Earth working – Rolling – rotating or orbitally moving tool – Tool has circumferentially spaced teeth – tines – blades or...
Patent
1988-12-19
1989-10-03
Johnson, Richard J.
Earth working
Rolling, rotating or orbitally moving tool
Tool has circumferentially spaced teeth, tines, blades or...
172556, A01B 2104
Patent
active
048710318
ABSTRACT:
A rotary hoe tool of the type wherein one or more of such rotary hoe tools are mounted for rotation on one or more axles supported by a frame assembly for cutting and digging into the ground as they are rotated. A plurality of elongated teeth or cutting tools are pivotally mounted for limited pivotal movement on a rotatable hub, so when each tooth or cutting tool begins to dig into the ground as the hub rotates it to that position, the tooth or cutting tool itself pivots rearwardly a permitted limited distance against the pressure and resistance of the ground. Such pivotal movement compresses a wedge shaped resilient and compressible member interposed between each pair of adjacent teeth or cutting tools, which limits the rearward pivotal movement of such tooth or cutting tool and which then propels it forward as the initial pressure or resistance dissipates and the compressible member expands back to its non-compressed state. This gives the cutting tools a kicking action as they are worked into, through and up out of the soil to better loosen the soil and to better cut grasses and weeds.
REFERENCES:
patent: 1757511 (1930-05-01), Brewer
patent: 2054129 (1936-09-01), Kelsey
patent: 2199954 (1940-05-01), Kelsey
patent: 2366624 (1945-01-01), Kelsey
patent: 2438707 (1948-03-01), Kropp
patent: 2603139 (1952-07-01), Johnson
patent: 2816499 (1957-12-01), Osthaus
patent: 2888993 (1959-06-01), Dunning
patent: 3170421 (1965-02-01), Norris
patent: 4114697 (1978-09-01), Carlucci
Johnson Richard J.
Kettelson Ernest
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