Rotary mower

Claim 1

A rotay mower comprising: a gasoline-driven rotary power source and a drive shaft extending downward therefrom; an elongated flat mowing blade attached to said shaft having a pair of oppositely tapering pointed prongs at each longitudinal end of said blade, one prong of each said pair of prongs tapering upward at an angle of 15° to 35° with respect to the plane of said mowing blade, and the other prong of each said pair of prongs tapering downward at an angle of 15° to 35° with respect to the plane of said mowing blade, each said prong extending outward beyond its respective said longitudinal end of said mowing blade, and said blade having a portion of its bottommost edge beveled; a housing having a top and side regions generally surrounding said mowing blade, said rotary power source being supported above said top of said housing approximately 1/8" to 1", and said housing having a first passageway therein underneath said power source, whereby a draft of air may move from under said engine downward through said passageway and under and out said housing around said mowing blade; a plurality of wheels positioned and attached to said housing for movement of said housing along the ground in a line of direction; a steering bar connected to said housing and extending away from said housing along a first direction along said line of direction; said housing having an opening in one side and a portion of the adjoining top of said housing, said opening being on a side of said housing opposite to that of said steering bar; a shield pivotally attached to said housing and configured to cover said opening; control means, including a control cable assembly having a cable having one end coupled to said shield and an opposite end of said control cable assembly supported by said steering bar, for selectively opening and closing said shield over said opening and for maintaining said shield in either said open or said closed position; and a portal in the top of said housing and an unobstructed circular tube extending around and up from said portal, said portal being located at a radial position with respect to said shaft corresponding to a radial position of said pointed prongs of said mowing blade.