FIELD: civil engineering and manufacture of furniture. SUBSTANCE: two brackets are provided with means for rigid fastening to leaves. One or both levers are articulated at one end with a bracket. One or both levers carry a guide on the ends for reciprocation of the articulated joint with the bracket. Two levers are articulated by one end with each other. An extension spring is connected with the levers so that a straight line connecting the points of its fastening in the end positions of the leaves is positioned on different sides from the point of articulated jointing of levers. EFFECT: improved design. 4 cl, 6 dwg
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