Abstract: The invention provides a machine based on a known type of vernier electrodynamic machine comprising two parts separated from one another by an air gap arranged along a surface, said parts being movable relative to one another in one direction of said surface such that the width of said air gap (180) is kept constant,the first of said parts (161) consisting of a magnetic armature with N teeth forming N slots opening onto said air gap and being evenly spaced along said direction,the second part (171) comprising either M teeth forming M slots having a different pitch from that of the teeth of said first part arranged along said direction, or P groups of Q teeth with the same pitch as the teeth of the first part, said groups of teeth being staggered to yield said vernier effect, and means for creating in said air gap a magnetic field sliding along said direction relative to said first part, wherein each of said teeth (165, 175) of said first (161) and second (171) parts is provided with magnetic induction generat

Abstract: Apparatus for heating thin items in a continuous pass by induction includes an inductor driven in rotation inside a drum made of refractory material. The strip of material to be heated is driven by rollers in order to form a loop around the drum. When the strip is a metallic one, it forms the inductive element of the device. The inductor generates constant strength magnetic fields which are moved in relation to the inductive element, to thereby heat it.