Loom of subjection of mechanisms of books of residual leaves. (Machine-translation by Google Translate, not legally binding)

摘要

Loin for fastening mechanisms of changeable sheets, characterized by being made up of a prefabricated element made of flexible material, of which and from the same material emanate from the center two pins for fastening the metal fitting comprising the rings and laterally on both sides a plurality of them in symmetrical pairing for the insertion of the covers in which previously holes are provided for, the introduction of those and completing with the rivet on the face, inside, so that the lids are fastened without being perceived this rivet that apparently is a circular drawing. (Machine-translation by Google Translate, not legally binding)