Abstract: A device for contour cutting of metal plates comprises a cutting table for supporting horizontally plates to be contour cut, a contour cutting unit movable along the cutting table, and scrap receiving means for receiving the cut scrap beneath the cutting table. The scrap receiving means is movable by drive means in relation to the cutting table substantially in parallel to the moving path of the contour cut unit and in the moving direction thereof. The extension of the scrap receiving surface in a plane parallel to the supporting surface of the cutting table is larger than the extension in the same plane of the fall zone of cut scrap below the contour cutting unit, and the drive means is controlled to adjust the movement of the scrap receiving means according to the movement of the contour cutting unit in such a way that the fall zone of the cut scrap during the entire contour cutting operation will be maintained in a position within the borders of the scrap receiving surface.

Abstract: A third relay is provided in a signalling apparatus for ships, the apparatus primarily being intended for signalling in poor visibility and comprising an electric signalling device connectable to a current source by means of a first relay, a plurality of alternatively selectable and periodically closable make contacts connected in parallel with each other and in series with the first relay to the current source, and a second self-holding relay for coupling the motor to the current source. The third relay is connected to the current source in series with a plurality of parallel-connected switches for manual signalling, has a break contact coupled into the holding current path of the second relay and at least one make contact for connecting the signalling device to the current source.

Abstract: Apparatus for displaying a corrected value of the total shear force in a given cross-section of a ship, comprising means for generating a signal representing the total shear force in the selected cross-section and means for modifying said signal in relation to the cargo forward and aft of said cross-section.