Abstract: An improved coil forming machine for spreading a simple coil and forming its end turns into a shape to fit into the slots of a rotor or stator. A carriage is mounted to a support frame for free floating lateral movement. The carriage has two sections which are movable laterally closer together and further apart. Each section carries one of the two clamps at each end of the coil forming machine. A hydraulic cylinder moves the sections apart during the spreading operation and the free floating carriage goes to its equilibrium position at which the forces applied to opposite end turns are always equal.

Abstract: An adjustable flexible form for shaping electrical windings is attached between two end supports. The flexible form can be arched by moving the end supports closest to one another. A twist can be imparted into the arched flexible form by rotation of one or both end supports. Intermediate supports can be adjusted against the form to provide rigidity. Both the selected arch and twist of the form are imparted into an object pulled down and across the form.