Apparatus for fabricating a pipe joint sealing device

Abstract

Abstract This disclosure relates to an apparatus for fabricating a pipe joint sealing device, this device including a concrete structure, such as a manhole, having an opening in the wall thereof provided with a rubber lining or gasket. It is the purpose of this invention to provide the concrete structure with the sealing ring or gasket permanently locked therein in fluid-tight engagement. The apparatus includes an annular support preferably fabricated of glass fiber reinforced plastic, this support resembling the wheel and rim of an ordinary automobile wheel which is adapted to mount the usual rubber tire. This support is radially divided into two annular or disc-like sections, one of the sections having an annular support or boss adapted to receive thereover in coaxial relation a rubber-sealing ring. The two support sections are detachably secured together so as to retain the sealing ring in position, and the support is further designed with radially outwardly extending sides which define a generally U-shaped cross-section or channel. This channel shape is of such size that the sealing ring seats on the base thereof with the sides extending angularly outwardly therefrom. In the use of this apparatus, the support or form with the sealing ring thereon is supported in position in a concrete mold set up for casting a concrete structure, such as a manhole. Liquid concrete is introduced into the mold in the usual manner in encircling relation to the form and rubber ring and caused to harden. The form sections are eventually removed leaving the sealing ring securely cast and locked into the perimeter of the opening formed by both the sealing ring and the support form.

Inventors

• 👤 H Skinner
• 👤 F Deeb

Bibliographic Details