Onion planter

Planting – Drilling – Drag-bar units

Patent

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Details

111 87, 172551, 172573, A01C 500

Patent

active

046229060

ABSTRACT:
Planter apparatus (10) including a plurality of pivotally mounted arms (22, 24) each having a disc unit (26) arranged on an outboard end thereof has each of the arms constructed with horizontal and angular portions (28, 30 and 32, 34) disposed at such an angle with respect to one another that the horizontal portion experiences greatly reduced side forces. The lighter construction of the arms thus afforded permits inclusion of a fine adjustment in the resilient control arrangement (58) associated with each of the arms, with this fine adjustment preferably being obtained by use of torsion springs (62) associated with each of the arms. A stop assembly (48) is provided inboard of the pivot point of each of the arms for potential abutment with an associated subframe (16) of the apparatus in order to limit downward swinging movement of an associated disc unit in the event of disengagement or other failure of the primary motion control system of the arms.

REFERENCES:
patent: 433036 (1890-07-01), Rhodes
patent: 1415674 (1922-05-01), Mitchell
patent: 1642908 (1927-09-01), Taylor
patent: 2429841 (1947-10-01), Phillips
patent: 2551475 (1951-05-01), Turner
patent: 3611956 (1971-10-01), Moore
patent: 3851802 (1974-12-01), Marshall
patent: 4078504 (1978-03-01), Tye
patent: 4194575 (1980-03-01), Whalen
patent: 4466492 (1984-08-01), Steinberg

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