Harrow with elastically mounted teeth - having helical turns at their upper ends and hook formations engaged by retaining bolts

摘要

A harrow has a frame (1) on which a number of teeth (2) are elastically mounted. The upper end of each tooth has helical turns (3, 5) which are perpendicular to the frame and the end (16) is formed as a hook. A retaining member (4) is fixed to an arm (12). A bolt secures the arm to the frame and the hooked end (16) engages around its shank. The front end of member (4) is turned over and forms a stop which limits forward movement of the tooth.