Abstract: A multi-purpose woodworking machine designed to carry out with the maximum of safety various woodworking operations or jobs such as sawing, planing, sanding, drilling and mortising etc. The tool has an indexible prismatic head on the side walls of which various tool elements are mounted, the tools being driven by independent pulley wheels which in turn are driven by a motor through a transmission belt, or the like. A device for locking the head in a desired position is operable also to displace a base plate on which the drive motor is mounted so as to slacken the transmission belt when the head is unlocked. For driving at least one of the tools, an idler pulley wheel is provided for the transmission belt and this is arranged such that, the tool in question can be driven in any angular position of the head. The locking device is operable by a pedal so leaving the hands of the operator free.