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Priority to ES0078410UpriorityCriticalpatent/ES78410Y/en
Publication of ES78410UpublicationCriticalpatent/ES78410U/en
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Publication of ES78410YpublicationCriticalpatent/ES78410Y/en
Improved rovings, characterized by being constituted by a metal plate capsule, generally cylindrical or prismatic in shape, opened by a base and forming next to it an orthogonal flange or rim constituting the outer head of the rivet, the side walls of which capsule have a series of longitudinal ribs or radial folds towards the interior, of increasing section towards the inner end of the ridge, arranged so that, once conveniently placed the latter, it is sufficient to introduce a punch of suitable section inside the capsule and pressing axially, to cause the deformation of the assembly, determining the constitution of the second head of the rivet. (Machine-translation by Google Translate, not legally binding)
PROCEDURE AND APPARATUS FOR FORMING, IN A ME-TALIC BOAT BODY, A PERIPHERAL END FLANGE AROUND AN OPEN END OF SAID BODY AND A PORTION OF NECK COMBINING WITH SAID FLANGE.