Detachable harvesting unit

An agricultural machine comprising a main frame, power means, a front axle, a rear axle, said front and rear axles located below said main frame, at least one working device, at least four attachment positions on said main frame for the reception therein of said at least one working device, means for detachably mounting said at least one working device in at least one of said four attachment positions, said at least four attachment positions comprising a first position located in front of said front axle, a second attachment position located behind said rear axle, a third attachment position located between said rear axle and said front axle and below said main frame, and a fourth attachment position located behind said front axle and above said main frame, two front wheels spaced laterally apart on said front axle and two rear wheels spaced laterally apart on said rear axle, at least one front take-off shaft connected to and driven by said power means, at least one rear take-off shaft connected to and driven by said power means, and at least one lateral take-off shaft located between said front take-off shaft and said rear take-off shaft, said at least one working device having a width at least equal to the lateral spacing between said front wheels and between said rear wheels, and means including power elevators for operating said at least one working device, said means for detachably mounting comprising an apparatus frame mounted on said main frame with the rear end of said apparatus frame located rearwardly from said main frame and the front end thereof located in said fourth attachment position rearwardly of and adjacent to said front axle, said machine comprises four said working devices said four working devices being supported from said apparatus frame as a unit so that said four working devices can be detached from said main frame, said four working devices comprises a harvesting means mounted in said first attachment position, a vertical conveyor bucket chain mounted at the rear end of said main frame in said second attachment position, a container member comprising at least one bunker mounted in said fourth attachment position, an oscillating frame dependently and vertically adjustably supported in said third attachment position from said apparatus frame and extending therefrom into said first attachment position where said oscillating frame is attached to said harvesting means and means mounted in said third attachment position and supported from said oscillating frame for connecting said harvesting means and said conveyor bucket chain whereby the harvesting, cleaning, separating, screening, conveying and collecting of a crop, such as potatoes, can be achieved.