Abstract: Automatic control device for lifting-up and translating a carriage of a machine for edge trimming and beveling spectacles glasses, of the type wherein the shaft supporting the glass includes a cam acting on a switch so to as to control stopping of the glass rotating motion, and a motor driving the carriage with a translational motion by a cam, wherein it comprises first elements (16,17) allowing operation of the lifting-up mechanism, second elements (27) for guiding the lowering motion of the carriage (1) and third elements (22,23) constituting a mechanical storage for moving the carriage (1) on one hand along a curved path during lifting-up and lowering, corresponding to the mean curvature of the glass, and on the other hand with a simultaneous additional translational movement.