Process and device for directing chisel blows when surfacings are hewn loose from a ground surface

摘要

The present invention relates to a process and a device for aligning hewing chisels 2 when it is planned to place a percussion hammer 1 with hewing chisel 2 at an angle () other than 90 degrees to the ground surface. What is characteristic of the invention is that a counterstay 7 is placed close to the tip of the chisel 2 so that the chisel 2 lies free from torque in its retention in the retaining device of the percussion hammer 6. IMAGE