Abstract: Gearing mechanism particularly for changing the relative angular position of two parts. A crown or ring gear with internal toothing is pressed from a sheet forming one arm, and a spur gear with external toothing is pressed from a sheet forming a second arm. The connection between the first arm and a hub of the crown gear and between the second arm and the spur gear is accomplished by bridges formed at tooth gaps of a width of at least of one pitch of the toothings. The mechanism can be used with collapsible seats of vehicles, for head rests, for the raising and lowering of windows, in textile machines, childs' vehicles, in furniture, agricultural machines, and the like.