Earth working – Plural relatively movable tools – Parallel – pivotally adjusted tool bars
Patent
1994-08-26
1995-08-22
Taylor, Dennis L.
Earth working
Plural relatively movable tools
Parallel, pivotally adjusted tool bars
172621, 172639, 172311, A01B 1902, A01B 7302
Patent
active
054431271
ABSTRACT:
A spring tooth harrow comprising an elongated tool bar having a plurality of harrow sections secured thereto by adjustable mounting brackets to enable the harrow section to be raised or lowered with respect to the draw bar. Each harrow section includes a pair of longitudinally extending arms which are pivotally secured to the mounting brackets and which are urged downwardly with respect thereto by pairs of springs. Fork pipes are rotatably mounted on the arms and extend therebetween and have spring teeth secured thereto. The pipes may be rotatably moved in unison to change the angle of attack of the spring teeth or the forwardmost pipe may be independently rotated with respect to the remaining pipes so that the angle of attack of the forwardmost spring teeth may be varied with respect to the trailing spring teeth.
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"Sunflower Series 5000 Field Cultivator," Sales Brochure, Sunflower Mfg. Co., Inc. Jan. 1989.
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Taylor Dennis L.
Thomte Dennis L.
Warnick Spencer
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