a bearing 19 supporting the drive shaft facing end of connecting shaft 15 the drive shaft 14 is axially telescopic and provides means 50 for permitting limited angular movement between the engine 1 and the housing 4 in the plane of the elastomeric intermediate layer 3 as already mentioned above an elastomeric intermediate layer is arranged between the clutch housing 2 and the transmission housing 4 by means of the elastomeric layer a sound propagation from the internal combustion engine and the clutch housing respectively to the transmission housing 4 is prevented as shown in detail in fig3 the elastomeric intermediate layer 3 is arranged between a flange 23 provided on the clutch housing 2 and a flange 24 provided on the transmission housing 4 according to the embodiment shown in fig1 through 3 the flanges 23 and 24 are respectively bolted in a detachable manner by means of bolts 25 and 26 to the clutch housing 2 and to the transmission housing 4 between the flange 23 provided on the clutch housing 2 and the flange 24 provided on the transmission housing 4 a dampening element is arranged which is designed in form of a flat rubber ring 27 having an outer periphery approximately equal with that of the flanges 23 and 24.