Abstract: An improved drive shaft connecting device, including a novel shear bolt (50) for connecting two ends or flanges (42, 44) of the drive shaft connecting device in a manner whereby the separate parts of the drive shaft connecting device are securely connected to each other and are yet free to disconnect from each other and rotate relative to each other in the case of an overload condition on the drive shaft or drive shaft connecting device. The shear bolt is double ended (i.e. threaded on both ends) and shouldered on both ends. The threads on each end allow the two flanges of the drive shaft coupling device to be pulled together to a pre-determined distance, which, together with a shear point (60), is set by the distance between the opposing shoulders (52) on either side of the shear bolt As well, the flanges of the drive shaft coupling device are designed to accept the shear bolts in slotted openings (46, 48).

Abstract: A crop blower for a combine harvester. An elongated, tubular housing has a convex outer surface on a first side and a concave outer surface on a second side. There is a fan having a central shaft extending parallel to the housing and spaced-apart from the concave surface thereof. The fan has a plurality of groups of blades. Each group of blades has a plurality of spaced-apart blades which are generally parallel to the shaft and operatively connected thereto. There is a bearing support for the fan mounted on the housing near each end of the housing and between adjacent groups of blades. Each bearing support between adjacent groups of blades includes a U-shaped member extending about the convex surface of the housing. The shaft is rotatably mounted on the bearing supports. There is a motor for rotating the fan and a mount on each end of the housing for mounting the crop blower on a combine harvester.

Abstract: An implement has a transversely extending body and a mechanism for supporting the implement and for permitting transverse reciprocation of the body. The mechanism includes a plurality of spaced-apart support members connected to the body. Each of the support members is rigid in a direction which is vertical when the implement is positioned for use and is flexible in a transverse direction. The implement may be a harrow having tines extending downwardly from the body, the body having a plurality of hingedly connected sections so the harrow can be connected to, and folded with, a folding cultivator.