Earth working – With drive means for tool or cleaner – Plural driven tools
Patent
1975-09-09
1977-07-12
Marlo, George J.
Earth working
With drive means for tool or cleaner
Plural driven tools
172700, 172707, 172711, 172526, A01B 3306, A01B 3310
Patent
active
040348148
ABSTRACT:
A cultivator or harrow has a row of soil working members and each of these members is a rotatable support on a shaft that is driven to rotate about an upwardly extending axis. Each support is comprised by two similar diametrically opposed portions and each portion has a lower tine and an upper tool that differs in shape and form from the lower tine. The upper tool can be a pair of different tines or a tine-like extension of the support portion that functions as a rigid tine. The lower more resilient tine works the sub-soil and the upper tool works the topsoil. The lower tines of the two portions can be a single element of spring steel that is retained by quick release pins in lower support recesses and the fastening portions of the lower tines can bear on the heads of further pins that retain upper tines in their corresponding recesses so that one release means retains all of the tools on each support portion.
REFERENCES:
patent: 1697677 (1929-01-01), Davidson
patent: 3169583 (1965-02-01), Thurow
patent: 3783948 (1974-01-01), VAN DER Lely et al.
patent: 3841411 (1974-10-01), VAN DER Lely et al.
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