MOLD FOR MAKING PRESTRESSED STRUCTURES FROM CONCRETE MIXES Russian patent published in 1994 - IPC

FIELD: molding. SUBSTANCE: mold has longitudinal sides with shaping boxes interposed therebetween, lateral blocks, power slide with grips for reinforcement bars, gates with grooves to receive ends of bars, and locks of end gates located in top and bottom of the mold. Lower lock 10 has the form of L-shaped rod 12 with horizontal sealing plate engageable with lower part of gates to close the grooves. Crimped part of rod 14 is passed through hole made in the longitudinal side for being locked at the outer vertical surface of the mold side. Top lock 11 is fashioned as a horizontal rod 15 with crimped ends pivotally secured to the longitudinal sides. Rod 15 is provided with flexible tube 16 engaging with top part of the gates projecting over upper edges of shaping boxes. End gate has stops in the form of projecting pins 18. EFFECT: enhanced efficiency of the mold. 2 cl, 5 dwg