Step 2: The basics
Like any device that is designed to pull or lift its efficiency is down to the amount of leverage it uses againgst the item to be pulled or lifted.
The design has a gripping device to grab the tree, a heel to pivot on and a long handle to pull back so lifting the roots out of the ground.
The closing of the jaws on the tree will have a 25 to 1 ratio, the levering of the roots out of the ground has a 6 to 1 ratio allowing an easy pull of between 1/4 to 1/2 ton!
There are some large forces involved in this construction but as long as my welding holds up it should work OK.