Foldable hay rake
First Claim
1. A foldable hay rake, comprising,a base frame member having forward and rearward ends, and opposite sides, a tongue member secured to the forward end of the base frame for securing the hay rake to a prime mover, a pair of elongated wing arms having inner and outer ends with the inner ends being pivotally secured to the base frame and being adapted to swing outwardly and diagonally with respect to the base frame, an elongated hay rake arm structure pivotally secured to the outer ends of the wing arms, and having a midsection and forward and rearward ends, a plurality of hay rake wheels secured to the hay rake arm structure, positioning wheels pivotally secured to the midsection of the hay rake arm structure, caster wheels pivotally secured to the hay rake structure, adjacent its forward and rearward ends, the wing arms each being comprised of a spaced beam and strut in parallel relation to form a parallelogram configuration, each wing arm being operatively connected by its outer end to a vertically disposed post connected to the positioning wheels to hold the positioning wheels in a forwardly extending direction regardless of the pivotal position of the hay rake arm structure with respect to the base frame and the wing arms, and power means for pivoting the wing arms with respect to the base frame.
1 Assignment
0 Petitions
Accused Products
Abstract
A foldable hay rake has two rake arms comprised of two or more arm members with rake wheels thereon. The hay rake arms are pivotally secured together to a pivot assembly to pivot in a vertical plane. The pivot assembly is pivotally secured for pivoting in a horizontal plane to a vertical post having positioning wheels at a lower end. An upper end is pivotally secured to outer ends of wing arms comprised of parallelogram members which are pivotally secured to a central base frame, which has a power cylinder to pivot the wing arms in a horizontal plane.
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Citations
26 Claims
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1. A foldable hay rake, comprising,
a base frame member having forward and rearward ends, and opposite sides, a tongue member secured to the forward end of the base frame for securing the hay rake to a prime mover, a pair of elongated wing arms having inner and outer ends with the inner ends being pivotally secured to the base frame and being adapted to swing outwardly and diagonally with respect to the base frame, an elongated hay rake arm structure pivotally secured to the outer ends of the wing arms, and having a midsection and forward and rearward ends, a plurality of hay rake wheels secured to the hay rake arm structure, positioning wheels pivotally secured to the midsection of the hay rake arm structure, caster wheels pivotally secured to the hay rake structure, adjacent its forward and rearward ends, the wing arms each being comprised of a spaced beam and strut in parallel relation to form a parallelogram configuration, each wing arm being operatively connected by its outer end to a vertically disposed post connected to the positioning wheels to hold the positioning wheels in a forwardly extending direction regardless of the pivotal position of the hay rake arm structure with respect to the base frame and the wing arms, and power means for pivoting the wing arms with respect to the base frame.
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19. A foldable hay rake, comprising,
a base frame member having forward and rearward ends, and opposite sides, a tongue member secured to the forward end of the base frame for securing the hay rake to a prime mover, a pair of elongated wing arms having inner and outer ends with the inner ends being pivotally secured to the base frame and being adapted to swing outwardly and diagonally with respect to the base frame, an elongated hay rake arm structure pivotally secured to the outer ends of the wing arms, and having a midsection and forward and rearward ends, a plurality of hay rake wheels secured to the hay rake arm structure, positioning wheels pivotally secured to the midsection of the hay rake arm structure, each wing arm being operatively connected by its outer end to a vertically disposed post connected to the positioning wheels, a pivotal assembly mounted on each of said post above said positioning wheels, the pivotal assembly including horizontal and vertical subframes pivotally secured together about a vertical axis, the vertical subframe being pivotally secured to the rake arm structure about a horizontal axis, the hay rake arm structure being comprised of at least two arm members pivotally secured at inner ends to pivot about a horizontal axis, and one of the arm members being pivotally secured about a horizontal axis to the vertical subframe adjacent its inner end.
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23. A foldable hay rake, comprising,
a base frame member having forward and rearward ends, and opposite sides, a tongue member secured to the forward end of the base frame for securing the hay rake to a prime mover, a pair of elongated wing arms having inner and outer ends with the inner ends being pivotally secured to the base frame and being adapted to swing outwardly and diagonally with respect to the base frame, an elongated hay rake arm structure pivotally secured to the outer ends of the wing arms, and having a midsection and forward and rearward ends, a plurality of hay rake wheels secured to the hay rake arm structure, positioning wheels pivotally secured to the midsection of the hay rake arm structure, caster wheels pivotally secured to the hay rake structure, adjacent its forward and rearward ends, and wherein each wing arm is operatively connected by its outer end to the upper end of a vertically disposed post connected to the positioning wheels, and power means on the base frame and connected to the wing arms for pivoting the wing arm with respect to the base frame.
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24. A foldable hay rake, comprising,
a base frame member having forward and rearward ends, and opposite sides, a tongue member secured to the forward end of the base frame for securing the hay rake to a prime mover, a pair of elongated wing arms having inner and outer ends with the inner ends being pivotally secured to the base frame and being adapted to swing outwardly and diagonally with respect to the base frame, an elongated hay rake arm structure pivotally secured to the outer ends of the wing arms, and having a midsection and forward and rearward ends, a plurality of hay rake wheels secured to the hay rake arm structure, positioning wheels pivotally secured to the midsection of the hay rake arm structure, a laterally extending beam on the base frame member, power means for moving the laterally extending beam in a forward or rearward direction with respect to the base frame, and elongated tie rods connecting outer ends of the laterally extending beam to the wing arms to pivot the wing arms from a position approximately parallel to the sides of the base frame to and from an outwardly and diagonally extended position from the base frame to adjust the distance between the posts and the positioning wheels on the opposite ends of the wing arms.
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26. A foldable hay rake, comprising,
a base frame member having forward and rearward ends, and opposite sides, a tongue member secured to the forward end of the base frame for securing the hay rake to a prime mover, a pair of elongated wing arms having inner and outer ends with the inner ends being pivotally secured to the base frame and being adapted to swing outwardly and diagonally with respect to the base frame, an elongated hay rake arm structure pivotally secured to the outer ends of the wing arms, and having a midsection and forward and rearward ends, a plurality of hay rake wheels secured to the hay rake arm structure, wheels supporting the hay rake arm structure, the wing arms each being comprised of a spaced beam and strut in parallel relation to form a parallelogram configuration, and power means for pivoting the wing arms with respect to the base frame.
Specification