Crane attachments for backhoe and tractor

A crane including an upright having upper and lower end portions, a boom including base and free end portions, pivot means pivotally supporting said base end portion from the upper end portion of said upright for oscillation relative thereto about a horizontal axis extending transversely of said upright and boom, motor means operably connected between said upright and base end portion for oscillating said boom relative to said upright, said boom base end portion being tubular and said free end portion of said boom including first and second ends, said first end being slidingly received within one end of said base end portion for extension and retraction of the second end of said boom free end portion relative thereto, a hydraulic cylinder operatively connected between said base and free end portions for effecting extension and retraction of the latter, said free end portion of said boom also being tubular, said hydraulic cylinder including a cylinder portion and a piston rod portion projecting outwardly of and extendible and retractable relative to one end of said cylinder portion, the free end of said piston rod portion being anchored relative to the other end of said base end portion of said boom and said one end of said cylinder portion including a mounting plate overlying and removably anchored relative to said first end of said boom free end portion, the second end of said boom free end portion including a horizontal internal cross member therein, the other end of said cylinder portion including an endwise outwardly opening bifurcated end embracingly engaged with said cross member.