Haymaking machine for tedding and windrowing of fodder
AssigneeKuhn S.A.
InventorJerome Aron
Life of this patent
Estimating the term…
Abstract
A haymaking machine for the tedding and windrowing of fodder, comprises a pair of rake wheels driven in rotation on which working tool carrier arms extend outwardly and are mounted for pivoting in support bearings articulatedly connected to a drive hub. Each of these arms has at its end adjacent the axis of rotation of the corresponding rake wheel, a control crank having a roller thereon. The roller rolls on one of two guide tracks. The inner guide track is for windrowing and the outer guide track is for tedding. The arms occupy a relatively raised position and the axes of rotation of the wheels are tipped forward during tedding; while the arms occupy a relatively lowered position and the axes of rotation of the wheels are substantially upright during windrowing.
Claims17
In a haymaking machine for the tedding and windrowing of fodder, of the type comprising one or more rake wheels driven in rotation, on which working tool-carrier arms extend outwards and are mounted for pivoting in support bearings articulatedly connected to a drive hub, each of the said working tool-carrier arms having at its inner end a control crank provided with a roller;
- the improvement in which the said roller (17) moves during work in a control cam (18) having two guide tracks (19 and 20), one of the said guide tracks being intended to guide the rollers (17) of the control cranks (16) of the tool-carrier arms (11) of one and the same rake wheel (1 or 2) during windrowing work and the other of the said guide tracks being intended to guide the said rollers (17) during tedding work, and in that the angle (.alpha.) formed during windrowing by the longitudinal axis (21) of the portion (22) of the tool-carrier arms (11) which is disposed in the support bearings (13), when this axis (21) extends in a plane (P) parallel to the direction of travel of the machine, with a plan (L) substantially perpendicular to the said direction of travel which passes through the rotation axis (6 or 7) of the corresponding rake wheel (1 or 2), is greater than the angle (.beta.) formed during tedding by the said longitudinal axis (21) of the portion (22) of the tool-carrier arms (11) which is disposed in the support bearings (13) when this axis (21) extends in a plane (P) parallel to the direction of travel, with the said plane (L) substantially perpendicular to the direction of travel which passes through the rotation axis (6 or 7) of the corresponding rake wheel (1 or 2).
Dependencies are inferred from the claim text.