Abstract: A method for cutting a sticky plastically deformable material, placed on a surface of a glass pane by employing a jet-like cutting medium.

Abstract: In a vehicle body, the aperture for the pane or window comprises a mounting flange stepped towards the interior of the vehicle. The pane of window is adhesively fixed to that mounting flange along a peripheral edge portion. Along the edge of the mounting flange remote from the aperture for the pane or window a gap sealing member is adhesively fixed to the stepped portion of the mounting flange. The gap sealing member is an endless hollow profile member corresponding in size to the perimeter of the pane or window and is elastically deformable. The use of such a gap sealing member is much less expensive that known sealing members of this kind, offers good appearance and may be easily mounted while it effectively seals the gap between vehicle body and pane or window against dirt and moisture.

Abstract: Apparatus for generating ultraviolet radiation of high spectral radiance whereby the radiation is produced in a discharge tube having a thermoemissive cathode and a discharge space and filled with mercury/argon by means of a wall-stabilized direct-current gas discharge at a mercury pressure p.sub.Hg of between 5 .times. 10.sup.-.sup.3 and 5 .times. 10.sup.-.sup.1 Torr and a current density j of the discharge current I of between 1 and 25 A/cm.sup.2. The discharge tube incorporates a pressure-equalizing space connecting the cathode space to the anode space whereby the sum of the volumes of the cathode space, anode space and pressure-equalizing space is greater than the volume of the discharge space. The pressure of the argon is maintained between 0.01 and 10 Torr. A first control element is provided which regulates the current density j of the discharge current I to a constant value j.sub.O between 1 and 25 A/cm.sup.2. A second control element is provided which regulates the pressure p.sub.