Seed and fertilizer drill with spring loaded coulters counter-mo

Details Seed and fertilizer drill with spring loaded coulters counter-mo Seed and fertilizer drill with spring loaded coulters counter-mo

1978-03-16

1979-04-17

Burr, Edgar S.

Planting

Drilling

Frame and planting-element arrangement

111 85, 111 87, 172316, 172462, 172464, 172474, 172497, 172570, 172573, 172657, 172705, 172763, A01C 506, A01B 6332, A01B 3520, A01B 1518

Patent

active

041494750

ABSTRACT:
Seed drill has a row of coulters which are raised and lowered by a beam positioned above the coulters and connected to the coulters by spring assemblies. The beam is journalled for pivotal movement about its longitudinal axis and the spring assemblies are connected to the beam so that some exert reaction forces on the beam having clockwise moments about the beam's pivot axis, and others anticlockwise moments, whereby changes in loading of the coulters can be distributed between the coulters by angular movement of the beam about its pivot axis.

REFERENCES:
patent: 410436 (1889-09-01), Packham
patent: 520843 (1894-06-01), Carpenter
patent: 612721 (1898-10-01), Hafer
patent: 2713836 (1955-07-01), Ajero
patent: 3260315 (1966-07-01), Day
patent: 3494427 (1970-02-01), Greig et al.
patent: 3507233 (1970-04-01), Greig et al.

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