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Rotary lawn mower with removable mulching attachment

  • US 4,189,903 A
  • Filed: 06/23/1978
  • Issued: 02/26/1980
  • Est. Priority Date: 06/23/1978
  • Status: Expired due to Term
First Claim
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1. A rotary lawn mower comprising,a housing including a top wall and a downwardly depending sidewall, and having a discharge chute opening formed in its peripheral portion,wheel means supporting the housing for movement over a support surface,a rotary blade supported for rotation in a plane generally parallel to the supporting surface and spaced below the top wall of the housing, the rotary blade including an airfoil portion for creating a flow of air upwardly and around the inner peripheral portion of the housing from beneath the plane of the blade for lifting the grass to be cut and for conveying the clippings around the housing and outwardly through the discharge chute opening,drive means for driving said rotary blade,an annular mulching liner mounted within the housing, said mulching liner including an upwardly extending, substantially circular skirt portion extending in contiguous relation with the inner surface of said sidewall within said housing throughout at least a substantial portion of its circumference, and a top panel extending inwardly from the top of said skirt beneath said top wall and above the path of said rotary blade, said top panel having a central opening extending therethrough,said drive means including a generally vertical shaft extending downwardly through said housing and said central opening and supporting said rotary blade for rotation in said plane, andattaching means for releasably retaining said mulching liner within said housing with said liner extending over and effectively blocking said discharge chute opening to permit operating the mower as a mulching mower,said attaching means being releasable to permit removal of said mulching liner to enable lawn clippings to be discharged through said chute opening,and wherein said multing liner has guide means for directing clippings inwardly toward said central opening.

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