ADJUSTOR MECHANISM FOR ENDLESS CHAIN OR BELT MECHANISMS

摘要

1,203,849. Tensioning endless tracks. CLARK EQUIPMENT CO. 10 Oct., 1968 [18 Oct., 1967], No.47989/68. Heading B7H. [Also in Divisions B8 and F2] The tension in the endless track of a vehicle is adjusted by means of a piston and cylinder 60, the piston abutting a frame member 55 having an aperture 56 to receive the shaft of one sprocket or pulley and the cylinder 60 being fixed by a pin 80 in a tubular frame member 34 supporting the other sprocket or pulley. To extend the piston, fluid is fed through a Zerk fitting 70, and a nut and bolt 76, 78 is then tightened to hold the frame members 34, 55 in their new relative position. The pressure in cylinder 60 may then be relieved by a screw 72 in the cylinder.