Furrow forming apparatus for a seed planter

Details Furrow forming apparatus for a seed planter Furrow forming apparatus for a seed planter

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.

REFERENCES:
patent: 1998730 (1935-04-01), Moore
patent: 2180253 (1939-11-01), Moore
patent: 2899776 (1959-08-01), Arnold
patent: 3023718 (1962-03-01), Sorensen et al.
patent: 3327648 (1967-06-01), Patch
patent: 3749035 (1973-07-01), Cayton et al.
patent: 4423788 (1984-01-01), Robinson et al.
patent: 4425857 (1984-01-01), Lienemann et al.
patent: 4461355 (1984-07-01), Peterson et al.

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