LEVER MECHANISM OF A SPOOL-TYPE DIRECTIONAL VALVE

In the position of spool 2 shown, fluid under pressure is delivered from the pump to the power cylinder. Fluid from the exhaust end of the cylinder is drained through a groove of spool 2 to the tank. Braking of the machine tool table, linked to the piston of the power cylinder, is accomplished by cones 3 of spool 2, which throttle the fluid being drained to the tank. When lever 1 is turned about f…