Disk harrow with individually spring-mounted disks

Details Disk harrow with individually spring-mounted disks Disk harrow with individually spring-mounted disks

1981-08-27

1984-06-05

Johnson, Richard J.

Earth working

Rolling, rotating or orbitally moving tool

With spring means other than for detent

172574, 172711, 172709, A01B 6104

Patent

active

044523190

ABSTRACT:
A disk harrow has a frame adapted to be pulled along the ground in a normal travel direction and having at least one frame member, a mount on this frame adapted to secure same to a three-point tractor hitch, and a plurality of disk assemblies. Each of these disk assemblies in turn includes an inner pivot part fixed on the frame and forming lower, middle, and upper horizontal axes transverse to said direction, an outer pivot part spaced in the normal travel direction from the inner part and having respective lower, middle, and upper horizontal axes transverse to the travel direction. Respective rigid lower and middle links are pivoted on the parts between the respective lower and middle axes with the middle link shorter than the lower link. An upper leaf spring is pivoted on the parts between the upper axes, and a harrow disk is rotatable about a harrow axis transverse to the travel direction on the outer pivot part below the respective axes.

REFERENCES:
patent: 434100 (1890-08-01), Thramer
patent: 1225853 (1917-05-01), Pidgeon
patent: 2352963 (1944-07-01), McMahon
patent: 3486566 (1969-12-01), Nja
patent: 3627061 (1971-12-01), Sample
patent: 3967685 (1976-07-01), Siekmeir
patent: 4128130 (1978-12-01), Green
Kverneland Moldboard plows, Advertizing Brochure of Kverneland Norway, 9/1979.

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