METAL MOLD FOR MANUFACTURE OF FERROCONCRETE PLATES Russian patent published in 2000 - IPC

FIELD: civil engineering. SUBSTANCE: end groove formers separated from each other by vertical clearances are mounted rigidly at constant step on operating surface of metal mold sides. Distance in plan from axis of one of clearances to conjugation point of sides is equal to half the constant step, and distance from axis of other clearance to corresponding conjugation point of sides is less than half the constant step by constant value. Changeable peripheral groove formers are positioned on bottom plate. Lower part of central groove former is secured rigidly in center of bottom plate. Groove formers of supporting projections are fixed on sides, and/or mating groove formers of supporting projections are also fixed on bottom plate in side installation zone. Sides are mounted for transverse movement along bottom plate. They are provided with lever-removing devices of their opening mechanism. EFFECT: reduced mold nomenclature. 9 cl, 7 dwg