Measuring device of the transverse profile of the head of a rail

Continuous on track measuring device of the transverse profile of the useful portion of the head of at least one rail of a railroad track comprising a bearing frame, guided by the rails, and pulled along them by means of a railroad vehicle to which it is connected through hinges permitting vertical and lateral displacements of said frame with respect to the vehicle, this bearing frame being provided with a plurality of feelers, cooperating with the surface of the head of the rail, displaced the ones with respect to the others transversely to the rail, characterized by the fact that the bearing frame comprises a guiding dihedral forming a rerefence base, the edge of which is parallel to the longitudinal axis of the rail, applied against the upper, portion of the rolling surface and against the lower portion of the internal face of the head of the rail;

• and by the fact that it comprises at least one hinging shaft parallel to the edge of the guiding dihedral on which are pivoted at least two mechanical feelers, measuring at least two different sidelines of the rail, provided with pin-point contact members intended to enter in contact with the rail in a measuring zone transverse to the surface of the head of the rail.