The tanks of one cabin were refilled at the upper station, allowing its descent under gravity with the combined weight of the passengers and water, enabling the other carriage to ascend. A steam engine situated at the lower station worked the filling pumps at the upper station.
The tanks of one section were replenished at the higher platform, allowing it to descend under gravity with the combined weight of passengers and water, while enabling the other carriage to ascend. A steam engine situated at the lower platform operated the filling pumps at the upper platform.