| 摘要 |
Corer comprising a plurality of core barrel assemblies 100 a-j, a drive mechanism 128 and an attachment mechanism. Each core barrel assembly has a scorer (108, fig 1) which marks the core / sample obtained enabling the orientation of the sample to be determined. The attachment mechanism attaches each of the core barrel assemblies in sequence to the drive mechanism and the marking knife is oriented to a predetermined / known position. The core barrel assembly may comprise of a fixed inner barrel with the scorer on its inner surface and a rotatable outer barrel. The attachment mechanism may have a conveyor 140 to move the core barrel assemblies to the drive mechanism 128. Preferably there may be a mechanism to alter the angle of drilling. A second independent claim concerns a drive transmitting element biased to be disengaged with the core barrel assembly and move able by actuator to an engaged position. |
