Improvements in or relating to pipes of the socket and spigot type

摘要

649,620. Pipe joints. STANTON IRONWORKS, CO., Ltd., and CORNELIUS, F. B. July 9, 1948, No. 18482. [Class 99(i)] A sealed spigot-and-socket joint for unlined pipes g, f comprises a rubber &c. ring d disposed between the overlapping parts, means, such as a hole h, being provided for introducing grout or other liquid filling material into a space e bounded in part by the ring, and a keyed recess c being provided at the opposed ends of the spigot and socket to receive a sealing material, such as sand and cement, forming a sealing ring. The spigot may be slightly tapered at a. In a modification, Fig. 2, (not shown), the ring is positioned to the left of the hole and the mouth of the socket is sealed with grout &c. which is keyed in grooves on the spigot, a bag made of hessian reinforced by wires being wrapped around the spigot and socket to define the space to receive the :grout. In a second modification, Fig. 3 (not shown), the diameter of the end of the socket is reduced to form a ledge, and the hole h communicates with an external groove.