Drives of distributors or of circuit-makers or -breakers

Full Title

Arrangements of distributors, circuit-makers or -breakers, or pick-up devices (advancing or retarding ignition or control therefor F02P5/00; such devices per se, see the relevant classes of Section H, e.g. rotary switches H01H19/00, contact-breakers, distributors H01R39/00, generators H02K) > Drives of distributors or of circuit-makers or -breakers