Abstract: The invention relates to a lawn mower driven by at least one permanently excited d.c. motor that is supplied with power from a battery on the lawn mower. In order to prevent the lawn mower from being restricted to one surface during mowing and make it easily adaptable to various surfaces and easy to handle, the battery can be quickly and easily electrically disconnected from the lawn mower, removed, and replaced by the operator.

Abstract: A ground-working machine is proposed for hoeing, tilling or similar, with two motor-driven, rotating power take-off shafts, mounted crosswise to the direction of travel. The power take-off shafts carry the tools. In order to ensure a high performance, the bearing points of the power take-off shafts are laterally offset from each other in the direction of travel. In a further model of execution, the power take-off shafts each sit in a transmission block, which transmission block is coupled to the motor. To change the distance between both power take-off shafts in the direction of travel, the transmission blocks can swivel in relation to each other.