Hydraulic control arrangement

A hydraulic control arrangement comprising a first hydraulic ram, a second hydraulic ram, and an hydraulic control circuit connected with the first and second hydraulic rams, each of the hydraulic rams having a cylinder, a piston reciprocable within the cylinder, and a hollow piston rod fixed to the piston, and each of the hydraulic rams having a cylindrical working chamber and an annular working chamber positioned on opposite sides of its piston, wherein the hollow piston rod of each hydraulic ram defines a cylinder of a respective metering ram, a respective metering piston being reciprocable within the cylinder of each metering ram to define a metering chamber therewithin, wherein the hydraulic control circuit includes a line, which interconnects the two metering chambers, and a normally closed hydraulic valve positioned in a hydraulic fluid supply line leading to one of the working chambers of the second hydraulic ram, said normally closed hydraulic valve comprising a valve seat and a valve closure member normally seated on the valve seat and closing said valve, and wherein an actuator is coupled to the metering piston of the second hydraulic ram for movement therewith, said actuator being engageable with the closure member of the normally closed hydraulic valve to lift said closure member off said valve seat and open said valve in response to movement of the metering piston of the second hydraulic ram, thereby controlling the flow of hydraulic fluid to said one working chamber of said second hydraulic ram.