Abstract: A fused high voltage electrical bushing adapted to be mounted at the entrance in a casing to an electrical apparatus to provide a connection between a high voltage cable and the electrical apparatus, the bushing including a housing formed of a dielectric material and having an axially extending passage, an electrical terminal sealed to each end of said passage, a fusible element within said passage, interconnecting the terminals, and a granular dielectric material completely filling the passage; a layer of electrically conductive material is provided on the inner surface of said passage and extends through the entrance in the casing to the electrical apparatus, the inner layer of material being spaced from and electrically connected to the element, and a layer of electrically conductive material on the outer surface of said housing for forming a stress cone at the entrance of the casing to said apparatus, the stress cone being grounded through said casing, the inner and outer layers cooperating to reduce volt

Abstract: A heating roller apparatus with precise temperature measurement is disclosed which has a rotatable roller member comprising a cylindrical wall defining a room in the inside thereof and an annular groove therein, a heat source means, such as electrically excited induction coils, for heating the cylindrical wall, and a temperature sensor stationarily positioned in the annular groove of the cylindrical wall for measuring a temperature of the cylindrical wall of the roller member. The annular groove has an opening on the outer surface of the cylindrical wall, and two adjacent circumferentially extending wall faces which penetrate into the cylindrical wall in the direction substantially perpendicular to the rotating axis of the rotatable roller member. The annular groove is located at a part of the cylindrical wall adjacent to the end face of the roller member so that the outer surface of the remaining part of the cylindrical wall operates as a heat treating working surface.