interpole

plural interpoles

1. businessAn auxiliary pole of a commutator placed between the main poles to increase its efficiency.

   During the same 29 min. the rise in temperature of the interpole windings of the main generator was 30° C.

   1960 May, “Testing a Brush Type "2" diesel locomotive”, in Trains Illustrated, page 304

   1 more example

   Both types, however, were without interpoles and had sleeve bearings which required constant attention for lubrication.

   1951 January, “The Inner Circle and its Rolling Stock”, in Railway Magazine, page 59