Abstract: The invention provides a power transmission apparatus especially for automobiles. It consists of a fluid torque converter coupled with gearing. The gearing includes a first gearing connecting the circulatory turbine to the input shaft and a second gearing connecting the first gearing to the output shaft and to a stationary part. Two unidirectional detents are provided, the first of which acts between the second gearing and a stationary part and the second of which acts between the torque converter reactor and the second gearing. The two detents are in series. Forwards rotation of part of the second gearing drives the reactor in a forwards direction and negative torque on the reactor or said part of the second gearing can act on said stationary part.

Abstract: This invention concerns a power transmission gearing having friction devices i.e. clutches and/or brakes for holding and freeing parts of the gearing for changing the driving ratio, said devices having axially engageable friction surfaces which are urged in opposite directions by resilient means so that some engaging load can be applied or released and co-operating surfaces having a cam action are connected with the respective friction surfaces and so arranged that the torque load transmitted by the friction surfaces acts to produce an additional load in the axial direction which presses the friction surfaces together.

Abstract: The invention provides a load moving device, especially a ship's winch in which the driving ratio is varied infinitely in accordance with the varying load, the device including a pair of eccentrics one surrounding the other to provide a combined variable throw, these eccentrics being normally held against a spring in maximum throw relative positions, and means (e.g. spring urged rollers) being provided to restrain the outer eccentric to a degree depending on the load so as to cause relative rotation of the eccentrics thereby varying the driving ratio.