Earth working – Rolling – rotating or orbitally moving tool – Tool has circumferentially spaced teeth – tines – blades or...
Patent
1979-05-30
1980-12-09
Shapiro, Paul E.
Earth working
Rolling, rotating or orbitally moving tool
Tool has circumferentially spaced teeth, tines, blades or...
404124, A01B 2906
Patent
active
042379849
ABSTRACT:
A rotating row marker equipped with both transverse and longitudinal imprinting projections impresses a grid-type pattern into the soil for precise placement of seeds or seedlings in a subsequent planting operation. One of the transverse projections houses an eccentric weight for gravitationally returning the row marker to a predetermined position when the row marker is raised above the earth.
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Cobb David L.
Doyle Brian L.
Smith, Jr. David H.
Webster James A.
McConnell David G.
Ribando Curtis P.
Shapiro Paul E.
Silverstein M. Howard
The United States of America as represented by the Secretary of
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