Self-adjusting scrapers for double disk openers

Details Self-adjusting scrapers for double disk openers Self-adjusting scrapers for double disk openers

1986-09-16

1988-04-12

Johnson, Richard J.

Earth working

Rolling, rotating or orbitally moving tool

With disk cleaning means

172566, 111 88, A01C 716, A01B 1516, A01B 2306

Patent

active

047368039

ABSTRACT:
An improved double disk scraper assembly having a pivot post projecting rearwardly from the principal vertical support, a first scraper with a first pivot end on the post and a second scraper with a second pivot end on the first pivot end. The first and second pivot ends are preferably sleeved members. The scrapers are each engaged with a disk under the direct force of a biasing means, preferably a coil spring, between them. The pivot independently within a limited range which serves to keep the biasing means in place. A seed tube passes vertically between the scrapers for seed deposition at a forward position.

REFERENCES:
patent: 139290 (1873-05-01), Bradley
patent: 618110 (1899-01-01), Lundy
patent: 734017 (1903-07-01), Van Brunt
patent: 1017318 (1912-02-01), Rieske
patent: 1264970 (1918-05-01), Pfeifer
patent: 4206817 (1980-06-01), Bowerman
patent: 4373456 (1983-02-01), Westerfield

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