Chisel holder and chisel / chisel holder units for use with shortened chisel holder blocks

摘要

Chisel holder and chisel / chisel holder combinations with shortened quick-change shanks, which can be used optionally in complementary holes in foot blocks, which are also shortened to leave additional space on the back of the foot blocks. When a plurality of such foot blocks are closely spaced on a drum or endless chain, the additional space allows for easier holder replacement and easy access to the back of the bit holder base block bore.