Apparatus for forming an opening with a gasket in a masonry manh

Static molds – Uniting preform with molding material – Split mold clamps and supports preform

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Details

249 11, 249 39, 249 96, 249145, 249147, 249177, 249184, B28B 728, B28B 2300

Patent

active

048545430

ABSTRACT:
An assembly is provided for installing a resilient gasket having a projecting, pipe-engaging portion and an anchoring portion fixed in the peripheral wall of a circular opening in a masonry manhole construction, the masonry manhole construction having an inner face and an outer face. The assembly consists of an inner mold disc of a particular recited shape, an outer mold disc of a particular recited complementary shape, and a rectangular fixing bar including a plurality of longitudinally spaced-apart holes therein, and bolts passed through aligned selected apertures in the rectangular fixing bar, in the inner mold disc and in the outer mold disc. In such assembly, the inner mold disc is temporarily secured to the outer mold disc with the elastomeric gasket locked therebetween. A flange is provided at the upper end of the rectangular fixing bar for suspending the assembly from the masonry manhole construction.

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