Undercarriage trailer for handling and transporting elongated bodies

Claim 1

A trailer for manipulating and transporting elongated bodies, comprising a trailer having a longitudinally extending chassis; a pair of support members longitudinally spaced apart on said chassis for supporting a load of elongated bodies; pressure-shoe means on said chassis between said support members and operable to support said chassis against the ground during loading and unloading of the trailer; and a hydraulically operable crane mounted on said chassis between said support members, said crane comprising a carriage pivotally mounted to said chassis for movement about a vertical axis, a first curved arm swingAbly mounted on said carriage and having an operating position wherein said arm overhangs at least a portion of the load carried by said support members, a second curved arm articulated on said first curved arm and having a position wherein said load is girded by said arms when said arms lie generally transversely of said chassis, respective hydraulic cylinders for swinging said second arm relative to said first arm and said first arm relative to said carriage for loading said bodies on and unloading said bodies from said support members on said chassis, said chassis and said pivotal mounting for said carriage being disposed below said load when the load is carried by said support members, and a load-engaging hook mounted at a free end of said second arm and a hitch carried by said hook and engageable with said bodies, said trailer being drawn by a tractor having a pump connected with a gear box of the tractor, further comprising a distributor connected between said pump and said hydraulic cylinders.