Thomas A

Tuesday 19th January 1904

Thomas A. Edison was granted a patent for an” Electrical Automobile” (US Patent No. 750,102) designed with a driving motor that could be used for the purpose of charging the batteries. A small steam engine was connected to the armature of an electric motor. By reversing the rotation of the motor-armature, the electric motor could be converted to a generator for charging the batteries. A clutch then was used to disconnect the motor from the driving wheels during charging (or, the wheels could be jacked up during the charging operation). In usual operation, the motor ran from storage batteries to power the carriage.

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