Abstract: The invention relates to a utensil (1) for agricultural working provided with two main elements, a work tool (2) and a support element (3), made so as to be couplable to each other by means of a fastening device (4). Such device (4) is received in an opening (5) made on the support element (3) and in abutment surfaces (60, 61) which are made on the work tool (2); said abutment surfaces (60, 61) advantageously are shaped so that the tool (2) can be coupled and locked with the support element (3) according to whether the device (4) abuts with one of the ends thereof with one or with the other of the two abutment surfaces (60, 61).

Abstract: The rear shield of the cultivating machine consists of a lower horizontal bar (4) which can be raised and lowered substantially vertically relatively to the machine frame (1) and of a pivoting upper bonnet (5) which has its upper edge (6) pivotally connected to the machine frame (1), while its lower end bears in a slidable manner on the lower horizontal bar (4).

Abstract: The invention relates to an agricultural implement provided with rotary blades (3) which are secured in a changeable manner to at least one blade-carrying flange (2) of a shaft (1). In order to reduce the work and the time for changing the blades, each blade (3) which adheres against one side of the blade-carrying flange (2) is secured to same by means of one single locking bolt (5, 6) and presents a locking shank (203) which passes through a corresponding opening (4) of the blade-carrying flange (2) and adheres against the other side of same.