Model of a Lifting Screw, Model of a screw duct in a stern with elliptical stern. The screw light device consists of a loose frame with a two-blade screw, which can be lifted up and down in the tube by a rope that runs over two discs at the top of the screw tube and two discs in the screw window. The propeller shaft has a hexagonal end that fits into the propeller. The propeller is disengaged by pulling the shaft into the ship, for which a lever mechanism driven by an endless gear with screw is fitted in the ship, the axle can be shortened by a telescopic section behind the gear. The screw fra

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Size: 6580px × 5366px
Location:
Photo credit: © Gibon Art / Alamy / Afripics
License: Royalty Free
Model Released: No

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