Quote Originally Posted by Toolmaker51 View Post
Speaking of lifts; that 'swing' - moving Ford bodies from upper ramp to line of rolling frames - is there potential like a davit, derrick, gin pole arrangement? Not about high weight, instead bulk. This would be on the 5th wheel frame. Also thought your double jibs is good, into the deck, but I visualize loads wanting placement farther forward.

Been googling those to grasp the pattern and uses. A split gin pole might do well. Part of this, arriving on site, erecting, operating then lowering afterward; single handed.
See this sure developing into an original thread.
Take a look at Palfinger knuckle boom or cranes
Truck mounted fifthwheel crane patent https://patents.google.com/patent/US2604302A/en