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US 4,015,411 AGranted
Raking machines
OwnerCornelis van der Lely, Ary VAN DER Lelyinventors
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OwnerCornelis van der Lely, Ary VAN DER Lelyinventors
Estimating the term…
A raking machine has preferably two rake heads that are rotatable about upwardly extending axes. Each rake head has an outer circumference defined by a generally circular flexible wall with raking means supported on the circumference of the wall. The wall can have stiffening members to reinforce the wall and to hold tines or tine groups that can be pivotally mounted adjacent the lower portion of the wall. Also, the wall can be supported from a central hub by flexible spokes or chains. Alternatively, the wall can be foldable to an accordian configuration and hold crop within the folds which are controlled by a link chain and track with a driven sprocket member. The flexible wall is controlled to deposit crop at the desired place during rotation of the head or heads and crop guide members can be positioned with respect to the head or heads to arrange the crop in swaths.
A raking machine comprising a frame movable over the ground and at least one rake head supported on said frame and rotatable about an upwardly extending axis, said rake head comprising a substantially central portion and outer flexible wall means which, at least during rotation, is deflectable and extends around said axis of rotation, support means interconnecting said flexible wall means with the central portion and raking means on said wall means, said raking means being located adjacent the outer perimeter of said wall means, driving means connected to rotate said rake head and said wall means being acted upon by centrifugal forces generated during rotation thereof to normally assume an outer generally circular configuration when viewed in plan.
A raking machine comprising a frame movable over the ground and at least one rake head supported on said frame and rotatable about an upwardly extending axis, said rake head comprising a substantially central portion and an outer flexible wall, said wall being comprised, at least in part by a deflectable sheet that extends around said axis of rotation, support means interconnecting said wall with the central portion and raking means on said sheet, said raking means being located adjacent the outer perimeter of said wall, driving means connected to rotate said rake head and said wall being acted upon by centrifugal forces generated during rotation thereof to normally assume an outer generally circular configuration when viewed in plan.
A raking machine comprising a frame movable over the ground and at least one rake head supported on said frame and rotatable about an upwardly extending axis, said rake head comprising a substantially central hub and an outer flexible sheet which, at least during rotation, is a generally circular, deflectable wall that substantially encircles said axis of rotation, support means interconnecting said flexible sheet with the central hub and crop gathering means mounted on said sheet adjacent the bottom and outer perimeter of said wall, driving means connected to rotate said rake head and said gathering means extending outwardly from said outer perimeter during operational rotation.
A raking machine comprising a frame movable over the ground and at least one rake head supported on said frame and rotatable about an upwardly extending axis, said rake head comprising a substantially central portion of an outer flexible sheet which, at least during rotation, is a generally circular deflectable wall that extends around said axis of rotation, support means interconnecting said flexible sheet with the central portion and tine means on said sheet, said tine means being located adjacent the outer perimeter of said sheet, driving means connected to rotate said rake head and said sheet being positioned between said tine means and said central portion.
A raking machine comprising a frame movable over the ground and two rake heads supported on said frame and rotatable about corresponding upwardly extending axes, each of said rake heads comprising a substantially central portion and an outer flexible wall, said wall being comprised, at least in part by a deflectable sheet that extends around said axis of rotation, support means interconnecting said wall with the central portion and raking means on said sheet, said raking means being located adjacent the outer perimeter of said wall, driving means connected to rotate said rake head and said wall being acted upon by centrifugal forces generated during rotation thereof to normally assume an outer generally circular configuration when viewed in plan.
Dependencies are inferred from the claim text.