Tensioning and attachment means for display stands and similar devices

Claim 1

A tensioning and attachment device, to co-operate with a tube or a bar having a substantially circular section, comprising a bracket carried displaceably on the tube or the bar, and a tensioning arm pivotally mounted to said bracket, said arm including a handle portion and an abutment portion, said abutment portion having two laterally spaced legs at a spacing which substantially corresponds to the diameter of the tube or bar the pivotal journalling point of the arm on the bracket being selected such that said legs, upon swinging of the tensioning arm from an idle to an operative position, engage the outer surface of the tube or bar with a successively increasing force and said swinging movement, due to a grip obtained between the abutment portion and the tube, causing displacement of the bracket along the tube or the bar and resulting in an increasingly stronger grip between the tensioning arm and the bar or tube.