<Li> Bed knife--the stationary cutting mechanism of a cylinder / reel mower . This is a fixed horizontal blade that is mounted to the frame of the mower . </Li> <Li> Body frame--the main structural frame of the mower onto which the other parts of the mower are mounted . </Li> <Li> Wheels--help propel the mower in action . Generally, reel mowers have two wheels . </Li> <Li> Push handle--the "power source" of a manually operated reel mower . This is a sturdy T - shaped, rectangular, or trapezoidal handle that is connected to the frame, wheels and blade chamber . </Li>

When was the first electric lawn mower invented