.~.~.~ By shifting motor brushes or selecting appropriate set of brushes
DEFINITION
Classification: 318/292
(under subclass 291) Subject matter in which means are provided for shifting the commutator brushes to which the armature circuit is connected, or in which means are provided for selectively using one set of brushes at one time and using another set at another time.
SEE OR SEARCH THIS CLASS, SUBCLASS:
541, and the subclasses specified in the Search Notes thereto, for miscellaneous motor control systems having motor brush adjustment or control means.