Abstract: An adjustable bow lift apparatus for extending the overall height between the bed and bow cover on a cotton module truck during loading or unloading a cotton module, generally including a set of metal tubular frames, one for the top of each side wall, and pivotally attached a first distance from the further most end of each side wall. A set of actuators for each side of the frame for lifting and lowering the bow lift apparatus, each actuator is attached to the last side wall frame member of the truck, with the actuator extension arms pivotally attached at the lower frame on each side of the bow lift apparatus. A plurality of on board power devices may be adapted for rasing and lowering the adjustable bow lift apparatus during loading or unloading a cotton module, such as air, hydraulics or electrical.

Abstract: The back door of a cotton module builder is raised and lowered by a hydraulic cylinder extending from above the back door to a latch shaft extending across the back door. Movement of the hydraulic cylinder latches and unlatches latch bolts upon the latch shaft as well as raising and lowering the back door.