Patent ID: 8267186
Filing Date: 2012-09-18
Classification: A01B,A01D

Abstract:
1. Apparatus comprising: (a) an elongated tongue member having a front end and a rear end and being adapted at the front end thereof to be operatively attached to a towing prime mover; (b) a frame operatively slideably attached to the rear of the tongue member between a transport position closer to the rear end of the tongue member and a working position forward of the transport position thereof; (c) ground engaging wheels operatively attached to the frame for permitting the frame to be moved at least in a forward direction, at least one of the ground engaging wheels being rotatable about an axis which is fixed with respect to the frame; (d) a first tool bar operatively pivotally attached to the frame along a first substantially vertical axis and along a first substantially horizontal axis, the first substantially vertical axis being fixed with respect to the first tool bar, the first substantially vertical axis being a greater distance forward of the rear end of the tongue member when the frame is in the working position than when the frame is in the transport position thereof; (e) a second tool bar operatively pivotally attached to the frame along a second substantially vertical axis and along a second substantially horizontal axis, which second substantially horizontal axis can be the same as the first substantially horizontal axis, the second substantially vertical axis being fixed with respect to the second tool bar, the second substantially vertical axis being a greater distance forward of the rear end of the of the tongue member when the frame is in the working position than when the frame is in the transport position thereof; (f) a first ground engaging caster wheel operatively pivotally attached to the first tool bar along a third substantially vertical axis; (g) a second ground engaging caster wheel operatively pivotally attached to the second tool bar along a fourth substantially vertical axis; (h) a bracket operatively attached to the tongue member; (i) a first arm operatively pivotally attached at one end thereof to the bracket along a fifth substantially vertical axis, the first arm also being operatively pivotally attached at the one end thereof along a third substantially horizontal axis; (j) a second arm operatively pivotally attached at one end thereof to the bracket along a sixth substantially vertical axis, the second arm also being operatively pivotally attached at the one end thereof along a fourth substantially horizontal axis, which fourth substantially horizontal axis can be coincident with the third substantially horizontal axis; (k) a first knuckle joint operatively pivotally attaching another end of the first arm to the first tool bar along a seventh substantially vertical axis and along a fifth substantially horizontal axis; (l) a second knuckle joint operatively pivotally attaching another end of the second arm to the second tool bar along an eighth substantially vertical axis and along a sixth substantially horizontal axis; and (m) the tongue member having a front end and a rear end, the rear end of the tongue member being behind the frame in the working position thereof.