Lawn care device

A device for lawn care for use in connection with a lawn mower having a vertically-extending motor drive shaft, comprising:

• at least one generally horizontally-disposed support beam having a vertical axis of rotation which may be coupled to said shaft for rotation therewith, said support beam including mounting means for pivotably mounting work tools thereon so that said work tools may be pivoted between an operative position, which position of the tool is caused by the centrifugal forces resulting from the rotation of said support beam, and a non-operative position, which position of the tool is caused by the tool engaging an obstruction;
• at least one working tool pivotably mounted on said support beam by means of said mounting means, said tool being pivotably mounted such that movement thereof from said operative to said non-operative position occurs in a direction generally opposite to the rotational direction of said support beam and so that upon engaging an obstacle said tool yields rearwardly relative to the rotating support beam by overcoming the centrifugal force acting thereon and upon passing the obstacle is returned to said operative position by the centrifugal force acting thereon;
• and
• a centrifugal force guidance device coupled to said tool for effecting pivotable movement of said tool to said operative position thereof upon rotation of said support beam, said centrifugal force guidance device comprising a centrifugal weight which is coupled between said support beam and said tool by connecting means and which, upon rotation of said support beam, is movable radially outwardly from the axis of rotation of said support beam toward an end of said support beam under the influence of the centrifugal force acting thereon so as to urge said tool into said operative position thereof.