Didactic skill game. (Machine-translation by Google Translate, not legally binding)

摘要

Game of didactic ability, characterized by presenting a frame of quadrangular general shape that on two of its sides or adjacent walls can slide without looseness sliding paths solidarity to two forks of parallel and coplanar branches, which by their free ends rest on the other days opposite sides or walls, in such a way that when crossed perpendicularly, one on the other, they frame a small square space that will change position as they move, at the same time or separately, the said forks when moving in one direction or another the sliding, because the frame has a full base occupied, in most of its surface, by a series of through holes placed capriciously and irregularly so that between them there is a solid space with no defined shape, provided that the set can be add electrical or mechanical devices for the edification of errors and groping, well luminous, acoustic or both both. (Machine-translation by Google Translate, not legally binding)