Tillage implements
OwnerPeter D. T. Tophaminventor
Life of this patent
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Abstract
A tillage element for use in a plough, harrow or the like is described which comprises a disc having a substantially planar portion and an inclined flange portion extending from the periphery of said central portion, an abrupt transition being provided from the central portion to the flange portion. The tillage element provides better penetration, inversion of soil and improved ploughing as compared with a conventional disc plough having concavely curved rotary discs. The invention also relates to tilling apparatus using a-plurality of such tillage elements and description is given as to how the tillage elements can be used in such apparatus in combination with a leg provided with a point with the tillage element being pivotable readily between positions, permitting both left- and right-hand ploughing alternatively to be carried out.
Claims17
Tilling apparatus comprising:
- a frame;
- a plurality of tillage elements mounted on the frame as to be movable each about a pivot axis between a first tilling position and a second tilling position in which the tillage element is reversed with respect to a direction of forward movement of the frame during tilling, said tillage elements being spaced apart diagonally across the frame with respect to said direction of forward movement, each tillage element having an axis of rotation about which it is rotatable to bring a portion of a forward edge of the tillage element into contact with the ground and the axes of rotation of the tillage elements being at least substantially parallel one with another, and each tillage element comprising a disc having a substantially planar central portion and an inclined flange portion extending from a periphery of said central portion, an abrupt transition being provided from the central portion to the flange portion;
- a plurality of fixed soil penetrating elements each having a cutting edge for engaging the ground during tilling to cut a furrow and each being mounted in front of an associated one of said tillage elements;
- and
- a plurality of landslides each extending rearwardly from a said fixed soil penetrating element to pass, in use, below a said ground contacting forward edge portion of an associated one of said tillage elements in both the first and second tilling positions of that tillage element;
- wherein the ground contacting forward edge portion of each said tillage element is substantially aligned with the pivot axis of that tillage element and also with its associated fixed soil penetrating element in both the first and second tilling positions of that tillage element.
Dependencies are inferred from the claim text.