Wingfold positioning device

Details Wingfold positioning device Wingfold positioning device

1974-08-01

1976-07-06

Shapiro, Paul E.

Earth working

Plural wheeled implements

Outrigged implement adjustable inwardly

172457, 172481, 172674, A01B 6314, A01B 4900

Patent

active

039676846

ABSTRACT:
A foldable multiple sectioned farm implement having a center section, side sections that fold inwardly and upwardly so that the center of gravity of the folded sections is inboard of the respective folding pivotal axis, and biasing structure which acts to unfold the side sections by forcing the respective center of gravity of each folded section outwardly of its respective pivotal axis. The biasing structure is mounted on a brace member secured to the center section to engage the side sections when folded inwardly and upwardly. Included with the biasing structure are support mounts positioned on each end of the brace member, each of which slidably supports a spring biased rod. Each rod contacts a side section to bias it outwardly by the spring bias acting thereon.

REFERENCES:
patent: 2972385 (1961-02-01), Walberg
patent: 3250333 (1966-05-01), Day
patent: 3321028 (1967-05-01), Groenke
patent: 3670823 (1972-06-01), Mathews et al.
patent: 3766987 (1973-10-01), Orthman
patent: 3799272 (1974-03-01), Watson
patent: 3828860 (1974-08-01), Poland
patent: 3844358 (1974-10-01), Shuler et al.
patent: 3866688 (1975-02-01), Hansen

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