Joints

Claim 1

A socket and spigot pipe joint wherein the socket has an axially inward shoulder having an inner diameter smaller than the outer diameter of the spigot limiting axially inward movement of the spigot, a resilient sealing ring in the space between the spigot and socket compressed between the inside of the socket and the outside of the spigot and means for detachably retaining the spigot in the socket, said means comprising at least one radially inward circumferential flange on the outer end of the socket, each said at least one flange having at least one circumferential section, the free inward edge of each flange section being widely spaced from the outside of the spigot at one end and converging towards the outside of the spigot towards its other end, and a separate circumferential wedge having an outer portion and a depending portion extending therefrom received in the wide space of each said at least one flange, each said wedge depending portion being channelled along its outer edge receiving the respective flange and having a thickness, with respect to the radius of said spigot, greater at the trailing end than the leading end, each said wedge depending portion being cIrcumferentially displaceable towards the narrow space of the respective flange so as to wedge the socket and spigot together against relative axial displacement.