Abstract

A sprocket assembly comprises a first sprocket (54) which serves as a hub for a larger second sprocket. An annular extension member (70) is secured to the outer periphery of first sprocket (54) to prevent relative axial movement. The annular extension (70) comprises teeth (77, 81) on both an inner edge (76) and an outer edge (80). The inner set of teeth (77) may be rounded so as to mate and lock with the profile of teeth of the first sprocket (54). The outer set of teeth (81) provide the larger second sprocket and engage with a chain (56).

IPC Classes  ?

• A01D 41/12 - Details of combines
• F16H 55/30 - Chain wheels

Abstract

Rotary motion transfer apparatus (10), such as a combine grain elevator (12), comprises first and second endless flexible members (14,54) which may include belts and/or chains. Each flexible member (14,54) is trained around a respective set of rotary members which may be pulleys, sheaves or sprockets. One rotary member from each set shares a common shaft (18) and may, or may not, be in driving engagement with one another. The common shaft (18) is mounted on an adjustment frame member (28) that is linearly displaceable with respect to a main frame (46) to adjust the tension in the first endless flexible member (14). A pair of idler rotary members (58,60) are provided for tensioning the second endless flexible member (54) and are mounted on a pivot arm (62) which is mounted to the adjustment frame member (28) for pivoting movement around a pivot axis (64) intermediate the pair of idler rotary members (58,60). A lever (66) is secured to the pivot arm (62), and spring means (68) are attached between the lever (66) and the main frame (46) to bias the idler rotary members (58,60) into engagement with opposite sides of the second endless flexible member (54) with a substantially constant force over an adjustment range of the common shaft (18).

IPC Classes  ?

• A01F 12/56 - Driving mechanisms for the threshing parts
• A01D 34/76 - Driving mechanisms for the cutters
• A01D 41/12 - Details of combines
• B65G 23/44 - Belt- or chain-tensioning arrangements
• F16H 7/12 - Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley

Abstract

a) which resides on both sides of an extended plane defined by the associated finger element.

IPC Classes  ?

• A01F 12/00 - Parts or details of threshing apparatus
• A01F 7/02 - Threshing apparatus with rotating tools
• A01F 12/22 - Threshing cylinders with teeth

Abstract

A combine harvester (10) comprises threshing apparatus (17), a separating system (18) and a grain cleaning system (19). The threshing apparatus and separating system are arranged in series to sequentially receive and process a cut crop stream. Grain separated from the crop stream falls through respective concave grates (27, 32, 33, 44, 45, 46) in the threshing apparatus and separating system. The separating system (18) comprises a plurality of transverse separating rotors (41, 42, 43) which rotate in the same direction as one another. Each separating rotor comprises a plurality of retractable fingers (70) which retract into the rotor when at the top of the rotor and extend radially outward when at the bottom of the rotor so as to convey the crop stream under the rotors and eject crop residue from the rear of the separating system.

IPC Classes  ?

• A01F 12/30 - Straw separators
• A01F 12/39 - Straw separators with straw carriers in the form of rotors or drums

Abstract

A separating rotor (32) for a combine harvester (10) is provided having a rotor core (43) and a plurality of crop engaging elements (42). Each element (42) has a finger support (50) and a finger element (58) attached to the finger support. The finger support comprises a pair of feet (52, 54) connected together by a finger attachment plate (56) wherein the finger element is attached to the finger attachment plate. Each foot is secured to the rotor core along a respective base edge (52a, 54a) which resides on both sides of an extended plane defined by the associated finger element.

IPC Classes  ?

• A01F 12/22 - Threshing cylinders with teeth

Goods & Services

Machines and machine tools; motors and engines (other than for vehicles); transmission couplings and belts (other than for vehicles); agricultural and wine-making machines; large agricultural instruments; egg incubators. Land, air or water craft; house trailers.