FIELD: manufacture of building materials. SUBSTANCE: mould has pallet and borders of which at least one is made mobile. Device for its displacement is made as transfer members connected with drive by means of moving levers. The transfer members have the form of tractions. Some of their ends are connected with exterior side of traveling border, the other ends with moving levers located under pallet. The moving levers are made for turning outside mould. The traveling border can have girder member for the traction fastening disposed along its exterior surface and having roll supports to which tractions are attached. The roll support is equipped with closed rope for its displacement along border. EFFECT: enhanced efficiency. 3 cl, 4 dwg
