Abstract: An axial flow combine harvester comprises a rotor having a separator section which can be adapted to suit different crops. Within the separator section staggered crop engaging elements are spaced from one another along a first helical crop flow path. The crop flow path can be modified to suit crops such as corn and sunflowers by attaching at least one separator blade to the rotor in place of or in addition to selected crop engaging elements of the rotor. The separator blade forms a continuous crop engaging surface defining a second helical crop flow path of greater pitch than the first path defined by the staggered strop engaging elements.

Abstract: An axial flow combine harvester is described which comprises a rotor having a thresher section and a separator section. The thresher section includes pairs of rasp bars, which are staggered from one another along a helical path. Individual rasp bars of the pairs of rasp bars are located adjacent to the separator section of the rotor. The individual rasp bars are removable to render the action of the thresher section less aggressive. To reduce the risk of plugging when a trailing rasp bar is removed, a flow deflector plate is mountable in place of the removable rasp bars so as to guide the crop flow continuously from the remaining rasp bar to the infeed end of the separator section of the rotor.

Abstract: An axial flow combine harvester is described which comprises a rotor having a thresher section and a separator section. The thresher section includes pairs of rasp bars, which are staggered from one another along a helical path. Individual rasp bars of the pairs of rasp bars are located adjacent to the separator section of the rotor. The individual rasp bars are removable to render the action of the thresher section less aggressive. To reduce the risk of plugging when a trailing rasp bar is removed, a flow deflector plate is mountable in place of the removable rasp bars so as to guide the crop flow continuously from the remaining rasp bar to the infeed end of the separator section of the rotor.

Abstract: The disclosure relates to a concave latch mechanism for an agricultural combine. The invention consists of concave surrounding a rotor. The concave has a concave pin and an adjust pin. The adjust pin is inserted into a support slot located in the frame. The concave pin is inserted into a handle also located on the frame. The handle has a lever which orients a curved cradle plate which supports the concave pin. When the lever is released, the cradle plate correctly orients the concave pin with the handle. The concave pin enters the cradle plate through an aperture. The aperture can have a sloped lead-in which assists in the positioning of the concave pin. The handle can also have an isolation mount between a portion of the handle and the frame. This isolation mount helps minimize vibrational noise from the rotor.