Harrows

Claim 1

IN A HARROW, AN IMPLEMENT FRAME ADAPTED TO BE CONNECTED TO A DRAFT SOURCE, AN ELONGATED DRAG BAR, FLEXIBLE DRAFT MEANS CONNECTING THE DRAG BAR TO THE FRAME, A PAIR OF WING PLATES CARRIED BY THE DRAG BAR AT LONGITUDINALLY SPACED POINTS THEREOF, SAID WING PLATES EXTENDING OUTWARDLY OF THE BAR AND TRANSVERSELY OF THE LONGITUDINAL AXIS THEREOF AND EACH PLATE BEING PROVIDED WITH A VERTICAL SERIES OF SPACED APERTURES INCLUDING APERTURES DISPOSED ABOVE AND APERTURES DISPOSED BELOW A HORIZONTAL PLANE PASSING THROUGH THE LONGITUDINAL AXIS OF THE DRAG BAR, SAID WING PLATES BEING DISPOSED ALONG THE LEADING EDGE OF THE DRAG BAR, MEANS FOR ADJUSTABLY CONNECTING THE DRAFT MEANS TO SAID WING PLATES RESPECTIVELY IN ANY ONE OF SAID APERTURES AND A PLURALITY OF HARROW TEETH CARRIED BY SAID DRAG BAR AT LONGITUDINALLY SPACED POINTS ALONG THE TRAILING EDGE THEREOF AND DEPENDING THEREFROM FOR ENGAGEMENT WITH THE SOIL AND LOST MOTION CONNECTING MEANS COMPRISING GUIDE MEMBERS CONNECTED TO SAID WING PLATES AND SPACED FROM AND CURVED ABOUT THE BAR, A SECOND DRAG BAR MOUNTED IN TRAILING RELATION TO THE LEADING DRAG BAR AND SHAFT MEANS BETWEEN THE TRAILING DRAG BAR AND SAID LOST MOTION DEVICE.