Importance

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Abstract

An eccentric drive mechanism includes two shafts that are coupled to a wheel-like drive member such as a pulley, with one of the shafts being in offset relation to the other shaft and the central axis of the drive member. Each shaft represents inclined, flat wall portions in mutual inter-engagement, and the wall sections are releasably brought into a position of wedging contact with each other and to the drive member in order that the rotative position of one of the shafts is retained in a certain, predefined orientation relative to the rotative position of the other shaft and to the drive member. The drive member is supported on both sides to avoid imposition of cantilever-type loadings, and the mechanism can be readily disassembled and re-assembled when desired to realign and reposition the rotative orientation of the two shafts relative to the drive member. The eccentric shaft is coupled to a sway bar of the header for oscillation of the sickle.

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First Claim