An apparatus for drawing ambidextro by coordinates (Machine-translation by Google Translate, not legally binding)

摘要

An apparatus for ambidextrous drawing by coordinates, of the class comprising a flat box framed by a frame in which there are two operating buttons, characterized in that it comprises a tracer device operatively arranged to have movement in two independent and perpendicular directions that correspond to each maneuver button; a receiving means for tracing in visible form constituted by a sheet of transparent material in which the receiving means is a light-colored fatty powder disposed inside the box in cooperation with a plurality of small balls which by rolling spread the powder over the back of the sheet in conditions of uniformity in order to accuse the trace produced by the tracer device; comprising a means of maneuver of this tracer device based on two twin developments of endless nylon threads that, passing through sets of pulleys each cover half the angular contour of the box, being in each set one of these pulleys linked to the respective maneuver buttons. (Machine-translation by Google Translate, not legally binding)