Multistage forward and reverse gearing - is changeable under load with three coaxial gears with two clutches between

摘要

The speed change gearing has a like number of forward and reverse stages changeable under load. Each of three shafts has a pair of selectively operable clutches having respective input members and a common output member. Gears are secured to the respective clutch members of the first shaft mesh, through intermediate gears, with further gears secured to the respective clutch members of the second shaft. These latter gears mesh directly with gears secured to the clutches of the third shaft. One of the intermediate gears is secured to an input shaft. One of the gears on the third shaft drives an output shaft.