Posted by Posh Ed on October 14, 2004 at 18:31:23:
In Reply to: In reply to Paul Taylor posted by eightybee on October 08, 2004 at 17:12:42:
A Commutator - an attachment connected with the armature of a dynamo which directs and makes continuous the current produced (The Concise Oxford Dictionary - Ninth Edition)
in laymans terms this is the multi sectional copperry bit that sparks in your dad's old Black & Decker
hope this helps
ED
p.s. Only logged on to print out he AGM agenda