Remote header angle adjustment mechanism for swing-tongue harvesters

An attachment for adapting a pull-type harvester for remote header tilt adjustment wherein the harvester has a frame, a harvesting header attached to the frame in a manner permitting the header to be adjustably tilted between a number of harvesting tilt positions relative to the frame, and a hydraulic operating circuit for use in controlling a certain function of the harvester, the attachment comprising:

• a hydraulic tilt circuit including a hydraulic cylinder and fluid flow means for connecting the cylinder with a remote source of hydraulic pressure;
• means for operably coupling the cylinder between the header and the frame for effecting said adjustable tilting;
• a control valve assembly connectable with said circuits and shiftable between an operating circuit position in which the operating circuit communicates with the source of hydraulic pressure and an alternative tilt circuit position in which the tilt circuit communicates with the source of hydraulic pressure;
• and
• actuating mechanism operably connectable with said valve assembly for selectively and remotely controlling the shifting of the valve assembly between its alternative positions.

In a pull-type crop harvesting machine, the improvement comprising:

• a mobile frame;
• a pull-tongue pivotally coupled with the frame for adjustable horizontal swinging movement about an upright axis between a number of angular positions relative to the path of travel of the machine for varying the lateral position of the machine relative to a towing vehicle;
• a harvesting header attached to the frame in a manner permitting the header to be adjustably tilted between a number of harvesting tilt positions relative to the frame and raised and lowered relative to the frame between transport and harvesting positions;
• a hydraulic swing circuit including a swing cylinder for controlling said swinging of the pull-tongue;
• a hydraulic tilt circuit including a tilt cylinder for controlling said tilting of the header;
• a hydraulic lift circuit including a lift cylinder for controlling said raising and lowering of the header;
• a control valve assembly connected to said swing and tilt circuits and shiftable between a swing circuit position in which the swing circuit communicates with a source of hydraulic pressure and an alternative tilt circuit position in which the tilt circuit communicates with said source of hydraulic pressure;
• and
• electrical actuating mechanism operably coupled with said valve assembly and including a manually operated switch for selectively and remotely controlling the shifting of the valve assembly between its alternative positions.