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.

Abstract: A method for installing a gasket having a first exposed pipe-engaging portion and a second portion which is anchored within a peripheral wall of an opening in a poured-in-place concrete wall. The method includes the first step of erecting a form including an inner wall and an outer wall to define the poured-in-place concrete wall, the outer wall of the form having an opening in the region where the opening in the poured-in-place concrete wall is to be. The second step includes providing an assembly of an inner mold disc having a central particularly defined shape, the gasket, having a particularly defined shape and disposed in a particularly defined orientation, and an outer mold disc having a particularly defined shape. The third step includes suspending the assembly at a desired predetermined location between the inner and outer walls by a depending fixing bar, having a particularly defined shape; the suspending being by a particularly defined bolt structure.

Abstract: A manhole construction for assuring tightly sealing a manhole/sewer pipe connection. The heart of the invention resides in a molded elastomeric circular gasket for resiliently supporting a sewer pipe in a manhole opening and sealing the space between the wall of the opening and the surface of the pipe. The transverse cross-section of the gasket has a generally triangular head, with a forward face provided with an arcuate depressing therein, and a sloping rear face; a generally rectangular body, integral with the generally triangular head and generally "L" shaped leg depending from the body and coextensive with the rear face of the body, the leg of the "L" being directed towards the forward face.