In this paper, we analyze in detail the first Spanish winch used to drain water from mines. It is a privilege of invention designed by Bernave Dombon in 1850. In particular, three-dimensional modeling is performed using software parametric (Catia v5 R21) of each of the elements of the set. Also, after obtaining the 3D model, a static analysis using techniques of Computer-Aided Engineering has been performed, thanks to software of finite element analysis (Simulia Abaqus v6.14-1), based on the analysis of the von Mises stress and displacement. So, the highest stress concentrations occur in the drum shaft and the supporting structure, and that the highest concentration of displacements on the drum shaft too, but the rupture of the elements does not occur in any case, making it a set properly sized [ABSTRACT FROM AUTHOR]