Control of mechanical force or stress; Control of mechanical pressure

Control devices for adjusting the force in portable percussive tools Controlling ram pressure in presses Controlling tension in filamentary material Controlling tension in webs, tapes or filamentary material Control devices for rope, cable or chain tension in load moving winding or unwinding mechanisms Control of the tension in looms Automatically-controlled tensioning devices in sewing machines Means for regulating the pressure in paper-making machines Controlling the tension during drying fabrics Controlling the pressure of air or other gases for drying solid materials or objects Control of record carrier tension in information storage arrangements