ライデン瓶
The crank wheel is turned by an operator using the knob handle and then the glass cylinder would rotate by an attached belt. The glass jar then rubs against a layered silk cloth pad or a textile cloth pad, developing a high-voltage positive electrical charge. This static electricity charge is then taken off the glass cylinder through a small metal rake and transferred by wire to the Leyden jar storage battery for later use (see close-up illustration). The high voltage stored electrostatic charge kept in the Leyden jar was then on the metal ball on top of the glass storage battery. It would produce a spark visible to the eye when the set of small metal globes attached to the battery were brought close enough to each other as a test experiment in a discharge. The electrical principles of Corbett's electrostatic machine were later used by Edison.