The buffer has a front opening (6) retaining a contact unit (3) in a recess (4) and a rear opening (5) allowing to insert the unit (3) and a coil spring (8) in the recess. The spring presses the unit (3) in the opening (6). A body (2) has a locking unit (7...

The end piece for ensuring the connection between the winding device transmission shaft (4) and the winding shaft (2) comprises a first end (3) engaging the transmission shaft end and a second end (5) engaging the winding shaft end. The second end comprise...