Abstract: In order to sever planar textile structures, specifically for a severing and welding of edges of fabrics a heatable wire loop is located on a mount consists of a ceramic body through which two contact elements extend. At one end of the contact elements, projections lie arrested against rotation in a recess of the mount, at the other end nuts are arranged on a thread. In order to mount the apparatus, a mounting opening is foreseen which is adapted to receive a mounting rod, a clamping body is provided which can be tightened through a screw against the mounting rod wherewith detrimental tensile stresses in the ceramics body can be avoided to a large extent.