Abstract: A method for producing workpieces with surfaces of non-circular but regular cross-sections with a working tool, wherein the workpiece is rotated about its own axis and the axis of the workpiece is rotated around an axis being eccentric to the axis of the workpiece and the two rotations being brought into a certain relationship according to the surface to be generated. According to the invention the axis of the workpiece is rotated mechanically independently from the eccentric axis and the relationship between the two rotations is established and maintained by an electrical control into which parameters of the surface to be produced are fed and with which the rotations of the axis are monitored and, in dependency of the fed-in and monitored factors, into rotational drives of the axes is interfered, respectively.

Abstract: An improved apparatus for filling drums, for example oil drums wherein a drum is advanced to a filling station via a conveyor belt, a filling nozzle is inserted into the fill hole of the drum, the drum is filled, the nozzle removed and the conveyor advanced, which includes a safety switch preventing advancement of the conveyor belt until the filling nozzle is completely removed from the fill hole thereby preventing structural damage to the filling equipment.