Device for adjusting folding jaws

A device for adjusting a clamping gap in a folding jaw system of a printing press, said device comprising:

• a folding jaw cylinder, said folding jaw cylinder being rotatable about an axis of rotation;
• at least one pair of folding jaws carried on said folding jaw cylinder;
• a roller carried by said at least one pair of folding jaws, said roller opening and closing its associated pair of folding jaws on said folding jaw cylinder during rotation of said folding jaw cylinder about its axis of rotation;
• a control cam having a cone shape defining a control cam track with a continuous surface, said control cam track surface having an axial width with said control cam track surface being inclined over said axial width in a direction of said axis of rotation of said folding jaw cylinder, said control cam track surface further having rises and depressions, said roller riding on said control cam track surface to generate movement of said roller for opening and closing its associated pair of said folding jaws on said folding jaw cylinder;
• and
• means for axially displacing said control cam and said roller with respect to each other in said direction of said axis of rotation of said folding jaw cylinder during operation of the printing press, said axial displacement of said control cam and said roller with respect to each other in said direction of said axis of rotation of said folding jaw cylinder changing an amount of said movement of said roller to adjust the clamping gap between said at least one pair of folding jaws whereby the clamping gap can be infinitely adjusted due to said cone shaped control cam track surface.