This is a Griphoist TU-35 (top – out of production but the same type Philippe used in his WTC and Sydney crossings) and the TU-32 (bottom).
The front ends of both hoists.
Here’s a clear view of how the tifor works.
A steel sling goes around the tree; a 25-ton shackle links it together that the hoist links into.
The hoist cable goes out and clips into the walk cable.
A special 5/8″ diameter cable the is made for these hoists is cranked through the unit by levering the large handle back and forth. This cable has to withstand the clenching force of the hoist that is equal to the amount of resistance being pulled.
This is the sling and shackle that the hoist links into.
Here’s the hoist tensioned.
My first time using the T-35 in July of 2010.
This is a closer view of the older T-35 by Griphoist.
And a side view. As you can see the bolt in the end is not the original.