Museo Galileo
Virtual Museum
Model of Archimedean screw or cochlea
    • Setting:
      Room XIII
    • Inventor:
    • Maker:
    • Date:
      second half 18th cent.
    • Materials:
      wood, brass, glass
    • Dimensions:
      height 750 mm, base 800x210 mm
    • Inventory:
    • Model of Archimedean screw or cochlea (Inv. 999)

The machine is built on the same principle as item inv. 998 and, like the latter, is known as an Archimedean screw, after the scientist who first designed such a device. A brass plate is hinged to a wooden base and its tilt can be adjusted by means of a sliding brass stirrup. The plate holds a glass tube closed at both ends by two brass stoppers and fitted with a handle. The stoppers carry small elastic strips holding a helical glass tube. Water is raised through the tube by rotating the handle. Provenance: Lorraine collections.