Adjustable ventilating louver

Claim 1

IN VENTILATING APPARATUS INCLUDING A FIRST FRAME CARRYING A PLURALITY OF PIVOTALLY MOUNTED LOUVER BLADES, A PLURALITY OF LOUVER BLADE PIVOT MEMBERS MOUNTING THE BLADES IN THE FRAME, EACH PIVOT MEMBER INCLUDING A PLATE, A PRIMARY MOUNTING PIN AND TWO SECONDARY MOUNTING PINS EXTENDING LATERALLY FROM ONE SIDE OF THE PLATE, AND FIRST AND SECOND AXLES EXTENDING LATERALLY FROM THE OTHER SIDE OF THE PLATE, A BOSS ON EACH LOUVER BLADE RECEIVING THE PRIMARY PIN WITH THE SECONDARY PINS BEARING AGAINST FRAME BLADE ON EACH SIDE OF THE BOSS, OPENINGS IN THE FIRST FRAME RECEIVING THE FIRST AXLES EXTENDING FROM THE PIVOT MEMBERS TO MOUNT THE LOUVER BLADES ROTATABLY IN THE FRAME AND AN ACTUATING BAR EXTENDING ALONG THE INSIDE OF THE FRAME PERPENDICULAR TO THE BLADES AND FORMED WITH OPENINGS TO RECEIVE THE SECOND AXLES OF THE PIVOT MEMBERS, WHEREBY THE LOUVER BLADES PIVOT TOGETHER.