Notes on commutators

(Associate Member): Mr. Kind's paper on commutators, brush gear, communication, etc., is a very interesting one, and one which I think should bring forward a good deal of discussion. Although the majority of our members have little to do with commutator machines today, still most have had an early experience with them, and some may at any day be brought into touch with them again, especially with the advent of electrification of railways.