view of a combine having a crop harvesting header attached thereto can be seen any left and right references are used as a matter of convenience and are determined by standing at the rear of the machine facing the forward end the direction of travel the combine base unit 10 is of generally conventional construction with a main frame 11 having ground engaging wheels 12 to mobilely support the combine 10 over the ground g as is best seen in fig1 and 2 the combine 10 is provided with a feederhouse 15 projecting forwardly therefrom to deliver crop material thereto as is described in greater detail in u s pat no 4 253 295 granted to larimer j knepper on mar 3 1981 the description of which is incorporated herein by reference the feederhouse 15 is provided with a cradle assembly 17 to pivotally support the crop harvesting header 20 in a forwardly extending crop engaging position to initiate the crop harvesting process the drawings depict a flexible crop harvesting header which is described in greater detail in u s pat no 4 414 793 granted to l m halls on nov 15 1983 the description of which is incorporated herein by reference including a transversely extending cutterbar 22 a reel 23 to engage the standing crop.