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US 4,231,218 AGranted
Rake with pivotable arms
AssigneeVicon Espana S.A.
InventorLuis D. Delgado
Life of this patent
Estimating the term…
Abstract
A rake comprising a frame provided with wheels, a subframe pivotally connected with said frame, two board supports pivotally connected with the subframe and a plurality of rake boards rotatably journalled at the board supports is improved with the object that it can be readily constructed in a simple manner, that it satisfactorily matches slopes and unevennesses of the ground and that it can be readily moved at will into the operative position or a transport position. For this purpose the subframe is formed mainly by relatively independently pivotable arms fastened to the frame.
Claims24
A rake comprising at least one main frame provided with wheels, a subframe pivotally connected with said main frame for up and down swinging movement relative thereto, two board supports pivotally connected with said subframe for seesaw movement relative thereto and a plurality of rake boards rotatably arranged on the board supports, characterized in that the subframe is formed mainly by relatively independently pivotable arms secured to the main frame.
A side delivery rake comprising, in combination:
- a horizontally extending main frame adapted to be attached to a towing vehicle, said main frame presenting transversely spaced opposite end portions, a ground-engaging wheel carried by each such end portion, and pivot means fixed to said main frame between said end portions for supporting a subframe;
- a subframe pivotally mounted on said pivot means, said subframe comprising a first arm pivoted about a generally horizontal axis defined by said pivot means and extending transversely in one direction from said pivot means, movement of said first arm about said pivot means defining a pivot plane of said first arm, and a second arm pivoted about a generally horizontal axis defined by said pivot means and extending transversely in the other direction from said pivot means, movement of said second arm about its pivot defining a pivot plane of said second arm, second pivot means fixed to said first arm adjacent the free end thereof for defining a pivot axis extending generally perpendicular to the pivot plane of said first arm, and third pivot means fixed to said second arm adjacent the free end thereof for defining a pivot axis extending generally perpendicular to the pivot plane of said second arm;
- a first rake support attached to said first arm through said second pivot means and a second rake support attached to said second arm through said third pivot means, each rake support extending transversely on opposite sides of its pivot axis;
- and
- a plurality of rake wheels rotatably mounted on each rake support for cumulatively covering a raking swath.
2 more elements
A side delivery rake comprising, in combination:
- a drawbar adapted to be attached at one end to a powered vehicle in trailing relation thereto;
- a main frame of inverted, generally U-shaped configuration defining a horizontal frame bar having a depending leg at each end thereof;
- means pivotally attaching the trailing end of said drawbar to a central portion of said frame bar and a link adjustably connecting said frame bar to said drawbar in triangulating relation thereto so as to dispose said frame bar at different transverse attitudes with respect to said drawbar;
- a wheel carried by each leg of said main frame and means adjustably attaching each wheel to its leg whereby said wheels may track the powered vehicle at each of the different transverse attitudes of said drawbar;
- pivot means fixed to a central region of said frame bar and defining at least one generally horizontal pivot axis which intersects a vertical plane containing said frame bar at an acute angle;
- a first arm pivotally attached at one end to said pivot means and projecting therefrom to present a free end located forwardly with respect to said frame bar and a second arm pivotally attached at one end to said pivot means and projecting therefrom to present a free end located rearwardly with respect to said frame bar;
- a first rake frame pivotally attached to said free end of the first arm and disposed forwardly thereof, said first rake frame including at least a pair of forwardly projecting legs disposed respectively inboard and outboard with respect to said free end of the first arm and a rotary rake wheel rotatably mounted at the forward end of each such leg;
- a second rake frame pivotally attached to said free end of the second arm and disposed rearwardly thereof, said second rake frame including at least a pair of rearwardly projecting legs disposed respectively inboard and outboard with respect to said free end of the second leg and a rotary rake wheel rotatably mounted at the rearward end of each such leg;
- and
- counterbalancing means interconnecting said first and second arms for relieving some of the weight carried thereby.
7 more elements
A side delivery rake comprising, in combination:
- a drawbar adapted to be attached at one end to a powered vehicle in trailing relation thereto, a wheel-supported elongate main frame pivotally attached to a trailing portion of said drawbar, and adjustable link means triangularly interconnecting said drawbar and said main frame for disposing said main frame at different transverse attitudes with respect to said drawbar;
- a first arm pivotally attached adjacent one end thereof to said main frame and projecting therefrom to present a free end disposed forwardly with respect to said main frame and which is free to swing up and down, a first elongate rake frame pivotally attached to said free end of the first arm, between the ends of said first rake frame, whereby the ends of said first rake frame are free to seesaw with respect to said free end of the first arm, and at least one rotatable rake wheel rotatably carried by each end of said first rake frame;
- and
- a second arm pivotally attached adjacent one end thereof to said main frame and projecting therefrom oppositely with respect to said first arm to present a free end disposed rearwardly with respect to said main frame and which is free to swing up and down, a second elongate rake frame pivotally attached to said free end of the second arm, between the ends of said second rake frame, whereby the ends of said second rake frame are free to seesaw with respect to said free end of the second arm, and at least one rotatable rake wheel rotatably carried by each end of said second rake frame.
1 more element
A side delivery rake comprising, in combination:
- an elongate main frame and a drawbar attached to the central region of said main frame such that said main frame extends transversely with respect to said drawbar;
- a first arm pivotally attached at one end about a generally horizontal axis to said central region of said main frame and extending from said axis forwardly of said main frame to lie between said main frame and said drawbar;
- a second arm pivotally attached at one end about a generally horizontal axis to said central region of the main frame and extending from such axis rearwardly of said main frame to lie on that side of the main frame opposite that side upon which said first arm lies;
- a first rake frame pivotally attached to the free end of said first arm for seesaw motion relative thereto in a plane essentially parallel to said first arm;
- a second rake frame pivotally attached to the free end of said second arm for seesaw motion relative thereto in a plane essentially parallel to said second arm;
- and
- a plurality of vertically disposed rake wheels pivotally carried by each of said rake frames.
4 more elements
Dependencies are inferred from the claim text.