Earth working tool

Earth-working equipment comprising a pair of laterally-spaced mounting plates each having a horizontal fixing face for securing said plates to a support frame and a forward edge, an earth-working tool having two ends, a forward and a rearward edge, and a tool point, mounting means for mounting one end of said earth-working tool between said mounting plates and comprising alternative mounting hole positions in one of said earth-working tool and said mounting plates, and further mounting holes in the other of said earth-working tool and said mounting plates such that said forward edge of said earth-working tool is set facing in a forward position as determined by the forward edge of said mounting plates when one of said alternative mounting hole positions is chosen and said earth-working tool is reversed, front to rear, in between said mounting plates when the other of said alternative mounting hole positions is chosen, the forward and rearward edges of said earth-working tool being generally parallel, the equipment also comprising an earth-working tool blade having a top end and a bottom end and each edge carrying a mounting for said tool blade, whereby said tool blade may be mounted adjacent either edge and extend generally parallel to the tool edge rearwardly or forwardly from top to bottom in the respectively normal and reversed mounting positions of said earth-working tool, and attachment means at the other end of said earth-working tool securing the tool point thereto in alternative positions relative to the earth-working tool with the tool point extending forwardly and downwardly from the bottom end of said tool blade at generally the same angle to the horizontal in both the respectively normal and reversed mounting positions of said earth-working tool.