MOULDS FOR PRODUCING CONCRETE-TUBULAR

摘要

The mould comprises an inner mould member for the arch shaped portion of the casting, L shaped inner side mould members swingably connected to the ends of the inner frame and extending over the sides to points of the bottom portion and a separable inner mould member detachably connected between the free ends of the inner side members. The mould is sepd. from the casting by swinging the inner side members inwardly after removing the separable inner mould. It is useful for sewer pipes of horseshoe section or bent pipes of others shapes. It is easier to assemble and disassemble.