Mechanical draft (Machine-translation by Google Translate, not legally binding)

摘要

New mechanical weatherstrip, comprising two belts bent longitudinally and joined together by an axis of rotation, with a spiral spring on said axis forming two blades of a hinge, of which one is fixed and is attached to the bottom of the door and the other is mobile and holds a flexible plate that passes over it forming a skirt, characterized by having on the fixed blade an axle whose axis of rotation crosses the blade and is fixed on the door, so that placing the stone transverse to the blades of the hinge, forces the mobile blade to keep down, with the skirt of the flexible plate in contact and pressing the ground, closing the gap that separates said floor from the edge of the door, when it is in closed position, while turning the stone manually and placing it horizontally, the lower blade rises and separates the skirt of the flexible plate from the floor, allowing the opening of the door. (Machine-translation by Google Translate, not legally binding)