drawbar

[ draw-bahr ]

/ ˈdrɔˌbɑr /

a heavy bar, often made of steel, attached to the rear of a tractor and used as a hitch for pulling machinery, as a plow or mower.

Origin of drawbar

1660–70, Americanism, for an earlier sense; draw + bar¹

These latter turn horizontally on a central pivot attached to the jaw end of the drawbar.

Scientific American Supplement, No. 601, July 9, 1887 |Various
A chart whereby you can find the tractive power or drawbar pull of any locomotive without making a figure.

Aviation Engines |Victor Wilfred Pag
A shackle and links hang from the end of the drawbar for attachment to ordinary wagons.

Scientific American Supplement, No. 601, July 9, 1887 |Various
The cranking of the drawbar allows for the deflection of the buffer springs.

Scientific American Supplement, No. 601, July 9, 1887 |Various

Note that there is no drawbar and that the coupler is merely bolted to the beams.

The 'Pioneer': Light Passenger Locomotive of 1851 |John H. White

drawbar

/ (ˈdrɔːˌbɑː) /

a strong metal bar on a tractor, locomotive, etc, bearing a hook or link and pin to attach a trailer, wagon, etc