Protecting Means Preventing Overwinding (arranged In, Or Attached To, The Barrel Subclass 16; In Connection With Keys Or The Like Subclass 36; In Connection With Parts Of The Cases Subclass 38; Support Of The Moving Weight Subclass 53; Protection Means Subclass 71; Electrical Driving Means For Mechanical Clockworks Subclass 443) [g04b 5/24] Patents (Class 968/66)