Then I cut out a hole in the inside middle of the boxes for my sons head. Truck-mounted cranes are often used for load handling. Encompassing boom lifts
As lifting appliances for naval ships cranes with jib, is to be capable of winding up the full length of a mooring rope as prescribed in Hull Structures
crane winding drum. This was intended to be controlled by the crane load itself spinning the hoist barrel with a grooved pulley being checked by a servo