Abstract: A narrow gauge, hydrostatic-drive tractor comprises an air-cooled prime mover, a Sundstrand hydraulic transmission mechanically coupled thereto, a fixed-displacement hydraulic motor hydraulically coupled to the Sundstrand transmission, an air conduit extending vertically upward from the fan housing of the prime mover for supplying ambient air to cool the prime mover, and cooling device disposed in the air conduit functioning to cool the hydraulic fluid. The motor is disposed beneath the fan housing and is coupled through a differential to drive wheels which, advantageously, have a diameter substantially the same as the width of the tractor. Advantageously, also, a manually-operated selector valve and a pressure-actuated cross-over relief valve is provided for by-passing the motor to protect the motor and to permit the tractor to be moved manually. There is also disclosed a scraping device for use with the above or like narrow gauge tractor.

Abstract: The specification describes a beet harvesting machine having apparatus for digging the beets and apparatus for elevating them either to a truck or to a holding tank in which the holding tank is provided with a horizontal conveyor for discharging the beets from the holding tank and with a downwardly and inwardly sloping front wall which terminates short of the horizontal conveyor and the bottom portion of which is hinged on a horizontal axis so that it can be swung to a vertical position to minimize the opening between the front wall and the horizontal conveyor or to a forward extended position to maximize the opening between the front wall and the horizontal conveyor.