Rockbreaking implement for percussive machines
Sep 29, 1981 · The rockbreaking implement of the selfpropelled percussive machine for driving boreholes, shown in FIGS. 6 through 9, functions in the following manner. Upon receiving an impact impulse from the hammer piston 2 (FIG. 1) of the machine, the rockbreaking implement 4 penetrates, with its wedges 14 (FIG. 6), the face rock to break it.