Planting – Drilling – Frame and planting-element arrangement
Patent
1986-10-24
1988-05-17
Feyrer, James R.
Planting
Drilling
Frame and planting-element arrangement
111 87, 1726245, 292175, A01C 506
Patent
active
047443162
ABSTRACT:
An adjustable down pressure mechanism is disclosed for use in association with a furrow forming apparatus of a seed planter. A parallel linkage arrangement is provided for mounting the apparatus on a tool bar of a tractor or the like, whereby the apparatus can follow the contour of the ground for efficient and consistent furrow formation. The down pressure mechanism comprises one or more springs operatively extending between upper and lower links of the parallel linkage. An upper support member for the springs is configured for convenient adjustable positioning along the upper links, whereby the pressure exerted by the springs on the furrow forming apparatus can be readily varied.
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Ledermann Donald L.
Lienemann Darlo E.
Wunschl Nicholas H.
Feyrer James R.
J. I. Case Company
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