Mechanism for the subjection and movement of the graphite mine in the hidden mine pens. (Machine-translation by Google Translate, not legally binding)

摘要

A mechanism for the subjection and movement of the graphite mine in the concealed mine pens, essentially characterized by being formed by a cone that forms the tip of the pencil with a longitudinal hole for the passage of the graphite mine; a small tube, direction of rotation that is of the pen. (Machine-translation by Google Translate, not legally binding)