Planting – Drilling – Drag-bar units
Patent
1988-10-20
1989-08-29
DeMille, Danton D.
Planting
Drilling
Drag-bar units
111151, 111926, 172711, A01C 506
Patent
active
048606723
ABSTRACT:
A seed drill including depending furrow openers having a lower shovel and a supporting seed boot. Each seed boot is pivotally supported on a longitudinal drag bar assembly connected to it about a transverse pivotal connection. The forwardly extending arm at the upper end of the seed boot selectively engages one end of a longitudinal leaf spring mounted to the drag arm assembly. A preselected planting position for the shovel and seed boot is defined by an overlying adjustable stop. An arcuate abutment surface is interposed between the seed boot arm and leaf spring. A stop is interposed between the drag arm assembly and leaf spring for limiting upward movement of the free spring end.
REFERENCES:
patent: 7241 (1850-04-01), Haversticke
patent: 48069 (1865-06-01), Ingels
patent: 3402773 (1968-09-01), Jennings et al.
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