EXHIBITS > The elevating mechanisms of the ancient Greeks >
They were constituted by a large axle which was wrapped by the traction rope of the load and the firmly fitted in the axle radial wheels or mobile levers in its special sockets, for the application of required drawing force by the operators. Many times pulleys, cogwheels or even interminable screws for further increase in productivity were brought.
The ground winches for the traction elevation rope and the tautening of the balancing ropes were attached to a stably fastened vertical stake while the winches of scaffolds were placed on horizontal joists with rollers for their unencumbered horizontal shifting.
SOURCES: "Vitrouvios, On architecture X, 1-2", "Heron of Alexandria, Mechanics", "Pappos of Alexandria, Mechanics"