Windrower having rear mounted overtop swingable tongue

Claim 1

In combination with an elongated header for cutting a crop and forming the cut crop into a windrow or depositing the same in a swath: a U-shaped frame having an elongated, horizontal crosshead and a pair of arms integrally secured to the crosshead and depending therefrom, said crosshead having a longitudinal axis disposed in perpendicular relationship to the path of travel of the header; means mounting said header on the frame forwardly of the crosshead for up-and-down swinging movement relative to the frame; a ground-engaging wheel connected directly to each arm respectively at the lower ends thereof for supporting the frame; a sinGle, elongated, rigid towing beam having a hitch at the normally forwardmost end thereof adapted to be connected to said vehicle behind the latter for swinging movement of the beam relative to the vehicle about a first upright axis; pivot means at the rearmost end of the beam connecting the latter with the crosshead for swinging movement of the beam relative to the frame and the header about a second upright axis; and structure interconnecting the frame and the beam for effecting said swinging movement about said second upright axis, said beam being arched upwardly over the header for clearing the latter in all positions of its up-and-down swinging movement.