Abstract: Conveying device for continuous threads with a thread accumulator to which there is coordinated a brake mechanism, regulating the thread feed, and a coupling mechanism comprising an annular magnet (10) whose winding (9) is surrounded by a two-piece housing concentrating the magnetic field lines, one housing part (7) being rotatably mounted and permanently connected with the drive and forming a slot (11) relative to the other, stationary housing part (8), the slot width, in the peripheral direction, varying in uniform distribution, and into which slot there is inserted a ring (14) made of electrically conducting material, which ring is jointly rotatably connected with the power take-off axle (18).