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A transport system for a crop header includes a first and a second wheel arrangement on the header frame adjacent a respective ends for acting as a stabilizer when the header is in the operating position and movable to a transport position for transporting the header when removed from the vehicle in

A transport system for a crop header includes a first and a second wheel arrangement on the header frame adjacent a respective ends for acting as a stabilizer when the header is in the operating position and movable to a transport position for transporting the header when removed from the vehicle in a transport direction generally longitudinal of the header frame and at a right angle to the working direction with each being mounted on the header frame for rotation of a rolling direction of the first wheel arrangement between the working position and the transport position, in which the rolling direction is along the transport direction. Each of the wheel arrangements includes two parallel wheels coupled together. The wheel arrangement at the rear end includes a second wheel which is mounted on a swing arm so as to be moved to a position adjacent the cutter bar so that the header is stably supported on the first wheel arrangement, the first wheel of the second wheel arrangement and the second wheel of the second wheel arrangement. The first and second wheels of the second wheel arrangement include coupling members for connection together to operate as a common wheel arrangement in the operating position. The swing arm includes a tower which attaches to the cutter bar and can fold down on to the swing arm in the field position.

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The invention claimed is: 1. A header for a crop harvesting machine comprising: a header frame having an elongate support structure arranged across a width of the header; a mounting assembly attached to the header frame for releasably mounting the header frame on a vehicle in an operating position

The invention claimed is: 1. A header for a crop harvesting machine comprising: a header frame having an elongate support structure arranged across a width of the header; a mounting assembly attached to the header frame for releasably mounting the header frame on a vehicle in an operating position for movement across the ground carrying a crop to be harvested such that, when mounted on the vehicle, the header frame is supported on the vehicle in front of the vehicle for movement with the vehicle in a forward working direction transverse to the width of the header frame; the header frame having a plurality of support arms mounted on the support structure and extending therefrom forwardly of the working direction; a cutter bar extending across the width of the header having a cutter knife thereon for cutting a standing crop to be deposited into the header frame as the header is moved forwardly over the ground; a feed member mounted on the header frame for carrying the deposited crop along the header frame for collection at a discharge area of the header frame; at least one wheel mounted on the header frame for rotation of a rolling direction of the wheel between the working position, in which the rolling direction is along the working direction, through an angle of the order of 90 degrees, and the transport position, in which the rolling direction is along the transport direction; a hitch arm for connection to the header so as to apply a pulling force to the header from a tractor; and a height adjustment mechanism for adjusting the height of the wheel relative to the frame comprising: a first portion attached to either the frame or the wheel and a second portion attached to the other of the wheel and the frame; the first portion including a generally vertical guide slot and a plurality of locating receptacles at spaced positions along the guide slot, each receptacle having one end connected to the guide slot and a remote end recessed from the guide slot; the second portion including a horizontal locating bar which is mounted in the guide slot so as to extend across the guide slot and so as to be slidable, while remaining in the guide slot, upwardly and downwardly along the guide slot so as to adjust the height of the first portion relative to the second portion; the locating bar being movable from the guide slot into a selected one of the locating receptacles through said one end of the selected receptacle to said remote end of the selected receptacle, when a height has been selected, so as to hold the locating bar against movement along the guide slot; and a manually operable handle to which the locating bar is attached which is pivotally movable about an axis parallel to the locating bar so as to effect pivotal movement of the locating bar about the axis so that the locating bar moves between a locked position, in which the guide bar is in the selected receptacle, and an adjust position, in which the locating bar is slidable along the guide slot. 2. A header for a crop harvesting machine comprising: a header frame having an elongate support structure arranged across a width of the header; a mounting assembly attached to the header frame for releasably mounting the header frame on a vehicle in an operating position for movement across the ground carrying a crop to be harvested such that, when mounted on the vehicle, the header frame is supported on the vehicle in front of the vehicle for movement with the vehicle in a forward working direction transverse to the width of the header frame; the header frame having a plurality of support arms mounted on the support structure and extending therefrom forwardly of the working direction; a cutter bar extending across the width of the header having a cutter knife thereon for cutting a standing crop to be deposited into the header frame as the header is moved forwardly over the ground; a feed member mounted on the header frame for carrying the deposited crop along the header frame for collection at a discharge area of the header frame; at least one wheel mounted on the header frame for rotation of a rolling direction of the wheel between the working position, in which the rolling direction is along the working direction, through an angle of the order of 90 degrees, and the transport position, in which the rolling direction is along the transport direction; a hitch arm for connection to the header so as to apply a pulling force to the header from a tractor; and a height adjustment mechanism for adiusting the height of the wheel relative to the frame comprising: a first portion attached to either the frame or the wheel and a second portion attached to the other of the wheel and the frame; the first portion including a generally vertical guide slot and a plurality of locating receptacles at spaced positions along the guide slot, each receptacle having one end connected to the guide slot and a remote end recessed from the guide slot; the second portion including a horizontal locating bar which is mounted in the guide slot so as to extend across the guide slot and so as to be slidable, while remaining in the guide slot, upwardly and downwardly along the guide slot so as to adiust the height of the first portion relative to the second portion; the locating bar being movable from the guide slot into a selected one of the locating receptacles through said one end of the selected receptacle to said remote end of the selected receptacle, when a height has been selected, so as to hold the locating bar against movement along the guide slot; and a manually operable handle to which the locating bar is attached which is pivotally movable about an axis parallel to the locating bar between a locked position, in which the guide bar is in the selected receptacle, and an adjust position, wherein the manually operable handle carries a second bar parallel to the locating bar; wherein the second bar and the locating bar are movable by the pivotal movement of the locking handle between the locked position and the adjust position such that, in the locked position, the locating bar is in the receptacle and is held therein by the second bar in the guide slot and such that, in the adjust position, the locating bar and the second bar are both in the guide slot allowing sliding movement of both the locating bar and the second bar along the guide slot.