Pipe junction holder

A pipe junction holder to be mounted on a plug end portion of a first pipe for connecting said plug end portion with a socket end portion of a second pipe, said plug end portion being disposed within said socket end portion, and said socket end portion having an annular flange extending radially outwardly from an opening end wall of said socket end portion, said pipe junction holder comprising a substantially annular body which is conventionally bolted to said annular flange formed with said socket end portion of said second pipe, said annular body comprising a plurality of clamping blocks which are integral with said annular body and are disposed in spaced relation with one another, each of said clamping blocks comprising a hollow internal space defined by a front wall, a pair of side walls, and a top wall, said top wall having an internal inclined surface extending descendingly away from said front wall, said top wall having a non-threaded through hole formed therein which is substantially elliptical in shape so as to provide a longer diameter axis and a shorter diameter axis, said longer diameter axis being directed toward said front wall, said non-threaded through hole is formed so as to be inclined in such a manner that its inner end is disposed near said front wall while its outer end is disposed away from said front wall, a plurality of bolts each of which has a bolt head and a bolt shank which has an integral annular flange formed therewith, said bolt shank having a threaded portion at a lower part thereof, said bolt head projecting outwardly from said hole, said bolt shank passing through said hole in such a manner that it takes substantially the same inclined position as said hole, said bolt being held in position by a stopping means which prevents said bolt head from moving into said hole, said bolt shank being freely rotatable within said hole and movable in a direction of said longer diameter axis of said hole, an upper surface of said annular flange formed with said bolt shank being in contact and slidable relation with said inclined internal surface of said top wall, a pipe pressing member which has an internally threaded hole being mounted on said bolt shank with said internally threaded hole engaged with said threaded portion of said bolt shank, said pipe pressing member being disposed within said internal hollow space of each of said clamping blocks in such a manner that said pipe pressing member is movable together with said bolt shank substantially in the direction of said longer diameter axis of said hole of said top wall but is prevented from rotating about said bolt shank by said side walls of said clamping block, and a plurality of edges being formed with a bottom end surface of said pipe pressing member, each of said edges being of configuration that permits denting into a peripheral wall of said first pipe on which the pipe junction holder is mounted.