Abstract: An ignition coil for a spark ignition internal combustion engine has a central core. The central core is cylindrical in shape, and includes a plurality of laminations composed of magnetically-permeable plates that are sector-shaped. The sector-shaped laminations improve the fill percentage allotted for core material. The central core has a central bore extending therethrough that allows a return of a primary winding lead, allowing an odd number of primary winding layers.

Abstract: A coil winding system is provided for making a secondary winding for an automotive ignition coil. The system includes a roller configured to apply a holding force to wire being dispensed from a wire nozzle onto a bobbin. The nozzle and roller are moved by a drive mechanism under control of a controller from one axial end to the other axial end of the bobbin for winding the bobbin in a progressive winding fashion. The roller allows an increase in the winding angle of the layers, which reduces the voltage difference between adjacent layers, thereby reducing incidence of dielectric break down in that region.

Abstract: A combined vibratory feeder drive unit, vibratory feeder bowl, and parts separator receives springs and spring-like parts in bulk, unoriented, and tangled condition and untangles the springs and other parts and feeds them to an operator or automatic parts placing device. The parts separator is supported in a central opening in the bowl by a column arranged passing through the drive unit. Parts are fed from the separator into a pocket formed in the track of the vibratory bowl to prevent the parts from being retangled with other parts already on the track, while parts still tangled when fed from the separator will eventually be fed back into the separator until they become untangled and can be properly oriented by the track of the vibratory bowl.