Device for the production of a hollow space in a substratum with greatly different soil layers for pale green manure - or effecting the

摘要

1304916 Boring earth; pile driving L MULLER 30 April 1970 [3 May 1969] 20861/70 Headings E1B E1F and E1H A device for making holes to accommodate pile anchors or other anchoring devices comprises a tube 1 replaceably containing a ram tool consisting of a shaft 10, a cylindrical portion 12 which is a sliding fit in the tube, and a ramming point 11. The bottom of the tube may have a cutting edge or as shown a wedge piece 8a. Impacts are applied to a block 4 on top of the tube and tool. On reaching different strata the ram tool may be replaced by a flushing lance 6 or a drill or auger 16. The anchoring device comprises a drill or auger inserted in the hole and surrounded by a hardening mass with optionally tube 1 being removed.