Abstract: A self-centralizing sealed diverter for aiding the surface collection of underground samples including a rigid casing driven into the ground to line a partially drilled hole, a rigid chamber mounted above and firmly but removably attached to the casing to receive drill samples, a sleeve fastened to the top of the chamber and including a stuffing box having a self-lubricating stuffing gland which lines the box, a journal removably mounted on the top of the sleeve for journalling a drill rod and for axially locating initially the stuffing gland, a casing including a bearing for aligning the rod with respect to a drill head, a protective top-plate attached to the bearing casing, and a pressed-in bush interposed between the rod and the bearing.

Abstract: A self-centralizing sealed diverter for aiding the surface collection of underground samples including a rigid casing driven into the ground to line a partially drilled hole, a rigid chamber mounted above and firmly but removably attached to the casing to receive drill samples, a sleeve fastened to the top of the chamber and including a stuffing box having a self-lubricating stuffing gland which lines the box, a journal removably mounted on the top of the sleeve for journalling a drill rod and for axially locating initially the stuffing gland, a casing including a bearing for aligning the rod with respect to a drill head, a protective top-plate attached to the bearing casing, and a pressed-in bush interposed between the rod and the bearing.