Position of sign B. Quarry of Group C. Quarrying techniques, bindings, Counterweights, Cranes

Position of sign B. Quarry of Group C. Quarrying techniques, bindings, Counterweights, Cranes

en

ALK.20.01.01

40.60179

24.73899

The crane which is represented by the drawing, is the so-called "lifting machine of the human cage." It is about a structure of two wooden beams in “Λ” shape, used for lifting heavy loads. The load was lifted or descended with ropes wrapped around a coil. The coil was linked with at least one radial wheel (cage) in which one or more men walked. In the picture the wheels of the lifting machine are two. Other ropes held the crane stable and controlled the change of inclination. Basic source of information for such machines is the Roman writer Vitruvius and his work: "On Architecture" (De Architectura).

The crane, which is represented by the drawing,, is the so-called "lifting machine of the human cage." It is about a structure of two wooden beams in “Λ” shape, used for lifting heavy loads. The load was lifted or descended with ropes, wrapped around a coil. The coil, was linked with at least one radial wheel (cage), in which, one or more men walked. In the picture,, the wheels of the lifting machine are two. Other ropes held the crane stable, and controlled the change of inclination. Basic source of information for such machines, is the Roman writer Vitruvius and his work,: "On Architecture".

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