Earth working – Diverse tools – Second implement follows path of first
Patent
1977-06-08
1978-11-28
Stouffer, Richard T.
Earth working
Diverse tools
Second implement follows path of first
172178, 172615, 172624, 172626, 172643, A01B 2104, A01B 4902
Patent
active
041271785
ABSTRACT:
An attachment for an earth working apparatus having a mobile frame with central and wing sections, each with forward and rear frame members and a plurality of earth working members thereon. The attachment includes a plurality of reach arms for each section and having a forward end portion thereof connected to the forward and rear frame members of the respective frame section. A vertically adjustable hanger unit is swingably mounted on each reach arm and has a tool bar carrying support member swingably mounted thereon. Each hanger unit is constructed so as to permit an elongated, adjustable drag tension spring to have unusually great length such as by allowing a lower end portion to be connected to the respective support member rearwardly of the hanger unit and an upper end portion to be connected to the respective reach arm forwardly of the hanger unit.
REFERENCES:
patent: 693882 (1902-02-01), Morrison
patent: 1113219 (1914-10-01), Kiggins
patent: 2321663 (1943-06-01), Donovan
patent: 2986828 (1961-06-01), Lapins et al.
patent: 3500936 (1970-03-01), Vigen
patent: 3774694 (1973-11-01), Gates
patent: 3921726 (1975-11-01), Connor et al.
patent: 3991831 (1976-11-01), Foster
patent: 4029155 (1977-06-01), Blair et al.
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