Earth working – With drive means for tool or cleaner – Plural driven tools
Patent
1981-07-20
1983-01-25
Shapiro, Paul E.
Earth working
With drive means for tool or cleaner
Plural driven tools
172 56, 172 78, 172116, 172678, 172679, A01B 3302
Patent
active
043698468
ABSTRACT:
A frame carries two transverse digger shafts each having a plurality of diggers mounted thereon in spaced apart relationship such that the diggers form independent furrows. The frame is supported on wheels on a single axis between the two digger shafts and it tiltable on this axis substantially independently of the three point hitch by virtue of a pair of pivoted connections between the hitch and the frame. A longitudinal tilt arm extends from an elevated position over the frame and is connected near its forward end by a resilient member to the hitch or to a selected attachment point on a rigid telescoping member also extending between the tilt arm and hitch. The tilt of the frame is also biased by placement of the wheel frame axis slightly to the rear of the frame's center of gravity. The digger shafts are connected to the drive for opposite relative rotation with the rear shaft rotating rearwardly whereby its diggers apply a retarding force to the frame and stabilize the frame on the frame wheel axis. The individual diggers are broad faced for throwing sandy soil at least partially onto the ridge structure formed between furrows, and the diggers are spaced apart preferably in the range of from three to five times the width of a digger face.
REFERENCES:
patent: 91445 (1869-06-01), Hunt
patent: 284036 (1883-08-01), McBride
patent: 1333543 (1920-03-01), Greene
patent: 1421968 (1922-07-01), Lewis
patent: 1665532 (1928-04-01), Cook
patent: 3773112 (1973-11-01), Zinck
patent: 3977475 (1976-08-01), Zugai
patent: 4066131 (1978-01-01), Zandbergen
Rost Kyle W.
Shapiro Paul E.
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