gear in lock body. Toothed gear is made integral with cross-bar. Each gear has the number of teeth equal to half the number of teeth of cross-bar. Each gear is mounted within toothed gear. Cross-bar has T-shaped thickened portion extending along its outer diameter. Plate slot has H-section profile circumscribing outlines of cross-bar in the plane intersection of cross-bar with plate. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 13 dwg
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