Earth working – Tool – standard or connection – Spring biased or formed tool or tool part
Patent
1978-04-07
1979-12-11
Johnson, Richard J.
Earth working
Tool, standard or connection
Spring biased or formed tool or tool part
267 20A, A01B 3524
Patent
active
041778650
ABSTRACT:
This invention relates to a cultivating shank assembly in which a mounting frame is comprised of a mounting frame portion and a tool shank support portion pivoted thereon. The mounting frame portion and the tool support portion are formed of plates which are held together by suitable transversely extending plates which support the mounting frame on a cultivating tool bar and mount the tool shank respectively. A compression spring for the mounting assembly is connected between the tool shank portion and the mounting frame portion of the mounting frame and is guided between inner and outer cylindrical spring retainers which are pivoted respectively on the tool shank support portion and the mounting frame portion to prevent the compression spring from buckling and to guide the same such that the compressive force will always be applied along the extent of the spring. Suitable apertures in the mounting frame portion provide a limit stop to define the pitch adjustment of the tool shank and provide preload adjustment for the compression spring.
REFERENCES:
patent: 2277322 (1942-03-01), Heaslet
patent: 3098529 (1963-07-01), Wade
patent: 3258076 (1966-06-01), Groenke
patent: 3480086 (1969-11-01), Groenke
patent: 3493055 (1970-02-01), Van Peursem
patent: 3700038 (1972-10-01), Essex
patent: 3700039 (1972-10-01), Essex
patent: 3981367 (1976-09-01), Mydels
patent: 4011916 (1977-03-01), Neal
Advertising Brochure Koehring, 1972, Appleton, Wisc., Brady 2500 Widewing Field Cult.
Advertising Brochure Glencoe Model SS, Glencoe, Minn. 9/1972.
Dynamics Corporation of America
Johnson Richard J.
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