PURPOSE: To improve reliability on workability, insulation, etc., and to prevent the generation of a defective coil due to disconnection by winding a coil by a continuous electric wire and drawing out a lead-out wire for the coil from other layers, the outer circumferential layer or intermediate layer of the coil, except the inner circumferential layer of the coil.

CONSTITUTION: The connection of a clutch 9 is detached, a rotary disk 4 is turned by a belt 5 and an auxiliary bobbin 6 is brough to the side reverse to a main bobbin 10 while holding a bobbin 1, and an electric wire 11 drawn out of the main bobbin 10 reaches to a winding section 1b through a slit from a winding section 1c, and is stretched to the auxiliary bobbin 6. The electric wire 11 wound on the auxiliary bobbin 6 is wound on the winding section 1b because the auxiliary bobbin 6 is turned around the winding section 1b by rotating the rotary disk 4 and the auxiliary bobbin 6 is turned freely. When the wire of the completion of winding of the electric wire 11 wound on the winding section 1b is fixed temporarily at a proper position so as not to be moved to the bobbin 1 and a motor 3 is driven to turn the bobbin 1 in the direction of rotation of the rotary disk, the electric wire 11 is wound on the winding section 1c from the main bobbin 10.