Harvesters – Horse rakes – Wheel supported
Patent
1985-08-30
1987-09-01
Wilson, John J.
Harvesters
Horse rakes
Wheel supported
56375, 56 172, 172622, A01D 7600
Patent
active
046899413
ABSTRACT:
A pulled dethatching unit includes a frame having a tow bar extending forwardly for attachment to a draw bar of a pulling vehicle. The rear end of the frame has an arm pivotally attached to each side with each arm having a wheel rotatably mounted thereon. The two wheels and the tow bar cooperate so that tines, which are mounted in two rows on the frame for independent movement, do not carry any of the weight of the unit so that the bottom tip of each of the tines is slightly spaced from the ground in its rest position. Each of the tines in each of the rows is offset from each of the tines in the other row. Forward motion of the dethatching unit causes the bottom tip of each of the tines to deflect rearwardly and downwardly as it comes in contact with grass. In their deflected positions, the bottom tips of the tines contact the thatched layer to tear it loose from the soil and alternately flip the thatched layer to fall on the ground. The flipping or release action of the tines occurs periodically as the wheels run over grass clumps or uneven ground. The tow bar includes a curved saddle fitting within an opening in a horizontal plate of the frame so that the angle of the tow bar can be adjustable in accordance with the height of the draw bar to which it is to be attached.
REFERENCES:
patent: 2836430 (1958-05-01), Langenbacher
patent: 3765159 (1973-10-01), Neff
patent: 4146096 (1979-03-01), Rocker
patent: 4317327 (1982-03-01), Doering
patent: 4472930 (1984-09-01), Smith
Brinly-Hardy Co., Inc.
Leach, Jr. Frank C.
Wilson John J.
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