| 摘要 |
A pair of generally flat, horizontally disposed mowing rotors at the front of the machine sever the standing crops as the machine is advanced and, by creation of an air stream as well as through a physical throwing force, the rotors propel the severed crops rearwardly through a centrally disposed passage to a conditioning zone adjacent the rear of the machine where such severed crops are treated by the conditioner to expedite curing of the crops when they are thereafter directed onto the ground in a swath or windrow. Each of the rotors is comprised of a series of radially outwardly projecting, discrete and circumferentially spaced apart fins that support cutting blades at their outermost tips, and to protect the fins against structural damage caused by accidental impact with stumps and other obstacles in the field, each rotor is provided with a generally circular shield that underlies the rotor and is slightly larger in diameter than the corresponding rotor, the blades, however, projecting outwardly beyond the peripheral edges of the shields. Ground skids located beneath the shields support the rotors during operation and may be vertically adjusted such as to regulate the cutting height of the rotors.
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