Abstract: A header for a combine harvester includes gauge wheels which can be converted from a normal gauge position to a transport position in which the header is wholly supported by the gauge wheels and towed longitudinally of its length. One of the gauge wheels is a single wheel which moves inwardly toward the centre of gravity in the transport position. The other of the wheels is a walking beam system in the working position and forms a transverse axle in the transport position. Each of the gauge wheels is mounted upon a bracket which can pivot about a horizontal axis from a raised spring biased gauge position to a vertically depending position allowing rotation of the wheel about a vertical axis on the bracket. The header therefore can be transported without the necessity for a separate trailer system.

Abstract: A check-relief valve for use in a hydraulic circuit comprises a channel through a valve body which is divided by a central annular restriction into two portions. On each side of the restrictor is provided a valve seat which cooperates with a spherical ball to close off flow in a direction toward the restriction. At the outer end of each portion of the channel is provided a perforated plate which prevents the ball from restricting flow when the ball is forced against the plate. Either the ball or the restrictor is formed of a resilient deformable material which can be deformed when the pressure in the fluid exceeds a predetermined maximum in which case the ball is forced through the restriction to the opposite portion of the channel. The check valve is used in a system of a swather for moving one of the draper assemblies longitudinally of the frame of the swather and simultaneously reversing the direction of rotation of the drive to the draper.