Abstract: A chisel arrangement for mining machines includes a rotatable chisel including a working part, a supporting flange arranged adjacent to the working part, and a shaft arranged adjacent the supporting flange, the shaft having a lug and an end flange at an and opposite from the supporting flange. A chisel holder is arranged around apportion of the shaft, and a friction ring is arranged around the lug and at least partially against the chisel holder. The end flange of the shaft, a portion of the lug and a portion of the friction ring are arranged exterior of the chisel holder.

Abstract: A quick-connecting link is disclosed having two identical half-links. Each half-link has two arms. One arm ends in a stepwise section and the other arm ends in a stepwise recess. An insert member is held by parallel pins between the two recessed ends of the assembled half-links. The assembly is held together by an expanded sleeve which extends through the insert member, and which lies between and secures the parallel pins.