involving fluid governors of flow-controller type, i.e. the width of liquid flow being controlled by fly-weights

Full Title

Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover > with auxiliary non-electric power > using regulating devices with proportional band, i.e. P regulating devices > involving fluid governors of flow-controller type, i.e. the width of liquid flow being controlled by fly-weights