Hay raking and tedding apparatus
OwnerNicolaas L. Sielinginventor
Life of this patent
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Abstract
A hay making apparatus includes a rotor carrying demountable rigid tynes spaced about its periphery and coupled to a drive motor, preferably a hydraulic type. The rotor has an annular body of a resiliently deformable elastomeric material advantageously having a cross-sectional shape similar to that of a tire for a motor vehicle with its longitudinal axis vertically oriented. The rotor has the following: an inwardly projecting upper wall which couples the annular body flexibly to the motor; an inwardly projecting lower wall which follows undulations in the ground surface; and a vertical wall in which passages are formed for seating the tynes. In use, the tynes are held in place solely by centrifugal force and by contact with the passage walls.
Claims9
A rotor assembly for a hay making apparatus, including a rotor having a body of a resiliently deformable elastomeric material, arranged to be coupled to drive means for rotating the rotor about a rotational axis, and a plurality of tynes spaced about the periphery of the body, wherein each tyne comprises:
- a first portion and a second portion, said first portion including at least one leg which projects through a passage in the body, said passage having transverse dimensions such that the leg is capable of sliding within the passage until the second portion of each tyne bears against the body, said second portion of each tyne being joined to the first portion and having a mass which is such that each tyne is held in an operational position solely by virtue of contact between the tyne and the body where the first portion passes through the passage and by virtue centrifugal force arising from rotation of the rotor which causes the second portion to be held against the body, each tyne being pivotable relative to the body such that the centrifugal force acts to orient the leg of each tyne at a predetermined angle with respect to a radial direction of the rotor.
Dependencies are inferred from the claim text.