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US 4,102,406 AGranted
Ground conditioning device and method of conditioning soil
AssigneeOrthman Manufacturing, Inc.
InventorHenry K. Orthman
Life of this patent
Estimating the term…
Abstract
Water-holding and retaining cavities are formed in furrows with the cavities being staggered between adjacent rows. An arm spring biased downwardly carries a hub having spikes in planes laterally spaced apart with the spikes around the hub being staggered between the planes. Each spike is concave longitudinally and in transverse cross section and is secured to opposite sides of a disc mounting plate by a pair of clamping elements one of which is integrally connected to the mounting plate.
Claims3
A ground conditioning device comprising,
- an arm having mounting means at one end for connection to an implement frame,
- a plate disc member rotatably mounted to the other end of said arm, said disc member having first and second faces,
- a plurality of fastener elements securely mounted to and extending from said first and second faces in circumferentially spaced apart disposition, said fastener elements of said first face staggered circumferentially alternatively from said fastener elements of said second face, said fastener elements being concave longitudinally,
- a plurality of ground engaging spikes adapted to adjoin in nesting relationship said fastener elements so as to extend radially from said disc member,
- attachment means for detachably mounting said spikes in mating adjoining relationship to said fastener elements, and
- said ground engaging spikes being concave in transverse cross section and concave longitudinally to engage and scoop plugs of soil from the ground as said disc member rotates.
3 more elements
Dependencies are inferred from the claim text.