Abstract: A mower housing having a plurality of chambers (11 and 12) so proportioned in capacity, and cutting blades (13 and 14) therein, so proportioned in capacity that one chamber and blade can handle and advance the grass clippings blown with air from the other chamber and blade as well as the grass clippings blown with air produced in that one chamber. The housing having means (25) for controlling and directing the flow of grass cuttings discharged from the housing and means (26) for collecting in increments in the form of tufts or bunches and the ejecting of such increments by the mower blade.