Hydraulic loader coupled to trucks and agricultural tractors, which essentially is characterized by that is constituted from a support frame, equipped with means for its attachment to the point of work of interest, whose frame has articulated a lever, which by gravity and presenting its pivot point at one end, tends to be placed vertically, with the particularity that the aforementioned lever bears articulated to a normal gusset at a mid point of its extension, to the end of the piston of a horizontally placed oil-hydraulic cylinder, which articulates to the frame and that at its end is articulated the arm of a shovel for the load, which incorporates an extensible tension against the tension of a spring, which relates it articulately to the lever, at the end of which plays, and is provided with two stops acting against the lever itself, which are set to more than 90 degrees between each other and act, through two plates articulated, linked to one of them, a valve that closes the return of the oil that the truck or tractor pump is constantly sending to the aforementioned oil hydraulic cylinder. (Machine-translation by Google Translate, not legally binding)
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