The most common type operates on a pulley system.

There was only a pulley system, not yet deployed.

It was to be deployed by a pulley system at the top of the mast in 6-8 minutes.

When the performance was complete, the artist was lowered from the pulley system.

The whole mill is run off a single engine by an intricate pulley system.

Access to the sea was via a pulley system with basket.

Over a period of days, the hips are gradually moved outward from the body using a pulley system.

The power to the Mill was all belt driven through a pulley system.

You really needed other men above, using an improvised pulley system.

The baptistery is behind it, separated by a large door on a pulley system.