Patent ID: 9456538
Filing Date: 2016-10-04
CPC Classification: A01B

Claim Text:
1. A reversible plough comprising: a frame having a front end portion and a rear end portion, with the front end portion including a horizontal, transverse front frame support having top and bottom sides and the frame further having an upright support fixed to, and projecting upwardly from the top side of the front frame support at a location located centrally between opposite first and second ends of the front frame support; a lower first 3-point hitch attachment point and a lower second 3 -point hitch attachment point respectively fixed to first and second locations of the front frame support spaced equally from said upright support for attachment to a 3-point hitch; a vertical pivot plate assembly carrying an upper third 3-point hitch attachment point, together with an upper rear pivot point spaced rearward of the third 3-point hitch attachment point and a lower pivot point, with the lower pivot point being attached to a lower location of said upright support and establishing a horizontal transverse pivot axis about which said vertical pivot plate assembly is adapted to pivot forwardly in response to the frame being lifted by a tractor 3-point hitch and is adapted to pivot rearwardly in response to the frame being lowered by a tractor 3-point hitch; a vertical pivot axle being fixed on the rear end portion of said frame; an elongate plough tool carrier having front and rear ends and being pivotally mounted, medially the front and rear ends, on said vertical pivot axle for horizontal pivotal movement between a first work position, wherein the front end of the plough tool carrier is adjacent the first end of said transverse front frame support, and a second work position, wherein the front end of the plough tool carrier is adjacent the second end of said transverse front frame support; a link arrangement being pivotally mounted on said vertical pivot axle above said plough tool carrier; and a control link having a first end pivotally coupled to the upper rear pivotal connection of said vertical pivot plate assembly and having a second end slidably connected to the link arrangement which is pivotally supported by said vertical pivot axle and connected to said plough tool carrier.