No till seed drill

Details No till seed drill No till seed drill

1975-04-28

1977-08-30

Bagwill, Robert E.

Planting

Drilling

Frame and planting-element arrangement

111 88, 111 73, 172 9, 172464, A01C 508, A01B 6300

Patent

active

040446972

ABSTRACT:
A seed drill for a field left in stubble, comprising a plurality of pairs of discs wherein each pair includes a forward coulter disc tangentially engaging a rearward furrow opening disc held by clevis members to a wheel supported framework. Seeds are directed between the disc pairs to fall therebetween to a point of convergence between the two discs. Forward rotation of the discs cause the seeds to be separated and evenly spaced apart as the seed drill is moved along a forward path of travel. A hydraulic system is provided wherein the pairs of discs are forced downwardy by ram cylinders connected between each clevis member and the framework. The ram cylinders are connected in a parallel hudraulic circuit to a pressure supply source so an even amount of downward pressure is applied to each of the disc pairs.

REFERENCES:
patent: 745655 (1903-12-01), Packham
patent: 1104725 (1914-07-01), Aspinwall
patent: 1808759 (1931-06-01), Bickerton
patent: 2155443 (1939-04-01), Parks et al.
patent: 2605686 (1952-08-01), Starr
patent: 3507233 (1970-04-01), Greig et al.
patent: 3513790 (1970-05-01), Olsson

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