Deep tillage standard and bracket therefor

Details Deep tillage standard and bracket therefor Deep tillage standard and bracket therefor

1993-11-30

1995-06-27

Reese, Randolph A.

Earth working

Overload shifting

Against spring return device

172264, A01B 6104

Patent

active

054271835

ABSTRACT:
A double spring reset standard and spring bracket therefor particularly useful for intermediate tillage operations at depths of approximately 13 inches wherein high average draft loads are in the range of 2000 pounds. The moment arm that the springs must resist to keep the standard from tripping during normal operation is minimized by bringing the draft force line closer to the standard pivot. The spring bracket which must be able to resist extremely high torsional stresses is fabricated from 0.375 inch thick metal blanks in a single cold die operation and includes offsets and specially designed edge flanges to reduce edge stresses at the offset bends.

REFERENCES:
patent: 2906353 (1959-09-01), Rogers
patent: 3049181 (1962-08-01), Oerman et al.
patent: 3098529 (1963-07-01), Wade et al.
patent: 4032096 (1977-06-01), Perrault et al.
patent: 4078615 (1978-03-01), Kelley
patent: 4463813 (1984-07-01), Long et al.
patent: 4530406 (1985-07-01), Hake et al.
patent: 4548277 (1985-10-01), Dietrich, Sr. et al.
patent: 5165486 (1992-11-01), Davidson

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