US Patent 8104252 Multi-functional tool heads for lawn mowers and associated method

A combined reel lawn mower and multifunctional blade assembly includes a front attachment assembly removably conjoined to a body of the lawn mower. A shaft is removably interfitted within lateral sides of the body. A plurality of knobs may be affixed to the axially opposed end portions of the shaft. Each of the knobs may include a pair of spring-actuated fingers. A vertically adjusting mechanism may include a rectilinear bar countersunk within a recess formed at a bottom surface of the body. A pair of rollers may be journaled about axially opposed ends of the bar. A lever may be directly coupled to the bar. A rectilinear arm may be mated to the lever. The arm may further include a distal end removably interfitted within the aperture of the one knob for preventing and allowing rotational movement of the front attachment assembly when the lever is rotatably displaced.