Reciprocating Engine No. 514,169. Patented Feb. 6, 1894. Damir Kapustic / Thursday, October 14, 2021 Commutator For Dynamo Electric Machines Method Of Operating Electro Magnetic Motors Print Tags patents Related articles Regulator For Alternate Current Motors Method Of Operating Electro Magnetic Motors Commutator For Dynamo Electric Machines Steam Engine Electro Magnetic Motor