Abstract: Blade structures useful particularly for mowing vegetation, the several embodiments of the present invention are useful with rotary lawn mowers and weed trimmers intended for mowing lawns and other vegetation with a maximum degree of cutting effectiveness and user safety. The present structures are preferably mounted to the drive shaft of a mower or trimmer in the place of a conventionally used cutting structure, usually without the need for modification of the mower or trimmer. Generally, the present structures include a plate member which acts to bend at least upper portions of vegetation downwardly to allow a cutting bar carried by the plate member to strike the vegetation at or below the bent portions to facilitate clean and rapid cutting of the vegetation.

Abstract: A safety attachment is provided for use with a rotary lawn mower to prevent substantial injury to anyone whose extremity may accidentally strike the cutter. The attachment includes a relatively large annular disc mounted to the drive shaft of the motor for rotation about a vertical axis and at least one cutter bar mounted diametrically across the disc on the underside thereof. The disc diameter is substantially equal to the length of the cutter bar. In one embodiment slots are provided adjacent to the leading edges of the cutter bar and impellers are provided on the upper side of the disc adjacent the slot fordischarging cut grass through the side of the machine. The combination of the disc and the cutter bar provides good grass cutting action and at the same time greatly reduces the risk of serious injury in the event that one's foot, for example, accidentally slips in under the mower.

Abstract: A safety attachment is provided for use with a rotary lawn mower to prevent substantial injury to anyone whose extremity may accidentally strike the cutter. The attachment includes a relatively large annular disc mounted to the drive shaft of the motor for rotation about a vertical axis and at least one cutter bar mounted diametrically across the disc on the underside thereof. The disc diameter is substantially equal to the length of the cutter bar. In one embodiment slots are provided adjacent to the leading edges of the cutter bar and impellers are provided on the upper side of the disc adjacent the slot for discharging cut grass through the side of the machine. The combination of the disc and the cutter bar provides good grass cutting action and at the same time greatly reduces the risk of serious injury in the event that one's foot, for example, accidentally slips in under the mower.