Hydro-Kinetic Power Transmitter*

THE problem of devising a hydro-kinetic power transmitter capable of performing effectively the functions both of a clutch and of a change speed gear has not infrequently been declared to be incapable of solution. Tests of a transmitter evolved by Commendatore Piero Salerni indicate that the problem has now been satisfactorily solved. Within the range of variation of torque ratio requisite in an automobile or a heavy lorry, the transmitter in question performs the two functions effectively and has an advantage over the orthodox clutch and gear mechanism in efficiency, performance, simplicity, soundness of construction, and also cost. Furthermore, due to its inherent smoothness, it relieves the whole of the transmission system, from engine to road wheels, of shock loads, and thus reduces general maintenance.