Folding means for implement frame structures

Claim 2

A foldable frame means for an implement or the like comprising: a. a frame structure adapted to be connected to a towing means; b. a first wheel means pivotally connected to said frame structure; c. said frame structure having a rear transverse support beam with an end section pivotally connected to an end portion of said support beam, d. a second wheel means pivotally connected to said end section of said support beam; e. a folding link means having one end pivotally connected to said frame structure and the other end pivotally connected to the end portion of said end section of said support beam, said folding link means being hollow and internally receiving and mounting an operating fluid conduit communicating between a fluid source and a means to elevate said second wheel means; and f. folding link moving means having a power means mounted with said frame structure, and having a connecting means pivotally connected between said power means and said folding link means, said frame structure, said folding link means and said end section on said support beam being constructed and connected as above so that said end section is pivoted in a horizontal forward direction with respect to said support beam when said frame means is in a folded position, said folding link moving means providing means to fold and unfold said foldable frame means.

Claim 3

The foldable frame means of claim 1, wherein said frame structure is generally horizontally disposed A-shaped frame means provided with a generally centrally positioned and longitudinal tongue member, and said first wheel means is pivotally connected to said A-shaped frame means to support said A-shaped frame means.

Claim 4

The foldable frame means of claim 2, wherein; a. said powering means is a cylinder and piston means mounted on said tongue member of said A-shaped frame means; b. said connecting rod means has connecting rod member having one end pivotally attached to the end of said powering means and the other end thereof pivotally attached said folding link conduit means; and c. said cylinder and piston means is in fluid communication with said fluid source.

Claim 5

The foldable frame structure of claim 1, wherein said power means is a cylinder and piston means in fluid communication with a fluid source carried by said towing means and having one end thereof attached to a slide member mounted on said frame means, and said slide member pivotally attached to said connecting rod means.

Claim 6

The frame structure according to claim 1 which comprises: a. generally horizontally disposed A-shaped frame means provided with a central and longitudinal tongue member, b. opposed end sections pivotally connected to end portions of said support beam, and having second wheel Means connected to each, c. said first wheel means pivotally connected to said A-shaped frame means to support said A-shaped frame means, d. a first cylinder and piston means mounted on said tongue means, e. said second wheel means having a second cylinder and piston means for raising and lowering said second wheel means in response thereto, said second cylinder and piston means operating independently of said first cylinder and piston means, f. said folding link means having a plurality of folding link members, first of said link members having an inlet and outlet at their extremities, second of said link members having an inlet and outlet at their extremities, hinge means positioned between adjacent ends of said first and second link members.

Claim 7

In foldable frame means for an implement or the like having a horizontally disposed A-shaped frame structure provided with a generally centrally positioned and longitudinally extending tongue adapted to be connected to a towing means, and wheel means pivotally connected to said frame structure to support same on the ground and to move up and down relative said frame, the improvement, comprising: a. a rear transverse support beam with said frame and having a center section and end sections pivotally connected to and extending from said center section; b. a second wheel means pivotally connected to said end sections to support same on the ground and to move up and down relative said end sections; c. folding link means having one end pivotally connected to said frame structure and the other end pivotally connected to the end portion of said end section of said support beam, said folding link means being hollow and internally receiving and mounting an operating fluid conduit communicating between a fluid source and a means to elevate said second wheel means; d. slide means movably mounted on said tongue to be movable longitudinally therealong; e. piston and cylinder means attached to said frame structure and connected to said slide means to move said slide means; and f. connecting means pivotally connected between said slide means and said folding link means; said folding link means and said end sections being constructed and adapted to in operation be pivotally moved while substantially horizontally disposed in a generally forward direction relative said center section of said frame structure between an extended position and a folded position by said slide means and said connecting means as said slide means is moved in one direction therealong said tongue by said piston and cylinder means, and said folding link means and said end sections are adapted to be moved while substantially horizontally disposed in a generally rearward direction relative said center section of said frame structure when moved between a folded position and an extended position by said slide means being moved by said piston and cylinder means in a direction opposite said one direction.

Claim 8

In foldable frame means for an implement or the like having a horizontally disposed A-shaped frame structure provided with a generally centrally positioned and longitudinally extending tongue adapted to be connected to a towing means, and wheel means pivotally connected to said frame structure to support same on the ground and to move up and down relative said frame, the improvement, comprising: a. a rear transverse support beam with said frame and having a center section and end sections pivotally connected to and extending from said center section; b. a second wheel means pivotally connected to said end sections to support same on the ground and to move up and down relative said end sections; c. folding link means having one end pivotally connected to said frame structure and the other end pivotally connected to the end portion of said end section of said support beam, said folding link means being hollow and internally receiving and mounting an operating fluid conduit communicating between a fluid source and a means to elevate said second wheel means; d. slide means movably mounted on said tongue to be movable longitudinally therealong; e. piston and cylinder means attached to said frame structure and connected to said slide means to move said slide means; and f. connecting means pivotally connected between said slide means and said folding link means; said folding link means and said end sections being constructed and adapted to in operation be pivotally moved while substantially horizontally disposed in a generally forward direction relative said center section of said frame structure between an extended position and a folded position by said slide means and said connecting means as said slide means is moved in one direction therealong said tongue by said piston and cylinder means, and said folding link means and said end sections are adapted to be moved while substantially horizontally disposed in a generally rearward direction relative said center section of said frame structure when moved between a folded position and an extended position by said slide means being moved by said piston and cylinder means in a direction opposite said one direction.