Abstract: Apparatus for coupling a tool to a rotating spindle comprises a support in which the tool may be accommodated in a position to be fitted into a spindle cavity. Engagement between the rotating spindle and the tool imparts rotation to the latter. The tool is subjected to a subsequent retardation to effect relative rotation between the tool and the spindle in such manner as to actuate a latch and secure the tool to the spindle.

Abstract: A tool support assembly comprising a rotary spindle which carries a tubular body having a socket therein for the removable accommodation of a coupling member to which any one of a number of tools may be fitted. The coupling member is adapted to be fitted to the tubular body during rotation of the spindle and thereafter to be driven by the spindle. Yieldable, shock absorbing, replaceable plates are carried by the coupling member and the rotary body to cushion the initial engagement therebetween. The coupling member and the socket have axially elongated, complementally tapered and cylindrical surfaces to provide substantial lateral stability for a tool supported by the coupling member.