Clamping rod for the suspension of material in the form of sheets or the like

Claim 1

A clamping rod for the suspension of sheet material, for instance, signs, which clamping rod comprises two substantially rigid flanges which are mutually parallel or convergent and whose edges define a gap into which said sheet material is insertable, characterized by a V-formed leaf spring which is clamped between said flanges so that a first leg of said spring abuts in said gap against a first one of said rigid flanges along a contact line adjacent the bending line between the two legs of said spring, and so that the outer edge of the other leg thereof presses against the other rigid flange at a distance inside of said gap, the edge of the flanges opposite to those defining said gap being rigidly interconnected by means of a web, whereby said first flange converges relatively to said other flange which is perpendicular to said web, said web between and parallel to said flanges being provided with a ridge-like projection, and the outer end portion of said first leg of said leaf spring being angle bent relatively to said first leg in a direction away from said other spring leg, the outer edge of said outer end portion resting in the apex of the angle between said web and said first flange and one edge of said projection engaging the side of said first spring leg, facing away from the cooperating flange, intermediate the bending lines between said spring legs and between said first spring leg and said end portion, respectively.