Henry next turned to the possibility of a magnetic engine for the production of power and succeeded in making a reciprocating-bar motor, on which he installed the first automatic pole changer, or commutator, ever used with an electric battery.
(Henry; turned; to the possibility of a magnetic engine for the production of power; T:next) (Henry; succeeded; in making a reciprocating-bar motor) (he; installed; the first automatic pole changer, or commutator)
Henry Henry he
turned succeeded installed
to the possibility of a magnetic engine for the production of power T:next
in making a reciprocating-bar motor
the first automatic pole changer, or commutator