Abstract: The invention relates to a steering column jacket of the steering column of motor vehicles which surrounds the steering spindle and contains a steering column assembly having a steering column switch or a switch rest. The steering wheel end of the steering column jacket forms a sleeve portion closed in the circumferential direction and receives a steering spindle bearing. From the front end of the steering column jacket a longitudinal rib extends, the flanks of which lead the steering column switch during the assembly, a window for the locking pin of the steering column lock being adjacent thereto.

Abstract: A rotary ignition switch has a pair of tiltable bridges extending in opposed directions and spring-pressed toward a center contact. When the switch is rotated a first end of one bridge remains against the center contact while its other or contact end rides up a helical cam track. The first end of the other bridge rests on the one bridge while its other or contact end also rides up a helical track. The contact ends of both bridges then drop off the helical cam tracks onto fixed contacts to complete respective circuits.