Abstract: In a chain saw having a sprocket (11), which is supported in rotary fashion in a housing (10) and is for a saw chain (12) guided on a guide (13), and having a chain tension device (14) for longitudinally moving the blade (13), which device has a cam (15) that moves the guide (13) and a rotating member (17) for rotating the cam (15), in order to preset a chain tension that is optimal for operation and is independent of the user, the rotary connection between the rotating member (17) and cam (15) is embodied as a detent overload clutch (18), whose detent overload force is set in accordance with the required chain tension (FIG. 2).

Abstract: A chopper has a rotatable cutting tool provided with a plurality of cutting teeth, a stopping body having a surface which faces the cutting teeth and guides the chopping product. The surface extends substantially in an axial direction of the cutting teeth and is arranged at a distance from the cutting teeth. The cutting teeth during a cutting process are in operative connection with the chopping product. A rotatably supported pressing roller which is arranged in a distance-free manner relative to the cutting tool and forms a gap between the pressing roller and the cutting tool, while the stopping body having a working side which extends in the gap between the pressing roller and the cutting tool.