Resonant sickle drive with spring means at opposite ends of...

Details Resonant sickle drive with spring means at opposite ends of... Resonant sickle drive with spring means at opposite ends of...

A - Human Necessities

01

D

56/141

A01D 34/30 (2006.01)

Patent

CA 1156056

RESONANT SICKLE DRIVE WITH SPRING MEANS AT OPPOSITE ENDS OF THE SICKLE ABSTRACT OF THE DISCLOSURE In order to provide a higher cutting speed for a high speed harvester (11) torsion bars (31, 68) are connected to opposite ends of a crop cutting sickle (28). A pair of levers (46, 62) which connect the torsion bars (31, 68) to the sickle (28) carry a pair of removable counterweights (56, 96) which can be sized to change the resonant frequency to substantially correspond to the desired cutting speed. The levers (46, 62) may be interconnected by an adjustable tie bar (111) for hard to cut crops which is of sufficient mass to replace the counterweights; or, counterweights (156, 196) may be added to adjust the resonant frequency and hence the resonant cutting speed.

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