Armada escayola cajon with sparto. (Machine-translation by Google Translate, not legally binding)

摘要

Plaster box armed with esparto characterized by composing itself giving two quadrangular hollow prismatic pieces and practically equal, one as a base and the other as a lid, which are internally reinforced with an orthogonal crossing of wider ribs on the lid; the songs of reciprocal support of both pieces present in the middle region of each side where the nervation cites end, a recess in those of the base and a projection in those of the cover; the base has externally in all its lower edge a quadrangular flat frame and on its four external lateral faces a recesses destined to receive an external element of immobilization. (Machine-translation by Google Translate, not legally binding)