Three-point hitch guidance control
OwnerLarry E. Tjaden, Leonard E. Tjadeninventors
Life of this patent
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Abstract
A horizontal guidance control system for a standard three point tractor hitch is disclosed. The system employs the use of a manual control element which actuates a pair of hydraulic cylinders contained in a pair of hydraulic adjusters. The control element causes the extension of one cylinder and the retraction of the other cylinder, thereby causing controlled horizontal movement of a pair of pull links of the tractor hitch.
Claims7
A horizontal guidance control for a three-point tractor hitch attached to the chassis of a tractor and having a pair of pull links universally connected to said chassis, said guidance control comprising:
- (a) force means positioned between said tractor chassis and said pull links, and being actuable to move said pull links simultaneously in a horizontal direction;
- (b) control means for actuating said force means to horizontally position said pull links with respect to said chassis;
- (c) a vertically aligned abutment member is mounted on said tractor chassis;
- (d) said force means has a lever arm that bears against said vertically aligned abutment member on said tractor chassis and includes a hydraulic cylinder for expanding and retracting said force means to cause the movement of said pull links, and said lever arm has one end pivotally attached to one of said pull links and an opposite end on which said cylinder is mounted.
A horizontal guidance control for a three-point tractor hitch attached to the chassis of a tractor and having a pair of horizontally spaced apart pull links universally connected to said chassis, said guidance control comprising:
- (a) force means associated with each of said pull links and having:
- (1) an adjustable lever member formed of at least two lever arms pivotally connected together at one end and positioned between said associated pull link and said tractor chassis;
- and
- (2) a hydraulic cylinder mounted on arms and having a cylinder rod contacting the other of said lever arms to adjust the lever member upon actuation of said cylinder to move said associated pull link in a horizontal direction;
- and
- (b) control means for actuating said force means to position said pull links with respect to said chassis.
Dependencies are inferred from the claim text.