Draw bar swivel hitch

Details Draw bar swivel hitch Draw bar swivel hitch

A - Human Necessities

01

B

A01B 71/06 (2006.01) B60D 99/00 (2009.01) A01B 59/00 (2006.01) A01B 59/042 (2006.01)

Patent

CA 2367725

A pull-type implement has operating components that are driven by a mechanical drive line on the tongue of the implement. An upper gear box is fixed to the front end of the tongue and a lower gear box swivels relative to the upper gear box about an upright axis passing through the two gear boxes. A hitch that establishes a draft connection between the tongue and the draw bar of a towing tractor has a fore-and-aft receiver that extends beneath the lower gear box and has a lower pivotal connection with the tongue at that location. A mast fixed to and projecting upwardly from the receiver has an upper pivotal connection with the tongue at a location above the upper gear box. The receiver has a forwardly facing socket that loosely receives the draw bar to permit the draw bar to swing up and down to a limited extent about a transverse axis and rotate side-to-side to a limited extent about a fore-and-aft axis when the draw bar is retained within the socket by a locking pin. One embodiment isolates both gear boxes from all draft loads, while a second, pull-through embodiment places a limited amount of draft loading on the lower gear box.

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