ABSTRACT
Here you can count on gravity as an aid, but before that can happen the direction of rope travel must change again. If the three lines head downward at the side of the stage they will be much easier to work with. This second change in direction is accomplished with what is called the head block. Again, this pulley is referred to as a block because it remains stationary. In our example, the head block has three sheaves because there are three lines used to lift the batten. The block is constructed so that the three sheaves are side by side in the same housing.
