A barrena to drill land for the construction of pilots in situ. (Machine-translation by Google Translate, not legally binding)

摘要

An auger for drilling ground for the construction of piles in situ, characterized in that it is structured with a helical body provided with a hollow upper portion, attachable to the tube shank, provided internally with a shut-off valve, and a lower portion, which forms the point of attack, consisting of two complementary halves articulated respectively by opposite ends to the upper portion. (Machine-translation by Google Translate, not legally binding)