Self-dumping crop shield

Details Self-dumping crop shield Self-dumping crop shield

1986-07-11

1987-12-29

Johnson, Richard J.

Earth working

With guard, shield or plant diverter

Fender for deflected earth

1726245, A01B 3926

Patent

active

047154497

ABSTRACT:
A crop sheild is connected to the aft ends of a pair of parallel links by a bracket assembly which can pivot to permit the shield to dump trash. The bracket assembly is pivotally connected to the aft end of the lower link and includes a slot slidably received on a pin located on the aft end of the upper link to maintain the links in a generally parallel relationship. The weight of the shield normally biases the shield to a horizontal field-working position with the end of the slot stopped against the pin. When trash builds up, the shield pivots with respect to the lower link and the slot slides over the pin as the shield moves up against the bias over the trash. Dump forces are reduced since the shields pivot independently of the parallel links.

REFERENCES:
patent: Re23154 (1949-10-01), Johnson
patent: 640444 (1900-01-01), Colbert
patent: 1581227 (1926-04-01), Pratt
patent: 1617239 (1927-02-01), Eichsteadt
patent: 2319047 (1943-05-01), Fell
patent: 2417597 (1947-03-01), Hill
patent: 2718185 (1985-09-01), Shawd
patent: 3115169 (1984-11-01), Mattson
patent: 4623024 (1986-11-01), Schlenker
John Deere Advertizing Literature, 885 No-Till/Ridge Till Row-Crop Cultivator

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