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General arrangement of the Roux Combaluzier

General arrangement of the Roux Combaluzier.jpg Siemens’ electric rack-climbing elevator of 1880ThumbnailsBackmann’s proposed helicoidal elevatorSiemens’ electric rack-climbing elevator of 1880ThumbnailsBackmann’s proposed helicoidal elevatorSiemens’ electric rack-climbing elevator of 1880ThumbnailsBackmann’s proposed helicoidal elevatorSiemens’ electric rack-climbing elevator of 1880ThumbnailsBackmann’s proposed helicoidal elevatorSiemens’ electric rack-climbing elevator of 1880ThumbnailsBackmann’s proposed helicoidal elevatorSiemens’ electric rack-climbing elevator of 1880ThumbnailsBackmann’s proposed helicoidal elevator