initiated by means of brake-bands or brake-shoes

Full Title

Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes (similar clutches F16D13/38) > with axially-movable discs or pads pressed against axially-located rotating members > by moving discs or pads away from one another against radial walls of drums or cylinders > with self-tightening action, e.g. by means of coacting helical surfaces or balls and inclined surfaces > initiated by means of brake-bands or brake-shoes