Earth working – Overload shifting – Frangible lock
Patent
1993-07-16
1995-08-22
Arola, Dave W.
Earth working
Overload shifting
Frangible lock
172265, 172705, 172720, 172765, 403367, 403372, A01B 300, E02F 502
Patent
active
054431263
ABSTRACT:
The invention relates to a grubber tine of a tubular cross-section which, as compared to known grubber tines, give reduced weight and larger flexure and vibrations when moved through the soil, which gives reduced tractive power. The grubber tine is adapted to escape obstacles within the soil in that the grubber tine is pivotally suspended on a shaft. Bosses are attached to the grubber tine through friction forces between the bosses and the grubber tine at a preferably conical contact face, achieved in that the bosses are pressed into holes in the wall of the grubber tine. In the working position, the grubber tine rests against a shaft and is kept in place by means of a safety bolt adapted to be stretched off upon the occurrence of overload. The safety bolt may be combined with a resilient member, such that the grubber tine to a certain degree may yield upon load and then return to working position. Alternatively, the safety bolt may be completely substituted by a biased spring allowing the grubber tine to rotate around the shaft, thus escaping obstacles and passing over possible obstacles, thereafter returning to working position by means of the spring force.
REFERENCES:
patent: 1010776 (1911-12-01), Langenfeld
patent: 1635442 (1927-07-01), Sigurd
patent: 1982862 (1934-12-01), Erdman
patent: 2381973 (1945-08-01), Ego
patent: 2673510 (1954-03-01), Bailey
patent: 3010744 (1961-11-01), Hollis
patent: 3450212 (1969-06-01), Sylvester
patent: 4143718 (1979-03-01), Quanbeck
patent: 4177865 (1979-12-01), Lewison
patent: 4293043 (1981-10-01), Neukom et al.
patent: 4532790 (1985-08-01), Nicholls
Glencoe "Soil Saver" Shank Mounting Conversion Brochure Sep. 1972.
Arola Dave W.
Kverneland Klepp AS
Novosad Christopher J.
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