Abstract: Portable working device for supporting and guiding a working tool, particularly a welding or burning torch. The device has a bogie with a single tube-like axle, the supporting traveling wheels of which are magnets with pole shoes with independent drives. The holder of the working tool is fixed to an arm slidingly arranged within the bogie axle. Since the force maintaining the bogie wheels is magnetic when the workpiece is ferromagnetic, the device is of relatively low weight and is capable of operating in any position. As no part of the device extends beyond the diameter of the supporting traveling wheels, its working range is very extensive.

Abstract: A device for the removal of waste products created during the thermal separation of materials by use of a foam. The device consists of a reservoir having a working grate in its upper portion to hold the material to be cut and an inlet and outlet in the lower portion of the reservoir. Means for feeding foam into the reservoir are connected to the inlet. The outlet is connected to a terminal which has an opening permitting foam to flow from the reservoir and form a protective mantle.