A roof train mounted pantograph is a mechanical system used to collect the electric energy supplied by the overhead contact line, also known as catenary, to power the electric engines of the train. The important design goals of the pantograph include: the upper part of the pantograph, i.e., the head in which the registration strips are mounted, is always leveled with the roof of the train where the pantograph is mounted; the head is raised as close as possible along a line perpendicular to the train roof, and; the head suspended mass is minimized. The design of head leveling mechanism of the pantograph is presented in this work. The pantograph model is developed using a Cartesian coordinate formulation for the rigid bodies components of the system and a point-following kinematic joint is developed to represent the guidance of a point of a body along a generalized curve defined in another body.